This decommissioned ERA site remains active temporarily to support our final migration steps to https://ualberta.scholaris.ca, ERA's new home. All new collections and items, including Spring 2025 theses, are at that site. For assistance, please contact erahelp@ualberta.ca.
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Displacement and Mortality of Birds by High Voltage Transmission Lines in the Canadian Dry Mixed Prairie
DownloadFall 2018
Canadian grasslands are continuing to experience loss in habitat and degradation in quality due to agricultural expansion and fragmentation from roads, pipelines, and transmission lines. Today, only 43% of Canadian mixed grass prairie remains. This loss and fragmentation has led to a decline in...
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Examining the role of trade-offs between current and future reproduction in shaping provisioning decisions in birds
DownloadFall 2024
Life-history theory and parental investment theory provide the theoretical framework for understanding the adaptive strategies employed by organisms to optimize reproductive success in dynamic environments. Avian species are a valuable model for testing these theories due to their diverse...
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Feather mite ecology and morphology: exploring how obligate ectosymbionts of birds are impacted by life on hosts
DownloadFall 2022
Feather mites (Acariformes: Sarcoptiformes: Analgoidea and Pterolichoidea) are a group of small arachnids that inhabit the feathers of nearly every species of bird. Life as ectosymbionts has shaped the morphology and ecology of feather mites, whose entire life cycles (from egg to adult) are...
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Fall 2018
Neotropical dry forests are severely threatened by human activities such as agricultural expansion, tourism, cattle ranching, logging, and an increase in human settlements. However, despite these trends, some countries have experienced forest recovery. Costa Rica is a clear example of this...