干旱区生态环境知识资源中心(Arid): Conservation of Northwestern and Southwestern Pond Turtles: Threats, Population Size Estimates, and Population Viability Analysis

Arid

DOI	10.3996/JFWM-20-094
	Conservation of Northwestern and Southwestern Pond Turtles: Threats, Population Size Estimates, and Population Viability Analysis
	Manzo, Stephanie; Nicholson, E. Griffin; Devereux, Zachary; Fisher, Robert N.; Brown, Chris W.; Scott, Peter A.; Shaffer, H. Bradley
通讯作者	Manzo, S (corresponding author), Univ Calif Los Angeles, Inst Environm & Sustainabil, Los Angeles, CA 90095 USA.
来源期刊	JOURNAL OF FISH AND WILDLIFE MANAGEMENT
ISSN	1944-687X
出版年	2021
卷号	12 期号:2 页码:485-501
英文摘要	Accurate status assessments of long-lived, widely distributed taxa depend on the availability of long-term monitoring data from multiple populations. However, monitoring populations across large temporal and spatial scales is often beyond the scope of any one researcher or research group. Consequently, wildlife managers may be tasked with utilizing limited information from different sources to detect range-wide evidence of population declines and their causes. When assessments need to be made under such constraints, the research and management communities must determine how to extrapolate from variable population data to species-level inferences. Here, using three different approaches, we integrate and analyze data from the peer-reviewed literature and government agency reports to inform conservation for northwestern pond turtles (NPT) Actinemys marmorata and southwestern pond turtles (SPT) Actinemys pallida. Both NPT and SPT are long-lived freshwater turtles distributed along the west coast of the United States and Mexico. Conservation concerns exist for both species; however, SPT may face more severe threats and are thought to exist at lower densities throughout their range than NPT. For each species, we ranked the impacts of 13 potential threats, estimated population sizes, and modeled population viability with and without long-term droughts. Our results suggest that predation of hatchlings by invasive predators, such as American bullfrogs Lithobates catesbeianus and Largemouth Bass Micropterus salmoides, is a high-ranking threat for NPT and SPT. Southwestern pond turtles may also face more severe impacts associated with natural disasters (droughts, wildfires, and floods) than do NPT. Population size estimates from trapping surveys indicate that SPT have smaller population sizes on average than do NPT (P = 0.0003), suggesting they may be at greater risk of local extirpation. Population viability analysis models revealed that long-term droughts are a key environmental parameter; as the frequency of severe droughts increases with climate change, the likelihood of population recovery decreases, especially when census sizes are low. Given current population trends and vulnerability to natural disasters throughout their range, we suggest that conservation and recovery actions first focus on SPT to prevent further population declines.
英文关键词	Actinemys marmorata Actinemys pallida western United States drought predation
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000728017600007
WOS关键词	ACTINEMYS-MARMORATA ; CLEMMYS-MARMORATA ; CALIFORNIA ; DESERT ; RIVER ; DEMOGRAPHICS ; MANAGEMENT ; DROUGHT ; HISTORY
WOS类目	Biodiversity Conservation ; Ecology
WOS研究方向	Biodiversity & Conservation ; Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/374016
作者单位	[Manzo, Stephanie; Nicholson, E. Griffin; Devereux, Zachary] Univ Calif Los Angeles, Inst Environm & Sustainabil, Los Angeles, CA 90095 USA; [Fisher, Robert N.; Brown, Chris W.] US Geol Survey, Western Ecol Res Ctr, 4165 Spruance Rd, San Diego, CA 92101 USA; [Scott, Peter A.] West Texas A&M Univ, Dept Life Earth & Environm Sci, Canyon, TX 79016 USA; [Shaffer, H. Bradley] Univ Calif Los Angeles, Dept Ecol & Evolutionary Biol, Inst Environm & Sustainabil, Los Angeles, CA 90095 USA; [Shaffer, H. Bradley] Univ Calif Los Angeles, La Kretz Ctr Calif Conservat Sci, Inst Environm & Sustainabil, Los Angeles, CA 90095 USA
推荐引用方式 GB/T 7714	Manzo, Stephanie,Nicholson, E. Griffin,Devereux, Zachary,et al. Conservation of Northwestern and Southwestern Pond Turtles: Threats, Population Size Estimates, and Population Viability Analysis[J],2021,12(2):485-501.
APA	Manzo, Stephanie.,Nicholson, E. Griffin.,Devereux, Zachary.,Fisher, Robert N..,Brown, Chris W..,...&Shaffer, H. Bradley.(2021).Conservation of Northwestern and Southwestern Pond Turtles: Threats, Population Size Estimates, and Population Viability Analysis.JOURNAL OF FISH AND WILDLIFE MANAGEMENT,12(2),485-501.
MLA	Manzo, Stephanie,et al."Conservation of Northwestern and Southwestern Pond Turtles: Threats, Population Size Estimates, and Population Viability Analysis".JOURNAL OF FISH AND WILDLIFE MANAGEMENT 12.2(2021):485-501.