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Description:
Title:
Comparing coral demographic surveys from in situ observations and Structure-from-Motion imagery shows low methodological bias
Author(s):
Couch, Courtney
Suka, Rhonda
Oliver, Thomas
Lamirand, Mia
Asbury, Mollie
Amir, Corinne
Vargas-Angel, Bernardo
Winston, Morgan
Huntington, Brittany
Lichowski, Frances
Halperin, Ariel
Gray, Andrew E.
Garriques, Joao
Boland, Raymond
Pomeroy, Noah
Samson, Jennifer
United States. National Marine Fisheries Service
Pacific Islands Fisheries Science Center (U.S.)
Corporate Name:
United States. National Marine Fisheries Service
Pacific Islands Fisheries Science Center (U.S.)
Dates of Publication:
2021
Abstract:
NOAA’s Ecosystem Sciences Division (ESD) at the Pacific Islands Fisheries Science Center (PIFSC) executes the NOAA Coral Reef Conservation Program’s National Coral Reef Monitoring Program (NCRMP) across 40 primary islands, atolls, and shallow banks in the U.S. Pacific. Through funding from CRCP, ESD works to understand how reefs are responding, in both time and space, to local and global disturbances, and what factors enhance reef resilience.Assessments of benthic cover and coral demography are key components of ESD’s Pacific-NCRMP and have historically been conducted using in situvisual surveys and photoquadrats by a team of three to four divers. With NOAA’s aging vessel infrastructure and increasing complexities of field missions, ESD is exploring innovative technologies to monitor more efficiently benthic communities. One approach gaining traction in reef sciences is photogrammetry, also known as Structure from Motion (SfM), which generates 3D reconstructions of a scene from overlapping images.SfM is a low-cost method, compared to techniques such as light detection and ranging (LIDAR). Here, we quantitatively compare data generated from in situsurveys to SfM-derived metrics for assessing coral demography to evaluate whether ESD can maintain continuity in our long-term NCRMP data sets if the program transitions to SfM survey methods.
Keywords:
Coral reefs and islands
Evaluation
Monitoring
Photogrammetry
Place Keywords:
Pacific Ocean
United States
Local Corporate Name:
NMFS (National Marine Fisheries Service)
PIFSC (Pacific Islands Fisheries Science Center)
JIMAR (Joint Institute for Marine and Atmospheric Research)
CoRIS (Coral Reef Information System)
Type of Resource:
Administrative Report
Genre:
Pacific Islands Fisheries Science Center administrative report H ; 21-01
Note:
NOAA’s Ecosystem Sciences Division (ESD) at the Pacific Islands Fisheries Science Center (PIFSC) executes the NOAA Coral Reef Conservation Program’s National Coral Reef Monitoring Program (NCRMP) across 40 primary islands, atolls, and shallow banks in the U.S. Pacific. Through funding from CRCP, ESD works to understand how reefs are responding, in both time and space, to local and global disturbances, and what factors enhance reef resilience.Assessments of benthic cover and coral demography are key components of ESD’s Pacific-NCRMP and have historically been conducted using in situvisual surveys and photoquadrats by a team of three to four divers. With NOAA’s aging vessel infrastructure and increasing complexities of field missions, ESD is exploring innovative technologies to monitor more efficiently benthic communities. One approach gaining traction in reef sciences is photogrammetry, also known as Structure from Motion (SfM), which generates 3D reconstructions of a scene from overlapping images.SfM is a low-cost method, compared to techniques such as light detection and ranging (LIDAR). Here, we quantitatively compare data generated from in situsurveys to SfM-derived metrics for assessing coral demography to evaluate whether ESD can maintain continuity in our long-term NCRMP data sets if the program transitions to SfM survey methods.
URL:
DOI:
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