A Comparison of Rapid Visual Assessments and Photo-Quadrat Analyses to Monitor Coral Reefs

Metadata Updated: October 9, 2019

A common problem for monitoring programs is a lag between collecting and disseminating results. Here, the authors show that the visual assessment of hard coral cover can provide a timely, generally reliable estimate, broadly comparable with values derived from photo-transect surveys, with known relative bias. Photo-quadrat analysis is critical in cases where a more detailed appraisal of habitat composition at finer taxonomic level is necessary and when time and resources permit. A benefit of conducting rapid visual assessments in addition to the photo-quadrat surveys is that the visual estimates are instantly available. Visual estimates of encrusting algae, and particularly fleshy macroalgae and turf algae estimates were not in as close agreement with the photo-quadrat estimates, highlighting the importance of improved and more rigorous training of observers. It is highly desirable for observer errors to be reduced as much as possible through improved training and the regular assessment of inter-observer variability.

Access & Use Information

Public: This dataset is intended for public access and use. License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

Downloads & Resources

References

https://ecos.fws.gov/ServCat/Reference/Profile/52057

References

https://ecos.fws.gov/ServCat/Reference/Profile/52057

Dates

Metadata Created Date April 30, 2019
Metadata Updated Date October 9, 2019

Metadata Source

Harvested from DOI CKAN Harvest Source

Additional Metadata

Resource Type Dataset
Metadata Created Date April 30, 2019
Metadata Updated Date October 9, 2019
Publisher Fish and Wildlife Service
Unique Identifier FWS_ServCat_52057
Maintainer
Brent Frakes
Maintainer Email
Public Access Level public
Bureau Code 010:18
Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
Metadata Catalog ID C:\Program Files (x86)\FWS\DataStore\Application\OpenData\FWS_ServCat_v1_1.json
Schema Version https://project-open-data.cio.gov/v1.1/schema
Catalog Describedby https://project-open-data.cio.gov/v1.1/schema/catalog.json
Data Quality true
Extras Rollup {"harvest_source_id": "34ce571b-cb98-4e0b-979f-30f9ecc452c5", "issued": "2015-05-15", "resource-type": "Dataset", "references": "\"https://ecos.fws.gov/ServCat/Reference/Profile/52057\"", "source_hash": "8ac499fdbd5a7c634fdb278f3d28ecc69709ffb3", "accessLevel": "public", "theme": "\"Unpublished Report\"", "spatial": "-177.6506,-14.55975,166.8696,28.48013", "programCode": "010:094", "010:028", "catalog_@context": "https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld", "catalog_describedBy": "https://project-open-data.cio.gov/v1.1/schema/catalog.json", "harvest_source_title": "DOI CKAN Harvest Source", "source_schema_version": "1.1", "catalog_conformsTo": "https://project-open-data.cio.gov/v1.1/schema", "bureauCode": "010:18", "landingPage": "https://ecos.fws.gov/ServCat/Reference/Profile/52057", "harvest_object_id": "e5ac7d0b-b4f4-4e90-9fa1-940fcdf4c758", "publisher": "Fish and Wildlife Service", "modified": "2015-05-15", "source_datajson_identifier": "true", "catalog_@id": "C:\\Program Files (x86)\\FWS\\DataStore\\Application\\OpenData\\FWS_ServCat_v1_1.json", "dataQuality": "true", "identifier": "FWS_ServCat_52057"}
Harvest Object Id 1a3e3ab1-0d90-4f73-8ed4-a95462589f03
Harvest Source Id 34ce571b-cb98-4e0b-979f-30f9ecc452c5
Harvest Source Title DOI CKAN Harvest Source
Data First Published 2015-05-15
Homepage URL https://ecos.fws.gov/ServCat/Reference/Profile/52057
Data Last Modified 2015-05-15
Program Code 010:094, 010:028
Related Documents "https://ecos.fws.gov/ServCat/Reference/Profile/52057"
Source Datajson Identifier true
Source Hash 8ac499fdbd5a7c634fdb278f3d28ecc69709ffb3
Source Schema Version 1.1
Spatial -177.6506,-14.55975,166.8696,28.48013
Category "Unpublished Report"

Didn't find what you're looking for? Suggest a dataset here.