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On testing temporal niche differentiation in carabid beetles
Oecologia, 1989It is first shown that den Boer's (1985) claims that competition should be rejected as a factor explaining community structure are not warranted by his tests on temporal niche differentiation in carabid beetles. The power of these tests is so low that they are unlikely to detect even the most extreme pattern of niche differentiation.
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Competition and the niche; limiting similarity and differential niche overlap
1984In the previous chapter, competition was shown to influence both the size of the niche and the degree of niche overlap between species. The ideas discussed there lead to an interesting question. If no two species can occupy the same niche indefinitely when resources are limiting, then how similar can two species be and still coexist?
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Microengineered embryonic stem cells niche to induce neural differentiation
2015 37th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC), 2015A major challenge in therapeutic use of embryonic stem cells (ESCs) for treating neurodegenerative diseases is creating a niche in vitro for controlled neural-specific differentiation of ESCs. We employ a niche microengineering approach to derive neural cells from ESCs by mimicking embryonic development in terms of direct intercellular interactions ...
Ramila, Joshi, Hossein, Tavana
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Differential Feeding and Niche Relationships among Orthoptera
Ecology, 1966The acridian species Melanoplus bivittatus (Say), Melanoplus differentials (Thomas) and Melanoplus lakinus (Scudder) occur in the same habitat, utilizing the same foods. Such coexistence suggests that these species are in the same niche and in competition for a common food supply.
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Differential Niche Utilization in a Grassland Sparrow
Ecology, 1971Henslow's Sparrow (Ammospiza henslowii) is a secondary sexually monomorphic breeding bird in meadows, hayfields, prairies, grasslands, and some croplands in eastern North America. Foraging behavior during the nestling period involved no intersexual differences in prey selection, and both sexes were opportunistic in food choice.
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Direct Effects on Organisms and Niche Differentiation
2003Various general properties of HS are involved in biological processes of surface waters: protonation/deprotonation: influences the acid-base status of freshwaters (Chap. 3) light absorption: acts as UV shield, light absorption limits the depth of the euphotic zone with strong thermal gradients during summer stratification (Chaps.
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Competition and Niche Differentiation in Bumblebee Communities
2009Abstract There are about 250 species of bumblebee worldwide, mostly distributed through the temperate, alpine and arctic regions of the northern hemisphere (Williams 1989a).In most communities, several different species of bumblebee occur sympatrically (Ranta and Vepsäläinen 1981; Williams 1989b).
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Local and systemic mechanisms that control the hair follicle stem cell niche
Nature Reviews Molecular Cell Biology, 2023exaly