{"id":217,"date":"2021-06-23T08:37:24","date_gmt":"2021-06-23T08:37:24","guid":{"rendered":"https:\/\/blogs.napier.ac.uk\/enuapplyscience\/?p=217"},"modified":"2021-06-23T09:41:25","modified_gmt":"2021-06-23T09:41:25","slug":"marine-coastal-ecosystems-are-under-threat-from-oxygen-fluctuations","status":"publish","type":"post","link":"https:\/\/blogs.napier.ac.uk\/enuapplyscience\/2021\/06\/23\/marine-coastal-ecosystems-are-under-threat-from-oxygen-fluctuations\/","title":{"rendered":"Marine coastal organisms benefit from oxygen fluctuations"},"content":{"rendered":"

Fluctuations of oxygen levels in marine coastal ecosystems are important to determine the response to climate change\u00a0 of marine fauna.<\/p>\n

That is the finding of a paper published in June for The Royal Society, based on research involving Professor Karen Diele and Dr Marco Fusi, a postdoctoral fellow in the School of Applied Sciences at Edinburgh Napier University. Both have been working with Dr Jenny Booth , who is the paper\u2019s lead author, and Professor Christopher McQuaid of Rhodes University, South Africa. The experiments that led to the findings have been conducted in the aquarium facilities of the St Abbs Marine Station, on the south East coast of Scotland, in collaboration with Marine Station researcher \u00a0Erica Chapman.<\/p>\n

Coastal animals exist in habitats that are characterized by daily and seasonally fluctuation of environmental parameter:: for example, oxygen cycles vary between day and night and summer or winter.<\/p>\n

Marine species evolve in this fluctuating environments and they have developed strategies to exploit cycling environmental change.<\/p>\n

The team\u2019s research \u2013 entitled Diel oxygen fluctuation drives the thermal response and metabolic performance of coastal marine ectotherms<\/em><\/a> –<\/em> published in the Proceedings of the Royal Society B,\u00a0 shows that both velvet crabs and blue mussels normally exploit fluctuating daily oxygen supersaturation to cope with nightly oxygen undersaturation and overall to improve their thermal resistance.<\/p>\n

\"\"<\/p>\n

The experiments that led to the findings have been conducted in the aquarium facilities of the St Abbs Marine Station (c) Jenny Booth<\/em><\/p>\n

But as the environment alters at an increasingly fast pace, due to anthropogenic activity, the impact on natural feedback mechanisms is affecting the ability of these species to adapt to future thermal stress. The adverse impact is likely to be true for most coastal ectotherms, or animals that depend on external sources of body heat, as they rely on the same feedback mechanisms.<\/p>\n

\u201cThe increasing metabolic demand of animals under warming are sustained by producing periodic oxygen supersaturation through coastal primary producers,\u201d explains Marco Fusi. These are plants, algae and some bacteria that can photosynthesize.<\/p>\n

\u201cWe demonstrate that the provision and resultant variability of oxygen by primary production are important drivers of the thermal responses of coastal animals, and the intensified response we see is foreseen to become increasingly important under future climate change,\u201d adds Karen Diele.<\/p>\n

This thermal response of both plants and animals results from the complex interaction of several factors, beyond temperature alone. \u201cWhile primary producers will have their own specific responses to ocean warming and acidification, it is likely that coastal habitats such as seagrasses, kelp forests, mangroves and coral reefs will be important as refugia, where oxygen variation can drive the metabolic performance of animals in a changing world,\u201d adds Marco.<\/p>\n

\u201cAs primary producers, they are likely to have an increasingly important effect under climate warming; both on permanent residents and transient animals that use these habitats as nursery sites.<\/p>\n

The disappearance of diverse communities of macroalgae in coastal waters is therefore a threat to biodiversity, not only through habitat loss, but also through reduced oxygen variability and the effects of this on animal thermal responses.\u201d<\/p>\n

The full paper can be read here<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

Fluctuations of oxygen levels in marine coastal ecosystems are important to determine the response to climate change\u00a0 of marine fauna<\/p>\n","protected":false},"author":216,"featured_media":218,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[70,65,7],"tags":[87],"class_list":["post-217","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-70","category-marine-freshwater","category-research","tag-climate-change"],"yoast_head":"\nMarine coastal organisms benefit from oxygen fluctuations - The School of Applied Sciences<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/blogs.napier.ac.uk\/enuapplyscience\/2021\/06\/23\/marine-coastal-ecosystems-are-under-threat-from-oxygen-fluctuations\/\" \/>\n<meta property=\"og:locale\" content=\"en_GB\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Marine coastal organisms benefit from oxygen fluctuations - 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