Fish Ecology and Management Studies

Salmonid science on the move: Twenty years of research through the lens of early career researchers

This review analyzes 20 years of salmonid research through early-career researchers' contributions, identifying trends, gaps, and future directions in the field.

Climate-driven fitness decline in Japanese Chum Salmon reshapes North Pacific salmon biogeography, with reproductive consequences: A Bayesian network analysis

The paper uses Bayesian networks to show climate-driven fitness decline in Japanese Chum Salmon affects reproductive traits and reshapes salmon biogeography.

Quantifying Exposure of Pacific Salmon and Steelhead to Climate Change in the Fraser River basin

This study quantifies climate change exposure for salmon and steelhead populations in the Fraser River basin, identifying lake-type sockeye as most exposed due to high stream temperatures during critical life stages.

Anthropogenic-driven loss of an adaptive radiation reduces thermal response diversity

The paper shows that loss of endemic species due to human activity reduces thermal response diversity in lake ecosystems, highlighting the role of evolutionary diversification in maintaining ecosystem stability.

Temperature and flow impacts on spawner-to-fry production in Okanagan sockeye salmon

This study evaluates how flow and water temperature during migration and incubation affect spawner-to-fry production in Okanagan sockeye salmon, finding that flow management has increased production and contributed to population recovery.

Winter-run Chinook salmon juvenile recruitment and early life history response to flow in a heavily altered tailwater

The paper evaluates how flow, temperature, and spawner abundance affect juvenile Chinook salmon production and life history in a dammed river system.

Inverted trophic pyramids and transient fish community reorganization in large reservoirs

This study tracks trophic dynamics in reservoirs over 20 years, finding transient top-heaviness in fish communities following dam construction.

Passage through submersible and Archimedes pumps results in decreased migration survival in coho salmon yearlings

This study evaluates the survival and behavior of coho salmon yearlings passing through two types of flood-control pumps, finding that while open-Archimedes pumps improve survival compared to conventional radial pumps, they still cause significant latent mortality.

Reactive persistence of riverine metapopulations

This study models reactive persistence in riverine metapopulations, showing that extinction-bound populations can temporarily persist due to ecohydrological conditions and perturbations.

Trends and drivers of prairie stream fish community persistence: implications for climate refugia

The paper analyzes fish community changes in prairie streams, finding that 56% turnover occurred due to species loss and colonization, with cool water temperatures mitigating impacts of agriculture.

Pumping stations negatively affect the distribution of critically endangered European eel (Anguilla anguilla); a landscape-scale study using environmental DNA metabarcoding

This study uses environmental DNA metabarcoding to assess how pumping stations affect European eel distribution and fish species richness in wetland catchments.

eDNA reveals urban habitat-specific sorting of a mixed regional fish fauna into distinct biodiversity and life-history assemblages

The paper uses eDNA data to show urban aquatic habitats sort mixed regional fish species into distinct biodiversity and life-history assemblages based on habitat characteristics.

Bridging Ecological Inference and Decision Optimization for Conservation Using Artificial Intelligence

This paper introduces an IPM-DRL framework that combines integrated population models with deep reinforcement learning to optimize conservation decisions for endangered species, outperforming heuristic approaches in simulation.

Predicting trophic links across freshwater fish food webs from species traits

The paper predicts trophic links in freshwater fish food webs using species traits, finding that body mass ratios and FishBase traits perform well, but cross-region predictions are poor.

Freshwater biodiversity is not adequately addressed by the current protected areas of the Caribbean biodiversity hotspot

This study assesses the effectiveness of protected areas in Cuba for freshwater biodiversity, finding major representation gaps and suggesting that expanding or redesigning the network is needed to meet conservation targets.

Smolt migration in relation to latitude, season and migratory distance

This study examines how latitude, season, and migratory distance affect smolt migration timing in sea trout across Europe, finding geographic and individual influences on migration patterns.

Spawning Drivers of Female Atlantic Sturgeon (Acipenser oxyrinchus oxyrinchus) in the James River: A Fine-Scale Temporal Analysis

This study predicts Atlantic Sturgeon egg release timing using acoustic telemetry and environmental data to inform conservation efforts.

Realistic basin shape variation modulates local riverine biodiversity via altered connectivity

The paper shows that river basin shape affects fish biodiversity by altering connectivity, with elongated basins having lower species richness and higher turnover.

Streamflow drought limits fish production across river ecosystems

The paper shows that declining streamflow reduces fish production by limiting juvenile recruitment, with severe drought reducing production by up to 90%.

Fine-scale movements and habitat use of fish in intermittent rivers: Behavioural insights from drying refuge pools

The paper studies fish behavior in drying refuge pools of intermittent rivers, finding that body size influences habitat use and movement patterns, with drying history affecting behavior even after rewetting.

Status of Round Goby Invasion Fronts in New York and Quebec: Implications for Lake Champlain

This paper tracks the spread of invasive round goby in New York and Quebec, finding their presence near Lake Champlain and linking water temperature to their habitat use.

Feeding ecology and ecological risks of the invasive fish Coreoperca herzi revealed by gut content DNA and environmental DNA metabarcoding

This study uses gut content and environmental DNA metabarcoding to assess the feeding ecology and ecological risks of the invasive Korean perch in Japan.

Insights on Human Dimensions of Freshwater Fish Conservation in Jharkhand and Bihar, India

This study examines stakeholder attitudes and social factors influencing freshwater fish conservation in Jharkhand and Bihar, identifying key challenges and opportunities for participatory conservation.

Do anglers take the bait? Anglers' perceptions about fluvial barriers in three river basins in Northern Spain

This study examines anglers' perceptions of river barriers in Northern Spain and finds they have lower ecological awareness and more misconceptions compared to non-anglers.

Quicklime-based eradication attempt of Xenopus laevis as a model for controlling pondscape invasions

The paper evaluates quicklime as a method to eradicate invasive Xenopus laevis in ponds, showing reduced eDNA levels but partial recovery.

Intrinsic fitness differences outweigh environmental matching in shaping introduction outcomes in nature

This study introduces >12,000 threespine stickleback into nine lakes to test if environmental matching or intrinsic population traits predict introduction success, finding intrinsic traits are more important.

Combining participatory mapping and oral histories of veteran fishers to identify long-term environmental change in a nationally significant river

This study uses oral histories and participatory mapping from veteran fishers to identify long-term environmental changes in the Rakaia River, highlighting policy and monitoring gaps.

Integrating Biological and Machine Learning Models for Rainbow Trout Growth: Balancing Accuracy and Interpretability

The paper evaluates hybrid models combining biological and machine learning approaches for predicting rainbow trout growth, showing significant improvements in accuracy and interpretability.

Environmental stress amplifies competitive asymmetry and drives divergent hybrid zone outcomes

The paper tests how environmental stress affects competitive asymmetry in two hybrid darter species, showing that stress amplifies competition and leads to different hybrid zone outcomes.

Application of CMSY method to estimate biological reference points of Piracatinga (Calophysus macropterus Lichtenstein, 1819) from the upper Solimoes River in the Amazon Basin

This study applies the CMSY method to estimate biological reference points for Piracatinga in the Amazon Basin, finding it in a sustainable state but recommending precautionary measures.