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Use of removal sampling to estimate abundance of larval salamanders (Salamandra salamandra) in streams


Schmidt, B R; Gschwend, G; Bachmann, J A; Dermond, P (2015). Use of removal sampling to estimate abundance of larval salamanders (Salamandra salamandra) in streams. Amphibia Reptilia, 36(1):87-92.

Abstract

In an era of ongoing biodiversity loss, there is a need for reliable methods that can be used to estimate population size and trends. Removal sampling can be used to estimate the abundance of a single population or of multiple spatially distinct populations of animals. Because multiple removal passes are made during a single visit to a population, it may be very efficient in terms of logistics. Here, we use removal sampling and hierarchical models to estimate the abundance of salamander (Salamandra salamandra) larvae in 15 first- and second-order streams. Detection was positively affected by sampling day, suggesting that observers improved their ability to detect salamander larvae. Abundance was positively affected by the number of pools in the streams. Overall, the removal sampling method performed well despite small sample size. Removal sampling may be a useful method for monitoring amphibians.

Abstract

In an era of ongoing biodiversity loss, there is a need for reliable methods that can be used to estimate population size and trends. Removal sampling can be used to estimate the abundance of a single population or of multiple spatially distinct populations of animals. Because multiple removal passes are made during a single visit to a population, it may be very efficient in terms of logistics. Here, we use removal sampling and hierarchical models to estimate the abundance of salamander (Salamandra salamandra) larvae in 15 first- and second-order streams. Detection was positively affected by sampling day, suggesting that observers improved their ability to detect salamander larvae. Abundance was positively affected by the number of pools in the streams. Overall, the removal sampling method performed well despite small sample size. Removal sampling may be a useful method for monitoring amphibians.

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Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:07 Faculty of Science > Institute of Evolutionary Biology and Environmental Studies
Dewey Decimal Classification:570 Life sciences; biology
590 Animals (Zoology)
Uncontrolled Keywords:Salamandra, salamander, hierarchical model, removal sampling, abundance
Language:English
Date:March 2015
Deposited On:01 Apr 2015 15:05
Last Modified:08 Dec 2017 12:40
Publisher:Brill Academic Publishers
ISSN:0173-5373
Publisher DOI:https://doi.org/10.1163/15685381-00002981
Related URLs:http://booksandjournals.brillonline.com/content/journals/10.1163/15685381-00002981

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