The difference between species diversity and species richness Species richness, very simply, is a count of the different species in a given ecosystem, region, or particular area. Species richness is sometimes considered synonymous with species diversity, but the formal metric species diversity takes in...
Richness Species richnessis the most widely used parameter for evaluating aspects of fungal biodiversity. It is deceptively simple to define species richness as an enumeration of the species that are associated with a particular sample, area, habitat, or substratum. In fact, three kinds of species...
The species richness hypothesis, which predicts that species-rich communities should be better at resisting invasions than species-poor communities, has been empirically tested many times and is often poorly supported. In this study, we contrast the species richness hypothesis with four alternative hypot...
However, contrary to most previous work, we also find no support for the hypotheses that high species richness is correlated with small body size and fast life history. Rather, high species diversity is strongly associated with pronounced plumage dichromatism, generalist feeding habits and good ...
Species richness is low when there are few species and high when there are many. Species evenness. Species evenness refers to the relative abundance of species. If one species is very abundant, and two others are rare, then species evenness is low. If all species are equally a...
Relative to similar studies in other temperate regions, we found that a smaller proportion of species were classified as rare in our study region, and that common species dominate the flora. Regional-scale relationships were positive between richness and the occurrence of rare species; however, due...
Learn more about this topic: Species Richness | Definition, Equation & Example from Chapter 7 / Lesson 1 88K In this lesson, learn about species richness and how to calculate species richness, as well as species abundance vs. species richness an...
This recognition is critical for the development and testing of theories explaining patterns of species richness because different theories have mechanistic bases at different scales of action. Scale includes four attributes: sample-unit, grain, focus and extent. Focus is newly defined here. ...
1 At local spatial scales, species richness tends to fall as productivity rises. Most explanations have focused on increased extinction, but, instead, we test experimentally whether increased soil fertility reduces recruitment. Specifically, we test whether variation in recruitment is due to source limi...
Learn more about this topic: Species Richness | Definition, Equation & Example from Chapter 7 / Lesson 1 88K In this lesson, learn about species richness and how to calculate species richness, as well as species abundance vs. species richness and species diversity. Related ...