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Item Identification
Physical Location
Document Info
Support Roles
Extents
Distribution Info
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Summary

Description

In summer 2021, the Pacific Islands Fisheries Science Center conducted a comprehensive line-transect survey for cetaceans and seabirds within the U.S. of the Guam and the Commonwealth of the Northern Mariana Islands exclusive economic zones. The Mariana Archipelago Cetacean Survey (MACS) 2021 project was part of the multi-year Pacific Marine Assessment Program for Protected Species (PacMAPPS) plan to conduct surveys and estimate density for cetacean species in regions of joint NOAA Fisheries, Bureau of Ocean Energy Management, and U.S. Navy interest. MACS 2021 sailed for 59 days at sea aboard the NOAA Ship Oscar Elton Sette in May-July, 2021 and surveyed 8,711.7 km of trackline. The team conducted visual and passive acoustic surveys during daylight hours when weather permitted. There were 77 cetacean sightings of at least 12 species. The most frequently sighted species during the project were sperm whales (Physeter macrocephalus, 18 sightings), false killer whales (Pseudorca crassidens, 10 sightings), and pantropical spotted dolphins (Stenella attenuata, 8 sightings). Approximately 2,300 photos of 9 cetacean species were collected for individual or species identification during 20 cetacean sightings. Two biopsy samples were collected from false killer whales. During towed array surveys there were 245 acoustic detections of cetaceans, of which 47 were linked to visually sighted groups. Twenty-two Drifting Acoustic Spar Buoy Recorders were deployed and recovered throughout the survey area and will contribute additional information on beaked whale, Kogia, and baleen whale distribution and abundance. The seabird observers counted 3,266 individual birds in 1,605 seabird sightings among 29 species (plus 12 additional taxa). The most frequently sighted seabird species included the Sooty Tern (Onychoprion fuscata, 654 individuals), Short-tailed Shearwater (Ardenna tenuirostris, 547 individuals), and Red-footed Booby (Sula sula, 368 individuals). Oceanographic sampling was conducted with twice daily CTD casts when conditions permitted, with a total of 79 casts throughout the survey area.

Document Information

Document Type
Technical Memorandum (Tech Mem

Document Format
Acrobat Portable Document Format

Contact Information

Point of Contact
Erin M Oleson
erin.oleson@noaa.gov
(808)725-5712

Point of Contact
Marie C Hill
marie.hill@noaa.gov
(808)725-5710

Metadata Contact
Marie C Hill
marie.hill@noaa.gov
(808)725-5710

Extents

Geographic Area 1

141° W, 150° E, 24° N, 11° S

The MACS 2021 study area included the waters surrounding the Mariana Archipelago out to 200 nmi (370.4 km) from shore, which is the U.S. exclusive economic zone of Guam and the Commonwealth of the Northern Mariana Islands, hereafter referred to as the Marianas.

Time Frame 1
2021-05-03 - 2021-07-14

The Mariana Archipelago Cetacean Survey (MACS) 2021 project was a shipboard survey for cetaceans and seabirds around the Mariana Archipelago. MACS 2021 sailed aboard the Oscar Elton Sette, hereafter referred to as the Sette, for 59 days at sea. The project was conducted during 2 survey “legs”; Leg 1 sailed from 3 to 31 May and Leg 2 sailed from 15 June to 14 July.

Item Identification

Title: Cetacean and seabird data collected during the Mariana Archipelago Cetacean Survey (MACS), May-July 2021
Status: Completed
Creation Date: 2021-12
Revision Date: 2022-04
Abstract:

In summer 2021, the Pacific Islands Fisheries Science Center conducted a comprehensive line-transect survey for cetaceans and seabirds within the U.S. of the Guam and the Commonwealth of the Northern Mariana Islands exclusive economic zones. The Mariana Archipelago Cetacean Survey (MACS) 2021 project was part of the multi-year Pacific Marine Assessment Program for Protected Species (PacMAPPS) plan to conduct surveys and estimate density for cetacean species in regions of joint NOAA Fisheries, Bureau of Ocean Energy Management, and U.S. Navy interest. MACS 2021 sailed for 59 days at sea aboard the NOAA Ship Oscar Elton Sette in May-July, 2021 and surveyed 8,711.7 km of trackline. The team conducted visual and passive acoustic surveys during daylight hours when weather permitted. There were 77 cetacean sightings of at least 12 species. The most frequently sighted species during the project were sperm whales (Physeter macrocephalus, 18 sightings), false killer whales (Pseudorca crassidens, 10 sightings), and pantropical spotted dolphins (Stenella attenuata, 8 sightings). Approximately 2,300 photos of 9 cetacean species were collected for individual or species identification during 20 cetacean sightings. Two biopsy samples were collected from false killer whales. During towed array surveys there were 245 acoustic detections of cetaceans, of which 47 were linked to visually sighted groups. Twenty-two Drifting Acoustic Spar Buoy Recorders were deployed and recovered throughout the survey area and will contribute additional information on beaked whale, Kogia, and baleen whale distribution and abundance. The seabird observers counted 3,266 individual birds in 1,605 seabird sightings among 29 species (plus 12 additional taxa). The most frequently sighted seabird species included the Sooty Tern (Onychoprion fuscata, 654 individuals), Short-tailed Shearwater (Ardenna tenuirostris, 547 individuals), and Red-footed Booby (Sula sula, 368 individuals). Oceanographic sampling was conducted with twice daily CTD casts when conditions permitted, with a total of 79 casts throughout the survey area.

