Concentration of Rare Epiphytic Lichens Along Large Streams in a Mountainous Watershed in Oregon, U.S.A

摘要: Abstract We studied epiphytic macrolichen communities and occurrences of rare species along the transition from upland to riparian forests on a range stream sizes (intermittent, non-fish-bearing perennial, fish-bearing but less than 5th order, streams larger order), based 92, 0.38 ha plots in McKenzie River watershed central Cascades Oregon. The uplands higher areas large is expressed decreasing elevation increasing representation hardwoods. Upland stands were almost 100% conifers, averaging 49 m2/ha stand basal area, 48% conifers fourth order below, finally 30% streams. Stand hardwoods averaged near zero uplands, an average 11 One NMS ordination axis described this gradient communities, expressing 72% variation community composition. Epiphytic lichen...