Identification_Information:
Citation:
Citation_Information:
Originator: Commission for Environmental Cooperation
Publication_Date: 2021
Title: North American Mangroves Distribution
Geospatial_Data_Presentation_Form: Vector digital data
Publication_Information:
Publication_Place: Montréal, Québec, Canada
Publisher: Commission for Environmental Cooperation
Online_Linkage: http://www.cec.org/north-american-environmental-atlas/
Description:
Abstract:
The extent of Mangroves in North America was estimated by combining datasets from different sources using different methods. These include global and national datasets that were generated from remote sensed imagery. The current dataset serves as an updated of the previously North American Mangroves distribution map published by the Commission for Environmental Cooperation in 2016.
Commission for Environmental Cooperation (CEC). 2016. “North American Blue Carbon”. Ed. 1.0, Vector digital data [1:10,000,000]. Available at http://www.cec.org/tools-and-resources/map-files/north-american-blue-carbon-2017 CEC. 2016. North America’s Blue Carbon: Assessing Seagrass, Salt Marsh and Mangrove Distribution and Carbon Sinks. Montreal, Canada: Commission for Environmental Cooperation. 54 pp. Available at http://www3.cec.org/islandora/en/item/11664-north-america-s-blue-carbon-assessing-seagrass-salt-marsh-and-mangrove-en.pdf
A) Datasets used in the North American 2021 Mangroves Distribution Map. A more detailed description of all the datasets used, as well as the preprocess performed to extract Mangroves information is available in the accompanying document “Blue Carbon Map source data notes 2021.docx”.
MG_01 Global Distribution of Mangroves USGS (2011)
World Conservation Monitoring Center-United Nations Environment Programme
Spatial Domain: Global
Geometry: Polygon
Data: https://data.unep-wcmc.org/datasets/4
Source metadata: https://data.unep-wcmc.org/pdfs/4/Global_Distribution_of_Mangroves_USGS.pdf?1615453294
Source file name: 14_001_WCMC010_MangroveUSGS2011_v1_3.shp
Scale/Resolution: 30 meters
Version: 1.3
Year of Origin: 2011
Year of Publication: 2015
MG_02 Mangrove distribution in Mexico, 2020
National Commission for the Knowledge and Use of Biodiversity (CONABIO)
Spatial Domain: Mexico
Geometry: Polygon
Data: http://geoportal.conabio.gob.mx/metadatos/doc/html/mx_man20gw.html
Source metadata: http://geoportal.conabio.gob.mx/metadatos/doc/html/mx_man20gw.html
Source file name: mx_man20gw.shp
Scale/Resolution: 1:50,000
Version: 1.0
Year of Origin: 2020
Year of Publication: 2021
MG_03 Disturbed Mangrove distribution in Mexico, 2020
National Commission for the Knowledge and Use of Biodiversity (CONABIO)
Spatial Domain: Mexico
Geometry: Polygon
Data: http://geoportal.conabio.gob.mx/metadatos/doc/html/mx_mp2020gw.html
Source metadata: http://geoportal.conabio.gob.mx/metadatos/doc/html/mx_mp2020gw.html
Source file name: mx_mp2020gw.shp
Scale/Resolution: 1:50,000
Version: 1.0
Year of Origin: 2020
Year of Publication: 2021
Purpose:
This dataset was created as part of a collaborative effort between the Mexican Carbon Program that conducted an exhaustive search for data updates or new datasets available, as well as coordinate three national workshops with Blue Carbon experts from Canada, the United States and Mexico to retrieve feedback on the best practices to map Blue Carbon ecosystems across North America; and the Commission for Environmental Cooperation that conducted the review and evaluation of the datasets collected, as well as the map integration process and cartographic refinement in collaboration with Ricardo Llamas (rllamas@comunidad.unam.mx)as independent geospatial consultant.
The goal of this datasets is to serve as a geospatial tool to estimate Blue Carbon Sink potential of North America in ecosystems such as Mangroves, as well as provide a standardized and publicly available input dataset for various Carbon Budget analyses.
