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Your search keyword '"Garcia-Luis, A."' showing total 3 results
Start Over Author "Garcia-Luis, A." Region illinois
3 results on '"Garcia-Luis, A."'

1. Nutrient and Suspended-Sediment Concentrations, Loads, and Yields in Upper Macoupin Creek, Illinois, 2017-21.

Author

Garcia, Luis A., Terrio, Paul J., and Manaster, Adam E.

Subjects
SUSPENDED sediments, NUTRIENT pollution of water, RUNOFF
Abstract

The U.S. Geological Survey, in cooperation with the Macoupin County Soil and Water Conservation District and the American Farmland Trust, undertook a monitoring effort from 2017 to 2021 in the upper Macoupin Creek watershed. The monitoring effort was to determine and characterize nitrogen, phosphorus, and suspended-sediment concentrations, loads, and yields for a 566.7 square kilometer area of the Macoupin Creek watershed at two locations on upper Macoupin Creek bracketing a segment of the watershed where increased implementation of conservation land-use practices was planned. Two monitoring stations were established, consisting of an upstream site (Macoupin Creek at Highway 108 near Carlinville, Illinois; U.S. Geological Survey streamgage 05586647) and a downstream site (Macoupin Creek at Highway 111 near Summerville, Ill.; U.S. Geological Survey streamgage 05586745). Data collected at these stations included continuous stream discharge and periodic samples for nutrients and suspended sediment. A Weighted Regressions on Time, Discharge, and Season-Kalman model was implemented to estimate daily concentrations for nitrate plus nitrite, total phosphorus, and suspended sediment for both monitoring stations. These daily concentrations were used in conjunction with the continuous stream discharge data to derive estimates of constituent flux, loads, and yields During the study period, the study area subbasin of the upper Macoupin Creek watershed reduced downstream nitrate and total phosphorus cummulative yields by approximately 54 and 21 percent, respectively; however, the cummulative yield of suspended sediment increased by approximately 10 percent from inputs within the study area. These data indicate that nitrate and phosphorus transport is greater from the upstream subbasin and being diluted in the combined subbasin by lower transport from the study area, whereas suspended sediment is being contributed from the study area reach, presumably through surface runoff and streambank and streambed erosion. [ABSTRACT FROM AUTHOR]

Published
2023
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2. Candidates for 2010 IAHPERD Offices.

Author

Garcia, Luis E.

Subjects
PROFESSIONAL associations, PHYSICAL training & conditioning, EMPLOYEES
Abstract

The article offers profiles of the candidates for 2010 Illinois Association for Health, Physical Education, Recreation and Dance (IAHPERD) Offices. For the President-Elect post, they include Luis E. Garcia of Northern Illinois University, Dean Denny Michalek of Romeoville High School and physical education teacher Cathy Patzner of Lake Park High School in Roselle. For Vice President-Elect for Children, teacher Lisa Boyle of Malta Elementary is the candidate. Retired Marilyn Bloechle is a candidate for the treasurer position.

Published
2009

3. The Genetic Basis of Anthocyanin Acylation in North American Grapes (Vitis spp.).

Author

Karn, Avinash, Diaz-Garcia, Luis, Reshef, Noam, Zou, Cheng, Manns, David C., Cadle-Davidson, Lance, Mansfield, Anna Katharine, Reisch, Bruce I., and Sacks, Gavin L.

Subjects
*GRAPES, *ACYLATION, *LOCUS (Genetics), *GRAPE products, *VITIS vinifera, *ANTHOCYANINS, *SKEWNESS (Probability theory), *GRAPE quality
Abstract

Hydroxycinnamylated anthocyanins (or simply 'acylated anthocyanins') increase color stability in grape products, such as wine. Several genes that are relevant for anthocyanin acylation in grapes have been previously described; however, control of the degree of acylation in grapes is complicated by the lack of genetic markers quantitatively associated with this trait. To characterize the genetic basis of anthocyanin acylation in grapevine, we analyzed the acylation ratio in two closely related biparental families, Vitis rupestris B38 × 'Horizon' and 'Horizon' × Illinois 547-1, for 2 and 3 years, respectively. The acylation ratio followed a bimodal and skewed distribution in both families, with repeatability estimates larger than 0.84. Quantitative trait locus (QTL) mapping with amplicon-based markers (rhAmpSeq) identified a strong QTL from 'Horizon' on chromosome 3, near 15.85 Mb in both families and across years, explaining up to 85.2% of the phenotypic variance. Multiple candidate genes were identified in the 14.85–17.95 Mb interval, in particular, three copies of a gene encoding an acetyl-CoA-benzylalcohol acetyltransferase-like protein within the two most strongly associated markers. Additional population-specific QTLs were found in chromosomes 9, 10, 15, and 16; however, no candidate genes were described. The rhAmpSeq markers reported here, which were previously shown to be highly transferable among the Vitis genus, could be immediately implemented in current grapevine breeding efforts to control the degree of anthocyanin acylation and improve the quality of grapes and their products. [ABSTRACT FROM AUTHOR]

Published
2021
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