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Table 2 Variables used in describing habitat in Augustów Forest featuring nesting stands for white-tailed eagles and black storks

From: Nest-site selection by the white-tailed eagle and black stork – implications for conservation practice

Parameter

Place of measurement

Value (rank/unit)

Stand age

Nesting-tree stands & randomly-selected stands

year

Stand species (Main)

 

Site type

oligotrophic (1); mesotrophic (2); eutrophic (3)

Humidity

mesic (1); wet (2); bog (3)

Cover of canopy

Nesting-tree circular study plots & random study plots

successive 10% steps

Cover of shrub and undergrowth layers

successive 10% steps

Distance to neighbors (average from nesting/randomly-selected tree)

m

No. of neighbours (Number of trees in a 15-m radius)

n

Neighbour DBH (average DBH of neighbour trees)

cm

Neighbour height (average height of neighbour trees)

m