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Title Sum-
Institution Dataset ID
   set  data   graph     files  public Octocoral colony heights measured during transect surveys at four sites on the south shore of
St. John, US Virgin Islands in June-August 2018.
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The Dataset's Variables and Attributes

Row Type Variable Name Attribute Name Data Type Value
attribute NC_GLOBAL access_formats String .htmlTable,.csv,.json,.mat,.nc,.tsv,.esriCsv,.geoJson
attribute NC_GLOBAL acquisition_description String Survey design:

All sites were located at 6 to 9 meters depth.

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. 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. 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. 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).

The census at Booby Rock was conducted in a single day in which transects were
randomly placed along a 50 m line that was arbitrarily placed on a constant
depth contour. 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.

Yawzi and Deep Tektite surveys: 20 quadrats at each transect (3 transects)

Sampling methods:

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. Sclerites from those samples were examined
for species identification.

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 farthest branch from the base (i.e.
not necessarily perpendicular to the substrate), regardless of whether the
tips or base had living tissue. (Only colonies with some living tissue were
measured). All measures rounded to the nearest cm with the exception of 5 cm
which only includes colonies >= 5 cm. Starting in 2016, measures less than 5
cm reflect colonies with thick branches which could only have <5 cm heights
due to partial mortality.
attribute NC_GLOBAL awards_0_award_nid String 752512
attribute NC_GLOBAL awards_0_award_number String OCE-1756381
attribute NC_GLOBAL awards_0_data_url String http://www.nsf.gov/awardsearch/showAward.do?AwardNumber=1756381 (external link)
attribute NC_GLOBAL awards_0_funder_name String NSF Division of Ocean Sciences
attribute NC_GLOBAL awards_0_funding_acronym String NSF OCE
attribute NC_GLOBAL awards_0_funding_source_nid String 355
attribute NC_GLOBAL awards_0_program_manager String David L. Garrison
attribute NC_GLOBAL awards_0_program_manager_nid String 50534
attribute NC_GLOBAL cdm_data_type String Other
attribute NC_GLOBAL comment String Octocoral species surveys: adults
Octocoral colony heights measured during transect surveys at four sites on the south shore of St. John, US Virgin Islands in June-August 2018.
H. Lasker (U. Buffalo)
version: 2019-09-23
attribute NC_GLOBAL Conventions String COARDS, CF-1.6, ACDD-1.3
attribute NC_GLOBAL creator_email String info at bco-dmo.org
attribute NC_GLOBAL creator_name String BCO-DMO
attribute NC_GLOBAL creator_type String institution
attribute NC_GLOBAL creator_url String https://www.bco-dmo.org/ (external link)
attribute NC_GLOBAL data_source String extract_data_as_tsv version 2.3 19 Dec 2019
attribute NC_GLOBAL date_created String 2019-04-18T20:40:43Z
attribute NC_GLOBAL date_modified String 2020-02-12T17:29:31Z
attribute NC_GLOBAL defaultDataQuery String &amp;time&lt;now
attribute NC_GLOBAL doi String 10.1575/1912/bco-dmo.765328.1
attribute NC_GLOBAL Easternmost_Easting double -64.7104
attribute NC_GLOBAL geospatial_lat_max double 18.3167
attribute NC_GLOBAL geospatial_lat_min double 18.3029
attribute NC_GLOBAL geospatial_lat_units String degrees_north
attribute NC_GLOBAL geospatial_lon_max double -64.7104
attribute NC_GLOBAL geospatial_lon_min double -64.7299
attribute NC_GLOBAL geospatial_lon_units String degrees_east
attribute NC_GLOBAL infoUrl String https://www.bco-dmo.org/dataset/765328 (external link)
attribute NC_GLOBAL institution String BCO-DMO
attribute NC_GLOBAL keywords String basal, Basal_damage, bco, bco-dmo, biological, census, Census_Year, chemical, code, comments, Comments_1, Comments_2_sample_tag, damage, data, dataset, date, dmo, erddap, genus, Genus_Species, height, Height_of_living_tissue_cm, latitude, living, longitude, management, meter, Meter_on_transect, oceanography, office, position, preliminary, sample, side, Side_of_transect, site, species, Species_code, tag, time, tissue, total, Total_height, transect, Transect_Position, year
attribute NC_GLOBAL license String https://www.bco-dmo.org/dataset/765328/license (external link)
attribute NC_GLOBAL metadata_source String https://www.bco-dmo.org/api/dataset/765328 (external link)
attribute NC_GLOBAL Northernmost_Northing double 18.3167
attribute NC_GLOBAL param_mapping String {'765328': {'lat': 'master - latitude', 'lon': 'master - longitude'}}
attribute NC_GLOBAL parameter_source String https://www.bco-dmo.org/mapserver/dataset/765328/parameters (external link)
attribute NC_GLOBAL people_0_affiliation String State University of New York at Buffalo
attribute NC_GLOBAL people_0_affiliation_acronym String SUNY Buffalo
attribute NC_GLOBAL people_0_person_name String Howard Lasker
