population density

Summary

Summary: Number of individuals in a population relative to space.

Top Publications

  1. ncbi Effects of biodiversity on the functioning of trophic groups and ecosystems
    Bradley J Cardinale
    Department of Ecology, Evolution and Marine Biology, University of California at Santa Barbara, Santa Barbara, California 93106, USA
    Nature 443:989-92. 2006
  2. pmc Inference of human population history from individual whole-genome sequences
    Heng Li
    The Wellcome Trust Sanger Institute, Hinxton, Cambridge CB10 1SA, UK
    Nature 475:493-6. 2011
  3. pmc Multilocus methods for estimating population sizes, migration rates and divergence time, with applications to the divergence of Drosophila pseudoobscura and D. persimilis
    Jody Hey
    Department of Genetics, Rutgers, State University of New Jersey, Piscataway, New Jersey 08854, USA
    Genetics 167:747-60. 2004
  4. pmc Anopheles gambiae: historical population decline associated with regional distribution of insecticide-treated bed nets in western Nyanza Province, Kenya
    M Nabie Bayoh
    Department of Microbiology and Molecular Genetics, Michigan State University, East Lansing, MI, 48824, USA
    Malar J 9:62. 2010
  5. pmc Maximum likelihood estimation of a migration matrix and effective population sizes in n subpopulations by using a coalescent approach
    P Beerli
    Department of Genetics, University of Washington, Seattle, WA 98195 7360, USA
    Proc Natl Acad Sci U S A 98:4563-8. 2001
  6. ncbi Fundamental concepts in genetics: effective population size and patterns of molecular evolution and variation
    Brian Charlesworth
    Institute of Evolutionary Biology, School of Biological Sciences, University of Edinburgh, Edinburgh EH9 3JT, UK
    Nat Rev Genet 10:195-205. 2009
  7. ncbi Strategies for containing an emerging influenza pandemic in Southeast Asia
    Neil M Ferguson
    Department of Infectious Disease Epidemiology, Faculty of Medicine, Imperial College London, St Mary s Campus, Norfolk Place, London W2 1PG, UK
    Nature 437:209-14. 2005
  8. ncbi Effects of species diversity on disease risk
    F Keesing
    Department of Biology, Bard College, PO Box 5000, Annandale, NY 12504, USA
    Ecol Lett 9:485-98. 2006
  9. ncbi Causes and consequences of animal dispersal strategies: relating individual behaviour to spatial dynamics
    Diana E Bowler
    UUniversity of Aberdeen, School of Biological Sciences, Tillydrone Avenue, Aberdeen
    Biol Rev Camb Philos Soc 80:205-25. 2005
  10. pmc Bayes estimation of species divergence times and ancestral population sizes using DNA sequences from multiple loci
    Bruce Rannala
    Department of Medical Genetics, University of Alberta, Edmonton, Alberta T6G 2H7, Canada
    Genetics 164:1645-56. 2003

Detail Information

Publications312 found, 100 shown here

  1. ncbi Effects of biodiversity on the functioning of trophic groups and ecosystems
    Bradley J Cardinale
    Department of Ecology, Evolution and Marine Biology, University of California at Santa Barbara, Santa Barbara, California 93106, USA
    Nature 443:989-92. 2006
    ....
  2. pmc Inference of human population history from individual whole-genome sequences
    Heng Li
    The Wellcome Trust Sanger Institute, Hinxton, Cambridge CB10 1SA, UK
    Nature 475:493-6. 2011
    ..We also infer that the differentiation of genetically modern humans may have started as early as 100-120 kyr ago, but considerable genetic exchanges may still have occurred until 20-40 kyr ago...
  3. pmc Multilocus methods for estimating population sizes, migration rates and divergence time, with applications to the divergence of Drosophila pseudoobscura and D. persimilis
    Jody Hey
    Department of Genetics, Rutgers, State University of New Jersey, Piscataway, New Jersey 08854, USA
    Genetics 167:747-60. 2004
    ..Several loci have nonzero estimates of gene flow since the initial separation of the species, with considerable variation in gene flow estimates among loci, in both directions between the species...
  4. pmc Anopheles gambiae: historical population decline associated with regional distribution of insecticide-treated bed nets in western Nyanza Province, Kenya
    M Nabie Bayoh
    Department of Microbiology and Molecular Genetics, Michigan State University, East Lansing, MI, 48824, USA
    Malar J 9:62. 2010
    ..l.) species complex, namely A. gambiae sensu stricto (s.s.) and Anopheles arabiensis. Historically, the former species was proportionately dominant in indoor resting collections of females...
  5. pmc Maximum likelihood estimation of a migration matrix and effective population sizes in n subpopulations by using a coalescent approach
    P Beerli
    Department of Genetics, University of Washington, Seattle, WA 98195 7360, USA
    Proc Natl Acad Sci U S A 98:4563-8. 2001
    ..The algorithm converges to the estimates fairly quickly, even when the Markov chain is started from unfavorable parameters. The method was used to estimate gene flow in the Nile valley by using mtDNA data from three human populations...
  6. ncbi Fundamental concepts in genetics: effective population size and patterns of molecular evolution and variation
    Brian Charlesworth
    Institute of Evolutionary Biology, School of Biological Sciences, University of Edinburgh, Edinburgh EH9 3JT, UK
    Nat Rev Genet 10:195-205. 2009
    ..In particular, the action of selection means that N(e) varies across the genome, and advances in genomic techniques are giving new insights into how selection shapes N(e)...
  7. ncbi Strategies for containing an emerging influenza pandemic in Southeast Asia
    Neil M Ferguson
    Department of Infectious Disease Epidemiology, Faculty of Medicine, Imperial College London, St Mary s Campus, Norfolk Place, London W2 1PG, UK
    Nature 437:209-14. 2005
    ..Policy effectiveness depends critically on how quickly clinical cases are diagnosed and the speed with which antiviral drugs can be distributed...
  8. ncbi Effects of species diversity on disease risk
    F Keesing
    Department of Biology, Bard College, PO Box 5000, Annandale, NY 12504, USA
    Ecol Lett 9:485-98. 2006
    ....
  9. ncbi Causes and consequences of animal dispersal strategies: relating individual behaviour to spatial dynamics
    Diana E Bowler
    UUniversity of Aberdeen, School of Biological Sciences, Tillydrone Avenue, Aberdeen
    Biol Rev Camb Philos Soc 80:205-25. 2005
    ..Further studies are necessary to explore the importance of incorporating specific condition-dependent dispersal strategies for evolutionary and population dynamic predictions...
  10. pmc Bayes estimation of species divergence times and ancestral population sizes using DNA sequences from multiple loci
    Bruce Rannala
    Department of Medical Genetics, University of Alberta, Edmonton, Alberta T6G 2H7, Canada
    Genetics 164:1645-56. 2003
    ..Our estimates, however, are affected by model assumptions as well as data quality. We suggest that reliable estimates have yet to await more data and more realistic models...
  11. pmc The ecology of infectious disease: effects of host diversity and community composition on Lyme disease risk
    Kathleen LoGiudice
    Institute of Ecosystem Studies, Box AB, Millbrook, NY 12545, USA
    Proc Natl Acad Sci U S A 100:567-71. 2003
    ..g., squirrels), characterized by high tick burdens, low reservoir competence, and high population density, as well as "rescue hosts" (e.g...
