http://lod.bco-dmo.org/id/dataset/488773
eng; USA
utf8
dataset
Highest level of data collection, from a common set of sensors or instrumentation, usually within the same research project
Biological and Chemical Oceanography Data Management Office (BCO-DMO)
Unavailable
508-289-2009
WHOI MS#36
Woods Hole
MA
02543
USA
info@bco-dmo.org
http://www.bco-dmo.org
Monday - Friday 8:00am - 5:00pm
For questions regarding this resource, please contact BCO-DMO via the email address provided.
pointOfContact
2014-01-27
ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data
ISO 19115-2:2009(E)
Porites PSII quantum yield after exposure to Galaxaura thalli in the Viti Levu, Fiji from May 2011 (Killer Seaweeds project)
2014-01-22
publication
2014-01-22
revision
BCO-DMO Linked Data URI
2014-01-22
creation
http://lod.bco-dmo.org/id/dataset/488773
Mark E. Hay
Georgia Institute of Technology
principalInvestigator
Biological and Chemical Oceanography Data Management Office (BCO-DMO)
Unavailable
508-289-2009
WHOI MS#36
Woods Hole
MA
02543
USA
info@bco-dmo.org
http://www.bco-dmo.org
Monday - Friday 8:00am - 5:00pm
For questions regarding this resource, please contact BCO-DMO via the email address provided.
publisher
Cite this dataset as: Hay, M. E. (2014) Porites PSII quantum yield after exposure to Galaxaura thalli in the Viti Levu, Fiji from May 2011 (Killer Seaweeds project). Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 2014-01-22) Version Date 2014-01-22 [if applicable, indicate subset used]. http://lod.bco-dmo.org/id/dataset/488773 [access date]
Porites PSII quantum yield after exposure to Galaxaura thalli Dataset Description: Methods and Sampling: <p>To confirm that induction of allelochemicals by Galaxaura increases coral damage under field conditions, we conducted an 8-day Galaxaura-Porites manipulation as before, but then placed the thalli (instead of extracts) of Galaxaura that had been in contact with Porites (‘treatment’) into competition with new Porites fragments (6-8 cm branches, planted as above; n = 15) and assessed the impacts of these seaweeds on corals relative to thalli that had been in contact with Porites skeletons (‘controls’; n = 15). We evaluated the effects of treatment and control seaweeds on the photophysiology of these new corals after 2, 4 and 12 days. We also deployed Porites without seaweed contact as environmental controls (‘environmental control’; n = 15). At each sampling interval, we took a single PAM fluorometry measurement (as above) on each coral at the most damaged location experiencing seaweed contact along the mid-point of the branch (i.e. excluding extremities). Environmental controls were sampled at the most damaged location along the midpoint using identical protocol. We caged the rack to prevent grazing by large herbivores.</p>
<p>We used PAM fluorometry (Diving-PAM, Walz, Germany) to assess changes in the photosystem II (PSII) quantum yield of zooxanthellae living within Porites, following contact with seaweed thalli or extracts. PAM fluorometry is commonly used to assess PSII function within the coral holobiont in response to biotic or abiotic stressors, and to investigate the processes leading to coral bleaching. Measurements of light-adapted corals (i.e. effective quantum yield (Phi_sub.PSII)) theoretically range from 0.0 to approximately 0.83. Empirical studies suggest that measurements of approximately 0.50-0.75 are indicative of a healthy coral and measurements