Climatic limits to Atlantic salmon population fitness at continental scales DOI Open Access

Olivia F. Morris,

Hlynur Bárðarson, Alexia María González-Ferreras

et al.

bioRxiv (Cold Spring Harbor Laboratory), Journal Year: 2023, Volume and Issue: unknown

Published: Dec. 18, 2023

Abstract Anadromous fish populations are declining globally, partly due to acute pressure from rapid environmental change in their freshwater and marine habitats. A more mechanistic understanding of how climatic land use changes impact population-level fitness is needed mitigate these declines. Here we develop a model that successfully captures the thermal niche Atlantic salmon. This allows us predict combined effects two dominant threats this species: climate resource availability. Specifically, predicts 50% reduction metabolically optimal supply could constrict by ∼7°C. We also show daily seasonal temperature fluctuations have relatively minor impact. conservative increase 1.5°C global temperatures will cause declines for higher regimes, across levels. Our results provide new general insights into factors limiting distribution extant salmon populations. They highlight relative importance future warming, fluctuations, availability change.

Language: Английский

Effects of thermal fluctuations on biological processes: a meta-analysis of experiments manipulating thermal variability DOI Creative Commons
Margaret A. Slein, Joey R. Bernhardt, Mary I. O’Connor

et al.

Proceedings of the Royal Society B Biological Sciences, Journal Year: 2023, Volume and Issue: 290(1992)

Published: Feb. 8, 2023

Thermal variability is a key driver of ecological processes, affecting organisms and populations across multiple temporal scales. Despite the ubiquity variation, biologists lack quantitative synthesis observed consequences thermal wide range taxa, phenotypic traits experimental designs. Here, we conduct meta-analysis to investigate how properties organisms, their experienced regime whether in either past (prior an assay) or present (during affect performance relative experiencing constant environments. Our results—which draw upon 1712 effect sizes from 75 studies—indicate that effects are not unidirectional become more negative as mean temperature fluctuation increase. Exposure variation decreases greater extent than increases costs diminishing benefits broad set empirical studies. Further, identify life-history attributes predictably modify response variation. findings demonstrate on context-dependent, yet outcomes may be heightened warmer, variable climates.

Language: Английский

Citations

23
Interactions between temperature and nutrients determine the population dynamics of primary producers DOI
Carling Bieg, David A. Vasseur

Ecology Letters, Journal Year: 2024, Volume and Issue: 27(1)

Published: Jan. 1, 2024

Global change is rapidly and fundamentally altering many of the processes regulating flux energy throughout ecosystems, although researchers now understand effect temperature on key rates (such as aquatic primary productivity), theoretical foundation needed to generate forecasts biomass dynamics extinction risk remains underdeveloped. We develop new theory that describes interconnected effects nutrients phytoplankton populations show thermal response equilibrium (i.e. carrying capacity) always peaks at a lower than for productivity growth rate). This mismatch driven by differences in responses growth, death, per-capita impact nutrient pool, making our results highly general applicable widely used population models beyond phytoplankton. further non-equilibrium depend pace environmental relative underlying vital respond variable environments differently high versus low temperatures due asymmetries.

Language: Английский

Citations

7
Resistance of Posidonia oceanica seedlings to warming: Investigating the importance of the lag-phase duration between two heat events to thermo-priming DOI Creative Commons
Patrizia Stipcich, Arianna Pansini, Giulia Ceccherelli

et al.

Marine Pollution Bulletin, Journal Year: 2024, Volume and Issue: 204, P. 116515 - 116515

Published: May 25, 2024

The increase of marine heat waves (MHWs) occurrence is exacerbated in Mediterranean Sea and temperature resilience-enhancing strategies on key species, such as the seagrass Posidonia oceanica, need to be investigated. "Priming" describes a stimulus that prepares an organism for improved response upcoming environmental changes by triggering memory remains during lag-phase. aim this study, conducted Sardinia (Italy), was investigate whether development thermo-primed P. oceanica seedlings affected field simulated MHW depending duration After thermo-priming stimulus, had 0, 7 or 14 days lag-phase after that, each group, half experienced (the other served controls). Some did not experience either priming Results show any evidence triggered but they highlighted importance acclimation phase before highest temperature: gradual higher number leaves shorter leaf necrosis length compared between two events. Regardless MHWs slowed down root length. Considering fluctuations, testing different intensities necessary provide information about adaptive success species.

Language: Английский

Citations

5
Variable and mismatching temperature regimes impair song learning in zebra finches DOI Creative Commons
Maëlle Lefeuvre, ChuChu Lu, Carlos A. Botero

et al.

