Results 31 to 40 of about 809,119 (310)

Abundance and diversity of soil arthropods and fungi in shelterbelts integrated with pastures in the central tablelands of New South Wales, Australia

open access: yesJournal of Forest Science, 2012
Shelterbelts are important for the sustainability of agriculture because they provide a variety of benefits to farmers and the society. Several published papers demonstrate that integration of shelterbelts with agroecosystems offers positive outcomes ...
E.W. Mbuthia   +5 more
doaj   +1 more source

Ecological equivalence: a realistic assumption for niche theory as a testable alternative to neutral theory [PDF]

open access: yes, 2009
Hubbell's 2001 neutral theory unifies biodiversity and biogeography by modelling steady-state distributions of species richness and abundances across spatio-temporal scales.
Doncaster, C. Patrick   +2 more
core   +1 more source

Vegetation associations of riparian birds in successional woodlands along the regulated Missouri River

open access: yesAvian Conservation and Ecology, 2023
River regulation by dams on the Missouri River has modified riparian forest successional patterns, with decreases in early and increases in later seral stages and higher occurrence of invasive tree species, including Russian olive ( Elaeagnus ...
Christopher L. Merkord   +4 more
doaj   +1 more source

Local and regional rarity in a diverse tropical fish assemblage [PDF]

open access: yes, 2012
Because most species in an ecological assemblage are rare, much of the species richness we value is due to taxa with few individuals or a restricted distribution.
Sobansky, M   +7 more
core   +1 more source

Distribution, abundance, and feeding ecology of baleen whales in Icelandic waters: have recent environmental changes had an effect? [PDF]

open access: yes, 2015
Date of Acceptance: 13/01/2015The location of Iceland at the junction of submarine ridges in the North-East Atlantic where warm and cold water masses meet south of the Arctic Circle contributes to high productivity of the waters around the island. During
Bjarni Mikkelsen   +34 more
core   +1 more source

Relative contribution of neutral and deterministic processes in shaping fruit‐feeding butterfly assemblages in Afrotropical forests

open access: yesEcology and Evolution, 2018
The unified neutral theory of biodiversity and biogeography has gained the status of a quantitative null model for explaining patterns in ecological (meta)communities.
Kwaku Aduse‐Poku   +5 more
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

Distribution and abundance of fish and crayfish in a Waikato stream in relation to basin area [PDF]

open access: yes, 2003
The aim of this study was to relate the longitudinal distribution of fish and crayfish to increasing basin area and physical site characteristics in the Mangaotama Stream, Waikato region, North Island, New Zealand.
Hicks, Brendan J., Brendan J. Hicks
core   +1 more source

Estimating bird abundance : making methods work [PDF]

open access: yes, 2008
In many bird monitoring Surveys, no attempt is made to estimate bird densities or abundance. instead, counts of one form or another are made, and these are assumed to correlate with bird density. Unless complete Counts Oil Sample plots are feasible, this
Marsden, Stuart J.   +2 more
core   +1 more source

Shaping beta diversity in arid landscape through native plant species contributions: synergy of climate, soil, and species traits

open access: yesFrontiers in Plant Science
Understanding how species traits, climate aridity, and soil resources interact to influence beta diversity is critical for predicting changes in plant community composition.
Reham Fekry El-Barougy   +10 more
doaj   +1 more source

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