Data Set Citation:
When using this data, please cite the data package:
NCEAS 9400 : Halpern: Putting ocean wilderness on the map , National Center for Ecological Analysis and Synthesis , and Halpern B. 2007.
Ranking and mapping the impact of human activities on global ocean ecosystems
nceas.334.2 (https://knb.ecoinformatics.org:443/knb/metacat/nceas.334.2/nceas)
General Information:
Title:Ranking and mapping the impact of human activities on global ocean ecosystems
Identifier:nceas.334
Abstract:
Conservation prioritization and spatially explicit management of the oceans require high-resolution maps of where human impacts to marine ecosystems occur, yet few such maps exist. Here we synthesize global data on 17 threats and 14 marine ecosystems to produce a global, 1km2 resolution map of human impacts specific to each marine ecosystem. We found that none of the ocean is unaffected by humans but that a relatively small fraction is heavily impacted, and that results vary greatly by region and ecosystem type. This research is the first such global assessment, providing important guidelines for where conservation action and threat mitigation is most critical to meet global management and conservation goals.
Keywords:None:
  • ocean (place)
GCMD:
  • global (place)
GCMD:
  • marine (theme)
None:
  • marine threat (theme)
None:
  • threat modeling (theme)
None:
  • bathymetry
None:
  • bottom type
None:
  • seamounts (place)
None:
  • pelagic
None:
  • mangroves
None:
  • coral
None:
  • seagrass
None:
  • depth classification
None:
  • ocean acidification
None:
  • terrestrial marine inputs
None:
  • terrestrial fertilizer impact
None:
  • terrestrial pesticide impact
None:
  • terrestrial runnoff impact
None:
  • commercial fishing
None:
  • ocean fishing
None:
  • impervious surface
None:
  • lights at night
None:
  • coastal population pressure
None:
  • sst
None:
  • sea surface temperature
None:
  • uv
None:
  • ports
None:
  • marine pollution
None:
  • oil rig
None:
  • commercial shipping
None:
  • marine impacts
None:
  • plume modeling
None:
  • invasive species
Publication Date:2007-06-15

Involved Parties

Data Set Creators:
Organization:NCEAS 9400 : Halpern: Putting ocean wilderness on the map
Organization:National Center for Ecological Analysis and Synthesis
Individual: Ben Halpern
Organization:National Center for Ecological Analysis and Synthesis
Address:
735 State St.,
Santa Barbara, California 93101 USA
Phone:
805.892.2531 (voice)
Phone:
805.892.2510 (Fax)
Email Address:
halpern@nceas.ucsb.edu
Data Set Contacts:
Individual: Ben Halpern
Organization:National Center for Ecological Analysis and Synthesis
Address:
735 State St.,
Santa Barbara, California 93101 USA
Phone:
805.892.2531 (voice)
Phone:
805.892.2510 (Fax)
Email Address:
halpern@nceas.ucsb.edu
Associated Parties:
Individual: Shaun Walbridge
Individual: Colin Ebert
Metadata Providers:
Individual: Colin Ebert

Data Set Characteristics

Geographic Region:
Geographic Description:Global coverage at 1km2 resolution
Bounding Coordinates:
West:  -180.0000  degrees
East:  180.0000  degrees
North:  90.0000  degrees
South:  -90.0000  degrees
Time Period:
Date:
2002-01-01

Sampling, Processing and Quality Control Methods

Step by Step Procedures
Step 1:  
Description:

Model Methods

The marine threats model uses a weighting matrix based upon expert surveys to weight each of the threats against each of the ecosystems in a giant multiplication based algorithm. There are several of these matrices and two sets of each data, normalized in two different ways. please contact for more detailed methods information.

Sampling Area And Frequency:
This data is a composite of several data layers including some that have running means for over 20 years, and some that are single snapshots. The extent is global in scope, incorporating all oceans and every continent except Antarctica. Please contact for more detailed information.
Sampling Description:
Globe at 1km2

Data Set Usage Rights

Obtain permission from data set owner(s)
Access Control:
Auth System:knb
Order:denyFirst
Metadata download: Ecological Metadata Language (EML) File