Ocean acidification stunts molluscan growth at CO2 seeps

The Science of The Total Environment, Journal Year: 2023, Volume and Issue: 873, P. 162293 - 162293

Published: Feb. 21, 2023

Language: Английский

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Impacts of ocean warming on echinoderms: A meta‐analysis

Ecology and Evolution, Journal Year: 2023, Volume and Issue: 13(8)

Published: Aug. 1, 2023

Rising ocean temperatures are threatening marine species and populations worldwide, ectothermic taxa particularly vulnerable. Echinoderms an ecologically important phylum of ectotherms shifts in their population dynamics can have profound impacts on the environment. The effects warming echinoderms highly variable across controlled laboratory-based studies. Accordingly, synthesis these studies will facilitate better understanding broad patterns responses to warming. Herein, a meta-analysis incorporating results 85 (710 individual responses) is presented, exploring various performance predictors. mean all magnitudes were compared multiple biological responses, ontogenetic life stages, taxonomic classes, regions, facilitated by multivariate linear mixed models. Further models conducted, which only incorporated greater than projected end-of-century annual at collection sites. This provides evidence that generally accelerate metabolic rate (+32%) reduce survival (-35%) echinoderms, from subtropical (-9%) tropical (-8%) regions be most relatively high vulnerability echinoderm larvae (-20%) indicates this stage may significant developmental bottleneck near-future, likely reducing successful recruitment into populations. Furthermore, asteroids appear class negatively affected elevated temperature (-30%). When considering representative climate change projections, negative asteroids, juveniles exacerbated (-51%, -34% -40% respectively). analyses enable predictions how keystone invasive perform warmer ocean, possible consequences for populations, communities ecosystems.

Language: Английский

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To live or let die? Epigenetic adaptations to climate change—a review

Current Zoology, Journal Year: 2024, Volume and Issue: 10(1)

Published: Jan. 1, 2024

Anthropogenic activities are responsible for a wide array of environmental disturbances that threaten biodiversity. Climate change, encompassing temperature increases, ocean acidification, increased salinity, droughts, and floods caused by frequent extreme weather events, represents one the most significant alterations. These drastic challenges pose ecological constraints, with over million species expected to disappear in coming years. Therefore, organisms must adapt or face potential extinctions. Adaptations can occur not only through genetic changes but also non-genetic mechanisms, which often confer faster acclimatization wider variability ranges than their counterparts. Among these mechanisms epigenetics defined as study molecules perpetuate alternative gene activity states context same DNA sequence. Epigenetics has received attention past decades, epigenetic sensitive cues, epimutations spread populations mutations. Epimutations be neutral, deleterious, adaptative transmitted subsequent generations, making them crucial factors both long- short-term responses fluctuations, such climate change. In this review, we compile existing evidence involvement adaptation change discuss derived perspectives remaining field epigenetics.

Language: Английский

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Impacts of Acclimation in Warm-Low pH Conditions on the Physiology of the Sea Urchin Heliocidaris erythrogramma and Carryover Effects for Juvenile Offspring

Frontiers in Marine Science, Journal Year: 2021, Volume and Issue: 7

Published: Jan. 21, 2021

Ocean warming (OW) and acidification (OA) affects nearly all aspects of marine organism physiology it is important to consider both stressors when predicting responses climate change. We investigated the effects long-term exposure OW OA on adults sea urchin, Heliocidaris erythrogramma , a species resident in southeast Australia hotspot. The urchins were slowly introduced stressor conditions laboratory over 7-week adjustment period three temperature (ambient, +2°C, +3°C) two pH (ambient: T 8.0; −0.4 units: 7.6) treatments. They then maintained natural pattern seasonal photoperiod change, fixed pH, for 22 weeks. Survival was monitored through week metabolic rate measured at 4 12 weeks acclimation, feeding ammonia excretion assimilation efficiency 13 Acclimation +3°C deleterious regardless pH. Mortality from 6 indicated that recent heatwaves are likely have been this species. +2°C did not affect survival. Increased decreased increased rates, with no effect acidification. While additively low 4, there difference between treatments 12, indicating physiological acclimation surviving stressful conditions. Regardless treatment, H. had net positive energy budget due limitation. To test parental offspring responses, acclimated reared juvenile stage Parental warming, but altered an increase rate. Our results show incorporation gradual environmental change can influence outcomes, consideration consequences changing

Language: Английский

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Transgenerational responses to seawater pH in the edible oyster, with implications for the mariculture of the species under future ocean acidification

The Science of The Total Environment, Journal Year: 2021, Volume and Issue: 782, P. 146704 - 146704

Published: March 27, 2021

Language: Английский

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