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Keyword: gene flow

Spatial variation in the response of tiger gene flow to landscape features and limiting factors

Publications Posted on: June 17, 2020
Integrated landscape management of key population areas along with the corridors linking them is important for tiger conservation in the Indian subcontinent. Relationships between gene flow and landscape patterns, however, cannot be generalized given that different limiting factors influence movement in different spatial contexts.

High connectivity and minimal genetic structure among North American Boreal Owl populations, regardless of habitat matrix

Publications Posted on: March 04, 2020
Habitat connectivity and corridors are often assumed to be critical for the persistence of patchily distributed populations, but empirical evidence for this assumption is scarce. We assessed the importance of connectivity among habitat patches for dispersal by a mature-forest obligate, the Boreal Owl (Aegolius funereus).

Conserve the eco-evolutionary dynamic, not the subspecies: Phenological divergence and gene flow between temporal cohorts of Euphilotes ancilla endemic to southern Nevada

Publications Posted on: February 18, 2020
Euphilotes ancilla purpura and cryptica (Lycaenidae), butterflies endemic to the Spring Mountains (Clark Co., Nevada), have been described as two univoltine, temporally isolated, sympatric taxa that utilize different early- and late-flowering larval host plant varieties (Eriogonum umbellatum). However, our results from field and laboratory indicate that this is not the case.

Demographic fragmentation of a protected wolverine population bisected by a major transportation corridor

Publications Posted on: October 02, 2019
Roads fragment ecosystems around the globe, but the effects of this fragmentation on biodiversity remain poorly understood. Wolverines (Gulo gulo) are snow-dependent carnivores that occur at low densities and they exhibit low genetic diversity at the southern extent of their range where they are snow-limited and fragmented by human development.

Habitat fragmentation reduces genetic diversity and connectivity of the Mexican spotted owl: A simulation study using empirical resistance models

Publications Posted on: October 03, 2018
We evaluated how differences between two empirical resistance models for the same geographic area affected predictions of gene flow processes and genetic diversity for the Mexican spotted owl (Strix occidentalis lucida). The two resistance models represented the landscape under lowand high-fragmentation parameters.

Reproductive isolation and environmental adaptation shape the phylogeography of mountain pine beetle (Dendroctonus ponderosa)

Publications Posted on: June 01, 2018
Chromosomal rearrangement can be an important mechanism driving population differentiation and incipient speciation. In the mountain pine beetle (MPB, Dendroctonus ponderosae), deletions on the Y chromosome that are polymorphic among populations are associated with reproductive incompatibility.

Quantifying functional connectivity: The role of breeding habitat, abundance, and landscape features on range-wide gene flow in sage-grouse

Publications Posted on: May 11, 2018
Functional connectivity, quantified using landscape genetics, can inform conservation through the identification of factors linking genetic structure to landscape mechanisms.

Genetics research identifies Bengal tiger conservation opportunities

Science Spotlights Posted on: October 20, 2017
The Bengal tiger is the world’s largest feline, which has suffered immense declines in range and population. Today, less than 10 percent of the tiger's original range is occupied with a global population of less than 7000 individuals in the wild. Understanding the factors that drive local abundance and population connectivity are critical for the conservation of this species.  

Southwestern white pine - threats to the species in a changing world

Science Spotlights Posted on: October 19, 2017
Collaborative research is quantifying adaptive variation in tree species, specifically in southwestern white pine, across the western United States. This research predicts changes in species distribution and their ability to adapt in the face of global change by combining population-wide genomic data collection, common garden manipulative experiments, pathogen resistance trials, and simulation modeling.

Conserving threatened riparian ecosystems in the American West: Precipitation gradients and river networks drive genetic connectivity and diversity in a foundation riparian tree (Populus angustifolia)

Publications Posted on: September 25, 2017
Gene flow is an evolutionary process that supports genetic connectivity and contributes to the capacity of species to adapt to environmental change. Yet, for most species, little is known about the specific environmental factors that influence genetic connectivity, or their effects on genetic diversity and differentiation.