The influence of trap density and sampling duration on the detection of small mammal species richness

2008 ◽  
Vol 53 (2) ◽  
pp. 143-156 ◽  
Author(s):  
Jonathan M. Conard ◽  
Jeremy A. Baumgardt ◽  
Philip S. Gipson ◽  
Donald P. Althoff
Keyword(s):  
Species Richness ◽  
Small Mammal ◽  
Trap Density ◽  
Mammal Species ◽  
Sampling Duration ◽  
Small Mammal Species

The scientific, financial and ethical implications of three common wildlife-trapping designs

2019 ◽  
Vol 46 (8) ◽  
pp. 690 ◽  
Author(s):  
Helen P. Waudby ◽  
Sophie Petit ◽  
Matthew J. Gill
Keyword(s):  
Species Richness ◽  
Small Mammals ◽  
Small Mammal ◽  
Ethical Issues ◽  
Capture Rate ◽  
Cost Benefit ◽  
Mammal Species ◽  
Ethical Implications ◽  
Small Mammal Species ◽  
Capture Rates

Abstract ContextTrapping design influences information collected about wildlife populations and biodiversity. Trapping is also resource-intensive and has animal welfare implications. AimsThe scientific, financial and ethical performances of three trap designs were compared for estimating diversity and sampling small vertebrates. MethodsSmall vertebrates were trapped over 16 trapping sessions, from April 2009 to May 2011, with aluminium box-style (Elliott) traps and two pitfall trap designs (shallow–wide and deep–narrow), in an arid environment. Key resultsShallow pitfalls recorded highest overall species richness (S=22) and diversity (qD=10.622), reptile diversity (qD=8.112) and reptile capture rates (13.600 individuals per 100 trap nights). Shallow and deep pitfalls sampled ~79.0% and 85.0% (respectively) more small mammals than did Elliott traps. Deep pitfalls sampled the greatest diversity (qD=6.017) and number (29.700 individuals per 100 trap nights) of small mammals, and captured the greatest number of small mammal species (0.003) and individuals (0.106) per dollar. Shallow pitfalls were the most cost-efficient trap type for sampling reptile species (0.003) and individuals (0.044) per dollar. Between-session recapture rates were greatest in Elliott traps, indicating an increased likelihood of biased capture rates for certain small mammal species over time. Elliott traps were the least efficient traps on most scientific and cost measures, and recorded the greatest overall recapture rates, particularly for Sminthopsis crassicaudata and S. macroura. Body size of one species only, the nationally threatened Pseudomys australis, influenced its capture rate, with larger individuals more likely to be caught in deep pitfalls. Mortality was highest in pitfalls and mostly related to interactions between animals caught in the same trap. Key conclusionsShallow pitfalls are suitable for studies focused on estimating species richness, and reptile diversity and abundance. Deep pitfalls are cost-effective for sampling small mammals. Ethical issues associated with pitfalls could be managed by checking traps more often at night, and/or including materials that provide increased protection from predators caught in the same trap, particularly during periods of high abundance. ImplicationsTrap design profoundly influences cost-effectiveness and welfare outcomes of wildlife research. We provide a tool to assist cost-benefit related decisions.

scholarly journals VARIATION IN SMALL MAMMAL SPECIES RICHNESS BY TRAP HEIGHT AND TRAP TYPE IN SOUTHEASTERN AMAZONIA

2005 ◽  
Vol 86 (5) ◽  
pp. 982-990 ◽  
Author(s):  
Thomas D. Lambert ◽  
Jay R. Malcolm ◽  
Barbara L. Zimmerman
Keyword(s):  
Species Richness ◽  
Small Mammal ◽  
Mammal Species ◽  
Trap Height ◽  
Small Mammal Species

Spatio-temporal variation in small mammal species richness, relative abundance and body mass reveal changes in a coastal wetland ecosystem in Ghana

2016 ◽  
Vol 188 (6) ◽  
Author(s):  
Benjamin Y. Ofori ◽  
Daniel K. Attuquayefio ◽  
Erasmus H. Owusu ◽  
Yahaya Musah ◽  
Yaa Ntiamoa-Baidu
Keyword(s):  
Species Richness ◽  
Temporal Variation ◽  
Body Mass ◽  
Relative Abundance ◽  
Small Mammal ◽  
Coastal Wetland ◽  
Wetland Ecosystem ◽  
Mammal Species ◽  
Spatio Temporal ◽  
Small Mammal Species

