ERDDAP > info > bcodmo_dataset_655455

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
	set	data	graph		files	public	[Effect of lionfish in standardized habitat units in seagrass] - Effect of lionfish presence on native fish abundance in standardized habitat units in seagrass in Eleuthera, Bahamas during 2013 (Biodiversity Loss Effects Lionfish project) (Mechanisms and Consequences of Fish Biodiversity Loss on Atlantic Coral Reefs Caused by Invasive Pacific Lionfish)		I   M	background			BCO-DMO	bcodmo_dataset_655455

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
attribute	NC_GLOBAL	acquisition_description	String	This was a manipulative field experiment conducted during June \u2013 August 2013 to determine whether lionfish affect native fishes in the areas surrounding coral patch reefs.\u00a0 Sixteen patch reefs were paired based on similarity in location, size, benthic composition, initial fish community, and surrounding habitat, then one reef in each pair was randomly assigned to either low-lionfish or high-lionfish treatments.\u00a0 A pair of divers removed all lionfish from the eight low-lionfish reefs during weekly visits (resulting mean lionfish density on low-lionfish reefs was 0.01 to 0.03 lionfish/square meter).\u00a0 The eight remaining reefs were maintained as high-lionfish treatment reefs, with divers adding lionfish to the reefs to keep densities within the naturally occurring range observed in Rock Sound (resulting mean lionfish density on high-lionfish reefs was 0.12 to 0.29 lionfish/square meter. \u00a0 A pair of divers returned to each reef weekly for 7 weeks to census the native fish communities on the main reefs and in three different habitat types in the surrounding areas.\u00a0 During all surveys, divers counted all fish less than 15 cm TL and all piscivores of any size.\u00a0 Around each main reef, selected between one and four satellite coral heads were haphazardly selected to survey.\u00a0 Satellite coral heads were small structures comprised of one to several coral colonies, ranging in size from 0.31 to 4.7 meters squared and located between 3.8 and 25.1 m from the main reefs.\u00a0 In addition to being smaller than the main reefs, satellite heads also supported neither resident lionfish nor native piscivores.\u00a0 To document native fish communities in open sand and seagrass areas without any coral heads or other hard structures, two 35 m transects were run outward from each main reef in randomly selected directions.\u00a0 Divers surveyed fish at 5-m intervals within 2 square meter plots around the transect tapes.\u00a0 To obtain a standardized measure of fish communities at set distances from each reef that accounted for habitat type, patch size, and initial fish community, I set-up small (0.5 meters squared) identical standardized habitat units (SHUs) consisting of 9 empty queen conch (Strombus gigas) shells with their apertures facing upward.\u00a0 All reefs had one row of 4 SHUs located at 7-m intervals extending away from the reef.\u00a0 Half of the reefs (4 high-lionfish and 4 low-lionfish reefs) also had a second row of 2 SHUs located at 15 m and 31 m from the reef and extending outward in the opposite direction from the first row.\u00a0 During the final week of the experiment, in addition to visually surveying the fish communities on the SHUs, a pair of divers placed all conch shells in dry bags and brought them up to a boat. Each shell was shaken in a bucket of seawater to remove and count any individuals hiding in the shells. Note that five of the 16 main coral patch reefs had high abundances of small, juvenile grunts (Haemulon spp.), which formed large schools of approximately 100 - 300 individuals above the reefs.\u00a0 Counts of these juvenile grunts are not considered to be precise or accurate. \u00a0
attribute	NC_GLOBAL	awards_0_award_nid	String	561016
attribute	NC_GLOBAL	awards_0_award_number	String	OCE-1233027
attribute	NC_GLOBAL	awards_0_data_url	String	http://www.nsf.gov/awardsearch/showAward.do?AwardNumber=1233027
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	Seagrass Habitats - Standardized Habitat Units Lead PI: Mark Hixon Sub-Project Lead: Casey Benkwitt Version 12 August 2016 Species codes are first two letters of genus and species; See species key.
