Directed dispersal by rotational shepherding supports landscape genetic connectivity in a calcareous grassland plant

2014 ◽  
Vol 23 (4) ◽  
pp. 832-842 ◽  
Author(s):  
Yessica Rico ◽  
Rolf Holderegger ◽  
Hans Juergen Boehmer ◽  
Helene H. Wagner
Keyword(s):  
Calcareous Grassland ◽  
Genetic Connectivity ◽  
Directed Dispersal ◽  
Landscape Genetic

Effect of Rotational Shepherding on Demographic and Genetic Connectivity of Calcareous Grassland Plants

2013 ◽  
Vol 28 (2) ◽  
pp. 467-477 ◽  
Author(s):  
YESSICA RICO ◽  
HANS JUERGEN BOEHMER ◽  
HELENE H. WAGNER
Keyword(s):  
Calcareous Grassland ◽  
Genetic Connectivity ◽  
Grassland Plants

Implications of incomplete networks on estimation of landscape genetic connectivity

2012 ◽  
Vol 14 (2) ◽  
pp. 287-298 ◽  
Author(s):  
Ilona R. Naujokaitis-Lewis ◽  
Yessica Rico ◽  
John Lovell ◽  
Marie-Josée Fortin ◽  
Melanie A. Murphy
Keyword(s):  
Genetic Connectivity ◽  
Landscape Genetic

scholarly journals Restoration recovers population structure and landscape genetic connectivity in a dispersal-limited ecosystem

2013 ◽  
Vol 101 (5) ◽  
pp. 1288-1297 ◽  
Author(s):  
Laura K. Reynolds ◽  
Michelle Waycott ◽  
Karen J. McGlathery
Keyword(s):  
Population Structure ◽  
Genetic Connectivity ◽  
Landscape Genetic

scholarly journals Factors affecting genetic connectivity and diversity of the island night lizard

2016 ◽  
Author(s):  
Stephen E. Rice ◽  
Rulon W. Clark
Keyword(s):  
Population Structure ◽  
Oceanic Islands ◽  
Genetic Connectivity ◽  
Factors Affecting ◽  
Landscape Features ◽  
Anthropogenic Habitat ◽  
Habitat Islands ◽  
Management Plans ◽  
Landscape Genetic ◽  
San Clemente Island

AbstractHabitat loss and fragmentation is one of the most severe threats to global biodiversity. Because human development often fragments natural areas into habitat “islands”, studies which characterize the genetic structure of species isolated on oceanic islands may provide insight into the management of anthropogenic habitat islands. The San Clemente Island night lizard, Xantusia riversiana reticulata, is endemic to two California Channel Islands, each with a history of anthropogenic disturbance. We genotyped 917 individuals from San Clemente Island and Santa Barbara Island at 23 microsatellite loci to quantify population structure and identify natural and anthropogenic landscape features affecting intra-island connectivity. We found significant, but shallow, population structure on each island with sites < 400 m apart identified as distinct genepools. Landscape genetic analyses identified conductive habitat as California boxthorn and prickly pear cactus on both islands. Landscape features which decreased connectivity were unique to each island and included natural and human-mediated features. These results can inform management plans on each island by identifying habitat targets for mitigation and restoration efforts designed to improve connectivity. Our results highlight the need for considering fine-scale features correlated with contemporary and historical patterns of fragmentation, especially in small and isolated habitats on the mainland that may be analogous to oceanic islands.

scholarly journals Landscape Genetic Connectivity and Evidence for Recombination in the North American Population of the White-Nose Syndrome Pathogen, Pseudogymnoascus destructans

2021 ◽  
Vol 7 (3) ◽  
pp. 182
Author(s):  
Adrian Forsythe ◽  
Karen J. Vanderwolf ◽  
Jianping Xu
Keyword(s):  
Population Structure ◽  
North America ◽  
North American ◽  
New York State ◽  
Genetic Connectivity ◽  
Allelic Association ◽  
Pseudogymnoascus Destructans ◽  
White Nose Syndrome ◽  
The North ◽  
Landscape Genetic

