Conservation Management Zones of Australia Swan Coastal Plains Shrublands and Woodlands



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Zone vegetation characteristics


this column graph compares the pre 1750 distribution of native vegetation subgroups with the extant distribution of these vegetation types. analysis is for the all major vegetation subgroups that had an original distribution of greater than 1% of the zone. for eucalyptus open forest with a shrubby understorey, pre 1750 distribution was 8 percent and present day distribution is 2 percent. for eucalyptus woodlands with a shrubby understorey, pre 1750 distribution was 32 percent and present day distribution is 5 percent. for melaleuca open forests and woodlands, pre 1750 distribution was 1 percent and present day distribution is 0.5 percent. for other acacia tall open shrublands and shrublands, pre 1750 distribution was 4 percent and present day distribution is 3 percent. for other shrublands, pre 1750 distribution was 11 percent and present day distribution is 5 percent. for banksia woodlands, pre 1750 distribution was 38 percent and present day distribution is 19 percent. for other grasslands, pre 1750 distribution was 2 percent and present day distribution is 1 percent.

The National Vegetation Information System (NVIS) framework is a nationally consistent vegetation classification system based on vegetation data collected by states and territories. It provides information on the extent and distribution of vegetation types across the Australian landscape.

Two products are used to provide the Zone Vegetation Characteristics graph. A modelled pre-European vegetation distribution (pre-1750), and extant (current extent) vegetation, which is based on contemporary vegetation mapping. The information presented here relates to Major Vegetation Subgroups (MVSs). There are 85 MVS types across Australia, describing the structure and floristic composition of dominant and secondary vegetation stratums (e.g. canopy and mid-storey species). Major Vegetation Subgroups only reflect the dominant vegetation type occurring in an area from a mix of vegetation types. Less-dominant vegetation groups which may also be present are therefore not represented.

It is important to note that the vegetation information is indicative only, as state and territory mapping in Australia is of variable resolution and scale. However, this data is the best available nationally consistent information on vegetation, and the dataset continues to evolve and increase in accuracy.

Analysing this information at Conservation Management Zone, rather than national level provides greater discrimination for decision makers, as clearance levels of vegetation types are not uniform across Australia. For example, eucalypt woodlands with a tussock grass understory is a vegetation type found across Australia. In the Brigalow Woodlands Conservation Management Zone, eucalypt open woodlands with a tussock grass understory originally covered approximately 36% of the zone, but today it only covers only 14.5 % of the zone (58.7% of this vegetation community has been cleared in the Brigalow). In the Northern Australia Tropical Savannah zone, this vegetation type originally occupied 19.6% of the zone. Today, it occupies approximately 19.4% of the zone (only 2.3% of this vegetation type has been cleared). It should be noted that this data only provides an indication of change in extent, and not vegetation condition.

For more information on the National Vegetation Information System (NVIS) please refer to: http://www.environment.gov.au/topics/science-and-research/databases-and-maps/national-vegetation-information-system


Ramsar and Nationally Important Wetlands


Ramsar wetlands

Jurisdiction

Hectares

Becher Point Wetlands

WA

674

Forrestdale and Thomsons Lakes

WA

785

Peel-Yalgorup System

WA

26,665

Vasse-Wonnerup System

WA

1,114

For more information on Ramsar please refer to: http://www.environment.gov.au/topics/water/water-our-environment/wetlands/ramsar-convention-wetlands

Nationally Important Wetlands

Jurisdiction

Hectares

Criteria

Barraghup Swamp

WA

18.76

1, 2, 3, 6

Becher Point Wetlands

WA

0.12

1, 6

Benger Swamp

WA

1,086.71

3, 4, 6

Booragoon Swamp

WA

29.59

1, 2, 3, 6

Brixton Street Swamps

WA

271.63

1, 5, 6

Chandala Swamp

WA

435.83

1, 2, 3, 4, 6

Ellen Brook Swamps System

WA

19.93

1, 3, 4, 5, 6

Forrestdale Lake

WA

0.12

1, 2, 3, 4, 5, 6

Gibbs Road Swamp System

WA

5,833.15

1, 2, 3, 6

Guraga Lake

WA

364.93

1, 2, 3, 4, 6

Herdsman Lake

WA

323.54

2, 3, 4, 6

Joondalup Lake

WA

563.09

1, 2, 4, 6

Karakin Lakes

WA

621.81

2

Lake McLarty System

WA

263.60

1, 2, 3, 4, 6

Lake Thetis

WA

1.21

1, 6

Lancelin Defence Training Area

WA

0.11

1, 2

Loch McNess System

WA

195.14

1, 3, 6

McCarleys Swamp (Ludlow Swamp)

WA

26.10

1, 2, 3, 6

Palmer Barracks, Guildford

WA

0.10

1, 2

Peel-Harvey Estuary

WA

3,236.91

1, 2, 3, 4, 5, 6

Perth Airport Woodland Swamps

WA

192.23

1, 3, 5, 6

RAAF Caversham

WA

0.11

2, 3

Rottnest Island Lakes

WA

137.33

1, 2, 3, 6

Spectacles Swamp

WA

164.52

1, 2, 3, 6

Swan-Canning Estuary

WA

3,726.58

1, 2, 3, 4, 5, 6

Thomsons Lake

WA

236.13

1, 2, 3, 4, 6

Vasse-Wonnerup Wetland System

WA

1,981.53

2, 3, 4, 5, 6

Wannamal Lake System

WA

738.69

2, 3, 4, 5, 6

Yalgorup Lakes System

WA

5,087.37

1, 2, 3, 4, 5, 6

Nationally important wetlands
are defined according to the following criteria:

1.It is a good example of a wetland type occurring within a biogeographic region in Australia.

2.It is a wetland which plays an important ecological or hydrological role in the natural functioning of a major wetland system/complex.

3.It is a wetland which is important as the habitat for animal taxa at a vulnerable stage in their life cycles, or provides a refuge when adverse conditions such as drought prevail.

4.The wetland supports 1% or more of the national populations of any native plant or animal taxa.

5.The wetland supports native plant or animal taxa or communities which are considered endangered or vulnerable at the national level.

6.The wetland is of outstanding historical or cultural significance.

Please note, the above are a subset of all the Nationally Important Wetlands found within the Zone. For more information on Nationally Important Wetlands please see: http://www.environment.gov.au/resource/directory-important-wetlands-australia-third-edition




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