Article
Marine & Freshwater Biology
Yongsheng Wu, Charles Hannah, Pascal Matte, Mitchell O'Flaherty-Sproul, Ruping Mo, Xiaoyi Wang, Phillip MacAulay
Summary: This study investigated the tidal propagation in the Lower Fraser River in British Columbia, Canada using observed data and a hydrodynamic model. The results show that the amplitudes of the principal tides decrease from downstream to upstream and vary with different seasons and locations, strongly correlated with river discharge. The Pitt River and Pitt Lake system is found to be important for tidal propagation in the river channel.
ESTUARINE COASTAL AND SHELF SCIENCE
(2022)
Article
Environmental Sciences
Becky L. Brice, Bethany L. Coulthard, Inga K. Homfeld, Laura A. Dye, Kevin J. Anchukaitis
Summary: Recent intensification of floods and droughts in the Fraser River Basin of British Columbia has had significant impacts that are expected to worsen due to human-induced climate change. The study used tree-ring proxy records to develop subbasin-scale flood and drought season reconstructions, revealing that past high flood-season flows were more severe than recorded, and early 20th-century low flows during the drought season were especially severe. These reconstructions provide long-term benchmarks for natural flood and drought variability prior to human influence, suggesting that current management based on instrumental records may underestimate the full natural magnitude and frequency of extreme seasonal flows in the FRB.
ENVIRONMENTAL RESEARCH LETTERS
(2021)
Article
Geography, Physical
Michael Curran, Aaron T. Steelquist, Jeff Larimer, Erin Seagren, Tingan Li, Derek Heathfield, Brian Menounos, John J. Clague, Michael Church, Jeremy G. Venditti
Summary: This study investigates the alignment of the Fraser River in southwestern British Columbia with specific faults within the Fraser River Fault zone. The results show that the regional alignment of the river is controlled by the main fault, while individual canyons align with subsidiary faults. It is suggested that canyons deviating from faults were formed due to large sediment inputs, creating epigenetic canyons. Overall, the river orientations in the Fraser River Fault zone are influenced by both main and subsidiary fault structures.
EARTH SURFACE PROCESSES AND LANDFORMS
(2023)
Article
Public, Environmental & Occupational Health
Fahra Rajabali, Kate Turcotte, Alex Zheng, Nick Pauls, Tony Nguyen, Evelyn Kalman, Vedrana Covic, Ian Pike
Summary: This study quantified the total cost of violent firearm-related offenses in British Columbia from 2012 to 2016, estimating direct costs to the health care system, indirect costs to society, and criminal justice system costs. The study found a total of 108 deaths and 245 hospitalizations resulting from violent firearm injuries, with an average annual cost of $294,378,985. The costs were significantly higher in the criminal justice system than in health care.
FRONTIERS IN PUBLIC HEALTH
(2023)
Article
Engineering, Geological
K. E. Hughes, M. Geertsema, E. Kwoll, M. N. Koppes, N. J. Roberts, J. J. Clague, S. Rohland
Summary: A bathymetric survey of Harrison Lake in southwest British Columbia revealed deposits of three large landslides on the lake floor, with two of them having the potential to generate tsunamis. This study provides an important foundation for further landslide-tsunami hazard analysis in the region, especially for those living along the shoreline of the lake.
Article
Microbiology
Joseph P. P. Nowlan, Ashton N. N. Sies, Scott R. R. Britney, Andrew D. S. Cameron, Ahmed Siah, John S. S. Lumsden, Spencer Russell
Summary: Tenacibaculum is a genus of Gram-negative bacteria found worldwide. This study focused on Tenacibaculum genomes from Norway, Chile, and Canada, specifically their impacts on salmon aquaculture. The researchers used sequencing techniques to select and analyze isolates from Canadian salmon with mouthrot, discovering several known and unknown species of Tenacibaculum with potential virulence and antimicrobial resistance genes.
Article
Environmental Sciences
Kerry Schutten, Akshaya Chandrashekar, Madelaine Bourdages, Victoria Bowes, John Elliott, Sandi Lee, Tony Redford, Jennifer Provencher, Claire Jardine, Laurie Wilson
Summary: Since the 1960s, plastic pollution has become one of the most widespread and common forms of pollution globally. However, there is limited knowledge on the ingestion of plastic by terrestrial and freshwater bird species, particularly birds of prey. This study analyzed the gastrointestinal tracts of 234 raptors from 15 species collected between 2013 and 2021, and found that only a small number of individuals had evidence of plastic ingestion. Based on these results, further research on microplastic accumulation in raptors and increasing sample sizes across species is recommended to gain a more comprehensive understanding of plastic ingestion in these birds.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Environmental Sciences
Zeyu Yang, Keval Shah, Sonia Laforest, Emile Cardinal, Patrick Lambert, Bruce P. Hollebone, Carl E. Brown, Michael Goldthorp, Kevin Waston, Chun Yang, William Durand
Summary: The study analyzed intertidal sediments from the Fraser River Delta in British Columbia, Canada, and found that most sampling sites had low levels of petroleum hydrocarbons, n-alkanes, and polycyclic aromatic hydrocarbons, with mainly biogenic components. With the exception of one site, the presence of PAHs did not have significant negative effects on benthic organisms.
