Showing papers in "Canadian Journal of Fisheries and Aquatic Sciences in 2020"
TL;DR: The River Continuum Concept (RCC) as mentioned in this paper is a milestone in stream ecology because of its comprehensive evaluation of the structure and function of lotic ecosystems, linking stream physical and geomorphological properties.
Abstract: The River Continuum Concept (RCC) is a milestone in stream ecology because of its comprehensive evaluation of the structure and function of lotic ecosystems. Linking stream physical and geomorpholo...
54 citations
TL;DR: Results were more biased for slightly depleted than for highly depleted stocks and for long-lived than for short-lived species, and among the catch-based models, the one with the best performance was SSS followed by CMSY.
Abstract: The quantity of data from many small-scale fisheries is insufficient to allow for the application of conventional assessment methods. Even though in many countries they are moving to closed-loop si...
39 citations
TL;DR: In this article, conservation efforts for Pacific salmon (Oncorhynchus spp.) increasingly prioritize maintenance of cool water temperatures that protect all freshwater life stages, but development of appropria...
Abstract: Conservation efforts for Pacific salmon (Oncorhynchus spp.) increasingly prioritize maintenance of cool water temperatures that protect all freshwater life stages. However, development of appropria...
38 citations
TL;DR: Most fish recruitment models consider only one or a few drivers in isolation, rarely include species' traits, and have limited relevance to riverine environments as mentioned in this paper. But despite their diversity, riverine...
Abstract: Most fish recruitment models consider only one or a few drivers in isolation, rarely include species’ traits, and have limited relevance to riverine environments. Despite their diversity, riverine ...
37 citations
TL;DR: In this article, the authors show that Pacific cod stocks in the Gulf of Alaska experienced steep, unexpected declines following an unprecedented 3-year marine heatwave (i.e., "warm blob") from 2014 to 2016.
Abstract: Pacific cod (Gadus macrocephalus) stocks in the Gulf of Alaska experienced steep, unexpected declines following an unprecedented 3-year marine heatwave (i.e., “warm blob”) from 2014 to 2016. We con...
29 citations
TL;DR: Spatiotemporal predictions of bycatch (i.e., catch of nontargeted species) have shown promise as dynamic ocean management tools for reducing bycatch.
Abstract: Spatiotemporal predictions of bycatch (i.e., catch of nontargeted species) have shown promise as dynamic ocean management tools for reducing bycatch. However, which spatiotemporal model framework t...
29 citations
TL;DR: Determination of population structure and stock identification is a ubiquitous problem in fisheries assessment and management and Pacific salmon fishery management regimes are evolving to require high levels of precision.
Abstract: Determination of population structure and stock identification is a ubiquitous problem in fisheries assessment and management. Pacific salmon fishery management regimes are evolving to require high...
29 citations
TL;DR: In this paper, the authors demonstrate the relationship between hydrostatic pressure and total dissolved gas supersaturation in fish and show that it is known to protect fish from damage by TDG supersaturation.
Abstract: Hydrostatic pressure is known to protect fish from damage by total dissolved gas (TDG) supersaturation, but empirical relationships are lacking. In this study we demonstrate the relationship betwee...
29 citations
TL;DR: Aquatic environmental DNA surveys are sometimes impacted by polymerase chain reaction (PCR) inhibitors, and varying concentrations of different inhibitors (humic, phytic, and tannic) are tested.
Abstract: Aquatic environmental DNA (eDNA) surveys are sometimes impacted by polymerase chain reaction (PCR) inhibitors. We tested varying concentrations of different inhibitors (humic, phytic, and tannic ac...
28 citations
TL;DR: Chinook salmon (Oncorhynchus tshawytscha) are migratory fish that are highly valued for subsistence, sport, and commercial fisheries throughout their native range.
Abstract: Chinook salmon (Oncorhynchus tshawytscha) are migratory fish that are highly valued for subsistence, sport, and commercial fisheries throughout their native range. Populations of Chinook salmon in ...
28 citations
TL;DR: Invasive species and climate change are leading threats to freshwater ecosystems as discussed by the authors, and nonnative fishes are a critical consideration in salmon recovery in the Columbia River Basin (CRB), yet managers l...
Abstract: Invasive species and climate change are leading threats to freshwater ecosystems. In the Columbia River Basin (CRB), nonnative fishes are a critical consideration in salmon recovery, yet managers l...
TL;DR: The relationship between angler catch rates and fish abundance can contribute to or hinder sustainable exploitation of fisheries depending on whether catch rates are proportional to fish abundance as discussed by the authors, and the relationship between catch rate and abundance can be found in the literature.
Abstract: The relationship between angler catch rates and fish abundance can contribute to or hinder sustainable exploitation of fisheries depending on whether catch rates are proportional to fish abundance ...
TL;DR: While conservation and fisheries management is often concerned with changes in population abundance and distribution, shifts in population age–size structure are commonly observed in response to climate change.
Abstract: While conservation and fisheries management are often concerned with changes in population abundance and distribution, shifts in population age–size structure are commonly observed in response to h...
TL;DR: In this article, the performance of different acoustic telemetry systems is evaluated across species of aquatic organisms in the wild, and different systems are evaluated across different species of fishes and amphibians.
Abstract: Acoustic telemetry represents the state-of-the-art technology for monitoring behaviour of aquatic organisms in the wild. Yet, the performance of different systems is rarely evaluated across species...
TL;DR: The assignment of individual fish to its stock of origin is important for reliable stock assessment and fisheries management.
