trees

Summary

Summary: Woody, usually tall, perennial higher plants (Angiosperms, Gymnosperms, and some Pterophyta) having usually a main stem and numerous branches.

Top Publications

  1. ncbi Global consequences of land use
    Jonathan A Foley
    Center for Sustainability and the Global Environment SAGE, University of Wisconsin, 1710 University Avenue, Madison, WI 53726, USA
    Science 309:570-4. 2005
  2. doi Global biodiversity: indicators of recent declines
    Stuart H M Butchart
    United Nations Environment Programme World Conservation Monitoring Centre, 219 Huntingdon Road, Cambridge CB3 0DL, UK
    Science 328:1164-8. 2010
  3. doi A large and persistent carbon sink in the world's forests
    Yude Pan
    U S Department of Agriculture Forest Service, Newtown Square, PA 19073, USA
    Science 333:988-93. 2011
  4. ncbi The effect of deforestation on the human-biting rate of Anopheles darlingi, the primary vector of Falciparum malaria in the Peruvian Amazon
    Amy Yomiko Vittor
    School of Medicine, Stanford University, Stanford, California, USA
    Am J Trop Med Hyg 74:3-11. 2006
  5. doi Mountain pine beetle and forest carbon feedback to climate change
    W A Kurz
    Natural Resources Canada, Canadian Forest Service, Pacific Forestry Centre, Victoria, British Columbia, V8Z 1M5, Canada
    Nature 452:987-90. 2008
  6. doi Amazonia through time: Andean uplift, climate change, landscape evolution, and biodiversity
    C Hoorn
    Paleoecology and Landscape Ecology, Institute for Biodiversity and Ecosystem Dynamics IBED, University of Amsterdam, Science Park 904, 1098 XH Amsterdam, Netherlands
    Science 330:927-31. 2010
  7. ncbi Glacial refugia: hotspots but not melting pots of genetic diversity
    Remy J Petit
    Institut National de la Recherche Agronomique, UMR Biodiversité, Génes et Ecosystémes, F 33612 Cestas, France
    Science 300:1563-5. 2003
  8. doi Stability predicts genetic diversity in the Brazilian Atlantic forest hotspot
    Ana Carolina Carnaval
    Museum of Vertebrate Zoology, University of California, Berkeley, CA 94720 3160, USA
    Science 323:785-9. 2009
  9. doi A significant upward shift in plant species optimum elevation during the 20th century
    J Lenoir
    AgroParisTech, UMR 1092, Laboratoire d Etude des Ressources Forêt Bois LERFoB, 14 rue Girardet, F 54000 Nancy, France
    Science 320:1768-71. 2008
  10. doi 454 Pyrosequencing analyses of forest soils reveal an unexpectedly high fungal diversity
    M Buee
    INRA, UMR 1136 INRA Nancy Université Interactions Arbres Microorganismes, INRA Nancy, 54280 Champenoux, France
    New Phytol 184:449-56. 2009

Detail Information

Publications359 found, 100 shown here

  1. ncbi Global consequences of land use
    Jonathan A Foley
    Center for Sustainability and the Global Environment SAGE, University of Wisconsin, 1710 University Avenue, Madison, WI 53726, USA
    Science 309:570-4. 2005
    ..We face the challenge of managing trade-offs between immediate human needs and maintaining the capacity of the biosphere to provide goods and services in the long term...
  2. doi Global biodiversity: indicators of recent declines
    Stuart H M Butchart
    United Nations Environment Programme World Conservation Monitoring Centre, 219 Huntingdon Road, Cambridge CB3 0DL, UK
    Science 328:1164-8. 2010
    ....
  3. doi A large and persistent carbon sink in the world's forests
    Yude Pan
    U S Department of Agriculture Forest Service, Newtown Square, PA 19073, USA
    Science 333:988-93. 2011
    ..Our total forest sink estimate is equivalent in magnitude to the terrestrial sink deduced from fossil fuel emissions and land-use change sources minus ocean and atmospheric sinks...
  4. ncbi The effect of deforestation on the human-biting rate of Anopheles darlingi, the primary vector of Falciparum malaria in the Peruvian Amazon
    Amy Yomiko Vittor
    School of Medicine, Stanford University, Stanford, California, USA
    Am J Trop Med Hyg 74:3-11. 2006
    ..Our results indicate that A. darlingi displays significantly increased human-biting activity in areas that have undergone deforestation and development associated with road development...
  5. doi Mountain pine beetle and forest carbon feedback to climate change
    W A Kurz
    Natural Resources Canada, Canadian Forest Service, Pacific Forestry Centre, Victoria, British Columbia, V8Z 1M5, Canada
    Nature 452:987-90. 2008
    ..widespread tree mortality reduces forest carbon uptake and increases future emissions from the decay of killed trees. The impacts of insects on forest carbon dynamics, however, are generally ignored in large-scale modelling ..
  6. doi Amazonia through time: Andean uplift, climate change, landscape evolution, and biodiversity
    C Hoorn
    Paleoecology and Landscape Ecology, Institute for Biodiversity and Ecosystem Dynamics IBED, University of Amsterdam, Science Park 904, 1098 XH Amsterdam, Netherlands
    Science 330:927-31. 2010
    ..We show that Andean uplift was crucial for the evolution of Amazonian landscapes and ecosystems, and that current biodiversity patterns are rooted deep in the pre-Quaternary...
  7. ncbi Glacial refugia: hotspots but not melting pots of genetic diversity
    Remy J Petit
    Institut National de la Recherche Agronomique, UMR Biodiversité, Génes et Ecosystémes, F 33612 Cestas, France
    Science 300:1563-5. 2003
    ..To test this hypothesis, we studied chloroplast DNA variation in 22 widespread European trees and shrubs sampled in the same forests...
  8. doi Stability predicts genetic diversity in the Brazilian Atlantic forest hotspot
    Ana Carolina Carnaval
    Museum of Vertebrate Zoology, University of California, Berkeley, CA 94720 3160, USA
    Science 323:785-9. 2009
    ..This sets new priorities for conservation in Brazil and establishes a validated approach to biodiversity prediction in other understudied, species-rich regions...
  9. doi A significant upward shift in plant species optimum elevation during the 20th century
    J Lenoir
    AgroParisTech, UMR 1092, Laboratoire d Etude des Ressources Forêt Bois LERFoB, 14 rue Girardet, F 54000 Nancy, France
    Science 320:1768-71. 2008
    ..Our study shows that climate change affects the spatial core of the distributional range of plant species, in addition to their distributional margins, as previously reported...
  10. doi 454 Pyrosequencing analyses of forest soils reveal an unexpectedly high fungal diversity
    M Buee
    INRA, UMR 1136 INRA Nancy Université Interactions Arbres Microorganismes, INRA Nancy, 54280 Champenoux, France
    New Phytol 184:449-56. 2009
    ..The large proportion of unidentified sequences, however, calls for curated sequence databases. The use of pyrosequencing on soil samples will accelerate the study of the spatiotemporal dynamics of fungal communities in forest ecosystems...
  11. ncbi Range shifts and adaptive responses to Quaternary climate change
    M B Davis
    Department of Ecology, Evolution and Behavior, University of Minnesota, Saint Paul, MN 55108, USA
    Science 292:673-9. 2001
    Tree taxa shifted latitude or elevation range in response to changes in Quaternary climate. Because many modern trees display adaptive differentiation in relation to latitude or elevation, it is likely that ancient trees were also so ..
  12. doi Forests and climate change: forcings, feedbacks, and the climate benefits of forests
    Gordon B Bonan
    National Center for Atmospheric Research, P O Box 3000, Boulder, Colorado 80307, USA
    Science 320:1444-9. 2008
    ....
  13. ncbi Catastrophic shifts in ecosystems
    M Scheffer
    Department of Aquatic Ecology and Water Quality Management, Wageningen University, PO Box 8080, NL 6700 DD Wageningen, The Netherlands
    Nature 413:591-6. 2001
    ..This suggests that strategies for sustainable management of such ecosystems should focus on maintaining resilience...
