Baltic Porpoise Acoustic Surveys 01-02
International Fund for Animal Welfare

International Fund for Animal Welfare

Boat-based acoustic and visual surveys for harbor porpoises (Phocoena phocoena) were conducted during the summers of 2001 and 2002 in order to investigate their distribution and relative abundance in the Baltic Sea, and to compare the results with the adjacent Kiel and Mecklenburg Bights and the Little Belt.

Harbor porpoises are subject to year-round bycatch in gillnets and other fishing gear in these waters. This is of particular concern in the Baltic Sea where a survey carried out in 1995 indicated that the population is low and current levels of anthropogenic mortality are believed to be unsustainable.

6/15/2010: The primary contact was changed from Douglas Gillespie to Anna Moscrop upon provider request.

Acoustic sound files are not available in OBIS-SEAMAP. This dataset includes acoustic events only.
Data for visual sightings during the survey are available in Baltic Porpoise Sightings 01-02.

Gillespie, D., P. Berggren, S. Brown, I. Kuklik, C. Lacey, T. Lewis, J. Matthews, R. Mclanaghan, A. Moscrop and N. Tregenza. 2005. Relative abundance of harbour porpoises (Phocoena phocoena). Journal of Cetacean Research and Managment. 7(1):51-57

Overview

Attributes described below represent those in the original dataset provided by the provider.
Only minimum required attributes are visible and downlodable online. Other attributes may be obtained upon provider's permission unless otherwise noteded below.

Attributes in dataset provided

Attribute (table column)	Description
dataset
lineno
index
datetime
latitude	Latitude of observation
longitude	Longitude of observation
gpsindex
gpstime
filename
duration
species	Species code
tsn	ITIS taxonomic serial number for the species
scientific	Species scientific name
nclicks
block
heading
headingtyp
speed
speedtype
gpserror
datastatus
acoustic
aframeobs
mastobs
seastate
excluded
oid	Unique ID number (generated by SEAMAP)