  12. ncbi Bayesian coalescent inference of past population dynamics from molecular sequences
    A J Drummond
    Department of Zoology, University of Oxford, Oxford, United Kingdom
    Mol Biol Evol 22:1185-92. 2005
    ....
  13. pmc Bayesian inference of ancient human demography from individual genome sequences
    Ilan Gronau
    Department of Biological Statistics and Computational Biology, Cornell University, Ithaca, New York, USA
    Nat Genet 43:1031-4. 2011
    ....
  14. ncbi Spatial and temporal heterogeneity of Anopheles mosquitoes and Plasmodium falciparum transmission along the Kenyan coast
    Charles M Mbogo
    Centre for Geographic Medicine Research Coast, Kenya Medical Research Institute, Kilifi, Kenya
    Am J Trop Med Hyg 68:734-42. 2003
    ..The field-based estimate of entomologic parameters on a district level does not provide a sensitive indicator of transmission intensity in this study...
  15. ncbi Rapid worldwide depletion of predatory fish communities
    Ransom A Myers
    Biology Department, Dalhousie University, Halifax, Nova Scotia, Canada B3H 4J1
    Nature 423:280-3. 2003
    ..Our analysis suggests that management based on recent data alone may be misleading, and provides minimum estimates for unexploited communities, which could serve as the 'missing baseline' needed for future restoration efforts...
  16. ncbi Estimating the rate of adaptive molecular evolution in the presence of slightly deleterious mutations and population size change
    Adam Eyre-Walker
    Centre for the Study of Evolution and School of Life Sciences, University of Sussex, Brighton, United Kingdom
    Mol Biol Evol 26:2097-108. 2009
    ....
  17. ncbi Climate change and distribution shifts in marine fishes
    Allison L Perry
    Centre for Ecology, Evolution and Conservation, School of Biological Sciences, University of East Anglia, Norwich NR4 7TJ, UK
    Science 308:1912-5. 2005
    ..Further temperature rises are likely to have profound impacts on commercial fisheries through continued shifts in distribution and alterations in community interactions...
  18. ncbi N-mixture models for estimating population size from spatially replicated counts
    J Andrew Royle
    Division of Migratory Bird Management, U S Fish and Wildlife Service, 11510 American Holly Drive, Laurel, Maryland 20708, USA
    Biometrics 60:108-15. 2004
    ..Both estimators are applied to point count data on six species of birds illustrating the sensitivity to choice of prior on p and substantially different estimates of abundance as a consequence...
  19. ncbi The origins of genome complexity
    Michael Lynch
    Department of Biology, Indiana University, Bloomington, IN 47405, USA
    Science 302:1401-4. 2003
    ..The enormous long-term effective population sizes of prokaryotes may impose a substantial barrier to the evolution of complex genomes and morphologies...
  20. ncbi Scaling of connectivity in marine populations
    R K Cowen
    Marine Biology and Fisheries, Rosenstiel School of Marine and Atmospheric Science, University of Miami, 4600 Rickenbacker Causeway, Miami, FL 33149, USA
    Science 311:522-7. 2006
    ..The results reveal distinct regions of population isolation based on larval dispersal that also correspond to genetic and morphological clines observed across a range of marine organisms...
  21. pmc The multiplicity of malaria transmission: a review of entomological inoculation rate measurements and methods across sub-Saharan Africa
    Louise A Kelly-Hope
    Vector Group, Liverpool School of Tropical Medicine, Liverpool, UK
    Malar J 8:19. 2009
    ..knowledge gaps, trends and changes in methodologies over time, and key differences between land use, population density, climate, and the main mosquito species...
  22. ncbi Collapse and conservation of shark populations in the Northwest Atlantic
    Julia K Baum
    Department of Biology, Dalhousie University, Halifax, NS, Canada B3H 4J1
    Science 299:389-92. 2003
    ..Closed-area models highlight priority areas for shark conservation, and the need to consider effort reallocation and site selection if marine reserves are to benefit multiple threatened species...
  23. ncbi Synchrony, waves, and spatial hierarchies in the spread of influenza
    Cecile Viboud
    Fogarty International Center, National Institutes of Health, Bethesda, MD 20892, USA
    Science 312:447-51. 2006
    ..A simple epidemiological model, based on the gravity formulation, captures the observed increase of influenza spatial synchrony with transmissibility; high transmission allows influenza to spread rapidly beyond local spatial constraints...
  24. ncbi Impact of sustained use of insecticide-treated bednets on malaria vector species distribution and culicine mosquitoes
    K A Lindblade
    Division of Parasitic Diseases, National Center for Infectious Diseases, Centers for Disease Control and Prevention, 4770 Buford Hwy MS F 22, Atlanta GA 30333, USA
    J Med Entomol 43:428-32. 2006
    ..Reductions in culicines by ITNs may have implications for community perceptions of ITN effectiveness and for control of other diseases such as lymphatic filariasis...
  25. pmc Sampling outdoor, resting Anopheles gambiae and other mosquitoes (Diptera: Culicidae) in western Kenya with clay pots
    M Odiere
    Vector Biology and Control Research Centre, Kenya Medical Research Institute, Kisumu, Kenya
    J Med Entomol 44:14-22. 2007
    ..sampling methods, indicating that the clay pots could be used as devices to quantify variation in mosquito population density. Dispersion patterns of the different species and sexes fit well the negative binomial distribution, ..
  26. pmc Urban scaling and its deviations: revealing the structure of wealth, innovation and crime across cities
    Luis M A Bettencourt
    Theoretical Division and Center for Nonlinear Studies, Los Alamos National Laboratory, Los Alamos, New Mexico, United States of America
    PLoS ONE 5:e13541. 2010
    ..S. metropolitan areas that is generally not organized geographically but based instead on common local economic models, innovation strategies and patterns of crime...
  27. ncbi Effect of temperature on the development of the aquatic stages of Anopheles gambiae sensu stricto (Diptera: Culicidae)
    M N Bayoh
    School of Biological and Biomedical Sciences Science Laboratories, University of Durham Durham DH1 3LE UK
    Bull Entomol Res 93:375-81. 2003
    ..gambiae s.s. corresponded closely with the best map of malaria risk currently available for Africa...
  28. pmc Population density, water supply, and the risk of dengue fever in Vietnam: cohort study and spatial analysis
    Wolf Peter Schmidt
    Department of Clinical Medicine, Institute of Tropical Medicine, Nagasaki University, Nagasaki, Japan
    PLoS Med 8:e1001082. 2011
    ..We analysed the interaction between human population density and lack of tap water as a cause of dengue fever outbreaks with the aim of identifying geographic areas at ..
  29. ncbi Hierarchical modelling and estimation of abundance and population trends in metapopulation designs
    Marc Kéry
    Swiss Ornithological Institute, 6204 Sempach, Switzerland
    J Anim Ecol 79:453-61. 2010
    ..The ability to obtain estimates of abundance and population trends that are unbiased with respect to any time trends in detectability ought to be a strong motivation for the collection of replicate observation data...
  30. ncbi Novel ecosystems: implications for conservation and restoration
    Richard J Hobbs
    School of Plant Biology, University of Western Australia, 35 Stirling Highway, Crawley, WA 6009, Australia
    Trends Ecol Evol 24:599-605. 2009
    ..We suggest that these novel systems will require significant revision of conservation and restoration norms and practices away from the traditional place-based focus on existing or historical assemblages...
