MacArthur was ingenious in collecting and examining subject data. Warbler Paper is always worth re-reading using this in mind. His ways of measuring vegetation density are fast and surprisingly responsible; They're explained in MacArthur and MacArthur 1961; MacArthur, et al. 1962; and MacArthur and Horn 1969. They all entail projections https://robert-macarthur-md66543.mdkblog.com/34635163/helping-the-others-realize-the-advantages-of-dr-macarthur-california