  14. ncbi Spatial patterns in the distribution of tropical tree species
    R Condit
    Center for Tropical Forest Science, Smithsonian Tropical Research Institute, Unit 0948, APO AA 34002 0948, USA
    Science 288:1414-8. 2000
    ..of aggregation in the distribution of 1768 tree species is examined based on the average density of conspecific trees in circular neighborhoods around each tree...
  15. ncbi Determinants of woody cover in African savannas
    Mahesh Sankaran
    Natural Resource Ecology Laboratory, Colorado State University, Fort Collins, Colorado 80523, USA
    Nature 438:846-9. 2005
    ..In these biomes, which are characterized by the co-dominance of trees and grasses, woody cover is a chief determinant of ecosystem properties...
  16. ncbi Global allocation rules for patterns of biomass partitioning in seed plants
    Brian J Enquist
    Department of Ecology and Evolutionary Biology, University of Arizona, Tucson, AZ 87519, USA
    Science 295:1517-20. 2002
    ..The model thus identifies and defines the limits that have guided the diversification of seed plant biomass allocation strategies...
  17. pmc Quantification of global gross forest cover loss
    Matthew C Hansen
    Geographic Information Science Center of Excellence, South Dakota State University, Brookings, SD 57007, USA
    Proc Natl Acad Sci U S A 107:8650-5. 2010
    ..To fully characterize global forest change dynamics, remote sensing efforts must extend beyond estimating GFCL to identify proximate causes of forest cover loss and to estimate recovery rates from GFCL...
  18. doi A contemporary assessment of change in humid tropical forests
    Gregory P Asner
    Department of Global Ecology, Carnegie Institution, 260 Panama Street, Stanford, CA 94305, USA
    Conserv Biol 23:1386-95. 2009
    ..Our results highlight the enormous geographic extent of forest change throughout the humid tropics and the considerable limitations of the science and technology available for such a synthesis...
  19. doi The relationship between trees and human health: evidence from the spread of the emerald ash borer
    Geoffrey H Donovan
    Pacific Northwest Research Station, U S Department of Agriculture Forest Service, Pacific Northwest Research Station, Portland, Oregon, USA
    Am J Prev Med 44:139-45. 2013
    ..Several recent studies have identified a relationship between the natural environment and improved health outcomes. However, for practical reasons, most have been observational, cross-sectional studies...
  20. ncbi Determination of deforestation rates of the world's humid tropical forests
    Frédéric Achard
    Global Vegetation Monitoring Unit, Joint Research Centre, TP 440, 21020 Ispra, Italy
    Science 297:999-1002. 2002
    A recently completed research program (TREES) employing the global imaging capabilities of Earth-observing satellites provides updated information on the status of the world's humid tropical forest cover. Between 1990 and 1997, 5.8 +/- 1...
  21. pmc Devastating decline of forest elephants in central Africa
    Fiona Maisels
    Global Conservation Program, Wildlife Conservation Society, Bronx, New York, United States of America
    PLoS ONE 8:e59469. 2013
    ..In addition, the international demand for ivory, which fuels illegal trade, must be dramatically reduced...
  22. ncbi The cost-effectiveness of biodiversity surveys in tropical forests
    Toby A Gardner
    Centre for Ecology, Evolution and Conservation, School of Environmental Sciences, University of East Anglia, Norwich NR4 7TJ, UK
    Ecol Lett 11:139-50. 2008
    ..To improve the cost-effectiveness of biodiversity research we encourage a combination of clearer research goals and the use of an objective evidence-based approach to selecting study taxa...
  23. ncbi CO/FT regulatory module controls timing of flowering and seasonal growth cessation in trees
    Henrik Böhlenius
    Umea Plant Science Centre, Department of Forest Genetics and Plant Physiology, Swedish University of Agricultural Sciences, S 90183 Umeå, Sweden
    Science 312:1040-3. 2006
    Forest trees display a perennial growth behavior characterized by a multiple-year delay in flowering and, in temperate regions, an annual cycling between growth and dormancy...
  24. doi Conspecific negative density dependence and forest diversity
    Daniel J Johnson
    Department of Biology, Indiana University, Bloomington, IN 47405, USA
    Science 336:904-7. 2012
    ..Collectively, our results provide evidence that CNDD is a pervasive mechanism driving diversity across a gradient from boreal to subtropical forests...
  25. doi Towards a worldwide wood economics spectrum
    Jerome Chave
    Laboratoire Evolution et Diversité Biologique, UMR 5174, CNRS Université Paul Sabatier, Bâtiment 4R3, Toulouse, France
    Ecol Lett 12:351-66. 2009
    ..We then discuss the biogeography, evolution and biogeochemistry of the spectrum, and conclude by pointing out the major gaps in our current knowledge of wood functional traits...
  26. doi The importance of wood traits and hydraulic conductance for the performance and life history strategies of 42 rainforest tree species
    Lourens Poorter
    Forest Ecology and Forest Management Group, Centre for Ecosystem Studies, Wageningen University, AA Wageningen, The Netherlands
    New Phytol 185:481-92. 2010
    ..of 42 rainforest tree species we examined relationships amongst wood traits, diameter growth and survival of large trees in the field, and shade tolerance and adult stature of the species...
  27. doi Climate change impacts on tree ranges: model intercomparison facilitates understanding and quantification of uncertainty
    Alissar Cheaib
    Laboratoire d Ecologie, Systématique et Evolution ESE, Univ Paris Sud, UMR 8079 CNRS Univ Paris Sud AgroParisTech, Orsay Cedex, France
    Ecol Lett 15:533-44. 2012
    ..There was good quantitative agreement among models concerning the range contractions for Scots pine. For the dominant Mediterranean tree species, Holm oak, all models foresee substantial range expansion...
  28. doi Baseline map of carbon emissions from deforestation in tropical regions
    Nancy L Harris
    Ecosystem Services Unit, Winrock International, Arlington, VA 22202, USA
    Science 336:1573-6. 2012
    ..By systematically matching areas of forest loss with their carbon stocks before clearing, these results serve as a more accurate benchmark for monitoring global progress on reducing emissions from deforestation...
  29. doi Tissue-level leaf toughness, but not lamina thickness, predicts sapling leaf lifespan and shade tolerance of tropical tree species
    Kaoru Kitajima
    Department of Biology, University of Florida, Gainesville, FL 32611, USA
    New Phytol 186:708-21. 2010
    ....
  30. doi The 2010 Amazon drought
    Simon L Lewis
    School of Geography, University of Leeds, Leeds LS2 9JT, UK
    Science 331:554. 2011
    ..2 × 10(15) grams of carbon [95% confidence intervals (CIs) are 1.2 and 3.4], largely longer-term committed emissions from drought-induced tree deaths, compared with 1.6 × 10(15) grams of carbon (CIs 0.8 and 2.6) for the 2005 event...
  31. ncbi Highly variable Northern Hemisphere temperatures reconstructed from low- and high-resolution proxy data
    Anders Moberg
    Department of Meteorology, Stockholm University, SE 106 91 Stockholm, Sweden
    Nature 433:613-7. 2005
    ..7 K below the average of 1961-90 occurred around ad 1600. This large natural variability in the past suggests an important role of natural multicentennial variability that is likely to continue...
  32. ncbi Carbon in Amazon forests: unexpected seasonal fluxes and disturbance-induced losses
    Scott R Saleska
    Department of Earth and Planetary Sciences, Harvard University, Cambridge, MA 02138, USA
    Science 302:1554-7. 2003
    ..Given that episodic disturbances are characteristic of old-growth forests, it is likely that carbon sequestration is lower than has been inferred from recent eddy covariance studies at undisturbed sites...
  33. ncbi Beta-diversity in tropical forest trees
    Richard Condit
    Center for Tropical Forest Science, Smithsonian Tropical Research Institute, Unit 0948, APO AA 34002 0948, USA
    Science 295:666-9. 2002
    ..We present quantitative estimates of beta-diversity for tropical trees by comparing species composition of plots in lowland terra firme forest in Panama, Ecuador, and Peru...
