Eco-spatial data layers of coral reef ecosystem drivers in American Samoa
Pacific Islands Fisheries Science Center
Data Set
(DS)
| ID: 65145
| Published / External
Created: 2021-08-04
|
Last Modified: 2023-10-17
Project (PRJ) | ID: 64847
ID: 65145
Data Set (DS)
* Discovery• First Pass
» Metadata Rubric
Item Identification
* » Title | Eco-spatial data layers of coral reef ecosystem drivers in American Samoa |
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Short Name | American Samoa: eco-geospatial tool |
* Status | Completed |
Creation Date | |
Revision Date | |
• Publication Date | 2021-10 |
* » Abstract |
Understanding the spatial distribution, intensity, overlap, and cumulative impact of human activities and environmental stressors is essential for effective management and protection of ecosystem services generated by coral reefs. The data described here are that of the GIS layers of the eco-geospatial tool developed by staff of the Ecosystem Sciences Division (ESD) at the Pacific Island Fisheries Science Center (PIFSC) for American Samoa Coral Reef Drivers, hosted by Pacific Islands Ocean Observing System (PACIOOS) at http://www.pacioos.hawaii.edu/projects/coral-drivers-amsam/. Partners included the American Samoa Division of Marine and Wildlife Resources and the American Samoa Coral Reef Advisory Group. This eco-geospatial tool gathers, organizes, analyzes, models and visualizes spatially-explicit information for American Samoa. Hereby, GIS layers are developed to provide the spatial patterns of anthropogenic and environmental drivers that influence the status of coral reefs in the region and the potential for degradation, including satellite-based oceanography (sea surface temperature [SST], chlorophyll-a, photosynthetically active radiation [PAR], Turbidity [Kd490]), wave power, coastal habitat modification, and sediment export to nearshore. These geospatial products provide the basis to answer questions such as which places and habitat types are the most impacted; which stressors should be the greatest concern in different areas; and where to prioritize different management strategies. In addition, these datasets also inform watershed management and conservation action plans. |
* Purpose |
American Samoa Coral Reef management agencies are mandated to protect coral reef ecosystems and the people who depend on them. Currently the spatial distribution, intensity, overlap and cumulative impact of human activities and environmental stressors is essential for effective management and protection of ecosystem services generated by coral reefs, is not readily available and easily accessible to resource managers and policy makers. The data layers generated in this project provide the means to identify how environmental and anthropogenic drivers may influence the spatial patterns of coral reef ecosystems across American Samoa, and support management aimed at promoting reef resilience and the protection of ecosystem services. This tool synthesizes large datasets and relevant environmental variables that will help managers in the territory answer these questions and then make informed management decisions for coral reef ecosystems. |
Notes | |
Other Citation Details |
Access the American Samoa Coral Reef Drivers eco-geospatial tool: http://www.pacioos.hawaii.edu/projects/coral-drivers-amsam/#data For a similar project in Hawaiʻi, visit Ocean Tipping Points: Hawaiʻi Case Study: http://www.pacioos.hawaii.edu/projects/oceantippingpoints/ |
• Supplemental Information |
This project was led by staff members of the National Oceanic Atmospheric Administration, Ecosystem Sciences Division, Pacific Islands Fisheries Science Center, Honolulu. Hawaiʻi. Partners included the American Samoa Division of Marine and Wildlife Resources and the American Samoa Coral Reef Advisory Group. This project was funded by NOAA’s Coral Reef Conservation Program, Grant #31248. |
DOI (Digital Object Identifier) | |
DOI Registration Authority | |
DOI Issue Date |
Keywords
Theme Keywords
Thesaurus | Keyword |
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Global Change Master Directory (GCMD) Science Keywords | EARTH SCIENCE > BIOSPHERE > ECOSYSTEMS > MARINE ECOSYSTEMS > REEF > CORAL REEF |
Global Change Master Directory (GCMD) Science Keywords | EARTH SCIENCE > HUMAN DIMENSIONS > ENVIRONMENTAL IMPACTS |
