Integrated Conservation Value

Find further information on the Conservation of Freshwater Ecosystem Values (CFEV) Program and its data at www.dpipwe.tas.gov.au/cfev.

Attribute data

TitleIntegrated Conservation Value (ICV)

CustodianWater and Marine Resources Division, Department of Primary Industries, Parks, Water and Environment

CreatorGIS Unit, Information and Land Services Division, Department of Primary Industries and Water

DescriptionRanking of relative conservation value (including Special Values) for Tasmania’s freshwater-dependent ecosystems

Column headingES_ICV, KT_ICV, SM_ICV, RS_ICV, WB_ICV, WL_ICV

Input data

  1. CFEV Representative Conservation Value (RCV) attribute data
  2. CFEV Special Values (SV) attribute data

Lineage

ICV is a comprehensive, relative conservation value of freshwater-dependent ecosystems in Tasmania derived by integrating RCV and SV status. Rules for assigning the ecosystem spatial units with an ICV rating were developed by the CFEV Technical Management Group and are outlined below.

Data limitations

ICV is a highly derived ranking that inherits all the data limitations of the derivation processes and input data.

Date createdMarch 2005

Scale and coverage1:25 000; Statewide

Type of dataCategorical

Number of classes4

Assigning values to ecosystem spatial units

The ICV class (Very High - VH, High - H, Moderate - M or Lower - L) was assigned to estuary, karst, saltmarsh, river, waterbody and wetland spatial units based on the assigned RCV (e.g. RS_RCV) and modified depending upon the SVs present (e.g. RS_SVDIV, SV_OUTSV, SV_NONSV, SV_UNDIFSV. The rules are given in Table 1. For example, if a given spatial unit, RCV is rated as class A and there are multiple outstanding (see Section 12.2 of the CFEV Project Technical Report) SV records present, then ICV is Very High).

Table 1. ICV rule set, (L = Lower, M = Moderate, H = High, VH = Very High).

RCV

SVs

ICV

A

Multiple outstanding SVs present

VH

A

Single outstanding SV present

VH

B

Multiple outstanding SVs present

VH

C

Multiple outstanding SVs present

VH

A

Multiple non-outstanding SVs or multiple undifferentiated SVs present

H

A

Single non-outstanding SV or single undifferentiated SV present

H

A

No known SVs present

H

B

Single outstanding SV present

H

B

Multiple non-outstanding SVs or multiple undifferentiated SVs present

H

C

Single outstanding SV present

H

B

Single non-outstanding SV or single undifferentiated SV present

M

B

No known SVs present

M

C

Multiple non-outstanding SVs or multiple undifferentiated SVs present

M

C

Single non-outstanding SV or single undifferentiated SV present

L

C

No known SVs present

L

CFEV assessment framework hierarchy

  1. Estuaries>Conservation evaluation
  2. Karst>Conservation evaluation
  3. Rivers>Conservation evaluation
  4. Saltmarshes>Conservation evaluation
  5. Waterbodies>Conservation evaluation
  6. Wetlands>Conservation evaluation