Ecological and Evolutionary Consequences of Environmental Change and Management Actions for Migrating Fish

Frontiers in Ecology and Evolution, Journal Year: 2019, Volume and Issue: 7

Published: July 10, 2019

Migration strategies in fishes comprise a rich, ecologically important, and socioeconomically valuable example of biological diversity. The variation flexibility migration is evident between within individuals, populations, species, thereby provides useful model system that continues to inform how ecological evolutionary processes mould biodiversity systems respond environmental heterogeneity change. Migrating are targeted by commercial recreational fishing impact the functioning aquatic ecosystems. Sadly, many species migrating fish under increasing threat exploitation, pollution, habitat destruction, dispersal barriers, overfishing, ongoing climate change brings modified, novel, more variable extreme conditions selection regimes. All this calls for protection, sustainable utilization adaptive management. However, situation complicated further actions aimed at mitigating devastating effects such threats. Changes river connectivity associated with removal barriers as dams construction fishways, together compensatory breeding supplemental stocking can on gene flow selection. How turn affects dynamics, genetic structure, diversity, potential, viability spawning populations remains largely unknown. In narrative review we describe discuss patterns, causes, consequences scientifically interesting concern key issues framework evolution maintenance We showcase solutions questions define - whether or not migrate, why where when migrate may depend individual characteristics conditions. explore links strategies, threats overexploitation, makeovers, management differently influence vulnerability depending their strategies. Our goal provide broad overview knowledge emerging area, spur future research development informed management, ultimately promote protection

Language: Английский

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Valuable but vulnerable: Over-fishing and under-management continue to threaten groupers so what now?

Marine Policy, Journal Year: 2020, Volume and Issue: 116, P. 103909 - 103909

Published: March 14, 2020

Language: Английский

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A global review of the critical link between river flows and productivity in marine fisheries

Reviews in Fish Biology and Fisheries, Journal Year: 2022, Volume and Issue: 32(3), P. 805 - 825

Published: March 24, 2022

Abstract Around 36,000 km 3 of freshwater flows through rivers and estuarine ecosystems enter the world’s coastal fishing regions every year. The flow sediments creates regional changes in circulation, stimulates marine productivity helps define hydrologic properties oceanic waters. These processes can affect different life stages species either directly, variations salinity temperature, or indirectly, due to availability food habitat. This paper reviews relationship between flowing ecosystems, variable associated with global capture fisheries. results a synthesis revealed that 72% representing 77% total catch (43 million tonnes) were linked river for at least some part their cycle. Insights into how fishery production varies globally indicates wild fisheries resources would benefit from an integrated planning management approach.

Language: Английский

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Reproduction of marine fishes

Elsevier eBooks, Journal Year: 2025, Volume and Issue: unknown, P. 143 - 159

Published: Jan. 1, 2025

Language: Английский

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Space oddity: The mission for spatial integration

Canadian Journal of Fisheries and Aquatic Sciences, Journal Year: 2017, Volume and Issue: 74(11), P. 1698 - 1716

Published: June 14, 2017

Fishery management decisions are commonly guided by stock assessment models that aggregate outputs across the spatial domain of species. With refined understanding population structures, scientists have begun to address how spatiotemporal mismatches among scale ecological processes, data collection programs, and methods (or assumptions) influence reliability and, ultimately, appropriateness regional fishery (e.g., assigning quotas). Development evaluation modeling techniques improve fisheries increased rapidly in recent years. We overview historical context science, highlight advances modeling, discuss been incorporated into process. Despite limited examples where used as basis for advice, continued investment fine-scale associated analyses will integration dynamics ecosystem-level interactions assessment. In near future, advice increasingly rely on from analyses.

Language: Английский

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The ocean’s movescape: fisheries management in the bio-logging decade (2018–2028)

ICES Journal of Marine Science, Journal Year: 2018, Volume and Issue: 76(2), P. 477 - 488

Published: Dec. 26, 2018

Although movement has always played an important role in fisheries science, patterns are changing with ocean conditions. This affects availability to capture, the spatial scale of needed governance, and our food supply. Technological advances make it possible track marine fish (and fishermen) ways not previously tracking data is expected grow exponentially over next ten years – bio-logging decade. In this article, we identify management needs that can help fill, ranging from: improved estimates natural mortality abundance providing basis for short-term closures (i.e. dynamic closures) conservation biodiversity hotspots migratory corridors. However, sheer size oceans, lack GPS capability, aspects life history traits (e.g., adult/offspring ratios, high rates) create challenges obtaining data. We address these forecast how they will be met 10 through increased use drones sensor networks, decreasing tag capacity trends, ICARUS initiative increase satellite capacity, connectivity between terrestrial researchers databases.

Language: Английский

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Nonlinear dynamics and noise in fisheries recruitment: A global meta‐analysis

Fish and Fisheries, Journal Year: 2018, Volume and Issue: 19(6), P. 964 - 973

Published: July 12, 2018

Abstract The relative importance of environmental and intrinsic controls on recruitment in fishes has been studied for over a century. Despite this, we are not much closer to predicting recruitment. Rather, recent analyses suggest that is virtually independent stock size and, instead, seems occur distinct regimes. This issue whether or subsequent production coupled highly relevant management. Here, apply empirical dynamical modelling ( EDM ) global database 185 fish populations address the questions variation (a) predictable (b) size. We find substantial fraction using only observed history fluctuations (~40% average). In addition, although often (107 stocks), alone explains very little recruitment; ~90% stocks analysed, forecasts have substantially lower prediction error than models based solely predictability varies across taxa improves with number generations sampled. light these results, will be greatest use managing relatively short‐lived species.

Language: Английский

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Spatial awareness: Good practices and pragmatic recommendations for developing spatially structured stock assessments

Fisheries Research, Journal Year: 2023, Volume and Issue: 264, P. 106703 - 106703

Published: April 7, 2023

Language: Английский

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Movescapes and eco‐evolutionary movement strategies in marine fish: Assessing a connectivity hotspot

Fish and Fisheries, Journal Year: 2021, Volume and Issue: 22(6), P. 1321 - 1344

Published: July 22, 2021

Abstract Data from the Integrated Tracking of Aquatic Animals in Gulf Mexico (iTAG) network, and sister networks, were used to evaluate fish movements Florida Keys—an extensive reef ecosystem just north Cuba connecting Atlantic Ocean Mexico. We analysed ~2 million detections for 23 species, ranging such as Nassau grouper ( Epinephelus striatus , Serranidae) migratory apex predators white sharks Carcharodon carcharias Lamnidae). To facilitate comparisons across we an eco‐evolutionary movement strategy framework that identified measurable traits their proximate ultimate drivers. Detectability was species‐specific quantified with a detection potential index. Life stages detected study area varied by species residency life stage. Four annual types follows: high site‐fidelity residents, range seasonal migrants general migrants. The endangered smalltooth sawfish Pristis pectinata Pristidae), migrant, exhibited greatest within‐ecosystem connectivity. Site attachment, stopover deep‐water migration behaviours differed between individuals, types. All migratory. General significantly larger than other types, life‐history trait combination is common but not exclusive, many small pelagics also migrate. Most teleosts associated spawning. As concerns grow over habitat biodiversity loss, multispecies movescapes, presented here, are expected play increasingly important role informing ecosystem‐based non‐extractive fisheries management strategies.

Language: Английский

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Oceans of plenty? Challenges, advancements, and future directions for the provision of evidence-based fisheries management advice

Reviews in Fish Biology and Fisheries, Journal Year: 2022, Volume and Issue: 33(2), P. 375 - 410

Published: Sept. 15, 2022

Language: Английский

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