scholarly journals Sampling across 20 years (1996–2017) reveals loss of diversity and genetic connectivity in the Coachella Valley fringe-toed lizard (Uma inornata)

2019 ◽  
Author(s):  
Amy G. Vandergast ◽  
Dustin A. Wood ◽  
Mark Fisher ◽  
Cameron W. Barrows ◽  
Anna Mitelberg ◽  
...  
Keyword(s):  
Genetic Connectivity ◽  
Coachella Valley ◽  
Uma Inornata ◽  
Loss Of Diversity

scholarly journals Forty years later: monitoring and status of the endangered Coachella Valley fringe-toed lizard

2021 ◽  
pp. 243-257
Author(s):  
Cameron W. Barrows ◽  
Scott A. Heacox
Keyword(s):  
Environmental Variables ◽  
Sand Dune ◽  
Invasive Plant ◽  
Private Property ◽  
Ecosystem Processes ◽  
Coachella Valley ◽  
Management Actions ◽  
Habitat Islands ◽  
Uma Inornata ◽  
Plant Control

The Coachella Valley fringe-toed lizard, Uma inornata, was listed as endangered under the California Endangered Species Act in 1980. By that time, the lizard’s habitat was already reduced by 90%, fragmented into isolated habitat islands on private property among hundreds of landowners. Ecosystem processes that are essential for delivering sand and maintaining the lizard’s sand dune habitat were already compromised. As challenging as it was to protect its habitat under these conditions, populations of this lizard still occur across much of the area where it was found forty years ago. Annual monitoring was designed to assess the ongoing viability of these populations by quantifying the effects of potential threats and stressors and focusing adaptive management actions where they are most needed. Here we demonstrate how hypothesis-based monitoring identified specific locations where invasive plant control and sand corridor management were needed to maintain the lizard’s populations. By monitoring lizard densities within the context of environmental variables that either drive or inhibit population growth, this monitoring approach informs if, when, and where management actions are needed.

CONSERVATION GENETICS OF THE ENDANGERED COACHELLA VALLEY FRINGE-TOED LIZARD (UMA INORNATA)

Herpetologica ◽  
2007 ◽  
Vol 63 (4) ◽  
pp. 411-420 ◽  
Author(s):  
Shannon M. Hedtke ◽  
Kelly R. Zamudio ◽  
Christopher A. Phillips ◽  
Jonathan Losos ◽  
Phil Brylski
Keyword(s):  
Conservation Genetics ◽  
Coachella Valley ◽  
Uma Inornata

Effects of Reduction in Windblown Sand on the Abundance of the Fringe-Toed Lizard (Uma inornata) in the Coachella Valley, California

Copeia ◽  
1984 ◽  
Vol 1984 (2) ◽  
pp. 370 ◽  
Author(s):  
Frederick B. Turner ◽  
Donald C. Weaver ◽  
James C. Rorabaugh
Keyword(s):  
Coachella Valley ◽  
Windblown Sand ◽  
Uma Inornata

Trans-Tasman genetic connectivity in the intertidal air-breathing slug Onchidella nigricans

2016 ◽  
Vol 562 ◽  
pp. 93-100 ◽  
Author(s):  
RA Cumming ◽  
R Nikula ◽  
HG Spencer ◽  
JM Waters
Keyword(s):  
Genetic Connectivity ◽  
Air Breathing

scholarly journals Highly restricted dispersal in habitat-forming seaweed may impede natural recovery of disturbed populations

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Florentine Riquet ◽  
Christiane-Arnilda De Kuyper ◽  
Cécile Fauvelot ◽  
Laura Airoldi ◽  
Serge Planes ◽  
...  
Keyword(s):  
Genetic Structure ◽  
Spatial Scales ◽  
Mediterranean Ecosystems ◽  
Dispersal Distance ◽  
Genetic Connectivity ◽  
Restricted Gene Flow ◽  
Isolated Populations ◽  
Natural Recovery ◽  
Limited Dispersal ◽  
Ecological Importance

AbstractCystoseira sensu lato (Class Phaeophyceae, Order Fucales, Family Sargassaceae) forests play a central role in marine Mediterranean ecosystems. Over the last decades, Cystoseira s.l. suffered from a severe loss as a result of multiple anthropogenic stressors. In particular, Gongolaria barbata has faced multiple human-induced threats, and, despite its ecological importance in structuring rocky communities and hosting a large number of species, the natural recovery of G. barbata depleted populations is uncertain. Here, we used nine microsatellite loci specifically developed for G. barbata to assess the genetic diversity of this species and its genetic connectivity among fifteen sites located in the Ionian, the Adriatic and the Black Seas. In line with strong and significant heterozygosity deficiencies across loci, likely explained by Wahlund effect, high genetic structure was observed among the three seas (ENA corrected FST = 0.355, IC = [0.283, 0.440]), with an estimated dispersal distance per generation smaller than 600 m, both in the Adriatic and Black Sea. This strong genetic structure likely results from restricted gene flow driven by geographic distances and limited dispersal abilities, along with genetic drift within isolated populations. The presence of genetically disconnected populations at small spatial scales (< 10 km) has important implications for the identification of relevant conservation and management measures for G. barbata: each population should be considered as separated evolutionary units with dedicated conservation efforts.

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