IMR_STS_NS_AC_SSHer_index

Norwegian Sea NOR Norwegian spring-spawning herring acoustic abundance index in Feb-Mar

Dataset Creator	Dataset Title	Dataset Release Date	Dataset Release Place	Dataset Publisher	Dataset DOI	Online Resource
Are Salthaug, Erling Kåre Stenevik	Norwegian Sea NOR Norwegian spring-spawning herring acoustic abundance index in Feb-Mar	2022-03-15T00:00:00:00Z	Bergen, Norway	Institute of Marine Research	10.21335/NMDC-373752753	http://metadata.nmdc.no/metadata-api/landingpage/0712b5115bda42a140557a72fb30ff95

Role	First Name	Last Name	Email
DIF Author	Øyvind	Angelskår	oeyvind.angelskaar@hi.no
Investigator	Are	Salthaug	are.salthaug@hi.no
Technical Contact	Erling Kåre	Stenevik	erling.stenevik@hi.no

Category	Topic	Term	Variable Level 1	Variable Level 2	Variable Level 3
EARTH SCIENCE	BIOLOGICAL CLASSIFICATION	ANIMALS/VERTEBRATES	FISH	RAY-FINNED FISHES	ANCHOVIES/HERRINGS

Oceans

Norwegian spring-spawning herring

Start Date	Stop Date
2022-01-01	2022-12-31

Complete

CC BY 4.0

Institute of Marine Research

Data Center Name	Data Center URL	Personnel
NO/NMDC/IMR Institute of Marine Research, Norwegian Marine Data Centre, Norway	http://www.imr.no/forskning/faggrupper/norsk_marint_datasenter_nmd/en	Datacenter Øyvind Angelskår oeyvind.angelskaar@hi.no
Institute of Marine Research Institute of Marine Research	http://www.hi.no	Originating institution Are Salthaug

Distribution Media	Distribution Format
ftp	Zip-file

Acoustic surveys on the spawning grounds of Norwegian spring-spawning herring (NSS) have been carried out from 1988 onwards, with some breaks e.g. in 2001–2004 and 2009–2014. The majority of NSS herring spawns on-banks along the Norwegian coast from Møre (≈62° N) to Vesterålen (≈69° N) in mid-February to mid-March. However, the timing and location of spawning within this area and period have varied between years, e.g. there seems to be a trend towards earlier spawning in more recent years. Numbers at age have been re-estimated with stox for years where it was possible to get data, and these estimates are used as input to the ICES stock assessment of NSS herring.

URL Content Type	URL	Description
VIEW RELATED INFORMATION	https://www.hi.no/en/hi/forskning/projects/stox	StoX - An open source approach to acoustic and swept area survey calculations
PART	http://metadata.nmdc.no/metadata-api/landingpage/6309a14e00c7cecff4094d1d18e4eb3b	2018
PART	http://metadata.nmdc.no/metadata-api/landingpage/2870f9f21da64f3a01641dfe12512b33	2022

Norwegian Marine Datacentre

CEOS IDN DIF

9.7.1

2022-03-15T00:00:00:00Z

CC BY 4.0

POLYGON((19.9 57.9,2.1 57.9,2.1 72.1,19.9 72.1,19.9 57.9))