Supplemental_Information:
The Commission for Environmental Cooperation (CEC) is an international
organization created by Canada, Mexico, and the United States of
America under the North American Agreement on Environmental Cooperation
(NAAEC). The CEC was established to address regional environmental concerns, help prevent potential trade and environmental conflicts, and
to promote the effective enforcement of environmental law. The
Agreement complements the environmental provisions of the North
American Free Trade Agreement (NAFTA). Further information on the CEC
is available from http://www.cec.org/ or from
>Commission for Environmental Cooperation
>700 de la Gauchetière St. West
>Suite 1620
>Montréal (Québec)
>H3B 5M2 Canada
>
>Telephone: 1 514 350 4300
>Facsimile: 1 514 350 4314
>Electronic mail: info@cec.org
>
A more detailed description of all the datasets used, as well as the preprocess performed to extract Mangroves information is available in the accompanying document “Blue Carbon Map source data notes 2021.docx”
Information related to the Blue Carbon legacy maps produced by the Commission for Environmental Cooperation can be found in the following reports:
1) CEC. 2014. North America’s Blue Carbon: Assessing Seagrass, Salt Marsh and Mangrove Carbon Sinks A Final Report. Montreal, Canada: Commission for Environmental Cooperation. 219 pp
2)CEC. 2017. Blue Carbon Seagrass Mapping in Canada and The United States: British Columbia Washington and Oregon, Developing an Algorithm and Quantifying Eelgrass Extent A Final Report. Montreal, Canada: Commission for Environmental Cooperation. 82 pp
Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 3 May 2021
Currentness_Reference: Publication date
Status:
Progress: Complete
Maintenance_and_Update_Frequency: Irregular
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -170.5
East_Bounding_Coordinate: -50.0
North_Bounding_Coordinate: 85.0
South_Bounding_Coordinate: 14.0
Keywords:
Theme:
Theme_Keyword_Thesaurus: ISO 19115 Topic Category
Theme_Keyword: biota
Theme_Keyword: environment
Theme_Keyword: oceans
Theme:
Theme_Keyword_Thesaurus: GCMD science keywords
Theme_Keyword: Saltmarsh
Theme_Keyword: Mangrove
Theme_Keyword: Disturbed Mangrove
Place:
Place_Keyword_Thesaurus: None
Place_Keyword: North America
Theme_Keyword: Canada
Place_Keyword: Mexico
Place_Keyword: United States of America
Access_Constraints: None
Use_Constraints:
None. Acknowledgement of the Commission for Environmental Cooperation
would be appreciated in products derived from these data.
Point_of_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: Commission for Environmental Cooperation
Contact_Address:
Address_Type: Mailing and physical address
Address: 700 de la Gauchetière St. West, Suite 1620
City: Montreal
State_or_Province: Quebec
Postal_Code: H3B 5M2
Country: Canada
Contact_Voice_Telephone: 1 514 350 4300
Contact_Facsimile_Telephone: 1 514 350 4314
Contact_Electronic_Mail_Address: info@cec.org
Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report:
Attributes and values were reviewed manually. No additional tests for
attribute accuracy was performed on this data set.
Logical_Consistency_Report:
No tests for logical consistency have been performed on this data set.
Completeness_Report:
The international, national, and local dataset used in this analysis have known data gaps. In this dataset, the most updated and spatially extended Mangroves datasets to our knowledge have been used. Future updates are envisioned as new data is available and new data providers offer spatial information over areas omitted in the current map.
North American 2021 Mangroves Distribution, Map Integration Report:
The datasets used for the North America Blue Carbon Maps integration were preprocessed to extract spatial information representing the distribution of Saltmarshes, Mangroves and Seagrasses.
Preprocesses conducted with the Mangroves datasets were performed between December 2020 and March 2021.
Preprocessing by dataset:
MG_01. Global Distribution of Mangroves USGS (2011)
A “selection by attributes process” was performed to isolate all mangrove polygons within the United States and Mexico territories. All polygons located in the USA territories over the Pacific Ocean as well as Puerto Rico were deselected. A final saltmarshes layer was exported from the remaining polygons selection.
MG_02. Distribución de los manglares en México en 2020
No preprocessing was needed for this dataset.
MG_03. Distribución de manglar perturbado de México en 2020
No preprocessing was needed for this dataset.
Cartographic Integration Process:
As some of the datasets show spatial overlaps, some criteria were defined to deal with overlapping polygons from different data sources and keep as much spatial information as possible.
In order to define the criteria to prioritize sources datasets on areas where information overlaps, the Mexican Carbon Program conducted a series of three national workshops with experts from Canada, the United States and Mexico.
