ERDDAP > info > bcodmo_dataset_700226

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	Fish species survey from the Bahamas from 2009-2012.		I   M	background			BCO-DMO	bcodmo_dataset_700226

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	Methods from Kindinger and Albins (2016) \"Consumptive and non-consumptive effects of an invasive marine predator on native\u00a0coral- reef\u00a0herbivores\"\u00a0doi:\u00a0[10.1007/s10530-016-1268-1](\\"https://link.springer.com/article/10.1007%2Fs10530-016-1268-1\\") Visual surveys of reef fishes were conducted by a pair of SCUBA divers throughout (seafloor to surface) two permanent square plots (10 9 10 m) and four permanent strip transects (2 9 25 m), for a total area of 400 m2 per reef (see Albins 2015 for detailed description). We positioned square plots to include areas of the reef with the highest apparent relief, and strip transects were placed randomly across the remaining hard substrate, with the intent of including all important high-relief habitat features. Divers conducted censuses of each sampling unit whereby each fish was identified to the species-level and total length (TL) was visually estimated to the nearest cm. Paired reefs (low- and high-lionfish-densities) were surveyed within 24 h by the same set of observers, and all reefs were surveyed by the author (M. Albins). Every 3\u20135 months thereafter, we resurveyed the fish community at all experimental reefs. We quantified CEs of invasive lionfish on native herbivorous fish populations throughout the 2-year experiment by comparing the change in density and biomass of small and large herbivorous fishes between lionfish-density treatments. Small fish were B 10 cm TL, which encompasses the majority of prey fish sizes reported in invasive lionfish gut-content studies for the size range of lionfish (2\u201335 cm TL) observed on our experimental reefs (Morris and Akins 2009 ; Mun\u02dcoz et al. 2011 ). Responses of fish [ 10 cm TL were consistent, regardless of whether individuals were binned into medium (11\u201320 cm TL) and large ([ 20 cm TL) size classes, so hereafter we refer to all fish[ 10 cm TL as large . To determine the relative response of different sub guilds of herbivorous fishes, we also calculated the change in small and large fish density and biomass by fish family: (1) parrotfishes (Labridae); (2) surgeonfishes (Acanthuridae); (3) angelfishes (Pomacanthidae); and (4) damselfishes (Pomacentridae). We used published length-weight conversions to calculate fish biomass; parameters of closely related species were used when conversions were not available (Online Resource 1). We calculated changes in fish density and biomass at every survey interval by subtracting the baseline value (prior to initial lionfish manipulation) for each sub-sample (plots and transects) from the corresponding value of each subsequent survey. To test for an effect of invasive lionfish through time on changes in density and/or biomass of each group of native fishes (described above), we fitted linear mixed effects models (LMMs) with lionfish density treatment and time as categorical fixed effects, and sub -sample nested within reef as random effects (Pinheiro and Bates 2000 ; Bolker et al. 2009 ; Zuur et al. 2009 ). Time was a categorical variable because we had no a priori reason to assume any linear relationships with response variables. Full models included weighted terms allowing variances to differ among reefs and AR1 covariance structures to account for temporal autocorrelation (Zuur et al. 2009 ). We fitted full and reduced models (with vs. without weighted terms and/or AR1 structures) using restricted maximum likelihood (REML) and compared full and reduced models using Akaike\u2019s Information Criterion (AIC) and likelihood ratio tests (LRTs, Online Resource 2). Visual examination of residuals of the best-fit models indicated that the assumptions of normality, homogeneity, and independence were all met. To assess the significance of fixed effects, we refit each model using maximum likelihood estimation (ML) and applied LRTs (Zuur et al. 2009 ). Fixed effects that were not significant were sequentially dropped from models. The resulting best-fit models in terms of variance structure, temporal correlation, and fixed effects were refit using REML in order to estimate the fixed-effects parameters and associated effect sizes. If LRTs indicated the lionfish 9 time interaction was significant, we made simultaneous inferences about the marginal effects of the lionfish treatment at each survey period, and adjusted the associated p values to maintain an approximately 5 % family-wise error rate (Hothorn et al. 2008 ). Regardless of whether the lionfish 9 time interaction was significant, we estimated expected values and standard error of the means (SEMs) for all response variables from low- and high-lionfish- density treatments during each survey period. We also fit LMMs to compare the baseline levels of each response variable between lionfish-density treatments using a similar procedure to the one outlined above, but with density and biomass of each group of small and large fishes (described above) as the response (rather than the change in these variables). Additionally, we fit LMMs to assess whether small (B 10 cm) and large ([ 10 cm) native mesopredators (Online Resource 1) that are potentially ecologically-similar to invasive lionfish differed between the reefs assigned to each lionfish density treatment at the baseline survey (mesopredator density and biomass) and at each subsequent survey period (change in mesopredator density and biomass).