Animal Behaviour, Journal Year: 2025, Volume and Issue: 221, P. 123053 - 123053

Published: Jan. 23, 2025

Language: Английский

Citations

0
Non-negative matrix factorization reveals seasonal and sex-specific metabolic tactics in tropical tilapia DOI
Min‐Chen Wang, Ching‐Wei Wang, Fumiya Furukawa

et al.

Comparative Biochemistry and Physiology Part D Genomics and Proteomics, Journal Year: 2025, Volume and Issue: 55, P. 101448 - 101448

Published: Feb. 19, 2025

Language: Английский

Citations

0
Modelling the effects of diurnal temperature variation on malaria infection dynamics in mosquitoes DOI Creative Commons
Isaac J. Stopard, Antoine Sanou, Eunho Suh

et al.

Communications Biology, Journal Year: 2025, Volume and Issue: 8(1)

Published: April 8, 2025

Abstract Mosquito infection experiments that characterise how sporogony changes with temperature are increasingly being used to parameterise malaria transmission models. In these experiments, mosquitoes exposed a range of temperatures, each group experiencing single temperature. Diurnal variation can, however, affect the sporogonic cycle Plasmodium parasites. dissection data is not available for all profiles, so we investigate whether mathematical models mosquito parameterised constant thermal performance curves can predict effects diurnal variation. We use this model two key parameters governing disease transmission: human-to-mosquito probability and extrinsic incubation period – and, embed into simulate sporozoite prevalence without seasonal site in Burkina Faso. Simulations incorporating better laboratory mosquitoes, indicating be fluctuating temperatures. Including variation, did substantially improve predictive ability wild further research needed more settings.

Language: Английский

Citations

0
Mean daily temperatures predict the thermal limits of malaria transmission better than hourly rate summation. DOI
Marta S. Shocket, Joey R. Bernhardt, Kerri Miazgowicz

et al.

RePEc: Research Papers in Economics, Journal Year: 2025, Volume and Issue: 16(1), P. 3441 - 3441

Published: April 11, 2025

Language: Английский

Citations

0
Two Hypotheses About Climate Change and Species Distributions DOI Creative Commons
John M. Drake, John P. Wares, James E. Byers

et al.

Ecology Letters, Journal Year: 2025, Volume and Issue: 28(5)

Published: May 1, 2025

ABSTRACT Species' distributions are changing around the planet as a result of global climate change. Most research has focused on shifts in mean conditions, leaving effects increased environmental variability comparatively underexplored. This paper proposes two new macroecological hypotheses—the damping hypothesis and adaptation —to understand how ecological dynamics evolutionary history could influence biogeographic patterns being forced by contemporary large‐scale change across all major ecosystems. The predicts that species living deep water environments will be least affected increasing climate‐driven temperature compared with nearshore, intertidal terrestrial environments. opposite. Where available, we discuss existing evidence aligns these hypotheses propose ways which they may empirically tested.

Language: Английский

Citations

0
Reimagining species on the move across space and time DOI Creative Commons
Alexa Fredston, Morgan W. Tingley, Montague H. C. Neate‐Clegg

et al.

Trends in Ecology & Evolution, Journal Year: 2025, Volume and Issue: unknown

Published: May 1, 2025

Language: Английский

Citations

0
Combined effects of temperature and emersion-immersion cycles on metabolism and bioenergetics of the Pacific oyster Crassostrea (Magallana) gigas DOI Creative Commons
Torben Bruhns, Stefan Timm,

Nina Feußner

et al.

Marine Environmental Research, Journal Year: 2023, Volume and Issue: 192, P. 106231 - 106231

Published: Oct. 16, 2023

Life on tidal coasts presents physiological major challenges for sessile species. Fluctuations in oxygen and temperature can affect bioenergetics modulate metabolism redox balance, but their combined effects are not well understood. We investigated the of intermittent hypoxia (12h/12h) combination with different regimes (normal (15 °C), elevated (30 °C) fluctuating °C water/30 air)) Pacific oyster Crassostrea (Magallana) gigas. Fluctuating led to energetic costly metabolic rearrangements accumulation proteins tissues. Elevated high (60%) mortality oxidative damage survivors. Normal had no negative caused shifts. Our study shows plasticity response fluctuations indicates that adjustments deficiency strongly modulated by ambient temperature. Co-exposure constant demonstrates limits this adaptive plasticity.

Language: Английский

Citations

9