Dugong relative density and distribution
James Cook University

Dataset credit

Alana Grech and Helene Marsh, School of Earth and Environmental Sciences, James Cook University

Contacts

RoleNameOrganization 
Primary contact Alana Grech James Cook University
Data entry Ei Fujioka Duke University

Citation

Abstract

Information collected from dugong aerial surveys in Australian waters conducted since the mid 1980's provide empirical data on patterns of dugong distribution and abundance. In conjunction with geostatistical techniques, including universal kriging, aerial survey information was used to develop a spatially-explict model of dugong relative density and distribution calculated at a grid size of 2km × 2km.

Purpose

Spatially-explicit population models are an important component of species conservation management. The dugongs range is large, complex and dynamic and extends over multiple jurisdictions. Models of dugong relative density and distribution in Australian waters were developed to inform government agencies and other interested parties on the suitability of various managment regimes, including the design of area closures.

Supplemental information

Per request by the data provider, point observations are not included. Please contact the data provider if you wish to obtain them. Due to the lack of point observations, some features on the Dataset Detail are not available.

The model outputs (dugong density and conservation values) are downloadable. Switch to [Download] tab and click "Get this data as ESRI shapefile." They are in fact rasters. Refer to the reference for more detail.

References

Grech, A. and M. Helene. 2007. Prioritising areas for dugong conservation in a marine protected area using a spatially explicit population model. Applied GIS. Volume 3, Number 2.

Attributes

Overview

Attributes described below represent those in the original dataset provided by the provider.
Only minimum required attributes are visible and downlodable online. Other attributes may be obtained upon provider's permission unless otherwise noted below.

Per request by the data provider, point observations are not included. Please contact the data provider if you wish to obtain them. The following column entries do not reflect the actual data structure.

Attributes in dataset provided

Attribute (table column)Description
obs_datedefinition not provided
obs_timedefinition not provided
latitudedefinition not provided
longitudedefinition not provided
speciesdefinition not provided
sp_tsndefinition not provided
obs_countdefinition not provided
geomdefinition not provided
oiddefinition not provided
OBIS-SEAMAP ID481
Seabirds0
Marine mammals1
Sea turtles0
Rays and sharks0
Other species0
Non spatial0
Non species0
Total1
Date, Begin2008-11-11
Date, End2008-11-11
Temporal prec.111000
Latitude-28.50 - -8.10
Longitude134.50 - 153.10
Coord. prec.6 decimal digits
PlatformPlane
Data type
EffortN/A
Registered2008-11-21
Updated2008-11-21
StatusPublished
Sharing policy CC-BY-NC (Minimum)
Also availalbe from iOBIS
See metadata in static HTML
See metadata in FGDC XML
See download history / statistics
1