Trawl survey data from the Jabuka Pit area (central-eastern Adriatic Sea, Mediterranean) collected between 1956 and 1971

Tomaso Fortibuoni, National Institute of Oceanography and Experimental Geophysics (OGS)

Dataset credit

OBIS and EurOBIS

Contacts

RoleNameOrganization 
Primary contact Tomaso Fortibuoni National Institute of Oceanography and Experimental Geophysics (OGS)
Secondary contact Italian National Institute for Environmental Protection and Research Branch office Chioggia (ISPRA) N/A
Secondary contact National Institute of Oceanography and Experimental Geophysics (OGS) N/A

Citation

National Institute of Oceanography and Experimental Geophysics (OGS); Italian National Institute for Environmental Protection and Research (ISPRA), Italy; (2017): Trawl survey data from the Jabuka Pit area (central-eastern Adriatic Sea, Mediterranean) collected between 1956 and 1971. https://doi.org/10.14284/287
Fortibuoni, T. 2020. Trawl survey data from the Jabuka Pit area (central-eastern Adriatic Sea, Mediterranean) collected between 1956 and 1971. Data downloaded from OBIS-SEAMAP (http://seamap.env.duke.edu/dataset/103152523) on yyyy-mm-dd and originated from OBIS (https://obis.org/dataset/a6f8db9e-2794-4260-b7f6-66febc029002)

Abstract

Between October 1956 and January 1971, the Institute of Oceanography and Fisheries (IOF, Croatia) performed a series of trawl-surveys in the Croatian coastal waters between Split and Šibenik (central-eastern Adriatic, Mediterranean) in the area of the Jabuka Pit with two motorboats, “Bios” (300 HP; LOA = 26 m) and “Predvodnik” (200 HP; LOA = 19 m).
447 hauls were carried out at 26 fixed stations. Three different bottom otter-trawl nets were used. A cotton bottom otter-trawl net (wing mesh-size: 55 mm; cod-end mesh-size: 20 mm; foot-rope length: 36.3 m; head-rope length: 29.1 m) was towed by the motorboat “Bios”, while a cotton bottom otter-trawl net (wing mesh-size: 55 mm; cod-end mesh-size: 20 mm; foot-rope length: 46.1 m; head-rope length: 34.1 m) was towed by the motorboat “Predvodnik”. In 1971, a synthetic bottom otter-trawl net (wing mesh-size: 50 mm; cod-end mesh-size: 20 mm; foot-rope length: 40 m; head-rope length: 37 m) was towed by the motorboat “Bios”. Tow duration was one hour for all hauls. The average tow speed was 3 knots. CPUE (n/h and kg/h) indexes were derived for 129 demersal species (19,756 records). Species synonymies were updated according to the modern nomenclature referring to the World Register of Marine Species (WoRMS). Some species are grouped into multispecies categories that group taxonomically similar species, i.e. species of the same genus or family (e.g. Raja spp., Triglidae). Information on the sediment type at each station was also recorded using an echo sounder. The depth of each station was extracted from the EMODnet Digital Bathymetry.

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/a6f8db9e-2794-4260-b7f6-66febc029002
Data Provider's dataset page:
http://ipt.vliz.be/eurobis/resource?r=bios_predvodnik_2_trawl_survey_1956_1971

References

National Institute of Oceanography and Experimental Geophysics (OGS); Italian National Institute for Environmental Protection and Research (ISPRA), Italy; (2017): Trawl survey data from the Jabuka Pit area (central-eastern Adriatic Sea, Mediterranean) collected between 1956 and 1971. https://doi.org/10.14284/287

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 ID103152523
Seabirds0
Marine mammals0
Sea turtles0
Rays and sharks9
Other species0
Non spatial0
Non species0
Total9
Date, Begin1963-10-21
Date, End1964-09-18
Temporal prec.111000
Latitude43.51 - 43.51
Longitude16.37 - 16.37
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
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See metadata in FGDC XML
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