ERDDAP > info > bcodmo_dataset_662791

Grid DAP Data	Sub- set	Table DAP Data	Make A Graph	W M S	Source Data Files	Acces- sible	Title	Sum- mary	FGDC, ISO, Metadata	Back- ground Info	RSS	E mail	Institution	Dataset ID
		data	graph		files	public	[Nearest neighbor surveys] - Data describing interactions between neighboring coral colonies on St. John, Virgin Islands in 2014. (LTREB Long-term coral reef community dynamics in St. John, USVI: 1987-2019)		F   I   M	background			BCO-DMO	bcodmo_dataset_662791

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	Methodology\u00a0from\u00a0Gambrel, B.\u00a0and\u00a0Lasker, H.R., 2016 To further examine the spatial distribution of colonies and potential competition among them,\u00a0nearest neighbor data\u00a0were collected along the belt\u00a0transects from\u00a0each site. Each transect had 20 sampling\u00a0points arranged\u00a0at the corners of every 1 m2 quadrat\u00a0along the\u00a0first 9 m of each transect. The octocoral\u00a0colony closest\u00a0to each sampling point was selected, identified,and the distance between its base and the\u00a0base of\u00a0its nearest branching octocoral neighbor\u00a0was measured\u00a0to the nearest centimeter (Fig. S1\u00a0in the\u00a0Supplement). The height, width, and length\u00a0of each\u00a0colony was measured to the nearest\u00a0centimeter to\u00a0calculate\u00a0cross-sectional\u00a0area (height \u00d7 length)\u00a0and volume\u00a0(height \u00d7 width \u00d7 length), and the\u00a0proximity of\u00a0the colony\u2019s branches to nearby octocorals\u00a0was also\u00a0noted. Due to the water flow and the\u00a0resulting oscillation\u00a0of colony branches, measurements\u00a0were made\u00a0when the branches were vertical in the\u00a0water column\u00a0to optimize the precision of our measurements.To increase sample sizes, an additional 9\u00a0m transect\u00a0parallel to the other 5 was sampled at\u00a0each site. The nature of the spatial distribution of\u00a0octocorals at\u00a0each site was determined from the nearest-neighbor data\u00a0following Clark & Evans (1954).\u00a0Observed and\u00a0expected mean distances between the\u00a0octocoral neighbors\u00a0were calculated using the total\u00a0distance between\u00a0neighbors, sample size (120 pairs of\u00a0octocorals per\u00a0site) and the density of octocorals at each site(calculated from the belt transect data). The ratio (R)of the observed and expected (given a randomly\u00a0distributed octocoral\u00a0community) mean distances between octocoral neighbors describes the\u00a0octocoral distribution\u00a0at each site, where R = 1 denotes a\u00a0random distribution, R < 1, an aggregated distribution,and R > 1, a uniform distribution (Clark & Evans1954). The significance of R was determined by\u00a0analyzing the\u00a0standard variate of the normal curve (c), since the measured distances between neighbors in\u00a0a randomly\u00a0dispersed community are expected to\u00a0follow a\u00a0normal distribution. The effects of colony\u2212colony proximity on colony size were assessed by correlating the distance\u00a0between\u00a0neighbors at the base with the sum of\u00a0their sizes\u00a0(Pielou 1962). If competition affects growth, then the closer\u00a0the organisms\u00a0are, the smaller their expected sizes will be (Pielou 1962). Implicit in these analyses is the notion that size is both an indicator of resource use and of success in acquiring resources. The relationships among the distance between octocoral neighbors at the base (divided into 3 distance groups to make the data categorical: 5\u221214 cm, 15\u221224\u00a0cm\u00a0and 25\u221234 cm), branch proximity and site were analyzed using a hierarchical log-linear test in SPSS. The relationship between the distance between neighbors and branch proximity was further analyzed in a separate log-linear test in SPSS.
