S L Chown

Summary

Affiliation: University of Stellenbosch
Country: South Africa

Publications

  1. ncbi Body size variation in insects: a macroecological perspective
    Steven L Chown
    Centre for Invasion Biology, Department of Botany and Zoology, Stellenbosch University, Private Bag X1, Matieland 7602, South Africa
    Biol Rev Camb Philos Soc 85:139-69. 2010
  2. ncbi Trait-based approaches to conservation physiology: forecasting environmental change risks from the bottom up
    Steven L Chown
    Centre for Invasion Biology, Department of Botany and Zoology, Stellenbosch University, Private Bag X1, Matieland 7602, South Africa
    Philos Trans R Soc Lond B Biol Sci 367:1615-27. 2012
  3. ncbi Continent-wide risk assessment for the establishment of nonindigenous species in Antarctica
    Steven L Chown
    Centre for Invasion Biology, Department of Botany and Zoology, Stellenbosch University, Matieland 7602, South Africa
    Proc Natl Acad Sci U S A 109:4938-43. 2012
  4. ncbi Antarctic marine biodiversity and deep-sea hydrothermal vents
    Steven L Chown
    Centre for Invasion Biology, Stellenbosch University, Stellenbosch, South Africa
    PLoS Biol 10:e1001232. 2012
  5. ncbi Rapid responses to high temperature and desiccation but not to low temperature in the freeze tolerant sub-Antarctic caterpillar Pringleophaga marioni (Lepidoptera, Tineidae)
    Brent J Sinclair
    Spatial, Physiological and Conservation Ecology Group, Department of Zoology, University of Stellenbosch, Private Bag X1, Matieland 7002, South Africa
    J Insect Physiol 49:45-52. 2003
  6. ncbi Hemispheric asymmetries in biodiversity--a serious matter for ecology
    Steven L Chown
    Centre for Invasion Biology and Department of Botany and Zoology, University of Stellenbosch, Stellenbosch, South Africa
    PLoS Biol 2:e406. 2004
  7. ncbi Gas exchange characteristics, metabolic rate and water loss of the Heelwalker, Karoophasma biedouwensis (Mantophasmatodea: Austrophasmatidae)
    S L Chown
    DST NRF Centre for Invasion Biology, Department of Botany and Zoology, University of Stellenbosch, Private Bag X1, Matieland 7602, South Africa
    J Insect Physiol 52:442-9. 2006
  8. ncbi Linking molecular physiology to ecological realities
    Steven L Chown
    Centre for Invasion Biology, Department of Botany and Zoology, University of Stellenbosch, Private Bag X1, Matieland 7602, South Africa
    Physiol Biochem Zool 79:314-23. 2006
  9. ncbi Spatial and temporal variability across life's hierarchies in the terrestrial Antarctic
    Steven L Chown
    Centre for Invasion Biology, Department of Botany and Zoology, Stellenbosch University, Private Bag X1, Matieland, South Africa
    Philos Trans R Soc Lond B Biol Sci 362:2307-31. 2007
  10. ncbi Macrophysiology for a changing world
    Steven L Chown
    Centre for Invasion Biology, Department of Botany and Zoology, Stellenbosch University, Private Bag X1, Matieland 7602, Republic of South Africa
    Proc Biol Sci 275:1469-78. 2008

Detail Information

Publications73

  1. ncbi Body size variation in insects: a macroecological perspective
    Steven L Chown
    Centre for Invasion Biology, Department of Botany and Zoology, Stellenbosch University, Private Bag X1, Matieland 7602, South Africa
    Biol Rev Camb Philos Soc 85:139-69. 2010
    ..Finally, areas particularly in need of additional research are identified...
  2. ncbi Trait-based approaches to conservation physiology: forecasting environmental change risks from the bottom up
    Steven L Chown
    Centre for Invasion Biology, Department of Botany and Zoology, Stellenbosch University, Private Bag X1, Matieland 7602, South Africa
    Philos Trans R Soc Lond B Biol Sci 367:1615-27. 2012
    ....
  3. ncbi Continent-wide risk assessment for the establishment of nonindigenous species in Antarctica
    Steven L Chown
    Centre for Invasion Biology, Department of Botany and Zoology, Stellenbosch University, Matieland 7602, South Africa
    Proc Natl Acad Sci U S A 109:4938-43. 2012
    ....
