WARNING:
JavaScript is turned OFF. None of the links on this concept map will
work until it is reactivated.
If you need help turning JavaScript On, click here.
This Concept Map, created with IHMC CmapTools, has information related to: Kelli Smith Bryan Heyer, species diversity effected by species eveness, The many interactions between species greatly impact the structure of communities and ecosystems interactions including Direct Interactions, when negative impacts arise as a result of two species sharing a predator or hervicore for example how Brassica nigra negatively affects Nassella pulchra, species eveness defined as relative abundance of species, small herbivores due to B. nigra acting as a refuge for small mammalian herbivores while not being a food source for them, apparent competition which is when negative impacts arise as a result of two species sharing a predator or hervicore, how predatory sea stars affect species diversity since starfish keep prey populations below carrying capacity and prevent potential for competitive exclusion, food webs which are defined as summaries of the feeding interactions withina community, species diversity also depends on Niches, keystone species defined as species with relatively low biomass that have a great impact on community structure, species that have substantial influences on community structure as a result of their high biomass for example Phragmites australis, Niches for example algal niches depend on thier nutrient content between silicate and phosphorus. if they have low amount of silicate and phosphate they coexist however a higher amount throw off the ratio, Phragmites australis in which the wetland reed is a source of strong interactions for many herbivores, beavers benefitting leaf beetles done through interactions with cottonwood trees, starfish keep prey populations below carrying capacity and prevent potential for competitive exclusion resulting in greater species richness and diversity, The many interactions between species greatly impact the structure of communities and ecosystems interactions including Indirect Interactions, departure from average conditions two major causing are frequency and intensity for example Boulders supporting greatest diversity of species were those subject to intermediate levels of disturbance., positive or negative effects of one species on another without the involvement of another intermediary species most commonly feeding relations, when one species affects another through a third intermediary species for example apparent competition, number of species in the community so.. with greater species eveness it ahs a higher species diversity