Global Marine Species Patterns (55km)

Global patterns of richness and average rarity for marine species, derived from habitat suitability indices from species distribution models. Cells have been clipped to GADM 3.6 coastline, and grid cells without ocean are not included.

This feature layer shows global patterns of richness and rarity for marine mammals and fishes. Values are summarized within an equal-area grid, with a grid cell area of ~3,025 km2 (approximately 55 km x 55 km in the tropics). This cell size represents the finest resolution at which currently available range map data can be used to accurately infer species presence without further habitat modeling (Hurlbert & Jetz, 2007).

Species rarity in this case refers to “average range-size rarity”, also called “range size rarity.” It is the average of the inverse global range sizes of species predicted to occur in a grid cell. Here rarity is expressed as a percentile (1-100%) from low to high.

Species richness is the number of species ranges estimated to overlap in each cell. Counts of species by taxa occurring in each grid cell are expressed as a percentile (1-100%) from low to high.

Layer attributes include average rarity of marine fish (Species rarity: fish) and mammal (Species rarity: mammals) species, marine fish (Species richness: fish) and mammal (Species richness: mammals) species richness, and average rarity (Species richness: all taxa) and richness (Species richness: all taxa) for both taxonomic groups. All values are expressed as percentiles (1-100%) from low to high. 

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Additional Info

Field Value
Last Updated March 24, 2026, 21:07 (UTC)
Created March 24, 2026, 21:07 (UTC)
Domain / Topic
Domain or topic of the dataset being cataloged.
Title
Title for the Dataset.
Global Marine Species Patterns (55km)
Description
A description of the dataset.

Global patterns of richness and average rarity for marine species, derived from habitat suitability indices from species distribution models. Cells have been clipped to GADM 3.6 coastline, and grid cells without ocean are not included.

This feature layer shows global patterns of richness and rarity for marine mammals and fishes. Values are summarized within an equal-area grid, with a grid cell area of ~3,025 km2 (approximately 55 km x 55 km in the tropics). This cell size represents the finest resolution at which currently available range map data can be used to accurately infer species presence without further habitat modeling (Hurlbert & Jetz, 2007).

Species rarity in this case refers to “average range-size rarity”, also called “range size rarity.” It is the average of the inverse global range sizes of species predicted to occur in a grid cell. Here rarity is expressed as a percentile (1-100%) from low to high.

Species richness is the number of species ranges estimated to overlap in each cell. Counts of species by taxa occurring in each grid cell are expressed as a percentile (1-100%) from low to high.

