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Catchment and subcatchment scale lin...

Robinson, Timothy H.

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Catchment and subcatchment scale linkages between land use and nutrient concentrations and fluxes in coastal California streams.

Record Type:	Language materials, printed : Monograph/item
Title/Author:	Catchment and subcatchment scale linkages between land use and nutrient concentrations and fluxes in coastal California streams./
Author:	Robinson, Timothy H.
Description:	329 p.
Notes:	Advisers: Arturo A. Keller; John M. Melack.
Contained By:	Dissertation Abstracts International67-03B.
Subject:	Environmental Sciences. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3208731
ISBN:	9780542573484

Catchment and subcatchment scale linkages between land use and nutrient concentrations and fluxes in coastal California streams.
Robinson, Timothy H.

Catchment and subcatchment scale linkages between land use and nutrient concentrations and fluxes in coastal California streams. - 329 p.

Advisers: Arturo A. Keller; John M. Melack.

Thesis (Ph.D.)--University of California, Santa Barbara, 2006.

Streams draining three coastal watersheds near Santa Barbara, California were studied for three years. Intense winter rains and short steep catchments produced flashy runoff from the dominant land uses, i.e., chaparral, avocado orchards, greenhouse agriculture, open-field nurseries, and residential and commercial development. Samples were analyzed for nitrate, ammonium, dissolved organic nitrogen, and phosphate; and volume-weighted mean annual concentrations ranged from 0.4-130, 6-1500, 8-180, and 2-130 mumol L-1, respectively, between the chaparral and intensive agricultural sites. Concentration and discharged data were converted to nutrient fluxes at a high temporal resolution and aggregated by storm, month, season, and year during water years 2002, 2003, and 2004. Nitrate and phosphate nutrient export coefficient (NEC) models were developed in one watershed and tested in adjacent catchments. Stepwise linear regressions were performed on potential surrogate variables for antecedent soil moisture conditions to create watershed response functions that simulated runoff conditions for low, medium, and high rainfall events; variables included rainfall, runoff, and position in the water year. Nutrient input rates by land use and atmospheric depositions were also evaluated in a parallel modeling approach using fertilizer input data and atmospheric deposition. The nitrate and phosphate models were loosely coupled with an urban growth model (SLEUTH) to predict stream nutrient loading under different urban growth scenarios 50 years into the future. The results showed direct application of the model for agricultural and municipal tailwater and stormwater management.

ISBN: 9780542573484Subjects--Topical Terms:

676987
Environmental Sciences.

Catchment and subcatchment scale linkages between land use and nutrient concentrations and fluxes in coastal California streams.
LDR:02717nam 2200301 a 45 001 965393
005 20110906
008 110906s2006 eng d
020 $a 9780542573484
035 $a (UMI)AAI3208731
035 $a AAI3208731
040 $a UMI $c UMI
100 1 $a Robinson, Timothy H. $3 1288169
245 1 0 $a Catchment and subcatchment scale linkages between land use and nutrient concentrations and fluxes in coastal California streams.
300 $a 329 p.
500 $a Advisers: Arturo A. Keller; John M. Melack.
500 $a Source: Dissertation Abstracts International, Volume: 67-03, Section: B, page: 1332.
502 $a Thesis (Ph.D.)--University of California, Santa Barbara, 2006.
520 $a Streams draining three coastal watersheds near Santa Barbara, California were studied for three years. Intense winter rains and short steep catchments produced flashy runoff from the dominant land uses, i.e., chaparral, avocado orchards, greenhouse agriculture, open-field nurseries, and residential and commercial development. Samples were analyzed for nitrate, ammonium, dissolved organic nitrogen, and phosphate; and volume-weighted mean annual concentrations ranged from 0.4-130, 6-1500, 8-180, and 2-130 mumol L-1, respectively, between the chaparral and intensive agricultural sites. Concentration and discharged data were converted to nutrient fluxes at a high temporal resolution and aggregated by storm, month, season, and year during water years 2002, 2003, and 2004. Nitrate and phosphate nutrient export coefficient (NEC) models were developed in one watershed and tested in adjacent catchments. Stepwise linear regressions were performed on potential surrogate variables for antecedent soil moisture conditions to create watershed response functions that simulated runoff conditions for low, medium, and high rainfall events; variables included rainfall, runoff, and position in the water year. Nutrient input rates by land use and atmospheric depositions were also evaluated in a parallel modeling approach using fertilizer input data and atmospheric deposition. The nitrate and phosphate models were loosely coupled with an urban growth model (SLEUTH) to predict stream nutrient loading under different urban growth scenarios 50 years into the future. The results showed direct application of the model for agricultural and municipal tailwater and stormwater management.
590 $a School code: 0035.
650 4 $a Environmental Sciences. $3 676987
650 4 $a Geochemistry. $3 539092
650 4 $a Hydrology. $3 545716
690 $a 0388
690 $a 0768
690 $a 0996
710 2 0 $a University of California, Santa Barbara. $3 1017586
773 0 $t Dissertation Abstracts International $g 67-03B.
790 $a 0035
790 1 0 $a Keller, Arturo A., $e advisor
790 1 0 $a Melack, John M., $e advisor
791 $a Ph.D.
792 $a 2006
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3208731