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宜蘭的蛇類相及其海拔梯度多樣性

Ophidian Fauna and Species Richness along an Elevational Gradient in Yilan

摘要


我們整理了前人的動物相關調查報告與文獻紀錄,及本研究室自2003年起,於宜蘭各地進行調查時所紀錄的蛇類海拔高度。結果顯示,宜蘭地區共計有蛇類8科39種。在假設蛇類出現的最高與最低點位海拔間,為連續分布的前提下,宜蘭地區沿海拔梯度的蛇類物種豐度(species richness)變化,於海拔400-600及1,000-1,200公尺之間的兩個區段,呈現相對較高的物種多樣性狀況,蛇的物種組成,則在平原與淺山的交會帶(海拔200公尺左右)及山區雲霧帶(海拔1,400公尺左右)有明顯的種類轉換現象。

並列摘要


Herein, we review available fauna inventory literature regarding Yilan, and updated on the elevational distribution data of snake species recorded in this area since 2003. Thirty-nine snake species, from 8 families were recorded in Yilan. We presumed that the snake species had a continuous distribution between the highest and lowest elevation localities. The relative higher species richness regions occurred at 400-600 and 1,000-1,200 m above sea level. The two snake species composition transformation regions were the contact zone of the Lanyang Plain to the low elevation montane (ca. 200 m in elevation) and subalpine prevalent cloud belt (ca. 1,400 m in elevation) regions.

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