I'm researching the genetic basis of salmon and steelhead life history and migration patterns.
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Understanding and anticipating the effects of climate change on fisheries social-ecological systems (FSESs) is central to proactive fisheries management in a changing global climate. With fisheries management increasingly striving to consider interactions and feedbacks among people, targeted species, and the broader ecological and human communities...
Cold poses major physiological challenges to plants, especially long lived trees. In trees occurring along variable temperature clines, the expected direction and consequences of selection on cold acclimation ability and freezing tolerance are not straightforward. Here we estimated selection in cold acclimation genes at two evolutionary timescales...
The nature and timing of evolution of niche differentiation among closely related species remains an important question in ecology and evolution. The American live oak clade, Virentes, which spans the unglaciated temperate and tropical regions of North America and Mesoamerica, provides an instructive system in which to examine speciation and niche...
Background/Question/Methods Live oaks (Quercus series Virentes) form a small monophyletic lineage that spans the tropical-temperate divide from North Carolina to Costa Rica. A previous study found genetically-based physiological variation in freezing stress and growth rate within and among live oak species spanning this latitudinal gradient (Koeh...
Understanding the role of ectomycorrhizal fungi in plant communities is hampered by a lack of knowledge about fungal diversity. DNA barcoding of the ectomycorrhizal fungal genus Cortinarius was used to compare fungal diversity in soil from four plant communities: (i) Nothofagus forest (where Cortinarius is common and diverse), (ii) Kunzea forest (w...