  34. ncbi 48,000 years of climate and forest change in a biodiversity hot spot
    Mark B Bush
    Florida Institute of Technology, 150 West University Boulevard, Melbourne, FL 32901 6975, USA
    Science 303:827-9. 2004
    ..The warming rate of about 1 degrees C per millennium during the Pleistocene-Holocene transition was an order of magnitude less than the projected changes for the 21st century...
  35. ncbi Long-term sensitivity of soil carbon turnover to warming
    W Knorr
    Max Planck Institute for Biogeochemistry, PO Box 100164, D 07701 Jena, Germany
    Nature 433:298-301. 2005
    ....
  36. ncbi Expansion of industrial logging in Central Africa
    Nadine T Laporte
    Woods Hole Research Center, Falmouth, MA 02540, USA
    Science 316:1451. 2007
    ..A new frontier of logging expansion was identified within the Democratic Republic of Congo, which contains 63% of the remaining forest of the region. Tree felling and skid trails increased disturbance in selectively logged areas...
  37. doi Reconciling food production and biodiversity conservation: land sharing and land sparing compared
    Ben Phalan
    Department of Zoology, University of Cambridge, Downing Street, Cambridge CB2 3EJ, UK
    Science 333:1289-91. 2011
    ..For both taxa in both countries, land sparing is a more promising strategy for minimizing negative impacts of food production, at both current and anticipated future levels of production...
  38. doi Accelerating the domestication of trees using genomic selection: accuracy of prediction models across ages and environments
    M F R Resende
    Genetics and Genomics Graduate Program, University of Florida, PO Box 103610, Gainesville, FL 32611, USA
    New Phytol 193:617-24. 2012
    ....
  39. doi Genomic selection for growth and wood quality in Eucalyptus: capturing the missing heritability and accelerating breeding for complex traits in forest trees
    Marcos D V Resende
    EMBRAPA Forestry Research, Colombo, PR, 83411 000, Brazil Universidade Federal de Viçosa Viçosa, MG 36570 000, Brazil
    New Phytol 194:116-28. 2012
    ..GS brings a new perspective to the understanding of quantitative trait variation in forest trees and provides a revolutionary tool for applied tree improvement...
  40. ncbi Populus: a model system for plant biology
    Stefan Jansson
    Department of Plant Physiology, Umea Plant Science Center, Umea University, SE 901 87 Umea, Sweden
    Annu Rev Plant Biol 58:435-58. 2007
    ....
  41. pmc Identification of Amazonian trees with DNA barcodes
    Mailyn Adriana Gonzalez
    Laboratoire Evolution et Diversité Biologique, Université Paul Sabatier and CNRS, UMR 5174, Toulouse, France
    PLoS ONE 4:e7483. 2009
    ..Large-scale plant diversity inventories are critical to develop informed conservation strategies. However, the workload required for classic taxonomic surveys remains high and is particularly problematic for megadiverse tropical forests...
  42. pmc Belowground carbon allocation by trees drives seasonal patterns of extracellular enzyme activities by altering microbial community composition in a beech forest soil
    Christina Kaiser
    University of Vienna, Department of Chemical Ecology and Ecosystem Research, Vienna, Austria
    New Phytol 187:843-58. 2010
    ..Our study shows that, through belowground C allocation, trees significantly alter soil microbial communities, which may affect seasonal patterns of decomposition processes.
  43. ncbi Old-growth forests can accumulate carbon in soils
    Guoyi Zhou
    South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, 510650, China
    Science 314:1417. 2006
    ..The result directly challenges the prevailing belief in ecosystem ecology regarding carbon budget in old-growth forests and supports the establishment of a new, nonequilibrium conceptual framework to study soil carbon dynamics...
  44. ncbi Tree cover in sub-Saharan Africa: rainfall and fire constrain forest and savanna as alternative stable states
    A Carla Staver
    Ecology and Evolutionary Biology, Princeton University, Princeton, New Jersey 08544, USA
    Ecology 92:1063-72. 2011
    ..Intermediate tree cover rarely occurs. Fire, which prevents trees from establishing, differentiates high and low tree cover, especially in areas with rainfall between 1000 mm and ..
  45. ncbi Testing hybridization hypotheses based on incongruent gene trees
    T Sang
    Department of Botany and Plant Pathology, Michigan State University, East Lansing, Michigan 48824, USA
    Syst Biol 49:422-34. 2000
    ..Consequently, hybrid speciation may play a major role in causing topological incongruence between gene trees. The incongruence, in turn, offers an opportunity to detect hybrid speciation...
  46. doi Changes in the potential distribution of humid tropical forests on a warmer planet
    Przemyslaw Zelazowski
    Environmental Change Institute, School of Geography and the Environment, University of Oxford, Oxford OX1 3QY, UK
    Philos Trans A Math Phys Eng Sci 369:137-60. 2011
    ..The analysis presented here focuses primarily on hydrological determinants of HTF extent. We conclude by discussing the role of other factors, notably the physiological effects of higher temperature...
  47. pmc Carbon dioxide and the uneasy interactions of trees and savannah grasses
    William J Bond
    Botany Department, University of Cape Town, Rondebosch 7701, South Africa
    Philos Trans R Soc Lond B Biol Sci 367:601-12. 2012
    Savannahs are a mixture of trees and grasses often occurring as alternate states to closed forests. Savannah fires are frequent where grass productivity is high in the wet season...
  48. pmc The birds and the bees and the flowers and the trees: lessons from genetic mapping of sex determination in plants and animals
    Deborah Charlesworth
    Department of Zoology, Edward Grey Institute, University of Oxford, Oxford OX1 3PS, United Kingdom
    Genetics 186:9-31. 2010
    ....
  49. doi Distinctive phyllosphere bacterial communities in tropical trees
    Mincheol Kim
    School of Biological Sciences, Seoul National University, 599 Gwanak Ro, Gwanak Gu, Seoul, 151 747, Republic of Korea
    Microb Ecol 63:674-81. 2012
    Recent work has suggested that in temperate and subtropical trees, leaf surface bacterial communities are distinctive to each individual tree species and dominated by Alpha- and Gammaproteobacteria...
  50. doi Decoupled leaf and stem economics in rain forest trees
    Christopher Baraloto
    INRA, UMR Ecologie des Forêts de Guyane, 97387 Kourou Cedex, French Guiana
    Ecol Lett 13:1338-47. 2010
    ..a whole-plant approach by integrating data on functional traits for 13 448 leaves and wood tissues from 4672 trees representing 668 species of Neotropical trees...
  51. doi Urban trees and the risk of poor birth outcomes
    Geoffrey H Donovan
    USDA Forest Service, PNW Research Station, Portland, OR 97205, USA
    Health Place 17:390-3. 2011
    ..42 per 1000 births (95% CI-0.11-2.72). Results suggest that the natural environment may affect pregnancy outcomes and should be evaluated in future research...
  52. pmc Understanding the impacts of land-use policies on a threatened species: is there a future for the Bornean orang-utan?
    Serge A Wich
    Research Centre in Evolutionary Anthropology and Palaeoecology, School of Natural Sciences and Psychology, Liverpool John Moores University, Liverpool, United Kingdom
    PLoS ONE 7:e49142. 2012
    ..Presently land use planning is more driven by vested interests and direct and immediate economic gains, rather than by approaches that take into consideration social equity and environmental sustainability...
  53. ncbi Partitioning beta diversity in a subtropical broad-leaved forest of China
    Pierre Legendre
    Departement de sciences biologiques, Universite de Montreal, C P 6128, Succursale Centre Ville, Montreal, Quebec H3C3J7, Canada
    Ecology 90:663-74. 2009
    ..In the fine-scale analysis (10 x 10 m cells), neutral processes dominated (43%) over environmental control (20%)...
  54. doi Functional traits and niche-based tree community assembly in an Amazonian forest
    Nathan J B Kraft
    Department of Integrative Biology, University of California, Berkeley, CA 94720, USA
    Science 322:580-2. 2008
    ..Using a null model approach, we show that co-occurring trees are often less ecologically similar than a niche-free (neutral) model predicts...