  31. ncbi Anopheles gambiae s.s. breeding in polluted water bodies in urban Lagos, southwestern Nigeria
    T S Awolola
    Public Health Division, Nigerian Institute of Medical Research, Yaba, Lagos, Nigeria
    J Vector Borne Dis 44:241-4. 2007
    ..Urban malaria is on the rise in Nigeria due to rapid industrialisation and developmental activities. A study was undertaken in Lagos, Nigeria to study the Anopheles breeding in polluted water bodies...
  32. ncbi Phase shifts, herbivory, and the resilience of coral reefs to climate change
    Terence P Hughes
    Australian Research Council Centre of Excellence for Coral Reef Studies, James Cook University, Townsville QLD 4811, Australia
    Curr Biol 17:360-5. 2007
    ....
  33. ncbi Density-dependent development of Anopheles gambiae (Diptera: Culicidae) larvae in artificial habitats
    John E Gimnig
    Vector Biology and Control Research Centre, Kenya Medical Research Institute, Kisumu
    J Med Entomol 39:162-72. 2002
    ..The potential impact of density-dependent interactions among An. gambiae larvae on the transmission of Plasmodium falciparum is discussed...
  34. ncbi Nonidentifiability of population size from capture-recapture data with heterogeneous detection probabilities
    William A Link
    USGS Patuxent Wildlife Research Center, Laurel, Maryland 20708, USA
    Biometrics 59:1123-30. 2003
    ..The problem is illustrated with models for closed and open populations...
  35. ncbi Effect of temperature and inter-specific competition on the development and survival of Anopheles gambiae sensu stricto and An. arabiensis larvae
    Matthew J Kirby
    School of Biological and Biomedical Sciences, Durham University, Science Laboratories, UK
    Acta Trop 109:118-23. 2009
    ..gambiae s.s. throughout. The apparent greater production of An. arabiensis at high water temperatures and An. gambiae s.s. at lower water temperatures may in part explain the spatial and temporal distribution of the two species...
  36. ncbi The interaction of parasites and resources cause crashes in a wild mouse population
    Amy B Pedersen
    Department of Biology, University of Virginia, Charlottesville, VA 22904, USA
    J Anim Ecol 77:370-7. 2008
    ....
  37. ncbi Relationships between direct predation and risk effects
    Scott Creel
    Department of Ecology, Montana State University, Bozeman, MT 59717, USA
    Trends Ecol Evol 23:194-201. 2008
    ..Risk effects and direct effects do not necessarily change in parallel. When risk effects reduce reproduction rather than survival, they are easily mistaken for limitation by food supply...
  38. ncbi Effective population size and the Faster-X effect: empirical results and their interpretation
    Judith E Mank
    Department of Zoology, Edward Grey Institute, University of Oxford, Oxford, United Kingdom
    Evolution 64:663-74. 2010
    ..Our results suggest that differences in effective population size and mechanisms of dosage compensation may influence the perceived extent of Faster-X evolution, and help to explain several clade-specific patterns that we observe...
  39. ncbi A common rule for the scaling of carnivore density
    Chris Carbone
    Institute of Zoology, Zoological Society of London, Regent s Park, London NW1 4RY, UK
    Science 295:2273-6. 2002
    b>Population density in plants and animals is thought to scale with size as a result of mass-related energy requirements. Variation in resources, however, naturally limits population density and may alter expected scaling patterns...
  40. pmc Lonely hearts or sex in the city? Density-dependent effects in mating systems
    Hanna Kokko
    Laboratory of Ecological and Evolutionary Dynamics, Department of Biological and Environmental Science, University of Helsinki, PO Box 65 Vükinkaari 1, 00014 Helsinki, Finland
    Philos Trans R Soc Lond B Biol Sci 361:319-34. 2006
    ..We review both theoretical and empirical advances on how population density may influence aspects of mating systems such as intrasexual competition, female choice or resistance, and ..
  41. pmc Highly focused anopheline breeding sites and malaria transmission in Dakar
    Vanessa Machault
    Unité d entomologie médicale, Equipe 7 Maladies Emergentes et Moustiques, Institut de Medecine Tropicale du Service de Sante des Armees, Allée du Médecin Colonel Jamot, Parc du Pharo, 13262 Marseille cedex 07, France
    Malar J 8:138. 2009
    ....
  42. pmc House design modifications reduce indoor resting malaria vector densities in rice irrigation scheme area in western Kenya
    Harrysone Atieli
    Kenya Medical Research Institute, Kisumu, Kenya
    Malar J 8:108. 2009
    ..A randomized-controlled study was, therefore, undertaken to determine the effects of this method of vector control on the density of indoor resting malaria vectors in a rice irrigation scheme area in lowlands of western Kenya...
  43. ncbi Association between land cover and habitat productivity of malaria vectors in western Kenyan highlands
    Stephen Munga
    Kenya Medical Research Institute, Kisumu, Kenya
    Am J Trop Med Hyg 74:69-75. 2006
    ..gambiae larvae, and consequently increase the risks of malaria transmission to the human population...
  44. ncbi Impacts of climate, host and landscape factors on Culicoides species in Scotland
    B V Purse
    NERC Centre for Ecology and Hydrology, Penicuik, U K
    Med Vet Entomol 26:168-77. 2012
    ..Modelling approaches that may facilitate the more accurate prediction of local abundance patterns for a wider range of Culicoides species are discussed...
  45. pmc The risk of a mosquito-borne infection in a heterogeneous environment
    David L Smith
    Fogarty International Center, National Institutes of Health, Bethesda, Maryland, USA
    PLoS Biol 2:e368. 2004
    ..populations; it peaks where old mosquitoes are found, far from mosquito breeding habitat, and when mosquito population density is declining...
  46. pmc Weather variability affects abundance of larval Culex (Diptera: Culicidae) in storm water catch basins in suburban Chicago
    Allison M Gardner
    Department of Pathobiology, University of Illinois at Urbana Champaign, 2001 South Lincoln Avenue, Urbana IL 61802, USA
    J Med Entomol 49:270-6. 2012
    ....
  47. pmc Estimating contemporary effective population size on the basis of linkage disequilibrium in the face of migration
    Robin S Waples
    National Oceanic and Atmospheric Administration, Northwest Fisheries Science Center, Seattle, Washington 98112, USA
    Genetics 189:633-44. 2011
    ..The above results assume loci are not physically linked; for tightly linked loci, the LD signal from past migration events can persist for many generations, with consequences for Ne estimates that remain to be evaluated...
  48. ncbi Critical thresholds associated with habitat loss: a review of the concepts, evidence, and applications
    Trisha L Swift
    Department of Biological Sciences, University of Alberta, Edmonton, Alberta, T6G 2E9 Canada
    Biol Rev Camb Philos Soc 85:35-53. 2010
    ..The judicious use of statistics to help determine the shape of ecological relationships would permit greater objectivity and more comparability among studies...
  49. ncbi Characteristics of larval anopheline (Diptera: Culicidae) habitats in Western Kenya
    J E Gimnig
    Kenya Medical Research Institute, Centre for Vector Biology and Control Research, Kisumu
    J Med Entomol 38:282-8. 2001
    ..Together, these results indicate that An. gambiae and An. arabiensis have similar requirements for the larval environment and that, at least in western Kenya, they do not segregate into separate habitats...
  50. pmc Weather and land cover influences on mosquito populations in Sioux Falls, South Dakota
    Ting Wu Chuang
    Geographic Information Science Center of Excellence, South Dakota State University, Brookings, SD 57007, USA
    J Med Entomol 48:669-79. 2011
    ....
