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NEFSC 1995 AJ9501 (Part I)

Dataset homepage

Citation

Palka, D. 2011. NEFSC 1995 AJ9501 (Part I). Data downloaded from OBIS-SEAMAP (http://seamap.env.duke.edu/dataset/56) on yyyy-mm-dd. https://doi.org/10.15468/8b292v accessed via GBIF.org on 2022-05-16.

Description

Original provider: NOAA Northeast Fisheries Science Center (NEFSC) Dataset credits: National Marine Fisheries Service Abstract: The ship survey was performed from 22 July 1991 to 30 August 1991 to estimate the abundance and spatial distribution of harbor porpoises. The study area, covering approximately 13,300 nm, was from Port Clyde, Maine to St. John, New Brunswick over to the Nova Scotian coast, up to Liverpool, Nova Scotia. Purpose: The primary objectives were:
1) Estimate the abundance of harbor porpoises in the Gulf of Maine - Bay of Fundy - Nova Scotia area; and
2) Investigate if there are any spatial distribution patterns of the harbor porpoises, and if those patterns are correlated with water depth or harbor porpoise group size.
The secondary objectives were:
1) Estimate the abundance and spatial distribution of other cetaceans;
2) Determine if harbor porpoise avoid this ship, and if so, at what distance;
3) Determine if there is a spatial distribution pattern of mother-calf pairs of harbor porpoise;
4) Compare the abundance estimate and spatial distribution of harbor porpoise as seen this year with that seen in previous years;
5) Investigate if inland bays can be surveyed using a rigidhull inflatable boat as the observation platform in a line transect survey; and
6) Determine if Buckland's sighting procedure (1991), which is a line transect survey using both a primary and marking team, is a feasible procedure to estimate the abundance of harbor porpoise in the Bay of Fundy area. 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

The primary objectives were:
1) Estimate the abundance of harbor porpoises in the Gulf of Maine - Bay of Fundy - Nova Scotia area; and
2) Investigate if there are any spatial distribution patterns of the harbor porpoises, and if those patterns are correlated with water depth or harbor porpoise group size.
The secondary objectives were:
1) Estimate the abundance and spatial distribution of other cetaceans;
2) Determine if harbor porpoise avoid this ship, and if so, at what distance;
3) Determine if there is a spatial distribution pattern of mother-calf pairs of harbor porpoise;
4) Compare the abundance estimate and spatial distribution of harbor porpoise as seen this year with that seen in previous years;
5) Investigate if inland bays can be surveyed using a rigidhull inflatable boat as the observation platform in a line transect survey; and
6) Determine if Buckland's sighting procedure (1991), which is a line transect survey using both a primary and marking team, is a feasible procedure to estimate the abundance of harbor porpoise in the Bay of Fundy area.

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. Ziphius cavirostris
    common name: Cuvier's Beaked Whale rank: species
  2. Mesoplodon bidens
    common name: Sowerby's Beaked Whale rank: species
  3. Hyperoodontidae
    rank: family
  4. Cetacea
    common name: cetaceans rank: order
  5. Grampus griseus
    common name: Risso's Dolphin rank: species
  6. Kogia
    common name: pygmy sperm whales rank: genus
  7. Feresa attenuata
    common name: Pygmy Killer Whale rank: species
  8. Globicephala
    common name: pilot whales rank: genus
  9. Physeter macrocephalus
    common name: Sperm Whale rank: species
  10. Stenella
    common name: spinner dolphins rank: genus
  11. Stenella coeruleoalba
    common name: Striped Dolphin rank: species
  12. Cetacea
    common name: cetaceans rank: order
  13. Delphinidae
    common name: dolphins rank: family
  14. Cetacea
    common name: cetaceans rank: order
  15. Cetacea
    common name: cetaceans rank: order

Geographic Coverages

Atlantic,Atlantic Ocean,East coast,USA,United States Of America,Maine,Canada,New Brunswick

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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