Coral species-specific loss and physiological legacy effects are elicited by extended marine heatwave DOI Creative Commons
Emma Strand, Kevin H. Wong,

Alexa Farraj

et al.

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

Published: Sept. 22, 2023

Abstract Marine heatwaves are increasing in frequency and intensity, with potentially catastrophic consequences for marine ecosystems such as coral reefs. An extended heatwave recovery time-series that incorporates multiple stressors is environmentally realistic can provide enhanced predictive capacity performance under climate change conditions. We exposed common reef-building corals Hawai‘i, Montipora capitata Pocillopora acuta , to a 2-month period of high temperature pCO 2 conditions or ambient factorial design, followed by months High temperature, rather than drove multivariate physiology shifts through time both species, including decreases respiration rates endosymbiont densities. exhibited more significantly negatively altered physiology, substantially higher bleaching mortality M. . The sensitivity P. appears be driven baseline photosynthesis paired lower host antioxidant capacity, creating an increased oxidative stress. Thermal tolerance may partly due harboring mixture Cladocopium Durusdinium spp., whereas was dominated other distinct spp. Only survived the experiment, but physiological state remained diverged at end relative individuals experienced In future scenarios, particularly heatwaves, our results indicate species-specific loss symbiont differences well Symbiodiniaceae community compositions, surviving species experiencing legacies likely influence stress responses.

Language: Английский

Coral species-specific loss and physiological legacy effects are elicited by an extended marine heatwave DOI Creative Commons
Emma Strand, Kevin H. Wong,

Alexa Farraj

et al.

Journal of Experimental Biology, Journal Year: 2024, Volume and Issue: 227(11)

Published: May 22, 2024

Marine heatwaves are increasing in frequency and intensity, with potentially catastrophic consequences for marine ecosystems such as coral reefs. An extended heatwave recovery time-series that incorporates multiple stressors is environmentally realistic can provide enhanced predictive capacity performance under climate change conditions. We exposed common reef-building corals Hawai'i, Montipora capitata Pocillopora acuta, to a 2-month period of high temperature PCO2 conditions or ambient factorial design, followed by 2 months High temperature, rather than PCO2, drove multivariate physiology shifts through time both species, including decreases respiration rates endosymbiont densities. acuta exhibited more significantly negatively altered physiology, substantially higher bleaching mortality M. capitata. The sensitivity P. appears be driven baseline photosynthesis paired lower host antioxidant capacity, creating an increased oxidative stress. Thermal tolerance may partly due harboring mixture Cladocopium Durusdinium spp., whereas was dominated other distinct spp. Only survived the experiment, but physiological state heatwave-exposed remained diverged at end relative individuals experienced In future scenarios, particularly heatwaves, our results indicate species-specific loss symbiont differences well Symbiodiniaceae community compositions, surviving species experiencing legacies likely influence stress responses.

Language: Английский

Citations

4
Seasonal transcriptomic shifts reveal metabolic flexibility of chemosynthetic symbionts in an upwelling region DOI Creative Commons
Isidora Morel, Benedict Yuen, Luis H. Orellana

et al.

mSystems, Journal Year: 2025, Volume and Issue: unknown

Published: May 22, 2025

ABSTRACT Upwelling in the Tropical Eastern Pacific profoundly affects marine coastal ecosystems by driving drastic seasonal changes water temperature, oxygen levels, and nutrient availability. These conditions serve as a natural experiment that provides unique opportunity to study how animals their associated microorganisms respond face of environmental change. Lucinid bivalves host chemosynthetic Candidatus Thiodiazotropha symbionts equipped with diverse metabolic pathways for sulfur, carbon, nitrogen use. However, these employ toolkit changing environment remains poorly understood. To address this question, we conducted metagenomic metatranscriptomic analyses Ctena cf. galapagana before during Papagayo upwelling event Santa Elena Bay, Costa Rica. The C . were co-colonized mainly two Ca symbiont clades regardless sampling season. We observed concerted shift transcriptomic profiles both upwelling, suggesting energy source Dissimilatory methanol oxidation genes upregulated while sulfide upwelling. physiological potentially driven upwelling-induced sediment biogeochemistry resource Our findings highlight adaptability lucinid symbiosis crucial role flexibility resilience challenges. IMPORTANCE oceans are undergoing rapid change, together must adjust changes. While microbes known play critical animal health, only beginning understand symbiotic relationships help cope variability. Annual events cause abrupt increases availability productivity, temperature decrease. In study, investigated bacterial bivalve Pacific. symbionts, from genus Thiodiazotropha, (i.e., they use inorganic chemicals fix carbon) provide nutrition host. results show different sources response affect This underscores animal-microbe coping

Language: Английский

Citations

0
A high-precision interpretable framework for marine dissolved oxygen concentration inversion DOI Creative Commons
Xin Li, Zhenyi Liu,

Zongchi Yang

et al.

