Results 301 to 310 of about 4,234,405 (332)

Species Richness: Estimation and Comparison

, 2016
On the basis of the sampling data from an assemblage, estimation of species richness (observed plus undetected) is statistically difficult especially for highly-diverse assemblages with many rare species.
A. Chao, Chun‐Huo Chiu
semanticscholar   +1 more source

Speciose versus species-rich

Trends in Ecology & Evolution, 2008
The evolution of word use has contributed to the rich vocabulary of English in general and has made scientific English a particularly dynamic tool. However, some changes in word use have costs as well as benefits, and involve unintended consequences.
openaire   +3 more sources

Abundance of common species, not species richness, drives delivery of a real-world ecosystem service.

Ecology Letters, 2015
Biodiversity-ecosystem functioning experiments have established that species richness and composition are both important determinants of ecosystem function in an experimental context.
R. Winfree, J. Fox, N. Williams, J. Reilly, Daniel P. Cariveau   +4 more
semanticscholar   +1 more source

Nonparametric Estimation and Comparison of Species Richness

, 2016
Species richness (the number of species) in an assemblage is a key metric in many research fields of ecology. Simple counts of species in samples typically underestimate the true species richness and strongly depend on sampling effort and sample ...
A. Chao, Chun‐Huo Chiu
semanticscholar   +1 more source

The Estimation of Species Richness by Extrapolation

Ecology, 1990
Numerous methods have been proposed for estimating the number of species, or species richness (SR) in a community. Most methods assume taxa are sampled as "individuals" (e.g., Fisher et al. 1943, Efron and Thisted 1976, Slocomb and Dickson 1978). This may be approporiate for animals, which occur as discrete individuals, but it is inappropriate for ...
Michael W. Palmer, Michael W. Palmer
openaire   +2 more sources

The carrying capacity for species richness

Global Ecology and Biogeography, 2019
AbstractThe idea that the number of species within an area is limited by a specific capacity of that area to host species is old yet controversial. Here, we show that the concept of carrying capacity for species richness can be as useful as the analogous concept in population biology. Many lines of empirical evidence indicate the existence of limits of
Jordan G. Okie, David Storch, David Storch   +2 more
openaire   +2 more sources

Nonparametric Estimation of Species Richness

Biometrics, 1984
Two procedures, the jackknife and the bootstrap, are discussed as methods for estimating the number of species by the sampling of quadrats. Explicit formulas for both procedures are presented and evaluated under a model with a random distribution of individuals.
Eric P. Smith, G. Van Belle
openaire   +2 more sources

Species richness maintains mutualisms

Science, 2020
Ecology Mutualistic communities of species that benefit each other are ubiquitous in ecosystems and are important for ecosystem functioning. However, the relationship between the persistence of mutualisms and species richness has remained unclear. Vidal et al.
openaire   +2 more sources

Functional diversity (FD), species richness and community composition

, 2002
Functional diversity is an important component of biodiversity, yet in comparison to taxonomic diversity, methods of quantifying functional diversity are less well developed.
Owen L. Petchey, K. Gaston
semanticscholar   +1 more source

WHAT IS THE OBSERVED RELATIONSHIP BETWEEN SPECIES RICHNESS AND PRODUCTIVITY

, 2001
Understanding the relationship between species richness and productivity is fundamental to the management and preservation of biodiversity. Yet despite years of study and intense theoretical interest, this relationship remains controversial.
G. Mittelbach, Christopher F. Steiner, S. Scheiner, K. Gross, H. Reynolds, R. Waide, M. Willig, S. Dodson, L. Gough   +8 more
semanticscholar   +1 more source