attribute NC_GLOBAL people_0_person_nid String 562092
attribute NC_GLOBAL people_0_role String Principal Investigator
attribute NC_GLOBAL people_0_role_type String originator
attribute NC_GLOBAL people_1_affiliation String Woods Hole Oceanographic Institution
attribute NC_GLOBAL people_1_affiliation_acronym String WHOI BCO-DMO
attribute NC_GLOBAL people_1_person_name String Nancy Copley
attribute NC_GLOBAL people_1_person_nid String 50396
attribute NC_GLOBAL people_1_role String BCO-DMO Data Manager
attribute NC_GLOBAL people_1_role_type String related
attribute NC_GLOBAL project String Octocoral Community Dynamics
attribute NC_GLOBAL projects_0_acronym String Octocoral Community Dynamics
attribute NC_GLOBAL projects_0_description String NSF abstract:
Coral reefs are exposed to a diversity of natural and anthropogenic disturbances, and the consequences for ecosystem degradation have been widely publicized. However, the reported changes have been biased towards fishes and stony corals, and for Caribbean reefs, the most notable example of this bias are octocorals ("soft corals"). Although they are abundant and dominate many Caribbean reefs, they are rarely included in studies due to the difficulty of both identifying them and in quantifying their abundances. In some places there is compelling evidence that soft corals have increased in abundance, even while stony corals have become less common. This suggests that soft corals are more resilient than stony corals to the wide diversity of disturbances that have been impacting coral corals. The best coral reefs on which to study these changes are those that have been studied for decades and can provide a decadal context to more recent events, and in this regard the reefs of St. John, US Virgin Islands are unique. Stony corals on the reefs have been studied since 1987, and the soft corals from 2014. This provides unrivalled platform to evaluate patterns of octocoral abundance and recruitment; identify the patterns of change that are occurring on these reefs, and identify the processes responsible for the resilience of octocoral populations. The project will extend soft coral monitoring from 4 years to 8 years, and within this framework will examine the roles of baby corals, and their response to seafloor roughness, seawater flow, and seaweed, in determining the success of soft corals. The work will also assess whether the destructive effects of Hurricanes Irma and Maria have modified the pattern of change. In concert with these efforts the project will be closely integrated with local high schools at which the investigators will host marine biology clubs and provide independent study opportunities for their students and teachers. Unique training opportunities will be provided to undergraduate and graduate students, as well as a postdoctoral researcher, all of whom will study and work in St. John, and the investigators will train coral reef researchers to identify the species of soft corals through a hands-on workshop to be conducted in the Florida Keys.
Understanding how changing environmental conditions will affect the community structure of major biomes is the ecological objective defining the 21st century. The holistic effects of these conditions on coral reefs will be studied on shallow reefs within the Virgin Islands National Park in St. John, US Virgin Islands, which is the site of one of the longest-running, long-term studies of coral reef community dynamics in the region. With NSF-LTREB support, the investigators have been studying long-term changes in stony coral communities in this location since 1987, and in 2014 NSF-OCE support was used to build an octocoral "overlay" to this decadal perspective. The present project extends from this unique history, which has been punctuated by the effects of Hurricanes Irma and Maria, to place octocoral synecology in a decadal context, and the investigators exploit a rich suite of legacy data to better understand the present and immediate future of Caribbean coral reefs. This four-year project will advance on two concurrent fronts: first, to extend time-series analyses of octocoral communities from four to eight years to characterize the pattern and pace of change in community structure, and second, to conduct a program of hypothesis-driven experiments focused on octocoral settlement that will uncover the mechanisms allowing octocorals to more effectively colonize substrata than scleractinian corals on present day reefs. Specifically, the investigators will conduct mensurative and manipulative experiments addressing four hypotheses focusing on the roles of: (1) habitat complexity in distinguishing between octocoral and scleractinian recruitment niches, (2) the recruitment niche in mediating post-settlement success, (3) competition in algal turf and macroalgae in determining the success of octocoral and scleractian recruits, and (4) role of octocoral canopies in modulating the flux of particles and larvae to the seafloor beneath. The results of this study will be integrated to evaluate the factors driving higher ecological resilience of octocorals versus scleractinians on present-day Caribbean reefs.
