Arid
DOI10.2193/2009-208
Drought Leads to Collapse of Black-Tailed Prairie Dog Populations Reintroduced to the Chihuahuan Desert
Facka, Aaron N.1; Roemer, Gary W.1; Mathis, Verity L.1; Kam, Michael2; Geffen, Eli3
通讯作者Facka, Aaron N.
来源期刊JOURNAL OF WILDLIFE MANAGEMENT
ISSN0022-541X
EISSN1937-2817
出版年2010
卷号74期号:8页码:1752-1762
英文摘要

Recently, a conservation strategy developed to restore populations of black-tailed prairie dog (Cynomys ludovicianus) suggested reintroducing animals into the Chihuahuan Desert grasslands of the southwestern United States. Rainfall in desert habitats is lower and more variable compared to rainfall near the center of the prairie dog’s range. Additionally, peak rainfall comes months after prairie dogs reproduce in these desert systems. Thus, southwestern populations may be less prolific and fluctuate more than those found in northerly climes. Using mark-recapture and mark-resight techniques, we estimated reproduction and monthly survival from 577 individuals inhabiting 6 reintroduced colonies from 2003 to 2005 in the northern Chihuahuan Desert. During 2003 precipitation was 64% of the long-term average, whereas both 2004 and 2005 had near-average precipitation. Probability that a female became pregnant, number of juvenile prairie dogs emerging from maternity burrows, and date of emergence were all correlated to adult female body mass. Adult monthly survival decreased from >0.95 during spring to 0.70 in summer 2003, following a rapid loss in adult body mass that coincided with low precipitation. In 2003 monthly juvenile survival was near zero on 2 of the 3 largest colonies and growth rates of juveniles were half that of subsequent years. Estimated population size declined by 68% (range = 18-91%) from 2003 to 2004, and 5 of 6 populations declined an average of 75% from their original introduction size. Prairie dog populations in desert environs may have a high risk of extirpation caused by weather patterns indicative of desert climates. Our results are important for those managers involved in the conservation of prairie dogs and we suggest that regional differences should be carefully considered prior to any reintroduction effort.


英文关键词black-tailed prairie dog Chihuahuan Desert conservation plan Cynomys ludovicianus historic range population collapse population dynamics reintroduction
类型Article
语种英语
国家USA ; Israel
收录类别SCI-E
WOS记录号WOS:000284107000014
WOS关键词GROUND-SQUIRRELS ; CYNOMYS-LUDOVICIANUS ; SPECIES CONSERVATION ; CAPTURE EXPERIMENTS ; SYLVATIC PLAGUE ; BODY CONDITION ; DYNAMICS ; ABUNDANCE ; RANGE ; SURVIVAL
WOS类目Ecology ; Zoology
WOS研究方向Environmental Sciences & Ecology ; Zoology
来源机构Ben-Gurion University of the Negev ; New Mexico State University
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/165538
作者单位1.New Mexico State Univ, Dept Fish Wildlife & Conservat Ecol, Las Cruces, NM 88003 USA;
2.Ben Gurion Univ Negev, Jacob Blaustein Inst Desert Res, IL-84105 Beer Sheva, Israel;
3.Tel Aviv Univ, Dept Zool, IL-69978 Tel Aviv, Israel
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GB/T 7714
Facka, Aaron N.,Roemer, Gary W.,Mathis, Verity L.,et al. Drought Leads to Collapse of Black-Tailed Prairie Dog Populations Reintroduced to the Chihuahuan Desert[J]. Ben-Gurion University of the Negev, New Mexico State University,2010,74(8):1752-1762.
APA Facka, Aaron N.,Roemer, Gary W.,Mathis, Verity L.,Kam, Michael,&Geffen, Eli.(2010).Drought Leads to Collapse of Black-Tailed Prairie Dog Populations Reintroduced to the Chihuahuan Desert.JOURNAL OF WILDLIFE MANAGEMENT,74(8),1752-1762.
MLA Facka, Aaron N.,et al."Drought Leads to Collapse of Black-Tailed Prairie Dog Populations Reintroduced to the Chihuahuan Desert".JOURNAL OF WILDLIFE MANAGEMENT 74.8(2010):1752-1762.
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