Appendix D Terrestrial and Aquatic Biodiversity - Environment ...

(note that conceptual site layout has slightly changed since this map was created, please refer to Figure 11)
Figure 15: Distribution of Psydrax paludosa within the MLA areas
Fimbristylis dolera
Fimbristylis dolera (Data Deficient) is a stout, annual sedge with pithy/spongy stems – see Figure 16.
There are nine records of Fimbristylis dolera in Australian herbaria (Qld 3, NT 6) and two additional records
from plants recorded in the lease area. All NT records are from the Roper and Gulf river catchments.
It is found growing on the edges of swamps and shallowly inundated Melaleuca swamps, vegetation types 17
– Melaleuca viridiflora +/- Asteromyrtus symphyocarpa, Psydrax paludosa Low Open Woodland and 18 –
Melaleuca viridiflora and Asteromyrtus symphyocarpa, +/- Melaleuca citrolens Low Woodland. It was rarely
encountered, with very few plants being found.
Likely effect of mining disturbance on species
There is a portion of suitable habitat of Fimbristylis dolera likely to be affected by the impacts of mining.
While some of the habitat is affected by the direct impact of the pit, haul road, infrastructure and works,
floodplains and swamps downstream of the pit and infrastructure sites may be affected by sedimentation and
changes in surface hydrology. It is also possible that upstream of the pits hydrology could be changed
unless there is careful consideration of the of the landscape features that govern surface drainage, such as
the gaps between the ranges that the creek run through.
As this species is an annual, it may be sensitive to changes in hydrology and sedimentation levels. This
could mean a decline or increase in population depending on the ecology of the species. Some species for
example may benefit from disturbance.
Client: Western Desert Resources Ltd Page 59 of 150
Doc No. DW120004-C0302-EIA-R-0036
Doc Title: Appendix D – Terrestrial Biodiversity Technical Report