Consumer Resource Interactions

Ppt Consumer Resource Interactions Chapter 17 Powerpoint Consumer–resource interactions. consumer–resource interactions are the core motif of ecological food chains or food webs, [1] and are an umbrella term for a variety of more specialized types of biological species interactions including prey predator (see predation), host parasite (see parasitism), plant herbivore and victim exploiter systems. Consumer–resource interactions are varied and dynamic in streams, and they include predation, herbivory, and detritivory. in this chapter, we focus on top down effects of predation and herbivory involving macroinvertebrates and their major food resources consisting of invertebrate prey or algae. methods are presented to (1) evaluate the.

Ppt Consumer Resource Interactions Chapter 17 Powerpoint Consumer resource interactions drive ecosystem functions, and ecosystem functions are the underlying mechanisms that govern all ecosystem services. the general model provides a useful foundation for understanding and constructing food web models central to understanding ecological complexity. Consumer resource model. in theoretical ecology and nonlinear dynamics, consumer resource models (crms) are a class of ecological models in which a community of consumer species compete for a common pool of resources. instead of species interacting directly, all species species interactions are mediated through resource dynamics. 9. consumer resource interactions. consumption is unavoidably fundamental to life. organisms are at a disequilibrium with their surroundings, requiring inputs of resources to maintain themselves, grow, and reproduce. we first considered organisms from this biophysical or energetic context when we discussed foraging. The seminal work of yodzis and innes reduced the analysis of consumer–resource interactions to two aggregate parameters; consumer maximal energetic efficiency and a measure of resource abundance. a variation of maximal energetic efficiency (termed energetic efficiency) has been widely used in empirical studies.