Experts were asked to rank the sources datasets features that should be considered when selecting the sources of information that must prevail over areas with overlapping polygons. Six quality features were evaluated by the experts, comprising:
> Most updated datasets
> Fine spatial resolution over coarse spatial resolution
> Datasets reporting accuracy
> National or regional datasets over global datasets
> Independent research studies over institutional datasets
> Most complete metadata
A group of eleven experts participated in a survey to rank the criteria
>----------------------------------------------------------------
Name Institution Email
Nate Herold NOAA nate.herold@noaa.gov
Margot Hessing-Lewis Hakai Institute margot@hakai.org
Gail Chmura McGill University gail.chmura@mcgill.ca
Dan Mulrooney Parks Canada dan.mulrooney@canada.ca
Anna Hilting NOAA anna.hilting@noaa.gov
Ma. Teresa Rodríguez CONABIO mrodrig@conabio.gob.mx
Joanna Acosta Velázquez Aura Manglares y costas joanna.acosta@gmail.com
Iliana Pérez Espinosa CONABIO iperez@conabio.gob.mx
Carlos Troche CONABIO ctroche@conabio.gob.mx
Beatriz Corral Osuna INECC beatriz.corral@gmail.com
Zulia Sánchez Mejía ITSON zulia.sanchez@itson.edu
As a result of the experts-defined criteria and the characteristics of the information provided by each source dataset, we defined each dataset as authoritative over its corresponding region.
The Mexico Mangrove Distribution map and the Disturbed Mangrove distribution map produced by the National Commission for the Knowledge and Use of Biodiversity (CONABIO) were the defined as the only authoritative source over Mexico. Thus, mangrove distribution data provided by the WCMC map was not used as input layer over Mexico.
Mangrove polygons form both mangrove distribution and disturbed mangrove distribution over Mexico spatially complement each other without any overlapping, thus, no further processes were required prior the use of these layers for the North America Mangrove distribution map.
Step 01
All polygons from the WCMC Global Distribution of Mangroves corresponding to USA territory were selected and exported to a new spatial layer.
Output = WCMC_mangroves_laea_final.shp
Step 02
All the layers previously prepared and preprocessed with no overlapping areas between source data sets were merged in a new spatial layer.
> WCMC_mangroves_laea_final.shp
> MEX_mangroves_laea_final.shp
> MEX_disturbed_mangroves_laea_final.shp
Output = NorthAmerica_mangrove_layers_merge.shp
Step 03
A process of “Multipart to Single part” was applied to the output layer from the previous step. This way, all polygons are individually accounted as single polygons, which will allow to dissolve spatially connected polygons that share the same values in all the attribute fields.
Output = NorthAmerica_mangrove_layers_singlepart.shp
Step 04
A “Dissolve” process was applied to the output layer from the previous step. All individual polygons that are spatially connected and share the same values across the thirteen common attributed fields (except area) will break down into new polygons. This way, the number of polygons and the size of the final spatial layer file is reduced. No multipart features creation is allowed in this step.
Output = NorthAmerica_mangrove_polygons_dissolve.shp
Step 05
A new field “AREA_SQMT” is created and the area in squared meters is calculated for this field. The area is calculated based on the map coordinate reference system, 1 decimal point and thousands separated by comas are defined.
Step 06
After a final check of attribute table consistency and data display on different GIS platforms, a spatial data file in ESRI “shp” format is generated to provide the final CEC North America mangroves distribution map.
Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method: Vector
Point_and_Vector_Object_Information:
SDTS_Terms_Description:
SDTS_Point_and_Vector_Object_Type: G-polygon
Point_and_Vector_Object_Count: 34630
Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Planar:
Map_Projection:
Map_Projection_Name: Sphere_ARC_INFO_Lambert_Azimuthal_Equal_Area
Projection: Lambert
Longitude_of_Projection_Center/Central Meridian: -100.0
Latitude_of_Projection_Center/Origin: 45.0
False_Easting: 0.0
False_Northing: 0.0
Planar_Coordinate_Information:
Planar_Coordinate_Encoding_Method: Coordinate pair
Coordinate_Representation:
Abscissa_Resolution: 0.001
Ordinate_Resolution: 0.001
Planar_Distance_Units: Meter
Geodetic_Model/Datum:
Horizontal_Datum_Name: D_Sphere_ARC_INFO
Ellipsoid_Name: Sphere_ARC_INFO
Semi-major_Axis: 6370997.0
Semiminor Axis: 6370997.0
Denominator_of_Flattening_Ratio/Inverse Flattening: 0.0
Entity_and_Attribute_Information:
Detailed_Description:
Entity_Type:
Entity_Type_Label: North American 2021 Mangroves Distribution
Entity_Type_Definition:
Vector polygons representing Mangroves areas in North America.