  4. ncbi Antarctic marine biodiversity and deep-sea hydrothermal vents
    Steven L Chown
    Centre for Invasion Biology, Stellenbosch University, Stellenbosch, South Africa
    PLoS Biol 10:e1001232. 2012
    ..Other deep-sea hydrothermal vents located in international waters are not protected and may be threatened by growing interests in deep-sea mining...
  5. ncbi Rapid responses to high temperature and desiccation but not to low temperature in the freeze tolerant sub-Antarctic caterpillar Pringleophaga marioni (Lepidoptera, Tineidae)
    Brent J Sinclair
    Spatial, Physiological and Conservation Ecology Group, Department of Zoology, University of Stellenbosch, Private Bag X1, Matieland 7002, South Africa
    J Insect Physiol 49:45-52. 2003
    ..marioni must always be physiologically prepared to survive cold snaps, and that this year-round cold hardiness therefore supersedes a rapid cold hardening response...
  6. ncbi Hemispheric asymmetries in biodiversity--a serious matter for ecology
    Steven L Chown
    Centre for Invasion Biology and Department of Botany and Zoology, University of Stellenbosch, Stellenbosch, South Africa
    PLoS Biol 2:e406. 2004
  7. ncbi Gas exchange characteristics, metabolic rate and water loss of the Heelwalker, Karoophasma biedouwensis (Mantophasmatodea: Austrophasmatidae)
    S L Chown
    DST NRF Centre for Invasion Biology, Department of Botany and Zoology, University of Stellenbosch, Private Bag X1, Matieland 7602, South Africa
    J Insect Physiol 52:442-9. 2006
    ..Both total water loss rate and estimated cuticular water loss rate were significantly repeatable, with intraclass correlation coefficients of 0.745 and 0.553, respectively...
  8. ncbi Linking molecular physiology to ecological realities
    Steven L Chown
    Centre for Invasion Biology, Department of Botany and Zoology, University of Stellenbosch, Private Bag X1, Matieland 7602, South Africa
    Physiol Biochem Zool 79:314-23. 2006
    ..Mostly, this is a consequence of the differing approaches and "languages" adopted by these fields. We discuss approaches by which the prospects for synthetic work might be improved...
  9. ncbi Spatial and temporal variability across life's hierarchies in the terrestrial Antarctic
    Steven L Chown
    Centre for Invasion Biology, Department of Botany and Zoology, Stellenbosch University, Private Bag X1, Matieland, South Africa
    Philos Trans R Soc Lond B Biol Sci 362:2307-31. 2007
    ..Moreover, little of the available information is being integrated into terrestrial conservation planning, which lags far behind in this region by comparison with most others...
  10. ncbi Macrophysiology for a changing world
    Steven L Chown
    Centre for Invasion Biology, Department of Botany and Zoology, Stellenbosch University, Private Bag X1, Matieland 7602, Republic of South Africa
    Proc Biol Sci 275:1469-78. 2008
    ..In so doing we demonstrate that environmental physiologists have much to offer the scientific quest to resolve major environmental problems...
  11. ncbi Water loss in insects: an environmental change perspective
    Steven L Chown
    Centre for Invasion Biology, Department of Botany and Zoology, Stellenbosch University, Private Bag X1, Matieland 7602, South Africa
    J Insect Physiol 57:1070-84. 2011
    ....
  12. ncbi Respiratory water loss in insects
    S L Chown
    Department of Zoology, University of Stellenbosch, Private Bag X1, Matieland 7602, South Africa
    Comp Biochem Physiol A Mol Integr Physiol 133:791-804. 2002
    ..Moreover, in the case of the DGC it should be recognized that several factors are likely to influence this gas exchange pattern, and that they probably act in concert, especially during dormancy...
  13. ncbi Physiological variation in insects: large-scale patterns and their implications
    S L Chown
    Department of Zoology and Entomology, University of Pretoria, 0002, Pretoria, South Africa
    Comp Biochem Physiol B Biochem Mol Biol 131:587-602. 2002
    ..In short, although large-scale comparative physiology can contribute considerable understanding to both physiology and ecology, there is much that remains to be done...