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	Fish Survey M. Hixon and T. Kindinger Version 16 May 2017
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	2017-05-18T16:12:37Z
attribute	NC_GLOBAL	date_modified	String	2019-03-28T18:34:53Z
attribute	NC_GLOBAL	defaultDataQuery	String	&time<now
attribute	NC_GLOBAL	doi	String	10.1575/1912/bco-dmo.700226.1
attribute	NC_GLOBAL	infoUrl	String	https://www.bco-dmo.org/dataset/700226
attribute	NC_GLOBAL	institution	String	BCO-DMO
attribute	NC_GLOBAL	keywords	String	bco, bco-dmo, biological, chemical, data, dataset, dmo, erddap, family, management, oceanography, office, pair, preliminary, sample, sample_type, site, site_pair, site_treatment, size, size_1, size_100, size_15, size_150, size_2, size_20, size_200, size_25, size_250, size_3, size_30, size_35, size_4, size_40, size_45, size_5, size_50, size_6, species, subsample, subsample_ID, time, time2, treatment, type, year
attribute	NC_GLOBAL	license	String	https://www.bco-dmo.org/dataset/700226/license
attribute	NC_GLOBAL	metadata_source	String	https://www.bco-dmo.org/api/dataset/700226
attribute	NC_GLOBAL	param_mapping	String	{'700226': {}}
attribute	NC_GLOBAL	parameter_source	String	https://www.bco-dmo.org/mapserver/dataset/700226/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	Auburn University
attribute	NC_GLOBAL	people_1_person_name	String	Mark A Albins
attribute	NC_GLOBAL	people_1_person_nid	String	51666
attribute	NC_GLOBAL	people_1_role	String	Scientist
attribute	NC_GLOBAL	people_1_role_type	String	originator
attribute	NC_GLOBAL	people_2_affiliation	String	Oregon State University
attribute	NC_GLOBAL	people_2_affiliation_acronym	String	OSU
attribute	NC_GLOBAL	people_2_person_name	String	Tye L. Kindinger
attribute	NC_GLOBAL	people_2_person_nid	String	51707
attribute	NC_GLOBAL	people_2_role	String	Contact
attribute	NC_GLOBAL	people_2_role_type	String	related
attribute	NC_GLOBAL	people_3_affiliation	String	Woods Hole Oceanographic Institution
attribute	NC_GLOBAL	people_3_affiliation_acronym	String	WHOI BCO-DMO
attribute	NC_GLOBAL	people_3_person_name	String	Hannah Ake
attribute	NC_GLOBAL	people_3_person_nid	String	650173
attribute	NC_GLOBAL	people_3_role	String	BCO-DMO Data Manager
attribute	NC_GLOBAL	people_3_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	size_150,size_200,size_250
attribute	NC_GLOBAL	summary	String	Fish species survey from the Bahamas from 2009-2012.
attribute	NC_GLOBAL	title	String	Fish species survey from the Bahamas from 2009-2012.
