Simple trophic modules for complex food webs
There are two common approaches to food webs. On the one hand, empirical studies have described aggregate statistical measures of many-species food webs. On the other hand, theoretical studies have explored the dynamic properties of simple tri-trophic food chains (i.e., trophic modules). The questio...
| Autores: | , |
|---|---|
| Tipo de recurso: | artículo |
| Fecha de publicación: | 2005 |
| País: | España |
| Institución: | Consejo Superior de Investigaciones Científicas (CSIC) |
| Repositorio: | DIGITAL.CSIC. Repositorio Institucional del CSIC |
| OAI Identifier: | oai:digital.csic.es:10261/41679 |
| Acceso en línea: | http://hdl.handle.net/10261/41679 |
| Access Level: | acceso abierto |
| Palabra clave: | Apparent competition Complex networks food-web models Food webs intraguild predation network motifs omnivory |
| Sumario: | There are two common approaches to food webs. On the one hand, empirical studies have described aggregate statistical measures of many-species food webs. On the other hand, theoretical studies have explored the dynamic properties of simple tri-trophic food chains (i.e., trophic modules). The question remains to what extent results based on simple modules are relevant for whole food webs. Here we bridge between these two independent research agendas by exploring the relative frequency of different trophic mod- ules in the five most resolved food webs. While apparent competition and intraguild pre- dation are overrepresented when compared to a suite of null models, the frequency of omnivor y highly varies across communities. Inferences about the representation of modules may also depend on the null model used for statistical significance |
|---|