NDLI: Long-term records of coral calcification across the central Great Barrier Reef: assessing the impacts of river runoff and climate change

Content Provider	SpringerLink
Author	D’Olivo, J. P. McCulloch, M. T. Judd, K.
Copyright Year	2013
Abstract	Calcification rates are reported for 41 long-lived Porites corals from 7 reefs, in an inshore to offshore transect across the central Great Barrier Reef (GBR). Over multi-decadal timescales, corals in the mid-shelf (1947–2008) and outer reef (1952–2004) regions of the GBR exhibit a significant increase in calcification of 10.9 ± 1.1 % (1.4 ± 0.2 % per decade; ±1 SE) and 11.1 ± 3.9 % (2.1 ± 0.8 % per decade), respectively, while inner-shelf (1930–2008), reefs show a decline of 4.6 ± 1.3 % (0.6 ± 0.2 % per decade). This long-term decline in calcification for the inner GBR is attributed to the persistent ongoing effects of high sediment/nutrients loads from wet season river discharges, compounded by the effects of thermal stress, especially during the 1998 bleaching event. For the recent period (1990–2008), our data show recovery from the 1998 bleaching event, with no significant trend in the rates of calcification (1.1 ± 2.0 %) for the inner reefs, while corals from the mid-shelf central GBR show a decline of 3.3 ± 0.9 %. These results are in marked contrast to the extreme reef-wide declines of 14.2 % reported by De’ath et al. (2009) for the period of 1990–2005. The De’ath et al. (2009) results are, however, found to be compromised by the inclusion of incomplete final years, duplicated records, together with a bias toward inshore reefs strongly affected by the 1998 bleaching. Our new findings nevertheless continue to raise concerns, with the inner-shelf reefs continuing to show long-term declines in calcification consistent with increased disturbance from land-based effects. In contrast, the more ‘pristine’ mid- and outer-shelf reefs appear to be undergoing a transition from increasing to decreasing rates of calcification, possibly reflecting the effects of CO2-driven climate change. Our study highlights the importance of properly undertaken, regular assessments of coral calcification that are representative of the distinctive cross-shelf environments and discriminate between local disturbances and the global impacts of climate change and ocean acidification.
Starting Page	999
Ending Page	1012
Page Count	14
File Format	PDF
ISSN	07224028
Journal	Coral Reefs
Volume Number	32
Issue Number	4
e-ISSN	14320975
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2013-08-23
Publisher Place	Berlin, Heidelberg
Access Restriction	Subscribed
Subject Keyword	Coral calcification GBR Across-shelf Porites 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	Mr. Siddhartha Mukherjee siddhartha@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	ndl-support@iitkgp.ac.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Libarray 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

Long-term coral community records from Lugger Shoal on the terrigenous inner-shelf of the central Great Barrier Reef, Australia

Freshwater impacts in the central Great Barrier Reef: 1648–2011

Predicting outbreaks of a climate-driven coral disease in the Great Barrier Reef

Assessing loss of coral cover on Australia’s Great Barrier Reef over two decades, with implications for longer-term trends

Parrotfish predation on massive Porites on the Great Barrier Reef

Geomorphology and community structure of Middle Reef, central Great Barrier Reef, Australia: an inner-shelf turbid zone reef subject to episodic mortality events

Coral records of reef-water pH across the central Great Barrier Reef, Australia: Assessing the influence of river runoff on inshore reefs

Evaluation of annual resolution coral geochemical records as climate proxies in the Great Barrier Reef of Australia

Coral community responses to declining water quality: Whitsunday Islands, Great Barrier Reef, Australia

Long-term records of coral calcification across the central Great Barrier Reef: assessing the impacts of river runoff and climate change

Similar Documents

Long-term coral community records from Lugger Shoal on the terrigenous inner-shelf of the central Great Barrier Reef, Australia

Freshwater impacts in the central Great Barrier Reef: 1648–2011

Predicting outbreaks of a climate-driven coral disease in the Great Barrier Reef

Assessing loss of coral cover on Australia’s Great Barrier Reef over two decades, with implications for longer-term trends

Parrotfish predation on massive Porites on the Great Barrier Reef

Geomorphology and community structure of Middle Reef, central Great Barrier Reef, Australia: an inner-shelf turbid zone reef subject to episodic mortality events

Coral records of reef-water pH across the central Great Barrier Reef, Australia: Assessing the influence of river runoff on inshore reefs

Evaluation of annual resolution coral geochemical records as climate proxies in the Great Barrier Reef of Australia

Coral community responses to declining water quality: Whitsunday Islands, Great Barrier Reef, Australia

Long-term records of coral calcification across the central Great Barrier Reef: assessing the impacts of river runoff and climate change