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040 a| EJBc| EJBd| GPOd| MvI;

042 a| pcc;

043 a| n-us-va;

049 a| ERE#;

074 a| 0624-B-02 (online);

086 0 a| I 19.42/4-4:2005-5259;

245 00 a| Predicting the vulnerability of streams to episodic acidification and potential effects on aquatic biota in Shenandoah National Park, Virginia /c| by Karen C. Rice ... [et al.] ; prepared in cooperation with National Park Service.;

260 a| Reston, Va. :b| U.S. Dept. of the Interior, U.S. Geological Survey,c| 2006.;

300 a| vii, 51 p. :b| digital, PDF file;

336 a| textb| txt2| rdacontent;

337 a| computerb| c2| rdamedia;

338 a| online resourceb| cr2| rdacarrier;

490 1 a| Scientific investigations report ;v| 2005-5259;

538 a| Mode of access: Internet at the USGS web site. Address as of 8/18/08: http://pubs.usgs.gov/sir/2005/5259/sir05%5F5259.pdf ; current access is available via PURL.;

500 a| Title from title screen (viewed on Oct. 1, 2007).;

500 a| GPO Cataloging Record Distribution Program (CRDP).;

504 a| Includes bibliographical references (p. 35-37).;

520 a| Acidic deposition is one of the most serious environmental problems affecting Shenandoah National Park in north-central Virginia. The park is the third most contaminated park in the National Park System because of the deposition of acid rain. Acid rain affects headwater streams in the park by temporarily reducing the acid-neutralizing capacity (ANC) of the water, a process termed episodic acidification. In turn, the increase in acidic components in streamwater can have deleterious effects on the aquatic biota. Although acidic deposition to the park is relatively uniform across its land area, the water-quality response of streamwater during rain events varies substantially. This response is a function of the underlying geology and topographic attributes of watersheds. Geologic and topographic data for the park's 231 watersheds are readily available; however, long-term (years and tens of years) measurements of streamwater ANC and accompanying discharge are not and would be prohibitively expensive to collect. Modeled predictions of the vulnerability of the park's streams to episodic acidification are an alternative to long-term water-quality monitoring. These predictions can aid park officials in making management decisions.;

650 0 a| Acid depositionz| Virginiaz| Shenandoah National Park.=| ^A147895;

650 0 a| Water quality biological assessmentz| Virginiaz| Shenandoah National Park.=| ^A361401;

700 1 a| Rice, Karen C.=| ^A433083;

710 1 a| United States.b| National Park Service.=| ^A23284;

710 2 a| Geological Survey (U.S.)=| ^A964818;

776 1 t| Predicting the vulnerability of streams to episodic acidification and potential effects on aquatic biota in Shenandoah National Park, Virginiah| vii, 51 p.w| (OCoLC)65167681;

830 0 a| Scientific investigations report ;v| 2005-5259.=| ^A580890;

856 40 u| https://purl.fdlp.gov/GPO/LPS100181;

949 a| Click on web addressw| asish| joyner94;

596 a| 1;

998 a| 1398376;

999 a| CLICK ON WEB ADDRESSw| ASISc| 1i| MQ2606440l| JNETm| JOYNERr| Ys| Yt| JNE1DOu| 9/17/2008x| EDOCUMENTz| JERESOURCEo| .STAFF. 0;

Predicting the vulnerability of streams to episodic acidification and potential effects on aquatic biota in Shenandoah National Park, Virginia / by Karen C. Rice ... [et al.] ; prepared in cooperation with National Park Service.

Other author	Rice, Karen C.
Other author	United States. National Park Service.
Other author	Geological Survey (U.S.)
Format	Electronic
Publication Info	Reston, Va. : U.S. Dept. of the Interior, U.S. Geological Survey, 2006.
Description	vii, 51 p. : digital, PDF file
Supplemental Content	https://purl.fdlp.gov/GPO/LPS100181
Subjects	Acid deposition--Virginia. --Shenandoah National Park. Water quality biological assessment--Virginia. --Shenandoah National Park. Water--Pollution potential. --Virginia. --Shenandoah National Park.

Series	Scientific investigations report ; 2005-5259 Scientific investigations report ; 2005-5259. ^A580890
Abstract	Acidic deposition is one of the most serious environmental problems affecting Shenandoah National Park in north-central Virginia. The park is the third most contaminated park in the National Park System because of the deposition of acid rain. Acid rain affects headwater streams in the park by temporarily reducing the acid-neutralizing capacity (ANC) of the water, a process termed episodic acidification. In turn, the increase in acidic components in streamwater can have deleterious effects on the aquatic biota. Although acidic deposition to the park is relatively uniform across its land area, the water-quality response of streamwater during rain events varies substantially. This response is a function of the underlying geology and topographic attributes of watersheds. Geologic and topographic data for the park's 231 watersheds are readily available; however, long-term (years and tens of years) measurements of streamwater ANC and accompanying discharge are not and would be prohibitively expensive to collect. Modeled predictions of the vulnerability of the park's streams to episodic acidification are an alternative to long-term water-quality monitoring. These predictions can aid park officials in making management decisions.
General note	Title from title screen (viewed on Oct. 1, 2007).
General note	GPO Cataloging Record Distribution Program (CRDP).
Bibliography note	Includes bibliographical references (p. 35-37).
Technical details	Mode of access: Internet at the USGS web site. Address as of 8/18/08: http://pubs.usgs.gov/sir/2005/5259/sir05%5F5259.pdf ; current access is available via PURL.
GPO item number	0624-B-02 (online)
Govt. docs number	I 19.42/4-4:2005-5259

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Predicting the vulnerability of streams to episodic acidification and potential effects on aquatic biota in Shenandoah National Park, Virginia / by Karen C. Rice ... [et al.] ; prepared in cooperation with National Park Service.

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