  14. ncbi Phenotypic plasticity mediates climate change responses among invasive and indigenous arthropods
    Steven L Chown
    Department of Botany and Zoology, Stellenbosch Univerisity, Matieland, Republic of South Africa
    Proc Biol Sci 274:2531-7. 2007
    ....
  15. ncbi Physiological variation and phenotypic plasticity: a response to 'Plasticity in arthropod cryotypes' by Hawes and Bale
    S L Chown
    Department of Botany and Zoology, Stellenbosch University, Matieland 7602, South Africa
    J Exp Biol 211:3353-7. 2008
    ....
  16. ncbi Upper thermal tolerance and oxygen limitation in terrestrial arthropods
    C Jaco Klok
    Spatial, Physiological and Conservation Ecology Group, Department of Zoology, University of Stellenbosch, Private Bag X1, Matieland 7602, South Africa
    J Exp Biol 207:2361-70. 2004
    ..Because insects dominate terrestrial systems, oxygen limitation of thermal tolerance cannot be considered pervasive in this habitat, although it is a characteristic of marine species...
  17. ncbi Deleterious effects of repeated cold exposure in a freeze-tolerant sub-Antarctic caterpillar
    Brent J Sinclair
    Spatial, Physiological and Conservation Ecology Group, Department of Botany and Zoology, Stellenbosch University, Private Bag X1, Matieland 7602, South Africa
    J Exp Biol 208:869-79. 2005
    ..marioni. Coupled with increased predation from introduced house mice on Marion Island, this could have severe consequences for the P. marioni population...
  18. ncbi Discontinuous gas-exchange cycles in Scarabaeus dung beetles (Coleoptera: Scarabaeidae): mass-scaling and temperature dependence
    A L Davis
    Department of Zoology and Entomology, University of Pretoria, Pretoria, 0002 South Africa
    Physiol Biochem Zool 72:555-65. 1999
    ..We suggest that proportions be used to estimate the contribution of each of the phases to the total duration of the DGC...
  19. ncbi Temperature- and body mass-related variation in cyclic gas exchange characteristics and metabolic rate of seven weevil species: Broader implications
    C J Klok
    Department of Botany and Zoology, DST Centre of Excellence for Invasion Biology, Stellenbosch University, Private Bag X1, Matieland 7602, South Africa
    J Insect Physiol 51:789-801. 2005
    ..These findings are discussed in the context of the emerging macrophysiological metabolic theory of ecology...
  20. ncbi Cold tolerance of Littorinidae from southern Africa: intertidal snails are not constrained to freeze tolerance
    Brent J Sinclair
    Spatial, Physiological and Conservation Ecology, Department of Botany and Zoology, University of Stellenbosch, Private Bag X1, 7602 Matieland, South Africa
    J Comp Physiol B 174:617-24. 2004
    ..Echinolittorina natalensis and A. africana both showed pre-freeze mortality and survival of some internal ice formation, but were not cold hardy in any strict sense...
  21. ncbi Metabolism of the sub-Antarctic caterpillar Pringleophaga marioni during cooling, freezing and thawing
    Brent J Sinclair
    Spatial, Physiological and Conservation Ecology Group, Department of Zoology, University of Stellenbosch, Private Bag X1, Matieland 7602, South Africa
    J Exp Biol 207:1287-94. 2004
    ....
  22. ncbi Variation in scorpion metabolic rate and rate-temperature relationships: implications for the fundamental equation of the metabolic theory of ecology
    J S Terblanche
    Centre for Invasion Biology, Department of Botany and Zoology, University of Stellenbosch, Stellenbosch, South Africa
    J Evol Biol 20:1602-12. 2007
    ....
  23. ncbi Acclimation effects on thermal tolerances of springtails from sub-Antarctic Marion Island: indigenous and invasive species
    Sarette Slabber
    Centre for Invasion Biology, Department of Botany and Zoology, Stellenbosch University, South Africa
    J Insect Physiol 53:113-25. 2007
    ..Moreover, manipulative field experiments have shown abundance changes in the indigenous and invasive springtail species in the direction predicted by the physiological data...
