Climate change and the molecular ecology of arctic marine mammals
Key to predicting likely consequences of future climate change for Arctic marine mammals is developing a detailed understanding of how these species use their environment today and how they were affected by past climate-induced environmental change. Genetic analyses are uniquely placed to address th...
| Published in: | Ecological Applications |
|---|---|
| Main Author: | |
| Format: | Text |
| Language: | English |
| Published: |
The Ecological Society of America
|
| Subjects: | |
| Online Access: | http://purl.flvc.org/FCLA/DT/1055929 https://doi.org/10.1890/06-0795.1 https://fau.digital.flvc.org/islandora/object/fau%3A5451/datastream/TN/view/Climate%20change%20and%20the%20molecular%20ecology%20of%20arctic%20marine%20mammals.jpg |
| Summary: | Key to predicting likely consequences of future climate change for Arctic marine mammals is developing a detailed understanding of how these species use their environment today and how they were affected by past climate-induced environmental change. Genetic analyses are uniquely placed to address these types of questions. Molecular genetic approaches are being used to determine distribution and migration patterns, dispersal and breeding behavior, population structure and abundance over time, and the effects of past and present climate change in Arctic marine mammals. A review of published studies revealed that population subdivision, dispersal, and gene flow in Arctic marine mammals was shaped primarily by evolutionary history, geography, sea ice, and philopatry to predictable, seasonally available resources. A meta-analysis of data from 38 study units across seven species found significant relationships between neutral genetic diversity and population size and climate region, revealing that small, isolated subarctic populations tend to harbor lower diversity than larger Arctic populations. A few small populations had substantially lower diversity than others. By contrast, other small populations retain substantial neutral diversity despite extensive population declines in the 19th and 20th centuries. The evolutionary and contemporary perspectives gained from these studies can be used to model the consequences of different climate projections for individual behavior and population structure and ultimately individual fitness and population viability. Copyright by the Ecological Society of America and available at http://esapubs.org/ This article may be cited as O’Curry‐Crowe, Gregory. (2008) Climate change and the molecular ecology of arctic marine mammals. Ecological Applications, 18(2) S56‐S76. Florida Atlantic University. Harbor Branch Oceanographic Institute contribution #1792. |
|---|