Integrating physiology into movement ecology of large terrestrial mammals

Journal of Experimental Biology, Journal Year: 2025, Volume and Issue: 228(Suppl_1)

Published: Feb. 15, 2025

ABSTRACT Movement paths are influenced by external factors and depend on an individual's navigation capacity (Where to move?), motion (How move?) ultimately driven internal physiological state (Why move?). Despite physiology underlying most aspects of this movement ecology framework, the physiology–movement nexus remains understudied in large terrestrial mammals. Within Commentary, we highlight processes that underpin framework how integrating measurements can provide mechanistic insights may enhance our understanding drivers animal movement. We focus mammals, which well represented within literature but under-represented studies integrate state. Recent advances biologging technology allow for variables, such as heart rate body movements, be recorded remotely continuously free-living animals. Biologging temperature additional into states driving Body not only provides a measure thermal stress, also index wellbeing through quantification nutrition, hydration, reproductive disease drive movements. Integrating measures with fine-scale GPS locations causality improve movement, is crucial population performance monitoring reintroduction success. recommend baseline undertaken, linking mechanisms, development realistic predictive models conservation efforts Anthropocene.

Language: Английский

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Swimming behaviour of Atlantic salmon kelts migrating past a hydropower plant dam: Effects of hydraulics and dam operations

The Science of The Total Environment, Journal Year: 2024, Volume and Issue: 922, P. 171304 - 171304

Published: Feb. 27, 2024

Hydropower plants commonly impede the downstream migration of Atlantic salmon (Salmo salar) kelts. Thus, understanding effects hydraulic conditions on kelt behaviour and passage performance at dams is crucial for developing effective mitigation measures. In this study, we investigated influence swimming a Norwegian hydropower plant. We combined biological data from 48 kelts collected via acoustic telemetry with modelled using computational fluid dynamics. assessed metrics such as time-to-pass, total number detections, detections per day. Additionally, analysed depths speeds in relation to created by different dam operating conditions. found that operation schedule impacted kelts' ability find route past dam. Though could have passed throughout study period submerged pipe (which had seemingly sufficient discharge find), 98 % instead waited spill gate open partway through period. The depth analysis indicated diel variation, nearer water surface during night. speed increased increasing body length, particularly under high turbulence kinetic energy Furthermore, swam faster velocity increased, but slowed down again intensity increased. Our findings reveal operations This provides valuable insights strategies optimise improve fish performance, including need enough increase success will contribute sustainable management populations regulated rivers.

Language: Английский

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Advancing bioenergetics-based modeling to improve climate change projections of marine ecosystems

Marine Ecology Progress Series, Journal Year: 2024, Volume and Issue: 732, P. 193 - 221

Published: Jan. 31, 2024

Climate change has rapidly altered marine ecosystems and is expected to continue push systems species beyond historical baselines into novel conditions. Projecting responses of organisms populations these environmental conditions often requires extrapolations observed conditions, challenging the predictive limits statistical modeling capabilities. Bioenergetics provides mechanistic basis for projecting climate effects on living resources in a long history development, been applied widely fish other taxa. We provide our perspective 4 opportunities that will advance ability bioenergetics-based models depict changes productivity distribution fishes organisms, leading more robust projections impacts. These are (1) improved depiction bioenergetics processes derive realistic individual-level response(s) complex (2) innovations scaling project at population food web levels, (3) coupling between spatial dynamics better represent local- regional-scale differences distributions (4) model validation ensure next generation can be used with known sufficient confidence. Our focus specific enable critical advancements position community make accurate individuals, populations, webs, ecosystems.

Language: Английский

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Artificial structure selection by economically important reef fishes at North Carolina artificial reefs

Frontiers in Marine Science, Journal Year: 2024, Volume and Issue: 11

Published: April 11, 2024

Artificial reefs can play an important role in marine fisheries management by supplementing or enhancing natural habitats. Despite their increased use recent years, the choice of structures used at artificial remains largely haphazard due to lack information on reef structure performance. Few studies have examined different individual fish. From 2021-2022, we acoustically tagged 72 black sea bass ( Centropristis striata ), 34 gag Mycteroperca mircrolepis 27 greater amberjack Seriola dumerili nine almaco jack S. rivoliana and eight red snapper Lutjanus campechanus ) four complexes near Cape Lookout, North Carolina, U.S. Available consisted materials various sizes heights made concrete metal. We tracked fish using a fine-scale positioning system for ~100 days. Black exhibited high site fidelity where caught them, rarely moving away from that structure. The limited movement resulted low transition probabilities; conclude do not select particular structures. Gag moved distances routinely between them. Greater most within displaying circling behavior around were only species regularly off complexes. movements sites commonly directed surrounding shipwrecks. Whereas gag, snapper, jack, all available structures, they consistently selected relief such as vessels, more than other These results will be useful managers charged with decisions what types place supplement enhance habitat economically fishes.

