EAISSNA - An Electronic Atlas of Ichthyoplankton on the Scotian Shelf of North AmericaEntry ID: Canada_DFO_AtlasIchthyoplankton
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Abstract: The EAISSNA database contains information on location and time of spawning, and
abundance and distribution of eggs and larvae of marine fish on the Scotian
Shelf of North America. 197 scientific publications from 1919 to 2001 were
reviewed and original analysis conducted on datasets from Department of
Fisheries and Oceans (DFO) Scotian Shelf Ichthyoplankton Program (SSIP) and
Fisheries Ecology ... Program (FEP) for 1976-82 from data archives, providing
information on 107 taxa of fish and invertebrates. The database is intended for
use in environmental assessment and management activities associated with
offshore hydrocarbon development and production and ocean management.
Supporting maps and database tables, and possible enhancements and developments
including standards based World Wide Web (WWW) access are also described.
Compact Disks (CD) (report, lists, maps and data) can be obtained from the
authors.The database provides georeferenced information on distribution and
seasonality of fish eggs and larvae, an important component of the ecosystem of
the Canadian continental shelf. It is used by environmental managers, the oil
industry and fisheries researchers.
The database resides on the Fisheries and Oceans Canada Maritime Science
Virtual Data Centre (VDC), which supports access and searches, as well as
manipulation and visualization.
The database includes new summary analyses of geospatial data from the Scotian
Shelf Ichthyoplankton Program (SSIP) and Fisheries Ecology Program (FEP) and
displays the information as electronic images (Microsoft portable network
graphics format(PNGs) as well as vector representations (MapInfo Professional,
MID/MIF transfer format).
Spatial Data Organization Information -
Indirect Spatial Reference: A table containing digitized seabed features
allows searches for georeferences to locate polygons and identify features,
allowing records to be located by searches of feature names.
Direct Spatial Reference: Point data is referenced by latitude and
longitude fields. Rasters (scans) of maps are accessed by searches for
georeferences which are in boundaries of maximum and minimum latitude and
longitude for the rasters. Vector data (polygons) are stored in MID/MIF
interchange format which can be searched to locate polygons in which a sought
after georeference occurs. Maximum and minimum extent of vector data (polygons)
are stored, allowing searches for georeferences in the proximity of the
Data Set Citation
Dataset Originator/Creator: Government of Canada, Fisheries and Oceans Canada, Marine Fish Division
Dataset Title: EAISSNA - An Electronic Atlas of Ichthyoplankton on the Scotian Shelf of North America
Dataset Release Date: 2001
Dataset Release Place: Dartmouth, Nova Scotia, Canada
Dataset Publisher: Government of Canada, Fisheries and Oceans CanadaOnline Resource: http://www.marinebiodiversity.ca/en/eaissna/eaissna.html
Start Date: 1954-01-01Stop Date: 2003-12-31
Quality Information is present as data (e.g. numbers, dates); descriptions (e.g. time
or season of spawning); scans of maps or graphics contained in scientific
publications; polygons from scanned maps digitized in MapInfo GIS and stored in
native format or in map interchange (MID/MIF) format; polygons generated in
ACON Software from fish egg and larvae data from the Fisheries Ecology and
Scotian Shelf Ichthyoplankton Programs and produced in MapInfo GIS native
format or in map interchange (MID/MIF) format.
Access Constraints Basic MSAccess database distributed as CD; accessible in Oracle on Fisheries
and Oceans Canada (DFO) Marine Fish Division Virtual Data Centre on DFO
Intranet, with permission.
Use Constraints These include any use constraints applied to assure the protection of privacy
or intellectual property, and any special restrictions or limitations on using
the data set.
Data Set Progress
Role: DIF AUTHOR
Role: TECHNICAL CONTACT
Phone: (902) 426-3537
Fax: (902) 426-1506
Email: brantonb at mar.dfo-mpo.gc.ca
1 Challenger Drive
Province or State: Nova Scotia
Postal Code: B2Y 3V4
Creation and Review Dates
DIF Creation Date: 2004-06-09
Last DIF Revision Date: 2008-05-20
Future DIF Review Date: 2005-07-17