Underwater fish visual census in the Azores from 1997 to 2015

Diana Catarino, University of the Azores Department of Oceanography and Fisheries (UAC-DOP);Mara Schmiing, University of the Azores Department of Oceanography and Fisheries (UAC-DOP)

Dataset credit

OBIS and EurOBIS

Contacts

RoleNameOrganization 
Primary contact Diana Catarino University of the Azores Department of Oceanography and Fisheries (UAC-DOP)
Primary contact Mara Schmiing University of the Azores Department of Oceanography and Fisheries (UAC-DOP)
Secondary contact Pedro Afonso University of the Azores Department of Oceanography and Fisheries (UAC-DOP)
Secondary contact Institute of Marine Research (IMAR) N/A
Secondary contact University of the Azores Department of Oceanography and Fisheries (UAC-DOP) N/A

Citation

Afonso P; Institute of Marine Research (IMAR - Azores), Portugal; Department of Oceanography and Fisheries (DOP) - UAc, Portugal (2016): Underwater fish visual census in the Azores from 1997 to 2015. https://doi.org/10.14284/210
Catarino, D and M. Schmiing. 2020. Underwater fish visual census in the Azores from 1997 to 2015. Data downloaded from OBIS-SEAMAP (http://seamap.env.duke.edu/dataset/103152573) on yyyy-mm-dd and originated from OBIS (https://obis.org/dataset/df1970cb-fd9a-440a-9547-7ee6ec2605bc)

Abstract

Fish assemblages surveyed by using underwater visual censuses (UVC) down to 40 m. Transects were performed between 1997 and 2015 in the Azores, Portugal. All mobile fish were identified to the lowest possible taxon. Dates, geographic coordinates and species recorded are provided.
Fish assemblages were surveyed using underwater visual censuses (UVC) down to 40 m. Following standard belt transect surveys (Brock 1954), SCUBA divers sampled transects with 50 m length and 5 m width. All mobile fish were identified to the lowest possible taxon and counted. Sampling sites were chosen based on the general representativeness of the habitat. Transects within sites were selected by stratified random sampling: different transects were done in each dive without replicating the depth strata (every 10 m) or overall bottom type or crossing transects during a single dive or day.

UVCs were conducted in the scope of projects CLIPE (FCT—Praxis XXI/3/3.2/EMG/1957/95), MARÉ (LIFE B4-3200/98-509), MAREFISH (FCT-POCTI/ BSE/41207/2001), OGAMP (INTERREG IIIb/MAC/4.2/A2 2001), MARMAC (INTERREGIIIb-03/MAC/4.2/A1 2004), EmpaFish (EC-FP6, SSP8-006539), MareFish (FCT, POCTI/BSE/41207/2001), MoniZEC (FRC - M2.1.2/I/018/2011)

Purpose

N/A

Supplemental information

This dataset was downloaded from OBIS (https://obis.org/). The records for only marine mammals, seabirds, sea turtles and rays and sharks were extracted. Records with no longitude/latitude or no date (eventDate) were excluded.
OBIS dataset page:
https://obis.org/dataset/df1970cb-fd9a-440a-9547-7ee6ec2605bc
Data Provider's dataset page:
http://ipt.vliz.be/eurobis/resource?r=scuba_diving_visual_census

References

Afonso P; Institute of Marine Research (IMAR - Azores), Portugal; Department of Oceanography and Fisheries (DOP) - UAc, Portugal (2016): Underwater fish visual census in the Azores from 1997 to 2015. https://doi.org/10.14284/210

Attributes

Overview

This section explains attributes included in the original dataset. OBIS-SEAMAP restricts the attributes available to the public to date/time, lat/lon and species names/counts only. Should you need other attributes described here, you are encouraged to contact the data provider.

Attributes described below represent those in the original dataset provided by the provider.
All attributes are included in the downloadable file (CSV or ESRI File Geodatabase) for "Complete Set of Dataset".

Attributes in dataset

Attribute (table column)Description
oidInternal ID
idRecord ID
dataset_idDataset ID
scientificnameScientific name
vernacularnameVernacular name
aphiaidAphia ID
taxonranktaxononic rank
individualcountGroup size / individual count
eventdateEvent date (precision varies)
eventtimeEvent time
decimallatitudeLatitude in decimal degrees
decimallongitudeLongitude in decimal degrees
coordinateprecisionCoordinate precision
catalognumberCatalog number
collectioncodeCollection code
occurrencestatusOccurrence status
basisofrecordBasis of record (HumanObservation / MachineObservation)
modifiedDate/time the record was modified
node_idNode ID
occurrenceidOccurrence ID
occurrenceremarksOccurrence remarks
eventidEvent ID
institutioncodeInstitution code
lifestageLife stage
sexGender of the animal if known
speciesSpecies by provider
datasetidDataset ID by provider
countryCountry
localityLocation of ocean
waterbodyDetails of ocean
droppedFlag indicating the record was dropped (always false)
absenceFlag indicating the record represents the absence of the species (always false)
marineFlag indicating the record is for marine life (always true)
OBIS-SEAMAP ID103152573
Seabirds0
Marine mammals0
Sea turtles0
Rays and sharks5
Other species0
Non spatial0
Non species0
Total5
Date, Begin1997-12-02
Date, End2015-11-12
Temporal prec.111000
Latitude38.51 - 38.54
Longitude-28.63 - -28.56
Coord. prec.6 decimal digits
PlatformVarious
Data typeAnimal sighting
EffortN/A
Traveled (km)0
0
Contr. throughiOBIS
Registered2020-06-30
Updated2021-02-05
StatusPublished
Sharing policy CC-BY (All)
Also available in None
See metadata in static HTML
See metadata in FGDC XML
See download history / statistics