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共检索到268条 ,权限内显示50条;
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USA National Phenology Network (USA-NPN) Plant and Animal Phenology Data for the United States
- 负责人:
- 关键词:
- plants animals ground stations migratory routes\/rates species life history biosphere biota phenology
- DOI:
- doi:10.5063/f1rf5rz9
- 摘要:
- to collect and share phenology data. More information on the USA-NPN can be found at http://www.usanpn.org/about. As of January 1, 2013, the dataset conta
![](http://agri.nais.net.cn/resources/front/images/source_91.jpg)
Winter Rainfall Crops
- 负责人:
- South African Environmental Observation Network
- 关键词:
- biomass potential degraded land erosion barren rock Agriculture Commercial cropping systems Socio-economic Economic activity Land Transformation
- DOI:
- doi:10.15493/bea.data.10000088
- 摘要:
- e from Spot 5 satellite imagery of 2011 and 2012, as well as aerial photography of 2010. The low-level aerial survey of 2013 was conducted to observe crops
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2013 AAFC Crop Type Map of Canada
- 负责人:
- DOI:
- doi:10.5203/lwbin.aafc.2013.1
- 摘要:
- the process of generating annual crop type digital maps.Focusing on the Prairie Provinces in 2009 and 2010, a Decision Tree (DT) based methodology was applied
![](http://agri.nais.net.cn/resources/front/images/source_91.jpg)
Data from: Incidence of influenza A(H3N2) virus infections in Hong Kong in a longitudinal sero-epidemiological study, 2009-2015
- 负责人:
- DOI:
- doi:10.5061/dryad.7c93n5s
- 摘要:
- 2010; (2) Mar-Jun 2012; (3) Jul-Oct 2013; and (4) Jun-Jul 2014. Between 514 516 and 614 619 relevant pairs of sera were available for each epidemic
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Data from: Experimental defaunation of terrestrial mammalian herbivores alters tropical rain forest understory diversity
- 负责人:
- DOI:
- doi:10.5061/dryad.28v87
- 摘要:
- –100 cm tall were marked and identified within each of these plots and re-censused three times to record survival and recruitment. In the periods 2010
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Changes in anthropogenic influences on streams and rivers in the conterminous U.S. over the last 40 years, derived for 16 data themes
- 负责人:
- 关键词:
- DOI:
- doi:10.5066/f7xw4j1j
- 摘要:
- ), (2) agricultural production and livestock (1969-2012), (3) land in the Conservation Reserve Program (1986-2014), (4) dams and reservoirs (1972-2013), (5) housing unit density
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Eurobarometer 73.1, januar-februar 2010;;Eurobarometer 73.1, January-February 2010
- 负责人:
- 关键词:
- Videnskab og teknologi Science and technology Videnskab og teknologi: Bioteknologi Science and technology: Biotechnology Beslutningsgrundlag Biobr?ndstof EU-st?tte Holdning til genetisk modificerede f?devarer Holdning til videnskab Informationskilde
- DOI:
- doi:10.5279/dk-sa-dda-25191
- 摘要:
- P? foranledning af EU-kommissionen gennemf?rtes "Eurobarometer 73.1, januar-februar 2010". I unders?gelsen sp?rges der ti
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Horizontal and Vertical Movements of Atlantic cod and European plaice in the North Sea and English Channel from 1996 to 2010 Derived from
- 负责人:
- Righton, David;;Griffiths, Christopher;;Blackwell, Paul;;Patterson, Toby;;Wright, Serena;;Hunter, Ewan;;Metcalfe, Julian;;Bendall, Victoria
- 关键词:
- Fish Fish behaviour
- DOI:
- doi:10.14466/cefasdatahub.54
- 摘要:
- (Pleuronectes platessa) in the North Sea and English Channel. Tags were deployed throughout the time period 1996 \u2013 2010. The dataset includes 107 individual fish ea
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Data from: Changes in data sharing and data reuse practices and perceptions among scientists worldwide
- 负责人:
- DOI:
- doi:10.5061/dryad.1ph92
- 摘要:
- arch scientists as they compare to the 2009/2010 baseline study, and to examine differences in practices and perceptions across age groups, geographic regions
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Data from: Genetic wealth, population health: major histocompatibility complex variation in captive and wild ring-tailed lemurs (Lemur catta)
- 负责人:
- Grogan, Kathleen E.
- 关键词:
- MHC-DRB genetic diversity inbreeding strepsirrhine primate immunogenetics conservation genetics
- DOI:
- doi:10.5061/dryad.bn7h0
- 摘要:
- vely “open,” wild population (n = 180) derived from Bezà Mahafaly Special Reserve, Madagascar (2003–2013) and a “closed,” captive population (n = 121