Entity_Type_Definition_Source:
<See Datasets section>
Attribute:
Attribute_Label: FID
Attribute_Definition: Unique identifier for each polygon.
Attribute_Definition_Source: Automatically generated
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 34630
Attribute:
Attribute_Label: COUNTRY
Attribute_Definition: Country.
Attribute_Definition_Source: Country of location of each polygon (CAN: Canada, USA: United States of America, MEX: Mexico). CEC 2005.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (see table below)
Enumerated_Domain_Value_Definition:
>----------------------------------------------------------------
> MEX
> USA
Reference:
Commission for Environmental Cooperation (2005) Guidelines for Geo-spatial data for Compatibility with the North American Atlas Framework. CEC: Montreal pp.5-11
Attribute:
Attribute_Label: STATEABB
Attribute_Definition: State or Province.
Attribute_Definition_Source: State or province code defining the location of each polygon (two letters country code + two letters state/province code).
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (see table below)
Enumerated_Domain_Value_Definition:
>----------------------------------------------------------------
> MX-BCN
> MX-BCS
> MX-CAM
> MX-CHP
> MX-COL
> MX-GRO
> MX-JAL
> MX-MIC
> MX-NAY
> MX-OAX
> MX-ROO
> MX-SIN
> MX-SON
> MX-TAB
> MX-TAM
> MX-VER
> MX-YUC
> US-FL
> US-LA
> US-TX
See complete list in:
Commission for Environmental Cooperation (2005) Guidelines for Geo-spatial data for Compatibility with the North American Atlas Framework. CEC: Montreal pp.5-11
Attribute:
Attribute_Label: NAME
Attribute_Definition: Reported Name.
Attribute_Definition_Source: Name of the features described by each polygon, as reported by the source of each dataset.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (see table below)
Enumerated_Domain_Value_Definition:
>----------------------------------------------------------------
> Disturbed Mangrove
> Mangrove
Attribute:
Attribute_Label: INPT_SRCE
Attribute_Definition: Input Source.
Attribute_Definition_Source: Description of the original dataset used to acquire each polygon.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (see table below)
Enumerated_Domain_Value_Definition:
>----------------------------------------------------------------
> National Commission for the Knowledge and Use of Biodiversity (CONABIO)
> UN Environment Programme World Conservation Monitoring Centre (UNEP-WCMC)
Attribute:
Attribute_Label: YEAR_PUB
Attribute_Definition: Year of Publication.
Attribute_Definition_Source: Year of the publication of the last update of the dataset used as input.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (see table below)
Enumerated_Domain_Value_Definition:
>----------------------------------------------------------------
> 2015
> 2021
Attribute:
Attribute_Label: RESP_PARTY
Attribute_Definition: Responsible Party.
Attribute_Definition_Source: Name of the entity responsible on providing each dataset.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (see table below)
Enumerated_Domain_Value_Definition:
>----------------------------------------------------------------
> Giri et al., 2011
> MEX: National Commission for the Knowledge and Use of Biodiversity (CONABIO)
Attribute:
Attribute_Label: YEAR_ORGN
Attribute_Definition: Year of Origin.
Attribute_Definition_Source: Year of origin of data reported by the source of each dataset (this can be year when data was taken or when the data was originally published by the source).
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (see table below)
Enumerated_Domain_Value_Definition:
>----------------------------------------------------------------
> 2011
> 2020
Attribute:
Attribute_Label: SURVEY_MET
Attribute_Definition: Survey Method.
Attribute_Definition_Source: Reported method of data acquisition as reported by the source of each dataset.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (see table below)
Enumerated_Domain_Value_Definition:
>----------------------------------------------------------------
> Remote Sensing
Attribute:
Attribute_Label: SCAL_RPRTD
Attribute_Definition: Scale Reported.