Global Change Master Directory (GCMD) Science Keywords | EARTH SCIENCE > HUMAN DIMENSIONS > HABITAT CONVERSION/FRAGMENTATION |
Global Change Master Directory (GCMD) Science Keywords | EARTH SCIENCE > HUMAN DIMENSIONS > HUMAN SETTLEMENTS > COASTAL AREAS |
Global Change Master Directory (GCMD) Science Keywords | EARTH SCIENCE > HUMAN DIMENSIONS > INFRASTRUCTURE |
Global Change Master Directory (GCMD) Science Keywords | EARTH SCIENCE > HUMAN DIMENSIONS > SUSTAINABILITY > ENVIRONMENTAL SUSTAINABILITY |
Global Change Master Directory (GCMD) Science Keywords | EARTH SCIENCE > OCEANS > COASTAL PROCESSES > CORAL REEFS |
ISO 19115 Topic Category | biota |
ISO 19115 Topic Category | environment |
ISO 19115 Topic Category | oceans |
CoRIS Discovery Thesaurus | ONLY ONE CoRIS Discovery Thesaurus REQUIRED |
CoRIS Theme Thesaurus | EARTH SCIENCE > Biosphere > Zoology > Corals > Reef Monitoring and Assessment > GIS |
CoRIS Theme Thesaurus | EARTH SCIENCE > Oceans > Coastal Processes > Coral Reefs |
NODC DATA TYPES THESAURUS | chlorophyll-a |
NODC DATA TYPES THESAURUS | habitat modification |
NODC DATA TYPES THESAURUS | Photosynthetically active radiation |
NODC DATA TYPES THESAURUS | sea surface temperature |
NODC DATA TYPES THESAURUS | sedimentation |
NODC DATA TYPES THESAURUS | turbidity |
NODC DATA TYPES THESAURUS | wave power |
NODC OBSERVATION TYPES THESAURUS | GIS product |
NODC OBSERVATION TYPES THESAURUS | model output |
NODC OBSERVATION TYPES THESAURUS | satellite data |
NODC PROJECT NAMES THESAURUS | CORAL REEF STUDIES |
NODC PROJECT NAMES THESAURUS | Ocean Acidification Program |
NODC SUBMITTING INSTITUTION NAMES THESAURUS | US DOC; NOAA; NMFS; Pacific Islands Fisheries Science Center; Ecosystem Sciences Division |
None | Chlorophyll-a |
None | Coral Reef Ecosystem Division |
None | Coral Reef Ecosystem Program |
None | Coral Reef Watch |
None | CRED |
None | CREP |
None | CRW |
None | eco-geospatial tool |
None | Ecosystem Sciences Division |
None | environmental modeling |
None | erosion |
None | ERRDAP |
None | ESD |
None | GIS |
None | irradiance |
None | land-based source pollution |
None | layers |
None | LBSP |
None | mapping |
None | Pacific Islands Fisheries Science Center |
None | PACIOOS |
None | PIFSC |
None | RAMP |
None | Reef Assessment and Monitoring Program |
None | vulnerability assessment |
Temporal Keywords
Thesaurus | Keyword |
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* Spatial Keywords
Thesaurus | Keyword |
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Global Change Master Directory (GCMD) Location Keywords | OCEAN > PACIFIC OCEAN > CENTRAL PACIFIC OCEAN > AMERICAN SAMOA |
CoRIS Place Thesaurus | COUNTRY/TERRITORY > United States of America > American Samoa > American Samoa > American Samoa (14S170W0000) |
CoRIS Place Thesaurus | OCEAN BASIN > Pacific Ocean > American Samoa > American Samoa (14S170W0000) |
NODC SEA AREA NAMES THESAURUS: | South Pacific Ocean |
Stratum Keywords
Thesaurus | Keyword |
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Instrument Keywords
Thesaurus | Keyword |
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Global Change Master Directory (GCMD) Instrument Keywords | Computer > Computer |
NODC INSTRUMENT TYPES THESAURUS | computer |
Platform Keywords
Thesaurus | Keyword |
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Physical Location
• » Organization | Pacific Islands Fisheries Science Center |
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• » City | Honolulu |
• » State/Province | HI |
• Country | USA |
• » Location Description |
Data Set Information
* Data Set Scope Code | Data Set |
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• Data Set Type | |
• Maintenance Frequency | None Planned |
Maintenance Note | |
» Data Presentation Form | |
• Entity Attribute Overview |
All data used to develop GIS layers for the American Samoa Coral Reef Drivers eco-geospatial tool is available on PACIOOS at links provided. The GIS layers include: 5 layers of chlorophyll, 5 layers of kd490, 5 layers of PAR, 5 layers of SST, 1 layer of wave power, 1 layer of sediment, and 1 layer of coastal modification |
Entity Attribute Detail Citation | |
Entity Attribute Detail URL | |
Distribution Liability |