Abstract: The assignment of individual fish to its stock of origin is important for reliable stock assessment and fisheries management. Otolith shape is commonly used as the marker of distinct stocks in disc...
TL;DR: This article used data from 47 North American sockeye salmon (Onc...) and found that their productivity is influenced by ocean conditions and interspecific interactions, yet their combined effects are poorly understood.
Abstract: Pacific salmon productivity is influenced by ocean conditions and interspecific interactions, yet their combined effects are poorly understood. Using data from 47 North American sockeye salmon (Onc...
TL;DR: In this paper, the ecological impacts of spills of diluted bitumen in freshwater environments remain poorly understood, and the authors simulated the effects of bitumen spills on the ecology of lakes and rivers.
Abstract: Heavy crude oil transportation over land is increasing, yet the ecological impacts of spills, particularly of diluted bitumen, in freshwater environments remain poorly understood. We simulated spil...
TL;DR: This work analyzed four decades of presence–absence data from a fishery-independent survey to characterize the long-term phenology of river herring (alewife, Alosa pseudoharengus; and blueback herring, Al...
Abstract: We analyzed four decades of presence–absence data from a fishery-independent survey to characterize the long-term phenology of river herring (alewife, Alosa pseudoharengus; and blueback herring, Al...
TL;DR: Analysis of the response of imperiled desert fishes to an invasive brown and rainbow trout suppression program in a Colorado River tributary shows efforts to mimic natural flow and thermal regimes may allow rapid and widespread native fish recovery.
Abstract: Recovery of imperiled fishes can be achieved through suppression of invasives, but outcomes may vary with environmental conditions. We studied the response of imperiled desert fishes to an invasive...
TL;DR: Investigation of food-web changes in response to invasive species expansion in a Lower Colorado River tributary indicated species displacement may result from competitive or consumptive interactions, and stable isotope analysis in preremoval assessments provided opportunities to identify asymmetric interactions.
Abstract: Food-web investigations inform management strategies by exposing potential interactions between native and nonnative species and anticipating likely outcomes associated with species removal efforts...
TL;DR: The size selectivity of four codends were compared in the Gulf of St. Lawrence, Canada, redfish fishery (Sebastes mentella), including the regulated diamond mesh codend with a mesh opening of 90 mm.
Abstract: The size selectivity of four codends were compared in the Gulf of St. Lawrence, Canada, redfish fishery (Sebastes mentella), including the regulated diamond mesh codend with a mesh opening of 90 mm...
TL;DR: In this paper, the authors developed a model for investigating spatiotemporal dynamics of fish populations under the influence of both fishing and the environment, which simulates age-structured population dy...
Abstract: SEAPODYM is a model developed for investigating spatiotemporal dynamics of fish populations under the influence of both fishing and the environment. The model simulates age-structured population dy...
TL;DR: In this article, the authors examined the proportion of Oncorhynchus spp. that are sensitive to warm water (>18 °C), with a range of consequences from decreased spawning success to early mortality.
Abstract: Migrating adult Pacific salmon (Oncorhynchus spp.) are sensitive to warm water (>18 °C), with a range of consequences from decreased spawning success to early mortality. We examined the proportion ...
TL;DR: Estimates of age and growth of yellowfin and bigeye tuna remain problematic because validation of growth zone deposition (opaque and translucent) has not been validated.
Abstract: Estimates of age and growth of yellowfin (Thunnus albacares) and bigeye (Thunnus obesus) tuna remain problematic because validation of growth zone deposition (opaque and translucent) has not been p...
TL;DR: In passive fisheries, such as angling, the fishing success depends on the ultimate decision of a fish to ingest the bait, based on an individual’s internal state, previous experience, and threat level.
Abstract: In passive fisheries, such as angling, the fishing success depends on the ultimate decision of a fish to ingest the bait, based on an individual’s internal state, previous experience, and threat pe...
TL;DR: Two primary goals in fisheries research are to (i) understand how habitat and environmental conditions influence the distribution of fishes across the landscape and (ii) make predictions about how to make predictions as mentioned in this paper.
Abstract: Two primary goals in fisheries research are to (i) understand how habitat and environmental conditions influence the distribution of fishes across the landscape and (ii) make predictions about how ...
TL;DR: In this paper, the authors address singular stressors independently in marine, estuarine, and freshwater realms, but share interdependent fisheries management goals, but address singular stressesors independently.
Abstract: Fish face many anthropogenic stressors. Authorities in marine, estuarine, and freshwater realms often share interdependent fisheries management goals, but address singular stressors independently. ...
TL;DR: It is found that female Pacific salmon have higher mortality than males during their once-in-a-lifetime upriver spawning migration, but the proximate cause is not known.
Abstract: Numerous laboratory and field studies have found that female Pacific salmon have higher mortality than males during their once-in-a-lifetime upriver spawning migration. However, the proximate cause...
TL;DR: In this article, the authors explored a unique scenario where alien species may be a valuable resource for marine fisheries, yet their contribution to the catch might be balanced by negative effects on indigenous species.
Abstract: Alien species may be a valuable resource for marine fisheries, yet their contribution to the catch might be balanced by negative effects on indigenous species. In this study, we explored a unique h...
TL;DR: Yellowstone Lake in Yellowstone National Park, USA, has the longest ongoing suppression program for non-native lake trout (Salvelinus namaycush) in the western USA as mentioned in this paper.
Abstract: Yellowstone Lake in Yellowstone National Park, USA, has the longest ongoing suppression program for non-native lake trout (Salvelinus namaycush) in the western USA. Harvest data from the suppressio...