of approximately 0.00-0.25 are indicative of coral bleaching and mortality. Effective quantum yield (Phi_sub.PSII) values are highly correlated with visual assessments of coral bleaching for Porites and other corals at our study site. We wanted to assess coral responses in nature with minimal disturbance of the test corals, so we sampled them in the field between 09.00 and 13.00 h. We interspersed readings for treatments and controls through time to prevent confounding seaweed effects with in situ temporal changes in non-photochemical quenching (i.e. temperature and UV). Coral fragments were (i) collected from colonies adjacent to our experimental rack (i.e. the same depth and local condition), (ii) allowed to acclimate on the rack for 1-24 months prior to experiments and (iii) haphazardly interspersed among treatments and controls to homogenize initial variance in zooxanthellae density and diversity among&nbsp;replicates. We avoided self-shading while sampling.</p>
<p><strong>Relevant References:</strong></p>
<p>* Rasher DB and ME Hay. "Competition induces allelopathy but suppresses growth and anti-herbivore defense in a chemically rich seaweed". &nbsp;Proceedings of the Royal Society: B-Biological Sciences.&nbsp;vol. 281 no. 1777 20132615,&nbsp;2014&nbsp;(<a href="http://dx.doi.org/10.1098/rspb.2013.2615">http://dx.doi.org/10.1098/rspb.2013.2615</a>).</p>
<p>Rasher DB, Stout EP, Engel S, Kubanek J, and ME Hay. "Macroalgal terpenes function as allelopathic agents against reef corals", Proceedings of the National Academy of Sciences, v. 108, 2011, p. 17726.</p>
<p>Beattie AJ, ME Hay, B Magnusson, R de Nys, J Smeathers, JFV Vincent. "Ecology and bioprospecting," Austral Ecology, v.36, 2011, p. 341.</p>
<p>Rasher DB and ME Hay. "Seaweed allelopathy degrades the resilience and function of coral reefs," Communicative and Integrative Biology, v.3, 2010.</p>
<p>Hay ME, Rasher DB. "Corals in crisis," The Scientist, v.24, 2010, p. 42.</p>
<p>Hay ME and DB Rasher. "Coral reefs in crisis: reversing the biotic death spiral," Faculty 1000 Biology Reports 2010, v.2, 2010.</p>
<p>Rasher DB and ME Hay. "Chemically rich seaweeds poison corals when not controlled by herbivores", Proceedings of the National Academy of Sciences, v.107, 2010, p. 9683.</p>
Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-0929119 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=0929119
completed
Mark E. Hay
Georgia Institute of Technology
404-894-8429
School of Biology 310 Ferst Drive
Atlanta
GA
30332
mark.hay@biology.gatech.edu
pointOfContact
asNeeded
Dataset Version: 2014-01-22
Unknown
lat
lon
date
day
Galaxaura_contact
replicate
id
yield
Fluorometer
theme
None, User defined
latitude
longitude
date
day of month
No BCO-DMO term
replicate
sample identification
featureType
BCO-DMO Standard Parameters
Fluorometer
instrument
BCO-DMO Standard Instruments
Fiji_2011
service
Deployment Activity
Viti Levu, Fiji
place
Locations
otherRestrictions
otherRestrictions
Access Constraints: none. Use Constraints: Please follow guidelines at: http://www.bco-dmo.org/terms-use Distribution liability: Under no circumstances shall BCO-DMO be liable for any direct, incidental, special, consequential, indirect, or punitive damages that result from the use of, or the inability to use, the materials in this data submission. If you are dissatisfied with any materials in this data submission your sole and exclusive remedy is to discontinue use.
