567 datasets found

Biologic data have been expressed in abundance (numbers or density values (nbr/km²)) and always required to be log-transformed using a log10(x+1) transformation. Abundance mean...

Abundances were recoded in term of presence-absence. Geostatistical interpolation : the spatial variation of biological data were analysed using GENSTAT (GENSTAT 7 Committee,...

Species habitat occupation, observed during the first quarter IBTS from 1980 to 2010, has been expressed as rare, occasional, frequent, recurrent depending on density levels and...

Species habitat occupation, observed during the third quarter IBTS from 1980 to 2010, has been expressed as rare, occasional, frequent, recurrent depending on density levels and...

Species habitat occupation has been expressed as rare, occasional, frequent, recurrent depending on density levels and variability over time.

Due to data paucity, the interpolated maps were computed using all the data available over three periods : 1980-1990, 1991-2000 and 2001-2010. Biologic data have been expressed...

Species habitat occupation, observed during the third quarter IBTS from 1980 to 2010, has been expressed as rare, occasional, frequent, recurrent depending on density levels and...