Layer attributes include average rarity of marine fish (Species rarity: fish) and mammal (Species rarity: mammals) species, marine fish (Species richness: fish) and mammal (Species richness: mammals) species richness, and average rarity (Species richness: all taxa) and richness (Species richness: all taxa) for both taxonomic groups. All values are expressed as percentiles (1-100%) from low to high. 
Tags / Keywords
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Format (CSV, XLS, TXT, PDF, etc)
File format of the dataset.
Dataset Size
Dataset size in megabytes.
684520.0
Metadata Identifier
Metadata identifier – can be used as the unique identifier for catalogue entry
Published Date
Published date of the dataset.
2021-03-25
Time Period Data Span (start date)
Start date of the data in the dataset.
Time Period Data Span (end date)
End date of time data in the dataset.
GeoSpatial Area Data Span
A spatial region or named place the dataset covers.
Field Value
Access category
Type of access granted for the dataset (open, closed, service, etc).
public
License
License used to access the dataset.
You may not distribute, modify, transmit, reuse, repost, copy, or use this content, whether in whole or in part, for commercial purposes or for personal gain, without express advance written permission from Map of Life. The data are and will remain the exclusive property of Map of Life, Yale University, and its licensors. These data are protected by copyright, trademark, and other laws of both the United States and foreign countries. Map of Life trademarks and trade dress may not be used in connection with any product or service without the prior written consent of Map of Life, Yale University.By downloading this data, you agree to defend, indemnify and hold harmless Map of Life, Yale University and its licensee and licensors, and their employees, contractors, agents, officers and directors, from and against any and all claims, damages, obligations, losses, liabilities, costs or debt, and expenses (including but not limited to attorney's fees), resulting from or arising out of a) your use and access of the data, by you or any person using your account and password; b) a breach of these terms, or c) content posted on the platform.Your use of the data is at your sole risk. The data are provided on an "AS IS" and "AS AVAILABLE" basis. The data are provided without warranties of any kind, whether express or implied, including, but not limited to, implied warranties of merchantability, fitness for a particular purpose, non-infringement or course of performance.In no event shall Map of Life, Yale University , nor its directors, employees, partners, agents, suppliers, or affiliates, be liable for any indirect, incidental, special, consequential or punitive damages, including without limitation, loss of profits, data, use, goodwill, or other intangible losses, resulting from (i) your access to or use of or inability to access or use the data; (ii) any conduct or content of any third party on the data; and (iii) unauthorized access, use or alteration of your transmissions or content, whether based on warranty, contract, tort (including negligence) or any other legal theory, whether or not we have been informed of the possibility of such damage, and even if a remedy set forth herein is found to have failed of its essential purpose.For more information, refer to the Map of Life Terms of Service .
Limits on use
Limits on use of data.
Location
Location of the dataset.
https://climate.esri.ca/datasets/bf2862f403b94411ac2428dc9c9bce03
Data Service
Data service for accessing a dataset.
Owner
Owner of the dataset.
MOL_LivingAtlasPublisher
Contact Point
Who to contact regarding access?
Contact Point Email
The email to contact regarding access?
Publisher
Publisher of the dataset.
Publisher Email
Email of the publisher.
Author
Author of the dataset.
MOL_LivingAtlasPublisher
Author Email
Email of the author.
Accessed At
Date the data and metadata was accessed.
2021-05-11
Field Value
Identifier
Unique identifier for the dataset.
bf2862f403b94411ac2428dc9c9bce03
Language
Language(s) of the dataset
English
Link to dataset description
A URL to an external document describing the dataset.
https://climate.esri.ca/datasets/bf2862f403b94411ac2428dc9c9bce03
Persistent Identifier
Data is identified by a persistent identifier.
Globally Unique Identifier
Data is identified by a persistent and globally unique identifier.
Contains data about individuals
Does the data hold data about individuals?
Contains data about identifiable individuals
Does the data hold identifiable data about individual?
Contains Indigenous Data
Does the data hold data about Indigenous communities?
Portal Type
Platform type of the source portal.
Field Value
Version
Version of the datatset
None
Source
Source of the dataset.
None
Version notes
Version notes about the dataset.
Is version of another dataset
Link to dataset that it is a version of.
Other versions
Link to datasets that are versions of it.
Provenance Text
Provenance Text of the data.
Provenance URL
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Temporal resolution
Describes how granular the date/time data in the dataset is.
GeoSpatial resolution in meters
Describes how granular (in meters) geospatial data is in the dataset.
GeoSpatial resolution (in regions)
Describes how granular (in regions) geospatial data is in the dataset.
Field Value
Indigenous Community Permission
Who holds the Indigenous Community Permission. Who to contact regarding access to a dataset that has data about Indigenous communities.
Community Permission
Community permission (who gave permission).
The Indigenous communities the dataset is about
Indigenous communities from which data is derived.
Field Value
Number of data rows
If tabular dataset, total number of rows.
121187
Number of data columns
If tabular dataset, total number of unique columns.
20
Number of data cells
If tabular dataset, total number of cells with data.
2423740
Number of data relations
If RDF dataset, total number of triples.
Number of entities
If RDF dataset, total number of entities.
Number of data properties
If RDF dataset, total number of unique properties used by the triples.
Data quality
Describes the quality of the data in the dataset.
Metric for data quality
A metric used to measure the quality of the data, such as missing values or invalid formats.

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