Description

Aquatic habitat of the endangered Barton Springs salamander, Eurycea sosorum, in Travis County, Texas can potentially be impacted by contaminants in surface runoff from urbanized areas. This study was conducted to 1 determine types and levels of pydrophobic contaminants in springdischarged sediment in four habitat springs of the salamander during major precipitation events and 2 define timecourse differences in contaminant levels for the four habitat springs during these events. Suspended sediment from the four habitat springs was sampled and analyzed for hydrophobic contaminants after rainstorm events had caused turbid flow at these springs. Soluble pesticides were also sampled from each spring during a single rain event in May 2000. Eight trace metals As, Cd, Cr, Cu, Hg, Ni, Pb, and Zn were present in varying concentrations in suspended sediment samples taken at the four habitat springs. Arsenic and nickel exceeded TELs threshold effects levels on a relative basis for all recorded rainfall events in the springs. Nickel concentrations exceeded a relative PEL probable effects level at least once in all four springs during a rainfall event. Five soluble pesticides atrazine, simazine, metolachlor, diazinon, and prometon were detected in at least one sample from the four springs. Deethylatrazine a degredate of atrazine was also detected. Although these contaminants occurred within salamander habitat during the years of 2000 to 2002 in concentrations that are below lethal dosages for the salamander and its prey, additional analyses should be made on both an acute and chronic basis to ensure that contaminant exposure does not reach concentrations that can impact the salamander or its habitat. In addition, future toxicity testing involving this highly endangered amphibian should include sublethal endpoints such as effects on growth and reproduction.

General Information

• This data is described at

  http://catalog.data.gov/dataset/contaminant-discharge-in-habitat-springs-of-the-barton-springs-salamander-during-storm-rai Do you think this data is incorrect? Let us know

• This data is published by

  US Fish and Wildlife Service, Department of the Interior Do you think this data is incorrect? Let us know

Legal Information

• The rights statement is at

  http://catalog.data.gov/dataset/contaminant-discharge-in-habitat-springs-of-the-barton-springs-salamander-during-storm-rai Do you think this data is incorrect? Let us know

• Outside the US, this data is available under

  Creative Commons CCZero Do you think this data is incorrect? Let us know

• There are

  yes, and the rights are all held by the same person or organisation Do you think this data is incorrect? Let us know

• The content is available under

  Creative Commons CCZero Do you think this data is incorrect? Let us know

• The rights statement includes data about

  its data licence Do you think this data is incorrect? Let us know

• This data contains

  no data about individuals Do you think this data is incorrect? Let us know

Practical Information

• The data appears in this collection

  http://catalog.data.gov/organization/fws-gov Do you think this data is incorrect? Let us know

• The accuracy or relevance of this data will

  go out of date but it is timestamped Do you think this data is incorrect? Let us know

• The data is

  backed up offsite Do you think this data is incorrect? Let us know

Technical Information

• This data is published at

  http://ecos.fws.gov/ServCatFiles/reference/holding/21573?accessType=DOWNLOAD Do you think this data is incorrect? Let us know

• The format of this data is

  a standard open format Do you think this data is incorrect? Let us know

Social Information

• The documentation includes machine-readable data for

  title Do you think this data is incorrect? Let us know

• The documentation includes machine-readable data for

  description Do you think this data is incorrect? Let us know

• The documentation includes machine-readable data for

  identifier Do you think this data is incorrect? Let us know

• The documentation includes machine-readable data for

  landing page Do you think this data is incorrect? Let us know

• The documentation includes machine-readable data for

  publisher Do you think this data is incorrect? Let us know

• The documentation includes machine-readable data for

  keyword(s) or tag(s) Do you think this data is incorrect? Let us know

• The documentation includes machine-readable data for

  distribution(s) Do you think this data is incorrect? Let us know

• The documentation includes machine-readable data for

  release date Do you think this data is incorrect? Let us know

• The documentation includes machine-readable data for

  modification date Do you think this data is incorrect? Let us know

• The documentation includes machine-readable data for

  temporal coverage Do you think this data is incorrect? Let us know

• The documentation about each distribution includes machine-readable data for

  release date Do you think this data is incorrect? Let us know

• The documentation about each distribution includes machine-readable data for

  a URL to access the data Do you think this data is incorrect? Let us know

• The documentation about each distribution includes machine-readable data for

  a URL to download the dataset Do you think this data is incorrect? Let us know

• The documentation about each distribution includes machine-readable data for

  type of download media Do you think this data is incorrect? Let us know

• Find out how to contact someone about this data at

  http://catalog.data.gov/dataset/contaminant-discharge-in-habitat-springs-of-the-barton-springs-salamander-during-storm-rai Do you think this data is incorrect? Let us know

• Find out how to suggest improvements to publication at

  http://www.data.gov/issue/?media_url=http://catalog.data.gov/dataset/contaminant-discharge-in-habitat-springs-of-the-barton-springs-salamander-during-storm-rai Do you think this data is incorrect? Let us know