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	2016-08-23T16:19:26Z
attribute	NC_GLOBAL	date_modified	String	2019-05-14T17:15:24Z
attribute	NC_GLOBAL	defaultDataQuery	String	&time<now
attribute	NC_GLOBAL	doi	String	10.1575/1912/bco-dmo.655455.1
attribute	NC_GLOBAL	infoUrl	String	https://www.bco-dmo.org/dataset/655455
attribute	NC_GLOBAL	institution	String	BCO-DMO
attribute	NC_GLOBAL	keywords	String	bco, bco-dmo, biological, chemical, data, dataset, day, distance, dmo, end, erddap, length, length_max_1, length_max_10, length_max_15, length_max_2, length_max_3, length_max_4, length_max_5, length_max_6, length_max_7, length_max_8, length_max_9, management, max, month, notes, number, oceanography, office, preliminary, presence, reef, row, shu, shu_row, species, start, survey, survey_type, time, time_end, time_start, treatment, type, visit, visit_number, year
attribute	NC_GLOBAL	license	String	https://www.bco-dmo.org/dataset/655455/license
attribute	NC_GLOBAL	metadata_source	String	https://www.bco-dmo.org/api/dataset/655455
attribute	NC_GLOBAL	param_mapping	String	{'655455': {}}
attribute	NC_GLOBAL	parameter_source	String	https://www.bco-dmo.org/mapserver/dataset/655455/parameters
attribute	NC_GLOBAL	people_0_affiliation	String	University of Hawaii
attribute	NC_GLOBAL	people_0_person_name	String	Mark Hixon
attribute	NC_GLOBAL	people_0_person_nid	String	51647
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	Oregon State University
attribute	NC_GLOBAL	people_1_affiliation_acronym	String	OSU
attribute	NC_GLOBAL	people_1_person_name	String	Cassandra E. Benkwitt
attribute	NC_GLOBAL	people_1_person_nid	String	51706
attribute	NC_GLOBAL	people_1_role	String	Contact
attribute	NC_GLOBAL	people_1_role_type	String	related
attribute	NC_GLOBAL	people_2_affiliation	String	Woods Hole Oceanographic Institution
attribute	NC_GLOBAL	people_2_affiliation_acronym	String	WHOI BCO-DMO
attribute	NC_GLOBAL	people_2_person_name	String	Hannah Ake
attribute	NC_GLOBAL	people_2_person_nid	String	650173
attribute	NC_GLOBAL	people_2_role	String	BCO-DMO Data Manager
attribute	NC_GLOBAL	people_2_role_type	String	related
attribute	NC_GLOBAL	project	String	BiodiversityLossEffects_lionfish
attribute	NC_GLOBAL	projects_0_acronym	String	BiodiversityLossEffects_lionfish
attribute	NC_GLOBAL	projects_0_description	String	The Pacific red lionfish (Pterois volitans), a popular aquarium fish, was introduced to the Atlantic Ocean in the vicinity of Florida in the late 20th century. Voraciously consuming small native coral-reef fishes, including the juveniles of fisheries and ecologically important species, the invader has undergone a population explosion that now ranges from the U.S. southeastern seaboard to the Gulf of Mexico and across the greater Caribbean region. The PI's past research determined that invasive lionfish (1) have escaped their natural enemies in the Pacific (lionfish are much less abundant in their native range); (2) are not yet controlled by Atlantic predators, competitors, or parasites; (3) have strong negative effects on populations of native Atlantic fishes; and (4) locally reduce the diversity (number of species) of native fishes. The lionfish invasion has been recognized as one of the major conservation threats worldwide. The Bahamas support the highest abundances of invasive lionfish globally. This system thus provides an unprecedented opportunity to understand the direct and indirect effects of a major invader on a diverse community, as well as the underlying causative mechanisms. The PI will focus on five related questions: (1) How does long-term predation by lionfish alter the structure of native reef-fish communities? (2) How does lionfish predation destabilize native prey population dynamics, possibly causing local extinctions? (3) Is there a lionfish-herbivore-seaweed trophic cascade on invaded reefs? (4) How do lionfish modify cleaning mutualisms on invaded reefs? (5) Are lionfish reaching densities where natural population limits are evident?