  24. ncbi Environmental physiology of three species of Collembola at Cape Hallett, North Victoria Land, Antarctica
    Brent J Sinclair
    Spatial, Physiological and Conservation Ecology, Department of Botany and Zoology, University of Stellenbosch, South Africa
    J Insect Physiol 52:29-50. 2006
    ..cisantarcticus at Cape Hallett. Together, these data significantly increase the current knowledge of the environmental physiology of Antarctic Collembola...
  25. ncbi Insect rate-temperature relationships: environmental variation and the metabolic theory of ecology
    Ulrike M Irlich
    Centre for Invasion Biology, Department of Botany and Zoology, Stellenbosch University, Private Bag X1, Matieland 7602, South Africa
    Am Nat 174:819-35. 2009
    ..In consequence, we consider alternative explanations for variation in rate-temperature relationships...
  26. ncbi Water-balance characteristics respond to changes in body size in subantarctic weevils
    Steven L Chown
    Spatial, Physiological, and Conservation Ecology Group, Department of Zoology, University of Stellenbosch, Private Bag X1, Matieland 7602, South Africa
    Physiol Biochem Zool 76:634-43. 2003
    ..Future laboratory selection experiments might usefully explore both directions of water-balance evolution...
  27. ncbi Phenotypic plasticity of thermal tolerances in five oribatid mite species from sub-Antarctic Marion Island
    Jacques A Deere
    Centre for Invasion Biology, Department of Botany and Zoology, Stellenbosch University, Private Bag X1, Matieland 7602, South Africa
    J Insect Physiol 52:693-700. 2006
    ..These findings demonstrate that acclimation responses vary among traits in the same species. Moreover, they suggest that there is merit in assessing the predictability of changes in high and low environmental temperatures separately...
  28. ncbi Discontinuous gas exchange cycles in aphodius fossor (Scarabaeidae): a test of hypotheses concerning origins and mechanisms
    S L Chown
    Department of Zoology and Entomology, University of Pretoria, Pretoria 0001, South Africa
    J Exp Biol 203:397-403. 2000
    ..fossor under hypoxic conditions, we conclude that current adaptive explanations for the DGC are inadequate. Rather, the DGC may be the default state of a system regulated by two interacting feedback loops when demands are absent...
  29. ncbi Investigating onychophoran gas exchange and water balance as a means to inform current controversies in arthropod physiology
    Susana Clusella-Trullas
    Centre for Invasion Biology, Department of Botany and Zoology, Stellenbosch University, Private Bag X1, Matieland 7602, South Africa
    J Exp Biol 211:3139-46. 2008
    ..Curling behaviour in P. capensis appears to be a strategy to lower energetic costs when resting, and the concomitant depression of water loss is a proximate consequence of this behaviour...
  30. ncbi Critical thermal limits depend on methodological context
    John S Terblanche
    Centre for Invasion Biology, Department of Botany and Zoology, Stellenbosch University, Private Bag X1, Matieland 7602, Republic of South Africa
    Proc Biol Sci 274:2935-42. 2007
    ..These effects are explained by limited plasticity of CTLs in this species over short time scales. The results of the present study have broad implications for understanding temperature tolerance in these and other terrestrial arthropods...
  31. ncbi Scaling of gas exchange cycle frequency in insects
    John S Terblanche
    Centre for Invasion Biology, Stellenbosch University, Private Bag X1, Matieland 7602, Republic of South Africa
    Biol Lett 4:127-9. 2008
    ..Insects therefore appear no different from other animals insofar as the scaling of gas exchange fC is concerned, although gas exchange fC may scale in distinct ways for different patterns...
  32. ncbi Phenotypic plasticity of gas exchange pattern and water loss in Scarabaeus spretus (Coleoptera: Scarabaeidae): deconstructing the basis for metabolic rate variation
    John S Terblanche
    Department of Conservation Ecology and Entomology, Faculty of AgriSciences, Stellenbosch University, Private Bag X1, Matieland 7602, South Africa
    J Exp Biol 213:2940-9. 2010
    ..These results are significant for understanding the evolution of gas exchange patterns and trade-offs between metabolic rate and water balance in insects and other terrestrial arthropods...
  33. ncbi Beneficial acclimation and the Bogert effect
    Elrike Marais
    Centre for Invasion Biology, Department of Botany and Zoology, Stellenbosch University, Private Bag X1, Matieland, 7602 Stellenbosch, South Africa
    Ecol Lett 11:1027-36. 2008
    ....