attribute	NC_GLOBAL	awards_0_award_nid	String	562090
attribute	NC_GLOBAL	awards_0_award_number	String	OCE-1334052
attribute	NC_GLOBAL	awards_0_data_url	String	http://www.nsf.gov/awardsearch/showAward.do?AwardNumber=1334052
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	Nearest Neighbor Survey Howard Lasker, PI Version 14 October 2016
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	2016-10-25T21:41:41Z
attribute	NC_GLOBAL	date_modified	String	2019-04-18T17:39:09Z
attribute	NC_GLOBAL	defaultDataQuery	String	&amp;time&lt;now
attribute	NC_GLOBAL	doi	String	10.1575/1912/bco-dmo.662791.1
attribute	NC_GLOBAL	Easternmost_Easting	double	-64.72415
attribute	NC_GLOBAL	geospatial_lat_max	double	18.31685
attribute	NC_GLOBAL	geospatial_lat_min	double	18.3166
attribute	NC_GLOBAL	geospatial_lat_units	String	degrees_north
attribute	NC_GLOBAL	geospatial_lon_max	double	-64.72415
attribute	NC_GLOBAL	geospatial_lon_min	double	-64.72988
attribute	NC_GLOBAL	geospatial_lon_units	String	degrees_east
attribute	NC_GLOBAL	infoUrl	String	https://www.bco-dmo.org/dataset/662791
attribute	NC_GLOBAL	institution	String	BCO-DMO
attribute	NC_GLOBAL	keywords	String	bco, bco-dmo, biological, chemical, colony, data, dataset, distance, dmo, erddap, height, inhibition, latitude, longitude, management, meter, oceanography, office, preliminary, site, species, thickness, transect, visible, visibleInhibition, width
attribute	NC_GLOBAL	license	String	https://www.bco-dmo.org/dataset/662791/license
attribute	NC_GLOBAL	metadata_source	String	https://www.bco-dmo.org/api/dataset/662791
attribute	NC_GLOBAL	Northernmost_Northing	double	18.31685
attribute	NC_GLOBAL	param_mapping	String	{'662791': {'lat': 'master - latitude', 'lon': 'master - longitude'}}
attribute	NC_GLOBAL	parameter_source	String	https://www.bco-dmo.org/mapserver/dataset/662791/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	Hannah Ake
attribute	NC_GLOBAL	people_1_person_nid	String	650173
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	St. John LTREB,VI Octocorals
attribute	NC_GLOBAL	projects_0_acronym	String	St. John LTREB
attribute	NC_GLOBAL	projects_0_description	String	Long Term Research in Environmental Biology (LTREB) in US Virgin Islands: From the NSF award abstract: In an era of growing human pressures on natural resources, there is a critical need to understand how major ecosystems will respond, the extent to which resource management can lessen the implications of these responses, and the likely state of these ecosystems in the future. Time-series analyses of community structure provide a vital tool in meeting these needs and promise a profound understanding of community change. This study focuses on coral reef ecosystems; an existing time-series analysis of the coral community structure on the reefs of St. John, US Virgin Islands, will be expanded to 27 years of continuous data in annual increments. Expansion of the core time-series data will be used to address five questions: (1) To what extent is the ecology at a small spatial scale (1-2 km) representative of regional scale events (10's of km)? (2) What are the effects of declining coral cover in modifying the genetic population structure of the coral host and its algal symbionts? (3) What are the roles of pre- versus post-settlement events in determining the population dynamics of small corals? (4) What role do physical forcing agents (other than temperature) play in driving the population dynamics of juvenile corals? and (5) How are populations of other, non-coral invertebrates responding to decadal-scale declines in coral cover? Ecological methods identical to those used over the last two decades will be supplemented by molecular genetic tools to understand the extent to which declining coral cover is affecting the genetic diversity of the corals remaining. An information management program will be implemented to create broad access by the scientific community to the entire data set. The importance of this study lies in the extreme longevity of the data describing coral reefs in a unique ecological context, and the immense potential that these data possess for understanding both the patterns of comprehensive community change (i.e., involving corals, other invertebrates, and genetic diversity), and the processes driving them. Importantly, as this project is closely integrated with resource management