Results 21 to 30 of about 233,597 (315)

Estimating the spatial and temporal distribution of species richness within Sequoia and Kings Canyon National Parks. [PDF]

open access: yesPLoS ONE, 2014
Evidence for significant losses of species richness or biodiversity, even within protected natural areas, is mounting. Managers are increasingly being asked to monitor biodiversity, yet estimating biodiversity is often prohibitively expensive.
Steve Wathen   +3 more
doaj   +1 more source

Environmental determinants of avian species richness in forests in a highly urbanized subtropical city: The effects of spatial scale and open space feature

open access: yesGlobal Ecology and Conservation, 2021
Numerous avian studies have emphasized the importance of natural/semi-natural elements, especially green spaces to conserve avian diversity in a city.
Myung-Bok Lee   +7 more
doaj   +1 more source

Predicting microbial species richness [PDF]

open access: yesProceedings of the National Academy of Sciences, 2005
Microorganisms are spectacularly diverse phylogenetically, but available estimates of their species richness are vague and problematic. For example, for comparable environments, the estimated numbers of species range from a few dozen or hundreds to tens of thousands and even half a million.
Sun-Hee, Hong   +3 more
openaire   +2 more sources

Vascular plant species richness and bioindication predict multi‐taxon species richness [PDF]

open access: yesMethods in Ecology and Evolution, 2018
Abstract Plants regulate soils and microclimate, provide substrate for heterotrophic taxa, are easy to observe and identify and have a stable taxonomy, which strongly justifies their use as indicators in monitoring and conservation.
Ane Kirstine Brunbjerg   +12 more
openaire   +4 more sources

A Truncation Model for Estimating Species Richness [PDF]

open access: yesThe International Journal of Biostatistics, 2018
Abstract We propose a truncation model for the abundance distribution in species richness estimation. This model is inherently semiparametric and incorporates an unknown truncation threshold between rare and abundant observations. Using the conditional likelihood, we derive a class of estimators for the parameters in this model by ...
Koladjo, Babagnidé François   +2 more
openaire   +3 more sources

How do biodiversity patterns of river animals emerge from the distributions of common and rare species? [PDF]

open access: yes, 2008
We studied the patterns of commonness and rarity for one vertebrate (fish) and four freshwater insect taxa (Ephemeroptera, Plecoptera, Trichoptera and Coleoptera) in southwestern France (57,000 km²), and we analysed the relationships between the location
Cucherousset, Julien   +3 more
core   +1 more source

Main predictors of periphyton species richness depend on adherence strategy and cell size.

open access: yesPLoS ONE, 2017
Periphytic algae are important components of aquatic ecosystems. However, the factors driving periphyton species richness variation remain largely unexplored.
Vanessa Majewski Algarte   +8 more
doaj   +1 more source

Latitudinal gradient in Gnomeskelus species richness [PDF]

open access: yesArthropods, 2020
The Tropical Conservativism Hypothesis suggests processes of speciation, extinction and dispersal resulted in higher species richness at the tropics and declined away from the equator. Biogeographical Conservativism Hypothesis suggests that the processes
Mark Cooper
doaj  

The Importance of Including Soil Properties When Disentangling the Drivers of Species Richness: The Case of the Alpine Genus Saxifraga L. in China

open access: yesFrontiers in Ecology and Evolution, 2020
Despite the numerous studies on the large-scale patterns of species richness, the spatial variation and determinants of species richness for the alpine plants are still an outstanding question and critical to future biodiversity conservation.
Lian Liu   +9 more
doaj   +1 more source

Does residence time affect responses of alien species richness to environmental and spatial processes? [PDF]

open access: yes, 2012
One of the most robust emerging generalisations in invasion biology is that the probability of invasion increases with the time since introduction (residence time). We analysed the spatial distribution of alien vascular plant species in a region of north-
Dainese,Matteo   +5 more
core   +1 more source

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