Harbor Porpoise Survey 1992 (AJ92-01)

Debi Palka

doi:10.15468/qtr9dy

Harbor Porpoise Survey 1992 (AJ92-01)

Citation

Palka, D. 2013. Harbor Porpoise Survey 1992 (AJ92-01). Data downloaded from OBIS-SEAMAP (http://seamap.env.duke.edu/dataset/302) on yyyy-mm-dd. https://doi.org/10.15468/qtr9dy accessed via GBIF.org on 2024-12-13.

Description

Original provider: NOAA Northeast Fisheries Science Center (NEFSC) Dataset credits: NOAA Northeast Fisheries Science Center (NEFSC) Abstract: The ship survey was performed from 29 July 1992 to 06 September 1992, starting and ending in Woods Hole, MA. The study area, covering approximately 13,300 nmi2, was from Portland, ME to St. John, New Brunswick over to Port Joli, Nova Scotia on the southeast side of Nova Scotia. Purpose: PRIMARY OBJECTIVE Estimate the abundance of harbor porpoises in the Gulf of Maine - Bay of Fundy - Scotian shelf area. SECONDARY OBJECTIVES 1) Determine the spatial distribution patterns of harbor porpoises, and investigate if the patterns are correlated with hydrographic or biological features, such as, the depth, temperature or salinity of the water or with targets seen on an acoustic fish finder. 2) Estimate the abundance and spatial distribution of other cetaceans. 3) Determine if harbor porpoise avoid this ship, and if so, at what distance. 4) Use a 17 foot Zodiac rigid-hulled inflatable boat (RIB) and the R/V Abel-J to survey the Penobscot Bay - Blue Hill Bay area and other bays and harbors along the Maine and Nova Scotia coast. 5) Determine if there is a spatial distribution pattern of mother-calf pairs of harbor porpoise. 6) Compare the abundance estimate and spatial distribution of harbor porpoise as seen this year with that seen in previous years. 7) Determine dive time patterns of individual and groups of harbor porpoises around the sighting platform. 8) Investigate the utility of 2 new electronic data entry systems. 9) Determine the distribution of marine mammals between the northeastern edge of the study area and Halifax, Nova Scotia, on Brown' s Bank, and on the continental shelfbreak in the area south of Brown' s Bank. Supplemental information: In addition to the sighting data, effort data was recorded every half hour or whenever conditions change. This dataset, therefore, should be used with the effort data.

Purpose

PRIMARY OBJECTIVE Estimate the abundance of harbor porpoises in the Gulf of Maine - Bay of Fundy - Scotian shelf area. SECONDARY OBJECTIVES 1) Determine the spatial distribution patterns of harbor porpoises, and investigate if the patterns are correlated with hydrographic or biological features, such as, the depth, temperature or salinity of the water or with targets seen on an acoustic fish finder. 2) Estimate the abundance and spatial distribution of other cetaceans. 3) Determine if harbor porpoise avoid this ship, and if so, at what distance. 4) Use a 17 foot Zodiac rigid-hulled inflatable boat (RIB) and the R/V Abel-J to survey the Penobscot Bay - Blue Hill Bay area and other bays and harbors along the Maine and Nova Scotia coast. 5) Determine if there is a spatial distribution pattern of mother-calf pairs of harbor porpoise. 6) Compare the abundance estimate and spatial distribution of harbor porpoise as seen this year with that seen in previous years. 7) Determine dive time patterns of individual and groups of harbor porpoises around the sighting platform. 8) Investigate the utility of 2 new electronic data entry systems. 9) Determine the distribution of marine mammals between the northeastern edge of the study area and Halifax, Nova Scotia, on Brown' s Bank, and on the continental shelfbreak in the area south of Brown' s Bank.

Sampling Description

Study Extent

NA

Sampling

NA

Method steps

NA

Additional info

marine, harvested by iOBIS

Taxonomic Coverages

Scientific names are based on the Integrated Taxonomic Information System (ITIS).

Lagenorhynchus acutus
common name: Atlantic White-sided Dolphin rank: species
Balaenoptera
common name: baleen whales rank: genus
Cetorhinus maximus
common name: basking shark rank: species
Delphinidae
common name: dolphins rank: family
Balaenoptera
common name: baleen whales rank: genus
Balaenoptera physalus
common name: Fin Whale rank: species
Halichoerus grypus
common name: Atlantic gray seal rank: species
Phocoena phocoena
common name: Harbor Porpoise rank: species
Phoca vitulina
common name: Harbor Seal rank: species
Megaptera novaeangliae
common name: Humpback Whale rank: species
Cetacea
common name: cetaceans rank: order
Dermochelys coriacea
common name: Leatherback Sea Turtle rank: species
Balaenoptera acutorostrata
common name: Minke Whale rank: species
Eubalaena glacialis
common name: North Atlantic Right Whale rank: species
Mola mola
common name: ocean sunfish rank: species
Globicephala
common name: pilot whales rank: genus

Geographic Coverages

North Atlantic Ocean

Bibliographic Citations

Contacts

Debi Palka
originator
position: Primary contact
NOAA Northeast Fisheries Science Center
email: dpalka@whsun1.wh.whoi.edu

OBIS-SEAMAP
metadata author
Marine Geospatial Ecology Lab, Duke University
A328 LSRC building
Durham
27708
NC
US
email: seamap-contact@duke.edu
homepage: https://seamap.env.duke.edu

OBIS-SEAMAP
distributor
Marine Geospatial Ecology Lab, Duke University
A328 LSRC building
Durham
27708
NC
US
email: seamap-contact@duke.edu
homepage: https://seamap.env.duke.edu

Debi Palka
owner
position: Primary contact
NOAA Northeast Fisheries Science Center
email: dpalka@whsun1.wh.whoi.edu

Debi Palka
administrative point of contact
position: Primary contact
NOAA Northeast Fisheries Science Center
email: dpalka@whsun1.wh.whoi.edu