Benthic Surveys in Culebra, Puerto Rico: comprehensive assessment of seagrass community structure and demography from transect surveys conducted in 2014 and 2022
This record provides seagrass habitat metrics collected in 2014 and 2022 at 13 monitoring stations in Ensenada Honda and Puerto Manglar in the island of Culebra, Puerto Rico, as part of Culebra's Ridge-to-Reef Monitoring and Evaluation Framework to assess the effectiveness of the NOAA strategies and actions in priority watersheds to reduce land-based sources of pollution (LBSP) impacts to the nearshore marine ecosystems of the island. Metrics include benthic cover of: total seagrasses, seagrasses by species, macroalgae, coralline algae, scleractinian corals, sponges, and sand/sediments, short shoot densities, and epiphyte relative abundance.
At each monitoring station, three replicate 30 meter transects were set up, oriented perpendicular to shoreline and extending offshore. A 0.25 m2 PVC sampling quadrat (50 cm x 50 cm) divided into 25 grid units (10 cm x 10 cm each) was used to estimate attributes of the seagrass community within each of 30 quadrats sampled contiguously (one at each meter mark) along each 30 m transect. Transect #2 was extended to the edge of the bed and seagrass community attributes were recorded within four quadrats placed equidistant from the 30 meter mark to the edge of the bed. Within each 0.25 m2 quadrat. seagrass community attributes were recorded implementing visually estimated Braun Blanquet (1932) index scores. Seagrass habitat metrics recorded included:
1- Total seagrass cover by species (i.e., Thalassia testudinum, Syringodium filiforme, Halodule wrightii, and Halophila stipulacea). Halophila was recorded as an individual seagrass species, but not considered in the total seagrass cover score.
2) Total cover of macroalgae, calcareous algae, sponge, corals, and sediment and/or rubble.
3) Epiphytic load index.
4) Short shoot densities (# shoots/100 cm2); collected within a single randomized 100 cm2 (10 cm x 10 cm) grid box within each quadrat along the 30 m transect.
Resources
3 resources available
-
Comprehensive seagrass community structure and demography from transect surveys on Culebra.....
TEXT/HTML -
GCMD Keyword Forum Page
TEXT/HTML -
Full Metadata Record
TEXT/HTML
Find Related Datasets
Search by Tags
Click any tag below to search for similar datasets
Complete Metadata
| @type | dcat:Dataset |
|---|---|
| accessLevel | non-public |
| contactPoint |
{ "fn": "Vandiver, Lisa", "@type": "vcard:Contact", "hasEmail": "mailto:lisa.vandiver@noaa.gov" } |
| describedByType | application/octet-steam |
| description | This record provides seagrass habitat metrics collected in 2014 and 2022 at 13 monitoring stations in Ensenada Honda and Puerto Manglar in the island of Culebra, Puerto Rico, as part of Culebra's Ridge-to-Reef Monitoring and Evaluation Framework to assess the effectiveness of the NOAA strategies and actions in priority watersheds to reduce land-based sources of pollution (LBSP) impacts to the nearshore marine ecosystems of the island. Metrics include benthic cover of: total seagrasses, seagrasses by species, macroalgae, coralline algae, scleractinian corals, sponges, and sand/sediments, short shoot densities, and epiphyte relative abundance. At each monitoring station, three replicate 30 meter transects were set up, oriented perpendicular to shoreline and extending offshore. A 0.25 m2 PVC sampling quadrat (50 cm x 50 cm) divided into 25 grid units (10 cm x 10 cm each) was used to estimate attributes of the seagrass community within each of 30 quadrats sampled contiguously (one at each meter mark) along each 30 m transect. Transect #2 was extended to the edge of the bed and seagrass community attributes were recorded within four quadrats placed equidistant from the 30 meter mark to the edge of the bed. Within each 0.25 m2 quadrat. seagrass community attributes were recorded implementing visually estimated Braun Blanquet (1932) index scores. Seagrass habitat metrics recorded included: 1- Total seagrass cover by species (i.e., Thalassia testudinum, Syringodium filiforme, Halodule wrightii, and Halophila stipulacea). Halophila was recorded as an individual seagrass species, but not considered in the total seagrass cover score. 2) Total cover of macroalgae, calcareous algae, sponge, corals, and sediment and/or rubble. 3) Epiphytic load index. 4) Short shoot densities (# shoots/100 cm2); collected within a single randomized 100 cm2 (10 cm x 10 cm) grid box within each quadrat along the 30 m transect. |
