http://lod.bco-dmo.org/id/dataset/687940
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
2017-04-20
ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data
ISO 19115-2:2009(E)
Ecological survey data from benthic photo-quadrat surveys done on Dongsha Atoll pre- and post- bleaching event in 2015
2017-04-19
publication
2017-04-19
revision
Marine Biological Laboratory/Woods Hole Oceanographic Institution Library (MBLWHOI DLA)
2019-08-02
publication
https://doi.org/10.1575/1912/bco-dmo.687940.1
Anne L. Cohen
Woods Hole Oceanographic Institution
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: Cohen, A. (2017) Ecological survey data from benthic photo-quadrat surveys done on Dongsha Atoll pre- and post- bleaching event in 2015. Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 1) Version Date 2017-04-19 [if applicable, indicate subset used]. doi:10.1575/1912/bco-dmo.687940.1 [access date]
Benthic photo-quadrat surveys on Dongsha Atoll Dataset Description: <p>Benthic photo-quadrat&nbsp;surveys on Dongsha Atoll.</p>
<p><strong>Related publications:</strong><br />
DeCarlo T.M., Cohen A.L., Wong G.T.F., Davis K.A., Lohmann P., &amp; K. Soong (2017). Mass coral mortality under local amplification of 2 °C ocean warming. Scientific Reports 7, 44586. doi:<a href="http://dx.doi.org/10.1038/srep44586" target="_blank">10.1038/srep44586</a></p> Methods and Sampling: <p>Ecological surveys were conducted at seven stations across the reef flat and two stations on the fore reef following a protocol similar to previously established methods for characterizing benthic cover on coral reefs. Pre-bleaching surveys were conducted between 29 May and 7 June, and post-bleaching surveys were conducted between 27 July and 2 August. At each station, 5 × 50 m transects were laid out and photographed every meter (0.5 m by 0.5 m image area), giving a total of 250 photographs per station. Transects were oriented N-S (along-shore) and spaced 5 m apart (cross-shore).
</p>
Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-1605365 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=1605365
completed
Anne L. Cohen
Woods Hole Oceanographic Institution
508-289-2958
Geology & Geophysics 266 Woods Hole Rd MS #23
Woods Hole
MA
02543
USA
acohen@whoi.edu
pointOfContact
asNeeded
Dataset Version: 1
Unknown
site
lat
lon
status
species_or_substrate_type
survey_date
count
theme
None, User defined
site
latitude
longitude
sample description
count
featureType
BCO-DMO Standard Parameters
Camera
instrument
BCO-DMO Standard Instruments
Cohen_2013-15
service
Deployment Activity
Dongsha Atoll
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.
Can Coral Reefs in the Central Pacific Survive Ocean Warming? A 2015 El Nino Test
https://osprey.bco-dmo.org/project/687813
Can Coral Reefs in the Central Pacific Survive Ocean Warming? A 2015 El Nino Test
<p>This project supports a 7 day expedition to the heart of the central tropical Pacific during a particularly strong El Niño event, arguably one of the strongest on record. The target is Jarvis Island, located in the path of the cool, nutrient-rich Equatorial Under-Current (EUC). As a consequence of its location, Jarvis, a pristine, uninhabited coral reef ecosystem, is characterized by enhanced productivity, high densities of large predatory fish, turtles, corals and other sea life. However, sea surface temperatures on Jarvis are currently 3.9 degrees Celsius higher than normal for this time of year, due to El Niño. This provides investigators with a unique opportunity to examine how a highly productive reef ecosystem responds to ocean warming, and the mechanisms and timescales for recovery. Information will be collected by deploying state-of-the-art instrumentation on the reef, and sampling seawater, particulates, plankton and corals from surface to 150 meters depth. This will be the first expedition to Jarvis Island during a bleaching event. The US Pacific Remote Island Marine National Monument (PRIMNM) was recently expanded as part of a multi-national commitment to protect and preserve vast areas of our ocean and ocean resources for future generations. However, these protections do not shield ocean ecosystems from the impacts of 21st century climate change. The project investigates the potential for simultaneous changes in equatorial ocean circulation to lessen the impacts of the global warming for equatorial reefs. It tests hypotheses that improve understanding of fundamental mechanisms of coral reef resilience to climate change, and the ability to identify such reef systems for inclusion in Protected Area Networks. The cruise supports the training of four PhD students, three of whom are National Science Foundation / National Defense Science and Engineering graduate research fellows, and provide material in support of six PhD theses. Results will be shared at international meetings and workshops, and published in peer-reviewed journals. All data collected and generated from the cruise will be made publicly available via the Biological and Chemical Oceanography Data Management Office.</p>
