Dataset: Fish surveys 1999-2015
Deployment: Carr_1999

Fish surveys, 1999-2015

Principal Investigator:

Mark Carr (University of California-Santa Cruz, UCSC)

Co-Principal Investigator:

Christopher Edwards

Dr John Carlos Garza (University of California-Santa Cruz, UCSC)

BCO-DMO Data Manager:

Nancy Copley (Woods Hole Oceanographic Institution, WHOI BCO-DMO)

Project:

Integrative evaluation of larval dispersal and delivery in kelp rockfish using inter-generational genetic tagging, demography and oceanography (Larval Dispersal in Kelp Rockfish)

Data URL:

https://osprey.bco-dmo.org/dataset-deployment/684491/data

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Description

Methods & Sampling

Dataset acquisition description

Sampling consists of visual surveys of the number and size of all non-cryptic fishes by SCUBA divers. Surveys are conducted at sites distributed throughout the study region (Carmel Bay and southern Monterey Bay). Each sample site is divided into four "zones" (by depth - 20m, 15m, 10m, 5m - or from offshore to inshore at sites with little depth variation) to assure that samples are distributed across the face of a reef from inshore to offshore. Where possible, fish are counted on 12 transects per site (defined as a fixed stretch of coastline, occupying approximately 500m). Each "transect" includes a 2m x 2m x 30m "bottom" transect and a "mid-water" transect. Sampling is conducted by a pair of divers surveying the bottom and mid-water transects simultaneously. Surveys are designed to measure year-to-year site-wide variability in population structure and density. Density and size-structure estimates derived from these surveys are multiplied by habitat area measurements to estimate species abundance and, using published size-fecundity relationships, generate estimates of larval production.

Data Processing Description

Dataset Processing Description

Data are entered by hand and double checked for accuracy. Dataset is checked for valid entries and completeness.

BCO-DMO Processing Notes:
- added conventional header with dataset name, PI name, version date
- modified parameter names to conform with BCO-DMO naming conventions
- blank values replaced with no data value 'nd'
- added latitude and longitude data from dataset "Site Code Key"

More information about this dataset deployment

Funding

Award Number	Funding Source
OCE-1260693	NSF Division of Ocean Sciences

Instruments

None available yet

Parameters

Supplied Name	Supplied description	Supplied Units	Standard Name
year	The year that the survey was done in local time; YYYY format	year	year
month	The month that the survey was done in local time; M or MM format.	month as numeral	month
day	The day that the survey was done in local time; D or DD format	day of month	day
site	The unique site code where the survey was performed. (as defined in the site information table) This site code refers to a specific GPS location defined by a bounding box and is likely associated with a placename (i.e there may be multiple sitecodes at the 'Jalama Beach' placename).	unitless	site
side	A division of the site into two or three areas; referred to as sides. Sides may be East (E), West (W), South (S), North (N), or CEN (central)	unitless	site
zone	A division of the side into 2 or 4 categories representing onshore-offshore stratification or targeted bottom depths for transects. Zones may be INNER, INMID, OUTMID and OUTER.	unitless	site
level	Letter code for the relative depth of the sample (BOT, MID, CAN)	unitless	site_descrip
transect	A number representing one of the parallel transects through the site area along which are located the sampling segments.	transect	transect
classcode	The unique taxonomic or functional classification code that is being counted; as defined in the PISCO classification table. Refers to a Genus and species. See 'species codes' dataset for definitions.	unitless	taxon_code
count	The number of individuals of a given species of a given size; indicated by the class code.	individuals	count
fish_tl	The total length of an individual or group of individuals (of the same length) OR the average total length for a group of fish where a range in lengths is specified (rounded to the nearest cm)	cm	length
min_tl	The minimum size of the sampled class; used only when a range of sizes was recorded for a group of individuals of a species.	cm	length_min
max_tl	The maximum size of the sampled class; used only when a range of sizes was recorded for a group of individuals of a species.	cm	length_max
observer	The diver taking these samples.	unitless	person
depth	Average depth of the transect estimated by the diver. Each level is measured.	m	depth
vis	The diver estimation of horizontal visibility on each transect. Measured by reeling in the tape and noting the distance at which the end of the tape can first be seen.	m	visibility
surge	diver estimation of magnitude of horizontal displacement on each transect; recorded at depth. (L)ow, (M)edium, (H)igh.	unitless	wave_height
lat_WGS84	latitude derived from WGS84 system; north is positive	decimal degrees	lat
lon_WGS84	longitude derived from WGS84 system; east is positive	decimal degrees	lon

Database

Contribute Data

Dataset: Fish surveys 1999-2015
Deployment: Carr_1999

Dataset acquisition description

Dataset Processing Description

Database

Contribute Data

Dataset: Fish surveys 1999-2015Deployment: Carr_1999

Dataset acquisition description

Dataset Processing Description

Dataset: Fish surveys 1999-2015
Deployment: Carr_1999