Cell Descriptions - South East Natural Resources Management Board

SE14 – Long Beach
held as a miscellaneous Crown lease. No vegetated areas are protected by heritage agreement or
park status. Upper South East Marine Park extends the length of the cell.
Values/ Uses (Field visits and local reports)
Much of this area is zoned for grazing; with smaller areas of farming and rural residential land in
the south of the cell. Long Beach is used for shore based fishing.
Threats (Field visits and local reports)
ORV tracks are heavy throughout the remnant dunes. Combined with pest plant and animal
threats, the remnant coastal shrubland is degraded and almost non-existent in places. Spiny Rush
(Juncus acutus) is common around the coastal wetlands including Lake Nadzab and the low lying
agricultural land and along road reserves. Discharge of nutrient rich and sediment laden waters
from Blackford Drain is impacting upon nearshore seagrass meadows.
Opportunities
Encourage landholders to exclude ORVs and grazing from coastal dunes and assist landholders
with pest plant and animal control to improve the quality of remnant shrub- and grass-land
communities. Possible opportunity for an investigation into the effects of sea-wheat grass on
beach morphology and fauna impacts. Dune drift and blowouts in the vegetated dunes north of
Blackford Drain could be rehabilitated. Opportunities to redirect flows from Blackford Drain or
polish water via wetlands should be explored.
Conservation Analysis (GIS)
The total of conservation mean values, 73.77 is the lowest in the region. The detailed summary
map is remarkable in that no part of the cell shows a total higher than medium low, and almost
all is low. Habitat for butterflies and for numbers of threatened mammals within the uncleared
dunes, and viewscape in the foredune area show high means. However, it is notable that total
means for layers relating to threatened plant species, for birds and reptile habitat, as well as
Indigenous and European heritage, are extremely low.
Threat Analysis (GIS)
Total for threat summary means is high, 66.09. ORV activity, land ownership, viewscape, land
use, vegetation block degradation, numbers of significant weeds (throughout the cell), dune
instability (a potential threat through much of the cell), numbers of rabbits are high throughout,
are the major contributors to this high total. Dune habitat in the southern half of the cell, noted
in the previous paragraph, is threatened by vegetation block isolation, adjacency of the dump, as
well as ORV activity. Petroleum extraction licences are current for the area south of Blackford
Drain. Existing residential development (and rural residential zoning) poses threats in the south.
Adaptation to Climate Change: Threats for cell SE14
(see also discussion of scenario in Section 4.11
NOTE: the advice below is indicative of likely change and the direction of change, with
implications for ecosystems. Dates, amounts and probabilities cannot be accurately calculated at
this time. Thus advice on flood levels, for example, should not be used in engineering or
development planning.
Limestone Coast and Coorong Coastal Action Plan 444