ERDDAP > info > bcodmo_dataset_751176

Grid DAP Data	Sub- set	Table DAP Data	Make A Graph	W M S	Source Data Files	Acces- sible	Title	Sum- mary	ISO, Metadata	Back- ground Info	RSS	E mail	Institution	Dataset ID
	set	data	graph		files	public	Octocoral species abundance during transect surveys at four sites on the south shore of St. John, US Virgin Islands from November to December 2017		I   M	background			BCO-DMO	bcodmo_dataset_751176

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.\u00a0 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.\u00a0 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.\u00a0 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.\u00a0 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).\u00a0\u00a0 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.\u00a0 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. 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.\u00a0 Sclerites from those samples were examined for species identification. 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).\u00a0 All measures rounded to the nearest cm with the exception of 5 cm which only includes colonies >= 5 cm.\u00a0 Starting in 2016, measures less than 5 cm reflect colonies with thick branches which could only have <5 cm heights due to partial mortality. 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.\u00a0 (Only colonies with some living tissue were measured). Species names for field_codes in this dataset\u00a0can be found in the related dataset: [https://www.bco-dmo.org/dataset/733063](\\"https://www.bco- dmo.org/dataset/733063\\") These data are a continuation of BCO-DMO project \"Ecology and functional biology of octocoral communities\" ([http://www.bco- dmo.org/project/562086](\\"https://www.bco-dmo.org/project/562086\\"))
attribute	NC_GLOBAL	awards_0_award_nid	String	749652
attribute	NC_GLOBAL	awards_0_award_number	String	OCE-1801475
attribute	NC_GLOBAL	awards_0_data_url	String	http://www.nsf.gov/awardsearch/showAward.do?AwardNumber=1801475
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	Daniel Thornhill
attribute	NC_GLOBAL	awards_0_program_manager_nid	String	722161
attribute	NC_GLOBAL	cdm_data_type	String	Other
attribute	NC_GLOBAL	comment	String	Transect surveys of octocoral species abundance PI: Howard Lasker Version: 2018-11-10
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/
attribute	NC_GLOBAL	data_source	String	extract_data_as_tsv version 2.3 19 Dec 2019
attribute	NC_GLOBAL	date_created	String	2018-12-18T14:58:33Z
attribute	NC_GLOBAL	date_modified	String	2019-11-04T20:08:16Z
attribute	NC_GLOBAL	defaultDataQuery	String	&amp;time&lt;now
attribute	NC_GLOBAL	doi	String	10.1575/1912/bco-dmo.751176.1
attribute	NC_GLOBAL	Easternmost_Easting	double	-64.71043333
attribute	NC_GLOBAL	geospatial_lat_max	double	18.31671667
attribute	NC_GLOBAL	geospatial_lat_min	double	18.30293333
attribute	NC_GLOBAL	geospatial_lat_units	String	degrees_north
attribute	NC_GLOBAL	geospatial_lon_max	double	-64.71043333
attribute	NC_GLOBAL	geospatial_lon_min	double	-64.72993333
attribute	NC_GLOBAL	geospatial_lon_units	String	degrees_east
attribute	NC_GLOBAL	infoUrl	String	https://www.bco-dmo.org/dataset/751176
attribute	NC_GLOBAL	institution	String	BCO-DMO
attribute	NC_GLOBAL	keywords	String	bco, bco-dmo, biological, census, Census_Year, chemical, code, comments, Comments_1, Comments_2, data, dataset, date, dmo, erddap, genus, Genus_Species, height, Height_of_living_tissue, latitude, living, longitude, management, meter, Meter_on_transect, oceanography, office, position, preliminary, side, Side_of_transect, site, species, Species_code, tissue, total, Total_Height, transect, Transect_Position, year
attribute	NC_GLOBAL	license	String	https://www.bco-dmo.org/dataset/751176/license
attribute	NC_GLOBAL	metadata_source	String	https://www.bco-dmo.org/api/dataset/751176
attribute	NC_GLOBAL	Northernmost_Northing	double	18.31671667
attribute	NC_GLOBAL	param_mapping	String	{'751176': {'lat': 'flag - latitude', 'lon': 'flag - longitude'}}
attribute	NC_GLOBAL	parameter_source	String	https://www.bco-dmo.org/mapserver/dataset/751176/parameters
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	Mathew Biddle
attribute	NC_GLOBAL	people_1_person_nid	String	708682
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	Octocorals and Hurricanes
attribute	NC_GLOBAL	projects_0_acronym	String	Octocorals and Hurricanes
attribute	NC_GLOBAL	projects_0_description	String	NSF Award Abstract: 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. 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. Note: This project is closely associated with the project "Ecology and functional biology of octocoral communities". See: https://www.bco-dmo.org/project/562086.
