1). This is particularly notable in a PCA of west Eurasian individuals, in which the variance explained by the first two PCs increases more than 1.5-fold, and present-day populations are confined within a small central area of the PCA space (Fig. 1d and Extended Data Fig. 1c,d). ...
To determine the drivers of evolution in this species, 225 individuals belonging to 15 populations from different geographic locations were sampled, and population genetics was studied using high-throughput genotyping-by-sequencing (GBS). Based on genetic diversity analysis, phylogenetic analysis, ...
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Such migration affects the age distributions in different types of areas...producing a unique demography within many area types." (EXCERPT) 展开 关键词: Population Population Distribution Socioeconomic Factors Population Growth Migration Geographic Factors Natural Increase Age Distribution Changes Developed ...
Census geographic unit population densities of Beijing urban area.An ZhangQingwen QiLili JiangFang ZhouJinfeng Wang
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(E) The North Pacific populations of seals and sea lions cover a wider geographic area than does the population of sea otters. 逻辑链:seal 和sea lion也染病下降了—》疾病是sea otter下降的原因 求削弱 A. 杀人鲸没有seal 和sea lion吃的时候会吃别的 ...
SummaryTwo groups of centenarians (32 subjects) were evaluated, residing in the same geographic area, in two sampling periods (1988 and 1992). The characteristics of the groups were compared to see how this age class changed over a 4 year period. Significant differences were found for the numb...
basin. This peculiarity is largely because HydroBASINS is constructed for river networks, as opposed to lakes. Because it is unrealistic for these 1,304 lakes (average total area: 2.39 km2) to be influenced by near continental-scale climate and human population forcings, we excluded these lakes...
Indeed the scuba diver’s view was at least 10 times wider than 50 cm from the side around the rope and hence, the perception of absence can be extended over a much larger surface area investigated. By merging these two sources of information, we can assume that the absence data ...