  34. ncbi Thermal tolerance in a south-east African population of the tsetse fly Glossina pallidipes (Diptera, Glossinidae): implications for forecasting climate change impacts
    John S Terblanche
    Centre for Invasion Biology, Department of Botany and Zoology, Stellenbosch University, Private Bag X1, Matieland 7602, South Africa
    J Insect Physiol 54:114-27. 2008
    ....
  35. ncbi Directional evolution of the slope of the metabolic rate-temperature relationship is correlated with climate
    John S Terblanche
    Department of Conservation Ecology and Entomology, Stellenbosch University, Private Bag X1, Matieland 7602, South Africa
    Physiol Biochem Zool 82:495-503. 2009
    ..These results therefore suggest evolutionary adaptation of MR-T reaction norms to cool climates (<22 degrees C) in tsetse and provide novel support for MCA within an insect species...
  36. ncbi Effects of flow rate and temperature on cyclic gas exchange in tsetse flies (Diptera, Glossinidae)
    John S Terblanche
    Department of Conservation Ecology and Entomology, Faculty of AgriSciences, Stellenbosch University, Private Bag X1, Matieland 7602, South Africa
    J Insect Physiol 56:513-21. 2010
    ..This is unusual among insects showing CGE or DGE patterns because increases in metabolic rate are usually modulated by increases in frequency, but either no change or a decline in burst volume...
  37. ncbi Phenotypic plasticity of locomotion performance in the seed harvester Messor capensis (Formicidae)
    Susana Clusella-Trullas
    Centre for Invasion Biology, Department of Botany and Zoology, Stellenbosch University, Private Bag X1, Matieland 7602, South Africa
    Physiol Biochem Zool 83:519-30. 2010
    ..This study emphasizes the need to investigate a variety of performance traits rather than a single one and to expand the limited body of work on plasticity of insect locomotion...
  38. ncbi Diurnal variation in supercooling points of three species of Collembola from Cape Hallett, Antarctica
    Brent J Sinclair
    Spatial, Physiological and Conservation Ecology Group, Department of Zoology, University of Stellenbosch, Private Bag X1, Matieland 7602, South Africa
    J Insect Physiol 49:1049-61. 2003
    ..klovstadi's short-term survival of nighttime temperatures. These data suggest that the full range of thermal responses of Antarctic Collembola is yet to be elucidated...
  39. ncbi Extrapolating population size from the occupancy-abundance relationship and the scaling pattern of occupancy
    Cang Hui
    Centre for Invasion Biology, Department of Botany and Zoology, University of Stellenbosch, Private Bag X1, Matieland 7602, South Africa
    Ecol Appl 19:2038-48. 2009
    ..Therefore, SPO models are recommended for assemblage-scale regional abundance estimation based on spatially explicit presence-absence data...
  40. ncbi Life stage-related differences in hardening and acclimation of thermal tolerance traits in the kelp fly, Paractora dreuxi (Diptera, Helcomyzidae)
    Elrike Marais
    Centre for Invasion Biology, Department of Botany and Zoology, Stellenbosch University, Private Bag X1, Matieland 7602, Stellenbosch, South Africa
    J Insect Physiol 55:336-43. 2009
    ..This study further demonstrates the complexities of thermal tolerance responses in P. dreuxi...
  41. ncbi Breaching the dispersal barrier to invasion: quantification and management
    Jennifer E Lee
    Centre for Invasion Biology, Department of Botany and Zoology, Stellenbosch University, Private Bag X1, Matieland 7602, South Africa
    Ecol Appl 19:1944-59. 2009
    ..Several relatively simple changes in biosecurity policy that could significantly reduce the threat of introduction of nonnative species are suggested...
  42. ncbi Physiological tolerances account for range limits and abundance structure in an invasive slug
    Jennifer E Lee
    Centre for Invasion Biology, Department of Botany and Zoology, Stellenbosch University, Private Bag X1, Matieland 7602, Republic of South Africa
    Proc Biol Sci 276:1459-68. 2009
    ..This is probably associated with an altitudinal decline in mean annual soil temperature. These findings support previous predictions made regarding the form of density change when substrate or climatic factors set range limits...
