onr:"swepub:oai:gup.ub.gu.se/299517"
Search: onr:"swepub:oai:gup.ub.gu.se/299517" > Calcification and o...
- 1 of 1
- Previous record
- Next record
- To hitlist
Calcification and organic productivity at the world's southernmost coral reef
- Davis, K. L. (author)
- McMahon, A. (author)
- Correa, R. E. (author)
- show more...
- show less...
- (creator_code:org_t)
- Elsevier BV, 2020
- 2020
- English.
- In: Marine Chemistry. - : Elsevier BV. - 0304-4203. ; 227
- Journal article (peer-reviewed)
Abstract
Subject headings
Close
- Estimates of coral reef calcification and organic productivity provide valuable insight to community functionality and the response of an ecosystem to stress events. High-latitude coral reefs are expected to experience rapid changes in calcification rates and become refugia for tropical species following climate change and increasing bleaching events. Here, we estimate ecosystem-scale calcification and organic productivity at the world's southernmost coral reef using seawater carbon chemistry observations (Lord Howe Island, Australia). We reduce uncertainties in metabolic calculations by producing a detailed bathymetric model and deploying two current meters to refine residence time and volume estimates. Bathymetry-modelled transect depths ranged from 74% shallower to 20% deeper than depths averaged from reef crest/flat current meters, indicating that higher-resolution depth observations help to reduce uncertainties in reef metabolic calculations. Rates of ecosystem calcification were 56.6 +/- 14.8 mmol m(-2) d(-1) in the winter and 125.3 +/- 39.4 mmol m(-2) d(-1) in the summer. These rates are lower than most other high-latitude reefs according to our compilation of high-latitude coral ecosystem metabolism estimates. Coral cover ranged from 14.7 +/- 2.3% in winter to 19.8 +/- 2.1% in the summer. A concurrent bleaching event and cyclone occurred during summer sampling (February - March 2019), resulting in 47% of corals bleached at the study site and 2% mortality due to cyclonal damage. Therefore, it is likely that the summertime G(net) rates underestimate baseline calcification. Our results enable future assessments of long-term change, but do not resolve the impact of bleaching at Lord Howe Island.
Subject headings
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Klimatforskning (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Climate Research (hsv//eng)
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Oceanografi, hydrologi och vattenresurser (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Oceanography, Hydrology and Water Resources (hsv//eng)
Keyword
- Bleaching
- Benthic ecology
- Coral reef
- Cyclone
- lord howe island
- temporal variability
- community metabolism
- massive
- porites
- carbonic-acid
- growth
- seawater
- dissociation
- latitude
- dynamics
- Chemistry
- Oceanography
Publication and Content Type
- ref (subject category)
- art (subject category)
Find in a library
- Marine Chemistry (Search for host publication in LIBRIS)
To the university's database
- 1 of 1
- Previous record
- Next record
- To hitlist
Find more in SwePub
- By the author/editor
- Davis, K. L.
- McMahon, A.
- Correa, R. E.
- Santos, Isaac R.
- About the subject
-
- NATURAL SCIENCES
- NATURAL SCIENCES
- and Earth and Relate ...
- and Climate Research
-
- NATURAL SCIENCES
- NATURAL SCIENCES
- and Earth and Relate ...
- and Oceanography Hyd ...
- Articles in the publication
- Marine Chemistry
- By the university
- University of Gothenburg
Search outside SwePub
- Extend your search to:
- Google Book Search
- Google Scholar
Kungliga biblioteket hanterar dina personuppgifter i enlighet med EU:s dataskyddsförordning (2018), GDPR. Läs mer om hur det funkar här.
Så här hanterar KB dina uppgifter vid användning av denna tjänst.
- Copyright © LIBRIS - National Library Systems
- LIBRIS.kb.se
