The movement ecology of fishes

Journal of Fish Biology, Год журнала: 2022, Номер 101(4), С. 756 - 779

Опубликована: Июль 5, 2022

Abstract Movement of fishes in the aquatic realm is fundamental to their ecology and survival. can be driven by a variety biological, physiological environmental factors occurring across all spatial temporal scales. The intrinsic capacity movement impact fish individually ( e.g. , foraging) with potential knock‐on effects throughout ecosystem food web dynamics) has garnered considerable interest field ecology. advancement technology recent decades, combination ever‐growing threats freshwater marine systems, further spurred empirical research theoretical considerations. Given rapid expansion within its significant role informing management conservation efforts, contemporary multidisciplinary review about various components influencing outstanding. Using an established conceptual framework for as guide i.e. Nathan et al. 2008: 19052), we synthesized individual that affect fishes. Specifically, internal energy acquisition, endocrinology, homeostasis) external (biotic abiotic) elements are discussed, well different processes influence individual‐level (or population) decisions, such navigation cues, motion capacity, propagation characteristics group behaviours. In addition drivers factors, also explored how associated strategies help survival optimizing other biological states. Next, identified increasingly being incorporated into highlighting inherent benefits spatio‐temporal behaviour imbues policy, regulatory, remediation planning. Finally, considered future evaluating ongoing technological innovations both challenges opportunities these advancements create scientists managers. As ecosystems continue face alarming climate (and human‐driven) issues animal movements, comprehensive assessment will instrumental developing plans promote sustainability measures resources.

Язык: Английский

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An ecohydrological typology for thermal refuges in streams and rivers

Ecohydrology, Год журнала: 2021, Номер 14(5)

Опубликована: Апрель 14, 2021

Abstract Thermal refuges are thermally distinct riverscape features used by aquatic organisms during unfavourable thermal events, facilitating resilience in marginal environments. However, the refuge concept is nebulous, and often interchangeable use of term ‘thermal refugia’ creates additional ambiguity. We argue that lexical differences resulting from divergent scholarly trainings hinder holistic understanding refuges; thus, existing studies would benefit a structured framework for conceptualization. Herein, we articulate an ecohydrological typology defining characterizing streams rivers identifying key hydrological characteristics variations ecological function described literature. concepts easily definable, measurable transferable across disciplines, riverscapes species to discriminate among types. Future work can our as basis more informed interdisciplinary discussion interpretation refuges' role through hypothesis‐driven research conservation‐focused management.

Язык: Английский

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One size does not fit all: variation in thermal eco-physiology among Pacific salmonids

Reviews in Fish Biology and Fisheries, Год журнала: 2021, Номер 31(1), С. 95 - 114

Опубликована: Янв. 7, 2021

Язык: Английский

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Behavioural thermoregulation in cold‐water freshwater fish: Innate resilience to climate warming?

Fish and Fisheries, Год журнала: 2022, Номер 24(1), С. 187 - 195

Опубликована: Ноя. 29, 2022

Behavioural thermoregulation enables ectotherms to access habitats providing conditions within their temperature optima, especially in periods of extreme thermal conditions, through adjustments behaviours that provide a "whole-body" response changes. Although freshwater fish have been detected as moving changes there is lack integrative studies synthesising the extent which this driven by behaviour across different species and spatial scales. A quantitative global synthesis behavioural revealed 77 studies, thermoregulatory movements were both vertically horizontally, from warm cool waters and, occasionally, converse. When moved cooler habitats, difference between these decreased with increasing latitude, juvenile non-migratory fishes tolerating greater differences than adult anadromous individuals. With most focused on assessing cold-water salmonids during summer periods, remains an outstanding need for work climatically vulnerable, non-salmonid understand how innate could facilitate population persistence warming conditions.

Язык: Английский

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Rising summer river water temperature across Canada: spatial patterns and hydroclimatic controls

Environmental Research Letters, Год журнала: 2024, Номер 19(4), С. 044058 - 044058

Опубликована: Март 21, 2024

Abstract Understanding the spatio-temporal variability of climate-induced river water temperature change is critical for identifying hotspots and assessing impacts on ecological socioeconomic systems. Here, we employ air2stream model reconstructed records 106 stations in Canada (Nash Sutcliffe coefficient goodness-of-fit: minimum = 0.79; median 0.93; maximum 0.97) to analyze summer changes over years 1980–2018. Results reveal widespread increases from June September, with significantly increasing trends about 40%–60% stations. Additionally, find rising 7-day occurrences 18 20 °C thresholds 30%–65% Furthermore, by employing Ward’s agglomerative hierarchical clustering machine learning (ML) method, identify eight regions spatially coherent change. We that south-east, coast northern prairies are high vulnerability because likely temperatures cold-water aquatic species. using random forests ML demonstrate mean air its primary drivers trends, respectively. Thus, projected enhanced increase across Canada, an amplified future warming can be expected, which could have severe consequences, particularly already thermally-stressed

Язык: Английский

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Elevated stream temperature, origin, and individual size influence Chinook salmon prespawn mortality across the Columbia River Basin

Fisheries Research, Год журнала: 2021, Номер 237, С. 105874 - 105874

Опубликована: Янв. 22, 2021

Язык: Английский

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Linking individual physiological indicators to the productivity of fish populations: A case study of Atlantic herring