attribute	NC_GLOBAL	projects_0_end_date	String	2016-07
attribute	NC_GLOBAL	projects_0_geolocation	String	Three Bahamian sites: 24.8318, -076.3299; 23.8562, -076.2250; 23.7727, -076.1071; Caribbean Netherlands: 12.1599, -068.2820
attribute	NC_GLOBAL	projects_0_name	String	Mechanisms and Consequences of Fish Biodiversity Loss on Atlantic Coral Reefs Caused by Invasive Pacific Lionfish
attribute	NC_GLOBAL	projects_0_project_nid	String	561017
attribute	NC_GLOBAL	projects_0_project_website	String	http://hixon.science.oregonstate.edu/content/highlight-lionfish-invasion
attribute	NC_GLOBAL	projects_0_start_date	String	2012-08
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	standard_name_vocabulary	String	CF Standard Name Table v55
attribute	NC_GLOBAL	subsetVariables	String	year
attribute	NC_GLOBAL	summary	String	Effect of lionfish presence on native fish abundance in standardized habitat units in seagrass in Eleuthera, Bahamas during 2013 (Biodiversity Loss Effects Lionfish project)
attribute	NC_GLOBAL	title	String	[Effect of lionfish in standardized habitat units in seagrass] - Effect of lionfish presence on native fish abundance in standardized habitat units in seagrass in Eleuthera, Bahamas during 2013 (Biodiversity Loss Effects Lionfish project) (Mechanisms and Consequences of Fish Biodiversity Loss on Atlantic Coral Reefs Caused by Invasive Pacific Lionfish)
attribute	NC_GLOBAL	version	String	1
attribute	NC_GLOBAL	xml_source	String	osprey2erddap.update_xml() v1.3
variable	year		short
attribute	year	_FillValue	short	32767
attribute	year	actual_range	short	2013, 2013
attribute	year	bcodmo_name	String	year
attribute	year	description	String	Year of survey; YYYY
attribute	year	long_name	String	Year
attribute	year	nerc_identifier	String	https://vocab.nerc.ac.uk/collection/P01/current/YEARXXXX/
attribute	year	units	String	unitless
variable	survey_type		String
attribute	survey_type	bcodmo_name	String	sample_type
attribute	survey_type	description	String	Visual = species were surveyed visually (conducted in all weeks similar to all other habitat types); Shake = shells were brought back to the boat and shook to census cryptic/hidden species (conducted only in the final week fo the experiment)
attribute	survey_type	long_name	String	Survey Type
attribute	survey_type	units	String	unitless
variable	month		byte
attribute	month	_FillValue	byte	127
attribute	month	actual_range	byte	7, 8
attribute	month	bcodmo_name	String	month
attribute	month	description	String	Month of survey; mm
attribute	month	long_name	String	Month
attribute	month	nerc_identifier	String	https://vocab.nerc.ac.uk/collection/P01/current/MNTHXXXX/
attribute	month	units	String	unitless
variable	visit_number		byte
attribute	visit_number	_FillValue	byte	127
attribute	visit_number	actual_range	byte	2, 8
attribute	visit_number	bcodmo_name	String	numb_obs
attribute	visit_number	colorBarMaximum	double	100.0
attribute	visit_number	colorBarMinimum	double	0.0
attribute	visit_number	description	String	Visit number; one visit per reef per week
attribute	visit_number	long_name	String	Visit Number
attribute	visit_number	units	String	unitless
variable	day		byte
attribute	day	_FillValue	byte	127
attribute	day	actual_range	byte	1, 30
attribute	day	bcodmo_name	String	day
attribute	day	description	String	Day of survey; dd
attribute	day	long_name	String	Day
attribute	day	nerc_identifier	String	https://vocab.nerc.ac.uk/collection/P01/current/DAYXXXXX/
attribute	day	units	String	unitless
variable	treatment		String
attribute	treatment	bcodmo_name	String	treatment
attribute	treatment	description	String	Low = low lionfish treatment (lionfish removed from main reefs); High = high lionfish treatment (lionfish maintained on main reefs)
attribute	treatment	long_name	String	Treatment
attribute	treatment	units	String	unitless
variable	reef		String
attribute	reef	bcodmo_name	String	site
attribute	reef	description	String	Name of main reef
attribute	reef	long_name	String	Reef
attribute	reef	units	String	unitless
variable	time_start		String
attribute	time_start	bcodmo_name	String	time_start
attribute	time_start	description	String	Time that census began; HH:MM
attribute	time_start	long_name	String	Time Start
attribute	time_start	units	String	unitless
variable	time_end		String
attribute	time_end	bcodmo_name	String	time_end
attribute	time_end	description	String	Time that census ended; HH:MM
attribute	time_end	long_name	String	Time End
attribute	time_end	units	String	unitless
variable	shu_row		byte
attribute	shu_row	_FillValue	byte	127
attribute	shu_row	actual_range	byte	1, 2
attribute	shu_row	bcodmo_name	String	site
attribute	shu_row	description	String	Each row of Standardized Habitat Units (SHUs) around each main reef was assigned a unique number (1-2)
attribute	shu_row	long_name	String	Shu Row
attribute	shu_row	units	String	unitless
variable	distance		byte
attribute	distance	_FillValue	byte	127
attribute	distance	actual_range	byte	7, 30
attribute	distance	bcodmo_name	String	site_descrip
attribute	distance	description	String	Distance of Standardized Habitat Unit (SHU) to main reef
attribute	distance	long_name	String	Distance
attribute	distance	units	String	meters
variable	presence		String
attribute	presence	bcodmo_name	String	site_descrip
attribute	presence	description	String	Y = Yes at least one native fish was present on Standardized Habitat Unit (SHU); N = No native fishes were present on SHU.
