Hydrogeology, Water Chemistry, and Factors Affecting the Transport of Contaminants in the Zone of Contribution of a Public-Supply Well in Modesto, Eastern San Joaquin Valley, California

2008 ◽  
Author(s):  
Bryant C. Jurgens ◽  
Karen R. Burow ◽  
Barbara A. Dalgish ◽  
Jennifer L. Shelton
Keyword(s):  
Water Chemistry ◽  
San Joaquin Valley ◽  
Factors Affecting ◽  
Public Supply

scholarly journals Factors Affecting Public‐Supply Well Vulnerability in Two Karst Aquifers

Ground Water ◽  
2014 ◽  
Vol 52 (S1) ◽  
pp. 63-75 ◽  
Author(s):  
MaryLynn Musgrove ◽  
Brian G. Katz ◽  
Lynne S. Fahlquist ◽  
Christy A. Crandall ◽  
Richard J. Lindgren
Keyword(s):  
Karst Aquifers ◽  
Factors Affecting ◽  
Public Supply

A STATISTICAL APPROACH TO ASSESS FACTORS AFFECTING WATER CHEMISTRY USING MONITORING DATA

1988 ◽  
Vol 24 (5) ◽  
pp. 1017-1026 ◽  
Author(s):  
Frederick M. Fisher ◽  
Kenneth L. Dickson ◽  
John H. Rodgers ◽  
Keith Anderson ◽  
John Slocomb
Keyword(s):  
Water Chemistry ◽  
Statistical Approach ◽  
Monitoring Data ◽  
Factors Affecting

Factors affecting water chemistry of alpine lakes

1995 ◽  
Vol 57 (1) ◽  
pp. 81-89 ◽  
Author(s):  
A. Marchetto ◽  
R. Mosello ◽  
R. Psenner ◽  
G. Bendetta ◽  
A. Boggero ◽  
...  
Keyword(s):  
Water Chemistry ◽  
Alpine Lakes ◽  
Factors Affecting

scholarly journals Survival and Habitat use of Mallard (Anas Platyrhynchos) Broods in the San Joaquin Valley, California

The Auk ◽  
2007 ◽  
Vol 124 (4) ◽  
pp. 1305-1316 ◽  
Author(s):  
Michael P. Chouinard ◽  
Todd W. Arnold
Keyword(s):  
Anas Platyrhynchos ◽  
Central Valley ◽  
San Joaquin Valley ◽  
Hatching Date ◽  
Moist Soil ◽  
Breeding Area ◽  
Seasonal Wetlands ◽  
Factors Affecting ◽  
Duckling Survival ◽  
Soil Units

Abstract The Central Valley of California is an important breeding area for Mallards (Anas platyrhynchos), but estimating recruitment rates for this population has been hampered by lack of data on duckling survival. To gain a better understanding of factors affecting brood and duckling survival, we radiomarked 56 brood hens and 112 ducklings (two per brood) on two actively managed wetland complexes in the San Joaquin Valley during 1996-1997. Total brood mortality was extensive, affecting 27 of 53 broods (51%). Survival of individual ducklings from hatching until 30 days of age was 24.8% (95% confidence interval: 0.178–0.335), with most mortality resulting from predation during the first 12 days of life. Survival differed between years and study areas but was unaffected by hatching date. Broods preferred reverse-cycle seasonal wetlands to more permanent wetlands throughout their first 30 days of life, and ducklings also had higher 2- to 30-day survival probabilities in reverse-cycle wetlands (x̄ ± SE = 0.755 ± 0.095) than in semipermanent-permanent wetlands (0.189 ± 0.056) or moist-soil units (0.173 ± 0.067). We recommend that waterfowl managers in the Central Valley provide reverse-cycle seasonal wetlands during the broodrearing period to enhance survival of locally breeding Mallards. Supervivencia y Uso de Hábitat por Nidadas de Anas platyrhynchos en el Valle de San Joaquín, California

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