Do landscape and riverscape shape genetic patterns of the Neotropical otter, Lontra longicaudis, in eastern Mexico?

Latorre-Cárdenas, María Camila; Gutiérrez‐Rodríguez, Carla; Rico, Yessica; Martínez‐Meyer, Enrique

doi:10.1007/s10980-020-01114-5

Cited by 7 publications

(3 citation statements)

References 93 publications

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“…We identified 12 landscape structures (Table 1) to represent urbanisation in the landscape and reflect the specific ecological requirements for M. giganteus dispersal and grazing capabilities. These variables have seen significant support in landscape genetic studies throughout an urbanising landscape framework (Kimmig et al, 2020a;Latorre-Cardenas et al, 2021) and are considered possible influences on M. giganteus dispersal. All landscape structures were characterised as continuous raster layers and clipped from their original extents to match our study area; all datasets were projected into local UTM coordinates (GDA2020 UTM Zone 56).…”

Section: Environmental Data Variablesmentioning

confidence: 99%

Roo-tine Obstacles: Uncovering the spatio-genetic barriers for Eastern Grey Kangaroos (Macropus giganteus) in an urbanising landscape

Urbanek,

Conroy,

Leon

et al. 2023

Preprint

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Context Urban landscapes present a diverse matrix of structures and habitats containing significant physical and behavioural barriers to terrestrial wildlife dispersal. As a result, large mammals, with large home ranges, may be negatively impacted as behavioural and physical barriers are created. However, our understanding of these barriers in the context of genetic connectivity within urbanising landscapes is limited, particularly so for herbivores occupying these spaces. Objective We investigated the effects of landscape composition on the genetic differentiation of a large herbivorous macropodid, the Eastern grey kangaroo (Macropus giganteus), within the Sunshine Coast region of Australia. We tested whether genetic differentiation and gene flow in this rapidly urbanising environment was best explained by landscape structures (Isolation-by-Resistance) or geographical distances (Isolation-by-Distance) at multiple spatial scales. Methods We simulated ecological succession from genetic (n =130), and spatial datasets (n =56) to determine the magnitude of relationships between observed genetic distances and landscape composition. A multiscale design was used to assess spatio-genetic impacts at different spatial scales. Circuit theory methods were used to simulate ecological successions and subsequently infer landscape effects on observed genetic differentiations. Results Both Isolation-by-Distance and Isolation-by-Resistance explained the interpopulation genetic differentiation of our 12 surveyed populations. Genetic differentiation was explained primarily by vegetation structures, major waterways, roads and built infrastructure. Variables were scale-dependent, with biophysical and built infrastructures exhibiting the most variability across scales. Conclusion Our results suggest that gene flow between M. giganteus populations is highly dependent on the structure of the landscape, and influenced by anthropogenic structures. As such, emphasis on gene flow pathways of M. giganteus, and other large mammals, is required in conservation planning to preserve populations under urban pressures. The findings of this study can inform spatially-guided management decisions and long-term conservation strategies for large mammals under growing urban pressures worldwide.

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Section: Environmental Data Variablesmentioning

confidence: 99%

Roo-tine Obstacles: Uncovering the spatio-genetic barriers for Eastern Grey Kangaroos (Macropus giganteus) in an urbanising landscape

Urbanek,

Conroy,

Leon

et al. 2023

Preprint

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“…food, shelter). Some likely ecological and evolutionary consequences of habitat fragmentation and loss are declines in population size and genetic diversity and higher genetic structure (Alcaide et al., 2009 ; Balkenhol et al., 2015 ; García et al., 2021 ; Latorre‐Cardenas et al., 2021 ), leading to local extinctions (Caizergues et al., 2003 ), which are expected to be more severe in species with restricted dispersal and strict habitat requirements.…”

Section: Introductionmentioning

confidence: 99%

“…gene flow, genetic drift and selection), at the individual or population level (Balkenhol et al., 2015 ; Manel et al., 2003 ; Storfer et al., 2007 ). Landscape genetics combines landscape ecology, population genetics and spatial statistics to determine the effects of geographic distance and landscape attributes on genetic diversity, structure and gene flow (Baden et al., 2019 ; Flores‐Manzanero et al., 2019 ; Latorre‐Cardenas et al., 2021 ; Shirk et al., 2017 ; Storfer et al., 2007 ). It allows the evaluation of functional connectivity, that is, the association between the genetic distance of genetically differentiated populations and the landscape characteristics.…”

Section: Introductionmentioning

confidence: 99%

Landscape features influencing gene flow and connectivity of an endangered passerine

Bustillo‐de la Rosa,

Barrero,

Traba

et al. 2024

Ecology and Evolution

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Dispersal of individuals and gene flow are crucial aspects to maintain genetic diversity and viability of populations, especially in the case of threatened species. Landscape composition and structure may facilitate or limit individual movement within and among populations. We used a landscape genetics approach to assess the connectivity patterns of the threatened Dupont's lark (Chersophilus duponti subsp. duponti), considering their genetic patterns and the landscape features associated with its gene flow in Spain. We analysed the genetic relatedness based on 11 species‐specific polymorphic microsatellites on 416 Dupont's lark individuals sampled across peninsular Spain between 2017 and 2019, covering most of the European distribution of the species. To assess the relationship between the landscape composition and the species gene flow, we estimated genetic distance at the individual level (Dps). Next, we built a set of environmental surfaces from two time periods (years 1990 and 2018), based on factors such as land use and topography, influencing individuals' movement. We then obtained resistance surfaces from an optimization process on landscape variables. Landscape genetics analyses were done for single and composite surface models for each year separately. Our findings from both time points show that scatter or mosaic‐structured vegetation composed by low agricultural and tree cover and high presence of sclerophyllous shrubs favoured Dupont's lark dispersal, while dense and continuous tree cover, as well as areas of intensive agriculture, were limiting factors. Our results suggest the importance of steppe habitat patches for the species' establishment and dispersal. In addition, our results provide key information to develop conservation measures, including conserving and restoring steppe habitats as scattered and/or mosaic‐structured vegetation that could warrant the connectivity and persistence of Dupont's lark populations.

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Landscape Genetics in the Neotropics

da Silva Carvalho,

Côrtes

2023

Conservation Genetics in the Neotropics

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Do landscape and riverscape shape genetic patterns of the Neotropical otter, Lontra longicaudis, in eastern Mexico?

Cited by 7 publications

References 93 publications

Roo-tine Obstacles: Uncovering the spatio-genetic barriers for Eastern Grey Kangaroos (Macropus giganteus) in an urbanising landscape

Roo-tine Obstacles: Uncovering the spatio-genetic barriers for Eastern Grey Kangaroos (Macropus giganteus) in an urbanising landscape

Landscape features influencing gene flow and connectivity of an endangered passerine

Landscape Genetics in the Neotropics

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