Results 221 to 230 of about 46,886 (268)

A GIS Approach to Modeling the Ecological Niche of an Ecotype of <i>Bouteloua curtipendula</i> (Michx.) Torr. in Mexican Grasslands. [PDF]

open access: yesPlants (Basel)
Baez-Gonzalez AD   +5 more
europepmc   +1 more source

Genome-wide identification of selection signatures across altitudinal gradients in dairy sheep breeds. [PDF]

open access: yesSci Rep
Ben Jemaa S   +8 more
europepmc   +1 more source

Common Ragweed Ecotypes

Weed Science, 1971
Seed of common ragweed (Ambrosia artemisiifoliaL.) ecotypes were collected from 12 locations in North America and were planted at Ithaca, New York. Plants from seed collected in the northern latitudes flowered earlier and produced less vegetative growth.
C. T. Dickerson, R. D. Sweet
openaire   +1 more source

Malaria Ecotypes and Stratification

2012
To deal with the variability of malaria, control programmes need to stratify their malaria problem into a number of smaller units. Such stratification may be based on the epidemiology of malaria or on its determinants such as ecology. An ecotype classification was developed by the World Health Organization (WHO) around 1990, and it is time to assess ...
Schapira, A., Boutsika, K.
openaire   +3 more sources

Electrophoretic differences between sympatric ecotypes

Nature, 1975
ELECTROPHORESIS 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
openaire   +2 more sources

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