http://lod.bco-dmo.org/id/dataset/751176
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
2018-12-18
ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data
ISO 19115-2:2009(E)
Octocoral species abundance during transect surveys at four sites on the south shore of St. John, US Virgin Islands from November to December 2017
2019-11-04
publication
2019-11-04
revision
Marine Biological Laboratory/Woods Hole Oceanographic Institution Library (MBLWHOI DLA)
2019-11-04
publication
https://doi.org/10.1575/1912/bco-dmo.751176.1
Howard Lasker
State University of New York at Buffalo
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: Lasker, H. (2019) Octocoral species abundance during transect surveys at four sites on the south shore of St. John, US Virgin Islands from November to December 2017. Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 1) Version Date 2019-11-04 [if applicable, indicate subset used]. doi:10.1575/1912/bco-dmo.751176.1 [access date]
Transect surveys of octocoral species abundance Dataset Description: <p>This dataset contains octocoral colony heights measured during transect surveys at four sites on the south shore of St. John, US Virgin Islands in November 2017 following Hurricanes Irma and Maria.</p> Methods and Sampling: <p>Survey design:<br />
All sites were located at 6 to 9 meters depth.&nbsp;<br />
<br />
Censuses at East Cabritte, Europa and Tektite were based on 50x10m areas that were arbitrarily selected and permanently marked with stainless steel eyebolts at the corners of the sites.&nbsp; A total of six transect lines, also marked with eyebolts, were laid out at 10 m intervals. All octocorals present in 1 x 1 m quadrats along the 10-meter long transects were scored. In 2014 ten quadrats were surveyed along each line.&nbsp; In 2015 and 2016 ten quadrats were scored along each transect line at Europa and Tektite and five randomly chosen quadrats were surveyed at East Cabritte.&nbsp; The transect identifier "transect_pos" has values 0, 10, 20, 30, 40 or 50 which represent position in meters within the 50x10 survey area corresponding to each of the 6 transects (e.g. 20 = 20m).&nbsp;&nbsp;<br />
<br />
The census at Booby Rock was conducted in a single day in which 2 transects were randomly placed along a 50 m line that was arbitrarily placed on a constant depth contour.&nbsp; Only 4 1x1 m quadrats were surveyed along each transect. The transect identifier (transect_pos) for transects at Booby Rock refers to position along the 50 m line.<br />
<br />
Sampling methods:<br />
Identifications were based on traits visible in the field, and samples of representative colonies were collected for further analysis in cases in which field identification was uncertain.&nbsp; Sclerites from those samples were examined for species identification.<br />
<br />
Colony heights were measured as the maximum distance from the base of the octocoral colony until the farthest tips of the branch (i.e. not necessarily perpendicular to the substrate).&nbsp; All measures rounded to the nearest cm with the exception of 5 cm which only includes colonies &gt;= 5 cm.&nbsp; Starting in 2016, measures less than 5 cm reflect colonies with thick branches which could only have &lt;5 cm heights due to partial mortality.<br />
<br />
Two height measures are present, height of living tissue, which only includes that part of the axis with living tissue and total height which is the distance from the base to the tip of the tallest branch regardless of whether the tips or base had living tissue.&nbsp; (Only colonies with some living tissue were measured).<br />
<br />
Species names for field_codes in this dataset&nbsp;can be found in the related dataset: https://www.bco-dmo.org/dataset/733063</p>
<p>These data are a continuation of BCO-DMO project "Ecology and functional biology of octocoral communities" (http://www.bco-dmo.org/project/562086)</p>
Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-1801475 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=1801475
completed
Howard Lasker
State University of New York at Buffalo
716-645-4870
Department of Geology 126 Cooke Hall
Buffalo
NY
14260-1350
USA
hlasker@buffalo.edu
pointOfContact
asNeeded
Dataset Version: 1
Unknown
Census_Year
Date
Site
Transect_Position
Side_of_transect
Meter_on_transect
Species_code
Height_of_living_tissue
Total_Height
Genus_Species
Genus
Species
lat
lon
Comments_1
Comments_2
theme
None, User defined
year
date
site
transect
site description
species scientific name (binomial)
height
genus
latitude
longitude
No BCO-DMO term
featureType
BCO-DMO Standard Parameters
WS17317
service
Deployment Activity
St. John, US Virgin Islands
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.
