Location of Repository

The role of landscape structure in determining eco-evolutionary dynamics during environmental change

By Gregory John McInerny

Abstract

Climate change may produce a variety of responses in populations' ecological and evolutionary dynamics. At opposing limits of populations' ranges, the responses are\ud expected to differ. Some lag in response may be expected due to the rapidity of climate change, with the strength and type of lags varying across space. Importantly\ud responses may contain both ecological and evolutionary components. This thesis provides significant contribution to understanding how structure in populations and\ud the landscape may determine the nature of populations' responses to climate and environmental changes.\ud \ud A number of models and a microcosm experiment are presented. The results show how alternate temporal and spatial population structures are developed when\ud individuals move in space. From defining percolation routes, patterns of gene flow or spatial selection, landscapes provide a large role in determining populations'\ud responses. Even without landscape structure, populations exhibit large levels of regional structure, and indeed substructure, due to localised interactions. This spatial\ud structure may deform during climate change, producing new characteristics of equilibrium spatial distributions. During range deformation the feedback between spatial structure and dynamics can alter populations' evolvability by changing the patterns and strength of intraspecific competition, or the maintenance of genetic variation. These changes produce dynamics that will be sensitive to individual differences in a population. Changes in populations' age and sex structure may modulate ecological and evolutionary interactions.\ud \ud The research presented here highlights an increased importance of understanding populations' spatio-temporal structure and dynamics within heterogeneous\ud landscapes. This is especially so as ecological and evolutionary processes can converge to different degrees during climate change, depending on the landscape a\ud population inhabits. Prediction of populations' responses may require a greater understanding of spatial processes and how range deformation affects the evolution of\ud different kinds of traits. All the above areas feed into a greater understanding of the genesis and maintenance of diversity in any situation

Publisher: Institute of Integrative and Comparative Biology (Leeds)
Year: 2008
OAI identifier: oai:etheses.whiterose.ac.uk:694

Suggested articles

Preview

Citations

  1. (2003). A globally coherent fingerprint of climate change impacts across natural systems. doi
  2. (2004). A method for simulating patterns of habitat availability at static and dynamic range margins. doi
  3. (2005). A northward shift of range margins in British Odonata. doi
  4. (2000). A survey and overview of habitat fragmentation experiments. doi
  5. (1996). An organism based perspective of habitat fragmentation. In:
  6. (1997). and the Plant Migration Group,
  7. (2004). Biochmate envelope models, what they detect and what they hide. doi
  8. (2004). Bioclimate envelope models, what they detect and what they hide - response to Hampe doi
  9. (2000). Biological consequences of global warming: is the signal already apparent? doi
  10. (1999). Birds extend their ranges northwards.
  11. (2004). Changes in dispersal during species' range expansions. doi
  12. (1975). Checkerspot butterflies: a historical perspective. doi
  13. (1996). Climate and species'range. doi
  14. (2003). Climate change and habitat destruction: a deadly anthropogenic cocktail. doi
  15. (1997). Climate change and vegetation. In: Crawley, doi
  16. (2001). Climate change. Third assessment report of the intergovernmental panel on climate change IPCC (WG I and 11). doi
  17. (1991). Climatic-change and the British butterfly fauna - opportunities and constraints. doi
  18. (2004). Comparative losses of British butterflies, birds, and plants and the global extinction crisis.
  19. (2001). Condition dependent dispersal. in:
  20. (1995). Critical thresholds in species' responses to landscape structure. doi
  21. (2002). Dispersal evolution during invasions. doi
  22. (1999). Dispersal success on fractal landscapes: a consequence of lacunarity thresholds.
  23. (2002). Effect of habitat fragmentation on the extinction threshold: a synthesis. doi
  24. (2003). Effects of habitat fragmentation on biodiversity. doi
  25. (2005). Evolution driven by differential dispersal within a wild bird population. doi
  26. (1999). Evolution of density-dependent dispersal. doi
  27. (2003). Evolutionary trade-offs between reproduction and dispersal in populations at expanding range boundaries. doi
  28. (2004). Extinction risk from climate change. doi
  29. (2003). Extinction threshold in metapopulation models. doi
  30. (1999). Extinction thresholds for species in fractal landscapes. doi
  31. (2005). Gene flow and maintains a large genetic difference in clutch size at a small spatial scale. doi
  32. (1996). Habitat fragmentation and extinction thresholds in spatially explicit models. doi
  33. (1999). Habitat fragmentation and extinction thresholds on fractal landscapes. doi
  34. (1996). Habitat persistence underlies intraspecific variation in the dispersal strategies of planthoppers. doi
  35. (2001). How much habitat is enough? doi
  36. (2000). Impacts of habitat fragmentation and patch size upon migration rates. doi
  37. (1997). Landscape connectivity and population distributions in heterogeneous environments. doi
  38. (2002). Patchy reaction-diffusion and population abundance: the relative importance of habitat amount and arrangement. doi
  39. (1994). Persistence in patchy irTegular landscapes. doi
  40. (1997). Physiology and ecology of dispersal polymorphism in insects. doi
  41. (2005). Planning for climate change: minimum- dispersal corridors for the cape Proteaceae. doi
  42. (1999). Poleward shifts in geographical ranges of butterfly species associated with regional warming. doi
  43. (2003). Predicting the impacts of climate change on the distribution of species: are bioclimate envelope models useful? doi
  44. R_ 1999. Intraspecific variation in habitat availability among ectothermic animals near their climatic limits and their centres of range. doi
  45. (2001). Range shifts and adaptive response to quaternary climate change. doi
  46. (1999). Selection-based biodiversity at a small spatial scale in a low-dispersing insular bird. doi
  47. (1969). Some demographic and genetic consequences of environmental heterogeneity for biological control.
  48. (1992). Spatial scale mediates the influence of habitat fragmentation on dispersal success: implications for conservation. Theoretical Population Biology doi
  49. (1994). The biogeography of scarce vascular plants in Britain with respect to habitat preference, dispersal ability and reproductive ability. doi
  50. (1995). The effect of habitat destruction pattern on species persistence, a cellular model. doi
  51. (2000). The genetic legacy of the quaternary ice ages.

To submit an update or takedown request for this paper, please submit an Update/Correction/Removal Request.