Bleaching in larger benthic foraminifera from the Great Barrier Reef
Experiments were conducted to determine whether larger benthic foraminifera is prone to bleaching caused by increases in temperature and nutrient levels. The experiments aimed to characterise the physiological stress threatening these species, predicted to occur on tropical reef waters in the near future. Nutrient levels were chosen to represent naturally occurring nutrient concentrations during flood-plume events on the GBR, and temperatures were chosen to reflect current and future predictions for the GBR (Lough et al. 2006; Lough 2007).
Specimens of Amphistegina radiata and Heterostegina depressa were collected during dry season 2009 and wet season 2010, from the Whitsundays area nearby sites Double Cone Island, Border Island, Deloraine Island and Edward Island. Calcarina hispida specimens were collected from Heron Island 2009 and Calcarina mayorii from Magnetic Island. Daily average SST was obtained from AIMS AWS stations at Hardy Reef and Heron Island, temperature logger are Nelly Bay. Additional samplesof A. radiata and H. depressa were collected from Dent Island and Bait Reef.
A 6 day experiment with temperature manipulation were carried out with five individually set temperatures 23, 28, 30 32 and 33, exposing samples of A.radiata, H. depressa, and C. hispida. These experiments were repeated three times for A. radiata and H. depressa. To avoid thermal shock, the specimens were gradually introduced to the five different temperature treatments. Subsequent experiments used light levels of 11 -15 µmol photos m-2 s-1.
A 30-day flow-through experiment was conducted where the effects of three temperature ranges and three nutrient levels were studied simultaneously: Temperature: 26, 29 and 31, and nutrient concentrations of 0.5, 1.0 and 1.4 µmol L-1. Specimens of A.radiata and H.depressa contained in six-well plates, and C. mayorii was contained in polypropylene tubes.
Analysis included photosynthetic efficiency, Chl a, motility and growth measurements in A. raditata. Results of these experiments suggested that physiological stress and bleaching are species specific.
This research was supported by the Australian government’s Marine and Tropical Sciences Research Facility, implemented by the Reef and Rainforest Research Centre in northern Queensland, Australia.
Simple
Identification info
- Date (Revision)
- 2024-10-17T00:00:00
Publisher
Owner
- Website
- AIMS Web Site
- Website
- AIMS Web Site
- Credit
- Uthicke, Sven, Dr. Australian Institute of Marine Science (AIMS)
- Status
- Completed
Principal investigator
Point of contact
- Temporal resolution
-
P1Y0M0DT0H0M0S
- Topic category
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- Oceans
Extent
- Description
- Edward Island
Extent
- Description
- Heron Island
Extent
- Description
- Magnetic Island
Extent
- Description
- Hardy Reef
Extent
- Description
- Deloraine Island
Extent
- Description
- Nelly Bay
Extent
- Description
- Daydream Island
Extent
- Description
- Dent Island
Extent
- Description
- Bait Reef
Extent
- Description
- Double Cone Island
Extent
- Description
- Border Island
Extent
- Description
- Collective resources start and end dates
Temporal extent
- Time position
- 2009-05-17
- Time position
- 2010-01-17
- Maintenance and update frequency
- Not planned
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- Attribution: Format for citation of metadata sourced from Australian Institute of Marine Science (AIMS) in a list of reference is as follows: "Australian Institute of Marine Science (AIMS). (2011). Bleaching in larger benthic foraminifera from the Great Barrier Reef. https://apps.aims.gov.au/metadata/view/3c734051-b88a-40aa-8c7c-7555c24161cd, accessed[date-of-access]".
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- English
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- Physical measurement
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Schmidt C, Heinz P, Kucera M and Uthicke S (2011) Temperature-induced stress leads to bleaching in larger benthic foraminifera hosting endosymbiotic diatoms. Limnology and Oceanography. 56: 1587-1602.
Schmidt C, Heinz P, Kucera M and Uthicke S (2011) Temperature-induced stress leads to bleaching in larger benthic foraminifera hosting endosymbiotic diatoms. Limnology and Oceanography. 56: 1587-1602.
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- As needed
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- 3c734051-b88a-40aa-8c7c-7555c24161cd
- Language
- English
- Character encoding
- UTF8
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- 0800 to 1640 UTC+10: Monday to Friday
Type of resource
- Resource scope
- Dataset
- Metadata linkage
-
IMOS SOOP Underway Data from AIMS Vessel RV Cape Ferguson Trip 4914 From 15 Jan 2010 To 27 Jan 2010: IMOS SOOP Underway Data from AIMS Vessel RV Cape Ferguson Trip 4914 From 15 Jan 2010 To 27 Jan 2010
IMOS SOOP Underway Data from AIMS Vessel RV Cape Ferguson Trip 4914 From 15 Jan 2010 To 27 Jan 2010: IMOS SOOP Underway Data from AIMS Vessel RV Cape Ferguson Trip 4914 From 15 Jan 2010 To 27 Jan 2010
- Metadata linkage
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IMOS SOOP Underway Data from AIMS Vessel RV Cape Ferguson Trip 4897 From 06 Aug 2009 To 12 Aug 2009: IMOS SOOP Underway Data from AIMS Vessel RV Cape Ferguson Trip 4897 From 06 Aug 2009 To 12 Aug 2009
IMOS SOOP Underway Data from AIMS Vessel RV Cape Ferguson Trip 4897 From 06 Aug 2009 To 12 Aug 2009: IMOS SOOP Underway Data from AIMS Vessel RV Cape Ferguson Trip 4897 From 06 Aug 2009 To 12 Aug 2009
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Point of truth URL of this metadata record
Point of truth URL of this metadata record
- Date info (Creation)
- 2011-07-25T00:00:00
- Date info (Revision)
- 2019-05-24T00:00:00
Metadata standard
- Title
- ISO 19115-3:2018