While every effort has been made to ensure that these data are accurate and reliable within the limits of the current state of the art, NOAA cannot assume liability for any damages caused by errors or omissions in the data, nor as a result of the failure of the data to function on a particular system. NOAA makes no warranty, expressed or implied, nor does the fact of distribution constitute such a warranty. |
Data Set Credit | NOAA Fisheries, Ecosystem Sciences Division and funded by the NOAA Ocean Acidification Program |
Support Roles
* » Support Role | Data Set Credit |
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* » Date Effective From | 2019 |
Date Effective To | |
Organization | NOAA Coral Reef Conservation Program (CRCP) |
Address |
1305 East West Highway 10th Floor Silver Spring, MD 20910-3281 |
Email Address | |
Phone | (301) 713-3155 |
Fax | |
Mobile | |
URL | https://coralreef.noaa.gov |
Business Hours | |
Contact Instructions |
* » Support Role | Data Steward |
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* » Date Effective From | 2019 |
Date Effective To | |
Person | Vargas-Angel, Bernardo |
Address |
1845 Wasp Blvd. Honolulu, HI 96818 USA |
Email Address | bernardo.vargasangel@noaa.gov |
Phone | (808)725-5423 |
Fax | |
Mobile | |
URL | |
Business Hours | |
Contact Instructions |
* » Support Role | Distributor |
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* » Date Effective From | 2020 |
Date Effective To | |
Organization | U.S. Integrated Ocean Observing System Program (IOOS) |
Address |
1315 East-West Highway, 2nd Floor Silver Spring, MD 20910 |
Email Address | |
Phone | |
Fax | |
Mobile | |
URL | https://ioos.noaa.gov/ |
Business Hours | |
Contact Instructions |
PACIOOS hosts the GIS layers as well as links for the data which is publicly available. |
* » Support Role | Metadata Contact |
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* » Date Effective From | 2019 |
Date Effective To | |
Person | Akridge, Michael W |
Address |
1845 Wasp Blvd. Honolulu, HI 96818 USA |
Email Address | michael.akridge@noaa.gov |
Phone | (808)725-5483 |
Fax | |
Mobile | |
URL | |
Business Hours | |
Contact Instructions |
* » Support Role | Originator |
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* » Date Effective From | 2019 |
Date Effective To | |
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 |
Fax | |
Mobile | |
URL | https://www.pifsc.noaa.gov |
Business Hours | 8:00 a.m. - 4:30 p.m. |
Contact Instructions |
* » Support Role | Point of Contact |
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* » Date Effective From | 2019 |
Date Effective To | |
Person | Vargas-Angel, Bernardo |
Address |
1845 Wasp Blvd. Honolulu, HI 96818 USA |
Email Address | bernardo.vargasangel@noaa.gov |
Phone | (808)725-5423 |
Fax | |
Mobile | |
URL | |
Business Hours | |
Contact Instructions |
* » Support Role | |
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* » Date Effective From | |
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* » Contact | |
* Contact Instructions |
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* » Date Effective From | |
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* » Contact | |
* Contact Instructions |
* » Support Role | |
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* » Date Effective From | |
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* » Contact | |
* Contact Instructions |
Extents
Currentness Reference | Timeframes are listed for each data type |
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Extent Group 1
Extent Description |
American Samoa |
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Extent Group 1 / Geographic Area 1
* » W° Bound | -170.9367 |
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* » E° Bound | -170.4925 |
* » N° Bound | -14.1535 |
* » S° Bound | -14.4562 |
* » Description |
The maximum extents for which there is data available underlying the GIS layers. |
Extent Group 1 / Vertical Extent
EPSG Code | |
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Vertical Minimum | |
Vertical Maximum |
Extent Group 1 / Time Frame 1
* » Time Frame Type | Range |
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* » Start | 1985-01-01 |
End | 2018-12-28 |
Alternate Start As Of Info | |
Alternate End As Of Info | |
