NEFSC 1995  AJ9501 (Part II)

Debi Palka

doi:10.15468/zn487r

NEFSC 1995 AJ9501 (Part II)

Citation

Palka, D. 2013. NEFSC 1995 AJ9501 (Part II). Data downloaded from OBIS-SEAMAP (http://seamap.env.duke.edu/dataset/290) on yyyy-mm-dd. https://doi.org/10.15468/zn487r accessed via GBIF.org on 2025-06-13.

Description

Original provider: NOAA Northeast Fisheries Science Center (NEFSC) Dataset credits: NOAA Northeast Fisheries Science Center (NEFSC) Abstract: The ship survey was conducted from 06 August 1995 to 05 September 1995, beginning and ending in Woods Hole, MA. The study area covered approximately 12,600 nmi2 , and included the area bounded by Portland, ME to St. John, New Brunswick, to the southern tip of Nova Scotia. This cruise was part of a large scale marine mammal sighting survey which consisted of two legs (each approximately a month long) on each of two ships, and a six week aerial survey which was conducted concurrently with vessel operations. The entire study area was from Chesapeake Bay, VA, USA to the Gulf of St. Lawrence, Canada. Purpose: The objectives of this survey were to: 1) Estimate the abundance of harbor porpoises in the Gulf of Maine - Bay of Fundy - Scotian shelf area using two different field collection and analysis methods. 2) Determine the spatial distribution and estimate the abundance of other cetaceans found in the above area. 3) Conduct a comparison between sighting rates and spatial distribution of harbor porpoises as seen by two different types of sighting platforms, a ship (the R/V ABEL-J) and an aircraft. 4) Determine spatial distribution patterns of harbor porpoises, and investigate if the patterns are correlated with hydrographic or biological features, such as, water depth, temperature or salinity. 5) Determine if harbor porpoises avoid this ship, and if so, at what distance. 6) Compare the abundance estimate and spatial distribution of harbor porpoises as seen this year with that seen in previous years. 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. Part I was conducted during July 9 - August 2, 1995.

Purpose

The objectives of this survey were to: 1) Estimate the abundance of harbor porpoises in the Gulf of Maine - Bay of Fundy - Scotian shelf area using two different field collection and analysis methods. 2) Determine the spatial distribution and estimate the abundance of other cetaceans found in the above area. 3) Conduct a comparison between sighting rates and spatial distribution of harbor porpoises as seen by two different types of sighting platforms, a ship (the R/V ABEL-J) and an aircraft. 4) Determine spatial distribution patterns of harbor porpoises, and investigate if the patterns are correlated with hydrographic or biological features, such as, water depth, temperature or salinity. 5) Determine if harbor porpoises avoid this ship, and if so, at what distance. 6) Compare the abundance estimate and spatial distribution of harbor porpoises as seen this year with that seen in previous years.

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
Pseudorca crassidens
common name: False Killer Whale rank: species
Balaenoptera
common name: baleen whales rank: genus
Balaenoptera physalus
common name: Fin Whale 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
Balaenoptera acutorostrata
common name: Minke Whale rank: species
Eubalaena glacialis
common name: North Atlantic Right Whale rank: species
Globicephala
common name: pilot whales rank: genus
Mysticeti
common name: baleen whales rank: suborder
Odontoceti
common name: toothed whales rank: suborder
Phocidae
common name: earless seals rank: family
Cetacea
common name: cetaceans rank: order

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