Use of Atlantic Forest protected areas by free-ranging dogs: estimating abundance and persistence of use

被引:32
作者
Paschoal, Ana Maria O. [1 ,2 ,3 ]
Massara, Rodrigo L. [1 ,2 ,3 ]
Bailey, Larissa L. [3 ]
Kendall, William L. [4 ]
Doherty, Paul F., Jr. [3 ]
Hirsch, Andre [5 ]
Chiarello, Adriano G. [6 ]
Paglia, Adriano P. [1 ]
机构
[1] Univ Fed Minas Gerais, Dept Biol Geral, Lab Ecol & Conservacao, Ave Antonio Carlos 6627, BR-31270901 Belo Horizonte, MG, Brazil
[2] Inst SerraDiCal Pesquisa & Conservacao, Rua Jose Hemeterio de Andrade 570, BR-30493180 Belo Horizonte, MG, Brazil
[3] Colorado State Univ, Dept Fish Wildlife & Conservat Biol, 1474 Campus Delivery,109 Wagar, Ft Collins, CO 80523 USA
[4] Colorado State Univ, Colorado Cooperat Fish & Wildlife Res Unit, US Geol Survey, 1484 Campus Delivery, Ft Collins, CO 80523 USA
[5] Univ Fed Sao Joao Del Rei, Programa Inst Bioengn, Km 47 Rodovia MG 424, BR-35701970 Sete Lagoas, MG, Brazil
[6] Univ Sao Paulo, Fac Filosofia Ciencias & Letras Ribeirao Preto, Dept Biol, Ave Bandeirantes 3900, BR-14040901 Ribeirao Preto, SP, Brazil
来源
ECOSPHERE | 2016年 / 7卷 / 10期
关键词
Brazil; camera traps; conservation; exotic species; invasive species; management; Neotropical Forest; reserves; robust design mark-recapture; subsidized predator; WOLF CHRYSOCYON-BRACHYURUS; ROAMING DOMESTIC DOGS; CANIS-FAMILIARIS; TEMPORARY EMIGRATION; BIOLOGICAL INVASIONS; HOME-RANGE; POPULATION; LANDSCAPE; PREDATORS; BEHAVIOR;
D O I
10.1002/ecs2.1480
中图分类号
Q14 [生态学(生物生态学)];
学科分类号
071012 ; 0713 ;
摘要
Worldwide, domestic dogs (Canis familiaris) are one of the most common carnivoran species in natural areas and their populations are still increasing. Dogs have been shown to impact wildlife populations negatively, and their occurrence can alter the abundance, behavior, and activity patterns of native species. However, little is known about abundance and density of the free-ranging dogs that use protected areas. Here, we used camera trap data with an open-robust design mark-recapture model to estimate the number of dogs that used protected areas in Brazilian Atlantic Forest. We estimated the time period these dogs used the protected areas, and explored factors that influenced the probability of continued use (e.g., season, mammal richness, proportion of forest), while accounting for variation in detection probability. Dogs in the studied system were categorized as rural free-ranging, and their abundance varied widely across protected areas (0-73 individuals). Dogs used protected areas near human houses for longer periods (e.g., >50% of sampling occasions) compared to more distant areas. We found no evidence that their probability of continued use varied with season or mammal richness. Dog detection probability decreased linearly among occasions, possibly due to the owners confining their dogs after becoming aware of our presence. Comparing our estimates to those for native carnivoran, we found that dogs were three to 85 times more abundant than ocelots (Leopardus pardalis), two to 25 times more abundant than puma (Puma concolor), and approximately five times more abundant than the crab-eating fox (Cerdocyon thous). Combining camera trapping data with modern mark-recapture methods provides important demographic information on free-ranging dogs that can guide management strategies to directly control dogs' abundance and ranging behavior.
引用
收藏
页数:15
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