Description |
Sea-surface temperature data time frame: SST (blended of multiple sensors): to achieve the longest time series (Operational Sea Surface Temperature and Sea Ice Analysis (OSTIA) Sea Surface Temperature Reanalysis (1985-2002), Geo-Polar Blended Night-only Sea Surface Temperature Reanalysis (2002-2016), Geo-Polar Blended Night-only Sea Surface Temperature Near Real-Time (2017 to present)) |
Extent Group 1 / Time Frame 2
* » Time Frame Type | Range |
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* » Start | 1998-06-01 |
End | 2018-06-26 |
Alternate Start As Of Info | |
Alternate End As Of Info | |
Description |
Chlorophyll-a data time frame; Chl-a is ESA Ocean Color CCI v.3.1 (blend of ESA's MERIS, Aqua MODIS, SeaWiFS LAC and GAC, and VIIRS) |
Extent Group 1 / Time Frame 3
* » Time Frame Type | Range |
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* » Start | 1998-06-01 |
End | 2018-06-26 |
Alternate Start As Of Info | |
Alternate End As Of Info | |
Description |
Turbidity/kd490 data time frame; kd490 is derived from the same sensor as chl-a: ESA Ocean Color CCI v.3.1 (blend of ESA's MERIS, Aqua MODIS, SeaWiFS LAC and GAC, and VIIRS). |
Extent Group 1 / Time Frame 4
* » Time Frame Type | Range |
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* » Start | 2002 |
End | 2012 |
Alternate Start As Of Info | |
Alternate End As Of Info | |
Description |
Wave power data time frame; Only long term mean was derived for wave power, which was developed by Jeanette Clark to use Wave Watch III global wave model data and coastline analysis of wave exposure |
Extent Group 1 / Time Frame 5
* » Time Frame Type | Range |
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* » Start | 2013-01-01 |
End | 2018-06-26 |
Alternate Start As Of Info | |
Alternate End As Of Info | |
Description |
PAR/irradiance data time frame from Aqua MODIS |
Spatial Information
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Access Information
Data License | |
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Data License URL | |
Data License Statement | |
* » Security Class | Unclassified |
* Security Classification System |
Not applicable |
Security Handling Description |
Not applicable |
• Data Access Policy |
NOAA Ecosystem Science Division (ESD) Data Sharing Recommendations, version 9.0 updated August 12, 2015: ESD welcomes the opportunity to collaborate on research issues contributing to the scientific basis for better management of marine ecosystems. ESD has a very diverse set of field activities that generates large volumes of data using an array of data collection protocols. The following recommendations are for your consideration as you use this data: 1) Data analyses should take all field exigencies into account. The most effective way to do this would be active collaboration with ESD principal investigators. 2) In all presentations, product releases, or publications using data generated by ESD, proper acknowledgement of both ESD and the individuals responsible for data collection is expected. Citing the DOI (if available) is preferred, a non-DOI example is listed below. 3) If you collect or generate data for the same study areas, ESD requests that you share relevant information on complimentary data collections. 4) Those receiving data are strongly urged to inform the ESD Data Management Team of any errors and discrepancies that are discovered during the course of using these data. They are further urged to bring to the attention of the Team all problems and difficulties encountered in using these data. This information is necessary in order to improve the collections and to facilitate more efficient and economical data processing and retrieval. The users are asked to supply copies of any missing data that may be located, and to provide information as to significant subsets and special aggregations of data that are developed in using the material provided. Example citation: "This publication makes use of data products provided by the Ecosystem Science Division (ESD), Pacific Islands Fisheries Science Center (PIFSC), National Marine Fisheries Service (NMFS), National Oceanic and Atmospheric Administration (NOAA), with funding support from the NOAA Ocean Acidification Program (OAP). The analysis and interpretations presented here are solely that of the current authors.” |