MARINE POLLUTION BULLETIN
(2021)
Article
Public, Environmental & Occupational Health
Notice Ringa, Sarafa A. Iyaniwura, Samara David, Mike A. Irvine, Prince Adu, Michelle Spencer, Naveed Z. Janjua, Michael C. Otterstatter
Summary: This study analyzes the relationship between close-contact rates, reported cases, and transmission of COVID-19 in British Columbia, Canada. The results show that contact rates play a significant role in transmission, and an increase in reported cases leads to a decrease in subsequent contact rates.
FRONTIERS IN PUBLIC HEALTH
(2022)
Article
Food Science & Technology
Ryan B. B. Shartau, Lenora D. M. Turcotte, Julia C. C. Bradshaw, Andrew R. S. Ross, Blair D. D. Surridge, Nina Nemcek, Stewart C. C. Johnson
Summary: This study investigated the presence of algal toxins in the coastal waters of British Columbia, Canada, and found multiple co-occurring toxins. However, the levels detected were below the regulatory limits for health and recreational use.
Article
Environmental Sciences
Katie E. Hughes, Amanda Wild, Eva Kwoll, Marten Geertsema, Alexandra Perry, K. Darcy Harrison
Summary: This study used remote sensing imagery, topographic surveys, and field observation to investigate a retrogressive landslide near a tributary to the Peace River in British Columbia. The landslide delivered a significant amount of sediment to the river annually and high plume activity was found to be related to increased groundwater pressure. Monitoring using readily available imagery is a feasible method for tracking the activity of this recurring landslide.
Article
Environmental Sciences
Lori-jon C. Waugh, Iselle Flores Ruiz, Cheng Kuang, Jian Guo, Jay T. T. Cullen, Maria T. T. Maldonado
Summary: The Strait of Georgia is influenced by both ocean and freshwater, with Cu concentration controlled by mixing dynamics and buffering effects of Cu-binding ligands. The results suggest that the marine life in the Strait of Georgia is not threatened by Cu toxicity due to the presence of effective Cu-binding ligands. Factors such as ligand class, concentration, and temperature play a significant role in Cu speciation.
FRONTIERS IN MARINE SCIENCE
(2022)
Article
Geochemistry & Geophysics
Alireza Babaie Mahani, Stuart Venables, Honn Kao, Ryan Visser, Michelle Gaucher, Ramin M. H. Dokht, Jeff Johnson
Summary: This study evaluates seismic intensity in the Western Canada Sedimentary Basin (WCSB) using data collected by the BC Oil and Gas Commission from 2016-2020, providing an isoseismal map for the Septimus region. The research finds that the intensity of shallow earthquakes decays more rapidly with distance compared to deeper events, highlighting the need for more systematic data collection in the WCSB.
SEISMOLOGICAL RESEARCH LETTERS
(2021)
Article
Environmental Sciences
Marie Noel, Catherine Wong, Peter S. Ross, Shreyas Patankar, Anahita Etemadifar, Carmen Morales-Caselles, Shirley Lyons, Kelsey Delisle
Summary: Microplastics were found in both surficial marine sediment and mussel samples collected along the coast of British Columbia, Canada, with the main source being textiles. Victoria Harbour and the North Coast were identified as hotspots of microplastic pollution.
MARINE POLLUTION BULLETIN
(2022)
Article
Multidisciplinary Sciences
Azzam Barham, Mohd Suhaili Ismail, Maman Hermana, N. S. Zainal Abidin
Summary: The Montney Formation source rock in northeastern British Columbia, Canada, was analyzed for its depositional conditions and organic matter source input, as well as its level of thermal maturity. The results indicate that the source rock was deposited in a marine dysxic environment with a mixture of marine-terrestrial derived organic matter. The maturity indices suggest that the source rock is mature to postmature for hydrocarbon generation.
