筛选
科学数据
统计数据
共检索到3221条 ,权限内显示50条;
Great Plains Population and Environment Data: Social and Demographic Data, 1870-2000 [United States];;Archival Version
- 负责人:
- 关键词:
- DOI:
- doi:10.3886/icpsr04296
- 摘要:
- and housing units in the United States, the following summarizes the sampling methodology used in the United States Population Census from 1870 to 2000
Data from: On the probabilities of branch durations and stratigraphic gaps in phylogenies of fossil taxa when rates of diversification vary over time
- 负责人:
- DOI:
- doi:10.5061/dryad.926bs5d
- 摘要:
- to sample predecessors (ancestors) and over which there are no divergences leading to sampled relatives (sister taxa). The former reflects only sampling
Data from: Oral samples as non-invasive proxies for assessing the composition of the rumen microbial community
- 负责人:
- DOI:
- doi:10.5061/dryad.1b07d
- 摘要:
- community, thereby enabling more convenient large-scale animal sampling for phenotyping and possible use in future animal breeding programs aimed at selecting
Data from: A non-lethal sampling method to obtain, generate and assemble whole-blood transcriptomes from small, wild mammals
- 负责人:
- DOI:
- doi:10.5061/dryad.p760b
- 摘要:
- of blood, which represents the upper limit of sample collection for some small species. In this study, we developed a nonlethal sampling method
Data from: Information-theoretic analysis of realistic odor plumes: what cues are useful for determining location?
- 负责人:
- 关键词:
- DOI:
- doi:10.5061/dryad.04t19
- 摘要:
- to determine sampling location is the focus on this article. To investigate which sampling strategies are most informative about the location of an odor source
Data from: Genetic sampling for estimating density of common species
- 负责人:
- DOI:
- doi:10.5061/dryad.s04h8
- 摘要:
- densities. Here, we explored whether noninvasive genetic sampling (NGS) also offers promise for sampling a relatively common species, the snowshoe hare
Data from: Uneven sampling and the analysis of vocal performance constraints
- 负责人:
- DOI:
- doi:10.5061/dryad.36847
- 摘要:
- to females, consistent with a history of sexual selection favoring high-performance trills. Here, we identify a sampling limitation that confounds
Data from: Sex, size and timing: sampling design for reliable population genetics analyses using microsatellite data
- 负责人:
- 关键词:
- Boloria aquilonaris
- DOI:
- doi:10.5061/dryad.5j13n
- 摘要:
- ely sample size, sex ratio, and timing of sampling) on the estimation of allele frequencies and its potential downstream impact on the estimation of gene
Data from: Optimizing the trade-off between spatial and genetic sampling efforts in patchy populations: towards a better assessment
- 负责人:
- DOI:
- doi:10.5061/dryad.490p9
- 摘要:
- sampling scheme (PSS) is usually performed, so that a large number of genotypes can be used to compute pairwise genetic distances on the basis of alleli
Data from: The challenge of accurately documenting bee species richness in agroecosystems: bee diversity in eastern apple orchards
- 负责人:
- 关键词:
- sampling agroecosystem apple orchard bee diversity biodiversity ecosystem function pollination services
- DOI:
- doi:10.5061/dryad.6cr82
- 摘要:
- ween species richness and sampling effort, orchard size, and percent agriculture in the surrounding landscape. We performed more than 190 h of sampling, collecting 11,219