02624nas a2200217 4500008004100000245009800041210006900139300001200208490000800220520192100228653003602149653003902185653001302224653001502237653001002252653001102262653005102273653001302324100001902337856005002356 2009 eng d00aLichens and Bryophytes of the Alpine and Subalpine Zones of Katahdin, Maine, III: Bryophytes.0 aLichens and Bryophytes of the Alpine and Subalpine Zones of Kata a704-7480 v1123 a

Field studies on the east side of Mount Katahdin, Maine, from 2001 to 2004, and an appraisal of published and unpublished Katahdin records from previous work documented 203 different bryophytes (131 mosses and 72 liverworts) for subalpine conifer forest, alpine tundra and cirque walls, and krummholz in between. This work represents the only recent investigation of a high altitude bryoflora in the mountains of the northeastern United States. Two mosses (Hygrohypnum smithii, Pohlia tundrae) are new to this region, and six others, including Neckera oligocarpa, are new records for Maine. Investigations of Grimmia (4 spp.), Cynodontium (2 spp.) and Kiaeria (2 spp.) clarified the application of taxonomic concepts for these mosses relative to previous published work. In conjunction with parallel studies of Katahdin lichens, eight habitats were specified for the study area. These habitats were largely the same places as those recognized for lichens. The eight habitats differed in the number of Arctic mosses and in unique occurrences of various mosses and liverworts. Mean Arctic-boreal-cool temperate values, introduced as an analytical tool to evaluate the distributional affinities of Kathadin lichens, were calculated for bryophytes for seven of eight habitats. The mean for each habitat class was well predicted by a multiple regression equation, with altitude, solar gain and snowpack persistence, but not substratum, as independent variables. Upper and lower altitutinal limits of bryophyte species occurrence were determined. The documented presence of Katahdin alpine bryophytes in four other mountain areas in northeastern United States and adjacent Québec, Canada, showed fewer of them in western areas (the high Adirondack Mountains, New York and Mt. Mansfield, Vermont), a possible outcome of increasing oceanic conditions eastward.

10aAlpine and subalpine bryofloras10abryophyte ecology and distribution10aKatahdin10aliverworts10aMaine10amosses10anortheastern United States and adjacent Canada10asnow bed1 aMiller, N., G. uhttp://dx.doi.org/10.1639/0007-2745-112.4.70402010nas a2200241 4500008004100000245006700041210006000108300001000168490000800178520136400186653001501550653001501565653001501580653001801595653001101613653001601624653001701640653001701657653001501674653002201689100001901711856003801730 2005 eng d00aThe Bryoflora of Mt. Everett, Taconic Mountains, Massachusetts0 aBryoflora of Mt Everett Taconic Mountains Massachusetts a34-510 v1073 a

An inventory of the bryophyte flora of Mt. Everett and vicinity, southwestern Massachusetts, a 795 m mountain with an unusual dwarf Pinus rigida (pitch pine) summit forest, produced records for 109 mosses and 45 liverworts (153 species and one variety). The summit pine vegetation contained some bryophytes known to occur in lowland pitch pine forest elsewhere in the northeastern United States, but no species unique to this vegetation type. Some species more characteristic of higher elevation mountains with red spruce-balsam fir forest in the northeastern United States were present in the summit and subsummit areas of Mt. Everett, especially the latter. These azonal northern bryophytes may be descendents of populations of species that were more abundant in the past. Species richness on the mountain increased from summit to lowland, and the subsummit area contained more species than the summit forest area. Substantial differences exist between the bryofloras of Mt. Everett and Mt. Greylock, Massachusetts, 70 km to the north, reflecting edaphic and climatic dissimilarities between the two areas. Bryum flaccidum, Plagiomnium medium, Pseudotaxiphyllum distichaceum, and Sphagnum quinquefarium, on the basis of collections from Mt. Everett and vicinity, are added to the flora of Massachusetts.

10aBerkshires10abryophytes10aliverworts10aMassachusetts10amosses10aMt. Everett10aMt. Greylock10apine barrens10apitch pine10aTaconic Mountains1 aMiller, N., G. uhttp://dx.doi.org/10.3119/04-13.1