Article
Fisheries
H. S. Galbraith, C. J. Blakeslee, A. K. Schmucker, N. S. Johnson, M. J. Hansen, W. Li
JOURNAL OF FISH BIOLOGY
(2017)
Article
Fisheries
Daniel J. Schill, Kevin A. Meyer, Michael J. Hansen
NORTH AMERICAN JOURNAL OF FISHERIES MANAGEMENT
(2017)
Article
Fisheries
Louise Chavarie, Kimberly L. Howland, Les N. Harris, Mike J. Hansen, Colin P. Gallagher, William J. Harford, William M. Tonn, Andrew M. Muir, Charles C. Krueger
ECOLOGY OF FRESHWATER FISH
(2019)
Article
Marine & Freshwater Biology
Michael J. Hansen, Matthew P. Corsi, Andrew M. Dux
Article
Marine & Freshwater Biology
Andrew M. Dux, Michael J. Hansen, Matthew P. Corsi, Nicholas C. Wahl, James P. Fredericks, Charles E. Corsi, Daniel J. Schill, Ned J. Horner
Article
Marine & Freshwater Biology
Matthew P. Corsi, Michael J. Hansen, Michael C. Quist, Daniel J. Schill, Andrew M. Dux
Article
Marine & Freshwater Biology
Michael J. Hansen, Charles C. Krueger, Andrew M. Muir, Anders Klemetsen, Michael Power
Article
Biodiversity Conservation
Michael J. Hansen, Louise Chavarie, Andrew M. Muir, Kimberly L. Howland, Charles C. Krueger
JOURNAL OF FISH AND WILDLIFE MANAGEMENT
(2020)
Article
Fisheries
Benjamin J. Rook, Michael J. Hansen, Cory A. Goldsworthy, Bradley A. Ray, Owen T. Gorman, Daniel L. Yule, Charles R. Bronte
Summary: The study suggests that historical stocks of cisco in Lake Superior had higher recruitment and adult abundance, lower compensatory density dependence, and similar or lower recruitment variation compared to contemporary stocks. These findings indicate that eutrophication during the historical period may have supported greater recruitment and adult abundance, while re-oligotrophication during the contemporary period may be limiting full recovery.
FISHERIES MANAGEMENT AND ECOLOGY
(2021)
Article
Biodiversity Conservation
Benjamin J. Rook, Michael J. Hansen, Charles R. Bronte
Summary: Historically, Cisco Coregonus artedi and deepwater ciscoes Coregonus spp. were abundant and ecologically important fish species in the Laurentian Great Lakes. Due to human activities, their populations collapsed by the 1970s. Fishery managers are exploring the feasibility of restoring populations, but questions about hatchery propagation and stocking remain. This study estimated the number of hatchery-reared Ciscoes needed for stocking to mimic recruitment rates in Lake Superior and found that basin-wide stocking would require larger quantities than currently possible.
JOURNAL OF FISH AND WILDLIFE MANAGEMENT
(2022)
Article
Biodiversity Conservation
Benjamin J. Rook, Michael J. Hansen, Charles R. Bronte
Summary: The study found that in the Michigan waters of the upper Great Lakes from 1929 to 1970, there was either no correlation or a positive correlation between the commercial catch per effort (CPE) of Cisco and Lake Whitefish. The regional model showed strong positive correlations in two regions and a weak negative correlation in one region between Cisco and Lake Whitefish CPE. These findings suggest that Cisco and Lake Whitefish were largely independent of each other during the specified time period.
JOURNAL OF FISH AND WILDLIFE MANAGEMENT
(2021)
Article
Fisheries
Michael J. Hansen, Nancy A. Nate, Andrew M. Muir, Louise Chavarie, Kimberly L. Howland, Charles C. Krueger
Summary: The study examined the relationship between otolith weight and age of Lake Trout populations. It found a significant nonlinear relationship between otolith weight and age, and concluded that estimating age based on otolith weight alone is not accurate. However, using otolith weight to analyze maturity and survival rates is more reliable.
NORTH AMERICAN JOURNAL OF FISHERIES MANAGEMENT
(2022)
Article
Multidisciplinary Sciences
Louise Chavarie, Kimberly L. Howland, Les N. Harris, Michael J. Hansen, William J. Harford, Colin P. Gallagher, Shauna M. Baillie, Brendan Malley, William M. Tonn, Andrew M. Muir, Charles C. Krueger
Article
Ecology
Richard A. Erickson, Eric A. Eager, Marybeth K. Brey, Michael J. Hansen, Patrick M. Kocovsky
ECOLOGICAL MODELLING
(2017)
Article
Evolutionary Biology
Louise Chavarie, Andrew M. Muir, Mara S. Zimmerman, Shauna M. Baillie, Michael J. Hansen, Nancy A. Nate, Daniel L. Yule, Trevor Middel, Paul Bentzen, Charles C. Krueger
BIOLOGICAL JOURNAL OF THE LINNEAN SOCIETY
(2017)