White-Nose Syndrome is an ongoing fungal epizootic caused by epidermal infections of the fungus, Pseudogymnoascus destructans (P. destructans), affecting hibernating bat species in North America. Emerging early in 2006 in New York State, infections of P. destructans have spread to 38 US States and seven Canadian Provinces. Since then, clonal isolates of P. destructans have accumulated genotypic and phenotypic variations in North America. Using microsatellite and single nucleotide polymorphism markers, we investigated the population structure and genetic relationships among P. destructans isolates from diverse regions in North America to understand its pattern of spread, and to test hypotheses about factors that contribute to transmission. We found limited support for genetic isolation of P. destructans populations by geographic distance, and instead identified evidence for gene flow among geographic regions. Interestingly, allelic association tests revealed evidence for recombination in the North American P. destructans population. Our landscape genetic analyses revealed that the population structure of P. destructans in North America was significantly influenced by anthropogenic impacts on the landscape. Our results have important implications for understanding the mechanism(s) of P. destructans spread.

scholarly journals Landscape Genetics of the Yellow-Bellied Toad (Bombina variegata) in the Northern Weser Hills of Germany

Diversity ◽  
2021 ◽  
Vol 13 (12) ◽  
pp. 623
Author(s):  
Jasmin Kleißen ◽  
Niko Balkenhol ◽  
Heike Pröhl
Keyword(s):  
Negative Impact ◽  
Positive Impact ◽  
Genetic Distances ◽  
Genetic Connectivity ◽  
Landscape Elements ◽  
Bombina Variegata ◽  
Study Sites ◽  
Landscape Genetic ◽  
Species Specific ◽  
The Impact

Anthropogenic influences such as deforestation, increased infrastructure, and general urbanization has led to a continuous loss in biodiversity. Amphibians are especially affected by these landscape changes. This study focuses on the population genetics of the endangered yellow-bellied toad (Bombina variegata) in the northern Weser Hills of Germany. Additionally, a landscape genetic analysis was conducted to evaluate the impact of eight different landscape elements on the genetic connectivity of the subpopulations in this area. Multiple individuals from 15 study sites were genotyped using 10 highly polymorphic species-specific microsatellites. Four genetic clusters were detected, with only two of them having considerable genetic exchange. The average genetic differentiation between populations was moderate (global FST = 0.1). The analyzed landscape elements showed significant correlations with the migration rates and genetic distances between populations. Overall, anthropogenic structures had the greatest negative impact on gene flow, whereas wetlands, grasslands, and forests imposed minimal barriers in the landscape. The most remarkable finding was the positive impact of the underpasses of the motorway A2. This element seems to be the reason why some study sites on either site of the A2 showed little genetic distance even though their habitat has been separated by a strong dispersal barrier.

Landscape genetic connectivity in a riparian foundation tree is jointly driven by climatic gradients and river networks

2014 ◽  
Vol 24 (5) ◽  
pp. 1000-1014 ◽  
Author(s):  
Samuel A. Cushman ◽  
Tamara Max ◽  
Nashelly Meneses ◽  
Luke M. Evans ◽  
Sharon Ferrier ◽  
...  
Keyword(s):  
Genetic Connectivity ◽  
River Networks ◽  
Landscape Genetic

scholarly journals Erratum to: Implications of incomplete networks on estimation of landscape genetic connectivity

2012 ◽  
Vol 14 (2) ◽  
pp. 557-557
Author(s):  
Ilona R. Naujokaitis-Lewis ◽  
Yessica Rico ◽  
John Lovell ◽  
Marie-Josée Fortin ◽  
Melanie A. Murphy
Keyword(s):  
Genetic Connectivity ◽  
Landscape Genetic

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
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