Accessing BCO-DMO data
log in    
Brought to you by BCO-DMO    

ERDDAP > info > bcodmo_dataset_720270

Title Sum-
Institution Dataset ID
     data   graph     files  public Total live mangrove coverage and annual NDVI classifications for the mangrove die-off region
based on Landsat 5 and 7 transformed imagery.
   ?     I   M   background (external link) RSS Subscribe BCO-DMO bcodmo_dataset_720270

The Dataset's Variables and Attributes

Row Type Variable Name Attribute Name Data Type Value
attribute NC_GLOBAL access_formats String .htmlTable,.csv,.json,.mat,.nc,.tsv
attribute NC_GLOBAL acquisition_description String Landsat 5 and 7 annual NDVI composites from 1989 to 2013 were acquired from
the [Google Earth Engine
website](\\"https://earthengine.google.com\\").\u00a0Handheld GPS units
(Garmin etrex 20) were used to outline and ground truth the mangrove die-off
area in June 2014. Historical hurricane tracks were acquired from the National
Oceanic and Atmospheric Administration (NOAA) [Digital Coasts

[Die-off GPS outline.CSV](\\"http://dmoserv3.bco-
dmo.org/data_docs/Mangrove_dieoff/GPS_outline.csv\\"): This file consists of
GPS coordinates collected by a handheld GPS of the die-off area. This was used
to create a shapefile of the die-off area in GIS.
attribute NC_GLOBAL awards_0_award_nid String 653796
attribute NC_GLOBAL awards_0_award_number String OCE-1541637
attribute NC_GLOBAL awards_0_data_url String http://www.nsf.gov/awardsearch/showAward.do?AwardNumber=1541637 (external link)
attribute NC_GLOBAL awards_0_funder_name String NSF Division of Ocean Sciences
attribute NC_GLOBAL awards_0_funding_acronym String NSF OCE
attribute NC_GLOBAL awards_0_funding_source_nid String 355
attribute NC_GLOBAL awards_0_program_manager String David L. Garrison
attribute NC_GLOBAL awards_0_program_manager_nid String 50534
attribute NC_GLOBAL cdm_data_type String Other
attribute NC_GLOBAL comment String Live area and NDVI measurements
C. Layman, R. Rossi, and S. K. Archer, PIs
Version 29 November 2017
attribute NC_GLOBAL Conventions String COARDS, CF-1.6, ACDD-1.3
attribute NC_GLOBAL creator_email String info at bco-dmo.org
attribute NC_GLOBAL creator_name String BCO-DMO
attribute NC_GLOBAL creator_type String institution
attribute NC_GLOBAL creator_url String https://www.bco-dmo.org/ (external link)
attribute NC_GLOBAL data_source String extract_data_as_tsv version 2.3 19 Dec 2019
attribute NC_GLOBAL date_created String 2017-12-01T22:08:39Z
attribute NC_GLOBAL date_modified String 2017-12-07T20:52:47Z
attribute NC_GLOBAL defaultDataQuery String &time<now
attribute NC_GLOBAL doi String 10.1575/1912/bco-dmo.720664
attribute NC_GLOBAL infoUrl String https://www.bco-dmo.org/dataset/720270 (external link)
attribute NC_GLOBAL institution String BCO-DMO
attribute NC_GLOBAL instruments_0_dataset_instrument_description String Handheld GPS unit used to outline and ground truth the mangrove die-off area
attribute NC_GLOBAL instruments_0_dataset_instrument_nid String 720625
attribute NC_GLOBAL instruments_0_description String Acquires satellite signals and tracks your location.
attribute NC_GLOBAL instruments_0_instrument_name String GPS receiver
attribute NC_GLOBAL instruments_0_instrument_nid String 706037
attribute NC_GLOBAL instruments_0_supplied_name String Garmin etrex 20
attribute NC_GLOBAL keywords String area, bco, bco-dmo, biological, chemical, data, dataset, difference, dmo, erddap, index, live, LiveArea, management, max, MaxNDVI, mean, MeanNDVI, ndvi, normalized, oceanography, office, preliminary, vegetation, year
attribute NC_GLOBAL license String https://www.bco-dmo.org/dataset/720270/license (external link)
attribute NC_GLOBAL metadata_source String https://www.bco-dmo.org/api/dataset/720270 (external link)
attribute NC_GLOBAL param_mapping String {'720270': {}}
attribute NC_GLOBAL parameter_source String https://www.bco-dmo.org/mapserver/dataset/720270/parameters (external link)
attribute NC_GLOBAL people_0_affiliation String North Carolina State University
attribute NC_GLOBAL people_0_affiliation_acronym String NCSU
attribute NC_GLOBAL people_0_person_name String Craig Layman
attribute NC_GLOBAL people_0_person_nid String 51691
attribute NC_GLOBAL people_0_role String Lead Principal Investigator
attribute NC_GLOBAL people_0_role_type String originator
attribute NC_GLOBAL people_1_affiliation String Fisheries and Oceans Canada, Pacific Region
attribute NC_GLOBAL people_1_person_name String Dr Stephanie K Archer
attribute NC_GLOBAL people_1_person_nid String 720296
attribute NC_GLOBAL people_1_role String Co-Principal Investigator
attribute NC_GLOBAL people_1_role_type String originator
attribute NC_GLOBAL people_2_affiliation String North Carolina State University
attribute NC_GLOBAL people_2_affiliation_acronym String NCSU
attribute NC_GLOBAL people_2_person_name String Ryann Rossi
attribute NC_GLOBAL people_2_person_nid String 664999
