筛选
科学数据
统计数据
共检索到20488条 ,权限内显示50条;
![](http://agri.nais.net.cn/resources/front/images/source_91.jpg)
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:
- ch of its constituent species. We therefore focus on a second measure of range, the mean squared distance, or dispersion, of occurrences from the geographic centroid
![](http://agri.nais.net.cn/resources/front/images/source_91.jpg)
Data from: Trans-species predictors of tree leaf mass
- 负责人:
- 关键词:
- DOI:
- doi:10.5061/dryad.mt40bc2
- 摘要:
- is challenging because leaf mass varies both within and between tree species and at different locations and points in time. Typically, models for estimating tree
![](http://agri.nais.net.cn/resources/front/images/source_91.jpg)
Data from: Are vocal characteristics related to leadership patterns in mixed-species bird flocks?
- 负责人:
- DOI:
- doi:10.5061/dryad.49f68p3
- 摘要:
- tedly, leaders’ calls were less similar to each other than occasional species. The greater amount of information available and the greater variety of tha
![](http://agri.nais.net.cn/resources/front/images/source_91.jpg)
Data from: Linkage of plant trait space to successional age and species richness in boreal forest understory vegetation
- 负责人:
- DOI:
- doi:10.5061/dryad.373mg
- 摘要:
- sured specific leaf area (SLA) of each of ten individuals of each plant species present. Using a variance decomposition method, we partitioned the total
![](http://agri.nais.net.cn/resources/front/images/source_91.jpg)
Data from: Raising the bar: recovery ambition for species at risk in canada and the US
- 负责人:
- DOI:
- doi:10.5061/dryad.qk878ms
- 摘要:
- A; (3) recovery goals for endangered species had higher ambition than threatened species under ESA and SARA, and; (4) no recovery goal aimed to restore populations
![](http://agri.nais.net.cn/resources/front/images/source_91.jpg)
Data from: Height and clonality traits determine plant community responses to fertilization
- 负责人:
- DOI:
- doi:10.5061/dryad.6rp18
- 摘要:
- clarify the mechanisms whereby fertilization decreases grassland plant species richness and suggest that efforts to prevent the loss of species under
![](http://agri.nais.net.cn/resources/front/images/source_91.jpg)
Data from: Variation in plant functional traits is best explained by the species identity: stability of trait based species ranking across mea
- 负责人:
- DOI:
- doi:10.5061/dryad.v870905
- 摘要:
- ferent environmental conditions. If the environment affects traits it is assumed that species react in a similar direction and conserve the functional
![](http://agri.nais.net.cn/resources/front/images/source_91.jpg)
Data from: Model-based species delimitation: are coalescent species reproductively isolated?
- 负责人:
- DOI:
- doi:10.5061/dryad.fk869rf
- 摘要:
- A large and growing fraction of systematists define species as independently evolving lineages that may be recognized by analyzing
![](http://agri.nais.net.cn/resources/front/images/source_91.jpg)
Data from: Habitat specialization of birds in the Czech Republic: comparison of objective measures with expert opinion
- 负责人:
- DOI:
- doi:10.5061/dryad.8733
- 摘要:
- CAPSULE: Expert-based classification of bird species as habitat specialists and as generalists agrees with objective measures of species
![](http://agri.nais.net.cn/resources/front/images/source_91.jpg)
Data from: A synopsis of the saddle fungi (Helvella: Ascomycota) in Europe – species delimitation, taxonomy and typification
- 负责人:
- DOI:
- doi:10.5061/dryad.7tv20
- 摘要:
- ng the pertinent species. We discuss typification issues and identify molecular characteristics for 55 European Helvella species, designate neo- and epitypes for 30