Killer Seaweeds: Allelopathy against Fijian Corals
https://osprey.bco-dmo.org/project/480717
Killer Seaweeds: Allelopathy against Fijian Corals
<p><em>Extracted from the NSF award abstract:</em></p>
<p>Coral reefs are in dramatic global decline, with reefs commonly converting from species-rich and topographically-complex communities dominated by corals to species- poor and topographically-simplified communities dominated by seaweeds. These phase-shifts result in fundamental loss of ecosystem function. Despite debate about whether coral-to-algal transitions are commonly a primary cause, or simply a consequence, of coral mortality, rigorous field investigation of seaweed-coral competition has received limited attention. There is limited information on how the outcome of seaweed-coral competition varies among species or the relative importance of different competitive mechanisms in facilitating seaweed dominance. In an effort to address this topic, the PI will conduct field experiments in the tropical South Pacific (Fiji) to determine the effects of seaweeds on corals when in direct contact, which seaweeds are most damaging to corals, the role allelopathic lipids that are transferred via contact in producing these effects, the identity and surface concentrations of these metabolites, and the dynamic nature of seaweed metabolite production and coral response following contact. The herbivorous fishes most responsible for controlling allelopathic seaweeds will be identified, the roles of seaweed metabolites in allelopathy vs herbivore deterrence will be studied, and the potential for better managing and conserving critical reef herbivores so as to slow or reverse conversion of coral reef to seaweed meadows will be examined.</p>
<p>Preliminary results indicate that seaweeds may commonly damage corals via lipid- soluble allelochemicals. Such chemically-mediated interactions could kill or damage adult corals and produce the suppression of coral fecundity and recruitment noted by previous investigators and could precipitate positive feedback mechanisms making reef recovery increasingly unlikely as seaweed abundance increases. Chemically-mediated seaweed-coral competition may play a critical role in the degradation of present-day coral reefs. Increasing information on which seaweeds are most aggressive to corals and which herbivores best limit these seaweeds may prove useful in better managing reefs to facilitate resilience and possible recovery despite threats of global-scale stresses. Fiji is well positioned to rapidly use findings from this project for better management of reef resources because it has already erected >260 MPAs, Fijian villagers have already bought-in to the value of MPAs, and the Fiji Locally-Managed Marine Area (FLMMA) Network is well organized to get information to villagers in a culturally sensitive and useful manner.</p>
<p>The broader impacts of this project are far reaching. The project provides training opportunities for 2-2.5 Ph.D students and 1 undergraduate student each year in the interdisciplinary areas of marine ecology, marine conservation, and marine chemical ecology. Findings from this project will be immediately integrated into classes at Ga Tech and made available throughout Fiji via a foundation and web site that have already set-up to support marine conservation efforts in Fiji and marine education efforts both within Fiji and internationally. Business and community leaders from Atlanta (via Rotary International Service efforts) have been recruited to help organize and fund community service and outreach projects in Fiji -- several of which are likely to involve marine conservation and education based in part on these efforts there. Media outlets (National Geographic, NPR, Animal Planet, Audubon Magazine, etc.) and local Rotary clubs will be used to better disseminate these discoveries to the public.</p>
<p>PUBLICATIONS PRODUCED AS A RESULT OF THIS RESEARCH</p>
<p>Rasher DB, Stout EP, Engel S, Kubanek J, and ME Hay. "Macroalgal terpenes function as allelopathic agents against reef corals", Proceedings of the National Academy of Sciences, v. 108, 2011, p. 17726.</p>
<p>Beattie AJ, ME Hay, B Magnusson, R de Nys, J Smeathers, JFV Vincent. "Ecology and bioprospecting," Austral Ecology, v.36, 2011, p. 341.</p>
<p>Rasher DB and ME Hay. "Seaweed allelopathy degrades the resilience and function of coral reefs," Communicative and Integrative Biology, v.3, 2010.</p>
<p>Hay ME, Rasher DB. "Corals in crisis," The Scientist, v.24, 2010, p. 42.</p>
<p>Hay ME and DB Rasher. "Coral reefs in crisis: reversing the biotic death spiral," Faculty 1000 Biology Reports 2010, v.2, 2010.</p>
<p>Rasher DB and ME Hay. "Chemically rich seaweeds poison corals when not controlled by herbivores", Proceedings of the National Academy of Sciences, v.107, 2010, p. 9683.</p>
Killer Seaweeds
largerWorkCitation
project
eng; USA
oceans
Viti Levu, Fiji
2014-01-22
Viti Levu, Fiji (18º13.049’S, 177º42.968’E)
0
BCO-DMO catalogue of parameters from Porites PSII quantum yield after exposure to Galaxaura thalli in the Viti Levu, Fiji from May 2011 (Killer Seaweeds project)
Biological and Chemical Oceanography Data Management Office (BCO-DMO)
Unavailable
508-289-2009
WHOI MS#36
Woods Hole
MA
02543
USA
info@bco-dmo.org
http://www.bco-dmo.org
Monday - Friday 8:00am - 5:00pm
For questions regarding this resource, please contact BCO-DMO via the email address provided.
