Abstract |
A database of Tasmanian geological, geomorphological (landform), and pedological (soil) sites, features, areas and systems considered to be of significant conservation, scientific or heritage value. Site values are classified according to formative process into 81 types, which are further subdivided by geological age. Multiple values may be attributed to a site. Values are assigned significance on a five level scale ranging from local to global. Significance is determined by an expert panel, the Tasmanian Geoconservation Database Reference Group, which assesses site nominations on behalf of DPIPWE. Site entries contain a text description, statement of significance, an indication of susceptibility to potential threats, management notes and references amongst other details. Spatial data defining site extent is associated and images are progressively being added. The LIST presents a highly abridged version of the full Natural Values Atlas dataset. The LIST version is updated weekly. |
Lineage Description |
Position accuracy:
Variable, with each record having mandatory fields for mapping method and position accuracy. Sites are mapped as polygons or multipolygons, which may overlap according to the distribution of the values involved. There is a variable level of ground truthing incorporated in this database.
Attribute accuracy:
Generally good but variable, especially in the amount of detail available.
Logical consistency:
All data is checked for duplicate features and coincident features by both visual and automated means. Some duplicate references may be cited due to inconsequential variation in punctuation. Classification and potential threats have been attributed on a case by case basis and may vary amongst otherwise apparently similar features.
Completeness:
The data set covers the entire state of Tasmania however inventory compilation has not been systematic and remains incomplete. There are constantly new sites being identified for inclusion in the database. |