Data Set Citation:
When using this data, please cite the data package:
National Center for Ecological Analysis and Synthesis , NCEAS 2290 : Burgman: ExtinctionRisk , Burgman M , and Regan T.
Main causes for discrepancies in species classifications
bowdish.254.13 (https://knb.ecoinformatics.org:443/knb/metacat/bowdish.254.13/nceas)
General Information:
Title:Main causes for discrepancies in species classifications
Identifier:bowdish.254
Abstract:
Decisions about species conservation status have critical implications for allocation of public and private funding, land use planning decisions, and regulatory actions. A broad range of methods are used to classify species conservation status at a variety of geographic scales (e.g., local, national, international). Different methods produce very different results, yet there is no rationale or benchmark for judging their adequacy or appropriateness. Existing systems also are incomplete because they lack rules that allow decisions to be made when the data are uncertain. These tables were part of a NCEAS working group's analysis of these classification methods. The three classifications protocols that these tables look at are: The IUCN Red List criteria, The Heritage method and the Millsap method. They use 18 different assessors that interpret the same data and look at the main causes for discrepancies in species classifications. These tables are part of Tracey Jane Regan's thesis titled, "Evaluation Methods for Estimating Extinction Risk" that was submitted to the School of Botany, January 2004. Tracy was a member of the NCEAS working group titled "Developing and testing methods for classifying species conservation status and estimating risk".
Keywords:
  • Endangered Species
  • Extinction
  • Habitat Conservation Plan
Data Table, Image, and Other Data Details:
Metadata download: Ecological Metadata Language (EML) File
Data Table:IUCNRedList.txt ( View Metadata | Download File download)
Data Table:HeritageMethod.txt ( View Metadata | Download File download)
Data Table:MillsapMethod.txt ( View Metadata | Download File download)

Involved Parties

Data Set Creators:
Organization:National Center for Ecological Analysis and Synthesis
Organization:NCEAS 2290 : Burgman: ExtinctionRisk
Individual: Mark Burgman
Organization:University of Melbourne
Email Address:
markab@unimelb.edu.au
Individual: Tracey Regan
Organization:The University of Melbourne
Email Address:
t.regan@pgrad.unimelb.edu.au
Data Set Contacts:
Individual: Mark Burgman
Organization:University of Melbourne
Email Address:
markab@unimelb.edu.au
Individual: Tracey Regan
Organization:The University of Melbourne
Email Address:
t.regan@pgrad.unimelb.edu.au

Data Set Characteristics

Sampling, Processing and Quality Control Methods

Step by Step Procedures
Step 1:  
Description:

Methods Used

The three classifications protocols that these tables look at are: The IUCN Red List criteria, The Heritage method and the Millsap method. They use 18 different assessors that interpret the same data and look at the main causes for discrepancies in species classifications.

Step 2:  
Description:

Species and Assessors

Thirteen species were chosen to represent a broad spectrum of taxonomic groups and life histories, including vascular plants, birds, invertebrates, mammals, a reptile and a fish. In several cases only an isolated portion of the species total range was considered in the assessment. These include Sp3: Keeled snail; Sp6: Grass tree; Sp7: Florida scrub-jay and Sp12: Desert tortoise. A total of 18 assessors took part in the experiment. Each assessor estimated the parameters for all of the species for each of the three classification protocols. All assessors were ecologists. Their expertise ranged from those who regularly use the classification protocols to assess species, to assessors who were experts with the individual species, and those who had a working knowledge of the protocols and could apply them to data sets. In all cases, the participants had sufficient knowledge that they could do the tasks credibly if they were employed by a government agency.

Data Set Usage Rights

Access Control:
Auth System:knb
Order:denyFirst
Metadata download: Ecological Metadata Language (EML) File