Global Intertidal Change (1984-2016)

The intertidal environment is one of the last remaining unmapped coastal ecosystems on Earth. Here we present an analysis of over 700,000 satellite images that maps the global extent of and change in tidal flats over the course of 33 years (1984–2016). About 70% of the global extent of tidal flats is found in three continents (Asia (44% of total), North America (15.5% of total) and South America (11% of total)), with 49.2% being concentrated in just eight countries (Indonesia, China, Australia, the United States, Canada, India, Brazil and Myanmar). For regions with sufficient data to develop a consistent multi-decadal time series—which included East Asia, the Middle East and North America—we estimate that 16.02% (15.62–16.47%, 95% confidence interval) of tidal flats were lost between 1984 and 2016. Extensive degradation from coastal development, reduced sediment delivery from major rivers, sinking of riverine deltas, increased coastal erosion and sea-level rise signal a continuing negative trajectory for tidal flat ecosystems around the world.<br><br> For complete information please see: <a href="http://dx.doi.org/10.1038/s41586-018-0805-8"target="_blank">Murray N. J., Phinn S. R., DeWitt M., Ferrari R., Johnston R., Lyons M. B., Clinton N., Thau D. & Fuller R. A. (2019) The global distribution and trajectory of tidal flats. Nature. 565:222-225</a><br/><br>or visit the<br/><br><a href="https://www.intertidal.app/home"target="_blank">Global Intertidal Change</a> website.<br/>

Simple

Date ( Publication )
2019-01-10
Status
Completed
Originator
- Nick Murray ( )

Maintenance and update frequency
As needed
Keywords ( Theme )
  • Marine
  • Intertidal
  • Mud flats
  • Development
Keywords ( Place )
  • World
Access constraints
License
Use constraints
License
Other constraints
https://creativecommons.org/licenses/by/4.0/
Spatial representation type
Grid
Metadata language
en
Character set
UTF8
Topic category
  • Environment
Begin date
1984-01-01
End date
2016-12-31
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Reference system identifier
EPSG:4326
Number of dimensions
2
Dimension name
Row
Resolution
0.000269494585236  degree
Dimension name
Column
Resolution
0.000269494585236  degree
Cell geometry
Area
Transformation parameter availability
Yes
Distribution format
  • GeoTiff ( Not Set )

OnLine resource
WMS link ( OGC:WMS-1.3.0-http-get-map )
OnLine resource
Source data ( WWW:LINK-1.0-http--link )
OnLine resource
Source home page ( WWW:LINK-1.0-http--link )
Hierarchy level
Dataset
Statement
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Metadata

File identifier
c45e932b-a0c4-437c-9375-5feda7b87b51 XML
Metadata language
en
Character set
UTF8
Date stamp
2019-06-11T11:39:01
Metadata standard name
ISO 19115:2003/19139
Metadata standard version
1.0
Point of contact
UN Environment-GRID Geneva - Antonio Benvenuti ( )

 
 

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Keywords

Development Intertidal Marine Mud flats

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