Do you remember? Within-generation and transgenerational heat stress memory of recurring marine heatwaves in threespine stickleback

Proceedings of the Royal Society B Biological Sciences, Journal Year: 2025, Volume and Issue: 292(2040)

Published: Feb. 1, 2025

Marine heatwaves can have major and lasting effects on organism physiology species persistence. Such temperature extremes are increasing in frequency, with consecutive heatwave events already occurring within the lifetime of many organisms. Heat stress memory (thermal priming) by individuals is a potential within-generation response to cope recurring marine heatwaves. However, whether this form biological be inherited across generations not well known. We used three-generation experiment investigate individual transgenerational single fitness-related traits using stickleback (Gasterosteus aculeatus) as model species. exposed adults (both sexes) assessed female reproductive output both parent offspring generation, survival, growth behaviour establish holistic picture ectothermic fish. Exposure single, extreme lowered output, decreased exploratory behaviour, impeded capacity respond further thermal reduced long-term survival. prior experience (heat memory) mitigated some these at an (growth) (fecundity) level, indicating that experiencing frequency part ongoing climate change may better than previously thought.

Language: Английский

---

A global overview of marine heatwaves in a changing climate

Communications Earth & Environment, Journal Year: 2024, Volume and Issue: 5(1)

Published: Nov. 20, 2024

Abstract Marine heatwaves have profoundly impacted marine ecosystems over large areas of the world oceans, calling for improved understanding their dynamics and predictability. Here, we critically review recent substantial advances in this active area research, including exploration three-dimensional structure evolution these extremes, drivers, connection with other extremes ocean land, future projections, assessment predictability current prediction skill. To make progress on predicting projecting impacts, a more complete mechanistic full depth at relevant spatial temporal scales is needed, together models that can realistically capture leading mechanisms those scales. Sustained observing systems, as well measuring platforms be rapidly deployed, are essential to achieve comprehensive event characterizations while also chronicling evolving nature impacts our changing climate.

Language: Английский

---

Modeling the spatial distribution of numbers of coral reef fish species and community types in the Western Indian Ocean faunal province

Marine Ecology Progress Series, Journal Year: 2024, Volume and Issue: 730, P. 59 - 78

Published: Feb. 5, 2024

Predicting and mapping coral reef diversity at moderate scales can assist spatial planning prioritizing conservation activities. We made coarse-scale (6.25 km 2 ) predictive models for numbers of fish species community composition starting with a spatially complete database 70 environmental variables available 7039 mapped cells in the Western Indian Ocean. An ensemble model was created from process variable elimination selectivity to make best predictions irrespective human influences. This compared using preselected commonly used evaluate climate change fishing water quality Many (~27) contributed number models, but local biomass, depth, retention connectivity were dominant predictors. The key human-influenced included biomass distance populations, weaker associations sediments nutrients. Climate-influenced generally median sea surface temperature (SST) contributions declining order SST kurtosis, bimodality, excess summer heat, skewness, rate rise, cover. Community variability explained by richness axes damselfishes-angelfishes butterflyfishes-parrotfishes. Numbers damselfish-angelfish ecologically separated damselfishes declined increasing temperature, cumulative chronic stresses. Species butterflyfish-parrotfish butterflyfish acute variability, rise. Several hotspots found East African Coastal Current Ecoregion centered Tanzania, followed Mayotte, southern Kenya, northern Mozambique. If be maintained, broad distributions combined compensatory responses should maintain high ecological resilience other stressors.

Language: Английский

---

Persistence of fish populations to longer, more intense, and more frequent mass mortality events

Global Change Biology, Journal Year: 2024, Volume and Issue: 30(3)

Published: March 1, 2024

Abstract Over the last decades, mass mortality events have become increasingly common across taxa with sometimes devastating effects on population biomass. In aquatic environment, fish are sensitive to events, particularly at early life stages that crucial for dynamics. However, it has recently been shown fish, a single event in typically does not lead collapse. Moreover, frequency and intensity of extreme can cause mortality, such as marine heatwaves, increasing. Here, we show increasing may Since drivers diverse, often linked climate change, is challenging predict severity future events. As an alternative, quantify probability collapse depending well duration Based 39 species, increases frequency, intensity, addition, depends key traits natural recruitment variation, density dependence. The presented framework provides quantitative estimates sensitivity species these which paves way potential mitigation actions alleviate adverse impacts harvested populations globe.

Language: Английский

---

Arctic and Subarctic marine heatwaves and their ecological impacts

Frontiers in Environmental Science, Journal Year: 2025, Volume and Issue: 13

Published: Feb. 19, 2025

The Arctic and Subarctic seas are predicted to become hotspots for marine heatwaves (MHWs). High-latitude ecosystems face unique consequences from accelerated warming sea ice loss, challenging species adapted cold conditions. We review the literature on MHW characteristics ecological impacts in seas, contrast between Bering Sea Barents Sea. uncover pervasive of MHWs across widely different organism groups, including benthic foundation species, phytoplankton, zooplankton, fish, seabirds, mammals. marginal especially prevalent areas experiencing retreat, such as seasonal zones, highlighting complex interplay dynamics. Overall, few studies have documented high-latitude ecosystems, with notable exception Chukchi 2017–2019. Many their narrow thermal preferences, appear vulnerable MHWs, they might not access climate refugia, while boreal benefit MHWs. Sessile kelp seagrasses, at risk during although evidence remains limited. Reproductive failure mass mortality events been several Pacific (e.g., crabs). observed ecosystem-wide repercussions northern shifts plankton communities affecting entire food web. responses still fully understood, a need further research assess direct indirect various taxa improve predictive models better management conservation strategies. can also large ecosystem services socio-ecological systems, example, closures economically valuable culturally important fisheries, seen Alaska, degradation traditional ice-hunting practices, compromised wellbeing coastal communities. Large abrupt changes following underscore urgent adaptive strategies ongoing change.

Language: Английский

---

Effects of intermittent fasting on behavioral and physiological stress indicators in Pacific abalone during persistent ocean heat waves

Aquaculture, Journal Year: 2025, Volume and Issue: unknown, P. 742367 - 742367

Published: Feb. 1, 2025

Language: Английский

---

Climate Change, Sustainable Food Systems, and Community-Based Adaptation: Resilience Strategies in the Global South

Published: Jan. 1, 2025

Language: Английский

---

Subsurface heatwaves in lakes

Nature Climate Change, Journal Year: 2025, Volume and Issue: unknown

Published: April 10, 2025

Language: Английский

---

Attention-enhanced deep learning approach for marine heatwave forecasting

Acta Oceanologica Sinica, Journal Year: 2025, Volume and Issue: unknown

Published: April 15, 2025

Language: Английский

---

Seasonality and hydroclimatic variability shape the functional and taxonomic diversity of nearshore fish communities in glacierized estuaries of Alaska

Journal of Experimental Marine Biology and Ecology, Journal Year: 2025, Volume and Issue: 584, P. 152086 - 152086

Published: Feb. 16, 2025

Language: Английский

---