Royal Netherlands Institute for Sea Research (NIOZ) - Kom Fyke Mokbaai

OBIS and EurOBIS

The Royal Netherlands Institute for Sea Research (NIOZ) started kom fishing near Texel in the Netherlands in 1959. The main benefits were the insight in the occurrence and the abundance of the various species, the collection of undamaged live fish for experiments at both the Zoological Station and the various universities and the provision of food for the experiments with seals at the Texels Museum (nowadays Ecomare).
From 1960 onwards, kom fyke fishing has been continued without any changes in methodology. During the period 1960 – 1974 fishing occurred with different types of nets at various locations. From 1974 onwards fishing was restricted to one kom-fyke in the Mokbaai during the period March-October. From the start, all individuals were identified and counted and from 1971 onwards, in addition all individuals were measured once every two weeks and from the mid 70-ties all individuals caught were counted and measured on a daily basis.

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/5da207d6-fc1e-4e02-a2e8-bdfda1a97585
Data Provider's dataset page:
http://ipt.vliz.be/eurobis/resource?r=kom-fyke-mokbaai

The dataset has been updated over time as outlined below. Each entry includes the version number, release date, type of change, and a short description.

Overview

Attributes are defined by OBIS.

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	Sex 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)
obs_datetime
tprecision
on_land
date_in_future