NDLI: Multiple driving factors explain spatial and temporal variability in coral calcification rates on the Bermuda platform

Content Provider	Springer Nature Link
Author	Venti, A. Andersson, A. Langdon, C.
Copyright Year	2014
Abstract	Experimental studies have shown that coral calcification rates are dependent on light, nutrients, food availability, temperature, and seawater aragonite saturation (Ω arag), but the relative importance of each parameter in natural settings remains uncertain. In this study, we applied Calcein fluorescent dyes as time indicators within the skeleton of coral colonies (n = 3) of Porites astreoides and Diploria strigosa at three study sites distributed across the northern Bermuda coral reef platform. We evaluated the correlation between seasonal average growth rates based on coral density and extension rates with average temperature, light, and seawater Ω arag in an effort to decipher the relative importance of each parameter. The results show significant seasonal differences among coral calcification rates ranging from summer maximums of 243 ± 58 and 274 ± 57 mmol CaCO3 m−2 d−1 to winter minimums of 135 ± 39 and 101 ± 34 mmol CaCO3 m−2 d−1 for P. astreoides and D. strigosa, respectively. We also placed small coral colonies (n = 10) in transparent chambers and measured the instantaneous rate of calcification under light and dark treatments at the same study sites. The results showed that the skeletal growth of D. strigosa and P. astreoides, whether hourly or seasonal, was highly sensitive to Ω arag. We believe this high sensitivity, however, is misleading, due to covariance between light and Ω arag, with the former being the strongest driver of calcification variability. For the seasonal data, we assessed the impact that the observed seasonal differences in temperature (4.0 °C), light (5.1 mol photons m−2 d−1), and Ω arag (0.16 units) would have on coral growth rates based on established relationships derived from laboratory studies and found that they could account for approximately 44, 52, and 5 %, respectively, of the observed seasonal change of 81 ± 14 mmol CaCO3 m−2 d−1. Using short-term light and dark incubations, we show how the covariance of light and Ω arag can lead to the false conclusion that calcification is more sensitive to Ω arag than it really is.
Starting Page	979
Ending Page	997
Page Count	19
File Format	PDF
ISSN	07224028
Journal	Coral Reefs
Volume Number	33
Issue Number	4
e-ISSN	14320975
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2014-07-22
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Coral calcification Ocean acidification Bermuda Aragonite saturation state Freshwater & Marine Ecology Oceanography
Content Type	Text
Resource Type	Article
Subject	Aquatic Science

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Multiple driving factors explain spatial and temporal variability in coral calcification rates on the Bermuda platform

Erratum to: Multiple driving factors explain spatial and temporal variability in coral calcification rates on the Bermuda platform

Ocean acidification and calcifying reef organisms: a mesocosm investigation

A nonlinear calcification response to CO2-induced ocean acidification by the coral Oculina arbuscula

Is the response of coral calcification to seawater acidification related to nutrient loading?

Calcifying coral abundance near low-pH springs: implications for future ocean acidification

Effect of aragonite saturation state on settlement and post-settlement growth of Porites astreoides larvae

Environmental controls on daytime net community calcification on a Red Sea reef flat

Coral calcification responds to seawater acidification: a working hypothesis towards a physiological mechanism

Multiple driving factors explain spatial and temporal variability in coral calcification rates on the Bermuda platform

Similar Documents

Multiple driving factors explain spatial and temporal variability in coral calcification rates on the Bermuda platform

Erratum to: Multiple driving factors explain spatial and temporal variability in coral calcification rates on the Bermuda platform

Ocean acidification and calcifying reef organisms: a mesocosm investigation

A nonlinear calcification response to CO2-induced ocean acidification by the coral Oculina arbuscula

Is the response of coral calcification to seawater acidification related to nutrient loading?

Calcifying coral abundance near low-pH springs: implications for future ocean acidification

Effect of aragonite saturation state on settlement and post-settlement growth of Porites astreoides larvae

Environmental controls on daytime net community calcification on a Red Sea reef flat

Coral calcification responds to seawater acidification: a working hypothesis towards a physiological mechanism

Multiple driving factors explain spatial and temporal variability in coral calcification rates on the Bermuda platform