摘要
Several species of vespertilionid bat gather at underground sites in temperate zones during late summer and early autumn for an activity called swarming. Up to many hundreds of bats may arrive and depart during a night. Bat activity was recorded automatically with a frequency division logging system at a swarming site in south-east England for 415 nights between 1997 and 2001. In all 5 years, activity was highest between the beginning of August and the end of October (the swarming period), with a peak in September. Activity varied markedly from night to night and was affected by rainfall (which significantly suppressed swarming activity), and residual maximum ambient temperature (with which activity was positively correlated). Moon phase had no detectable influence on swarming activity. Activity was low in the first few hours after sunset of each night during the swarming period indicating that few bats emerged and that there was low daytime occupancy of the site. Activity increased to a peak between 6 and 7 h post-sunset consistent with a large number of bats arriving after the first evening foraging bout. Activity then decreased gradually up to dawn as these bats departed again. Logged activity was positively correlated with the number of bats caught by harp-trap, confirming that loggers are a reliable alternative to catching when monitoring a swarming site. .overlined { text-decoration: overline; } .struck { text-decoration:line-through; } .underlined { text-decoration:underline; } .doubleUnderlined { text-decoration:underline;border-bottom:1px solid #000; } Enhanced Article (HTML) Get PDF (109K)Get PDF (109K) More content like thisFind more content: like this articleFind more content written by: K. N. Parsons G. Jones F. Greenaway All Authors
摘要译文
数种vespertilionid蝙蝠在夏末和初秋的地下网站在温带地区的一个活动叫做蜂拥聚集多达数百个蝙蝠可能到达，并在夜间离开蝙蝠活性自动记录使用频分记录系统在蜂拥的网站在英格兰东南部的415个晚上1997 2001In共5岁之间，活性最高八月的开始和十月（所述蜂拥期间）的端部之间，具有一个峰在九月活动显着变化，从晚上到夜间，并受降雨影响的（这显著抑制蜂拥活动），而剩余的最高环境温度（与活性呈正相关），月相对蜂拥而至的活动没有可检测到的影响活性低，在每个夜晚的日落之后的前几个小时期间蜂拥期间指示几拍出现，因此有站点的低白天占用活性升高到峰值6和7小时后日落一致之间具有大量蝙蝠的第一天晚上觅食回合后抵达活动然后逐渐下降至天明，因为这些蝙蝠离开againLogged活性蝙蝠抓住了竖琴陷阱的数量呈正相关，确认记录器是一个可靠的替代监测蜂拥网站竜verlined {文字修饰时，醒目：上划线; }竤车{文字修饰：线通过; }下划线{文字装饰：下划线; }竏oubleUnderlined {文字装饰：下划线;边境底：1px的固体＃000;}增强的文章（HTML）获取PDF（109K）获取PDF（109K）更多内容类似thisFind更多内容：像这样的articleFind更多的内容写的：KNParsons GJones FGreenaway所有的著者
K. N. Parsons[1,*]; G. Jones[1] and F. Greenaway[2];. Swarming activity of temperate zone microchiropteran bats: effects of season, time of night and weather conditions[J]. Journal of Zoology, 2003,261(3): 257-264