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	2009, 2011
attribute	year	bcodmo_name	String	year
attribute	year	description	String	Year of observation
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	family		String
attribute	family	bcodmo_name	String	family
attribute	family	description	String	Family of fish
attribute	family	long_name	String	Family
attribute	family	units	String	unitless
variable	site		String
attribute	site	bcodmo_name	String	site
attribute	site	description	String	Name of study site (reef)
attribute	site	long_name	String	Site
attribute	site	units	String	unitless
variable	site_treatment		String
attribute	site_treatment	bcodmo_name	String	treatment
attribute	site_treatment	description	String	Lionfish treatment of site (reef): Low-lionfish-density reef or High-lionfish-density reef
attribute	site_treatment	long_name	String	Site Treatment
attribute	site_treatment	units	String	unitless
variable	time2		byte
attribute	time2	_FillValue	byte	127
attribute	time2	actual_range	byte	0, 7
attribute	time2	bcodmo_name	String	time_point
attribute	time2	description	String	Time step of observation (0 -7 where 0 = baseline)
attribute	time2	long_name	String	Time
attribute	time2	units	String	unitless
variable	site_pair		String
attribute	site_pair	bcodmo_name	String	site
attribute	site_pair	description	String	Site pairs
attribute	site_pair	long_name	String	Site Pair
attribute	site_pair	units	String	unitless
variable	sample_type		String
attribute	sample_type	bcodmo_name	String	sample_type
attribute	sample_type	description	String	Sampling method used: PLOT = square 10 x 10 m plots; STRIP = 2 x 25 m line transects
attribute	sample_type	long_name	String	Sample Type
attribute	sample_type	units	String	unitless
variable	subsample_ID		String
attribute	subsample_ID	bcodmo_name	String	sample
attribute	subsample_ID	description	String	ID of sampling area per study site
attribute	subsample_ID	long_name	String	Subsample ID
attribute	subsample_ID	nerc_identifier	String	https://vocab.nerc.ac.uk/collection/P02/current/ACYC/
attribute	subsample_ID	units	String	unitless
variable	species		String
attribute	species	bcodmo_name	String	species
attribute	species	description	String	Species of fish: species codes are first two letters of genus and species (see species key)
attribute	species	long_name	String	Species
attribute	species	units	String	unitless
variable	size_1		byte
attribute	size_1	_FillValue	byte	127
attribute	size_1	actual_range	byte	0, 4
attribute	size_1	bcodmo_name	String	fish_len
attribute	size_1	description	String	Number of individuals counted of each size (1 cm total body length)
attribute	size_1	long_name	String	Size 1
attribute	size_1	units	String	count
variable	size_2		byte
attribute	size_2	_FillValue	byte	127
attribute	size_2	actual_range	byte	0, 90
attribute	size_2	bcodmo_name	String	fish_len
attribute	size_2	description	String	Number of individuals counted of each size (2 cm total body length)
attribute	size_2	long_name	String	Size 2
attribute	size_2	units	String	count
variable	size_3		byte
attribute	size_3	_FillValue	byte	127
attribute	size_3	actual_range	byte	0, 84
attribute	size_3	bcodmo_name	String	fish_len
attribute	size_3	description	String	Number of individuals counted of each size (3 cm total body length)
attribute	size_3	long_name	String	Size 3
attribute	size_3	units	String	count
variable	size_4		byte
attribute	size_4	_FillValue	byte	127
attribute	size_4	actual_range	byte	0, 51
attribute	size_4	bcodmo_name	String	fish_len
attribute	size_4	description	String	Number of individuals counted of each size (4 cm total body length)
attribute	size_4	long_name	String	Size 4
attribute	size_4	units	String	count
variable	size_5		byte
attribute	size_5	_FillValue	byte	127
attribute	size_5	actual_range	byte	0, 44
attribute	size_5	bcodmo_name	String	fish_len
attribute	size_5	description	String	Number of individuals counted of each size (5 cm total body length)
attribute	size_5	long_name	String	Size 5
attribute	size_5	units	String	count
variable	size_6		byte
attribute	size_6	_FillValue	byte	127
attribute	size_6	actual_range	byte	0, 81
attribute	size_6	bcodmo_name	String	fish_len
attribute	size_6	description	String	Number of individuals counted of each size (6 cm total body length)