» Data Access Procedure |
Data can be accessed online via the Pacific Islands Ocean Observing System (PACIOOS) Projects page: http://www.pacioos.hawaii.edu/projects/coral-drivers-amsam/#data |
• » Data Access Constraints |
None |
• Data Use Constraints |
Please cite NOAA Fisheries, Ecosystem Science Division (ESD) when using the data. Example: Ecosystem Science Division; Pacific Islands Fisheries Science Center, 2021: Land-Based Source Pollution (LBSP) GIS Layers for American Samoa Coral Reef Drivers eco-geospatial tool, https://www.fisheries.noaa.gov/inport/item/65145. |
Metadata Access Constraints |
None |
Metadata Use Constraints |
None |
Distribution Information
Start Date | |
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» Download URL | https://www.pacioos.hawaii.edu/projects/coral-drivers-amsam/#data |
Distributor | U.S. Integrated Ocean Observing System Program (IOOS) (2020 - Present) |
File Name | Online Tool |
Description |
All data can be found in the map viewer, and are also available for download in various formats via this link. |
File Date/Time | |
File Type (Deprecated) | Web Mapping Service |
Distribution Format | WMS - Web Map Service |
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URLs
URL | https://www.fisheries.noaa.gov/region/pacific-islands#science |
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Name | NOAA Fisheries Pacific Islands Region - Science Overview |
URL Type | Online Resource |
File Resource Format | |
Description |
URL | https://www.pacioos.hawaii.edu/projects/oceantippingpoints/ |
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Name | Ocean Tipping Points Project |
URL Type | Online Resource |
File Resource Format | HTML |
Description |
A similar project in Hawai'i |
URL | https://www.mdpi.com/2306-5338/6/1/18#cite |
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Name | American Samoa Nutrient Work by Schuler (2019) |
URL Type | Online Resource |
File Resource Format | HTML |
Description |
A link to access relevant work assessing nutrient loading to coastal ecosystems in American Samoa. The full citation below: Shuler, Christopher K., Daniel W. Amato, Veronica Gibson, Lydia Baker, Ashley N. Olguin, Henrietta Dulai, Celia M. Smith, and Rosanna A. Alegado 2019. "Assessment of Terrigenous Nutrient Loading to Coastal Ecosystems along a Human Land-Use Gradient, Tutuila, American Samoa" Hydrology 6, no. 1: 18. https://doi.org/10.3390/hydrology6010018 |
URL | https://www.researchgate.net/publication/343558774_Deploying_Earth_Observations_to_Evaluate_the_Impacts_of_Land_Cover_and_Water_Quality_Changes_to_Improve_Coastal_Management_in_American_Samoa |
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Name | Satellite based chlorophyll work by NASA DEVELOP Project |
URL Type | Online Resource |
File Resource Format | HTML |
Description |
A link to access satellite based chlorophyll work in coastal American Samoa by NASA DEVELOP Project Worsham, Marshall & Collin, Melissa & Davis, Eric & Markarian, Arev. (2019). Deploying Earth Observations to Evaluate the Impacts of Land Cover and Water Quality Changes to Improve Coastal Management in American Samoa. 10.13140/RG.2.2.22358.88640. |
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Activity Log
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Technical Environment
Description |
R , ArcGIS, and sedimentation modeling with the InVEST toolset |
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Data Quality
Representativeness |
Coastal habitat modification is limited to data collected in 2003, and does not represent reflect recent developments. |
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Accuracy |
Ocean color products are unreliable (heavily influenced) by the substrate reflectance in the nearshore area, so the nearshore pixels are filtered out (no values). These filtered blank cells were filled in with the estimated values from neighboring pixels. Limitations of InVest SDR model include that the Universal Soil Loss Equation represents only rill or sheet erosion process, and doesn’t include gully, streambank and mass erosion. The models also average sediment export to the nearshore, doesn’t capture the intense storm events, and the equation was developed for the U.S. mainland |
