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Electrophoretic differences between sympatric ecotypes
Nature, 1975ELECTROPHORESIS has been used extensively for characterising genetic variability within and between natural populations1,2 but has not been applied to sympatric ecotypes. In the mosquito Aedes aegypti a dark feral form predominates throughout sub-Saharan Africa, but elsewhere in the tropics and moist subtropics a paler domestic form is found.
J A, Scott, G A, McClelland
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Ecotypes and Community Function
The American Naturalist, 1960The result of natural selection is commonly a pattern of ecotypic variation within a species. This has proven to be of rather general occurrence among trees, shrubs, grasses, and herbs, annual and perennial. Among animal species, the demonstration is less general, but includes examples among insects, fishes, amphibians, and rodents.
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The History of the Family, 2000
Ecological arguments have long been used in research to explain the forms of peasant households. In the rich family literature concerning the European Alps they hold a particularly prominent position. Using alpine macro- and microdata, the article shows that the proposed ecological models do not hold up under scrutiny, and that sociopolitical ...
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Ecological arguments have long been used in research to explain the forms of peasant households. In the rich family literature concerning the European Alps they hold a particularly prominent position. Using alpine macro- and microdata, the article shows that the proposed ecological models do not hold up under scrutiny, and that sociopolitical ...
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On Ecotype Urban Heritage Tourism
Advanced Materials Research, 2011Based on an analysis of the status of urban heritage in urban ecosystem and its relationship with urban tourism development on the theory of ecological niche, this paper argues that urban heritage is a kind of nature-based human ecology, merging with natural ecology through the interaction of humans with nature, and urban heritage tourism is a kind of ...
Jin Hua Luo, Shu Qi Yuan
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Ecotypes and Ecosystem Function
BioScience, 1969ecotype in ecosystem function is primarily one of allowing a community of organisms to adjust to its habitat." The second: "The simultaneous selection of ecotypic variants within different kinds of organisms occupying a given area results in harmonious functions of a particular ecosystem." The third: "The selection of eco-genetic gradients results in ...
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Brain metastasis: From etiology to ecotypes
Cancer CellDespite recent advances in anti-cancer therapies, metastasis, especially to the brain, represents a major clinical challenge with rising incidences. In this issue of Cancer Cell, Xing et al. present a comprehensive transcriptomic map of the metastatic brain tumor environment at single-cell resolution.
Michael, Schulz, Marco, Prinz
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Adaptation and ecotypic components
Proceedings of the Royal Society of London. Series B - Biological Sciences, 1956Abstract At the present time botanical ecotypic investigations are still concerned mainly with amplifying the records of ecotypically differentiated populations and defining their patterns, and only incidentally with the processes of ecotypic fractionation.
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Ecotypic Differentiation in Diamorpha cymosa
Botanical Gazette, 1964In the winter of 1959 population samples of Diamorpha cymosa Nutt. were transplanted from numerous granite and sandstone outcrops to a simulated outcrop in an experimental garden on the Emory University campus. Population samples from a centrally located outcrop were reciprocally transplanted to each outcrop visited.
J. Frank McCormick, Robert B. Platt
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PHOTOPERIODIC ECOTYPES OF TREES
Canadian Journal of Botany, 1954Seedlings of Pinus sylvestris L. and Alnus incana (L.) Moench. from two widely different latitudes were grown under two different photoperiods, but otherwise under optimum conditions. Under continuous light the seedlings from a far northern latitude grew better than those from a more southern latitude.
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