Trawl-survey data from the “expedition Hvar” in the Adriatic Sea (Mediterranean) collected in 1948-1949

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 “expedition Hvar” in the Adriatic Sea (Mediterranean) collected in 1948-1949. https://doi.org/10.14284/285
Fortibuoni, T. 2020. Trawl-survey data from the “expedition Hvar” in the Adriatic Sea (Mediterranean) collected in 1948-1949. Data downloaded from OBIS-SEAMAP (http://seamap.env.duke.edu/dataset/103152362) on yyyy-mm-dd and originated from OBIS (https://obis.org/dataset/143e83d6-a818-4ac4-9909-146009f0fd0d)

Abstract

The “expedition HVAR” (1948-1949), organised by the Institute of Oceanography and Fisheries of Split (IOF, Croatia), was the first large-scale fishery-independent trawl-survey ever performed in the Adriatic Sea. The survey was conducted with the motorboat “Hvar” (250 HP; LOA = 25 m) in the territorial waters of the former Yugoslavia (currently territorial waters of the Republics of Slovenia, Croatia, Bosnia and Herzegovina and Montenegro) and Albania, and in the international waters to approximately 20 nautical miles off the Italian coast.
The database includes CPUE (n/h and kg/h) indexes of 95 demersal species for 271 hauls at 151 fixed stations. Species synonymies were updated according 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 was also reported for each station. The depth of each station was extracted from the EMODnet Digital Bathymetry. Fish samples were taken with a cotton bottom otter-trawl net with wing mesh size of 55 mm, cod-end mesh size of 26 mm, foot-rope of 44 m and head-rope of 35 m. Trawling was carried out during daylight. The average tow speed was 3 knots. The purpose of the research was to determine the qualitative and quantitative characteristics of the demersal communities of fish, crustaceans and cephalopods and to assess the possibility of their exploitation. This survey was conducted in the period when the demersal fish and invertebrate communities were not intensely exploited (“post-war conditions”), and thus this data Jucan serve as a reference baseline for the following changes.

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/143e83d6-a818-4ac4-9909-146009f0fd0d
Data Provider's dataset page:
http://ipt.vliz.be/eurobis/resource?r=hvar_trawl_survey_1948_1949

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 “expedition Hvar” in the Adriatic Sea (Mediterranean) collected in 1948-1949. https://doi.org/10.14284/285
Fortibuoni, T. 2020. Trawl-survey data from the “expedition Hvar” in the Adriatic Sea (Mediterranean) collected in 1948-1949. Data downloaded from OBIS-SEAMAP (http://seamap.env.duke.edu/dataset/103152362) on yyyy-mm-dd and originated from OBIS (https://obis.org/dataset/143e83d6-a818-4ac4-9909-146009f0fd0d)

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 ID103152362
Seabirds0
Marine mammals0
Sea turtles0
Rays and sharks20
Other species0
Non spatial0
Non species0
Total20
Date, Begin1948-05-15
Date, End1949-03-27
Temporal prec.111000
Latitude40.13 - 43.63
Longitude14.75 - 19.53
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