  51. ncbi Sex releases the speed limit on evolution
    Nick Colegrave
    Institute of Cell, Animal and Population Biology, University of Edinburgh, Edinburgh EH9 3JT, UK
    Nature 420:664-6. 2002
    ..These results indicate that clonal interference is important in this system...
  52. ncbi Age, sex, density, winter weather, and population crashes in Soay sheep
    T Coulson
    Institute of Zoology, Zoological Society of London, Regent s Park, London NW1 4RY, UK
    Science 292:1528-31. 2001
    ..In addition, the strength of density-dependent processes is a function of the distribution of weather events. Incorporating demographic heterogeneities into population models can influence dynamics and their response to climate change...
  53. pmc Interdependence of domestic malaria prevention measures and mosquito-human interactions in urban Dar es Salaam, Tanzania
    Yvonne Geissbuhler
    Swiss Tropical Institute, Department of Public Health and Epidemiology, Socinstrasse 57, PO Box, 4002 Basel, Switzerland
    Malar J 6:126. 2007
    ..Here mosquito biting patterns in Dar es Salaam, Tanzania are examined and the protection against exposure to malaria transmission that is afforded to residents by using an insecticide-treated net (ITN) is estimated...
  54. pmc Inferring population decline and expansion from microsatellite data: a simulation-based evaluation of the Msvar method
    Christophe Girod
    Centre National de la Recherche Scientifique Muséum National d Histoire Naturelle, Brunoy, France
    Genetics 188:165-79. 2011
    ..Finally, our results suggest that Msvar is robust to moderate departures from a strict stepwise mutation model...
  55. ncbi Serotonin mediates behavioral gregarization underlying swarm formation in desert locusts
    Michael L Anstey
    Department of Zoology, University of Oxford, South Parks Road, Oxford, OX1 3PS, UK
    Science 323:627-30. 2009
    ..between a little-seen solitarious phase and the notorious swarming gregarious phase depending on population density. An essential tipping point in the process of swarm formation is the initial switch from strong mutual ..
  56. ncbi Spatially explicit maximum likelihood methods for capture-recapture studies
    D L Borchers
    Research Unit for Wildlife Population Assessment, The Observatory, Buchanan Gardens, University of St Andrews, Fife, KY16 9LZ, Scotland
    Biometrics 64:377-85. 2008
    ..A variety of additional spatially explicit models are fitted; these include models with temporal stratification, behavioral response, and heterogeneous animal home ranges...
  57. ncbi Realistic distributions of infectious periods in epidemic models: changing patterns of persistence and dynamics
    A L Lloyd
    Program in Theoretical Biology, Institute for Advanced Study, Einstein Drive, Princeton, New Jersey 08540, USA
    Theor Popul Biol 60:59-71. 2001
    ..Since it has a major effect on the central issues of population persistence and dynamics, the results of this study have broad implications for mathematical modellers of a wide range of biological systems...
  58. ncbi 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...
  59. pmc Effective population size and the efficacy of selection on the X chromosomes of two closely related Drosophila species
    Peter Andolfatto
    Department of Ecology and Evolutionary Biology and Lewis Sigler Institute for Integrative Genomics, Princeton University, USA
    Genome Biol Evol 3:114-28. 2011
    ....
  60. pmc Estimating selection intensity on synonymous codon usage in a nonequilibrium population
    Kai Zeng
    Institute of Evolutionary Biology, School of Biological Sciences, University of Edinburgh, Edinburgh, UK
    Genetics 183:651-62, 1SI-23SI. 2009
    ..melanogaster...
  61. ncbi Multiple Allee effects and population management
    Ludek Berec
    Department of Theoretical Ecology, Institute of Entomology, Biology Centre ASCR, Branisovska 31, 37005 Ceske Budejovice, Czech Republic
    Trends Ecol Evol 22:185-91. 2007
    ..We suggest that more research is needed to assess the prevalence and interactions of multiple Allee effects, as failing to take them into account could have adverse consequences for the management of threatened or exploited populations...
  62. ncbi Trade-offs and the evolution of life-histories during range expansion
    Olivia J Burton
    Institute of Biological and Environmental Sciences, University of Aberdeen, Zoology Building, Tillydrone Avenue, Aberdeen AB242TZ, UK
    Ecol Lett 13:1210-20. 2010
    ..These findings have important implications for understanding both the rate of spread of invasive species and the range-shifting dynamics of native species in response to climate change...
  63. ncbi Early warning signals of extinction in deteriorating environments
    John M Drake
    Odum School of Ecology, University of Georgia, Athens, Georgia 30602, USA
    Nature 467:456-9. 2010
    ..The universality of bifurcations in models of population dynamics suggests that this phenomenon should be general...
  64. ncbi Effective population size and the faster-X effect: an extended model
    Beatriz Vicoso
    Institute of Evolutionary Biology, School of Biological Science, University of Edinburgh, United Kingdom
    Evolution 63:2413-26. 2009
    ..We show that, when the rate of nonsynonymous evolution is normalized by the rate of neutral evolution, a sex difference in mutation rate has no influence on the conditions for faster-X evolution...
  65. ncbi A pseudo-likelihood method for estimating effective population size from temporally spaced samples
    J Wang
    Institute of Zoology, Zoological Society of London, Regent s Park, London NW1 4RY, UK
    Genet Res 78:243-57. 2001
    ..In an application of the pseudo-likelihood method to a large data set of an olive fly population, more precise estimates of Ne are obtained than those from the F-statistic method...
  66. pmc Tigers and their prey: Predicting carnivore densities from prey abundance
    K Ullas Karanth
    Wildlife Conservation Society, India Program, 26 2, Aga Abbas Ali Road, Apartment 403, Bangalore, Karnataka 560042, India
    Proc Natl Acad Sci U S A 101:4854-8. 2004
    ..In addition to generating important insights into carnivore ecology and conservation, the study provides a potentially useful model for the rigorous conduct of macroecological science...
  67. ncbi Relationships between body size and abundance in ecology
    Ethan P White
    Department of Biology and the Ecology Center, Utah State University, Logan, UT 84322, USA
    Trends Ecol Evol 22:323-30. 2007
    ..We argue that a synthetic understanding of size-abundance relationships will result from more detailed analyses of individual patterns and from careful consideration of how and why the patterns are related...
  68. ncbi Does targeting key-containers effectively reduce Aedes aegypti population density?
    Rafael Maciel-de-Freitas
    Laboratório de Transmissores de Hematozoários, Instituto Oswaldo Cruz, Rio de Janeiro, Brazil
    Trop Med Int Health 16:965-73. 2011
    The elimination of Aedes aegypti breeding sites has been broadly adopted worldwide to keep vector population density below a critical threshold. We observed the effectiveness of targeting the most productive containers on adult A...
  69. pmc Predicting the spatial dynamics of rabies epidemics on heterogeneous landscapes
    David L Smith
    Department of Epidemiology and Preventive Medicine, University of Maryland, 115 Howard Hall, 660 West Redwood Street, Baltimore, MD 21201, USA
    Proc Natl Acad Sci U S A 99:3668-72. 2002
    ....
  70. ncbi Polyphenism in insects
    Stephen J Simpson
    School of Biological Sciences, The University of Sydney, NSW 2006, Australia
    Curr Biol 21:R738-49. 2011
    ..We conclude by highlighting some of the common features of these examples and consider future avenues for research on polyphenism...
