NEFSC 1995 AJ9501 (Part I)

Debi Palka

doi:10.15468/8b292v

NEFSC 1995 AJ9501 (Part I)

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 2024-12-14.

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

NA

Additional info

marine, harvested by iOBIS

Taxonomic Coverages

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

Ziphius cavirostris
common name: Cuvier's Beaked Whale rank: species
Mesoplodon bidens
common name: Sowerby's Beaked Whale rank: species
Hyperoodontidae
rank: family
Cetacea
common name: cetaceans rank: order
Grampus griseus
common name: Risso's Dolphin rank: species
Kogia
common name: pygmy sperm whales rank: genus
Feresa attenuata
common name: Pygmy Killer Whale rank: species
Globicephala
common name: pilot whales rank: genus
Physeter macrocephalus
common name: Sperm Whale rank: species
Stenella
common name: spinner dolphins rank: genus
Stenella coeruleoalba
common name: Striped Dolphin rank: species
Cetacea
common name: cetaceans rank: order
Delphinidae
common name: dolphins rank: family
Cetacea
common name: cetaceans rank: order
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