Environmental Impact Research Program. Avian Plot Methods. Section 6.3.3, US Army Corps of Engineers Wildlife Resources Management Manual

摘要

This report on avian plot methods is provided as Section 6.3.3 of the US Army Corps of Engineers Wildlife Resources Management Manual. The report is designed to assist the District or project biologist in the application of plot methods to estimate the density and diversity of bird populations for planning, management, and research purposes. Plot sampling in performed by a stationary observer who stands at each sampling point and records detections of birds in all directions during a fixed sampling period. The method is particularly suited to small or irregular study areas or where terrain is too rough for the use of transects. Plot methods can be used at any time of year. The report provides guidelines concerning plot establishment, sample size, survey timing and procedures, and interpretation of results, including and explanation and comparison of fixed plots and variable circular plots.