RAPID: Resilience of Caribbean octocorals following Hurricanes Irma and Maria
https://osprey.bco-dmo.org/project/749653
RAPID: Resilience of Caribbean octocorals following Hurricanes Irma and Maria
<p>NSF Award Abstract:<br />
Disturbance and subsequent recovery have been key factors in the dynamics of coral reef populations, but in the Caribbean, there has been a steady decline in the abundance of hard corals accompanied by increased abundance of algae. This characterization overlooks the observation that at some sites for which there are quantitative data, the abundances of octocorals (sea fans and sea plumes) have increased. Closer inspection of those data reveals that octocorals have also declined at times, but unlike hard corals, they recovered and are now more abundant in at least some locations than 30 years ago. The change in abundances of these organisms would appear to due to the greater resilience of octocorals. The damage inflicted by Hurricanes Irma and Maria on the south shore of St. John, U.S. Virgin Is. provides a window into these processes. Abundances of hard corals on these reefs have been monitored for the past 30 years and the octocorals have been followed for the past 4 years. Colonization of the newly opened space on the reef will be studied to determine if further shifts in abundances can be expected and to understand the basis for the greater resilience of octocoral populations. Characterizing the resilience of octocorals relative to hard corals will have implications for the fate of Caribbean reefs in a world subject of increasing levels of stress. This will be of importance to policy makers and managers, because hard corals and octocorals provide substantially different ecosystem services. In addition to its impact on our fundamental understanding of reef processes, the grant will support the training of graduate students.</p>
<p>Coral reefs have been recognized to be disturbance driven systems for over 50 years and disturbance has been considered to be important in maintaining diversity of reef communities. However, the past 30 years has been characterized by declines in the abundances of scleractinians, often associated with acute events such as hurricanes and bleaching events. A knowledge of the effects of disturbance and subsequent recovery that occurs during these events is critical to understanding the changes in reef structure that have occurred in the last 30 years. At sites for which there are data, changes in the relative abundance of scleractinians and octocorals appear to coincide with disturbance followed by octocoral recovery and a lack of scleractinian recovery. This change must reflect changes in larval supply, settlement, and/or survival, and those differences should be greatest following disturbance. The effects of Hurricanes Irma and Maria on the south shore of St. John provide the opportunity to characterize recruitment following disturbance and identify the processes that may limit successful recruitment on contemporary reefs. Data are already available on the abundance of octocoral and scleractinian species over the past 4 years, and annual censuses have provided data on octocoral recruitment and survival and species level characterizations of octocoral abundances. Recruitment and survival are also being related to spatial complexity of the habitat at the scale of mm and cm and the effects on hurricane driven changes in that spatial complexity will also be assessed. The frequency and intensity of disturbances will at the least continue at historical or greater levels. The comparison of data from before and now after disturbance will provide a powerful assessment of the resilience of octocorals and scleractinians and the role of recruitment and recruit survival in their relative resilience. Thus the effects of Hurricanes Irma and Maria provide a window on the nature of future reefs.</p>
<p>Note: This project is closely associated with the project "Ecology and functional biology of octocoral communities". See: <a href="https://www.bco-dmo.org/project/562086">https://www.bco-dmo.org/project/562086</a>.</p>
Octocorals and Hurricanes
largerWorkCitation
project
eng; USA
biota
oceans
St. John, US Virgin Islands
-64.72993333
-64.71043333
18.30293333
18.31671667
2017-11-21
2017-12-01
St John, US Virgin Islands
0
BCO-DMO catalogue of parameters from Octocoral species abundance during transect surveys at four sites on the south shore of St. John, US Virgin Islands from November to December 2017
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/751177.rdf
Name: Census_Year
Units: unitless
Description: <p>Census Year</p>
http://lod.bco-dmo.org/id/dataset-parameter/751178.rdf
Name: Date
Units: unitless
Description: <p>Day - Month - Year on which data were collected.</p>
http://lod.bco-dmo.org/id/dataset-parameter/751179.rdf
Name: Site
Units: unitless
Description: <p>Census locations</p>
http://lod.bco-dmo.org/id/dataset-parameter/751180.rdf
Name: Transect_Position
Units: meters (m)
Description: <p>Transects positioned in a marked 50x10m area with stainless steel eye bolts marking each corner and each of the 6 transect. Transects were 10m long across the 50x10m area. So there were 0m; 10m; 20m; 30m; 40m; 50m.</p>
http://lod.bco-dmo.org/id/dataset-parameter/751181.rdf
Name: Side_of_transect
Units: unitless
Description: <p>Side of the transect tape (Left or Right) orientation looking towards open ocean with the nearest shore to the back.</p>
http://lod.bco-dmo.org/id/dataset-parameter/751182.rdf
Name: Meter_on_transect
Units: meters (m)
Description: <p>From 0m to 9m. 1x1m quadrats were positioned randomly along the 10 m transect. The values refer to the position of the "shoreward" corner of the quadrat. Thus "0"refers to the quadrat placed between the 0 and 1 meter marks</p>
http://lod.bco-dmo.org/id/dataset-parameter/751183.rdf
Name: Species_code
Units: unitless