  55. pmc Benchmark map of forest carbon stocks in tropical regions across three continents
    Sassan S Saatchi
    Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, USA
    Proc Natl Acad Sci U S A 108:9899-904. 2011
    ..5% and ca. ± 1%, respectively. The benchmark map illustrates regional patterns and provides methodologically comparable estimates of carbon stocks for 75 developing countries where previous assessments were either poor or incomplete...
  56. ncbi Comparing niche- and process-based models to reduce prediction uncertainty in species range shifts under climate change
    Xavier Morin
    Centre d Ecologie Fonctionnelle et Evolutive, Unite Mixte de Recherche, Centre National de la Recherche Scientifique 5175, Equipe BIOFLUX, CNRS, 1919, route de Mende, 34293 Montpellier Cedex 5, France
    Ecology 90:1301-13. 2009
    ....
  57. ncbi Climate change and forests of the future: managing in the face of uncertainty
    Constance I Millar
    USDA Forest Service, Sierra Nevada Research Center, Pacific Southwest Research Station, 800 Buchanan Street, Albany, California 94710, USA
    Ecol Appl 17:2145-51. 2007
    ..Priority-setting approaches (e.g., triage), appropriate for rapidly changing conditions and for situations where needs are greater than available capacity to respond, will become increasingly important in the future...
  58. doi Intensifying weathering and land use in Iron Age Central Africa
    Germain Bayon
    Institut Français de Recherche pour l Exploitation de la Mer IFREMER, Unité de Recherche Géosciences Marines, F 29280 Plouzane, France
    Science 335:1219-22. 2012
    About 3000 years ago, a major vegetation change occurred in Central Africa, when rainforest trees were abruptly replaced by savannas...
  59. ncbi Thresholds in forest bird occurrence as a function of the amount of early-seral broadleaf forest at landscape scales
    M G Betts
    Department of Forest Ecosystems and Society, 312 Richardson Hall, Oregon State University, Corvallis, Oregon 97331, USA
    Ecol Appl 20:2116-30. 2010
    ..Forest management treatments that maintain or restore even small amounts of broadleaf vegetation could mitigate further declines...
  60. ncbi Potassium, phosphorus, or nitrogen limit root allocation, tree growth, or litter production in a lowland tropical forest
    S Joseph Wright
    Smithsonian Tropical Research Institute, Apartado 0843 03092, Balboa, Republic of Panama
    Ecology 92:1616-25. 2011
    ..Our experiment provides evidence that N, P, and K all limit forest plants growing on a relatively fertile soil in the lowland tropics, with the strongest evidence for limitation by K among seedlings, saplings, and poles...
  61. pmc Mangrove trees affect the community structure and distribution of anammox bacteria at an anthropogenic-polluted mangrove in the Pearl River Delta reflected by 16S rRNA and hydrazine oxidoreductase (HZO) encoding gene analyses
    Meng Li
    School of Biological Sciences, The University of Hong Kong, Pokfulam Road, Hong Kong SAR, People s Republic of China
    Ecotoxicology 20:1780-90. 2011
    ..in surface (1-2 cm) and lower (20-21 cm) layers of mangrove sediments at sites located immediately to the mangrove trees (S0), 10 m (S1) and 1000 m (S2) away from mangrove trees in a polluted area of the Pearl River Delta...
  62. doi Designed for deconstruction--poplar trees altered in cell wall lignification improve the efficacy of bioethanol production
    Shawn D Mansfield
    Department of Wood Science, The University of British Columbia, Vancouver, BC V6T 1Z4, Canada
    New Phytol 194:91-101. 2012
    ..In an attempt to assess the impact of cell wall lignin on recalcitrance, we subjected poplar trees engineered with altered lignin content and composition to two potential industrial pretreatment regimes, and ..
  63. pmc Advances in the use of DNA barcodes to build a community phylogeny for tropical trees in a Puerto Rican forest dynamics plot
    W John Kress
    Department of Botany, National Museum of Natural History Smithsonian Institution, Washington, DC, United States of America
    PLoS ONE 5:e15409. 2010
    ..In that study sequence data from three barcode loci were used to generate a well-resolved species-level phylogeny...
  64. doi Precocious flowering in trees: the FLOWERING LOCUS T gene as a research and breeding tool in Populus
    Huanling Zhang
    Northwest A and F University, College of Forestry, Yangling, 712100 People s Republic of China
    J Exp Bot 61:2549-60. 2010
    ..The application of FT should be of particular use in forest trees, as it could greatly accelerate and enable new kinds of breeding and research...
  65. ncbi Changes in forest biomass carbon storage in China between 1949 and 1998
    J Fang
    Department of Urban and Environmental Science, and Key Laboratory for Earth Surface Processes of the Ministry of Education, Peking University, Beijing 100871, China
    Science 292:2320-2. 2001
    ..14 petagram of carbon, suggesting that carbon sequestration through forest management practices addressed in the Kyoto Protocol could help offset industrial carbon dioxide emissions...
  66. doi Beyond deforestation: restoring forests and ecosystem services on degraded lands
    Robin L Chazdon
    Department of Ecology and Evolutionary Biology, University of Connecticut, Storrs, CT 06269 3043, USA
    Science 320:1458-60. 2008
    ..New forests will require adaptive management as dynamic, resilient systems that can withstand stresses of climate change, habitat fragmentation, and other anthropogenic effects...
  67. doi Global convergence in the vulnerability of forests to drought
    Brendan Choat
    University of Western Sydney, Hawkesbury Institute for the Environment, Richmond, New South Wales 2753, Australia
    Nature 491:752-5. 2012
    ..These findings provide insight into why drought-induced forest decline is occurring not only in arid regions but also in wet forests not normally considered at drought risk...
  68. doi Differential responses to changes in growth temperature between trees from different functional groups and biomes: a review and synthesis of data
    Danielle A Way
    Department of Biology, Duke University, Durham, NC, USA
    Tree Physiol 30:669-88. 2010
    The response of tree growth to a change in temperature may differ in predictable ways. Trees with conservative growth strategies may have little ability to respond to a changing climate...
  69. ncbi The likely impact of elevated [CO2], nitrogen deposition, increased temperature and management on carbon sequestration in temperate and boreal forest ecosystems: a literature review
    Riitta Hyvönen
    Department of Ecology and Environmental Research, Swedish University of Agricultural Sciences SLU, PO Box 7072, SE 750 07 Uppsala, Sweden
    New Phytol 173:463-80. 2007
    ..However, management has considerable potential for controlling the C store...
  70. ncbi Similar response of labile and resistant soil organic matter pools to changes in temperature
    Changming Fang
    School of Biological Sciences, University of Aberdeen, Aberdeen AB24 3UU, UK
    Nature 433:57-9. 2005
    ....
  71. ncbi Farming and the fate of wild nature
    Rhys E Green
    Department of Zoology, University of Cambridge, Downing Street, Cambridge, CB2 3EJ, UK
    Science 307:550-5. 2005
    ..Empirical data on such density-yield functions are sparse, but evidence from a range of taxa in developing countries suggests that high-yield farming may allow more species to persist...
  72. doi Widespread increase of tree mortality rates in the western United States
    Phillip J van Mantgem
    U S Geological Survey, Western Ecological Research Center, Three Rivers, CA 93271, USA
    Science 323:521-4. 2009
    ..Because mortality increased in small trees, the overall increase in mortality rates cannot be attributed solely to aging of large trees...
  73. doi Negative plant-soil feedback predicts tree-species relative abundance in a tropical forest
    Scott A Mangan
    Department of Biological Sciences, University of Wisconsin Milwaukee, Wisconsin 53201, USA
    Nature 466:752-5. 2010
    ..relative to heterospecific seedlings) is reduced when grown in the presence of enemies associated with adult trees. Both experiments provide strong evidence for negative plant-soil feedback mediated by soil biota...
