对三个两栖动物种群进行长达四分之一个世纪的时间序列分析。
Analysis of three amphibian populations with quarter-century long time-series.
作者信息
Meyer A H, Schimidt B R, Grossenbacher K
机构信息
Institut für Umweltwissenschaften, University of Zürich, Switzerland.
出版信息
Proc Biol Sci. 1998 Mar 22;265(1395):523-8. doi: 10.1098/rspb.1998.0326.
Amphibians are in decline in many parts of the world. Long tme-series of amphibian populations are necessary to distinguish declines from the often strong fluctuations observed in natural populations. Time-series may also help to understand the causes of these declines. We analysed 23-28-year long time-series of the frog Rana temporaria. Only one of the three studied populations showed a negative trend which was probably caused by the introduction of fish. Two populations appeared to be density regulated. Rainfall had no obvious effect on the population fluctuations. Whereas long-term studies of amphibian populations are valuable to document population declines, most are too short to reveal those factors that govern population dynamics or cause amphibian populations to decline.
两栖动物在世界许多地区数量都在减少。需要长期的两栖动物种群时间序列数据，以区分数量减少与自然种群中常见的强烈波动。时间序列数据也有助于了解这些数量减少的原因。我们分析了23至28年的欧洲林蛙时间序列数据。在研究的三个种群中，只有一个呈现下降趋势，这可能是由鱼类引入导致的。另外两个种群似乎受到密度调节。降雨对种群波动没有明显影响。虽然对两栖动物种群的长期研究对于记录种群数量减少很有价值，但大多数研究时间太短，无法揭示那些控制种群动态或导致两栖动物种群数量减少的因素。
Zotero 插件