  43. ncbi Control of discontinuous gas exchange in Samia cynthia: effects of atmospheric oxygen, carbon dioxide and moisture
    John S Terblanche
    Centre for Invasion Biology, Department of Botany and Zoology, Faculty of Science, Stellenbosch University, Matieland, South Africa
    J Exp Biol 211:3272-80. 2008
    ..Further investigation is required using a strong-inference, experimental approach across a range of species from different habitats to determine how widespread the support for the oxidative damage hypothesis might be...
  44. ncbi Discontinuous gas-exchange in centipedes and its convergent evolution in tracheated arthropods
    C Jaco Klok
    Department of Zoology, University of Stellenbosch, Private Bag X1, Matieland 7602, South Africa
    J Exp Biol 205:1019-29. 2002
    ..Spiracular closure and discontinuous gas-exchange cycles are probably more widespread in arthropods than has previously been suspected...
  45. ncbi Insect gas exchange patterns: a phylogenetic perspective
    Elrike Marais
    Spatial, Physiological and Conservation Ecology Group, Department of Botany and Zoology, Stellenbosch University, Private Bag X1, Matieland 7602, South Africa
    J Exp Biol 208:4495-507. 2005
    ....
  46. ncbi The relative contributions of developmental plasticity and adult acclimation to physiological variation in the tsetse fly, Glossina pallidipes (Diptera, Glossinidae)
    John S Terblanche
    Spatial, Physiological and Conservation Ecology Group, Department of Botany and Zoology, University of Stellenbosch, Private Bag X1, Matieland, 7602, Stellenbosch, South Africa
    J Exp Biol 209:1064-73. 2006
    ..pallidipes, and therefore that it is not only important to consider the form of plasticity but also the direction of the response and its significance from a life-history perspective...
  47. ncbi The effects of acclimation on thermal tolerance, desiccation resistance and metabolic rate in Chirodica chalcoptera (Coleoptera: Chrysomelidae)
    John S Terblanche
    Spatial, Physiological, and Conservation Ecology Group, Department of Botany and Zoology, Stellenbosch University, Private Bag X1, Matieland, 7602, South Africa
    J Insect Physiol 51:1013-23. 2005
    ..We place these data in the context of measured inflorescence and ambient temperatures, and predict that climate change for the region could have effects on this species, in turn possibly affecting local ecosystem functioning...
  48. ncbi Phenotypic plasticity and geographic variation in thermal tolerance and water loss of the tsetse Glossina pallidipes (Diptera: Glossinidae): implications for distribution modelling
    John S Terblanche
    Centre for Invasion Biology, Department of Botany and Zoology, Stellenbosch University, Stellenbosch, South Africa
    Am J Trop Med Hyg 74:786-94. 2006
    ..Limited variation in CT(Max) supports bioclimatic models that suggest tsetse are likely to show range contraction with warming from climate change...
  49. ncbi Temperature-dependence of metabolic rate in Glossina morsitans morsitans (Diptera, Glossinidae) does not vary with gender, age, feeding, pregnancy or acclimation
    John S Terblanche
    Spatial, Physiological and Conservation Ecology Group, Department of Botany and Zoology, University of Stellenbosch, Private Bag X1, Matieland, 7602 Stellenbosch, South Africa
    J Insect Physiol 51:861-70. 2005
    ..These findings have implications for predicting the metabolic responses of tsetse flies to short-term temperature variation and may also have applications for modelling tsetse population dynamics as a function of temperature...
  50. ncbi Testing the beneficial acclimation hypothesis and its alternatives for locomotor performance
    Jacques A Deere
    Centre for Invasion Biology, Department of Botany and Zoology, Stellenbosch University, Private Bag X1, Matieland 7602, South Africa
    Am Nat 168:630-44. 2006
    ..However, weak plasticity in the upper-shore/marine species and the absence of plasticity in the terrestrial species might also be a consequence of phylogenetic constraint...
  51. ncbi Caterpillars benefit from thermal ecosystem engineering by wandering albatrosses on sub-Antarctic Marion Island
    Brent J Sinclair
    Spatial, Physiological and Conservation Ecology Group and Centre for Invasion Biology, Department of Botany and Zoology, University of Stellenbosch, Stellenbosch, South Africa
    Biol Lett 2:51-4. 2006
    ..marioni. Thus, wandering albatrosses may be serving as thermal engineers, modifying temperature and therefore enabling better resource use by P. marioni...