within the VI National Park, as well as larger efforts to study coral reefs in the US through the NSF Moorea Coral Reef LTER, it has a strong potential to have scientific and management implications that extend further than the location of the study. The following publications and data resulted from this project: 2015    Edmunds PJ, Tsounis G, Lasker HR (2015) Differential distribution of octocorals and scleractinians around St. John and St. Thomas, US Virgin Islands. Hydrobiologia. doi: 10.1007/s10750-015-2555-zoctocoral - sp. abundance and distributionDownload complete data for this publication (Excel file) 2015    Lenz EA, Bramanti L, Lasker HR, Edmunds PJ. Long-term variation of octocoral populations in St. John, US Virgin Islands. Coral Reefs DOI 10.1007/s00338-015-1315-xoctocoral survey - densitiesoctocoral counts - photoquadrats vs. insitu surveyoctocoral literature reviewDownload complete data for this publication (Excel file) 2015   Privitera-Johnson, K., et al., Density-associated recruitment in octocoral communities in St. John, US Virgin Islands, J.Exp. Mar. Biol. Ecol. DOI 10.1016/j.jembe.2015.08.006octocoral recruitmentDownload complete data for this publication (Excel file) 2014    Edmunds PJ. Landscape-scale variation in coral reef community structure in the United States Virgin Islands. Marine Ecology Progress Series 509: 137–152. DOI 10.3354/meps10891. Data at MCR-VINP. Download complete data for this publication (Excel file) 2014    Edmunds PJ, Nozawa Y, Villanueva RD.  Refuges modulate coral recruitment in the Caribbean and Pacific.  Journal of Experimental Marine Biology and Ecology 454: 78-84. DOI: 10.1016/j.jembe.2014.02.00 Data at MCR-VINP.Download complete data for this publication (Excel file) 2014    Edmunds PJ, Gray SC.  The effects of storms, heavy rain, and sedimentation on the shallow coral reefs of St. John, US Virgin Islands.  Hydrobiologia 734(1):143-148. Data at MCR-VINP.Download complete data for this publication (Excel file) 2014    Levitan, D, Edmunds PJ, Levitan K. What makes a species common? No evidence of density-dependent recruitment or mortality of the sea urchin Diadema antillarum after the 1983-1984 mass mortality.  Oecologia. DOI 10.1007/s00442-013-2871-9. Data at MCR-VINP.Download complete data for this publication (Excel file) 2014    Lenz EA, Brown D, Didden C, Arnold A, Edmunds PJ.  The distribution of hermit crabs and their gastropod shells on shallow reefs in St. John, US Virgin Islands.  Bulletin of Marine Science 90(2):681-692. https://dx.doi.org/10.5343/bms.2013.1049 Data at MCR-VINP.Download complete data for this publication (Excel file) 2013    Edmunds PJ.  Decadal-scale changes in the community structure of coral reefs in St. John, US Virgin Islands.  Marine Ecology Progress Series 489: 107-123. Data at MCR-VINP.Download complete data for this publication (zipped Excel files) 2013    Brown D, Edmunds PJ.  Long-term changes in the population dynamics of the Caribbean hydrocoral Millepora spp.  J. Exp Mar Biol Ecol 441: 62-70. doi: 10.1016/j.jembe.2013.01.013Millepora colony sizeMillepora cover - temps - storms 1992-2008Millepora cover 1992-2008seawater temperature USVI 1992-2008storms USVI 1992-2008Download complete data for this publication (Excel file) 2012    Brown D, Edmunds PJ. The hermit crab Calcinus tibicen lives commensally on Millepora spp. in St. John, United States Virgin Islands.  Coral Reefs 32: 127-135. doi: 10.1007/s00338-012-0948-2crab abundance and coral sizecrab displacement behaviorcrab nocturnal surveyscrab predator avoidanceDownload complete data for this publication (Excel file) 2011    Green DH, Edmunds PJ.  Spatio-temporal variability of coral recruitment on shallow reefs in St. John, US Virgin Islands.  Journal of Experimenal Marine Biology and Ecology 397: 220-229. Data at MCR-VINP.Download complete data for this publication (Excel file) 2011    Colvard NB, Edmunds PJ. (2011) Decadal-scale changes in invertebrate abundances on a Caribbean coral reef.  Journal of Experimental Marine Biology and Ecology. 397(2): 153-160. doi: 10.1016/j.jembe.2010.11.015benthic invert codesinverts - Tektite and Yawzi Ptinverts - pooledDownload complete data for this publication (Excel file)
attribute	NC_GLOBAL	projects_0_end_date	String	2014-04
attribute	NC_GLOBAL	projects_0_geolocation	String	St. John, U.S. Virgin Islands; California State University Northridge