  74. doi Species-area relationships always overestimate extinction rates from habitat loss
    Fangliang He
    State Key Laboratory of Biocontrol and School of Life Sciences, Sun Yat Sen University, Guangzhou 510275, China
    Nature 473:368-71. 2011
    ..Although we conclude that extinctions caused by habitat loss require greater loss of habitat than previously thought, our results must not lead to complacency about extinction due to habitat loss, which is a real and growing threat...
  75. pmc miRNA control of vegetative phase change in trees
    Jia wei Wang
    Department of Molecular Biology, Max Planck Institute for Developmental Biology, Tubingen, Germany
    PLoS Genet 7:e1002012. 2011
    ..transition occurs soon after germination and usually involves relatively minor morphological changes, whereas in trees and other perennial woody plants it occurs after months or years and can involve major changes in shoot ..
  76. pmc Tropical forests were the primary sources of new agricultural land in the 1980s and 1990s
    H K Gibbs
    Program on Food Security and the Environment, Stanford University, Stanford, CA 94305, USA
    Proc Natl Acad Sci U S A 107:16732-7. 2010
    ..This study underscores the potential consequences of unabated agricultural expansion for forest conservation and carbon emissions...
  77. ncbi Malaria epidemiology in low-endemicity areas of the Atlantic Forest in the Vale do Ribeira, São Paulo, Brazil
    Izilda Curado
    Superintendencia de Controle de Endemias, SUCEN, Secretaria de Estado da Saúde, Rua Paula Sousa 166, CEP 01027 000, Brazil
    Acta Trop 100:54-62. 2006
    ..vivax parasites. The areas where these parks are located belong to the Atlantic Forest habitat, and inhabitants frequently, see monkeys. Our data suggest that monkeys may constitute a natural reservoir for malaria in both areas...
  78. pmc Fungal community analysis by large-scale sequencing of environmental samples
    Heath E O'Brien
    Department of Biology, Duke University, Durham NC 27708
    Appl Environ Microbiol 71:5544-50. 2005
    ..All sequences were deposited in GenBank, with accession numbers AY 969316 to AY 970290 for the ITS sequences and AY 969135 to AY 969315 for the SSU sequences...
  79. doi Increasing carbon storage in intact African tropical forests
    Simon L Lewis
    Earth and Biosphere Institute, School of Geography, University of Leeds, Leeds LS2 9JT, UK
    Nature 457:1003-6. 2009
    ..We find that across 79 plots (163 ha) above-ground carbon storage in live trees increased by 0.63 Mg C ha(-1) yr(-1) between 1968 and 2007 (95% confidence interval (CI), 0.22-0...
  80. ncbi A world without mangroves?
    N C Duke
    Science 317:41-2. 2007
  81. ncbi Respiration as the main determinant of carbon balance in European forests
    R Valentini
    University of Tuscia, Department of Forest Environment and Resources, Viterbo, Italy
    Nature 404:861-5. 2000
    ..Also, for an accurate assessment of the carbon balance in a particular forest ecosystem, remote sensing of the normalized difference vegetation index or estimates based on forest inventories may not be sufficient...
  82. ncbi Prospects for tropical forest biodiversity in a human-modified world
    Toby A Gardner
    Department of Zoology, University of Cambridge, Downing Street, Cambridge CB2 3EJ, UK mail
    Ecol Lett 12:561-82. 2009
    ..Building upon our synthesis we outline a simple adaptive-landscape planning framework that can help guide a new research agenda to enhance biodiversity conservation prospects in the human-modified tropics...
  83. ncbi Abundance-based similarity indices and their estimation when there are unseen species in samples
    Anne Chao
    Institute of Statistics, National Tsing Hua University, Hsin Chu 30043, Taiwan
    Biometrics 62:361-71. 2006
    ..Data on successional vegetation in six tropical forests are used for illustration. Advantages and disadvantages of some commonly applied indices are briefly discussed...
  84. ncbi Ecology. Species diversity--scale matters
    Katherine J Willis
    School of Geography and the Environment, University of Oxford, Oxford OX1 3TB, UK
    Science 295:1245-8. 2002
  85. ncbi Ecological meltdown in predator-free forest fragments
    J Terborgh
    Center for Tropical Conservation, Duke University, Box 90381, Durham, NC 27708, USA
    Science 294:1923-6. 2001
    ..The densities of seedlings and saplings of canopy trees are severely reduced on herbivore-affected islands, providing evidence of a trophic cascade unleashed in the ..
  86. pmc The total amounts of radioactively contaminated materials in forests in Fukushima, Japan
    Shoji Hashimoto
    Soil Resources Laboratory, Department of Forest Site Environment, Forestry and Forest Products Research Institute, 1 Matsunosato, Tsukuba, Ibaraki 305 8687, Japan
    Sci Rep 2:416. 2012
    ....
  87. doi Imidacloprid in leaves from systemically treated trees may inhibit litter breakdown by non-target invertebrates
    David P Kreutzweiser
    Canadian Forest Service, Natural Resources Canada, 1219 Queen St East, Sault Ste Marie, Ontario, Canada P6A 2E5
    Ecotoxicol Environ Saf 72:1053-7. 2009
    Imidacloprid is a systemic insecticide that is used in trees to control several invasive, wood-boring insect pests in North America...
  88. doi Old-growth forests as global carbon sinks
    Sebastiaan Luyssaert
    Department of Biology, University of Antwerp, 2610 Wilrijk, Belgium
    Nature 455:213-5. 2008
    ..Old-growth forests accumulate carbon for centuries and contain large quantities of it. We expect, however, that much of this carbon, even soil carbon, will move back to the atmosphere if these forests are disturbed...
  89. pmc Children living in areas with more street trees have lower prevalence of asthma
    G S Lovasi
    Institute for Social andEconomic Research and Policy New York, NY, USA
    J Epidemiol Community Health 62:647-9. 2008
    ..The prevalence of childhood asthma in the USA increased by 50% from 1980 to 2000, with especially high prevalence in poor urban communities...
  90. ncbi Nitrogen limitation of net primary productivity in terrestrial ecosystems is globally distributed
    David S LeBauer
    Department of Earth System Science, University of California, Irvine, California 92054, USA
    Ecology 89:371-9. 2008
    ..These results suggest that the global N and C cycles interact strongly and that geography can mediate ecosystem response to N within certain biome types...
  91. doi Association mapping in forest trees and fruit crops
    M Awais Khan
    Department of Natural Resources and Environmental Sciences, University of Illinois, Urbana, IL 61801 USA
    J Exp Bot 63:4045-60. 2012
    ..along with availability of high-throughput resequencing methods, SNPs can be effectively used for genotyping trees. In addition to DNA polymorphisms, copy number variations (CNVs) in the form of deletions, duplications, and ..
  92. doi Averting biodiversity collapse in tropical forest protected areas
    William F Laurance
    Centre for Tropical Environmental and Sustainability Science and School of Marine and Tropical Biology, James Cook University, Cairns, Queensland 4878, Australia
    Nature 489:290-4. 2012
    ....
  93. ncbi Modeling the effects of environmental disturbance on wildlife communities: avian responses to prescribed fire
    Robin E Russell
    U S Forest Service, Rocky Mountain Research Station, 1648 S 7th Avenue, Montana State University Campus, Bozeman, Montana 59717, USA
    Ecol Appl 19:1253-63. 2009
    ..Land management agencies interested in determining the effects of habitat manipulations on wildlife communities can use these methods to provide guidance for future management activities...
  94. doi Arbuscular mycorrhizal fungal communities in plant roots are not random assemblages
    John Davison
    Department of Botany, University of Tartu, Tartu, Estonia
    FEMS Microbiol Ecol 78:103-15. 2011
    ..Thus, the habitat range of the host and a possible interaction with season played a role in the assembly of AMF communities in individual plant root systems...
  95. pmc A general quantitative theory of forest structure and dynamics
    Geoffrey B West
    Santa Fe Institute, 1399 Hyde Park Road, Santa Fe, NM 87501, USA
    Proc Natl Acad Sci U S A 106:7040-5. 2009
    ..The theory uses allometric scaling relations, based on metabolism and biomechanics, to quantify how trees use resources, fill space, and grow...
