Results 31 to 40 of about 1,566,030 (299)

How differences in plant abundance measures produce different species‐abundance distributions [PDF]

open access: yesMethods in Ecology and Evolution, 2012
Summary1. Species‐abundance distributions (SADs) are a convenient and common method for describing ecological communities. Despite their long history and the cornucopia of theoretical models, which have been suggested to describe them, no agreement has been reached as to which models are best.2.
Anderson B. J.   +2 more
openaire   +3 more sources

Species richness, abundance and phenology of fungal fruit bodies over 21 years in a Swiss forest plot [PDF]

open access: yes, 2001
Fungal fruit bodies were surveyed on a plot area of 1500 m2 from 1975¿99 (excluding 1980¿83) in the fungal reserve La Chaneaz in western Switzerland. Fruit bodies were identified and counted on a weekly basis.
Ayer, F., Egli, S., Straatsma, G.
core   +3 more sources

Butterflies of the high altitude Atacama Desert: habitat use and conservation

open access: yesFrontiers in Genetics, 2014
The butterfly fauna of the high-altitude desert of Northern Chile, though depauperate, shows high endemism, is poorly known and is of considerable conservation concern.
Emma eDespland
doaj   +1 more source

Waterbird community changes in the Wilderness Lakes, South Africa (Part 3 of 3): Diving piscivores and scavengers

open access: yesKoedoe: African Protected Area Conservation and Science, 2023
Estuarine waterbodies typically support diverse and abundant waterbird communities. However, global environmental degradation as a result of anthropogenic activities is leading to species level changes in biodiversity, with top predators such as ...
Ian A. Russell
doaj   +1 more source

Northeastern Atlantic benthic foraminifera during the last 45,000 years: Changes in productivity seen from the bottom up [PDF]

open access: yes, 1995
We studied benthic foraminifera from the last 45 kyr in the >63 mu m size fraction in Biogeochemical Ocean Flux Studies (BOFS) cores 5K (50 degrees 41.3'N, 21 degrees 51.9'W, depth 3547 m) and 14K (58 degrees 37.2'N, 19 degrees 26.2'W, depth 1756 m), at ...
Booth, L   +3 more
core   +1 more source

Fragmentation and insects: theory and application to calcareous grasslands [PDF]

open access: yesBiotechnologie, Agronomie, Société et Environnement, 2005
Habitat loss poses the greatest threat to the long-term survival of species on earth and has three major components: straightforward destruction of habitat, increasing fragmentation and deterioration of habitat quality. Habitat fragmentation, i.e.
Baguette M., Polus E., Vandewoestijne S.
doaj  

Road Zone Effects in Small-Mammal Communities

open access: yesEcology and Society, 2009
Our study focused on the putative effects of roads on small-mammal communities in a high desert region of southern Utah. Specifically, we tested whether or not roads create adjacent zones characterized by lower small- mammal densities, abundance, and ...
John A. Bissonette, Silvia A. Rosa
doaj   +1 more source

Wild Edible Plant Species in the ‘King’s Lagoon’ Coastal Wetland: Survey, Collection, Mapping and Ecological Characterization

open access: yesHorticulturae
Wild edible plants, botanically defined as phytoalimurgical species, have historically been a useful source of food to cope with recurrent famines and poor farming conditions.
Anna Rita Bernadette Cammerino   +4 more
doaj   +1 more source

Trait means or variance—What determines plant species' local and regional occurrence in fragmented dry grasslands?

open access: yesEcology and Evolution, 2021
One of the few laws in ecology is that communities consist of few common and many rare taxa. Functional traits may help to identify the underlying mechanisms of this community pattern, since they correlate with different niche dimensions.
Kolja Bergholz   +4 more
doaj   +1 more source

Understory epiphytic pteridophytes along altitudinal gradients on opposite slopes in the Atlantic Forest

open access: yesRodriguésia, 2023
Gradual climatic changes caused by mountains’ altitudinal variation promote alterations in the structure of ecological communities. Environmental changes are also expected according to the slope’s position in relation to the sea.
Thiago Vieira Costa   +2 more
doaj   +1 more source

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