Oxen treading wheat, , Punjab, Pakistan, ca.1890

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关键词：

agriculture farming Ox teams Wheat

DOI：

doi:10.25549/impa-c123-78896

摘要：

\u201CTreading the wheat.\u201D Exterior view of an oxen being led over harvested wheat in a field as a form of threshing. ? This is one of a series

Data from: Distance, flow, and PCR inhibition: eDNA dynamics in two headwater steams

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关键词：

Environmental DNA;Salvelinus fontinalis;stream;Fish;qPCR;eDNA;lotic

DOI：

doi:10.5061/dryad.7j3g5

摘要：

of aquatic eDNA over a range of environmental conditions. DNA concentrations in streams and rivers will depend not only on the equilibrium between DNA ente

Cart and Outspan, Tumutumu, Kenya, September 1926

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关键词：

carts transportation Ox teams

DOI：

doi:10.25549/impa-c123-79742

摘要：

"European Cart and Outspan". External view with livestock chained together to pull a wooden cart loaded with materials. Tumutumu was established

Compilation of soil chemistry data for the northeastern United States and southeastern Canada

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关键词：

Forest ecosystem Mineral horizon Nitrification Nitrogen mineralization Organic horizon Soil chemistry

DOI：

doi:10.5063/aa/nerc.13.5

摘要：

d by individual investigators and research teams.

Data from: Crowds replicate performance of scientific experts scoring phylogenetic matrices of phenotypes

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关键词：

Crowdsourcing;morphology;diatoms;Bat;MorphoBank;sea anemones;phylogenetics;citizen science;lilies;phenomics;marine shrimp;catfish

DOI：

doi:10.5061/dryad.766cp

摘要：

teams alone. The quality of work by non-expert crowds is, however, often questioned and little data has been collected on how such crowds perform