  96. doi Quantification of effects of season and nitrogen supply on tree below-ground carbon transfer to ectomycorrhizal fungi and other soil organisms in a boreal pine forest
    Mona N Högberg
    Department of Forest Ecology and Management, Swedish University of Agricultural Sciences SLU, SE 901 83 Umea, Sweden
    New Phytol 187:485-93. 2010
    ..Thus, organisms in forest soils, and their roles in ecosystem functions, appear highly sensitive to plant physiological responses to two major aspects of global change: changes in seasonal weather patterns and N eutrophication...
  97. doi Carbon dynamics in trees: feast or famine?
    Anna Sala
    Division of Biological Sciences, The University of Montana, Missoula, MT 59812, USA
    Tree Physiol 32:764-75. 2012
    Research on the degree to which carbon (C) availability limits growth in trees, as well as recent trends in climate change and concurrent increases in drought-related tree mortality, have led to a renewed focus on the physiological ..
  98. doi Biodiversity differences between managed and unmanaged forests: meta-analysis of species richness in Europe
    Yoan Paillet
    Cemagref, UR EFNO, Domaine des Barres, F 45290 Nogent sur Vernisson, France
    Conserv Biol 24:101-12. 2010
    ..Species dependent on forest cover continuity, deadwood, and large trees (bryophytes, lichens, fungi, saproxylic beetles) and carabids were negatively affected by forest management...
  99. pmc Phloem loading strategies and water relations in trees and herbaceous plants
    Qiushi Fu
    Department of Horticulture, Cornell University, Ithaca, New York 14853, USA
    Plant Physiol 157:1518-27. 2011
    Most herbaceous plants employ thermodynamically active mechanisms of phloem loading, whereas in many trees, the mechanism is passive, by diffusion...
  100. ncbi Widespread density-dependent seedling mortality promotes species coexistence in a highly diverse Amazonian rain forest
    Margaret R Metz
    Department of Integrative Biology, University of California, Berkeley, California 94720, USA
    Ecology 91:3675-85. 2010
    ....
  101. pmc Diversity of bacteria associated with Bursaphelenchus xylophilus and other nematodes isolated from Pinus pinaster trees with pine wilt disease
    Diogo Neves Proença
    Institute of Marine Research IMAR CMA, Coimbra, Portugal
    PLoS ONE 5:e15191. 2010
    ..xylophilus and with other nematodes isolated from pine trees, Pinus pinaster, with PWD from three different affected forest areas in Portugal...

Research Grants74

  1. LINKAGE DISEQUILIBRIUM MAPPING USING THE COALESCENT
    Joseph Felsenstein; Fiscal Year: 2001
    ..The difficulty is that we do not known the pedigree, and must use the genetic data to estimate it. The random trees of ancestry of gene copies in a large population are called coalescents...
  2. Genetic variation and regulatory networks: Mechanisms and complexity
    DANA PE ER; Fiscal Year: 2009
    ..These tools will be made publicly available, including a friendly graphical user interface and visualization. ..
  3. Multivariate CART for survival with dental applications
    Martha E Nunn; Fiscal Year: 2013
    ..primary goal of this study is to apply newly developed multivariate extensions of Classification And Regression Trees (CART) for survival to a large, de-identified database obtained from the AxiUm system of electronic dental records ..
  4. Genetics of Cryptococcus sexual reproduction
    Joseph Heitman; Fiscal Year: 2013
    ..We have 1) shown that sex occurs in common environmental niches (pigeon guano, plants/trees) and in response to nutrient limitation, light/darkness, carbon dioxide, and inositol;2) elucidated same-sex ..
  5. Predicting persistent Organ Failure early in Acute Pancreatitis
    Georgios I Papachristou; Fiscal Year: 2013
    ..Naove Bayes, logistic regression model, support vector machines, artificial neural networks, and decision trees. Using data from this same cohort, we will calculate the accuracy of 5 single markers (glucose, hematocrit, blood ..
  6. Evolutionary Analysis of the Histone Deacetylase Family: Biomedical Research
    JOSEPH LEWIS GRAVES; Fiscal Year: 2011
    ..Once these sequences are aligned, phylogenetic trees shall be drawn and their reliability estimated by various methods (Maximum Likelihood, Bayesian Analysis...
  7. Prenatal stress biology, infant body composition and obesity risk
    Sonja Entringer; Fiscal Year: 2013
    ..series data, including generalized additive models, polynomial distributed lag, classification and regression trees, and multivariate regression analysis will be used to address the study aims...
  8. Developing, Validating, and Implementing a CKD Predictive Model (DELVECKD)
    KHALED A ABDEL-KADER; Fiscal Year: 2013
    ..Dr. Douglas Landsittel, a statistician with an interest in the classification of disease outcomes using decision trees, has extensive experience in building and validating predictive models...
  9. Growth and Carcinogenic Potential in the Postnatal Mammary Gland
    Demetri D Spyropoulos; Fiscal Year: 2010
    ..the possibility that the homeobox transcription factor HoxC6 may underlie this delayed response: 1) Mammary ductal trees in our HoxC6 deficient animals display a profound failure to undergo postnatal expansion;2) In normal animals, ..
  10. Community-based Participatory Research: A Tool to Advance Cookstove Interventions
    MAGGIE LYNN CLARK; Fiscal Year: 2013
    ..past 8 years, the candidate and mentoring team have worked closely and successfully with the community partners (Trees, Water &People [TWP], Fort Collins, CO;AHDESA, Tegucigalpa, Honduras)...
  11. CRCNS:US French Coll:Computational Imaging of the Aging Cerebral Microvasculature
    Bradley P Sutton; Fiscal Year: 2013
    ..Combined with a computer simulation of vascular trees, the structural characteristics of the microvasculature can be extracted using these measures...
  12. Hippocampal neurodifferentiation study in aging mice by in vivo microendoscopy
    Mark J Schnitzer; Fiscal Year: 2012
    ..growth or retraction of newborn neurons'dendritic branch tips, the branching complexity of their dendritic trees as a function of developmental time, and distances and rates of cell migration from the sub-granular to the ..
  13. A National Consortium to Explore the Genotypic Basis for ESRD in Lupus
    Robert P Kimberly; Fiscal Year: 2010
    ..to gene discovery and biological pathway characterization including Bayesian networks, alternative decision trees, HyperLasso, and penalized logistic regression...
  14. Targeting the Pial Collateral Circulation for Mitigation of Cerebral Ischemia
    James E Faber; Fiscal Year: 2013
    ..Native (pre-existing) collaterals interconnect adjacent arterial trees and function as critical bypass vessels if obstruction occurs in one of the trees...
  15. Maintenance and Rarefaction of the Native Collateral Circulation
    James E Faber; Fiscal Year: 2013
    ..Native (pre-existing) collaterals (COLs) interconnect adjacent arterial trees and function critically as bypass vessels i vascular obstruction occurs...
  16. Statistical Models in Epigenomics
    Kimberly D Siegmund; Fiscal Year: 2011
    ..Estimate the number of cancer stem cells based on the types of ancestral trees inferred from the methylation patterns;b. Evaluate tumor heterogeneity, e.g...
  17. Integrated Desktop Software for Management of Hepatitic C Data
    Johanna C Craig; Fiscal Year: 2010
    ..We will also develop a phylogeny tool for assembling alignments into evolutionary trees that will color-code and time-stamp the input sequences (aim II), and a graphics tool that will present the raw ..
  18. Synaptic Mechanisms of Vestibular Efferent Responses
    JOSEPH CHRISTOPHER HOLT; Fiscal Year: 2012
    ..Light and EM microscopy will be used to reconstruct terminal trees and to examine the distribution and synaptic structure of efferent terminals...
  19. Evolution of Cryptococcus neoformans strains from patients with HIV/AIDS
    John R Perfect; Fiscal Year: 2013
    ..a unique, highly-variable, recombining subpopulation in southern Africa that is associated with indigenous African trees. The genetic diversity of this southern African population is unprecedented and suggests that this population may ..
