Results 61 to 70 of about 190,405 (306)

Conventional niche overlap measurements are not effective for assessing interspecific competition

open access: yesFrontiers in Ecology and Evolution, 2023
Interspecific competition is notoriously difficult to detect and quantify, especially in species that are wide-ranging or otherwise difficult to track in the wild.
Dennis L. Murray   +3 more
doaj   +1 more source

Solving the woolly mammoth conundrum: amino acid 15N-enrichment suggests a distinct forage or habitat [PDF]

open access: yes, 2015
Understanding woolly mammoth ecology is key to understanding Pleistocene community dynamics and evaluating the roles of human hunting and climate change in late Quaternary megafaunal extinctions. Previous isotopic studies of mammoths’ diet and physiology
Longstaffe, Fred J   +3 more
core   +2 more sources

Evaluation of the Potential of Laser Shock Peening Compared with Cold Expansion for Improving Fatigue Resistance of Riveted Lap Joints of Aerospace Grade 7175 Al Alloy

open access: yesAdvanced Engineering Materials, EarlyView.
This study investigates laser shock peening for enhancing fatigue performance of riveted aerospace aluminum joints. A comparative approach with cold expansion combines fatigue testing and synchrotron X‐ray methods. Integrating mechanical testing with residual stress and strain characterization provides insights into how different treatments affect the ...
Ogün Baris Tapar   +6 more
wiley   +1 more source

To what degree are philosophy and the ecological niche concept necessary in the ecological theory and conservation? [PDF]

open access: yes, 2017
Ecology as a field produces philosophical anxiety, largely because it differs in scientific structure from classical  physics. The hypothetical deductive models of classical physics are simple and predictive; general ecological models are ...
Martins, Rogério P
core   +6 more sources

Wetland selection, niche breadth and overlap in 10 duck species wintering in northern Campania (Italy)

open access: yesRivista Italiana di Ornitologia - Research in Ornithology, 2018
Analysis of the selection index, the niche breadth and the niche overlap of 10 species of wintering ducks in 11 wetland areas of the Campania region between January 2003 and 2015 revealed that the distribution of the species in the examined sites was not
Stefano Giustino   +7 more
doaj   +1 more source

Invasion success of a global avian invader is explained by within-taxon niche structure and association with humans in the native range [PDF]

open access: yes, 2015
Aim To mitigate the threat invasive species pose to ecosystem functioning, reli- able risk assessment is paramount. Spatially explicit predictions of invasion risk obtained through bioclimatic envelope models calibrated with native species distribution ...
Araújo   +59 more
core   +1 more source

Is Young's Modulus a Critical Coating Property Determining Fouling‐Release Performance of Marine Coatings?

open access: yesAdvanced Engineering Materials, EarlyView.
The release of foulers from protective marine coatings is determined by several interrelated material properties, including the strength of Young's modulus, the flexibility of chain segments, the surface free energy, and the magnitude of hydrodynamic stress.
Johann C. Schaal   +2 more
wiley   +1 more source

Niche diversification of Sphagnum in Bolivia [PDF]

open access: yes, 1997
Niche breadth values of Sphagnum species in the páramo and cloud forests of Bolivia are similar to those reported for Sphagnum-dominated peatlands in North America, but niche overlap values are higher for Sphagnum species in Bolivia. The pH, conductivity,
McQueen, Cyrus B.
core  

How Gaussian competition leads to lumpy or uniform species distributions [PDF]

open access: yes, 2009
A central model in theoretical ecology considers the competition of a range of species for a broad spectrum of resources. Recent studies have shown that essentially two different outcomes are possible. Either the species surviving competition are more or
A Sasaki   +32 more
core   +2 more sources

Statistical Inference on Measures of Niche Overlap [PDF]

open access: yesEcology, 1985
Estimates of measures of niche overlap are often reported without any indication of sampling variance or an accompanying confidence interval. We have investigated the delta, jackknife, and bootstrap methods for making statistical inferences on four measures of niche overlap: the coefficient of community, Morisita's index, Horn's index, and the ...
Mueller, Laurence D, Altenberg, Lee
openaire   +3 more sources

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