Wetland Wildlife Monitoring and Assessment

Gray, Matthew J.; Chamberlain, Michael J.; Buehler, David A.; Sutton, William B.

doi:10.1007/978-94-007-6931-1_7

Cited by 6 publications

(7 citation statements)

References 96 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Also, captured animals may be co-housed. For example, amphibian tadpoles occasionally are placed together in buckets as they are processed for biological data or pathogen surveillance [ 16 , 17 ]. We performed the experiments in a controlled laboratory environment at the Joe Johnson Animal Research and Teaching Unit of the University of Tennessee Institute of Agriculture.…”

Section: Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Poor biosecurity could lead to disease outbreaks in animal populations

et al. 2018

Self Cite

View full text Add to dashboard Cite

Human-mediated disease outbreaks due to poor biosecurity practices when processing animals in wild populations have been suspected. We tested whether not changing nitrile gloves between processing wood frog (Lithobates sylvaticus) tadpoles and co-housing individuals increased pathogen transmission and subsequent diseased-induced mortality caused by the emerging pathogen, ranavirus. We found that not changing gloves between processing infected and uninfected tadpoles resulted in transmission of ranavirus and increased the risk of mortality of uninfected tadpoles by 30X. Co-housing tadpoles for only 15 minutes with 10% of individuals infected resulted in ranavirus transmission and 50% mortality of uninfected tadpoles. More extreme mortality was observed when the co-housing infection prevalence was >10%. Our results illustrate that human-induced disease outbreaks due to poor biosecurity practices are possible in wild animal populations.

show abstract

Section: Methodsmentioning

confidence: 99%

“…These treatments were crossed for a total of nine treatment combinations each replicated five times. The replicate was a 19-L bucket filled with 4 L of water, which represents typical conditions for temporarily housing tadpoles captured in the wild [ 16 ]. In each bucket, there were 10 tadpoles with the aforementioned infection percentages.…”

Section: Methodsmentioning

confidence: 99%

Poor biosecurity could lead to disease outbreaks in animal populations

et al. 2018

Self Cite

View full text Add to dashboard Cite

show abstract

“…In fact, the conservation status of wetland wildlife, waterbirds included, is deteriorating faster than that of terrestrial species (Millenium Ecosystem Assessment, 2005;Rosenberg et al, 2019, for a recent survey in North America; Shuter et al, 2011). Therefore, it is important to track temporal changes in the abundance of migratory waterbirds (Gray et al, 2013;Wetlands International, 2010).…”

Section: Introductionmentioning

confidence: 99%

“…The study of temporal trends in populations can be applied to assess the carrying capacity at a given environment (Alonso et al, 1994), or to evaluate progress toward a management goal (Elzinga et al, 2001), which is usually part of a larger monitoring program (Greenwood & Robinson, 2006). Although monitoring wetland wildlife is difficult, and diverse techniques are usually needed to obtain robust population estimates (Gray et al, 2013), waterbirds are among the best monitored animals throughout the world (van der Valk, 2012;Wetlands International, 2010), and many authors have studied seasonal and/or inter-annual changes in the abundance of waterbirds. For instance, Russell et al (2014) examined how the distribution and abundance of 54 waterbird species changed between 1992 and 2010 in a rare wetland type in South Africa.…”

Section: Introductionmentioning

confidence: 99%

Summarizing abundance changes in waterbirds: some problems and a possible solution

González‐Oreja

Zuberogoitia²

2020

Rev.Mex.Biodiv.

View full text Add to dashboard Cite

“…As a consequence, indirect indices of abundance, based on surveys for field signs, have been often used to assess the presence, relative and absolute abundance of several species (e.g. Gese, 2001), including semi-aquatic rodents (Gray et al, 2013). As the attribution of field signs to the target species is often uncertain and animals cannot be individually identified, indirect indices have been the object of some criticism (Kruuk & Conroy, 1987;Jennelle, Runge & MacKenzie, 2002).…”

Section: Introductionmentioning

confidence: 99%

An indirect method for assessing the abundance of introduced pest Myocastor coypus (Rodentia) in agricultural landscapes

et al. 2015

View full text Add to dashboard Cite

Pest management requires the development of robust monitoring tools. In Italy, coypu Myocastor coypus (nutria) have been controlled since the early 1990s, but the effectiveness of these measures has never been tested. With the aim of developing a reliable and volunteer‐based method for the long‐term monitoring of coypu abundance in agricultural landscapes, we calibrated an index based on surveys for coypu paths against density estimates obtained through a standardized mark–recapture technique. Two trapping sessions were performed in winter for each of 12 1‐km long stretches of irrigation canals and watercourses using 15 baited cage traps. Trapping sessions lasted 7 days each, with a 10‐day break between sessions. Population size was assessed using three methods: Peterson–Lincoln's formula, capwire estimators and accumulation curves. Active coypu paths and five habitat variables were recorded by walking on the edge of both banks. The variables were then related to population size (y) by means of multi‐regressive models, testing for the predictive power of the selected models by leave‐one‐out cross‐validation. Multi‐regressive models included only the number of coypu paths with the best performances achieved by the model based on Peterson–Lincoln formula, supporting path count as an effective method to assess the abundance of the coypu in agricultural landscapes. Concurrently, to assess the field suitability of the indirect method, surveys for coypu paths were carried out on 122 randomly chosen 3‐km long stretches of irrigation canals and watercourses in the central part of the River Po valley (c. 15 000 km2; N Italy). The highest (>8/100 m) mean number of paths was recorded in the central part of the study area. According to the regression models, the overall number of coypu is predicted to range between 350 000 and 1 100 000, raising doubts about the effectiveness of current control measures.

show abstract

Wetland Wildlife Monitoring and Assessment

Cited by 6 publications

References 96 publications

Poor biosecurity could lead to disease outbreaks in animal populations

Poor biosecurity could lead to disease outbreaks in animal populations

Summarizing abundance changes in waterbirds: some problems and a possible solution

An indirect method for assessing the abundance of introduced pest Myocastor coypus (Rodentia) in agricultural landscapes

Contact Info

Product

Resources

About