Description: <p>Octocorals species acronyms. Field identifications of Pseudoplexaura flagellosa and P. wagenaari are difficult among small colonies and for analysis purposes the two species should be lumped as a single group. Field identifications of Eunicea mammosa E. laxispica and E. succinea are sometimes difficult s and for analysis purposes the two species should be lumped as a single group. LINES WITH NO SPECIES ENTRY IDENTIFY QUADRATS IN WHICH NO OCTOCORALS WERE PRESENT- This is also noted in the comments as "No colonies present"</p>
http://lod.bco-dmo.org/id/dataset-parameter/751184.rdf
Name: Height_of_living_tissue
Units: centimeters (cm)
Description: <p>Maximum distance from the base of the octocoral colony until the farthest tips of the longest branch with living tissue (i.e. not necessarily perpendicular to the substrate). All measures rounded to the nearest cm with the exception of 5 cm which only includes colonies >= 5 cm. Measures less than 5 cm reflect colonies with thick branches which could only have <5 cm heights due to partial mortality.</p>
http://lod.bco-dmo.org/id/dataset-parameter/751185.rdf
Name: Total_Height
Units: centimeters (cm)
Description: <p>total height</p>
http://lod.bco-dmo.org/id/dataset-parameter/751186.rdf
Name: Genus_Species
Units: unitless
Description: <p>Full species name</p>
http://lod.bco-dmo.org/id/dataset-parameter/751187.rdf
Name: Genus
Units: unitless
Description: <p>Genus name</p>
http://lod.bco-dmo.org/id/dataset-parameter/751188.rdf
Name: Species
Units: unitless
Description: <p>Species name</p>
http://lod.bco-dmo.org/id/dataset-parameter/751189.rdf
Name: lat
Units: decimal degrees
Description: <p>latitude in degrees north</p>
http://lod.bco-dmo.org/id/dataset-parameter/751190.rdf
Name: lon
Units: decimal degrees
Description: <p>longitude in degrees east</p>
http://lod.bco-dmo.org/id/dataset-parameter/751191.rdf
Name: Comments_1
Units: unitless
Description: <p>Comments. C. gibbosum denotes the presence of Cyphoma giibbosum a grazing snail that strips living tissue from octocoral colonies.</p>
http://lod.bco-dmo.org/id/dataset-parameter/751192.rdf
Name: Comments_2
Units: unitless
Description: <p>Numbers refer to sample numbers of 4 cm dried tissue specimens collected for species identification.</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
105085
https://darchive.mblwhoilibrary.org/bitstream/1912/24769/1/dataset-751176_octocoral__v1.tsv
download
https://doi.org/10.1575/1912/bco-dmo.751176.1
download
onLine
dataset
<p>Survey design:<br />
All sites were located at 6 to 9 meters depth.&nbsp;<br />
<br />
Censuses at East Cabritte, Europa and Tektite were based on 50x10m areas that were arbitrarily selected and permanently marked with stainless steel eyebolts at the corners of the sites.&nbsp; A total of six transect lines, also marked with eyebolts, were laid out at 10 m intervals. All octocorals present in 1 x 1 m quadrats along the 10-meter long transects were scored. In 2014 ten quadrats were surveyed along each line.&nbsp; In 2015 and 2016 ten quadrats were scored along each transect line at Europa and Tektite and five randomly chosen quadrats were surveyed at East Cabritte.&nbsp; The transect identifier "transect_pos" has values 0, 10, 20, 30, 40 or 50 which represent position in meters within the 50x10 survey area corresponding to each of the 6 transects (e.g. 20 = 20m).&nbsp;&nbsp;<br />
<br />
The census at Booby Rock was conducted in a single day in which 2 transects were randomly placed along a 50 m line that was arbitrarily placed on a constant depth contour.&nbsp; Only 4 1x1 m quadrats were surveyed along each transect. The transect identifier (transect_pos) for transects at Booby Rock refers to position along the 50 m line.<br />
<br />
Sampling methods:<br />
Identifications were based on traits visible in the field, and samples of representative colonies were collected for further analysis in cases in which field identification was uncertain.&nbsp; Sclerites from those samples were examined for species identification.<br />
<br />
Colony heights were measured as the maximum distance from the base of the octocoral colony until the farthest tips of the branch (i.e. not necessarily perpendicular to the substrate).&nbsp; All measures rounded to the nearest cm with the exception of 5 cm which only includes colonies &gt;= 5 cm.&nbsp; Starting in 2016, measures less than 5 cm reflect colonies with thick branches which could only have &lt;5 cm heights due to partial mortality.<br />
<br />
Two height measures are present, height of living tissue, which only includes that part of the axis with living tissue and total height which is the distance from the base to the tip of the tallest branch regardless of whether the tips or base had living tissue.&nbsp; (Only colonies with some living tissue were measured).<br />
<br />
Species names for field_codes in this dataset&nbsp;can be found in the related dataset: https://www.bco-dmo.org/dataset/733063</p>
<p>These data are a continuation of BCO-DMO project "Ecology and functional biology of octocoral communities" (http://www.bco-dmo.org/project/562086)</p>
Specified by the Principal Investigator(s)
<p>BCO-DMO Processing Notes:</p>
<ul>
<li>added conventional header with dataset name, PI name, version date</li>
<li>modified parameter names to conform with BCO-DMO naming conventions</li>
<li>added lat, lon,&nbsp;Genus_Species, Genus, and Species fields</li>
<li>converted latitude and longitude to decimal degrees</li>
<li>re-formatted date from d-Mon-yy to yyyymmdd</li>
</ul>
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
Cruise: WS17317
WS17317
R/V F.G. Walton Smith
Community Standard Description
International Council for the Exploration of the Sea
R/V F.G. Walton Smith
vessel
WS17317
Howard Lasker
State University of New York at Buffalo
R/V F.G. Walton Smith
Community Standard Description
International Council for the Exploration of the Sea
R/V F.G. Walton Smith
vessel