Purpose:

The primary goals of MACS 2021 were to collect data required to estimate the abundance and distribution, examine the population structure, and understand the habitat of cetaceans within the U.S. waters around the Mariana Archipelago. There were 5 major research components to the project:

-visual observations for cetaceans following a line-transect survey design;

-passive acoustic monitoring for cetaceans using towed hydrophone arrays, sonobuoys, and autonomous drifting acoustic recorders;

-collection of photographs and tissue samples for select cetacean groups;

-visual observations for seabirds following a strip-transect survey design; and

-ecosystem measurements for assessment of cetacean and seabird habitat.

Other Citation Details:

Yano KM, Hill MC, Oleson EM, McCullough JLK, and Henry AE. 2022. Cetacean and seabird data collected during the Mariana Archipelago Cetacean Survey (MACS), May-July 2021. U.S. Department of Commerce, NOAA Technical Memorandum NOAA-TM-NMFS-PIFSC-###, 59 p. doi:10.###

Supplemental Information:

The Mariana Archipelago Cetacean Survey (MACS) 2021 project was a shipboard survey for cetaceans and seabirds around the Mariana Archipelago. MACS 2021 sailed aboard the Oscar Elton Sette, hereafter referred to as the Sette, for 59 days at sea. The project was conducted during 2 survey "legs"; Leg 1 sailed from 3 to 31 May and Leg 2 sailed from 15 June to 14 July.

This project used many of the same methods as previous projects conducted by the Pacific Islands Fisheries Science Center (PIFSC), most recently the Winter Hawaiian Islands Cetacean and Ecosystem Assessment Survey in 2020 (Winter HICEAS; Yano et al. 2020) and the Hawaiian Islands Cetacean and Ecosystem Assessment Survey in 2017 (HICEAS; Yano et al. 2018).

Physical Location

Organization: Pacific Islands Fisheries Science Center
City: Honolulu
State/Province: HI
Country: USA

Document Information

Document Type: Technical Memorandum (Tech Mem
Format: Acrobat Portable Document Format
Status Code: Published

Support Roles

Data Steward

CC ID: 1167665
Date Effective From: 2006
Date Effective To:
Contact (Person): Hill, Marie C
Address: 1845 Wasp Blvd.
Honolulu, HI 96818
USA
Email Address: marie.hill@noaa.gov
Phone: (808)725-5710

Distributor

CC ID: 1167666
Date Effective From: 2006
Date Effective To:
Contact (Organization): Pacific Islands Fisheries Science Center (PIFSC)
Address: 1845 Wasp Blvd.
Honolulu, HI 96818
USA
Email Address: pifsc.info@noaa.gov
Phone: 808-725-5360
URL: https://www.pifsc.noaa.gov
Business Hours: 8:00 a.m. - 4:30 p.m.

Metadata Contact

CC ID: 1167667
Date Effective From: 2006
Date Effective To:
Contact (Person): Hill, Marie C
Address: 1845 Wasp Blvd.
Honolulu, HI 96818
USA
Email Address: marie.hill@noaa.gov
Phone: (808)725-5710

Point of Contact

CC ID: 1167668
Date Effective From: 2009
Date Effective To:
Contact (Person): Oleson, Erin M
Address: 1845 Wasp Blvd.
Honolulu, HI 96818
USA
Email Address: erin.oleson@noaa.gov
Phone: (808)725-5712
Business Hours: 9:00 a.m. - 5:00 p.m.

Point of Contact

CC ID: 1167669
Date Effective From: 2006
Date Effective To:
Contact (Person): Hill, Marie C
Address: 1845 Wasp Blvd.
Honolulu, HI 96818
USA
Email Address: marie.hill@noaa.gov
Phone: (808)725-5710
View Historical Support Roles

Extents

Extent Group 1

Extent Description:

The MACS 2021 study area included the waters surrounding the Mariana Archipelago out to 200 nmi (370.4 km) from shore, which is the U.S. exclusive economic zone of Guam and the Commonwealth of the Northern Mariana Islands, hereafter referred to as the Marianas.

Extent Group 1 / Geographic Area 1

CC ID: 1167673
W° Bound: 141
E° Bound: 150
N° Bound: 24
S° Bound: 11
Description

The MACS 2021 study area included the waters surrounding the Mariana Archipelago out to 200 nmi (370.4 km) from shore, which is the U.S. exclusive economic zone of Guam and the Commonwealth of the Northern Mariana Islands, hereafter referred to as the Marianas.

Extent Group 1 / Time Frame 1

CC ID: 1167672
Time Frame Type: Range
Start: 2021-05-03
End: 2021-07-14
Description:

The Mariana Archipelago Cetacean Survey (MACS) 2021 project was a shipboard survey for cetaceans and seabirds around the Mariana Archipelago. MACS 2021 sailed aboard the Oscar Elton Sette, hereafter referred to as the Sette, for 59 days at sea. The project was conducted during 2 survey “legs”; Leg 1 sailed from 3 to 31 May and Leg 2 sailed from 15 June to 14 July.

Distribution Information

Distribution 1

CC ID: 1180026
Start Date: 2021-08
End Date: Present
Download URL: https://repository.library.noaa.gov/view/noaa/41728
Distributor:

Catalog Details

Catalog Item ID: 66999
GUID: gov.noaa.nmfs.inport:66999
Metadata Record Created By: Marie C Hill
Metadata Record Created: 2022-04-12 00:34+0000
Metadata Record Last Modified By: SysAdmin InPortAdmin
Metadata Record Last Modified: 2022-11-28 18:58+0000
Metadata Record Published: 2022-08-09
Owner Org: PIFSC
Metadata Publication Status: Published Externally
Do Not Publish?: N
Metadata Last Review Date: 2022-04-12
Metadata Review Frequency: 1 Year
Metadata Next Review Date: 2023-04-12