attribute	size_6	long_name	String	Size 6
attribute	size_6	units	String	count
variable	size_15		byte
attribute	size_15	_FillValue	byte	127
attribute	size_15	actual_range	byte	0, 75
attribute	size_15	bcodmo_name	String	fish_len
attribute	size_15	description	String	Number of individuals counted of each size (15 cm total body length)
attribute	size_15	long_name	String	Size 15
attribute	size_15	units	String	count
variable	size_20		byte
attribute	size_20	_FillValue	byte	127
attribute	size_20	actual_range	byte	0, 50
attribute	size_20	bcodmo_name	String	fish_len
attribute	size_20	description	String	Number of individuals counted of each size (20 cm total body length)
attribute	size_20	long_name	String	Size 20
attribute	size_20	units	String	count
variable	size_25		byte
attribute	size_25	_FillValue	byte	127
attribute	size_25	actual_range	byte	0, 20
attribute	size_25	bcodmo_name	String	fish_len
attribute	size_25	description	String	Number of individuals counted of each size (25 cm total body length)
attribute	size_25	long_name	String	Size 25
attribute	size_25	units	String	count
variable	size_30		byte
attribute	size_30	_FillValue	byte	127
attribute	size_30	actual_range	byte	0, 6
attribute	size_30	bcodmo_name	String	fish_len
attribute	size_30	description	String	Number of individuals counted of each size (30 cm total body length)
attribute	size_30	long_name	String	Size 30
attribute	size_30	units	String	count
variable	size_35		byte
attribute	size_35	_FillValue	byte	127
attribute	size_35	actual_range	byte	0, 4
attribute	size_35	bcodmo_name	String	fish_len
attribute	size_35	description	String	Number of individuals counted of each size (35 cm total body length)
attribute	size_35	long_name	String	Size 35
attribute	size_35	units	String	count
variable	size_40		byte
attribute	size_40	_FillValue	byte	127
attribute	size_40	actual_range	byte	0, 2
attribute	size_40	bcodmo_name	String	fish_len
attribute	size_40	description	String	Number of individuals counted of each size (40 cm total body length)
attribute	size_40	long_name	String	Size 40
attribute	size_40	units	String	count
variable	size_45		byte
attribute	size_45	_FillValue	byte	127
attribute	size_45	actual_range	byte	0, 2
attribute	size_45	bcodmo_name	String	fish_len
attribute	size_45	description	String	Number of individuals counted of each size (45 cm total body length)
attribute	size_45	long_name	String	Size 45
attribute	size_45	units	String	count
variable	size_50		byte
attribute	size_50	_FillValue	byte	127
attribute	size_50	actual_range	byte	0, 1
attribute	size_50	bcodmo_name	String	fish_len
attribute	size_50	description	String	Number of individuals counted of each size (50 cm total body length)
attribute	size_50	long_name	String	Size 50
attribute	size_50	units	String	count
variable	size_100		byte
attribute	size_100	_FillValue	byte	127
attribute	size_100	actual_range	byte	0, 1
attribute	size_100	bcodmo_name	String	fish_len
attribute	size_100	description	String	Number of individuals counted of each size (100 cm total body length)
attribute	size_100	long_name	String	Size 100
attribute	size_100	units	String	count
variable	size_150		byte
attribute	size_150	_FillValue	byte	127
attribute	size_150	actual_range	byte	0, 0
attribute	size_150	bcodmo_name	String	fish_len
attribute	size_150	description	String	Number of individuals counted of each size (150 cm total body length)
attribute	size_150	long_name	String	Size 150
attribute	size_150	units	String	count
variable	size_200		byte
attribute	size_200	_FillValue	byte	127
attribute	size_200	actual_range	byte	0, 0
attribute	size_200	bcodmo_name	String	fish_len
attribute	size_200	description	String	Number of individuals counted of each size (200 cm total body length)
attribute	size_200	long_name	String	Size 200
attribute	size_200	units	String	count
variable	size_250		byte
attribute	size_250	_FillValue	byte	127
attribute	size_250	actual_range	byte	0, 0
attribute	size_250	bcodmo_name	String	fish_len
attribute	size_250	description	String	Number of individuals counted of each size (250 cm total body length)
attribute	size_250	long_name	String	Size 250
attribute	size_250	units	String	count

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.