Western pond turtle (Actinemys marmorata) habitat use was studied in a coastal pond, lagoon, and stream system during the summer of 1995 and 1996 at Waddell Creek, Santa Cruz County, California. Location and habitat association data were recorded for locations and sightings of radio-tagged and un-tagged turtles during the normal active season. Summary comparison of habitat associations and habitat availability provided inference of habitat preference at several habitat scales. For most of the active season the turtles were in relatively sunny aquatic habitat, in deeper, slower velocity water. In addition, the turtles were most commonly associated with exposed and sub-surface woody debris, rooted bank, and branches positioned near the water surface. In the lagoon and stream this was usually associated with the thalweg and along positions just off the bank, where large wood and pool scour was most abundant. Newly placed and relocated floating wood was utilized for basking within days by radio-tagged and untagged turtles. Subsequent data on the basking behavior of a sub-set of radio-tagged turtles was developed with externally attached temperature sensors to chronicle periods when the turtle shell was exposed to sun. A regular pattern of extensive daily basking was identified in all thermistor-fitted turtles. The combination of sunny aquatic habitat with natural structural elements, particularly woody debris, which provided escape cover and basking opportunities, appeared to be the preferred habitat for this species.
|Advisor:||Smith, Jerry J.|
|Commitee:||Hayes, Sean, Messina, Paula, Rajakaruna, Nishanta|
|School:||San Jose State University|
|School Location:||United States -- California|
|Source:||MAI 48/06M, Masters Abstracts International|
|Subjects:||Wildlife Conservation, Ecology, Zoology|
|Keywords:||Actinemys marmorata, Basking, California, Habitat use, Western pond turtle|
Copyright in each Dissertation and Thesis is retained by the author. All Rights Reserved
The supplemental file or files you are about to download were provided to ProQuest by the author as part of a
dissertation or thesis. The supplemental files are provided "AS IS" without warranty. ProQuest is not responsible for the
content, format or impact on the supplemental file(s) on our system. in some cases, the file type may be unknown or
may be a .exe file. We recommend caution as you open such files.
Copyright of the original materials contained in the supplemental file is retained by the author and your access to the
supplemental files is subject to the ProQuest Terms and Conditions of use.
Depending on the size of the file(s) you are downloading, the system may take some time to download them. Please be