attribute	NC_GLOBAL	projects_0_name	String	LTREB Long-term coral reef community dynamics in St. John, USVI: 1987-2019
attribute	NC_GLOBAL	projects_0_project_nid	String	2272
attribute	NC_GLOBAL	projects_0_project_website	String	http://coralreefs.csun.edu/
attribute	NC_GLOBAL	projects_0_start_date	String	2009-05
attribute	NC_GLOBAL	projects_1_acronym	String	VI Octocorals
attribute	NC_GLOBAL	projects_1_description	String	The recent past has not been good for coral reefs, and journals have been filled with examples of declining coral cover, crashing fish populations, rising cover of macroalgae, and a future potentially filled with slime. However, reefs are more than the corals and fishes for which they are known best, and their biodiversity is affected strongly by other groups of organisms. The non-coral fauna of reefs is being neglected in the rush to evaluate the loss of corals and fishes, and this project will add on to an on-going long term ecological study by studying soft corals. This project will be focused on the ecology of soft corals on reefs in St. John, USVI to understand the Past, Present and the Future community structure of soft corals in a changing world. For the Past, the principal investigators will complete a retrospective analysis of octocoral abundance in St. John between 1992 and the present, as well as Caribbean-wide since the 1960's. For the Present, they will: (i) evaluate spatio-temporal changes between soft corals and corals, (ii) test for the role of competition with macroalgae and between soft corals and corals as processes driving the rising abundance of soft corals, and (iii) explore the role of soft corals as "animal forests" in modifying physical conditions beneath their canopy, thereby modulating recruitment dynamics. For the Future the project will conduct demographic analyses on key soft corals to evaluate annual variation in population processes and project populations into a future impacted by global climate change. This project was funded to provide and independent "overlay" to the ongoing LTREB award (DEB-1350146, co-funded by OCE, PI Edmunds) focused on the long-term dynamics of coral reefs in St. John. Note: This project is closely associated with the project "RAPID: Resilience of Caribbean octocorals following Hurricanes Irma and Maria". See: https://www.bco-dmo.org/project/749653. The following publications and data resulted from this project: 2017 Tsounis, G., and P. J. Edmunds. Three decades of coral reef community dynamics in St. John, USVI: a contrast of scleractinians and octocorals. Ecosphere 8(1):e01646. DOI: 10.1002/ecs2.1646Rainfall and temperature dataCoral and macroalgae abundance and distributionDescriptions of hurricanes affecting St. John 2016 Gambrel, B. and Lasker, H.R. Marine Ecology Progress Series 546: 85–95, DOI: 10.3354/meps11670Colony to colony interactionsEunicea flexuosa interactionsGorgonia ventalina asymmetryNearest neighbor surveys 2015 Lenz EA, Bramanti L, Lasker HR, Edmunds PJ. Long-term variation of octocoral populations in St. John, US Virgin Islands. Coral Reefs DOI 10.1007/s00338-015-1315-xoctocoral survey - densitiesoctocoral counts - photoquadrats vs. insitu surveyoctocoral literature reviewDownload complete data for this publication (Excel file) 2015 Privitera-Johnson, K., et al., Density-associated recruitment in octocoral communities in St. John, US Virgin Islands, J.Exp. Mar. Biol. Ecol. DOI: 10.1016/j.jembe.2015.08.006octocoral density dependenceDownload complete data for this publication (Excel file) Other datasets related to this project:octocoral transects - adult colony height
attribute	NC_GLOBAL	projects_1_end_date	String	2016-08
attribute	NC_GLOBAL	projects_1_geolocation	String	St. John, US Virgin Islands: 18.3185, 64.7242
attribute	NC_GLOBAL	projects_1_name	String	Ecology and functional biology of octocoral communities
attribute	NC_GLOBAL	projects_1_project_nid	String	562086
attribute	NC_GLOBAL	projects_1_project_website	String	http://coralreefs.csun.edu/
attribute	NC_GLOBAL	projects_1_start_date	String	2013-09
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	18.3166
attribute	NC_GLOBAL	standard_name_vocabulary	String	CF Standard Name Table v55
attribute	NC_GLOBAL	summary	String	Data describing interactions between neighboring coral colonies on St. John, Virgin Islands in 2014.
