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...
Species richness is often used to compare the biodiversity of different biological communities, compare the number of species within a particular taxonomic grouping (such as birds or mammals) at different locations, and monitor changes in a particular biological community over time. measuring ...
A common measure of this variety, called species richness, is the count of species in an area. Colombia and Kenya, for example, each have more than 1,000 breeding species of birds, whereas the forests of Great Britain and of eastern North America are home to fewer than 200. A coral ...
The relationship between plant productivity and species richness is one of the most debated and important issues in ecology. Ecologists have found numerous forms of this relationship and its underlying processes. However, theories and proposed drivers ha
1. A fundamental question in ecology is which factors determine species richness. Here, we studied the relative importance of regional species pool and local environmental characteristics in determining local species richness (LSR). Typically, this question has been studied using whole communities or a...
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...
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. ...
Without recognizing the outsized effect of keystone plants on the energy flow through food webs, plant selection for landscape projects that is based only on commercial availability, aesthetic criteria, or dual use such as lumber or fruit production34,35, will be unable to support the richness ...
Climate is an important limiting factor of species’ niches and it is therefore regularly included in ecological applications such as species distribution models (SDMs). Climate predictors are often used in the form of long-term mean values, yet many species experience wide climatic variation over ...
(Fig.6d). These low and high values for bio3 and bio15 are somewhat surprising, as global tree species richness is generally associated with high isothermality and low precipitation seasonality40. A possible explanation is the progressive shift towards more seasonal climates throughout the Oligocene...