Hysteresis Between Coral Reef Calcification and the Seawater Aragonite Saturation State
Some predictions of how ocean acidification (OA) will affect coral reefs assume a linear functional relationship between the ambient seawater aragonite saturation state (Ωa) and net ecosystem calcification (NEC). We quantified NEC in a healthy coral reef lagoon in the Great Barrier Reef during diffe...
Main Authors: | , , , |
---|---|
Format: | Article in Journal/Newspaper |
Language: | unknown |
Published: |
NSUWorks
2013
|
Subjects: | |
Online Access: | https://nsuworks.nova.edu/occ_facarticles/1038 https://nsuworks.nova.edu/cgi/viewcontent.cgi?article=2031&context=occ_facarticles |
id |
ftnsoutheastern:oai:nsuworks.nova.edu:occ_facarticles-2031 |
---|---|
record_format |
openpolar |
spelling |
ftnsoutheastern:oai:nsuworks.nova.edu:occ_facarticles-2031 2023-05-15T17:50:10+02:00 Hysteresis Between Coral Reef Calcification and the Seawater Aragonite Saturation State McMahon, Ashly Santos, Isaac R. Cyronak, Tyler Eyre, Bradley D. 2013-08-01T07:00:00Z application/pdf https://nsuworks.nova.edu/occ_facarticles/1038 https://nsuworks.nova.edu/cgi/viewcontent.cgi?article=2031&context=occ_facarticles unknown NSUWorks https://nsuworks.nova.edu/occ_facarticles/1038 https://nsuworks.nova.edu/cgi/viewcontent.cgi?article=2031&context=occ_facarticles Marine & Environmental Sciences Faculty Articles Ocean acidification Permeable sediments Carbon dioxide Coastal waters Calcite Aragonite Marine Biology Oceanography and Atmospheric Sciences and Meteorology article 2013 ftnsoutheastern 2022-04-10T22:05:22Z Some predictions of how ocean acidification (OA) will affect coral reefs assume a linear functional relationship between the ambient seawater aragonite saturation state (Ωa) and net ecosystem calcification (NEC). We quantified NEC in a healthy coral reef lagoon in the Great Barrier Reef during different times of the day. Our observations revealed a diel hysteresis pattern in the NEC versus Ωa relationship, with peak NEC rates occurring before the Ωa peak and relatively steady nighttime NEC in spite of variable Ωa. Net ecosystem production had stronger correlations with NEC than light, temperature, nutrients, pH, and Ωa. The observed hysteresis may represent an overlooked challenge for predicting the effects of OA on coral reefs. If widespread, the hysteresis could prevent the use of a linear extrapolation to determine critical Ωa threshold levels required to shift coral reefs from a net calcifying to a net dissolving state. Article in Journal/Newspaper Ocean acidification Nova Southeastern University: NSU Works |
institution |
Open Polar |
collection |
Nova Southeastern University: NSU Works |
op_collection_id |
ftnsoutheastern |
language |
unknown |
topic |
Ocean acidification Permeable sediments Carbon dioxide Coastal waters Calcite Aragonite Marine Biology Oceanography and Atmospheric Sciences and Meteorology |
spellingShingle |
Ocean acidification Permeable sediments Carbon dioxide Coastal waters Calcite Aragonite Marine Biology Oceanography and Atmospheric Sciences and Meteorology McMahon, Ashly Santos, Isaac R. Cyronak, Tyler Eyre, Bradley D. Hysteresis Between Coral Reef Calcification and the Seawater Aragonite Saturation State |
topic_facet |
Ocean acidification Permeable sediments Carbon dioxide Coastal waters Calcite Aragonite Marine Biology Oceanography and Atmospheric Sciences and Meteorology |
description |
Some predictions of how ocean acidification (OA) will affect coral reefs assume a linear functional relationship between the ambient seawater aragonite saturation state (Ωa) and net ecosystem calcification (NEC). We quantified NEC in a healthy coral reef lagoon in the Great Barrier Reef during different times of the day. Our observations revealed a diel hysteresis pattern in the NEC versus Ωa relationship, with peak NEC rates occurring before the Ωa peak and relatively steady nighttime NEC in spite of variable Ωa. Net ecosystem production had stronger correlations with NEC than light, temperature, nutrients, pH, and Ωa. The observed hysteresis may represent an overlooked challenge for predicting the effects of OA on coral reefs. If widespread, the hysteresis could prevent the use of a linear extrapolation to determine critical Ωa threshold levels required to shift coral reefs from a net calcifying to a net dissolving state. |
format |
Article in Journal/Newspaper |
author |
McMahon, Ashly Santos, Isaac R. Cyronak, Tyler Eyre, Bradley D. |
author_facet |
McMahon, Ashly Santos, Isaac R. Cyronak, Tyler Eyre, Bradley D. |
author_sort |
McMahon, Ashly |
title |
Hysteresis Between Coral Reef Calcification and the Seawater Aragonite Saturation State |
title_short |
Hysteresis Between Coral Reef Calcification and the Seawater Aragonite Saturation State |
title_full |
Hysteresis Between Coral Reef Calcification and the Seawater Aragonite Saturation State |
title_fullStr |
Hysteresis Between Coral Reef Calcification and the Seawater Aragonite Saturation State |
title_full_unstemmed |
Hysteresis Between Coral Reef Calcification and the Seawater Aragonite Saturation State |
title_sort |
hysteresis between coral reef calcification and the seawater aragonite saturation state |
publisher |
NSUWorks |
publishDate |
2013 |
url |
https://nsuworks.nova.edu/occ_facarticles/1038 https://nsuworks.nova.edu/cgi/viewcontent.cgi?article=2031&context=occ_facarticles |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_source |
Marine & Environmental Sciences Faculty Articles |
op_relation |
https://nsuworks.nova.edu/occ_facarticles/1038 https://nsuworks.nova.edu/cgi/viewcontent.cgi?article=2031&context=occ_facarticles |
_version_ |
1766156802420899840 |