Variability in storm season intensity modulates ocean acidification conditions in the northern Strait of Georgia

Scientific Reports, Journal Year: 2025, Volume and Issue: 15(1)

Published: Feb. 6, 2025

Large changes in marine CO2 chemistry manifest areas with weakly-buffered seawater where ocean acidification (OA) acts concert natural additions. These settings can exhibit periods of extreme OA the form multiple co-occurring stressors, including calcite undersaturation and low pH. Such conditions were observed northern Strait Georgia, on northeast Pacific coast, spanned a 3-year period. Here, we utilized an 8-year, highly-resolved record partial pressure total dissolved inorganic carbon to decompose drivers this OA. We find that variability storm season intensity shaped extent conservative mixing biogeochemical such manifests arise setting. Extreme manifested during years weak seasons due direct indirect factors reduced impact mixing. This sensitivity highlights how vulnerable Georgia is subtle environmental forcing provides some predictive capacity for over coming year. results illustrate not "slow burn" process within settings, but rather invokes intensification poorly understood biological implications.

Language: Английский

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Advancing an integrated understanding of land–ocean connections in shaping the marine ecosystems of coastal temperate rainforest ecoregions

Limnology and Oceanography, Journal Year: 2024, Volume and Issue: 69(12), P. 3061 - 3096

Published: Nov. 18, 2024

Abstract Land and ocean ecosystems are strongly connected mutually interactive. As climate changes other anthropogenic stressors intensify, the complex pathways that link these systems will strengthen or weaken in ways currently beyond reliable prediction. In this review we offer a framework of land–ocean couplings their role shaping marine coastal temperate rainforest (CTR) ecoregions, where high freshwater materials flux result particularly strong connections. Using largest contiguous expanse CTR on Earth—the Northeast Pacific (NPCTR)—as case study, integrate current understanding spatial temporal scales interacting processes across continuum, examine how structure defining features from nearshore to offshore domains. We look ahead potential effects coupled meta‐ecosystem. Finally, key data gaps provide research recommendations for an integrated, transdisciplinary approach with intent guide future evaluations management ongoing impacts NPCTR CTRs globally. light extreme events including heatwaves, fire, flooding, which occurring almost annually, integrative agenda is not only necessary but urgent.

Language: Английский

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Predictable patterns within the kelp forest can indirectly create temporary refugia from ocean acidification

The Science of The Total Environment, Journal Year: 2024, Volume and Issue: 945, P. 174065 - 174065

Published: June 17, 2024

Kelps are recognized for providing many ecosystem services in coastal areas and considered ocean acidification (OA) mitigation. However, assessing OA modification requires an understanding of the multiple parameters involved carbonate chemistry, especially highly dynamic systems. We studied effects sugar kelp (Saccharina latissima) on experimental farm at north end Hood Canal, Washington-a low retentive system. In this field mesocosm study, two oyster species (Magallana gigas, Ostrea lurida) were exposed locations mid, edge, outside array. The Head Sugar Kelp Farm Model outputs used to identify dominating factors spatial temporal dynamics, while wavelet spectrum analyses helped predictability patterns. This was linked measured biological responses (dissolution, growth, isotopes) organisms. Positioned area high (sub)-diel tidal fluxes with retention potential, there no measurable alterations seawater pH study site, demonstrating that array could not induce a direct mitigating effect against OA. beneficial calcifiers still observed, which causes: increased improved provisioning through kelp-derived particulate organic resource utilization as such, habitat suitability indirectly created refugia can serve analogue bay habitats where prevailing physical forcing drives chemical changes. Future macrophyte studies investigate should focus also importance patterns, additionally improve conditions marine vulnerable or compromised by OA, including aquaculture sustainability.

Language: Английский

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Ocean acidification thresholds for decapods are unresolved

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

Published: Nov. 15, 2024

A published analysis of ocean acidification thresholds for decapod crustaceans highlights data showing the negative effects low pH on many species. However, methods used in paper have substantial flaws that call into question proposed thresholds. The quantitative metrics calculated meta-analysis are uninformative with respect to sensitivity, which raises concerns about validity developed by expert opinion process. We recommend against using and a reanalysis identify new

Language: Английский

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