  20. Multi-center Structural &Functional Quantitative CT Pulmonary Phenotyping
    ERIC ALFRED HOFFMAN; Fiscal Year: 2012
    ..hold / single lung volume techniques;3) expand image segmentation of the lung to the pulmonary arterial and venous trees to further link structure to function as well as to reliabily provide a framework for dividing the lung into ..
  21. CT Method Development for Quantifying Myocardial Microvascular Flow Distribution
    ERIK LEO RITMAN; Fiscal Year: 2013
    ..This involves quantifying the spatial distribution of blood flow in arteriolar trees with lumen diameters in the range of 10 - 50 [unreadable]m...
  22. Novel Computational Tools for Studying the Human Microbiome
    FREDERICK ALBERT MATSEN; Fiscal Year: 2012
    ..First, computationally efficient maximum-likelihood phylogenetic placement of sequences on trees will provide a robust method for identifying microbes and distinguishing between novelty and uncertainty...
  23. ROLE OF YAPS IN Y. PESTIS PATHOGENESIS
    Virginia L Miller; Fiscal Year: 2010
    ..Second, many of the Yaps by sequence analysis are relatively divergent when evolutionary trees of ATs are constructed and thus, the likelihood of identifying new functions by studying this group of ATs is high...
  24. Plasticity of Striatal Glutamatergic Synapses in Parkinson's Disease
    Yoland Smith; Fiscal Year: 2013
    ..It is largely made up of medium sized GABAergic neurons characterized by densely spiny dendritic trees, the so- called "medium spiny neurons (MSNs)"...
  25. Neuronal events and molecular pathways in active dendrite degeneration
    Melissa Rolls; Fiscal Year: 2010
    ..dendritic arborization neurons are sensory neurons under the larval cuticle that elaborate large dendritic trees similar in complexity to central neurons...
  26. Does the Neighborhood Environment Modify Genetic Risk for Cognitive Decline?
    Philippa Clarke; Fiscal Year: 2012
    ..the study also collected objectively measured, detailed environmental data (including the presence of parks, trees, libraries, churches, community centers)...
  27. Quantifying Changes in Neural Stem Cell Lineages in the Aging Niche
    Sally Temple; Fiscal Year: 2013
    ..and analyzed with state-of-the-art automated software tools for tracking stem cells and generating lineage trees, enabling us to accurately identify differences in NSC behavior at different ages...
  28. Integrated software application for management of Hepatitis C Virus data
    Johanna C Craig; Fiscal Year: 2013
    ..assemblies that are linked to a highly flexible query tool, as well as tools for assembling and viewing phylogenic trees and for producing graphics tool that present the raw electropherogram data (traces), and assemble line and bar ..
  29. Shear Stress, AMPK, and Endothelial Functions
    JOHN Y_J SHYY; Fiscal Year: 2013
    The prevalent distribution of atherosclerotic lesions in the curvature and branches of arterial trees demonstrates the critical role of flow patterns in predisposing the arterial wall to atherosclerosis...
  30. The Role of Dendrites in Thalamocortical Circuitry
    Randy M Bruno; Fiscal Year: 2013
    ..In reality though, synapses are made onto long, branching dendritic trees that can have complicated effects on normal integration of synaptic inputs...
  31. ADAPTATION OF NEW STATISTICAL IDEAS FOR MEDICINE
    Bradley Efron; Fiscal Year: 2013
    ..Olshen plans to extend CART (Computer Assisted Regression Trees) and bootstrap methodology to the selection of groups of promising predictive SNPs...
  32. The Prefrontal Cortex in Neuropathic pain
    Marco Martina; Fiscal Year: 2012
    ..to sham-operated counterparts, mPFC neurons from SNI rats expressed higher levels of c-Fos, have larger dendritic trees, increased dendritic spine density and different molecular composition of glutamate receptors...
  33. Direct nicotinic excitation of layer 5 neocortical pyramidal neurons
    Jack Waters; Fiscal Year: 2013
    ..subunits involved (specific aim 1), determine where in the activated nAChRs are located within the dendritic trees of pyramidal neurons (specific aim 2), and determine whether these postsynaptic nAChRs mediated the effects of ACh ..
  34. Geometry of gene cophylogenies as relates to genome evolution and speciation
    Ruriko Yoshida; Fiscal Year: 2012
    ..a new statistical model and corresponding methods and algorithms for simultaneous derivation of pairs of gene trees to allow rigorous tests of their codivergence or deviation from codivergence;(2) design and develop software that ..
  35. Establishing bioactive serum and toxicity levels for Nanolipolee-007
    Arati Sharma; Fiscal Year: 2012
    ..A natural product called leelamine, derived from the bark of pine trees, was identified as a potent potential regulator of these pathways...
  36. An Innovative Caregiver Tool to Assess and Manage Behavioral Symptoms of Dementia
    Helen C Kales; Fiscal Year: 2013
    ..efficiently and effectively assist caregivers by systematically guiding them through evidence-informed decision trees to: 1) assess and monitor presence and severity of behavioral symptoms;2) identify potential precipitating factors ..
  37. Symptoms of Lower Urinary Tract Dysfunction Research Network (LURN)Data Coordinat
    Robert M Merion; Fiscal Year: 2013
    ..phenotyping of patient cohorts with relevant LUTD symptoms using cluster analysis, classification and regression trees, and other data mining methods;and 3) identification of biomarkers related to symptom initiation, exacerbation, ..
  38. Computer-aided analysis of mechanisms matching ventilation and perfusion in rats
    Reinhard R Beichel; Fiscal Year: 2012
    ..regional perfusion and ventilation are tightly matched through the shared geometries of the airway and vascular trees. The highly-automated computer-aided segmentation methods to be developed in this project will provide the ability ..
  39. Large-Scale Characterization of Autoantibody Responses in Rheumatoid Arthritis
    William H Robinson; Fiscal Year: 2013
    ..We will then bioinformatically analyze the antibody sequences we obtain to generate evolutionary trees of the antibody repertoires and thereby identify and clone the affinity-matured antibodies that are likely the key ..
  40. Predicting the rate of progression in glaucoma
    Shaban Demirel; Fiscal Year: 2013
    ..second part of the project aims to use this new information and advanced analysis techniques (including regression trees) to better predict the future rate of functional change on a per-eye basis...
  41. An Observational Acute Stroke Model for Decision Support and Comparing Outcomes
    Gary Duckwiler; Fiscal Year: 2013
    ..g., logistic regression, decision trees);and the overall impact of the system to impact decision-making...
  42. Generation and Description of Neuronal Morphology and Connectivity
    Giorgio A Ascoli; Fiscal Year: 2013
    ..informatics tools were successfully designed and deployed to reproduce the three-dimensional shape of dendritic trees in the same format used to represent experimentally reconstructed neurons...
  43. Text Processing and Geospatial Uncertainty for Phylogeography of Zoonotic Viruses
    Matthew Scotch; Fiscal Year: 2013
    ..and their metadata can be downloaded and imported into software applications that generate phylogeographic trees and models for surveillance...
  44. In Vivo Imaging of Neuronal Plasticity in Mouse Visual Cortex
    Elly Nedivi; Fiscal Year: 2012
    ..Using this system we have imaged and reconstructed the dendritic trees of neurons in visual cortex of thy1-GFP transgenic mice...
  45. Autism: Social And Communication Predictors in Siblings
    REBECCA JEAN LANDA; Fiscal Year: 2013
    ..Statistical analyses will include ANOVA, Pearson's correlation, Classification and Regression Trees, regression models, and propensity score methods. High-impact findings are anticipated...
  46. A Web-Based Automatic Virtual Screening System
    Brian K Shoichet; Fiscal Year: 2013
    ..We will A. Use SEA to reorganize target-family trees, such as for kinases, GPCRs, and ion channels, by ligand rather than sequence similarity...
  47. Efficacy and Effectiveness of Multi-Behavior Interventions Relevant to HIV
    DOLORES ALBARRACIN; Fiscal Year: 2013
    ..behavior change and techniques to achieve it, an interactive website for researchers to use the data, and decision trees to derive combinatorial recommendations for different populations, facilitators, geographic areas, disease ..
