Article
Biology
Ouellet Valerie, Melinda D. Daniels
Summary: The study examined the shift in thermal habitat occupation for Brook and Brown Trout populations during the summer, with an increase in Brown Trout and a decrease in Brook Trout numbers. The observed population shifts were driven by optimal growth temperatures rather than elevated water temperatures, potentially affecting interactions and survival throughout the summer.
JOURNAL OF THERMAL BIOLOGY
(2021)
Article
Multidisciplinary Sciences
Brooke E. Penaluna, Jonathan D. Burnett, Kelly Christiansen, Ivan Arismendi, Sherri L. Johnson, Kitty Griswold, Brett Holycross, Sonja H. Kolstoe
Summary: Predicting the edges of species distributions is crucial for species conservation, ecosystem services, and management decisions. In this study, we compared 26 models to predict the upper distribution limits of trout in streams, and developed a two-stage model called UPstream Regional LiDAR Model for Extent of Trout (UPRLIMET), which performed the best in predictive performance. Factors such as upstream channel length, drainage area, slope, and elevation were found to be the most important in determining the upper distribution limit.
SCIENTIFIC REPORTS
(2022)
Article
Environmental Sciences
Michael A. Manning, Ivan Arismendi, J. Andres Olivos, Guillermo Giannico
Summary: The introduction of non-native species can have negative impacts on native species through hybridization. This study developed a spatially-explicit Hybridization Risk Model (HRM) to assess the risk of hybridization between native bull trout and introduced brook trout in Oregon, United States. The model classified stream segments into different levels of risk and can be applied to other species as well.
FRONTIERS IN ENVIRONMENTAL SCIENCE
(2022)
Article
Ecology
Brock M. Huntsman, Eric R. Merriam, Christopher T. Rota, J. Todd Petty
Summary: The success of stream restoration is difficult to define due to the complex interactions of abiotic and biotic factors. This study found that habitat restoration in invaded landscapes can benefit both native and non-native fish species. However, the positive effects of restoration on native fish were only observed when non-native competitors were absent.
RESTORATION ECOLOGY
(2023)
Article
Fisheries
Tyson B. Hallbert, Ernest R. Keeley
Summary: Adding pool habitat improves habitat quality, leading to increased densities of cutthroat trout and higher fish growth.
CANADIAN JOURNAL OF FISHERIES AND AQUATIC SCIENCES
(2023)
Article
Fisheries
Casey C. Day, Erin L. Landguth, Ryan K. Simmons, William P. Baker, Andrew R. Whiteley, Paul M. Lukacs, Kaeli A. Davenport, Andrew R. Bearlin
Summary: The study investigated the effectiveness of different management approaches in eradicating non-native brook trout by mechanical removal and Trojan Y chromosome programs. Results showed that stocking YY fingerling males (around 137 mm) was more effective than stocking catchable-sized YY males (around 230 mm), and increasing the proportion of mature YY fingerling males reduced treatment time. Maximizing the spatial distribution of YY male releases was crucial to program success.
CANADIAN JOURNAL OF FISHERIES AND AQUATIC SCIENCES
(2021)
Article
Fisheries
Magnus Loven Wallerius, Vilhem Moran, Libor Zavorka, Johan Hojesjo
Summary: Interference competition can have significant effects on population structure and habitat use among different species. The introduction of invasive species often leads to competitive interactions over resources, resulting in exclusion of native species from preferred habitats. This study investigates the competition between invasive brook trout and native brown trout, finding that brook trout have a competitive advantage and can displace smaller brown trout to suboptimal habitats.
JOURNAL OF FISH BIOLOGY
(2022)
Article
Fisheries
Sean M. Naman, Jordan S. Rosenfeld, Alecia S. Lannan
Summary: This study investigates how changes in predation risk, cover, and bioenergetics affect diel activity and habitat use patterns of sympatric rainbow trout and bull trout. Rainbow trout and bull trout primarily forage at dusk, but only rainbow trout respond to changes in cover. These findings have important implications for predicting habitat suitability and managing instream flows.
CANADIAN JOURNAL OF FISHERIES AND AQUATIC SCIENCES
(2022)
Article
Ecology
Mark S. Ridgway, Allan H. Bell, Nick A. Lacombe, Krystal J. Mitchell, Darren A. Smith, Courtney E. Taylor, Trevor A. Middel
Summary: Realized thermal niche and habitat use are two conceptualizations of fish habitat. The overlap between the two types of habitat was compared for lake trout and brook trout co-occurring in four large oligotrophic lakes. The results showed that the overlap between thermal habitat and habitat use varied among different lakes, and the morphology of lakes and food web connections played important roles in habitat allocation.
ENVIRONMENTAL BIOLOGY OF FISHES
(2023)
Article
Environmental Sciences
Robert Al-Chokhachy, Roger Peka, Erik Horgen, Daniel J. Kaus, Tim Loux, Lisa Heki
Summary: In arid ecosystems, water availability plays a critical role in the life-history expression of Lahontan cutthroat trout. Air temperature and stream discharge have significant effects on stream temperature, with increased discharge helping mitigate temperatures during warm months. Adult spawning migration and juvenile growth are influenced by stream discharge and temperature. Stream temperature also determines the duration of juvenile rearing.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Fisheries
John A. Sweka, Tyler Wagner
Summary: A study found that the recruitment of Brook Trout is influenced by both density-dependent and density-independent factors. Analyzing data from 10 streams in Pennsylvania, researchers discovered that streamflow has a significant impact on Brook Trout recruitment, and this information can be used to predict future changes.
