作者
Steven J Price, Robert A Browne, Michael E Dorcas
发表日期
2012/1
期刊
Freshwater Biology
卷号
57
期号
1
页码范围
193-203
出版商
Blackwell Publishing Ltd
简介
1. Urbanisation represents a significant threat to semi‐aquatic amphibian populations, especially stream‐dwelling salamanders. Although studies of urbanisation effects on amphibians have been conducted, there is an urgent need to follow populations over longer time periods, account for imperfect detection and determine the response time to urbanisation. Consequently, we used a before‐after control‐impact (BACI) study design to estimate changes in abundances of larval and adult salamanders in streams affected by urbanisation.
2. From 2005 to 2009, we used standard sampling techniques to obtain a count of salamanders in 13 first‐order streams that underwent urbanisation of their catchments after the first year of sampling. Simultaneously, we counted salamanders in 17 streams that experienced no disturbance within stream catchments. Additionally, we measured environmental variables at each stream …
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SJ Price, RA Browne, ME Dorcas - Freshwater Biology, 2012