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共检索到163条 ,权限内显示50条;
GBIF Occurrence Download
- 负责人：
- DOI：
- doi:10.15468/dl.ddyzm9
- 摘要：
- . Observation records, 1900-2014. 1 records from Provincial Museum of Alberta, Edmonton, AB, Canada. Birds (Aves). 1 records from Oiseaux nicheurs de France
GBIF Occurrence Download
- 负责人：
- DOI：
- doi:10.15468/dl.cgvrw2
- 摘要：
- Questagame weekly feed. 310 records from UCT: Southern African Reptile Conservation Assessment (1910-2009). 8320 records from Large herbivores
GBIF Occurrence Download
- 负责人：
- DOI：
- doi:10.15468/dl.la47uj
- 摘要：
- by ARCOS in Mukura landscape for year 2016. 618 records from UCT: Southern African Reptile Conservation Assessment (1910-2009). 305 records from Data from
GBIF Occurrence Download
- 负责人：
- DOI：
- doi:10.15468/dl.or68oo
- 摘要：
- HasGeospatialIssue: false. The dataset includes 1368 records from 18 constituent datasets: 4 records from SAFRING: Historical Bird Ringing Records (2005-2009). 12
GBIF Occurrence Download
- 负责人：
- DOI：
- doi:10.15468/dl.cgjmqi
- 摘要：
- 16740 records from 31 constituent datasets: 5 records from National Biodiversity Data Bank. Observation records, 1900-2014. 7933 records from
Data from: Tree species richness increases ecosystem carbon storage in subtropical forests
- 负责人：
- DOI：
- doi:10.5061/dryad.t9t0sc4
- 摘要：
- Forest ecosystems are an integral component of the global carbon cycle as they take up and release large amounts of C in short time (C flux) or accumulate it over longer time (C stock). However, there remains uncertainty about whether and in which direction C fluxes and in particular C stocks may differ between forests of high vs. low species richness. Based on a comprehensive dataset derived from field-based measurements, we tested the effect of species richness (3–20 tree species) and stand age (22–116 years) on six compartments of above- and belowground C stocks and four components of C fluxes in subtropical forests in south-east China. Across forest stands, total C stock was 149 ± 12 Mg ha-1 with richness explaining 28.5% and age explaining 29.4% of variation in this measure. Species-rich stands had higher C stocks and fluxes than stands with low richness; and, in addition, old stands had higher C stocks than young ones. Overall, for each additional tree species the total C stock increased by 6.4%. Our results provide comprehensive evidence for diversity-mediated above- and belowground C sequestration in species-rich subtropical forests in south-east China. Therefore, afforestation policies in this region and elsewhere should consider a change from the current focus on monocultures to multi-species plantations to increase C fixation and thus slow increasing atmospheric CO2 concentrations and global warming.
GBIF Occurrence Download
- 负责人：
- DOI：
- doi:10.15468/dl.a7tcpy
- 摘要：
- HasGeospatialIssue: false. The dataset includes 11844 records from 19 constituent datasets: 535 records from SAFRING: Historical Bird Ringing Records (2005-2009). 15
GBIF Occurrence Download
- 负责人：
- DOI：
- doi:10.15468/dl.n3nydq
- 摘要：
- Observations. 1 records from SBMNH Vertebrate Zoology. 173 records from National Biodiversity Data Bank. Observation records, 1900-2014. 22 records from WFVZ
Data from: Diversity of bat astroviruses in Lao PDR and Cambodia
- 负责人：
- DOI：
- doi:10.5061/dryad.06rd3fm
- 摘要：
- Astroviruses are known to infect humans and a wide range of animal species, and can cause gastroenteritis in their hosts. Recent studies have reported astroviruses in bats in Europe and in several locations in China. We sampled 1876 bats from 17 genera at 45 sites from 14 and 13 provinces in Cambodia and Lao PDR respectively, and tested them for astroviruses. Our study revealed a high diversity of astroviruses among various Yangochiroptera and Yinpterochiroptera bats. Evidence for varying degrees of host restriction for astroviruses in bats was found. Furthermore, additional Pteropodid hosts were detected. The astroviruses formed distinct phylogenetic clusters within the genus Mamastrovirus, most closely related to other known bat astroviruses. The astrovirus sequences were found to be highly saturated indicating that phylogenetic relationships should be interpreted carefully. An astrovirus clustering in a group with other viruses from diverse hosts, including from ungulates and porcupines, was found in a Rousettus bat. These findings suggest that diverse astroviruses can be found in many species of mammals, including bats.
Data from: Female American black bears do not alter space use or movements to reduce infanticide risk
- 负责人：
- DOI：
- doi:10.5061/dryad.1320p
- 摘要：
- Infanticide occurs in a variety of animal species and infanticide risk has large implications for the evolution of behavior. Further, the sex hypothesis of sexual segregation predicts that for species in which infanticide occurs, females with dependent young will avoid males to reduce risk of sexually-selected infanticide. Infanticide risk-avoidance behavior has been studied primarily in social species, but also occurs in some solitary species. We used generalized linear mixed models to determine if space use and movements of female American black bears (Ursus americanus) during the breeding season were consistent with the sex hypothesis of sexual segregation in the Upper Peninsula of Michigan, USA. Space use and movements of female black bears (n = 16) were not consistent with avoidance behavior to reduce sexually-selected infanticide risk. Females with cubs occupied core areas (mean = 4.64 km2, standard error [SE] = 1.28) and home ranges (mean = 19.46 km2, SE = 5.10) of similar size to females without cubs (core area [mean = 4.11 km2, SE = 0.59]; home range [mean = 16.07 km2, SE = 2.26]), and those core areas and home ranges were not in areas with lesser relative probability of male use. Additionally, females with cubs did not reduce movements during times of day when male movements were greatest. As female bears do avoid potentially infanticidal males in populations with greater levels of infanticide, female black bears may exhibit variation in avoidance behavior based on the occurrence of infanticide.