attribute NC_GLOBAL people_2_role String Co-Principal Investigator
attribute NC_GLOBAL people_2_role_type String originator
attribute NC_GLOBAL people_3_affiliation String North Carolina State University
attribute NC_GLOBAL people_3_affiliation_acronym String NCSU
attribute NC_GLOBAL people_3_person_name String Ryann Rossi
attribute NC_GLOBAL people_3_person_nid String 664999
attribute NC_GLOBAL people_3_role String Contact
attribute NC_GLOBAL people_3_role_type String related
attribute NC_GLOBAL people_4_affiliation String Woods Hole Oceanographic Institution
attribute NC_GLOBAL people_4_affiliation_acronym String WHOI BCO-DMO
attribute NC_GLOBAL people_4_person_name String Hannah Ake
attribute NC_GLOBAL people_4_person_nid String 650173
attribute NC_GLOBAL people_4_role String BCO-DMO Data Manager
attribute NC_GLOBAL people_4_role_type String related
attribute NC_GLOBAL project String Mangrove Die-off
attribute NC_GLOBAL projects_0_acronym String Mangrove Die-off
attribute NC_GLOBAL projects_0_description String Foundation species are those that form the basis for entire ecosystems, substantially altering the physical and biological characteristics of the areas in which they are found. Mangroves are one of the most conspicuous groups of foundation species, providing numerous ecosystems services which we highly value, e.g., habitat for ecologically and economically important species, shoreline stablilization and carbon storage. As such, global declines in mangroves is of upmost concern. For example, an extensive die-off of dwarf red mangrove has been identified in a remote area on the west side of Abaco Island, The Bahamas. Because of its remote nature of the site, the die-off is unlikely to be directly due to human activities. Despite its largely inaccessible nature, the area is ecologically and economically important, e.g., it is the primary bonefishing area on Abaco - an industry worth more than $150 million annually in The Bahamas. Therefore, it is of pressing concern for stakeholders in The Bahamas to identify the underlying cause(s) of decline and assess potential threat to mangroves in other areas. To do so, a series of activities will be carried out, included widespread surveys for a recently identified fungal pathogen, laboratory efforts to isolate and identify this pathogen, satellite imagery mapping activities, and simulated grazing experiments. The area in which the die-off is occurring is currently being considered for designation as a national park by the Bahamian National Trust (BNT). The results of the study will be directly communicated to the BNT and will be used to make immediate management decisions. In collaboration with two Bahamian environmental NGOs, Friends of the Environment and Bahamas Reef Environmental Education Foundation (BREEF), a citizen science-based survey for fungal lesions, as well as an educational module on mangrove ecology, will be designed. The data from the citizen-science and student surveys will be integrated in a map of the incidence of the lesions across The Bahamas. The citizen-science component, and interaction with bonefish guides, provides the opportunity to further integrate science and education. The educational module will be introduced at the BREEF summer teaching training workshop in July. This annual event typically includes 30 teachers from 10 islands. The investigators will continue to make all of our research findings immediately available and accessible to the public through the Abaco Scientist website (http://appliedecology.cals.ncsu.edu/absci/).
Provisioning of ecosystem services in the coastal realm is largely mediated by foundation species, such as mangroves, coral and salt marsh grasses. Many of these species are undergoing substantial declines throughout the world. These declines are often driven by complex, interacting, stressors that may be difficult to identify and elucidate. Despite the difficulty, unraveling such mechanistic drivers is essential for stemming declines and developing management strategies for these ecosystems. Mangroves provide many highly valued ecosystem services to coastal communities, yet worldwide these forests are rapidly declining. Much of this loss is related to various human activities along coastlines, but natural ecological mechanisms contribute to declines in many areas as well. An extensive die-off of dwarf red mangrove (Rhizophora mangle) was observed in a remote area on the west side of Abaco Island, The Bahamas. Preliminary observations suggest the die-off may be due to a combination of fungal pathogens, grazing, and physical stress. This combination of stressors is strikingly parallel to the drivers of salt marsh decline on the East and Gulf coasts of the U.S. To date, different fungal strains from mangrove leaves have been identified. One fungus is a species of Pestalotiopsis, an Ascomycete fungus, and members of this genus