Ecological Indicators, Год журнала: 2020, Номер 113, С. 106146 - 106146

Опубликована: Фев. 26, 2020

Physiological measures can help to identify environmental thresholds that constrain organismal-level performance. Relating these thresholds, in a cause-and-effect manner, long-term changes the vital rates (e.g. growth, survival, reproduction) of wild populations has potential generate robust science advice needed support conservation efforts. Here we investigate hypothesis decreasing annual productivity (i.e. larval and juvenile abundances) Western Baltic Spring-Spawning (WBSS) herring over last decade is linked warmer springs exceeding physiological optimum early life stages. First, used laboratory experiments optimal arrhythmia-inducing temperatures for cardiac function larvae (approx. 16 °C 21 °C, respectively), which were not significantly influenced by rearing temperature (7, 11 or 15 °C). These results matched well decreased growth determined at beyond 17 °C. Second, calculated thermal threshold index based on number days above during spawning time (March-June), increased from 1992 2017 major ground WBSS herring. Over same period, was correlated This finding suggests warming least partially responsible steady decline this population past decade. study adds growing body evidence measurements be as indicators resilience, knowledge gained translated into effective single-species (and eventually ecosystem-based) management.

Язык: Английский

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A Comprehensive Review of the Impacts of Climate Change on Salmon: Strengths and Weaknesses of the Literature by Life Stage

Fishes, Год журнала: 2023, Номер 8(6), С. 319 - 319

Опубликована: Июнь 16, 2023

As we confront novel environmental challenges, a full understanding of the physical and biological processes that govern species responses to climate change will help maintain biodiversity support conservation measures are more robust irreducible uncertainty. However, impacts so complex, literature on salmon trout is vast researchers decision makers scramble make sense it all. Therefore, conducted systematic review anadromous as resource for stakeholders, managers, researchers. We reviewed studies published from 2010 2021 address these fish organized them in database 1169 1853 papers. Papers labeled with keywords across eight categories related subject matter study methods. compared by process life stage used comparisons assess strengths weaknesses. then summarized expected phenotypic genetic management actions stage. Overall, found largest research gaps interactions, behavioral responses, effects carry over stages. With this collection literature, can better apply scarce resources, fill knowledge gaps, informed decisions do not ignore

Язык: Английский

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Mechanistic Simulations Suggest Riparian Restoration Can Partly Counteract Climate Impacts to Juvenile Salmon

JAWRA Journal of the American Water Resources Association, Год журнала: 2022, Номер 58(4), С. 525 - 546

Опубликована: Июнь 7, 2022

Abstract Climate change is reducing summertime water availability and elevating temperature, placing human consumptive needs in competition with of coldwater fishes. We worked natural resource managers the Snoqualmie River (Washington, USA) to develop riparian management scenarios, used a process‐based modeling system examine how threatened population Chinook salmon ( Oncorhynchus tschawytscha ) may respond climate whether restoration could reduce effects. Linking models global climate, regional hydrology, fish, we projected that streams would become warmer year‐round drier during summer, further stressing salmon. accelerated egg emergence, increased juvenile growth survival, outmigration sub‐yearling migrants. Growth was depressed for remaining instream summer (potential yearling migrants). Riparian counteracted ~10% increases affected similarly regardless buffers were partially or fully restored, whereas degradation warmed streams. mitigated effects on potential migrant size, but only minimally migrants (assessment metrics changed <2%). Our results will be useful watershed aligning priorities fish humans our framework can applied elsewhere.

Язык: Английский

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The Role of Cold-Water Thermal Refuges for Stream Salmonids in a Changing Climate—Experiences from Atlantic Canada

Fishes, Год журнала: 2023, Номер 8(9), С. 471 - 471

Опубликована: Сен. 21, 2023

Thermal refuges are becoming increasingly influential for dictating the population status and spatial distribution of cold-water stenotherm salmonids in mid- to southern extent their range. The global climate is predicted continue warm, therefore, overall thermal suitability freshwater habitats stream decline concert. However, river heterogeneity will offer considerable resiliency these populations. formed by many physical processes; common natural include cold tributary plumes, groundwater springs, alcoves, hyporheic upwellings. anthropogenically (such as stratified reservoirs or tailrace outflows) also exist hydropower-regulated rivers. significance depends on size temperature differential, but other habitat characteristics such depth, flow velocity, Froude number, biotic factors within refuges. Modern technologies drone-mounted infrared cameras remote sensing techniques allow efficient identification refuges, inexpensive options during ice cover using orthophotographs. Behavioural thermoregulation, i.e., aggregating can be either facultative obligate timing events governed life stage, species, population-specific physiologically regulated cumulative thresholds that inherently related recent history, hysteresis, each individual. Salmonids appear have an excellent cognition locating relocating largely affected availability warm-water period thermally stressed Gregarious behaviour norm salmonid fishes refuges; however, size/microhabitat hierarchy appears dictate within-refuge at micro-scale. There continues a great impetus protecting—and carefully determined cases creating—cold-water future. A thorough understanding what “goldilocks” refuge various different stages imperative restoration gaining popularity. Finally, disentangling roles climate-induced landscape activity-induced warming potential fluvial important ensure continued environmentally responsible activities future waterscapes.

Язык: Английский

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