Elevational patterns of non-volant small mammal species richness in Gyirong Valley, Central Himalaya: Evaluating multiple spatial and environmental drivers

2017 ◽  
Vol 44 (12) ◽  
pp. 2764-2777 ◽  
Author(s):  
Yiming Hu ◽  
Kun Jin ◽  
Zhiwen Huang ◽  
Zhifeng Ding ◽  
Jianchao Liang ◽  
...  
Keyword(s):  
Species Richness ◽  
Small Mammal ◽  
Environmental Drivers ◽  
Central Himalaya ◽  
Mammal Species ◽  
Small Mammal Species

scholarly journals Small mammal species richness is directly linked to regional productivity, but decoupled from food resources, abundance, or habitat complexity

2018 ◽  
Vol 45 (11) ◽  
pp. 2533-2545 ◽  
Author(s):  
Christy M. McCain ◽  
Sarah R. B. King ◽  
Tim Szewczyk ◽  
Jan Beck
Keyword(s):  
Species Richness ◽  
Small Mammal ◽  
Habitat Complexity ◽  
Food Resources ◽  
Mammal Species ◽  
Regional Productivity ◽  
Small Mammal Species

scholarly journals Small mammal species richness and turnover along elevational gradient in Yulong Mountain, Yunnan, Southwest China

2020 ◽  
Vol 10 (5) ◽  
pp. 2545-2558 ◽  
Author(s):  
Zhongzheng Chen ◽  
Xueyou Li ◽  
Wenyu Song ◽  
Quan Li ◽  
Kenneth Onditi ◽  
...  
Keyword(s):  
Species Richness ◽  
Small Mammal ◽  
Southwest China ◽  
Elevational Gradient ◽  
Mammal Species ◽  
Yulong Mountain ◽  
Small Mammal Species

Small-mammal species richness and abundance along a tropical altitudinal gradient: an Australian example

2010 ◽  
Vol 26 (2) ◽  
pp. 139-149 ◽  
Author(s):  
Brooke L. Bateman ◽  
Alex S. Kutt ◽  
Eric P. Vanderduys ◽  
Jeanette E. Kemp
Keyword(s):  
Species Richness ◽  
Small Mammal ◽  
Altitudinal Gradient ◽  
Mammal Species ◽  
Lower Productivity ◽  
Habitat Factors ◽  
Eastern Australia ◽  
North Eastern ◽  
Species Richness And Abundance ◽  
Small Mammal Species

Abstract:This study examined patterns in the species richness and abundance of small non-volant mammals along a tropical altitudinal gradient in north-eastern Australia. We investigated whether a mid-altitudinal peak in diversity was apparent, and if it occurred, whether it was determined by particular environmental conditions. We sampled a small-mammal assemblage at 17 sites distributed along an altitude-environmental gradient from savanna (350 m) to rain-forest vegetation (1000 m). Over four separate occasions (5100 trap-nights) we recorded 17 species of mammal with 416 captures. A positive non-linear relationship between altitude and mammal species richness and abundance was observed, peaking at the 800–900 m range. Many species were distributed across a range of altitudes, while others were strongly associated with particular habitat conditions. There was a distinct reduction in abundance and species richness at low altitudes associated with the less complex vegetation, lower productivity and possible anthropogenic effects. Key findings were: that small-mammal richness peaked towards the summit of the gradient and not at one-half the maximum altitude predicted by the mid-domain effect; contrasting conditions and greatest vegetation juxtaposition had the greatest influence on the patterns recorded; and that local idiosyncratic influences such as habitat factors, land management and historical biogeography are significant.

Unraveling the patterns of small mammal species richness in the southernmost aridlands of South America

2016 ◽  
Vol 134 ◽  
pp. 136-144 ◽  
Author(s):  
Anahí E. Formoso ◽  
Pablo Teta ◽  
Aníbal E. Carbajo ◽  
Ulyses F.J. Pardiñas
Keyword(s):  
Species Richness ◽  
South America ◽  
Small Mammal ◽  
Mammal Species ◽  
Small Mammal Species

Small mammal species richness in a Madagascar rain forest

1994 ◽  
Vol 32 (3) ◽  
pp. 255-258 ◽  
Author(s):  
P.J. Stephenson
Keyword(s):  
Species Richness ◽  
Small Mammal ◽  
Rain Forest ◽  
Mammal Species ◽  
Small Mammal Species
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