The size of a habitat is another factor in the great diversity of the rainforest. Area increases diversity because a larger plot is likely to have more habitats, hence niches, to support a greater variety of species. In addition, many species require a large range for adequate prey or seed forage.
What influences species richness?
The factors related to these patterns of small- scale species richness include (1) geographic factors such as scale of observation, available species pool and dispersal patterns, (2) biotic factors such as competition or predation and (3) abiotic environmental factors such as site resource availability, disturbance and …
What is the relationship between habitat or island size and species richness?
The more isolated an island is, the lower its species richness will be. An island’s size also affects its biodiversity, since larger islands will have a wider variety of habitats, so species which arrive on the island will diversify to fill up the available niches.
How does sample size affect species richness?
Samples underestimate community-wide richness.
More samples or larger samples increases the number of species documented and always approaches the true parameter (S) from below.
What is the relationship between habitat size and species diversity?
The relationship between habitat size and species diversity is that the smaller the habitat, the less diversity of species there will be. The smaller the “island,” the fewer species can live there, the smaller their populations can be, and the more vulnerable they are to further disturbance or climate change.
How does species richness influence species diversity?
Species richness refers to the number of species in an area. … The relative abundance of each species is more evenly distributed than Community 1. While both communities have the same species richness, Community 1 would have greater diversity due to the relative abundance of each species present.
What affects species richness on islands?
Species richness on oceanic islands has been related to a series of ecological factors including island size and isolation (i.e. the Equilibrium Model of Island Biogeography, EMIB), habitat diversity, climate (i.e., temperature and precipitation) and more recently island ontogeny (i.e. the General Dynamic Model of …