  52. ncbi Metabolic rate in the whip-spider, Damon annulatipes (Arachnida: Amblypygi)
    John S Terblanche
    Spatial, Physiological and Conservation Ecology Group, Department of Zoology, University of Stellenbosch, Private Bag X1, Matieland, Stellenbosch 7602, South Africa
    J Insect Physiol 50:637-45. 2004
    ..These findings have implications for the understanding of the evolution of metabolic rates in arthropods...
  53. ncbi Discontinuous gas exchange and the significance of respiratory water loss in Scarabaeine beetles
    Steven L Chown
    Department of Zoology, University of Stellenbosch, Private Bag X1, Matieland 7602, South
    J Exp Biol 206:3547-56. 2003
    ..Our results provide direct evidence that respiratory water loss forms a significant component of water balance, and that changes in both metabolic rate and DGC characteristics contribute to modulation of respiratory water loss...
  54. ncbi A global indicator for biological invasion
    Melodie A McGeoch
    Centre for Invasion Biology, Department of Conservation Ecology and Entomology, University of Stellenbosch, Private Bay X1, Matieland 7602, South Africa
    Conserv Biol 20:1635-46. 2006
    ..Importantly, current indicator development initiatives will also contribute to developing the mechanisms necessary for monitoring global trends in IAS beyond 2010...
  55. ncbi Climatic variability and the evolution of insect freeze tolerance
    Brent J Sinclair
    Spatial, Physiological and Conservation Ecology Research Group, Department of Zoology, University of Stellenbosch, Private Bag X1, Matieland 7602, South Africa
    Biol Rev Camb Philos Soc 78:181-95. 2003
    ....
  56. ncbi Stage-related variation in rapid cold hardening as a test of the environmental predictability hypothesis
    John S Terblanche
    Centre for Invasion Biology, Department of Botany and Zoology, Stellenbosch University, Stellenbosch, South Africa
    J Insect Physiol 53:455-62. 2007
    ..These results show that further studies of RCH should take into account the way in which differences among life stages influence the interaction between phenotypic plasticity and environmental variability and predictability...
  57. ncbi Inertia in physiological traits: Embryonopsis halticella caterpillars (Yponomeutidae) across the Antarctic Polar Frontal Zone
    C J Klok
    Spatial, Physiological and Conservation Ecology Group, Department of Botany and Zoology, University of Stellenbosch, Private Bag X1, Matieland 7602, South Africa
    J Insect Physiol 51:87-97. 2005
    ..Lack of adaptive geographic variation in physiological traits has consequences for models of range limits, and highlights the importance of exploring phenotypic plasticity as a response to climatic variation...
  58. ncbi Metabolic rate variation in Glossina pallidipes (Diptera: Glossinidae): gender, ageing and repeatability
    J S Terblanche
    Spatial, Physiological and Conservation Ecology Group, Department of Zoology, University of Stellenbosch, Private Bag X1, Matieland, Stellenbosch 7602, South Africa
    J Insect Physiol 50:419-28. 2004
    ..Tsetse and other flies generally have a much higher metabolic rate, for a given size, than do other insect species investigated to date...
  59. ncbi Mite dispersal among the Southern Ocean Islands and Antarctica before the last glacial maximum
    E Mortimer
    Stellenbosch University, Matieland 7602, South Africa
    Proc Biol Sci 278:1247-55. 2011
    ..The present results provide additional impetus for a search for terrestrial refugia in an area previously thought to have lacked ice-free ground during glacial maxima...
  60. ncbi Discontinuous gas exchange in insects: a clarification of hypotheses and approaches
    Steven L Chown
    Spatial, Physiological, and Conservation Ecology Group, Department of Botany and Zoology, University of Stellenbosch, Private Bag X1, Matieland 7602, South Africa
    Physiol Biochem Zool 79:333-43. 2006
    ....
  61. ncbi Body size patterns in Drosophila inhabiting a mesocosm: interactive effects of spatial variation in temperature and abundance
    Marié Warren
    Department of Zoology and Entomology, University of Pretoria, Pretoria, 0002, South Africa
    Oecologia 149:245-55. 2006
    ..Under natural conditions both mortality and non-lethal effects of temperature and/or crowding are likely to play a role in the evolution of body size...