pointOfContact
http://lod.bco-dmo.org/id/dataset-parameter/488782.rdf
Name: lat
Units: decimal degrees
Description: <p>latitude; north is positive</p>
http://lod.bco-dmo.org/id/dataset-parameter/488783.rdf
Name: lon
Units: decimal degrees
Description: <p>longitude; east is positive</p>
http://lod.bco-dmo.org/id/dataset-parameter/488784.rdf
Name: date
Units: mm/dd/yyyy
Description: <p>sampling date</p>
http://lod.bco-dmo.org/id/dataset-parameter/488785.rdf
Name: day
Units: days
Description: <p>days of seaweed contact</p>
http://lod.bco-dmo.org/id/dataset-parameter/488786.rdf
Name: Galaxaura_contact
Units: unitless
Description: <p>treatment thalli = previous contact with coral; control thalli = previous contact with skeleton; environmental control = no seaweed contact. See Rasher & Hay (2014) for full description</p>
http://lod.bco-dmo.org/id/dataset-parameter/488787.rdf
Name: replicate
Units: unitless
Description: <p>replicate identification number</p>
http://lod.bco-dmo.org/id/dataset-parameter/488788.rdf
Name: id
Units: unitless
Description: <p>tag identification number</p>
http://lod.bco-dmo.org/id/dataset-parameter/488789.rdf
Name: yield
Units: unitless
Description: <p>photosystem II quantum yield of zooxanthellae living within Porites</p>
GB/NERC/BODC > British Oceanographic Data Centre, Natural Environment Research Council, United Kingdom
Biological and Chemical Oceanography Data Management Office (BCO-DMO)
Unavailable
508-289-2009
WHOI MS#36
Woods Hole
MA
02543
USA
info@bco-dmo.org
http://www.bco-dmo.org
Monday - Friday 8:00am - 5:00pm
For questions regarding this resource, please contact BCO-DMO via the email address provided.
pointOfContact
8016
https://datadocs.bco-dmo.org/file/GwwAkBZT1yB7Yg/Glax_thalli.csv
Glax_thalli.csv
Primary data file for dataset ID 488773
download
https://osprey.bco-dmo.org/dataset/488773/data/download
download
onLine
dataset
<p>To confirm that induction of allelochemicals by Galaxaura increases coral damage under field conditions, we conducted an 8-day Galaxaura-Porites manipulation as before, but then placed the thalli (instead of extracts) of Galaxaura that had been in contact with Porites (‘treatment’) into competition with new Porites fragments (6-8 cm branches, planted as above; n = 15) and assessed the impacts of these seaweeds on corals relative to thalli that had been in contact with Porites skeletons (‘controls’; n = 15). We evaluated the effects of treatment and control seaweeds on the photophysiology of these new corals after 2, 4 and 12 days. We also deployed Porites without seaweed contact as environmental controls (‘environmental control’; n = 15). At each sampling interval, we took a single PAM fluorometry measurement (as above) on each coral at the most damaged location experiencing seaweed contact along the mid-point of the branch (i.e. excluding extremities). Environmental controls were sampled at the most damaged location along the midpoint using identical protocol. We caged the rack to prevent grazing by large herbivores.</p>
<p>We used PAM fluorometry (Diving-PAM, Walz, Germany) to assess changes in the photosystem II (PSII) quantum yield of zooxanthellae living within Porites, following contact with seaweed thalli or extracts. PAM fluorometry is commonly used to assess PSII function within the coral holobiont in response to biotic or abiotic stressors, and to investigate the processes leading to coral bleaching. Measurements of light-adapted corals (i.e. effective quantum yield (Phi_sub.PSII)) theoretically range from 0.0 to approximately 0.83. Empirical