Language: Английский

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Predicting near-term, out-of-sample fish passage, guidance, and movement across diverse river environments by cognitively relating momentary behavioral decisions to multiscale memories of past hydrodynamic experiences

Frontiers in Ecology and Evolution, Journal Year: 2023, Volume and Issue: 11

Published: June 15, 2023

Predicting the behavior of individuals acting under their own motivation is a challenge shared across multiple scientific fields, from economic to ecological systems. In rivers, fish frequently change orientation even when stimuli are unchanged, which makes understanding and predicting movement in time-varying environments near built infrastructure particularly challenging. Cognition central movement, our lack costly terms time resources needed design manage water operations that able meet needs human society while preserving valuable living resources. An open question how best cognitively account for multi-modal, -attribute, -alternative, context-dependent decision-making infrastructure. Here, we leverage agent- individual-based modeling techniques encode cognitive approach mechanistic operates at scale river engineered managed. Our uses Eulerian-Lagrangian-agent method (ELAM) interpret quantitatively predict passage/entrainment different conditions. A goal methodology theory equations can provide an interpretable version animal complex requires minimal number parameters order facilitate application new data real-world engineering management projects. We first describe concepts, theory, mathematics applicable animals aquatic, terrestrial, avian, subterranean domains. Then, detail juvenile Pacific salmonids Bay-Delta California. reproduce observations salmon with one field season measurements, year 2009, using five simulated responses 3-D hydrodynamics. ELAM model calibrated 2009 data, later season, 2014, included novel guidance boom not present 2009. Central model’s performance notion attuned more than hydrodynamic signal timescale. find multi-timescale perception disentangle multiplex signals inform context-based behavioral choice fish. Simulated make decisions within rapidly changing environment without global information, knowledge direction downriver/upriver, or path integration. The key speed, spatial gradient acceleration, swim bladder pressure. selective tidal stream transport superset fish-hydrodynamic repertoire reproduces passage dam reservoir environments. From ecology perspective, emerge each tailored suit animal’s recent past experience (localized environmental context). paths same local stimuli. findings demonstrate does always require maximum possible spatiotemporal resolution representing although there concomitant tradeoffs resolving features scales. show decision-support tool successfully operate outside calibration conditions, necessary attribute tools informing future actions world will invariably look past.

Language: Английский

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TrackdAT, an acoustic telemetry metadata dataset to support aquatic animal tracking research

Scientific Data, Journal Year: 2024, Volume and Issue: 11(1)

Published: Jan. 30, 2024

Abstract Data on the movement and space use of aquatic animals are crucial to understand complex interactions among biotic abiotic components ecosystems facilitate effective conservation management. Acoustic telemetry (AT) is a leading method for studying ecology worldwide, yet ability efficiently access study information from AT research currently lacking, limiting advancements in its application. Here, we describe TrackdAT, an open-source metadata dataset where parameters catalogued provide scientists, managers, other stakeholders with identify evaluate existing peer-reviewed research. Extracted encompasses key about biological technical aspects research, providing comprehensive summary TrackdAT hosts 2,412 journal articles published 1969 2022 spanning 614 species 380,289 tagged animals. has potential enable regional global mobilization knowledge, increased opportunities collaboration, greater stakeholder engagement, optimization future ecological

Language: Английский

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DiffusionFR: Species Recognition of Fish in Blurry Scenarios via Diffusion and Attention

Animals, Journal Year: 2024, Volume and Issue: 14(3), P. 499 - 499

Published: Feb. 2, 2024

Blurry scenarios, such as light reflections and water ripples, often affect the clarity signal-to-noise ratio of fish images, posing significant challenges for traditional deep learning models in accurately recognizing species. Firstly, rely on a large amount labeled data. However, it is difficult to label data blurry scenarios. Secondly, existing need be more effective processing bad, blurry, otherwise inadequate which an essential reason their low recognition rate. A method based diffusion model attention mechanism image DiffusionFR, proposed solve these problems improve performance species images This paper presents selection application this correcting technique. In method, two-stage network model, TSD, designed deblur scene pictures restore clarity, learnable module, LAM, intended accuracy recognition. addition, new dataset BlurryFish, was constructed used validate effectiveness combining from publicly available Fish4Knowledge. The experimental results demonstrate that DiffusionFR achieves outstanding various datasets. On original dataset, achieved highest training 97.55%, well Top-1 test score 92.02% Top-5 95.17%. Furthermore, nine datasets with reflection noise, mean values reached peak at 96.50%, while were 90.96% 94.12%, respectively. Similarly, three ripple 95.00%, 89.54% 92.73%, These showcases superior enhanced robustness handling noise.

Language: Английский

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Effect of exercise intensity on growth performance, serum biochemistry parameters, liver antioxidant capacity, and intestinal health of common carp (Cyprinus carpio) in recirculating aquaculture system

Aquaculture, Journal Year: 2024, Volume and Issue: unknown, P. 741631 - 741631

Published: Sept. 1, 2024

Language: Английский

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Sea turtles in the Atlantic and Indian Oceans, a step towards understanding bycatch and management of these species in tuna fisheries

Biological Conservation, Journal Year: 2025, Volume and Issue: 302, P. 110966 - 110966

Published: Jan. 10, 2025

Language: Английский

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Fish movement

Elsevier eBooks, Journal Year: 2025, Volume and Issue: unknown, P. 91 - 117

Published: Jan. 1, 2025

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