Drivers of black grouse trends in the French Alps
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下载链接:
https://datadryad.org/dataset/doi:10.5061/dryad.w9ghx3fnp
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资源简介:
This dataset is composed of three R files: One entitled
"BGcounts" that contains an array named "count",
composed of counts of black grouse males during lek season conducted on
reference sites monitored by a french organisation called "OGM"
(https://www.observatoire-galliformes-montagne.com/). The network is
composed of 47 counting sites (raws of the dataset), and counts started on
various dates on each site (from 1980's to 1990's). Columns (40)
are years from 1979 to 2018. Finally, during the same lek
season, up to 3 replicates per site have been done, they are contained by
the third dimension of the array. Details of the method and sites can be
found in the related article accepted in Diversity and Distribution. Note
that because black grouse is a sensitive species in France, data have been
randomized, hence site numbers on this dataset do not reflect OGM's
original site numbers. A second entitled
"elevation_surface" containing scaled (x=x-mean/sd) values of
sites elevation (column altitude) and surface. The last one named
"covariates" with covariates values, harvested number of birds
on reference sites, cable density, snow cover (50% and 100% of bare
ground), length of vegetative season, starting date of vegetative season
and harvest density. Refer to the Readme file to find details about
scaling and years provided.
提供机构:
Dryad
创建时间:
2021-01-19