attribute	NC_GLOBAL	projects_0_end_date	String	2019-10
attribute	NC_GLOBAL	projects_0_geolocation	String	St John, US Virgin Islands
attribute	NC_GLOBAL	projects_0_name	String	RAPID: Resilience of Caribbean octocorals following Hurricanes Irma and Maria
attribute	NC_GLOBAL	projects_0_project_nid	String	749653
attribute	NC_GLOBAL	projects_0_start_date	String	2017-11
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	18.30293333
attribute	NC_GLOBAL	standard_name_vocabulary	String	CF Standard Name Table v55
attribute	NC_GLOBAL	subsetVariables	String	Census_Year
attribute	NC_GLOBAL	summary	String	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.
attribute	NC_GLOBAL	title	String	Octocoral species abundance during transect surveys at four sites on the south shore of St. John, US Virgin Islands from November to December 2017
attribute	NC_GLOBAL	version	String	1
attribute	NC_GLOBAL	Westernmost_Easting	double	-64.72993333
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
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	18.30293333, 18.31671667
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 in degrees north
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/
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	-64.72993333, -64.71043333
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 in degrees east
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/
attribute	longitude	standard_name	String	longitude
attribute	longitude	units	String	degrees_east
variable	Census_Year		float
attribute	Census_Year	_FillValue	float	NaN
attribute	Census_Year	actual_range	float	2017.11, 2017.11
attribute	Census_Year	bcodmo_name	String	year
attribute	Census_Year	description	String	Census Year
attribute	Census_Year	long_name	String	Census Year
attribute	Census_Year	nerc_identifier	String	https://vocab.nerc.ac.uk/collection/P01/current/YEARXXXX/
attribute	Census_Year	units	String	unitless
variable	Date		int
attribute	Date	_FillValue	int	2147483647
attribute	Date	actual_range	int	20171120, 20171201
attribute	Date	bcodmo_name	String	date
attribute	Date	description	String	Day - Month - Year on which data were collected.
attribute	Date	long_name	String	Date
attribute	Date	nerc_identifier	String	https://vocab.nerc.ac.uk/collection/P01/current/ADATAA01/
attribute	Date	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 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.
attribute	Transect_Position	long_name	String	Transect Position
attribute	Transect_Position	units	String	meters (m)
variable	Side_of_transect		String
attribute	Side_of_transect	bcodmo_name	String	site_descrip
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	transect
attribute	Meter_on_transect	description	String	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
attribute	Meter_on_transect	long_name	String	Meter On Transect
attribute	Meter_on_transect	units	String	meters (m)
variable	Species_code		String
attribute	Species_code	bcodmo_name	String	species
attribute	Species_code	description	String	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"
attribute	Species_code	long_name	String	Species Code
attribute	Species_code	units	String	unitless
variable	Height_of_living_tissue		byte
attribute	Height_of_living_tissue	_FillValue	byte	127
attribute	Height_of_living_tissue	actual_range	byte	2, 108
attribute	Height_of_living_tissue	bcodmo_name	String	height
attribute	Height_of_living_tissue	description	String	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
attribute	Height_of_living_tissue	long_name	String	Height Of Living Tissue
attribute	Height_of_living_tissue	units	String	centimeters (cm)
variable	Total_Height		byte
attribute	Total_Height	_FillValue	byte	127
attribute	Total_Height	actual_range	byte	4, 108
attribute	Total_Height	bcodmo_name	String	height
attribute	Total_Height	description	String	total height
attribute	Total_Height	long_name	String	Total Height
attribute	Total_Height	units	String	centimeters (cm)
variable	Genus_Species		String
attribute	Genus_Species	bcodmo_name	String	species
attribute	Genus_Species	description	String	Full species name
attribute	Genus_Species	long_name	String	Genus Species
attribute	Genus_Species	units	String	unitless
variable	Genus		String
attribute	Genus	bcodmo_name	String	genus
attribute	Genus	description	String	Genus name
attribute	Genus	long_name	String	Genus
attribute	Genus	units	String	unitless
variable	Species		String
attribute	Species	bcodmo_name	String	species
attribute	Species	description	String	Species name
attribute	Species	long_name	String	Species
attribute	Species	units	String	unitless
variable	Comments_1		String
attribute	Comments_1	bcodmo_name	String	unknown
attribute	Comments_1	description	String	Comments. C. gibbosum denotes the presence of Cyphoma giibbosum a grazing snail that strips living tissue from octocoral colonies.
attribute	Comments_1	long_name	String	Comments 1
attribute	Comments_1	units	String	unitless
variable	Comments_2		short
attribute	Comments_2	_FillValue	short	32767
attribute	Comments_2	actual_range	short	151, 159
attribute	Comments_2	bcodmo_name	String	unknown
attribute	Comments_2	description	String	Numbers refer to sample numbers of 4 cm dried tissue specimens collected for species identification.
attribute	Comments_2	long_name	String	Comments 2
attribute	Comments_2	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.