TRANSACTIONS OF THE AMERICAN FISHERIES SOCIETY
(2022)
Article
Evolutionary Biology
Shannon H. Clarke, Gregory R. McCracken, Shelley Humphries, Daniel E. Ruzzante, James W. A. Grant, Dylan J. Fraser
Summary: Sustainable management of exploited populations requires considering both demographic and genetic factors. Size-selective harvest can lead to significant changes in population dynamics and genetics. A study on brook trout populations in alpine lakes showed consistent decreases in the effective number of breeders in harvested populations, but no evidence of genetic compensation.
EVOLUTIONARY APPLICATIONS
(2022)
Article
Multidisciplinary Sciences
Donovan A. Bell, Ryan P. Kovach, Clint C. Muhlfeld, Robert Al-Chokhachy, Timothy J. Cline, Diane C. Whited, David A. Schmetterling, Paul M. Lukacs, Andrew R. Whiteley
Summary: This study found that climate change has negative impacts on the distributions of native and invasive trout species in the northern Rocky Mountains of the USA. The occupancy rates of bull trout and cutthroat trout decreased over time, with different reasons behind these declines, requiring species-specific management actions.
Article
Ecology
Dana R. Warren, David A. Roon, Allison G. Swartz, Kevin D. Bladon
Summary: This study examines the impacts of climate change and abrupt disturbances such as wildfires on native salmonid fishes. It is found that wildfires can lead to substantial increases in stream temperature, yet populations of cold-water fishes are able to persist despite the drastic changes, with unclear mechanisms requiring further investigation.
Article
Fisheries
John M. Fennell, William C. Rosenthal, Catherine E. Wagner, Jason C. Burckhardt, Annika W. Walters
Summary: Hybridisation with introduced species is a threat to native fish populations. Temporal isolation, as a mechanism of reproductive isolation, can limit or prevent hybridisation between closely related species. However, despite the spawning timing difference, substantial overlap in spawning seasons leads to ongoing hybridisation between Yellowstone cutthroat trout, rainbow trout, and hybrids.
ECOLOGY OF FRESHWATER FISH
(2023)
Article
Fisheries
David C. Kazyak, Robert H. Hilderbrand, Stephen R. Keller, Mark C. Colaw, Amanda E. Holloway, Raymond P. Morgan, Tim L. King
TRANSACTIONS OF THE AMERICAN FISHERIES SOCIETY
(2015)
Article
Biodiversity Conservation
Austin A. Rizzo, Richard L. Raesly, Robert R. Hilderbrand
Article
Environmental Sciences
Cara A. Campbell, Robert H. Hilderbrand
AQUATIC CONSERVATION-MARINE AND FRESHWATER ECOSYSTEMS
(2017)
Editorial Material
Fisheries
Matthew T. Sell, David C. Kazyak, Robert H. Hilderbrand, Alan A. Heft, Ryan M. Cooper
NORTH AMERICAN JOURNAL OF FISHERIES MANAGEMENT
(2016)
Editorial Material
Fisheries
David C. Kazyak, Matthew T. Sell, Robert H. Hilderbrand, Alan A. Heft, Ryan M. Cooper
NORTH AMERICAN JOURNAL OF FISHERIES MANAGEMENT
(2016)
Article
Multidisciplinary Sciences
David C. Kazyak, Robert H. Hilderbrand, Tim L. King, Stephen R. Keller, Vikram E. Chhatre
Article
Fisheries
Robert H. Hilderbrand, David C. Kazyak
NORTH AMERICAN JOURNAL OF FISHERIES MANAGEMENT
(2017)
Article
Environmental Sciences
Mark S. Castro, Robert H. Hilderbrand, Morgan Kaumeyer
ARCHIVES OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY
(2018)
Article
Biodiversity Conservation
Todd R. Lookingbill, John Paul Schmit, Samantha M. Tessel, Marcela Suarez-Rubio, Robert H. Hilderbrand
ECOLOGICAL INDICATORS
(2014)
Article
Biodiversity Conservation
Jason F. Cessna, Richard L. Racsly, Jay V. Kilian, Daniel A. Cincotta, Robert H. Hilderbrand
NORTHEASTERN NATURALIST
(2014)
Article
Biodiversity Conservation
Angela L. Sjollema, J. Edward Gates, Robert H. Hilderbrand, John Sherwell
NORTHEASTERN NATURALIST
(2014)
Article
Environmental Sciences
Mark S. Castro, Morgan Kaumeyer, Robert H. Hilderbrand
ARCHIVES OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY
(2019)
Article
Multidisciplinary Sciences
Robert H. Hilderbrand, Stephen R. Keller, Sarah M. Laperriere, Alyson E. Santoro, Jason Cessna, Regina Trott
Review
Ecology
Robert H. Hilderbrand, Ted Bambakidis, Byron C. Crump
Summary: The goods and services provided by riverine systems are vital for humanity, but these systems are degrading worldwide despite restoration efforts. Designing restorations to promote microbial communities could enhance restoration effectiveness. Focusing on microbial diversity and function can improve resilience and assess restoration suitability. Advancements in next-generation sequencing allow the use of microbial 'omics techniques to assess river ecological conditions and advance assessment capabilities.
Article
Biodiversity Conservation
Stephen R. Keller, Robert H. Hilderbrand, Matthew K. Shank, Marina Potapova
DIVERSITY AND DISTRIBUTIONS
(2017)