Zobrazeno 1 - 2
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pro vyhledávání: '"Don S. Rakstad"'
Publikováno v:
Forest Ecology and Management. 49:43-60
Probst, J.R., Rakstad, D.S. and Rugg, D.J., 1992. Breeding bird communities in regenerating and mature broadleaf forests in the USA Lake States. For. Ecol. M, anage., 49: 43-60. When Lake States aspen tree canopy is removed by clearcut harvest, bird
Publikováno v:
The Condor. 88:386-388
Knowledge of factors affecting song rates is important because biologists use song in estimating or monitoring bird populations. Perhaps for no other species have song censuses played such a major role in population assessment and management as for t