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GIS (Geographic Information Systems)
The projects outlined in this section are those relating to functional aspects of the collection. They address major problems or they create new ways to make use of the collection given today's technology and today's research needs.
In the past, access to specimens was difficult and the collection was underappreciated and underutilized. Different catalogue methodologies in each collection led to there being no easy method to locate a specific specimen.
We are addressing these issues with a combination of digitization of catalogs, development of databases (ultimately for internet search to appropriate data fields) and creation of GIS management system of the main repository enabling the databases to be linked to the location of the specimen. Our projects are regularly presented and published.
All literature and catalogs are now housed at NPL on the Pickle Research Campus (PRC). Specimen catalog / specimen label / specimen location information is computer accessible. All catalogs are also scanned and may be viewed for genuine research needs. Loan request forms are available, and may be submitted via the Web.
Many of the specimens derive from sites that are no longer accessible, and are thus irreplaceable. Some of the early collections in Texas came from sites now covered by lakes or destroyed by urban development. Others, such as our modern molluscs, were made prior to industrial pollution and thus provide an unparalleled record against which to compare living assemblages.
Georeferencing collection localities will facilitate use of all collections. Revisiting early type localities has helped to pinpoint those from which no additional specimens can be acquired. Thus immediate conservation methods can be provided to specimens in the irreplaceable category.
Deterioration of specimens
Specimens in the main collection are deteriorating because they are located in a non-climate controlled and dusty structure. Many of the specimens contain iron sulfide (pyrite) which reacts and 'decays' rapidly in the presence of oxygen and water. Some carbonates also will disintegrate due to changes of humidity and when subjected to contact with chemicals released by certain wooden drawers.
A grant from the Institute of Museum and Library Services (IMLS) funded the re-housing of a portion of the Cretaceous collection. Specimens were cleaned and transferred to steel cabinets to protect against humidity, bugs, and dust accumulation. The current NSF grant is addressing the valuable type and figured collection enabling us to better conserve those specimens, to image
them and to georeference their collection localities.
Insects, such as silverfish, destroy sample labels. Silverfish even eat uncovered thin-sections.
All materials that are susceptible to insect attack are moved to the more controlled part of the repository. Old labels are scanned and archived, their place being taken by computer generated labels within mylar sleeves. Ongoing monitoring with traps helps us keep an eye on a difficult problem.
Additions to the collections.
The collections grow slowly but steadily because of the field work efforts of its own staff, specimens contributed by other UT faculty and staff, thesis / dissertation collections made by UTDGS graduate students and research collections from other Texas universities, and specimens donated by private individuals.
TNSC also has a policy of accepting scientifically significant collections from non-UT individuals or institutions that are no longer in a position to care for them. These are referred to as 'orphaned collections'.
Several sponsors have enabled increased field work and improved curation of incoming specimens.
These improvements will eventually be extended to the entire collection. This task will require further support from Federal, State, and private funding agencies, industry, and the general public. Our objective is to keep this fine collection vibrant and active as well as preserving it for future research, and for you and your grandchildren to appreciate.