新型生態群落的出現加劇了物種的滅絕
作者:
小柯機器人發布時間:2020/10/11 21:49:28
澳大利亞昆士蘭大學John M. Pandolfi等研究人員的一項最新發現表明,新型生態群落的出現加劇了物種的滅絕。該項研究成果發表在2020年10月9日出版的《科學》雜誌上。
研究人員開發了一種強大的方法來檢測新型群落,檢查新興模式並量化在與新型群落之間來回過渡的當地群體變化的可能性。使用新生代海洋浮遊生物群落的全球數據集,研究人員發現,向新的群落過渡過程中局部滅絕、起源和遷徙的可能性比背景群落變化的可能性增加了兩到四倍。
儘管很罕見,但新型群落轉變為另一種新型狀態的機率是偶然的五倍。對於擁有100,000年歷史的海洋浮遊生物而言,新的群落對進一步的滅絕和重大的群落變化非常敏感。
據悉,環境的變化正在將生態組合轉變為新的形態,從而形成了新的群落。
附:英文原文
Title: Increased extinction in the emergence of novel ecological communities
Author: John M. Pandolfi, Timothy L. Staples, Wolfgang Kiessling
Issue&Volume: 2020/10/09
Abstract: Environmental change is transforming ecological assemblages into new configurations, resulting in novel communities. We developed a robust methodology to detect novel communities, examine patterns of emergence, and quantify probabilities of local demographic turnover in transitions to and from novel communities. Using a global dataset of Cenozoic marine plankton communities, we found that the probability of local extinction, origination, and emigration during transitions to a novel community increased two to four times that of background community changes. Although rare, novel communities were five times more likely than chance to shift into another novel state. For marine plankton communities at a 100,000-year time grain, novel communities were sensitive to further extinctions and substantial community change.
DOI: 10.1126/science.abb3996
Source: https://science.sciencemag.org/content/370/6513/220
Science:《科學》,創刊於1880年。隸屬於美國科學促進會,最新IF:41.037