| distribution |
[ { "@type": "dcat:Distribution", "title": "Comprehensive seagrass community structure and demography from transect surveys on Culebra.....", "accessURL": "https://www.ncei.noaa.gov/access/metadata/landing-page/bin/iso?id=gov.noaa.nodc:0301897", "mediaType": "text/html", "description": "Comprehensive seagrass community structure and demography from transect surveys conducted in 2014 and 2022 in Culebra Island, Caribbean Sea (NCEI Accession 0301897", "describedByType": "application/octet-stream" }, { "@type": "dcat:Distribution", "title": "GCMD Keyword Forum Page", "accessURL": "https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords", "mediaType": "text/html", "description": "Global Change Master Directory (GCMD). 2026. GCMD Keywords, Version 24. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords", "describedByType": "application/octet-stream" }, { "@type": "dcat:Distribution", "title": "Full Metadata Record", "accessURL": "https://www.fisheries.noaa.gov/inport/item/71162", "mediaType": "text/html", "description": "View the complete metadata record on InPort for more information about this dataset.", "describedByType": "application/octet-stream" } ] |
| identifier | https://data.noaa.gov/waf/NOAA/nos/ocm/iso/xml/71162.xml |
| issued | 2014-01-01T00:00:00.000+00:00 |
| keyword |
[ "EARTH SCIENCE", "EARTH SCIENCE > BIOLOGICAL CLASSIFICATION > PLANTS", "EARTH SCIENCE > BIOLOGICAL CLASSIFICATION > PLANTS > MACROALGAE (SEAWEEDS)", "EARTH SCIENCE > BIOSPHERE > ECOLOGICAL DYNAMICS", "EARTH SCIENCE > BIOSPHERE > ECOLOGICAL DYNAMICS > COMMUNITY DYNAMICS", "EARTH SCIENCE > BIOSPHERE > ECOLOGICAL DYNAMICS > COMMUNITY DYNAMICS > COMMUNITY STRUCTURE", "EARTH SCIENCE > BIOSPHERE > ECOSYSTEMS > ANTHROPOGENIC/HUMAN INFLUENCED ECOSYSTEMS", "EARTH SCIENCE > BIOSPHERE > ECOSYSTEMS > AQUATIC ECOSYSTEMS", "EARTH SCIENCE > BIOSPHERE > ECOSYSTEMS > MARINE ECOSYSTEMS > COASTAL", "EARTH SCIENCE > BIOSPHERE > ECOSYSTEMS > MARINE ECOSYSTEMS > COASTAL > SAV/SEA GRASS BED", "EARTH SCIENCE > BIOSPHERE > ECOSYSTEMS > MARINE ECOSYSTEMS > ESTUARY > SAV/SEA GRASS BED", "EARTH SCIENCE > BIOSPHERE > VEGETATION", "EARTH SCIENCE > BIOSPHERE > VEGETATION > MACROPHYTES", "EARTH SCIENCE > HUMAN DIMENSIONS > HABITAT CONVERSION/FRAGMENTATION > REFORESTATION/REVEGETATION", "EARTH SCIENCE > OCEANS > COASTAL PROCESSES > BOTTOM COVER TYPE", "EARTH SCIENCE > OCEANS > COASTAL PROCESSES > ESTUARIES", "EARTH SCIENCE > OCEANS > MARINE ENVIRONMENT MONITORING", "Water Oceans and Coasts Theme", "Decadal", "CONTINENT > NORTH AMERICA > CENTRAL AMERICA", "OCEAN > ATLANTIC OCEAN > NORTH ATLANTIC OCEAN > CARIBBEAN SEA > PUERTO RICO", "10 meters - < 30 meters", "MISCELLANEOUS Gear > Diving", "Data Analysis", "Data Collections", "ZODIACS", "Benthic cover", "Land-based sources of pollution", "NOAA Coral Reef Conservation Program", "NOAA Restoration Center", "Seagrass demographics", "Seagrass epiphytes", "Seagrass monitoring transects", "Seagrasses", "Watershed restoration", "Culebra Island", "Ensenada Honda", "Nearshore", "Puerto Manglar", "Quadrats", "Scuba", "Seagrass visual assessment", "Small boat", "DOC/NOAA/NOS/OCM > Office of Coastal Management, National Ocean Service, NOAA, U.S. Department of Commerce", "CaribbeanRegion" ] |
| landingPage | https://www.fisheries.noaa.gov/inport/item/71162 |
| language |
[]
|
| license | https://creativecommons.org/publicdomain/zero/1.0/ |
| modified | 2022-01-01T00:00:00.000+00:00 |
| publisher |
{ "name": "Office for Coastal Management", "@type": "org:Organization" } |
| rights | otherRestrictions, unclassified |
| spatial | -65.24444444444,18.28861111111,-65.30833333333,18.31388888889 |
| temporal | 2014-01-01T00:00:00+00:00/2022-01-01T00:00:00+00:00 |
| theme |
[ "geospatial" ] |
| title | Benthic Surveys in Culebra, Puerto Rico: comprehensive assessment of seagrass community structure and demography from transect surveys conducted in 2014 and 2022 |