studies suggest that measurements of approximately 0.50-0.75 are indicative of a healthy coral and measurements of approximately 0.00-0.25 are indicative of coral bleaching and mortality. Effective quantum yield (Phi_sub.PSII) values are highly correlated with visual assessments of coral bleaching for Porites and other corals at our study site. We wanted to assess coral responses in nature with minimal disturbance of the test corals, so we sampled them in the field between 09.00 and 13.00 h. We interspersed readings for treatments and controls through time to prevent confounding seaweed effects with in situ temporal changes in non-photochemical quenching (i.e. temperature and UV). Coral fragments were (i) collected from colonies adjacent to our experimental rack (i.e. the same depth and local condition), (ii) allowed to acclimate on the rack for 1-24 months prior to experiments and (iii) haphazardly interspersed among treatments and controls to homogenize initial variance in zooxanthellae density and diversity among&nbsp;replicates. We avoided self-shading while sampling.</p>
<p><strong>Relevant References:</strong></p>
<p>* Rasher DB and ME Hay. "Competition induces allelopathy but suppresses growth and anti-herbivore defense in a chemically rich seaweed". &nbsp;Proceedings of the Royal Society: B-Biological Sciences.&nbsp;vol. 281 no. 1777 20132615,&nbsp;2014&nbsp;(<a href="http://dx.doi.org/10.1098/rspb.2013.2615">http://dx.doi.org/10.1098/rspb.2013.2615</a>).</p>
<p>Rasher DB, Stout EP, Engel S, Kubanek J, and ME Hay. "Macroalgal terpenes function as allelopathic agents against reef corals", Proceedings of the National Academy of Sciences, v. 108, 2011, p. 17726.</p>
<p>Beattie AJ, ME Hay, B Magnusson, R de Nys, J Smeathers, JFV Vincent. "Ecology and bioprospecting," Austral Ecology, v.36, 2011, p. 341.</p>
<p>Rasher DB and ME Hay. "Seaweed allelopathy degrades the resilience and function of coral reefs," Communicative and Integrative Biology, v.3, 2010.</p>
<p>Hay ME, Rasher DB. "Corals in crisis," The Scientist, v.24, 2010, p. 42.</p>
<p>Hay ME and DB Rasher. "Coral reefs in crisis: reversing the biotic death spiral," Faculty 1000 Biology Reports 2010, v.2, 2010.</p>
<p>Rasher DB and ME Hay. "Chemically rich seaweeds poison corals when not controlled by herbivores", Proceedings of the National Academy of Sciences, v.107, 2010, p. 9683.</p>
Specified by the Principal Investigator(s)
asNeeded
7.x-1.1
Biological and Chemical Oceanography Data Management Office (BCO-DMO)
Unavailable
508-289-2009
WHOI MS#36
Woods Hole
MA
02543
USA
info@bco-dmo.org
http://www.bco-dmo.org
Monday - Friday 8:00am - 5:00pm
For questions regarding this resource, please contact BCO-DMO via the email address provided.
pointOfContact
Fluorometer
Fluorometer
PI Supplied Instrument Name: Fluorometer PI Supplied Instrument Description:Diving-PAM underwater fluorometer, Walz, Germany Instrument Name: Fluorometer Instrument Short Name:Fluorometer Instrument Description: A fluorometer or fluorimeter is a device used to measure parameters of fluorescence: its intensity and wavelength distribution of emission spectrum after excitation by a certain spectrum of light. The instrument is designed to measure the amount of stimulated electromagnetic radiation produced by pulses of electromagnetic radiation emitted into a water sample or in situ. Community Standard Description: http://vocab.nerc.ac.uk/collection/L05/current/113/
Deployment: Fiji_2011
Fiji_2011
Hay_GaTech
shoreside
Fiji_2011
Mark E. Hay
Georgia Institute of Technology
Hay_GaTech
shoreside