无意中发现的还颇有趣的说 大意是说Niagara Escarpmen(是哪里呀?)的峭壁是陆生蜗牛很好的栖地 研究发现攀岩运动对於蜗牛族群密度 物种丰富度都有负面影响 因此在蜗牛保育计画中应涵盖峭壁区域 在台湾北部的天然岩场上好像都没看过蜗牛吧 倒是有看过壁虎蛋在裂隙中 --------------------------------------------------------------------------- Effects of Rock Climbing on the Land Snail Community of the Niagara Escarpment in Southern Ontario, Canada Authors: McMillan, Michele A. Nekola, Jeffrey C. Larson, Douglas W. Source: Conservation Biology; Apr2003, Vol. 17 Issue 2, p616, 6p The cliffs of the Niagara Escarpment provide habitat for extremely diverse communities of land snails that may be at risk as a result of recreational rock climbing. We examined the effects of rock climbing on the density, richness, diversity, and community composition of snails on the Niagara Escarpment in southern Ontario, Canada. We sampled from randomly selected climbed and unclimbed sections of cliffs on the plateau (cliff edge), cliff face, and talus (cliff base). Snail density, richness, and diversity were lower along climbing routes than in unclimbed areas, and community composition differed between climbed and unclimbed samples. These results suggest that rock climbing has significant negative effects on all aspects of the snail community on cliffs; therefore, we recommend the inclusion of gastropods in conservation plans for protected areas containing cliffs. --

※ 发信站: 批踢踢实业坊(ptt.cc) ◆ From: 140.112.58.74 ※ 编辑: SYH 来自: 140.112.58.74 (05/31 15:58)