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Completeness Report |
GIS layers were developed with data for specific timeframes, as noted in this metadata record. |
Conceptual Consistency |
Data for these layers were collected by multiple partners and detailed on the website of which the eco-geospatial tool is hosted. This project is also related to the Ocean Tipping Points project, which was developed for Hawai'i conservation and management. This tool was developed as a series of collaborative meetings among partners. |
» Quality Control Procedures Employed |
Data collected and produced by models was examined for each data layer as described on http://www.pacioos.hawaii.edu/projects/coral-drivers-amsam/#data |
Data Management
» Have Resources for Management of these Data Been Identified? | Yes |
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» Approximate Percentage of Budget for these Data Devoted to Data Management | Unknown |
» Do these Data Comply with the Data Access Directive? | Yes |
» Is Access to the Data Limited Based on an Approved Waiver? | No |
» If Distributor (Data Hosting Service) is Needed, Please Indicate | |
» Approximate Delay Between Data Collection and Dissemination | Unknown |
» If Delay is Longer than Latency of Automated Processing, Indicate Under What Authority Data Access is Delayed | |
» Actual or Planned Long-Term Data Archive Location | Other |
» If World Data Center or Other, Specify | Tool will be available on PACIOOS website |
» Approximate Delay Between Data Collection and Archiving | Unknown |
» How Will the Data Be Protected from Accidental or Malicious Modification or Deletion Prior to Receipt by the Archive? |
No data will be archived. |
Lineage
» Lineage Statement |
To develop the LBSP GIS layers, there are three main components: satellite based oceanography, coastal habitat modification, and sediment export to nearshore. All data collected is publicly available, and utilized in an ArcGIS environment. The InVEST toolset was used to model sedimentation The number of layers included in the tool which span the three components: 5 layers of chlorophyll, 5 layers of kd490, 5 layers of PAR, 5 layers of SST, 1 layer of wave power,1 layer of sediment, and 1 layer of coastal modification |
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Process Steps
Process Step Number | 1 |
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» Description |
Satellite-based Oceanography Component: Part I (with R and ERRDAP): Publically-available data was obtained for the multiple datastreams for satellite-based oceanography. Oceanographic variables: Sea surface temperature (SST) , Chlorophyll-a (CHL), PAR/irradiance (PAR), Turbidity/kd490 (KD4), and Wave power* (WAV). For SST, Chl-a, PAR, Kd490: R was used to take data from ERRDAP to calculate Oceanographic metrics. Part II (in ArcGIS): After the climatology metrics are calculated, ocean color products (Chl-a, Kd490, PAR) will go through extra steps to remove unreliable nearshore values (due reflectaction) and fill in those gaps by averaging the neighbor values. All products are extracted by a 10km buffer. These processes are done in the ArcGIS environment, and the detailed steps are described in the LBSP project - SOP for processing remote sensing data.docx. Data sources: SST (blended of multiple sensors): to achieve the longest time series (Operational Sea Surface Temperature and Sea Ice Analysis (OSTIA) Sea Surface Temperature Reanalysis (1985-2002), Geo-Polar Blended Night-only Sea Surface Temperature Reanalysis (2002-2016), Geo-Polar Blended Night-only Sea Surface Temperature Near Real-Time (2017 to present)); PAR data is from Aqua MODIS; Chl-a is from ESA Ocean Color CCI v.3.1 (blend of ESA's MERIS, Aqua MODIS, SeaWiFS LAC and GAC, and VIIRS); Turbidity/kd490 is derived from the same sensor as chl-a: ESA Ocean Color CCI v.3.1 (blend of ESA's MERIS, Aqua MODIS, SeaWiFS LAC and GAC, and VIIRS). Metrics calculated: Long term mean (MEAN) calculated by taking the average of all weekly data for each pixel, Standard deviation of long term mean (SDEV) calculated by taking the standard deviation over all weekly data for each pixel, Maximum monthly climatological mean (MMCM) calculated by first taking the average of all 8-day periods for each month, then taking the maximum of those 12 values for each pixel. Also Maximum annual average anomaly (MAAA) calculated by taking the average of the annual maximum values in excess of the MMCM for each pixel, and Average annual frequency of anomalies (AAFA) calculated by the average # of weeks where an anomaly occurred divided by number of weeks in a year. Only long term mean was derived for wave power, which was developed by Jeanette Clark to use Wave Watch III global wave model data and coastline analysis of wave exposure |