This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.
attribute NC_GLOBAL projects_0_end_date String 2022-03
attribute NC_GLOBAL projects_0_geolocation String St. John, US Virgin Islands
attribute NC_GLOBAL projects_0_name String Collaborative Research: Pattern and process in the abundance and recruitment of Caribbean octocorals
attribute NC_GLOBAL projects_0_project_nid String 752508
attribute NC_GLOBAL projects_0_start_date String 2018-04
attribute NC_GLOBAL publisher_name String Biological and Chemical Oceanographic Data Management Office (BCO-DMO)
attribute NC_GLOBAL publisher_type String institution
attribute NC_GLOBAL sourceUrl String (local files)
attribute NC_GLOBAL Southernmost_Northing double 18.3029
attribute NC_GLOBAL standard_name_vocabulary String CF Standard Name Table v55
attribute NC_GLOBAL subsetVariables String Census_Year
attribute NC_GLOBAL summary String Octocoral colony heights measured during transect surveys at four sites on the south shore of St. John, US Virgin Islands in June-August 2018.
attribute NC_GLOBAL title String Octocoral colony heights measured during transect surveys at four sites on the south shore of St. John, US Virgin Islands in June-August 2018.
attribute NC_GLOBAL version String 1
attribute NC_GLOBAL Westernmost_Easting double -64.7299
attribute NC_GLOBAL xml_source String osprey2erddap.update_xml() v1.3
variable Site   String  
attribute Site bcodmo_name String site
attribute Site description String Census locations as follows:
Booby Rock: 18° 18.176' N; 064° 42.626' W; 
E Cabritte = East Cabritte: 18° 18.551 ' N: 0.64° 43.129' W; 
Europa: 18° 19.003' N; 064° 43.796' W; 
Tektite: 18° 18.775' N; 064° 43.796' W; 
Yawzi: 18.3153; -64.7257
attribute Site long_name String Site
attribute Site units String unitless
variable latitude   double  
attribute latitude _CoordinateAxisType String Lat
attribute latitude _FillValue double NaN
attribute latitude actual_range double 18.3029, 18.3167
attribute latitude axis String Y
attribute latitude bcodmo_name String latitude
attribute latitude colorBarMaximum double 90.0
attribute latitude colorBarMinimum double -90.0
attribute latitude description String Latitude; north is positive
attribute latitude ioos_category String Location
attribute latitude long_name String Latitude
attribute latitude nerc_identifier String https://vocab.nerc.ac.uk/collection/P09/current/LATX/ (external link)
attribute latitude standard_name String latitude
attribute latitude units String degrees_north
variable longitude   double  
attribute longitude _CoordinateAxisType String Lon
attribute longitude _FillValue double NaN
attribute longitude actual_range double -64.7299, -64.7104
attribute longitude axis String X
attribute longitude bcodmo_name String longitude
attribute longitude colorBarMaximum double 180.0
attribute longitude colorBarMinimum double -180.0
attribute longitude description String Longitude; east is positive
attribute longitude ioos_category String Location
attribute longitude long_name String Longitude
attribute longitude nerc_identifier String https://vocab.nerc.ac.uk/collection/P09/current/LONX/ (external link)
attribute longitude standard_name String longitude
attribute longitude units String degrees_east
variable Census_Year   short  
attribute Census_Year _FillValue short 32767
attribute Census_Year actual_range short 2018, 2018
attribute Census_Year bcodmo_name String year
attribute Census_Year description String Year of census data collection.
attribute Census_Year long_name String Census Year
attribute Census_Year nerc_identifier String https://vocab.nerc.ac.uk/collection/P01/current/YEARXXXX/ (external link)
attribute Census_Year units String unitless
variable Transect_Position   byte  
attribute Transect_Position _FillValue byte 127
attribute Transect_Position actual_range byte 0, 50
attribute Transect_Position bcodmo_name String transect
attribute Transect_Position description String Transects positioned in a marked 50x10m area with stainless steel eyebolts marking each corner; and each of the 6 transects. Transects were 10m long across the 50x10m area. So there were 0m; 10m; 20m; 30m; 40m; 50m.
attribute Transect_Position long_name String Transect Position
attribute Transect_Position units String unitless
variable Genus_Species   String  
attribute Genus_Species bcodmo_name String species_epithet
attribute Genus_Species description String Taxonomic genus and species binomial of octocoral. 'nd' indicates no corals present in quadrat.
attribute Genus_Species long_name String Genus Species
attribute Genus_Species units String unitless
variable Species_code   String  
attribute Species_code bcodmo_name String taxon_code
attribute Species_code description String Octocorals species acronym. See the Species codes dataset. 'nd' indicates no corals present in quadrat.
attribute Species_code long_name String Species Code
