Results 21 to 30 of about 269,916 (262)

Estimating the Richness of a Population When the Maximum Number of Classes Is Fixed: A Nonparametric Solution to an Archaeological Problem [PDF]

open access: yes, 2012
Background: Estimating assemblage species or class richness from samples remains a challenging, but essential, goal. Though a variety of statistical tools for estimating species or class richness have been developed, they are all singly-bounded: assuming
Wen-Han Hwang   +15 more
core   +2 more sources

Fire Effects on Understory Forest Regeneration in Southern Amazonia

open access: yesFrontiers in Forests and Global Change, 2020
Fire in tropical forests increases tree mortality, degrades forest structure, and reduces carbon stocks. Currently, there are large gaps in understanding how fire affects understory forest structure and composition, interactions with fire recurrence, and
Nayane Cristina Candida dos Santos Prestes   +15 more
doaj   +1 more source

Comparison of species richness of light trap-collected caddisfly assemblages (Insecta: Trichoptera) using rarefaction [PDF]

open access: yes, 2002
ConselVation value of light trap-collected caddisfly assemblages(Insecta: Trichoptera) was evaluated on the basis of their species richness. The assemblage coming from an artificial stream showed a higher conservation value based on species richness than
Schmera, Dénes
core   +1 more source

Do the Rich Vote Conservative Because They Are Rich? [PDF]

open access: yesReview of Economics and Institutions, 2010
Political economics predicts that the rich oppose redistribution and vote for conservative parties. Although this seemingly fits the data well in most countries, I show that the relationship breaks down when we control for unobservable characteristics. Using Norwegian survey data, I study to what extent voting is caused by income.
openaire   +3 more sources

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

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

Richness of species and growth‐forms within sclerophyll and mesophyll vegetation in eastern Australia [PDF]

open access: yes, 1998
[Abstract]: The patterns in total species richness and in the richness of the dominant growth-forms of vegetation communities of coastal sclerophyll and mesophyll vegetation in eastern Australia are examined.
Andrew F. Le Brocque   +1 more
core   +1 more source

Landscape Composition and Forest Structure Shape Phyllostomid Bat Assemblages in the Atlantic Forest Remnants

open access: yesAnimals
Habitat loss and land-use intensification are major threats to biodiversity in the Brazilian Atlantic Forest, particularly for bat assemblages that provide key ecosystem services.
Ricardo Bovendorp   +3 more
doaj   +1 more source

Impact of land-use changes on ant communities and the retention of ecosystem services in Rashad District, Southern Kordofan, Sudan

open access: yesSouth African Journal of Science, 2022
The ecological consequences of biodiversity loss are usually the reduction of ecosystem functions. These responses, however, differ depending on the type of land-use change and the ecological setting.
Khalid A.E. Eisawi   +3 more
doaj   +1 more source

Supplementary Table 3: Microbiota richness and diversity (Observed richness, Shannon diversity, Evenness).

open access: yes, 2022
Microbiota richness and diversity (Observed richness, Shannon diversity, Evenness).
Jeroen Raes (12837450)   +9 more
core   +1 more source

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