筛选
科学数据
统计数据
共检索到6409条 ,权限内显示50条;
Data from: Maternal investment increases with altitude in a frog on the Tibetan plateau
- 负责人：
- DOI：
- doi:10.5061/dryad.6v0c1
- 摘要：
- Reproducing females can allocate energy between the production of eggs of different size or number, both of which can strongly influence fitness
Sub-indexes of crop and livestock production
- 负责人：
- 关键词：
- DOI：
- doi:10.25318/3210028001-eng
- 摘要：
- p and livestock production (12 items: Total index;Total crops;Other crops;Grains; ...); Sub-indexes of crop and livestock production (2 items: 1971=100;1981=100).
Data from: Facultative use of thelytokous parthenogenesis for queen production in the polyandrous ant Cataglyphis cursor
- 负责人：
- 关键词：
- Cataglyphis cursor;Parthenogenesis;social insect;polyandry;Evolution of Sex;Microsatellite data
- DOI：
- doi:10.5061/dryad.5488t
- 摘要：
- of her genes by producing new queens (gynes) asexually while simultaneously maintaining a genetically diverse workforce via the sexual production
Data from: Fine root dynamics in lodgepole pine and white spruce stands along productivity gradients in reclaimed oil sands sites
- 负责人：
- 关键词：
- DOI：
- doi:10.5061/dryad.m1s46
- 摘要：
- equivalent to that existed before the disturbance. Re-establishment of forest cover will be affected by the production and turnover rate of fine roots. Howeve
Agricultural Total Factor Productivity (TFP), 2000-2016
- 负责人：
- IFPRI-Data;;International Food Policy Research Institue (IFPRI)
- 关键词：
- DOI：
- doi:10.7910/dvn/pjdgtj
- 摘要：
- Increasing the efficiency of agricultural production\u2014getting more output from the same amount of resources\u2014is critical for impro
Data from: Effects of climate on reproductive investment in a masting species: assessment of climatic predictors and underlying mechanisms
- 负责人：
- DOI：
- doi:10.5061/dryad.h29r7
- 摘要：
- climatic predictor, we tested for a potential mechanism by which climate might directly influence seed cone production independent of benefits via synchro
Feasible Extraction of Wheat Residues in the Western Cape
- 负责人：
- South African Environmental Observation Network
- 关键词：
- biomass potential agriculture residue wheat Agriculture Commercial crop system Energy Bioenergy
- DOI：
- doi:10.15493/bea.data.10000072
- 摘要：
- applied to recent average (10 year) wheat production in the province, derived from Department of Agriculture Annual Statistics. * Residue production
Data from: Unveiling the optimal parameters for cellulolytic characteristics of Talaromyces verruculosus SGMNPf3 and its secretory enzymes
- 负责人：
- DOI：
- doi:10.5061/dryad.64715
- 摘要：
- : The high individual cellulase activities, better cellulase production on natural substrates and apparent absence of end-product inhibition ar
Data from: Cross-fostering eggs reveals that female collared flycatchers adjust clutch sex ratios according to parental ability to invest
- 负责人：
- Krist, Milo?
- 关键词：
- Sexual Selection Behavior/Social Evolution Birds Population Ecology Sex Allocation Egg Size Parental Investment Trivers-Willard model Extra-pair Paternity Maternal Effects
- DOI：
- doi:10.5061/dryad.pt384
- 摘要：
- ; in such cases, parents able to produce offspring in above-average condition are predicted to produce sons, whereas parents unable to produce offspr
Data from: Maternal condition and previous reproduction interact to affect offspring sex in a wild mammal
- 负责人：
- 关键词：
- DOI：
- doi:10.5061/dryad.q7c24
- 摘要：
- ferent fitness consequences for sons and daughters. In polygynous and dimorphic species, mothers in good condition should preferentially produce sons
