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NEFSC 1995 AJ9501 (Part II)

Dataset homepage

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

  1. NA

Additional info

marine, harvested by iOBIS

Taxonomic Coverages

Scientific names are based on the Integrated Taxonomic Information System (ITIS).
  1. Lagenorhynchus acutus
    common name: Atlantic White-sided Dolphin rank: species
  2. Balaenoptera
    common name: baleen whales rank: genus
  3. Cetorhinus maximus
    common name: basking shark rank: species
  4. Delphinidae
    common name: dolphins rank: family
  5. Pseudorca crassidens
    common name: False Killer Whale rank: species
  6. Balaenoptera
    common name: baleen whales rank: genus
  7. Balaenoptera physalus
    common name: Fin Whale rank: species
  8. Phocoena phocoena
    common name: Harbor Porpoise rank: species
  9. Phoca vitulina
    common name: Harbor Seal rank: species
  10. Megaptera novaeangliae
    common name: Humpback Whale rank: species
  11. Cetacea
    common name: cetaceans rank: order
  12. Balaenoptera acutorostrata
    common name: Minke Whale rank: species
  13. Eubalaena glacialis
    common name: North Atlantic Right Whale rank: species
  14. Globicephala
    common name: pilot whales rank: genus
  15. Mysticeti
    common name: baleen whales rank: suborder
  16. Odontoceti
    common name: toothed whales rank: suborder
  17. Phocidae
    common name: earless seals rank: family
  18. 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
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