attribute Species_code units String unitless
variable Date   String  
attribute Date bcodmo_name String date_local
attribute Date description String Date on which data were collected; formatted as yyyy-mm-dd
attribute Date long_name String Date
attribute Date source_name String Date
attribute Date time_precision String 1970-01-01
attribute Date units String unitless
variable Side_of_transect   String  
attribute Side_of_transect bcodmo_name String unknown
attribute Side_of_transect description String Side of the transect tape (Left or Right); orientation looking towards open ocean with the nearest shore to the back.
attribute Side_of_transect long_name String Side Of Transect
attribute Side_of_transect units String unitless
variable Meter_on_transect   byte  
attribute Meter_on_transect _FillValue byte 127
attribute Meter_on_transect actual_range byte 0, 9
attribute Meter_on_transect bcodmo_name String unknown
attribute Meter_on_transect description String From 0 to 9 meters. 1x1 meter 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.
attribute Meter_on_transect long_name String Meter On Transect
attribute Meter_on_transect units String meters
variable Genus   String  
attribute Genus bcodmo_name String genus
attribute Genus description String Taxonomic genus of octocoral. 'nd' indicates no corals present in quadrat.
attribute Genus long_name String Genus
attribute Genus units String unitless
variable Height_of_living_tissue_cm   byte  
attribute Height_of_living_tissue_cm _FillValue byte 127
attribute Height_of_living_tissue_cm actual_range byte 1, 115
attribute Height_of_living_tissue_cm bcodmo_name String height
attribute Height_of_living_tissue_cm description String Maximum distance from the base of the octocoral colony until the farthest tips of the branch (i.e. not necessarily perpendicular to the substrate). All measures rounded to the nearest centimeter with the exception of 5 cm which only includes colonies >= 5 cm. Starting in 2016 measures less than 5 cm reflect colonies with thick branches which could only have
attribute Height_of_living_tissue_cm long_name String Height Of Living Tissue Cm
attribute Height_of_living_tissue_cm units String centimeters
variable Total_height   byte  
attribute Total_height _FillValue byte 127
attribute Total_height actual_range byte 6, 82
attribute Total_height bcodmo_name String height
attribute Total_height description String Total height of octocoral colony including non-living portion; measured from the base to the tip including dead tissue. (Only colonies with some living tissue were measured).
attribute Total_height long_name String Total Height
attribute Total_height units String centimeters
variable Basal_damage   byte  
attribute Basal_damage _FillValue byte 127
attribute Basal_damage actual_range byte 1, 56
attribute Basal_damage bcodmo_name String unknown
attribute Basal_damage description String Height measured from the base to the living tissue.
attribute Basal_damage long_name String Basal Damage
attribute Basal_damage units String centimeters
variable Damage   byte  
attribute Damage _FillValue byte 127
attribute Damage actual_range byte 0, 4
attribute Damage bcodmo_name String unknown
attribute Damage description String Damage code: 0 when there was no damage or only a few small cm scale areas of damage making up 5% but < 25% of the colony have injuries;Damage = 2 when injuries are in > 25% but < 50% of the colony; Damage = 3 when in juries are > 50% of the colony but < 75%; and Damage = 4 when a colony has injuries in > 75% of the colony. No data was recorded in Damage column at Tektite in 2018.
attribute Damage long_name String Damage
attribute Damage units String unitless
variable Comments_1   String  
attribute Comments_1 bcodmo_name String comment
attribute Comments_1 description String Comments about the data: '# C. gibbosum' refers to the number of Cyphoma gibbosum found on the colony; 'aa2' indicates the colony is similar to A. americana but most likely belongs to an as of yet undescribed Antillogorgia species;  'pp2' indicates the colony is similar to Pseudoplexaura porosa but the identification is uncertain; Millepora indicates overgrowth of part of the colony by Millepora.
attribute Comments_1 long_name String Comments 1
attribute Comments_1 units String unitless
variable Comments_2_sample_tag   String  
attribute Comments_2_sample_tag bcodmo_name String sample
attribute Comments_2_sample_tag description String Sample Numbers for octocorals that were sampled in order to get IDs based on sclerites.
attribute Comments_2_sample_tag long_name String Comments 2 Sample Tag
attribute Comments_2_sample_tag nerc_identifier String https://vocab.nerc.ac.uk/collection/P02/current/ACYC/ (external link)
attribute Comments_2_sample_tag units String unitless

The information in the table above is also available in other file formats (.csv, .htmlTable, .itx, .json, .jsonlCSV1, .jsonlCSV, .jsonlKVP, .mat, .nc, .nccsv, .tsv, .xhtml) via a RESTful web service.

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