the great GMO vs organic debate Biology Diagrams Structural properties such as food chain length, With the concern of focusing on this upstream role (does evolution design robust food webs?), we have developed a community evolution model describing the genesis of food webs. It shows that evolutionary history does not always shape food webs in a way that their functioning, at least for
The earliest identified food chains seem to have concerned hyper-parasitism (Egerton 2005, 2006a), which students of insects discovered in the later 1600s.But it was entrepreneurial naturalist Richard Bradley (Egerton 2006b) who generalized the concept (Bradley 1718, part 3:60-61):Insects which prey upon others are not without some others of lesser Rank to feed upon them likewise, and so to The present article aims at understanding how species evolution and coevolution affects the response of a simple food chain subject to fertilization (bottom-up effect). The model without evolution is top-down controlled as in Oksanen et al.'s (1981) classical model. We show how evolution, or adaptive dynamics, affects the phenotypic traits at
Eco-Evo Effects Up and Down the Food Chain Biology Diagrams
In one notable example, David Post is focusing on how the alewife, a fish that lives in lakes in eastern North America, shapes and is shaped by its freshwater ecosystem. The community ecologist from Yale University and his colleagues have shown how these so-called eco-evo effects can ripple across a food web in unexpected ways.
We show how evolutionary dynamics can alter the predictions of classical models of the effects of nutrient enrichment on food webs. We compare an ecological nutrient-plant-herbivore food-chain
How geographic productivity patterns affect food Biology Diagrams
Food Chains are a crucial part of the food web and show how energy is passed along from one species to another, making it possible for all species to survive. Food Chains are also an important tool for studying the health and productivity of an ecosystem, helping to identify any potential issues with a species or with the environment.
