Akule aerial survey 2015 and 2017
Project (PRJ) | Pacific Islands Fisheries Science Center (PIFSC)GUID: gov.noaa.nmfs.inport:55679 | Updated: October 20, 2022 | Published / External
Item Identification
Title: | Akule aerial survey 2015 and 2017 |
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Status: | Completed |
Abstract: |
The bigeye scad (Selar crumenophthalmus, locally known as akule) is an important food source for many Hawaiians and represents one of the most productive near-shore fisheries in Hawai'i. These fish occupy an intermediate trophic link between the coastal environment in which they feed and the pelagic environment of their predators. Akule are largely fished using surround nets deployed from a fishing boat. Boats frequently work in tandem with spotter planes to efficiently target the most advantageous schools. These spotter planes provide the means for a fishery-independent estimate of abundance based on direct observation, which may prove more sensitive to population trends than traditional estimates based on reported commercial catch and effort. An experienced spotter pilot was utilized to locate and estimate the biomass of akule schools surrounding the island of O'ahu for the 2015-2016 fishing season following a standardized schedule and protocol. The aerial survey data were then used to create fishery-independent indices of abundance at varying temporal and spatial scales to compare with indices generated from commercial catch and effort data. The data also allowed for a better understanding of akule spatial and temporal patterns around O'ahu. Trends among fishery-dependent and fishery-independent indices of abundance were similar. The western region of O'ahu has the highest index value, exceeding each of the other three regions by two to three times. A clear temporal trend was also observed; indices increased from the lowest values during the beginning season (November – January) to the highest values during the peak season (May – July). The corresponding fishing operation was also monitored, and the average catch totaled 20% of the targeted school when using surround gill nets. |
Purpose: |
Estimate biomass of akule schools around Oahu using plane and spotter pilot to determine if index of fishery-independent biomass estimation differs from index from catch and effort data reported to DAR. Secondarily, to confirm that aerial estimates are accurate or at least to understand the bias associated with estimating school size. |
Notes: |
Work done with the Council and Commercial Fisher through Cooperative Research Program. |
Keywords
Theme Keywords
Thesaurus | Keyword |
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UNCONTROLLED | |
None | FRMD |
None | PIFSC |
None | SAP |
Physical Location
Organization: | Pacific Islands Fisheries Science Center |
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City: | Honolulu |
State/Province: | HI |
Country: | USA |
Project Information
Project Type: | Project |
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Is Mandated?: | No |
Collection Authority: | Federal |
Collection Method: | Electronic, Paper, Photographic,Biological Samples |
Support Roles
Distributor
Date Effective From: | 2019 |
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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
Date Effective From: | 2019 |
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Date Effective To: | |
Contact (Person): | Langseth, Brian J |
Address: |
1845 Wasp Blvd. Honolulu, HI 96818 USA |
Email Address: | brian.langseth@noaa.gov |
Phone: | 808-725-5603 |
Point of Contact
Date Effective From: | 2019 |
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Date Effective To: | |
Contact (Person): | Langseth, Brian J |
Address: |
1845 Wasp Blvd. Honolulu, HI 96818 USA |
Email Address: | brian.langseth@noaa.gov |
Phone: | 808-725-5603 |
Principal Investigator
Date Effective From: | 2019 |
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Date Effective To: | |
Contact (Person): | Langseth, Brian J |
Address: |
1845 Wasp Blvd. Honolulu, HI 96818 USA |
Email Address: | brian.langseth@noaa.gov |
Phone: | 808-725-5603 |
Extents
Currentness Reference: | Ground Condition |
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Extent Group 1
Extent Group 1 / Geographic Area 1
Description |
Oahu, Hawaii |
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Extent Group 1 / Time Frame 1
Time Frame Type: | Range |
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Start: | 2017 |
End: | 2018 |
Extent Group 1 / Time Frame 2
Time Frame Type: | Range |
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Start: | 2015 |
End: | 2016 |
Access Information
Security Class: | Sensitive |
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Data Access Procedure: |
Send written request to PIFSC and requires approval by the PIFSC data owner. |
Data Access Constraints: |
Requires signing a PIFSC non-disclosure statement for fisheries confidential data. |
Metadata Access Constraints: |
None |
Metadata Use Constraints: |
None |
Child Items
Rubric scores updated every 15m
Type | Title |
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Data Set | 2015 Akule Aerial Survey Data |
Data Set | 2017 Akule Drone Survey Data |
Catalog Details
Catalog Item ID: | 55679 |
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GUID: | gov.noaa.nmfs.inport:55679 |
Metadata Record Created By: | Brian J Langseth |
Metadata Record Created: | 2019-02-27 15:02+0000 |
Metadata Record Last Modified By: | SysAdmin InPortAdmin |
Metadata Record Last Modified: | 2022-10-20 02:17+0000 |
Metadata Record Published: | 2019-07-25 |
Owner Org: | PIFSC |
Metadata Publication Status: | Published Externally |
Do Not Publish?: | N |
Metadata Last Review Date: | 2019-07-25 |
Metadata Review Frequency: | 1 Year |
Metadata Next Review Date: | 2020-07-25 |