are known plant pathogens. There are also high densities of a nocturnally active herbivorous cricket (Tafilasca eleuthera) in die-off areas. It is unclear whether this species has recently colonized the area, is increasing in density, or both. In addition, high salinities in the sediment porewater in the die-off area suggest another potential stressor for the plants. A series of observations and experimental studies will be used to examine potential mechanistic drivers of the mangrove die-off. First, the extent of the die-off areas will be mapped using aerial surveys conducted with a GPS-integrated drone equipped with a video camera. Progression of the die-off will be examined with historical spectral profiles of mangroves from 1980s-present (on an annual basis) using Landsat satellite data. Second, the incidence of lesions on mangroves across Abaco Island and throughout The Bahamas will be explored using a series of citizen science initiatives. Third, identification of fungi will require DNA sequencing and examination of the morphology of fungal spores/conidia at North Carolina State University. Fourth, maintenance of a grazer exclusion experiment near the die-off location will provide an assessment of the role of herbivory in this system. Finally, simulated grazing scar experiments will be used to assess if grazing can indeed facilitate fungal infections.
attribute NC_GLOBAL projects_0_end_date String 2016-04
attribute NC_GLOBAL projects_0_geolocation String Abaco Island, The Bahamas
attribute NC_GLOBAL projects_0_name String An interdisciplinary approach to elucidating the causes of widespread mangrove die-off
attribute NC_GLOBAL projects_0_project_nid String 653797
attribute NC_GLOBAL projects_0_start_date String 2015-05
attribute NC_GLOBAL publisher_name String Biological and Chemical Oceanographic Data Management Office (BCO-DMO)
attribute NC_GLOBAL publisher_type String institution
attribute NC_GLOBAL sourceUrl String (local files)
attribute NC_GLOBAL standard_name_vocabulary String CF Standard Name Table v55
attribute NC_GLOBAL summary String These data were compiled to better determine when the mangrove die-off began.
NDVI values of 0.2 or greater correspond to live mangrove cover. These data
suggest the mangrove die-off may have started in 2008 and was exacerbated in
following years with some recovery in 2013. Live area was calculated by
determining the area of the die-off region with NDVI values greater than 0.2.
attribute NC_GLOBAL title String Total live mangrove coverage and annual NDVI classifications for the mangrove die-off region based on Landsat 5 and 7 transformed imagery.
attribute NC_GLOBAL version String 1
attribute NC_GLOBAL xml_source String osprey2erddap.update_xml() v1.3
variable Year   short  
attribute Year _FillValue short 32767
attribute Year actual_range short 1989, 2013
attribute Year bcodmo_name String year
attribute Year description String Year of sampling
attribute Year long_name String Year
attribute Year nerc_identifier String https://vocab.nerc.ac.uk/collection/P01/current/YEARXXXX/ (external link)
attribute Year units String unitless
variable MaxNDVI   double  
attribute MaxNDVI _FillValue double NaN
attribute MaxNDVI actual_range double 0.096008405, 0.690050006
attribute MaxNDVI bcodmo_name String density
attribute MaxNDVI description String Annual maximum Normalized Difference Vegetation Index (NDVI) for the mangrove die-off region based on Landsat 5 and 7 transformed imagery. The years 1990 and 2003 have been removed for excessive cloud cover.
attribute MaxNDVI long_name String Max NDVI
attribute MaxNDVI units String unitless
variable MeanNDVI   double  
attribute MeanNDVI _FillValue double NaN
attribute MeanNDVI actual_range double -0.125999113, 0.229209068
attribute MeanNDVI bcodmo_name String density
attribute MeanNDVI description String Annual mean Normalized Difference Vegetation Index (NDVI) for the mangrove die-off region based on Landsat 5 and 7 transformed imagery. The years 1990 and 2003 have been removed for excessive cloud cover.
attribute MeanNDVI long_name String Mean NDVI
attribute MeanNDVI units String unitless
variable LiveArea   double  
attribute LiveArea _FillValue double NaN
attribute LiveArea actual_range double 0.0, 0.888512537
attribute LiveArea bcodmo_name String density
attribute LiveArea description String Total live mangrove coverage based on Normalized Difference Vegetation Index (NDVI) classifications from Landsat 5 and 7 transformed imagery. The years 1990 and 2003 have been removed for excessive cloud cover.
attribute LiveArea long_name String Live Area
attribute LiveArea units String unitless

The information in the table above is also available in other file formats (.csv, .htmlTable, .itx, .json, .jsonlCSV1, .jsonlCSV, .jsonlKVP, .mat, .nc, .nccsv, .tsv, .xhtml) via a RESTful web service.

ERDDAP, Version 2.02
Disclaimers | Privacy Policy | Contact