Cetacean sightings in the Black Sea, Sea of Azov and Kerch Strait

OBIS and EurOBIS

Over 645 sightings of cetacean groups (of one and more individuals) have been recorded in the Black Sea, Azov Sea and Kerch Strait during the period from 1993 to 2010 inclusive.
Most the data were obtained by means of special cetacean line transect aerial and vessel-based surveys conducted by trained observers. Some data were colllected during cetacean photo-identification studies. The dataset is accompanied with the estimated values of cetacean density and abundance.
For the most recent 5 years of data collection, only presence data are made available, for data older than 5 years, abundance data is made available.

N/A

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/db99b405-1b51-432b-86b6-cc77465d08c5
Data Provider's dataset page:
http://ipt.vliz.be/eurobis/resource?r=birkun_cetacea_sighting

Overview

The attributes of this dataset are compatible with the OBIS Schema, then reformatted to the OBIS-SEAMAP schema. If you would like to get the data in the OBIS Schema, please visit iOBIS Portal.

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
oid	Internal ID
id	Record ID
dataset_id	Dataset ID
scientificname	Scientific name
vernacularname	Vernacular name
aphiaid	Aphia ID
taxonrank	taxononic rank
individualcount	Group size / individual count
eventdate	Event date (precision varies)
eventtime	Event time
decimallatitude	Latitude in decimal degrees
decimallongitude	Longitude in decimal degrees
coordinateprecision	Coordinate precision
catalognumber	Catalog number
collectioncode	Collection code
occurrencestatus	Occurrence status
basisofrecord	Basis of record (HumanObservation / MachineObservation)
modified	Date/time the record was modified
node_id	Node ID
occurrenceid	Occurrence ID
occurrenceremarks	Occurrence remarks
eventid	Event ID
institutioncode	Institution code
lifestage	Life stage
sex	Gender of the animal if known
species	Species by provider
datasetid	Dataset ID by provider
country	Country
locality	Location of ocean
waterbody	Details of ocean
dropped	Flag indicating the record was dropped (always false)
absence	Flag indicating the record represents the absence of the species (always false)
marine	Flag indicating the record is for marine life (always true)