<p>Global climate models project enhanced warming of the central tropical Pacific over this century. By implication, waters bathing five out of the seven coral reef ecosystems protected within the recently expanded PRIMNM, will warm by more than 3 degrees Celsius. This rate of warming far exceeds the known thermal tolerances of reef-building corals, fueling concerns that these reefs may not survive 21st century climate change. However the same models project a concurrent strengthening of the EUC, a projection supported by observations. The EUC carries cool, nutrient-rich waters that upwell on the west sides of the equatorial islands, cooling the reefs and enhancing productivity locally. If the GCM projections are realized, a strengthening EUC could modulate the impact of ocean warming for these reefs by reducing the rate of warming and supporting energetically replete coral communities that survive bleaching. This proposal exploits the current El Niño state of the tropical Pacific to test the following hypotheses: (1) Coral communities bathed in the nutrient-rich, productive waters of the central equatorial Pacific bleach during every El Niño, but mortality is low and as a result, percent live cover remains high. (2) Localized EUC-enhanced productivity supports nutritionally replete coral communities, which metabolize existing lipid reserves to support energetic requirements during bleaching. (3) In addition, equatorial corals adopt a flexible feeding strategy, switching from direct nitrate uptake during nitrogen-rich (greater than 5 micromolar nitrate) La Niña conditions to heterotrophic feeding during nitrogen-"poor" (less than 3 micromolar nitrate) El Niño conditions. We propose that, fueled by exogenous sources, equatorial Pacific coral communities survive bleaching with limited mortality, coral cover remains high and coral growth rates quickly recover. If data generated under this project support our hypotheses, then the combination of oceanographic and political protections could maximize the potential for coral reef survival through the 21st century.</p>
Coral Reef Resilience
largerWorkCitation
project
eng; USA
biota
oceans
Dongsha Atoll
116.9024
116.92284
20.699
20.6999
2015-05-29
2015-08-02
Central Tropical Pacific
0
BCO-DMO catalogue of parameters from Ecological survey data from benthic photo-quadrat surveys done on Dongsha Atoll pre- and post- bleaching event in 2015
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/688001.rdf
Name: site
Units: unitless
Description: <p>Name of study site</p>
http://lod.bco-dmo.org/id/dataset-parameter/688002.rdf
Name: lat
Units: decimal degrees
Description: <p>Latitude of study site</p>
http://lod.bco-dmo.org/id/dataset-parameter/688003.rdf
Name: lon
Units: decimal degrees
Description: <p>Longitude of study site</p>
http://lod.bco-dmo.org/id/dataset-parameter/688004.rdf
Name: status
Units: unitless
Description: <p>Coral status: live / bleached / recently dead</p>
http://lod.bco-dmo.org/id/dataset-parameter/688005.rdf
Name: species_or_substrate_type
Units: unitless
Description: <p>Species name or substrate type</p>
http://lod.bco-dmo.org/id/dataset-parameter/688006.rdf
Name: survey_date
Units: unitless
Description: <p>When the survey was conducted: either early June 2015 or late July 2015</p>
http://lod.bco-dmo.org/id/dataset-parameter/688007.rdf
Name: count
Units: unitless (counts)
Description: <p>Benthic substrate point counts</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
70784
https://darchive.mblwhoilibrary.org/bitstream/1912/24416/1/dataset-687940_dongsha-atoll-ecological-survey-data__v1.tsv
download
https://doi.org/10.1575/1912/bco-dmo.687940.1
download
onLine
dataset
<p>Ecological surveys were conducted at seven stations across the reef flat and two stations on the fore reef following a protocol similar to previously established methods for characterizing benthic cover on coral reefs. Pre-bleaching surveys were conducted between 29 May and 7 June, and post-bleaching surveys were conducted between 27 July and 2 August. At each station, 5 × 50 m transects were laid out and photographed every meter (0.5 m by 0.5 m image area), giving a total of 250 photographs per station. Transects were oriented N-S (along-shore) and spaced 5 m apart (cross-shore).
</p>
Specified by the Principal Investigator(s)
<p>Images were analyzed using the program Coral Point Count with 5 randomly placed points per image identified to coral genera or benthic substrate type. The same survey methodology was repeated at the same locations pre- and post-bleaching for reef flat stations (E2-E5), while fore reef station E1 was surveyed only post-bleaching. The channel north of Dongsha Island was inspected visually for bleaching on 24 June and 29 July, but no photo surveys were conducted. In total, we made 22,500 point identifications in our study. All corals, whether alive and pigmented, bleached, or recently dead were identified to genera level. Bleached corals were identified based on lack of pigment and the presence of live polyps, whereas recently dead corals were distinguished based on structurally intact corallites without any live polyps present.</p>
<p><strong>BCO-DMO Processing:</strong><br />
- transposed data so sample data are in columns;<br />
- replaced spaces with underscores and removed parentheses from site identifiers.</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
PI Supplied Instrument Name: PI Supplied Instrument Description:At each station, 5 × 50 m transects were laid out and photographed every meter. Instrument Name: Camera Instrument Short Name:camera Instrument Description: All types of photographic equipment including stills, video, film and digital systems. Community Standard Description: http://vocab.nerc.ac.uk/collection/L05/current/311/
Deployment: Cohen_2013-15
Cohen_2013-15
Dongsha_Atoll
shoreside
Cohen_2013-15
Anne L. Cohen
Woods Hole Oceanographic Institution
Dongsha_Atoll
shoreside