  71. ncbi Explaining the excess of rare species in natural species abundance distributions
    Anne E Magurran
    Gatty Marine Laboratory, School of Biology, University of St Andrews, St Andrews, Fife KY16 8LB, UK
    Nature 422:714-6. 2003
    ..These distributions are overlaid, producing the negative skew that characterizes real data sets...
  72. pmc Estimating animal population density using passive acoustics
    Tiago A Marques
    Centre for Research into Ecological and Environmental Modelling, University of St Andrews, The Observatory, Buchanan Gardens, Fife, KY16 9LZ, UK
    Biol Rev Camb Philos Soc 88:287-309. 2013
    ..Evaluation of the methods under known density scenarios will be important for empirically validating the approaches presented here...
  73. pmc A regional-scale, high resolution dynamical malaria model that accounts for population density, climate and surface hydrology
    Adrian M Tompkins
    Earth System Physics, Abdus Salam International Centre for Theoretical Physics, Strada Costiera 11, Trieste, Italy
    Malar J 12:65. 2013
    ..The relative roles of climate variability and population related effects in malaria transmission could be better understood if regional-scale dynamical malaria models could account for these factors...
  74. ncbi A phyto-sociological analysis of the distribution of riverine tsetse flies in Burkina Faso
    J Bouyer
    Centre de Cooperation Internationale en Recherche Agronomique pour le Developpement, Département élevage et médecine vétérinaire, Montpellier, France
    Med Vet Entomol 19:372-8. 2005
    ..tachinoides in half-disturbed Sudanese gallery forest sites, confirming their high resilience to human-made changes. The importance of a detailed consideration of riverine ecotypes when predicting tsetse densities is discussed...
  75. ncbi Mammal population losses and the extinction crisis
    Gerardo Ceballos
    Instituto de Ecologia, Universidad Nacional Autonoma de Mexico, Apdo, Postal 70 275, Mexico D F 04510, Mexico
    Science 296:904-7. 2002
    ..This implies a serious loss of ecosystem services and goods. It also signals a substantial threat to species diversity...
  76. ncbi Understanding and estimating effective population size for practical application in marine species management
    Matthew P Hare
    Department of Natural Resources, Cornell University, Ithaca NY 14853, USA
    Conserv Biol 25:438-49. 2011
    ..Two cases discussed include the mechanisms generating N(e) estimates many orders of magnitude lower than census N in harvested marine fishes and the predicted reduction in N(e) from hatchery-based population supplementation...
  77. ncbi Density-dependent effects in experimental larval populations of Anopheles arabiensis (Diptera: Culicidae) can be negative, neutral, or overcompensatory depending on density and diet levels
    J R L Gilles
    Insect Pest Control Laboratory, Joint Food and Agriculture Organization International Atomic Energy Agency, Division of Nuclear Techniques in Food and Agriculture, International Atomic Energy Agency, Vienna, Austria
    J Med Entomol 48:296-304. 2011
    ..We discuss these results in the context of diet and larval densities for mass rearing and the effect of larval competition on control strategies...
  78. pmc Habitat characterization and spatial distribution of Anopheles sp. mosquito larvae in Dar es Salaam (Tanzania) during an extended dry period
    Michael A Sattler
    Swiss Tropical Institute, P, O, Box, 4002 Basel, Switzerland
    Malar J 4:4. 2005
    ..mosquitoes are a promising strategy for urban areas. However, a precise knowledge of the geographic location and potentially of ecological characteristics of breeding sites is of major importance for such interventions...
  79. ncbi The influence of host number on the attraction of biting midges, Culicoides spp., to light traps
    A Garcia-Saenz
    Departament de Sanitat i d Anatomia Animals, Universitat Autonoma de Barcelona, Barcelona, Spain
    Med Vet Entomol 25:113-5. 2011
    ....
  80. ncbi A new method for estimating effective population sizes from a single sample of multilocus genotypes
    Jinliang Wang
    Institute of Zoology, Zoological Society of London, London, UK
    Mol Ecol 18:2148-64. 2009
    ..With some modification, it could be applied to monoecious diploid populations with self-fertilization, and to populations with overlapping generations...
  81. pmc Relevant microclimate for determining the development rate of malaria mosquitoes and possible implications of climate change
    Krijn P Paaijmans
    Laboratory of Entomology, Wageningen University, PO Box 8031, 6700EH Wageningen, The Netherlands
    Malar J 9:196. 2010
    ..Many process-based models use mean air temperature to estimate larval development times, and hence adult vector densities and/or malaria risk...
  82. ncbi Genetic estimates of contemporary effective population size: what can they tell us about the importance of genetic stochasticity for wild population persistence?
    Friso P Palstra
    Biology Department, Dalhousie University, 1355 Oxford Street, Halifax, Canada B3H 4J1
    Mol Ecol 17:3428-47. 2008
    ..Reductions in contemporary gene flow due to ongoing habitat fragmentation will likely increase the prevalence of genetic stochasticity, which should therefore remain a focal point in the conservation of biodiversity...
  83. ncbi Population sizes and dispersal pattern of tsetse flies: rolling on the river?
    J Bouyer
    CIRAD, UMR CIRAD INRA Contrôle des maladies animales, Campus International de Baillarguet, F34398, Montpellier, France
    Mol Ecol 18:2787-97. 2009
    ..They can be applied to other vector-borne diseases of medical and/or economic importance...
  84. pmc Evidence for variation in the effective population size of animal mitochondrial DNA
    Gwenael Piganeau
    UPMC Univ Paris 06, UMR 7628, MBCE, Observatoire Oceanologique, Banyuls mer, France
    PLoS ONE 4:e4396. 2009
    ....
  85. pmc Climate warming, marine protected areas and the ocean-scale integrity of coral reef ecosystems
    Nicholas A J Graham
    School of Marine Science and Technology, Newcastle University, Newcastle upon Tyne, United Kingdom
    PLoS ONE 3:e3039. 2008
    ....
  86. ncbi Estimating cetacean population density using fixed passive acoustic sensors: an example with Blainville's beaked whales
    Tiago A Marques
    Centre for Research into Ecological and Environmental Modelling, The Observatory, University of St Andrews, St Andrews, Scotland
    J Acoust Soc Am 125:1982-94. 2009
    ..3-36.9 and 15.4-32.9. These methods are potentially applicable to a wide variety of marine and terrestrial species that are hard to survey using conventional visual methods...
  87. ncbi Does irrigated urban agriculture influence the transmission of malaria in the city of Kumasi, Ghana?
    Yaw Asare Afrane
    Kumasi Centre for Collaborative Research in Tropical Medicine, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana
    Acta Trop 89:125-34. 2004
    ..Therefore more detailed studies, also in other cities with different water sources and irrigation systems, and a better spatial distribution of sites with and without urban agriculture than in Kumasi are needed...
  88. pmc Large-scale absence of sharks on reefs in the greater-Caribbean: a footprint of human pressures
    Christine A Ward-Paige
    Department of Biology, Dalhousie University, Halifax, Nova Scotia, Canada
    PLoS ONE 5:e11968. 2010
    ..Here we explore the contemporary distribution and sighting frequency of sharks on reefs in the greater-Caribbean and assess the possible role of human pressures on observed patterns...
  89. ncbi Quantifying the slightly deleterious mutation model of molecular evolution
    Adam Eyre-Walker
    Centre for the Study of Evolution and School of Biological Sciences, University of Sussex, Brighton BN1 9QG, UK
    Mol Biol Evol 19:2142-9. 2002
    ..Only approximately 10% or fewer of mutations seem to behave as SDMs, but SDMs could comprise a substantial fraction of mutations in protein-coding genes that have a chance of becoming fixed between species...