Attribute_Definition_Source: Scale of the input data used in each polygon or general dataset as reported by the source.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (see table below)
Enumerated_Domain_Value_Definition:
>----------------------------------------------------------------
> 1:50,000
> Not Reported
Attribute:
Attribute_Label: RESL_RPRTD
Attribute_Definition: Resolution Reported.
Attribute_Definition_Source: Resolution of the input data used in each polygon or general dataset as reported by the source.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (see table below)
Enumerated_Domain_Value_Definition:
>----------------------------------------------------------------
> 30 m
> Not Reported
Attribute:
Attribute_Label: SOURCE_DES
Attribute_Definition: Source Description.
Attribute_Definition_Source: General description of the source dataset used to derive each polygon.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (see table below)
Enumerated_Domain_Value_Definition:
>----------------------------------------------------------------
> Distribution and extension of the disturbed mangrove cover across Mexico in 2020, obtained from an interdependent classification method. A set of 94 ESA Sentinel-2 satellite constellation images were used, January-May 2020.
> Distribution and extension of the mangrove cover across Mexico in 2020, obtained from an interdependent classification method. A set of 94 ESA Sentinel-2 satellite constellation images were used, January-May 2020.
> This dataset shows the global distribution of mangrove forests, derived from earth observation satellite imagery. The dataset was created using Global Land Survey (GLS) data and the Landsat archive.
Attribute:
Attribute_Label: CITATION
Attribute_Definition: Full citation of the used data source.
Attribute_Definition_Source: Modified APA 7th citation style to fit in a maximum of 254 characters.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (see table below)
Enumerated_Domain_Value_Definition:
>----------------------------------------------------------------
> CONABIO (2021) ‘Distribución de los manglares en México en 2020’, 1:50,000, Ed. 1. Comisión Nacional para el Conocimiento y Uso de la Biodiversidad - Sistema de Monitoreo de los Manglares de México (SMMM), Mexico City, Mexico.
> CONABIO (2021) ‘Distribución de manglar perturbado de México en 2020’, 1:50,000, Ed. 1. Comisión Nacional para el Conocimiento y Uso de la Biodiversidad - Sistema de Monitoreo de los Manglares de México (SMMM), Mexico City, Mexico.
> Giri, C. et al. (2011) ‘Status and distribution of mangrove forests of the world using earth observation satellite data’, Global Ecology and Biogeography, 20 (1), pp. 154–159.
Attribute:
Attribute_Label: SOURCE_ID
Attribute_Definition: Identification code of the datasets reported in the data sources full description document.
Attribute_Definition_Source: Assigned by the GIS consultant
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: SM_01
Range_Domain_Maximum: SM_03
Attribute:
Attribute_Label: AREA_SQMT
Attribute_Definition: The size of the shape in square meters.
Attribute_Definition_Source: ESRI
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 795.823
Range_Domain_Maximum: 1165690000
Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: Commission for Environmental Cooperation
Contact_Address:
Address_Type: Mailing and physical address
Address: 700 de la Gauchetière St. West, Suite 1620
City: Montreal
State_or_Province: Quebec
Postal_Code: H3B 5M2
Country: Canada
Contact_Voice_Telephone: 1 514 350 4300
Contact_Facsimile_Telephone: 1 514 350 4314
Contact_Electronic_Mail_Address: info@cec.org
Distribution_Liability:
Although these data have been processed successfully on a computer system
at the Commission for Environmental Cooperation, no warranty expressed or
implied is made by the CEC regarding the utility of the data on any other
system, nor shall the act of distribution constitute any such warranty.
No responsibility is assumed by CEC in the use of these data.
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: ESRI Shapefile
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name: http://www.cec.org/north-american-environmental-atlas/
Metadata_Reference_Information:
Metadata_Date(YYYYMMDAY): 20210425
Metadata_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: Commission for Environmental Cooperation
Contact_Address:
Address_Type: Mailing and physical address
Address: 700 de la Gauchetière St. West, Suite 1620
City: Montreal
State_or_Province: Quebec
Postal_Code: H3B 5M2
Country: Canada
Contact_Voice_Telephone: 1 514 350 4300
Contact_Facsimile_Telephone: 1 514 350 4314
Contact_Electronic_Mail_Address: info@cec.org
Metadata_Standard_Name:
FGDC Content Standard for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Access_Constraints: None
Metadata_Use_Constraints: None