Point counts of birds in bottomland hardwood forests of the Mississippi Alluvial valley: duration, minimum sample size, and points versus visits
U.S. Dept. of Agriculture, Forest Service, Southern Forest Experiment Station, 1993 - Nature - 21 pages
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10-minute counts 20-minute point counts 200 Central 200 Habitat 200 Locality Southern 200 Northern 5-minute 9 200 Locality ANOVA bird species recorded birds and species birds or species birds recorded bottomland hardwood forests Delta Experimental Forest distance category duration of point factor level means function of number individual birds individuals or species Locality Southern 0.00 lower MAV lower Mississippi Alluvial mean cumulative number Mesic habitat minimum sample sizes Mississippi Alluvial Valley Monitoring Working Group National Wildlife Refuge Neter and Wasserman Northern cardinal null hypothesis number of birds number of individuals number of points number of species number of visits percent percentage point count duration points and number points and visits points visited power method prothonotary warbler recorded during point red-eyed vireo SAS Institute six points six visits species pool Stoneville Tensas River throughout the lower tion total number total species U.S. Department variables Wasserman 1974 west Tennessee bottomlands Wood thrush