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Process Contact | McCoy, Kaylyn S |
Phone (Voice) | (808)725-5471 |
Email Address | kaylyn.mccoy@noaa.gov |
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Process Step Number | 2 |
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» Description |
Coastal habitat modification component: Coastal Habitat Modification, defined as Area of the alteration, or removal of geomorphic structure as a result of human use, was measured with Benthic Habitat Maps created by NOAA National Center for Coastal Ocean Science Biogeography Branch and the Environmental Sensitivity Index created by NOAA Office of Response and Restoration. Data were collected in 2004, extends to ~3 km offshore, identifies habitat areas such as sand, hardbottom reef, scattered rock, artificial/dredged. To develop a coastal habitat modification model, two input layers are mosaiced with a 250m raster file; In summary, this layer combines man-made shoreline modifications and in-water modifications to coastal habitat, and includes a buffer to indicate possible adjacent affected areas. Data for shoreline modification is from 2003, does not show recent development. |
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Process Step Number | 3 |
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» Description |
Sediment export to nearshore component: The annual amount of sediment (tons/yr) reaching the coast was calculated using the Integrated Valuation of Ecosystem Services and Tradeoffs (InVEST) Sediment Delivery Ratio model for Tutuila. Sediment load is a function of land use and vegetation type, geology, soil characteristics, rainfall, slope, and hydrology. Only land areas that drain to a stream which reaches the coast and have a sediment supply were considered. InVest Sediment Delivery Ratio Available for download at: https://naturalcapitalproject.stanford.edu/software/invest Documentation: http://data.naturalcapitalproject.org/nightly-build/invest-users-guide/html/sdr.html# Rainfall, digital elevation models, soil, land cover, and watershed data was input into the InVest SDR model to estimate annual soil loss and amount of sediment exported to the stream. Digital Elevation Model (DEM) data is from LiDAR, collected in 2012 and downloaded from NOS Data Access Viewer(https://coast.noaa.gov/dataviewer/#/) Projection: UTM 2S Horizontal Datum: WGS84/ITRF Vertical Datum: NAVD88 Output Resolution: 1.0m Not all drainage networks are captured in DEM and need to be manually adjusted Watershed polygons were created with the DEM in ArcGIS taking into account flow direction, accumulated flow, watershed delineation, and stream network. Rainfall/ Erosivity map was taken from NRCS Field Office Technical Guide: https://efotg.sc.egov.usda.gov/references/public/HI/R_Factor_Map_Am_Samoa.doc then digitized. Erodibility values were extracted from NRCS Web Soil Survey Website and joined with the polygon shapefile |
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Acquisition Information
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Catalog Details
Catalog Item ID | 65145 |
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Metadata Record Created By | Brooke Olenski |
Metadata Record Created | 2021-08-04 21:26+0000 |
Metadata Record Last Modified By | SysAdmin InPortAdmin |
» Metadata Record Last Modified | 2023-10-17 16:12+0000 |
Metadata Record Published | 2021-11-18 |
Owner Org | PIFSC |
Metadata Publication Status | Published Externally |
Do Not Publish? | N |
Metadata Workflow State | Published / External |
Metadata Last Review Date | 2021-11-18 |
Metadata Review Frequency | 1 Year |
Metadata Next Review Date | 2022-11-18 |
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