  62. ncbi Constraint and competition in assemblages: a cross-continental and modeling approach for ants
    Catherine L Parr
    Department of Zoology and Entomology, University of Pretoria, Pretoria 0002, South Africa
    Am Nat 165:481-94. 2005
    ..Our results draw attention to the significance of regional processes in structuring ant assemblages...
  63. ncbi Repeatability of standard metabolic rate and gas exchange characteristics in a highly variable cockroach, Perisphaeria sp
    Elrike Marais
    Spatial, Physiological and Conservation Ecology Group, Department of Zoology, University of Stellenbosch, Private Bag X1, Matieland 7602, South Africa
    J Exp Biol 206:4565-74. 2003
    ..Our results provide support for consistency of variation among individuals, which is one of the prerequisites of natural selection that is infrequently tested in insects...
  64. ncbi Bias, precision and accuracy in the estimation of cuticular and respiratory water loss: a case study from a highly variable cockroach, Perisphaeria sp
    Emilie M Gray
    Department of Botany and Zoology, Centre for Invasion Biology, Stellenbosch University, Private Bag X1, Matieland 7602, South Africa
    J Insect Physiol 54:169-79. 2008
    ....
  65. ncbi Acclimation effects on critical and lethal thermal limits of workers of the Argentine ant, Linepithema humile
    Keafon R Jumbam
    Centre for Invasion Biology, Department of Botany and Zoology, Stellenbosch University, Private Bag X1, Matieland 7602, South Africa
    J Insect Physiol 54:1008-14. 2008
    ....
  66. ncbi Oxygen limitation and thermal tolerance in two terrestrial arthropod species
    Meagan M Stevens
    Department of Botany and Zoology, Stellenbosch University, Private Bag X1, Matieland 7602, South Africa
    J Exp Biol 213:2209-18. 2010
    ..5% O(2)). In both species, CT(min) and CT(max) responded differently to oxygen limitation, suggesting that this is not a common mechanism coupling upper and lower limits in terrestrial arthropods...
  67. ncbi Rates of species introduction to a remote oceanic island
    Kevin J Gaston
    Biodiversity and Macroecology Group, Department of Animal and Plant Sciences, University of Sheffield, Sheffield S10 2TN, UK
    Proc Biol Sci 270:1091-8. 2003
    ....
  68. ncbi Biological invasions in the Antarctic: extent, impacts and implications
    Yves Frenot
    UMR 6553 CNRS Université de Rennes and French Polar Institute IPEV, Station Biologique, F 35380 Paimpont, France
    Biol Rev Camb Philos Soc 80:45-72. 2005
    ..Mitigation measures that will substantially reduce the risk of introductions to Antarctica and the sub-Antarctic must focus on reducing propagule loads on humans, and their food, cargo, and transport vessels...
  69. ncbi The mid-domain effect revisited
    Fernando A Zapata
    Department of Biology, Universidad de Valle, Apartado Aéreo 25360, Cali, Colombia
    Am Nat 166:E144-8; discussion E149-54. 2005
    ..Criticism of MDE model assumptions does not, however, imply opposition to the use of null models in ecology...
  70. ncbi Protected areas and regional avian species richness in South Africa
    Karl L Evans
    University of Sheffield, Biodiversity and Macroecology Group, Department of Animal and Plant Sciences, Sheffield S10 2TN, UK
    Biol Lett 2:184-8. 2006
    ..While the protected area network should be expanded, it is essential that conservation efforts also focus on maintaining biodiversity in the wider unprotected landscape that supports high species richness...
  71. ncbi Factory flies are not equal to wild flies
    John S Terblanche
    Science 317:1678. 2007
  72. ncbi Landscape corridors: possible dangers?
    Serban Procheş
    Science 310:779-83; author reply 779-83. 2005
  73. ncbi Evolutionary responses of discontinuous gas exchange in insects
    Craig R White
    Department of Environmental Biology, School of Earth and Environmental Sciences, University of Adelaide, Adelaide 5005, Australia
    Proc Natl Acad Sci U S A 104:8357-61. 2007
    ..This result supports the hygric hypothesis. We conclude that the DGCs of insects reduce respiratory water loss while ensuring adequate gas exchange...