Threatened plants on the Bradshaw Field training area : final report on 2007 survey
Details:
Title
Threatened plants on the Bradshaw Field training area : final report on 2007 survey,
Other title
prepared by I.D. Cowie & B.M. Stuckey,
Creator
Northern Territory. Dept. Of Natural Resources, Environment And The Arts,
Cowie, I. D.,
Stuckey, B. M.,
Collection
E-Publications,
E-Books,
PublicationNT,
Date
2008-04-01,
Description
The aim of this survey was to inform the status of taxa of conservation significance on BFTA so that conservation priorities could be set and recommendations for management made. The area was considered relatively poorly known for assessment of species status against IUCN criteria with a density of 1 survey point per 45 km2 - insufficient to detect or adequately survey species with small ranges or Area of Occupancy. Data were collected on population sizes, distribution and threats. Fifty three taxa of conservation significance (threatened, near threatened, data deficient or not evaluated) are considered in this report with 39 surveyed in the field. The highest priority in survey was given to listed threatened species and others with restricted ranges or very specific habitat requirements as these were considered most likely to be assigned a higher conservation code in future.
Fire regimes (for obligate-seeding sandstone shrubs and dry vine thicket spp.) and potential site disturbance (for very restricted species) were the most important management issues identified. Most species of conservation significance occured on or in association with the three major sandstone plateau areas on BFTA. Burning and fire management of these areas needs to be undertaken in accordance with recommendations and procedures developed in consultation with Bush Fires Council of NT. Conclusions and recommendations relating to particular groups of species were:
Obligate-seeding Sandstone Shrubs
Dry Vine Thicket Species
Very Restricted Species (known from two or less localities in NT)
To better inform the status of these species and threats to them, further survey of Area of Occupancy (AOO), Extent of Occurrence (EOO), population size, the role of fire and other ecological processes are the highest priorities. As plausible lower bound estimates were used in assigning codes, as recommended by IUCN, estimates of key population parameters are likely to be revised upwards by future work in many instances. The highest priority for further survey are regarded as: Portulaca sp. Smooth seed, Boronia gravicocca, Heliotropium cupressinum, Hibiscus fryxellii, Rhynchosia filiformis, Tephrosia procera, Triumfetta sp. Fleshy, and T. sp. Bradshaw.,
Made available via the Publications (Legal Deposit) Act 2004 (NT).,
Plants,
Plants -- Effect of fires on,
Northern Territory,
Bradshaw Field Training Area (N.T.),
Effect of fires on,
Fire management -- Northern Territory,
Fire management,
Publisher name
Dept. of Natural Resources, Environment and the Arts,
Place of publication
Darwin,
Format
v, 145 p. : col. ill. ; 30 cm.,
File type
application/pdf.,
Copyright owner
Check within Publication or with content Publisher.,