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| DISSERTATION RESEARCH: Community Level Response to Global Change: The Effect of Temperature on the Relative Importance of Top-Down and Bottom-Up Effects | |
| 项目编号 | 0608143 |
| Gary Belovsky | |
| 项目主持机构 | University of Notre Dame |
| 开始日期 | 2006-07-15 |
| 结束日期 | 2007-06-30 |
| 英文摘要 | This research examines how natural communities may respond to changing temperature. Food webs are pictorial representations of species interactions, specifically feeding relationships of who eats whom. Within food web theory, the effects of predators on their prey are known as top-down effects, while the effects of resources on consumers are known as bottom-up effects. Top-down and bottom-up effects strongly influence the abundance and diversity of species in natural communities. This research will address the question, what is the effect of temperature on the relative importance of top-down and bottom-up effects in a food web? This question will be addressed experimentally using the model aquatic community found within the leaves of pitcher plants. Predator and resource levels will be manipulated at a range of temperatures and the response of populations in the food web will be used to calculate the strength of top-down and bottom-up effects. Understanding of the structure and dynamics of food webs and the species interactions within them is of vital importance to ecosystem management and conservation. Additionally, understanding the effects of temperature on species interactions and community level processes is of particular interest due to expectations of continued global warming. The proposed work puts basic research of food web regulation in the context of a changing environment. |
| 学科分类 | 09 - 环境科学;0903 - 环境生物学 |
| 资助机构 | US-NSF |
| 项目经费 | 7341 |
| 项目类型 | Standard Grant |
| 国家 | US |
| 语种 | 英语 |
| 文献类型 | 项目 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/72850 |
| 推荐引用方式 GB/T 7714 | Gary Belovsky.DISSERTATION RESEARCH: Community Level Response to Global Change: The Effect of Temperature on the Relative Importance of Top-Down and Bottom-Up Effects.2006. |
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