  90. ncbi Spatial genetic structure in continuous and fragmented populations of Pinus pinaster Aiton
    A I de-Lucas
    Departamento de Producción Vegetal y Recursos Forestales, E T S Ingenierías Agrarias, Universidad de Valladolid, Avenida de Madrid 44, E 34004 Palencia, Spain
    Mol Ecol 18:4564-76. 2009
    ..This suggests that factors such as nonrandom mating or selection not considered in the simulations were additionally operating on SGS in Iberian maritime pine populations...
  91. ncbi Cetacean population density estimation from single fixed sensors using passive acoustics
    Elizabeth T Küsel
    Cooperative Institute for Marine Resources Studies CIMRS, Oregon State University, Hatfield Marine Science Center, Newport, Oregon 97365, USA
    J Acoust Soc Am 129:3610-22. 2011
    Passive acoustic methods are increasingly being used to estimate animal population density. Most density estimation methods are based on estimates of the probability of detecting calls as functions of distance...
  92. ncbi Genetic estimates of contemporary effective population size: to what time periods do the estimates apply?
    Robin S Waples
    Northwest Fisheries Science Center, Seattle, WA 98112, USA
    Mol Ecol 14:3335-52. 2005
    ..These results lead to some general conclusions about genetic estimates of Ne in iteroparous species with overlapping generations and identify areas in need of further research...
  93. ncbi Geographical variation in the influence of density dependence and climate on the recruitment of Norwegian moose
    Vidar Grøtan
    Department of Biology, Centre for Conservation Biology, Norwegian University of Science and Technology, 7491 Trondheim, Norway
    Oecologia 161:685-95. 2009
    ..These patterns demonstrate both direct and delayed effects of weather on the recruitment of moose that possibly operate through an effect of body mass on the proportion of the females that sexually mature as 1.5 or 2.5 years old...
  94. ncbi Size-spectra dynamics from stochastic predation and growth of individuals
    Richard Law
    Biology Department, University of York, P O Box 373, York YO105YW, United Kingdom
    Ecology 90:802-11. 2009
    ..Wavelength depends on the size of prey relative to the size of predator, and wave speed depends on how fast mass moves through the spectrum...
  95. ncbi Density-dependent prophylactic immunity reconsidered in the light of host group living and social behavior
    Simon L Elliot
    Department of Animal Biology, Federal University of Vicosa, VI, cosa, MG, 36571 000, Brazil
    Ecology 91:65-72. 2010
    ..This may escape our notice if we consider physiological parameters alone...
  96. pmc In situ measurement of coastal ocean movements and survival of juvenile Pacific salmon
    David W Welch
    Kintama Research Services, Nanaimo, BC, Canada
    Proc Natl Acad Sci U S A 108:8708-13. 2011
    ....
  97. ncbi Comparison of contemporary mating patterns in continuous and fragmented Eucalyptus globulus native forests
    Makiko Mimura
    Graduate School of Life and Environmental Sciences, University of Tsukuba, Tenoudai 1 1 1, Tsukuba, Japan
    Mol Ecol 18:4180-92. 2009
    ..The mating patterns in the two continuous populations were similar, despite large differences in population density. In contrast, the two fragmented populations were variable and idiosyncratic in their mating patterns, ..
  98. ncbi Influence of biotic and abiotic factors on the distribution and abundance of Culicoides imicola and the Obsoletus Complex in Italy
    A Conte
    Istituto Zooprofilattico Sperimentale dell Abruzzo e del Molise, Via Campo Boario, 64100, Teramo, Italy
    Vet Parasitol 150:333-44. 2007
    ....
  99. ncbi 50,000 years of genetic uniformity in the critically endangered Iberian lynx
    Ricardo Rodriguez
    Centro Mixto, Universidad Complutense de Madrid Instituto de Salud Carlos III de Evolución y Comportamiento Humanos, Avda Monforte de Lemos 5, Pabellón 14 28029 Madrid, Spain
    Mol Ecol 20:3785-95. 2011
    ..We conclude that low genetic variability in the Iberian lynx is not in itself a threat to long-term viability, and so should not preclude conservation efforts...
  100. ncbi 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...
  101. ncbi Dynamics of a small re-introduced population of wild dogs over 25 years: Allee effects and the implications of sociality for endangered species' recovery
    Michael J Somers
    Centre for Wildlife Management, University of Pretoria, Pretoria, 0002, South Africa
    Oecologia 158:239-47. 2008
    ..This study demonstrates how aspects of a species' social behaviour can influence the vulnerability of small populations to extinction and illustrates the profound implications of sociality for endangered species' recovery...

Research Grants62

  1. OmpR and SsrB Regulation of Salmonella Virulence
    Linda J Kenney; Fiscal Year: 2013
    ..gastroenteritis is a significant cause of morbidity among travelers, deployed military personnel and high population density closed communities (e.g. military bases, hospitals or nursing homes)...
  2. The Ecology, Emergence and Pandemic Potential of Nipah virus in Bangladesh
    Peter Daszak; Fiscal Year: 2012
    ..We propose that human population density and social behavior in Bangladesh, NiV viral biology, NiV ecology in fruit bats, and interactions between ..
  3. Olfactory and behavioral responses of kissing bugs (Reduviidae: Triatominae), vec
    John G Hildebrand; Fiscal Year: 2010
    ..g., under conditions of low insect population density), thus reducing the use of undesirable insecticides...
  4. Ecology of Infectious Diseases (EID)-Immune Landscapes of Human Influenza in Hous
    Derek Cummings; Fiscal Year: 2011
    ..For example, both population density and average socio-economic status vary massively over relatively small distances...
  5. Oxalate handling and Oxalobacter formigenes colonization in a mouse model
    John Knight; Fiscal Year: 2013
    ..and kidney stone formation, its natural history in humans, and the factors governing its persistence, population density and distribution have still not been clearly elucidated...
  6. Neighborhood Characteristics and Body Mass Index: Selection or Causation?
    Ken Smith; Fiscal Year: 2009
    ..Walkable neighborhoods, as measured by population density, pedestrian-friendly design, and land-use diversity are associated with lower levels of individual BMI. 2...
  7. Sleep and Health in the Social Environment
    Michael A Grandner; Fiscal Year: 2013
    ..with area-level measures (derived using respondents'address) of neighborhood variables, including population density, socioeconomic status, social isolation, traffic, noise, an crime/violence, and whether external sources of ..
  8. Probing oral pathogen interactions in picoliter-scale enclosures
    AIMEE KATHERINE WESSEL; Fiscal Year: 2013
    ..apos;count'their cell numbers using signaling molecules, and modulate group behavior based upon population density. The concentration of these quorum signals within the human mouth is likely affected by multiple ..
  9. Adaptive Evolutionary Responses of White-footed Mice (Peromyscus leucopus) to Urb
    Jason Munshi-South; Fiscal Year: 2012
    ..Statistical associations between landscape elements (e.g. soil pollution, population density, habitat type) and informative variants will be investigated using new spatial genomic techniques...
  10. Geostatistical software for the analysis of individual-level epidemiologic data
    PIERRE E GOOVAERTS; Fiscal Year: 2010
    ..g. contextual factors), model for population density and locational uncertainty due to geocoding errors;(3) the identification of clusters and hotspots of ..
