English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

Rising levels of atmospheric carbon dioxide could be curbed by large-scale sequestration of CO2 in the deep sea. Such a solution requires prior assessment of the impact of hypercapnic, acidic sea- water on deep-sea fauna. Laboratory studies were con- ducted to assess the short-term hypercapnic tolerance of the deep-sea Tanner crab Chionoecetes tanneri, col- lected from 1000 m depth in Monterey Canyon off the coast of central California, USA. Hemolymph acid- base parameters were monitored over 24 h of exposure to seawater equilibrated with ~1% CO2 (seawater PCO2 ~6 torr or 0.8 kPa, pH 7.1), and compared with those of the shallow-living Dungeness crab Cancer magister. Short-term hypercapnia-induced acidosis in the he- molymph of Chionoecetes tanneri was almost uncom- pensated, with a net 24 h pH reduction of 0.32 units and a net bicarbonate accumulation of only 3 mM. Under simultaneous hypercapnia and hypoxia, short-term ex- tracellular acidosis in Chionoecetes tanneri was com- pletely uncompensated. In contrast, Cancer magister fully recovered its hemolymph pH over 24 h of hyper- capnic exposure by net accumulation of 12 mM bicar- bonate from the surrounding medium. The data sup- port the hypothesis that deep-sea animals, which are adapted to a stable environment and exhibit reduced metabolic rates, lack the short-term acid-base regula- tory capacity to cope with the acute hypercapnic stress that would accompany large-scale CO2 sequestration. Additionally, the data indicate that sequestration in oxy- gen-poor areas of the ocean would be even more detri- mental to deep-sea fauna.

Extracellular acidbase regulation during short-term hypercapnia is effective in a shallow-water crab, but ineffective in a deep-sea crab

Extracellular acidbase regulation during short-term hypercapnia is effective in a shallow-water crab, but ineffective in a deep-sea crab