Downscaling Ecological Trends from the Spatially Randomized Datasets of the National Coral Reef Monitoring Program

Oliver, Thomas A.; Barkley, Hannah; Couch, Courtney S.; Kindinger, Tye; Williams, Ivor D. (Ivor Douglas)

doi:10.25923/2fef-8r42

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Downscaling Ecological Trends from the Spatially Randomized Datasets of the National Coral Reef Monitoring Program

2020
By Oliver, Thomas A. ; Barkley, Hannah ; Couch, Courtney S. ; ...
Series: NOAA technical memorandum NMFS-PIFSC ; 106

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Details:

Personal Author:

Oliver, Thomas A. ; Barkley, Hannah ; Couch, Courtney S. ; Kindinger, Tye ; Williams, Ivor D. (Ivor Douglas)

Oliver, Thomas A. ; Barkley, Hannah ; Couch, Courtney S. ; Kindinger, Tye ; Williams, Ivor D. (Ivor Douglas) Less -
Corporate Authors:

United States. National Marine Fisheries Service, ; Pacific Islands Fisheries Science Center (U.S.) ; United States, National Oceanic and Atmospheric Administration, ; Coral Reef Conservation Program (U.S.)

United States. National Marine Fisheries Service, ; Pacific Islands Fisheries Science Center (U.S.) ; United States, National Oceanic and Atmospheric Administration, ; Coral Reef Conservation Program (U.S.) Less -
NOAA Program & Office:

NMFS (National Marine Fisheries Service) ; PIFSC (Pacific Islands Fisheries Science Center) ; CoRIS (Coral Reef Information System) ; NEPA (National Environmental Policy Act)

NMFS (National Marine Fisheries Service) ; PIFSC (Pacific Islands Fisheries Science Center) ; CoRIS (Coral Reef Information System) ; NEPA (National Environmental Policy Act) Less -
Description:

Our goals in this analysis are to (1) identify spatial sectors that are smaller than our current survey design scale while retaining robust, responsible statistical sampling, (2) ensure that our sectors are as ecologically homogenous as possible, and (3) extend our temporal coverage and sampling density by responsibly comparing similar metrics across multiple methods within the coherent statistical framework of a mixed-effects model. Specifically, we identify clusters based on NCRMP benthic cover data from four different survey methods, and then use mixed model analysis to assess both the optimal number of spatial sectors and the significance of long-term temporal change in hard coral cover in each newly created sector. Interesting patterns in Hawaiian percent cover data are revealed with significant long-term trends that are obscured at the island level: 13 out of 63 sectors show long-term decline, and only 4 out of 63 show an increase in coral cover.
Keywords:

[+]

Coral Reef Management Evaluation Monitoring Technique
Series:

NOAA technical memorandum NMFS-PIFSC ; 106
DOI:

https://doi.org/10.25923/2fef-8r42
CoRIS Project ID:

CRCP Project ID ; 31249
Document Type:

Technical Memorandum
Place as Subject:

Hawaii ; Pacific Ocean ; United States

Hawaii ; Pacific Ocean ; United States Less -
Rights Information:

Public Domain
Compliance:

Submitted
Main Document Checksum:

[+]

urn:sha256:224accbe0db64044d0828590149a74b0e9082b271d5f9a4644b989be08789ec3
Download URL:

https://repository.library.noaa.gov/view/noaa/25245/noaa_25245_DS1.pdf
File Type:

Data set from NCEI (Accession: 0211127)

htm

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