attribute	NC_GLOBAL	title	String	[Nearest neighbor surveys] - Data describing interactions between neighboring coral colonies on St. John, Virgin Islands in 2014. (LTREB Long-term coral reef community dynamics in St. John, USVI: 1987-2019)
attribute	NC_GLOBAL	version	String	1
attribute	NC_GLOBAL	Westernmost_Easting	double	-64.72988
attribute	NC_GLOBAL	xml_source	String	osprey2erddap.update_xml() v1.3
variable	site		String
attribute	site	bcodmo_name	String	site
attribute	site	description	String	Site where sampling occurred
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	18.3166, 18.31685
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; N 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/
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	-64.72988, -64.72415
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; W is positve
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	colony		byte
attribute	colony	_FillValue	byte	127
attribute	colony	actual_range	byte	1, 2
attribute	colony	bcodmo_name	String	sample
attribute	colony	description	String	PI issued colony ID
attribute	colony	long_name	String	Colony
attribute	colony	nerc_identifier	String	https://vocab.nerc.ac.uk/collection/P02/current/ACYC/
attribute	colony	units	String	unitless
variable	transect		String
attribute	transect	bcodmo_name	String	transect
attribute	transect	description	String	Transect where sampling occurred
attribute	transect	long_name	String	Transect
attribute	transect	units	String	unitless
variable	meter		byte
attribute	meter	_FillValue	byte	127
attribute	meter	actual_range	byte	0, 9
attribute	meter	bcodmo_name	String	transect
attribute	meter	description	String	Meter on transect where sampling occurred
attribute	meter	long_name	String	Meter
attribute	meter	units	String	meters
variable	species		String
attribute	species	bcodmo_name	String	species
attribute	species	description	String	The octocoral colony closest to each sampling point was selected and identified.
attribute	species	long_name	String	Species
attribute	species	units	String	unitless
variable	height		byte
attribute	height	_FillValue	byte	127
attribute	height	actual_range	byte	2, 120
attribute	height	bcodmo_name	String	height
attribute	height	description	String	Height of each colony was measured to the nearest centimeter.
attribute	height	long_name	String	Height
attribute	height	units	String	centimeters
variable	width		byte
attribute	width	_FillValue	byte	127
attribute	width	actual_range	byte	1, 90
attribute	width	bcodmo_name	String	width
attribute	width	description	String	Width of each colony was measured to the nearest centimeter.
attribute	width	long_name	String	Width
attribute	width	units	String	centimeters
variable	thickness		byte
attribute	thickness	_FillValue	byte	127
attribute	thickness	actual_range	byte	0, 55
attribute	thickness	bcodmo_name	String	length
attribute	thickness	description	String	Thickness of each colony was measured to the nearest centimeter.
attribute	thickness	long_name	String	Thickness
attribute	thickness	units	String	centimeters
variable	visibleInhibition		byte
attribute	visibleInhibition	_FillValue	byte	127
attribute	visibleInhibition	actual_range	byte	0, 2
attribute	visibleInhibition	bcodmo_name	String	sample_descrip
attribute	visibleInhibition	description	String	Visible inhibition (1) denotes colony asymmetry or damage due to abrasion between colonies; (0) indicates no visible inhibition.
attribute	visibleInhibition	long_name	String	Visible Inhibition
attribute	visibleInhibition	units	String	unitless
variable	distance		byte
attribute	distance	_FillValue	byte	127
attribute	distance	actual_range	byte	0, 48
attribute	distance	bcodmo_name	String	unknown
attribute	distance	description	String	The distance between the measured colony's base and the base of its nearest branching octocoral neighbor was measured to the nearest centimeter.
attribute	distance	long_name	String	Distance
attribute	distance	units	String	centimeters

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.