  48. Optimizing Peripheral Nerve Regeneration using Computational Intelligence based T
    Xiaojun Yu; Fiscal Year: 2011
    ..Some research groups have applied artificial neural networks and decision trees to obtain the best model configuration for the prediction of the tissue engineering strategies...
  49. Estimation of HIV Transmission Dynamics Using Genetic Sequences of Virus
    ERIK MCCULLOUGH VOLZ; Fiscal Year: 2013
    ..to unify traditional models of infectious disease epidemics with the evolution of HIV described by phylogenetic trees. The potential of phylodynamic methods was demonstrated recently as the first estimates of the fundamental ..
  50. Phylogeography and Spatial Dynamics of Epidemic Rabies
    Leslie A Real; Fiscal Year: 2013
    ..Transmission of virus will be tracked within "transmission trees" and virus will evolve according to known evolutionary rates and mutation processes for RABV...
  51. Optimizing Multidisciplinary HIV Care Team for Maximal HAART Adherence
    Michael Alan Horberg; Fiscal Year: 2010
    ..Next, we will use classification and regression trees to determine which components of the team in combination are associated with maximal HAART adherence...
  52. Mechanisms of AMPA receptor-mediated activity-dependent development
    ANGELA MARIE JABLONSKI; Fiscal Year: 2013
    ..This process is important because neurons with different dendritic trees are distinctive in the way they receive, compute, and transmit information5...
  53. Diabetes Pharmacotherapy and Bladder Cancer: A Medicare Epidemiologic Study
    Nancy E Morden; Fiscal Year: 2013
    ..Cox's model, time-dependent covariates, inverse propensity weighting and classification and regression trees will be employed. This work will inform clinical practice and shared decision making...
  54. Computer-aided detection of non-calcified plaques in coronary CT angiograms
    Heang Ping Chan; Fiscal Year: 2013
    ..analysis, multiscale enhancement response, and dynamic balloon tracking specifically suited for coronary arterial trees, and (3) conducting the first ROC study to evaluate the effect of CADe on radiologists'detection of NCPs...
  55. Statistical Methods in Cancer Control and Epidemiology
    Bradley P Carlin; Fiscal Year: 2010
    ..Third, we consider semiparametric hierarchical models for cancer survival data using mixtures of Polya trees. Fourth, we consider the analysis of continuous-time spatiotemporal data arising from longitudinal experiments ..
  56. A New Approach to Phylogenetic Analysis Using Structural Information
    Abel Rodriguez; Fiscal Year: 2013
    ..employs Markov chain Monte Carlo algorithms to generate samples from the posterior distribution of alignments and trees given the sequences and structures, providing a straightforward procedure to compute probabilities of hypotheses ..
  57. A randomized trial of urban vacant lot stabilization and substance abuse outcomes
    Charles C Branas; Fiscal Year: 2013
    ..involves "cleaning and greening" abandoned vacant lots by removing debris, grading the land, planting grass and trees to create a park-like setting, and installing low fences around its perimeter to show that the lot is cared for ..
  58. COMPARATIVE MOLECULAR SEQUENCE ANALYSIS
    Sudhir Kumar; Fiscal Year: 2013
    ..data acquisition, making MEGA cross-platform, and implementing efficient heuristics for estimating very large trees quickly and inferring gene duplication events and divergence times...
  59. Enhanced endophyte:poplar system for remediation of organic contaminants
    Michael J Blaylock; Fiscal Year: 2013
    ..Phase I results demonstrated the ability of this bacterial endophyte to persist in the roots of poplar trees and significantly enhance the degradation of TCE compared to control poplar...
  60. Behavioral relevance of active dendritic mechanisms of integration and plasticity
    Daniel A Dombeck; Fiscal Year: 2013
    DESCRIPTION (provided by applicant): The dendritic trees of neurons in the brain's cortex conduct elemental brain functions such as information processing and learning...
  61. Analyzing Neural Stem Cell Clonal Development
    ANDREW ROBERT COHEN; Fiscal Year: 2013
    ..regions of the mouse cerebral cortex, we will identify whether region specification is encoded in lineage trees. Second, we will consider the role of FGF 10, an environmental factor related to regional specification, in ..
  62. Steer and trees summer research programs
    JEFFREY M FIELD; Fiscal Year: 2013
    ..research programs at the University of Pennsylvania, the Teen Research and Education in Environmental Science (TREES) Program, a high school research program and the Short Term Educational Experiences for Research (STEER) Program, ..
  63. A RuleFit Product for Classification and Regression
    DAN STEINBERG; Fiscal Year: 2007
    ..for advanced statistical and machine learning methods, particularly in the area of classi?cation and regression trees, sur- vival analysis, adaptive modeling, RANDOM FORESTS and MART. He will oversee all aspects of the project...
  64. Tracking Cancer Stem Cell Evolution
    John Welsh; Fiscal Year: 2009
    ..genetic heterogeneity in single tumors, and use this data to model tumor development by means of oncogenetic trees. Most of the branches on this oncogenetic tree will correspond to aberrant developmental pathways that do not ..
  65. CULTURE, PHYSIOLOGY, GENETICS, INFLUENCING TAXANE YIELDS
    RICK KELSEY; Fiscal Year: 1992
    ..Without intervention, wild trees will not be able to supply the quantities of taxol needed; moreover, species survival is potentially threatened by ..
  66. Biosynthesis of Taxol Precursors in Transgenic Moss
    Aldwin Anterola; Fiscal Year: 2009
    ..It was originally isolated from the bark of Pacific Yew in a process that kills the trees. These trees produce Taxol in such small amounts that it will take hundreds of trees to treat a patient...
  67. Analysis of clinical laboratory variables for early dengue illness classification
    James Potts; Fiscal Year: 2009
    ..Our long-term objective is to establish correlative models and classification trees that can be used for distinguishing children with dengue from children with other febrile illness (OFI) and ..
  68. Y CHROMOSOME EVOLUTION AND MODERN HUMAN ORIGINS
    Michael Hammer; Fiscal Year: 1999
    ..The data will be used to 1) construct Y chromosome haplotypes, 2) build phylogenetic trees of Y-haplotypes using great apes as an outgroup, 3) determine evolutionary rates of unique Y-linked sequences, 4) ..
  69. TREE-STRUCTURED STATISTICAL METHODS
    Richard Olshen; Fiscal Year: 1993
    Since the publication of the book Classification and Regression Trees, the program CART, which embodies tree-structured methods developed in the book, has been used widely and with success...
  70. COMPUTER BASED SEQUENCE ANALYSIS AND RNA VIRUS EVOLUTION
    MARCELLA MCCLURE; Fiscal Year: 1999
    ..Phylogenetic trees will provide a framework for the mapping of cell and tissue tropism, pathogenicity and virulence, modes of ..
  71. WHAT DAMAGE DOES VAGINAL BIRTH CAUSE
    John DeLancey; Fiscal Year: 2000
    ..3) Construct a predictive model for SUI using discriminant functions and classification trees to indicate the relative importance of support parameters, sphincter parameters, and their interactions...
  72. Hippocampal atrophy in major depression
    Craig Stockmeier; Fiscal Year: 2007
    ..be used to measure spine density, number of dendritic branch points and total length of apical and basal dendritic trees of pyramidal neurons in hippocampal CA1 & CA3 subfields in MDD...
  73. CHARACTERIZATION OF CORONARY PRONE PEDIGREES
    Roger Williams; Fiscal Year: 1990
    ..Using "Health Family Trees" collected yearly from parents of 12,000 Utah high school students, 200 pair of living siblings with confirmed ..
  74. Dengue Virus Determinants of Virulence and Transmission
    Rebeca Rico Hesse; Fiscal Year: 2009
    ..is a competing continuation of grant AI50123, under which we derived the first comprehensive dengue phylogenetic trees, showed that distinct virus genotypes correlate with disease severity, identified probable viral virulence ..