attribute	presence	long_name	String	Presence
attribute	presence	units	String	unitless
variable	species		String
attribute	species	bcodmo_name	String	species
attribute	species	description	String	First 2 letters of genus and first 2 letters of species; see species key dataset for full species names.
attribute	species	long_name	String	Species
attribute	species	units	String	unitless
variable	length_max_1		byte
attribute	length_max_1	_FillValue	byte	127
attribute	length_max_1	actual_range	byte	0, 4
attribute	length_max_1	bcodmo_name	String	fish_len
attribute	length_max_1	description	String	Number of individuals that were between 0-1 cm total length
attribute	length_max_1	long_name	String	Length Max 1
attribute	length_max_1	units	String	count
variable	length_max_2		byte
attribute	length_max_2	_FillValue	byte	127
attribute	length_max_2	actual_range	byte	0, 6
attribute	length_max_2	bcodmo_name	String	fish_len
attribute	length_max_2	description	String	Number of individuals that were between 1.1-2 cm total length
attribute	length_max_2	long_name	String	Length Max 2
attribute	length_max_2	units	String	count
variable	length_max_3		byte
attribute	length_max_3	_FillValue	byte	127
attribute	length_max_3	actual_range	byte	0, 6
attribute	length_max_3	bcodmo_name	String	fish_len
attribute	length_max_3	description	String	Number of individuals that were between 2.1-3 cm total length
attribute	length_max_3	long_name	String	Length Max 3
attribute	length_max_3	units	String	count
variable	length_max_4		byte
attribute	length_max_4	_FillValue	byte	127
attribute	length_max_4	actual_range	byte	0, 10
attribute	length_max_4	bcodmo_name	String	fish_len
attribute	length_max_4	description	String	Number of individuals that were between 3.1-4 cm total length
attribute	length_max_4	long_name	String	Length Max 4
attribute	length_max_4	units	String	count
variable	length_max_5		byte
attribute	length_max_5	_FillValue	byte	127
attribute	length_max_5	actual_range	byte	0, 10
attribute	length_max_5	bcodmo_name	String	fish_len
attribute	length_max_5	description	String	Number of individuals that were between 4.1-5 cm total length
attribute	length_max_5	long_name	String	Length Max 5
attribute	length_max_5	units	String	count
variable	length_max_6		byte
attribute	length_max_6	_FillValue	byte	127
attribute	length_max_6	actual_range	byte	0, 18
attribute	length_max_6	bcodmo_name	String	fish_len
attribute	length_max_6	description	String	Number of individuals that were between 5.1-6 cm total length
attribute	length_max_6	long_name	String	Length Max 6
attribute	length_max_6	units	String	count
variable	length_max_7		byte
attribute	length_max_7	_FillValue	byte	127
attribute	length_max_7	actual_range	byte	0, 17
attribute	length_max_7	bcodmo_name	String	fish_len
attribute	length_max_7	description	String	Number of individuals that were between 6.1-7 cm total length
attribute	length_max_7	long_name	String	Length Max 7
attribute	length_max_7	units	String	count
variable	length_max_8		byte
attribute	length_max_8	_FillValue	byte	127
attribute	length_max_8	actual_range	byte	0, 5
attribute	length_max_8	bcodmo_name	String	fish_len
attribute	length_max_8	description	String	Number of individuals that were between 7.1-8 cm total length
attribute	length_max_8	long_name	String	Length Max 8
attribute	length_max_8	units	String	count
variable	length_max_9		byte
attribute	length_max_9	_FillValue	byte	127
attribute	length_max_9	actual_range	byte	0, 5
attribute	length_max_9	bcodmo_name	String	fish_len
attribute	length_max_9	description	String	Number of individuals that were between 8.1-9 cm total length
attribute	length_max_9	long_name	String	Length Max 9
attribute	length_max_9	units	String	count
variable	length_max_10		byte
attribute	length_max_10	_FillValue	byte	127
attribute	length_max_10	actual_range	byte	0, 4
attribute	length_max_10	bcodmo_name	String	fish_len
attribute	length_max_10	description	String	Number of individuals that were between 9.1-10 cm total length
attribute	length_max_10	long_name	String	Length Max 10
attribute	length_max_10	units	String	count
variable	length_max_15		byte
attribute	length_max_15	_FillValue	byte	127
attribute	length_max_15	actual_range	byte	0, 10
attribute	length_max_15	bcodmo_name	String	fish_len
attribute	length_max_15	description	String	Number of individuals that were between 10.1-15 cm total length
attribute	length_max_15	long_name	String	Length Max 15
attribute	length_max_15	units	String	count
variable	notes		String
attribute	notes	bcodmo_name	String	comment
attribute	notes	description	String	Notes on site observations
attribute	notes	long_name	String	Notes
attribute	notes	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.