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共检索到4791条 ,权限内显示50条;
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Data from: Geographic ranges of genera and their constituent species: structure, evolutionary dynamics, and extinction resistance
- 负责人:
- 关键词:
- DOI:
- doi:10.5061/dryad.nh6hm
- 摘要:
- they contain, considering variation among coeval genera and changes within genera over time. Measuring range size as the maximal distance, or extent, bet
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Data from: Range expansion compromises adaptive evolution in an outcrossing plant
- 负责人:
- DOI:
- doi:10.5061/dryad.74631
- 摘要:
- the efficacy of natural selection and patterns of non-synonymous polymorphism in different parts of a species’ range. Recent theory predicts both an accumulation
![](http://agri.nais.net.cn/resources/front/images/source_91.jpg)
Field Crop Boundaries
- 负责人:
- South African Environmental Observation Network
- 关键词:
- biomass potential agriculture crop crop cultivation extent Agriculture Commercial cropping systems Socio-economic Economic activity Land Transformation
- DOI:
- doi:10.15493/bea.data.10000089
- 摘要:
- "Data on field crop extent and type of cultivation was obtained from DAFF for the whole of South Africa. This was reviewed for consiste
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Data from: Ability to modulate birdsong across social contexts develops without imitative social learning
- 负责人:
- DOI:
- doi:10.5061/dryad.r5d54
- 摘要:
- on the social context, but the degree to which this modulation requires imitative social learning remains unknown. We found that zebra finches that were not exposed
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Data from: Body length of bony fishes was not a selective factor during the biggest mass extinction of all time
- 负责人:
- DOI:
- doi:10.5061/dryad.394hm
- 摘要:
- ial survival or extinction of taxa across the boundary. In the case of fishes, size did not determine which species survived and which went ext
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Data from: Challenges in the estimation of extinction from molecular phylogenies: a response to Beaulieu and O'Meara
- 负责人:
- DOI:
- doi:10.5061/dryad.d4841
- 摘要:
- Time-calibrated phylogenies that contain only living species have been widely used to study the dynamics of speciation and extinction. Concerns
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Data from: Population genomic diversity and structure at the discontinuous southern range of the Great Gray Owl in North America
- 负责人:
- DOI:
- doi:10.5061/dryad.1rn8pk0qm
- 摘要:
- tic diversity. The southern extent of the Great Gray Owl ( Strixnebulosa) range in North America is discontinuous, unlike their northern core range across the boreal forests
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Data from: Correlation of native and exotic species richness: a global meta-analysis finds no invasion paradox across scales
- 负责人:
- DOI:
- doi:10.5061/dryad.59kv753
- 摘要:
- eviously examined whether NERR is scale-dependent across multiple studies, and previous studies on NERR have not distinguished spatial grain and extent, which ma
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Data from: Are exotic plants more abundant in the introduced versus native range?
- 负责人:
- DOI:
- doi:10.5061/dryad.r7v91
- 摘要:
- in the introduced versus native range 1) across all species and 2) according to designated pest status in the introduced range. We predicted that if escape from
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Data from: Do large-seeded herbs have a small range size? The seed mass-distribution range trade-off hypothesis
- 负责人:
- 关键词:
- DOI:
- doi:10.5061/dryad.244sn
- 摘要:
- We aimed to introduce and test the “seed mass–distribution range trade-off” hypothesis, that is, that range size is negatively related to seed mass