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Year Published: 2019

Pathogen prevalence in American black bears (Ursus americanus) of the Jemez Mountains, New Mexico, USA

Informed management of American black bears (Ursus americanus) requires knowledge of the distribution and pathology of diseases affecting the species. Little information is available on pathogen prevalence from black bear populations in the Southwest, US, and it is unknown how these infections may influence black bear populations or disease...

Bard, Susan M.; Cain, James W.

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Year Published: 2019

Abundance-occupancy patterns in a riverine fish assemblage

The interspecific relationships between abundance and site occupancy have been widely studied in plants and animals, but principally in terrestrial systems. With few exceptions, a positive abundance–occupancy relationship has been reported. Few publications have included freshwater fish, possibly suggesting a general lack of abundance–occupancy...

Miranda, Leandro E.; Kilgore, K. J.

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Year Published: 2019

Biotic interactions are the dominant drivers of phylogenetic and functional structure in bird communities along a tropical elevational gradient

Understanding how biotic and abiotic interactions influence community assembly and composition is a fundamental goal in community ecology. Addressing this issue is particularly tractable along elevational gradients in tropical mountains that feature substantial abiotic gradients and rates of species turnover. We examined elevational patterns of...

Boyce, Andy J.; Shakya, Subir; Sheldon, Frederick H.; Moyle, Robert G.; Martin, Thomas E.

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Year Published: 2019

Predicting fish species richness and habitat relationships using Bayesian hierarchical multispecies occupancy models

Understanding how stream fishes respond to changes in habitat availability is complicated by low occurrence rates of many species, which in turn reduces the ability to quantify species–habitat relationships and account for imperfect detection in estimates of species richness. Multispecies occupancy models have been used sparingly in the analysis...

White, Shannon; Faulk, Evan; Tzilkowski, Caleb; Weber, Andrew; Marshall, Matt; Wagner, Tyler

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Year Published: 2019

International Organizations and Programs for Wildlife Conservation

Historically, private non-governmental entities in the developed world took interest in wildlife in developing nations. Nineteenth and early twentieth century explorers of Africa, Asia, and South America reported fascinating encounters with magnificent species that were previously cryptic or unknown (Robinson et al. 2017). Organizations such as...

Organ, John F.; Medina-Vogel, Gonzalo; Yoshida, T.

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Year Published: 2019

Climatic variation drives growth potential of juvenile Chinook Salmon (Oncorhynchus tshawytscha) along a sub-Arctic boreal riverscape

Climatic variation is a key driver of freshwater physical processes that in turn control stream fish growth and population dynamics at fine spatial scales and species distributions across broad landscapes. A recent downturn in Chinook Salmon returns across the Yukon River basin, Alaska, USA, and Yukon Territories, Canada, has led to hardship among...

Falke, Jeffrey A.; Huntsman, Brock M.; Schoen, Erik R.

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Year Published: 2019

Migration routes, foraging behavior, and site fidelity of loggerhead sea turtles (Caretta caretta) satellite tracked from a globally important rookery

The Archie Carr National Wildlife Refuge, Florida, USA (27.946°N, − 80.494°W) represents one of the largest loggerhead turtle (Caretta caretta) nesting sites in the Western Hemisphere. Surprisingly, little work has been conducted to determine females’ post-nesting migratory behavior and characteristics of their foraging areas. Between 2008 and...

Evans, D.R.; Carthy, Raymond R.; Ceriani, S.A.

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Year Published: 2019

Energy intake rate influences survival of Black Oystercatcher Haematopus bachmani broods

Black Oystercatchers Haematopus bachmani, a species of conservation concern, depend on marine intertidal prey resources. We examined diet, feeding rates, growth, and survival of Black Oystercatcher broods in southcentral Alaska, 2013-2014. To determine the importance of diet on brood survival, we modeled daily survival rates of broods as a...

Robinson, B.H.; Phillips, L.M.; Powell, Abby

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Year Published: 2019

Survival and movements of head‐started Mojave desert tortoises

Head‐starting is a conservation strategy in which young animals are protected in captivity temporarily before their release into the wild at a larger size, when their survival is presumably increased. The Mojave desert tortoise (Gopherus agassizii) is in decline, and head‐starting has been identified as one of several conservation measures to...

Daly, J. A.; Buhlmann, K. A.; Todd, B. D.; Moore, Clinton T.; Peaden, J. M.; Tuberville, T. D.

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Year Published: 2019

A collaborative approach to bridging the gap between wildlife managers and researchers

Although most wildlife professionals agree that science should inform wildlife management decisions, disconnect still exists between researchers and managers. If researchers are not striving to incorporate their findings into management decisions, support for research programs by managers can wane. If managers are not using research findings to...

Merkle, Jerod; Anderson, Neil J.; Baxley, Danna L.; Chopp, Matthew; Gigliotti, Laura C.; Gude, Justin A.; Harms, Tyler M.; Johnson, Heather E.; Merrill, Evelyn H.; Mitchell, Michael S.; Mong, Tony W.; Nelson, Jerry; Norton, Andrew S.; Sheriff, Michael J.; Tomasik, Eric; VanBeek, Kelly R.

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Year Published: 2019

Survival and recruitment dynamics of Black-legged Kittiwakes Rissa tridactyla at an Alaskan colony

The majority of seabirds breed colonially and exhibit considerable site fidelity over the course of their long lifespans. Initial colony selection can therefore have substantial fitness consequences; however, factors contributing to recruitment into colonies and subsequent fidelity remain unclear. We used multi-state capture-recapture models to...

Loftin, Cyndy; McKnight, Aly; Blomberg, Erik J.; Irons, David B.; McKinney, Shawn T.

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Year Published: 2019

Effects of stream temperature and substrate type on emergence patterns of Plecoptera and Trichoptera from northeastern United States headwater streams

The timing and spatial distribution of aquatic insect emergence is linked to the abiotic and biotic environment in streams. Studies of aquatic insect emergence are needed to generate baseline data to identify potential shifts in phenology and habitat-related emergence with global change. The purpose of this study was to 1) compare the timing of...

Cheney, Kristin N.; Roy, Allison; Smith, Robert F.; DeWalt, Edward R.