  11. Chemical Tools to Delineate the Pseudomonas aeruginosa Quorum Sensing Circuit
    Nora R Eibergen; Fiscal Year: 2013
    ..provided by applicant): Bacteria use quorum sensing (QS) to induce specific phenotypes as a function of population density. In Gram-negative bacteria, this QS process is largely driven by the detection of structurally distinct N-..
  12. Eukaryotic Perception of Prokaryotic Quorum Signals
    ANDREW GEORGE PALMER; Fiscal Year: 2010
    ..provided by applicant): Many bacteria regulate virulence factor expression as a function of their population density. This phenomenon, known as 'quorum sensing'(QS), is driven by the detection of a variety of small ..
  13. Surveillance and Modeling of West Nile Virus Risk in California
    Jessica Healy; Fiscal Year: 2013
    ..using various ecological and population-based predictor variables, such as surveillance measures, human population density, climate, and mosquito-host biting preference...
  14. CENTRAL ILLINOIS COMMUNITY CLINICAL ONCOLOGY PROGRAM
    James L Wade; Fiscal Year: 2013
    ..It serves 42 counties in central, northeast and southern Illinois, a large, mostly rural area with low population density, and an aging population with low minority representation...
  15. Al-2-Dependent Quorum Sensing in the Gram-Positive Bacterium Streptococcus pyogen
    Michael J Federle; Fiscal Year: 2010
    ..Quorum sensing is a cell-cell communication process by which bacteria regulate behaviors as a function of cell population density. Quorum sensing involves the production, secretion, and detection of signal molecules termed autoinducers...
  16. Coordinating Cell Killing by Communication: Biological Control and Cancer Therapy
    Lingchong You; Fiscal Year: 2010
    ..Quorum sensing is a mechanism by which bacteria sense and respond to changes in their population density. Built upon strong preliminary data, the proposed research will focus on design, modeling, implementation, ..
  17. Function of MVFR in Pseudomonas aeruginosa virulence
    Laurence G Rahme; Fiscal Year: 2012
    ..b>Population density-dependent signaling, generally referred to as quorum sensing (QS), is one such mechanism...
  18. Southeast Cancer Control Consortium, Inc
    JAMES NORMAN ATKINS; Fiscal Year: 2013
    ..The catchment of the referral communities is estimated at 8.4 million, with demographics reflecting a low population density, limited socioeconomic and educational development, female percentage greater than 50%, and ratio of African ..
  19. Contact among Utah School-aged Populations (CUSP)
    Matthew H Samore; Fiscal Year: 2012
    ..and climatic variability of Utah including stratification for rurality, average seasonal temperature, population density, ethnicity, socioeconomic status, and natural catchment area of the school...
  20. Colorado Injury Control Research Center
    Lorann Stallones; Fiscal Year: 2011
    ..In the region, 23.2% of the population is rural non-farm, and 2.3% are rural farm residents. The population density of each state in the region is significantly lower than the US as a whole;these population densities have ..
  21. Early Clinical Trials of New Anti-Cancer Agents with Phase I Emphasis (U01)
    Robert S DiPaola; Fiscal Year: 2013
    ..Expected to reach a population of 9,000,000 by 2008, New Jersey has the highest population density in the United States, with an average of 1,174 people per square mile, which is 13 times the national ..
  22. Promoting Physical Activity in High Poverty Neighborhoods
    Deborah A Cohen; Fiscal Year: 2013
    ..Parks in low-income neighborhoods tend to be smaller and serve a greater population density, but even after accounting for the size and population served, they are still used less than parks in ..
  23. 4th ASM Conference on Cell-Cell Communication in Bacteria
    Gary M Dunny; Fiscal Year: 2011
    ..Many microbes use these signaling mechanisms to monitor and respond to population density, a process often described as quorum sensing...
  24. Manipulating quorum sensing system to control pathogenicity in Vibrio cholerae
    ALICE KYUNGSUN MIN; Fiscal Year: 2013
    ..cholerae to synchronously alter its behavior in response to changes in the population density and species composition of the vicinal bacterial community. In V...
  25. Natural and Synthetic Small-Molecule Modulators of Dauer Development in Nematodes
    Rebecca A Butcher; Fiscal Year: 2012
    ..is constitutively secreted into the environment by the nematode, and thus enables the nematode to sense its population density. Dauer pheromone and food signal are thought to modulate the TGFp and insulin/IGF-1 pathways, which regulate ..
  26. The impact of pediatric trauma centers on the outcome of injured children in Ohio
    Laura D Cassidy; Fiscal Year: 2013
    ..Large TCs, including PTCs, are generally located in urban settings with a high population density. This creates a health disparity, leaving children in rural settings at a disadvantage and more vulnerable ..
  27. Minimizing Access Disparities in Bio Emergency Response Planning
    ARMIN ROBERT MIKLER; Fiscal Year: 2013
    ..the spatial distribution of Points of Dispensing (PODs) within a given geographic region, overall population density, and predicted traffic demands, it may fail to reach specific subpopulations, thereby resulting in access ..
  28. A Tailored Cue-Card Driven HIV/STI Intervention for High Risk Groups Pilot Study
    William A Zule; Fiscal Year: 2010
    ..While HIV risk groups in rural areas are similar to those in urban areas, the lower population density results in smaller numbers of most groups, such as injecting drug users (IDUs) and noninjecting drug users, ..
  29. Chemical Strategies to Manipulate A1-2 Signaling in Bacterial Pathogens
    Kim D Janda; Fiscal Year: 2013
    ..molecules, called autoinducers, and responds to these molecules, which thus serve as indicators of the population density. QS circuits control complex bacterial behaviors, such as bioluminescence, virulence, antibiotic resistance, ..
  30. Impact of Zoning Code Reforms on the Built Environment and Physical Activity Beha
    Jamie F Chriqui; Fiscal Year: 2013
    ..and US Geological Survey);(2) sprawl/street connectivity and traffic safety using Census Tiger files;(3) population density and neighborhood disadvantage using ACS data;and (4) pedestrian fatalities using data from NHTSA's ..
  31. Dynamics and Bifurcations of Population Structures Induced by Cell Cycle Feedback
    ERIK MIKLOS BOCZKO; Fiscal Year: 2012
    ..in yeast we have shown that cell cycle dependent feedback of a non-local form can produce an oscillating population density. The mathematical results, observed across a wide range of models, with and without randomness, suggest that ..
  32. 3rd ASM Conference on Cell-Cell Communication in Bacteria
    WILLIAM FUQUA; Fiscal Year: 2007
    ..Many bacteria use these signaling mechanisms to monitor and respond to population density, a process often described as quorum sensing...
  33. Quorum Sensing in Sinorhizobium meliloti
    Juan Gonzalez; Fiscal Year: 2009
    ..We have shown that quorum sensing, a process that involves the population density-dependent regulation of gene expression, plays an integral part of this complex association...
  34. Mechanisms of reproductive, developmental, and early life stage impacts of marine
    Andrew Whitehead; Fiscal Year: 2013
    ..Public Health Relevance: Despite many significant oil spills in recent decades in regions of high population density including Europe, North Africa, and the Gulf of Mexico, published studies on consequences for human health ..
  35. ENVIRONMENTAL ASBESTOS AND MESOTHELIOMA IN CALIFORNIA
    Marc Schenker; Fiscal Year: 2001
    ..be combined with measures of human interaction with environmental asbestos, such as development, mining, and population density, to determine potential human exposure to environmental asbestos by county...
  36. Salmonella in pets in GA
    Susan Sanchez; Fiscal Year: 2012
    ..differs from state to state and in state. These differences cannot be explained entirely by differences in population density, cultural/ethnic customs, or food-distribution networks...
