01887nas a2200193   4500008004100000245008200041210006900123300001200192490000800204520129300212653002501505653001501530653001401545653001301559653001101572100002101583700001901604856007001623       2000                        eng d00aWinter Dispersal of Bryophyte Fragments in the Adirondack Mountains, New York0 aWinter Dispersal of Bryophyte Fragments in the Adirondack Mounta  a592-6000 v1033 a<p>Bryophyte and vascular plant fragments were obtained from late-spring snowbeds at three localities in the Adirondack Mountains, New York. Fragment diversity in samples at alpine and krummholz sites far exceeded that at a forested site, and the diversity of bryophyte species represented by the fragments surpassed that of vascular plants. Approximately 82% of all bryophyte fragments found were in sufficiently good condition to permit identification to species or genus. Statistically significant differences in fragment species diversity occurred between the alpine sites and the forested site, but not between the two alpine sites. The consistent presence of liverworts in the alpine samples indicates that their absence from late-glacial sediments may be due more to taphonomy than either an absence of hepatics from the late-glacial flora or an inability of hepatics to disperse by gametophyte fragments. We detected only a few allochthonous fragments in our samples, and these were of bryophyte species characteristic of lower elevation balsam fir and red spruce-balsam fir forests. In alpine tundra, winter-dispersed fragments of bryophytes may serve as vegetative diaspores, providing a mechanism for rapid establishment of new populations every year following snow melt.</p>
10aAdirondack Mountains10abryophytes10aDispersal10aNew York10awinter1 aMcDaniel, S., F.1 aMiller, N., G.  uhttp://dx.doi.org/10.1639/0007-2745(2000)103[0592:WDOBFI]2.0.CO;2