Author Archives: Nathan Lyle

Large-scale patterns of isotope ratios are detectable in the tissues of organisms, but the variability in these patterns often obscures detection of environmental trends. We show that plants and animals at lower trophic levels are relatively poor indicators of the … read more

Gray wolves are a premier example of how predators can transform ecosystems through trophic cascades. However, whether wolves change ecosystems as drastically as previously suggested has been increasingly questioned. We demonstrate how wolves alter wetland creation and recolonization by killing … read more

Top predators have cascading effects throughout the food web, but their impacts on scavenger abundance are largely unknown. Gray wolves (Canis lupus) provide carrion to a suite of scavenger species, including the common raven (Corvus corax). Ravens are wide‐ranging and … read more

If applied generally to other species, the 2019 rule’s approach to ESA implementation would represent a significant scaling back of recovery efforts for widely distributed species that would increase both short term vulnerability and long-term loss of adaptive potential. Recent … read more

Thanks to your support, the National Wolfwatcher Coalition awarded two mini grants. The recipients are The Voyageurs Wolf Project and Tundra Speaks. The Voyageurs wolf project is a collaborative effort between the University of Minnesota and Voyageurs National Park. They … read more

Large carnivores are important ecological drivers of ecosystem dynamics when they occur at ecologically effective densities. They are also challenging to conserve, especially in transboundary settings such as along borders of parks and protected areas. Here, we tested for effects … read more