  37. New Statistical Methods to Handle Spatial Uncertainty in Cancer Risk Estimation
    Xiaomei Ma; Fiscal Year: 2013
    ..admits a flexible semiparametric form and hence removes potentially restrictive assumptions such as the population density being constant over small geographic areas, and 3) they explicitly account for spatial correlation in the ..
  38. RELATION BETWEEN SPACE AND AGGRESSION IN RHESUS MACAQUES
    Frans De Waal; Fiscal Year: 1992
    ..temple monkeys in Kathmandu, monkeys in a large corral, and caged monkeys with a relatively high population density yields and average rate of between 1.6 and 2.2 aggressive acts performed per adult female per hour...
  39. ADDRESSING EMERGING INFECTIOUS DISEASES IN BANGLADESH
    SARA LATRIELLE; Fiscal Year: 2013
    Bangladesh is a high risk country for emerging infectious diseases because of its high population density and poverty. Emerging Infectious diseases like influenza, HIV and SARS can threaten all people throughout the world. The U.S...
  40. Biodiversity, Habitat Fragmentation, & Lyme Disease Risk
    RICHARD OSTFELD; Fiscal Year: 2006
    ..Other published research suggests that species diversity of vertebrate's decreases, and population density of mice increases, with decreasing forest patch size...
  41. Validation of geographic masking techniques for location privacy protection
    PAUL ADRIANUS ZANDBERGEN; Fiscal Year: 2012
    ..how the degree of privacy protection of each geographic masking technique varies with masking parameters, population density and the amount of supplementary information provided;3) determine how robust the degree of privacy ..
  42. Determinants of RNA virus evolution
    ISABEL NOVELLA; Fiscal Year: 2009
    ..basis of differences in adaptability;(ii) the effect of two environmental determinants, population size and population density, on the speed of evolution and the maintenance of variation;and (iii) the consequences of interactions ..
  43. QUORUM SENSING IN HUMAN CELLS
    BRUCE DOLNICK; Fiscal Year: 2002
    ..Identification of other cell population density regulated genes. 2) Examine the relation of rTSbeta over-expression to Met metabolism...
  44. QUORUM SENSING IN HUMAN CELLS
    BRUCE DOLNICK; Fiscal Year: 2003
    ..Identification of other cell population density regulated genes. 2) Examine the relation of rTSbeta over-expression to Met metabolism...
  45. EPIDEMIOLOGY OF CHILD PSYCHOPATHOLOGY IN RURAL MAINE
    GWENDOLYN ZAHNER; Fiscal Year: 2001
    ..survey of 1,697 parents will also be used in analyses to explore hypotheses concerning the influence of population density and urbanization upon service use and psychopathology...
  46. Translating Science into Policy: A Survey of State Tobacco Control Plans
    Jennifer Ibrahim; Fiscal Year: 2009
    ..existing tobacco-related policies, and funding for tobacco control, as well as state demographics including population density, economic indicators, and partisanship...
  47. PHARMACOLOGIC MODIFICATION OF AFFERENT INPUT
    MURRAY MATTHEWS; Fiscal Year: 1980
    ..Cell population density and individual ultrastructural patterns will be measured, analyzed and related to induced alterations in ..
  48. Mechanism of Peptide Signaling in Bacillus Subtilis
    BETH LAZAZZERA; Fiscal Year: 2006
    ..Peptide signals, like CSF, are used by Gram-positive bacteria to monitor their population density (i.e. quorum sensing)...
  49. Emerging Foci of La Crosse Encephalitis Virus Activity
    SALLY PAULSON; Fiscal Year: 2006
    ..acting to increase the risk of human exposure to LAC virus by bringing it into suburban areas with greater population density. The roles of Oc. canadensis, a known accessory vector of LAC in some areas, and Oc...
  50. CANCER AND LEUKEMIA GROUP B
    William Sikov; Fiscal Year: 2002
    ..An additional hospital and three more investigators are being added this summer. Rhode Island offers high population density concentrated in a small geographic area (only 1045 square miles with a population of 1,003,464 and a ..
  51. SMALL-GROUP SOCIAL-COGNITIVE APPROACH TO HIV PREVENTION
    Edward Maibach; Fiscal Year: 1991
    ..The STD clinic populations were identified by stratifying the state's 159 counties on the basis of population density (urban vs. rural), ethnic composition (predominantly white vs. predominantly black), and STD rate (high vs...
  52. BASEMENT MEMBRANE ZONE IN VOCAL INJURY
    Steven Gray; Fiscal Year: 1993
    ..Through electorn microscopy, morphometric studies will be performed to determine the population density of the attaching BMZ structures in normal human and canine vocal cords...
  53. Natural and Synthetic Small-Molecule Modulators of Dauer Development in Nematodes
    REBECCA BUTCHER; Fiscal Year: 2009
    ..is constitutively secreted into the environment by the nematode, and thus enables the nematode to sense its population density. Dauer pheromone and food signal are thought to modulate the TGFP and insulin/IGF-1 pathways, which regulate ..
  54. Expanding Internet Access: Technology Learning Center
    JEAN SLEPIAN; Fiscal Year: 2002
    ..members of the medical staff and serves approximately 34,200 people over an area of 352 square miles, with a population density of 97 people per square mile. MCH is requesting funds in the amount of $9,962...
  55. A Dynamic Multilevel Analysis of Substance Use and HIV
    Katharine Poundstone; Fiscal Year: 2004
    ..g., concentrated disadvantage, residential instability, population density, mixed land use) increase the risk of HIV transmission; 2) Formal social regulation (e.g...
  56. HUMAN POPULATION GROWTH IMPACT ON S. HAEMATOBIUM
    Charles King; Fiscal Year: 2005
    ..It appears that wide variability in human water use and contamination and seasonal variability in snail population density serve to perpetuate S. haematobium transmission under marginal conditions...
  57. DEVELOPMENT OF MATURE ZEBRAFISH AS AN ANIMAL MODEL
    Evan Keller; Fiscal Year: 2006
    ..Additionally, the effect of population density on lifespan will be evaluated. 2) Create an atlas of anatomy and age-associated histopathology of zebrafish...
  58. Intra- and inter species cell-cell communication in Vibrio cholerae
    Wai Leung Ng; Fiscal Year: 2009
    ..molecules called autoinducers, to regulate virulence gene expression in response to changes in cell-population density and species complexity. Two V...
  59. BRAIN NEOPLASMS, LEUKEMIA & PETROCHEMAL EXPOSURES
    David Christiani; Fiscal Year: 2004
    ..These facilities are proximal to residential areas because of the high population density in the region...
  60. Validation of rTS as a Molecular Target
    BRUCE DOLNICK; Fiscal Year: 2002
    ..of the rTS gene is linked to slowed growth of cells and diminished TS levels as a function of cell population density. Human colon tumor cells (H630-1) that overproduce rTS secrete a molecule that can down-regulate TS in other ..
  61. REGULATION OF PENTOSE METABOLISM IN LIVER CELLS
    PHYLLIS HOFF; Fiscal Year: 1980
    ..The influence of cell cycle, population density and carbon source on the levels of these enzymes will be examined...
  62. Florida Hurricanes & Older Adults: Outcome/Resiliency
    Ronald Acierno; Fiscal Year: 2006
    ..Specifically, older adults resided in the areas most severely affected by the hurricanes at population density levels approximately twice that of the average US county...