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

Published: May 31, 2024

Variations in Marine Dissolved Oxygen Concentrations (MDOC) play a critical role the study of marine ecosystems and global climate evolution. Although artificial intelligence methods, represented by deep learning, can enhance precision MDOC inversion, uninterpretability operational mechanism involved “black-box” often make process difficult to interpret. To address this issue, paper proposes high-precision interpretable framework (CDRP) for intelligent including Causal Discovery, Drift Detection, RuleFit Model, Post Hoc Analysis. The entire proposed is fully interpretable: (i) causal relationships between various elements are further clarified. (ii) During phase concept drift analysis, potential factors contributing changes data extracted. (iii) rules ensure computational transparency. (iv) hoc analysis provides quantitative interpretation from both local perspectives. Furthermore, we have derived conclusions about impacts elements, our maintains consistency with literature on MDOC. Meanwhile, CDRP also ensures inversion: PCMCI discovery eliminates interference weakly associated elements. Concept detection takes more representative key frames. achieves higher than other models. Experiments demonstrate that has reached optimal level single point buoy inversion task. Overall, interpretability while ensuring high precision.

Language: Английский

Citations

1
Severe cold-water bleaching of a deep-water reef underscores future challenges for Mesophotic Coral Ecosystems DOI Creative Commons
Alan Foreman, Nicolas Duprey, Matan Yuval

et al.

The Science of The Total Environment, Journal Year: 2024, Volume and Issue: 951, P. 175210 - 175210

Published: Aug. 3, 2024

Elevated sea surface temperatures are causing an increase in coral bleaching events worldwide, and represent existential threat to reefs. Early studies of Mesophotic Coral Ecosystems (MCEs) highlighted their potential as thermal refuges for shallow-water species the face predicted 21

Language: Английский

Citations

1
Ecophysiological, Transcriptomic and Metabolomic Analyses Shed Light on the Response Mechanism of Bruguiera Gymnorhiza To Upwelling Stress DOI
Mei‐Lin Wu, Xiaomei Li,

long wei

et al.

Published: Jan. 1, 2024

Download This Paper Open PDF in Browser Add to My Library Share: Permalink Using these links will ensure access this page indefinitely Copy URL DOI

Language: Английский

Citations

0
Unraveling the physiological responses of morphologically distinct corals to low oxygen DOI Creative Commons
Ying Long, Sutinee Sinutok, Pimchanok Buapet

et al.

PeerJ, Journal Year: 2024, Volume and Issue: 12, P. e18095 - e18095

Published: Sept. 23, 2024

Low oxygen in marine environments, intensified by climate change and local pollution, poses a substantial threat to global ecosystems, especially impacting vulnerable coral reefs causing metabolic crises bleaching-induced mortality. Yet, our understanding of the potential impacts tropical regions is incomplete. Furthermore, uncertainty surrounds physiological responses corals hypoxia anoxia conditions.

Language: Английский

Citations

0
Coral species-specific loss and physiological legacy effects are elicited by extended marine heatwave DOI Creative Commons
Emma Strand, Kevin H. Wong,

Alexa Farraj

et al.

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

Published: Sept. 22, 2023

Abstract Marine heatwaves are increasing in frequency and intensity, with potentially catastrophic consequences for marine ecosystems such as coral reefs. An extended heatwave recovery time-series that incorporates multiple stressors is environmentally realistic can provide enhanced predictive capacity performance under climate change conditions. We exposed common reef-building corals Hawai‘i, Montipora capitata Pocillopora acuta , to a 2-month period of high temperature pCO 2 conditions or ambient factorial design, followed by months High temperature, rather than drove multivariate physiology shifts through time both species, including decreases respiration rates endosymbiont densities. exhibited more significantly negatively altered physiology, substantially higher bleaching mortality M. . The sensitivity P. appears be driven baseline photosynthesis paired lower host antioxidant capacity, creating an increased oxidative stress. Thermal tolerance may partly due harboring mixture Cladocopium Durusdinium spp., whereas was dominated other distinct spp. Only survived the experiment, but physiological state remained diverged at end relative individuals experienced In future scenarios, particularly heatwaves, our results indicate species-specific loss symbiont differences well Symbiodiniaceae community compositions, surviving species experiencing legacies likely influence stress responses.

Language: Английский

Citations

0