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Dr. Paula Turkon
Ithaca College

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Research Keywords & Expertise

0 Agroecology
0 Aquaponics
0 Dendrochronology
0 Archaeobotany
0 Archeology

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Project

Project Goal: Dendrochronological sequence in northern Mesoamerica from 4th century AD to present

Starting Date:27 July 2020

Current Stage: working on historic and post-classic periods

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Brief report
Published: 30 July 2020 in Horticulturae
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Although many studies have investigated foodborne pathogen prevalence in conventional produce production environments, relatively few have investigated prevalence in aquaponics and hydroponics systems. This study sought to address this knowledge gap by enumerating total coliform and generic E. coli levels, and testing for Salmonella presence in circulating water samples collected from five hydroponic systems and three aquaponic systems (No. of samples = 79). While total coliform levels ranged between 6.3 Most Probable Number (MPN)/100-mL and the upper limit of detection (2496 MPN/100-mL), only three samples had detectable levels of E. coli and no samples had detectable levels of Salmonella. Of the three E. coli positive samples, two samples had just one MPN of E. coli/100-mL while the third had 53.9 MPN of E. coli/100-mL. While the sample size reported here was small and site selection was not randomized, this study adds key data on the microbial quality of aquaponics and hydroponics systems to the literature. Moreover, these data suggest that contamination in these systems occurs at relatively low-levels, and that future studies are needed to more fully explore when and how microbial contamination of aquaponics and hydroponic systems is likely to occur.

ACS Style

Daniel Weller; Lauren Saylor; Paula Turkon. Total Coliform and Generic E. coli Levels, and Salmonella Presence in Eight Experimental Aquaponics and Hydroponics Systems: A Brief Report Highlighting Exploratory Data. Horticulturae 2020, 6, 42 .

AMA Style

Daniel Weller, Lauren Saylor, Paula Turkon. Total Coliform and Generic E. coli Levels, and Salmonella Presence in Eight Experimental Aquaponics and Hydroponics Systems: A Brief Report Highlighting Exploratory Data. Horticulturae. 2020; 6 (3):42.

Chicago/Turabian Style

Daniel Weller; Lauren Saylor; Paula Turkon. 2020. "Total Coliform and Generic E. coli Levels, and Salmonella Presence in Eight Experimental Aquaponics and Hydroponics Systems: A Brief Report Highlighting Exploratory Data." Horticulturae 6, no. 3: 42.

Articles
Published: 14 December 2017 in Latin American Antiquity
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Although dendrochronological methods have the potential to provide precise calendar dates, they are virtually absent in Mesoamerican archaeological research. This absence is due to several long-standing, but erroneous, assumptions: that tree rings in this region do not reflect annual growth and environmental variability, that an adequate number of samples do not exist, and that tree-ring measurements cannot be useful without modern trees to link prehispanic chronologies. In this article we present data from the sites of La Quemada and Los Pilarillos, located in the Malpaso Valley, Zacatecas, to demonstrate that suitable archaeologically derived samples of dendrochronologically useful species do exist, that the samples from these sites are measurable and cross-datable, and that the tree rings can yield precise calendar dates using a method that “wiggle-matches” radiocarbon dates on tree-ring sequences. The work demonstrates the potential of these methods to address chronological, and, in the future, climatic questions, which have so far eluded archaeological work in the region.

ACS Style

Paula Turkon; Sturt W. Manning; Carol Griggs; Marco Antonio Santos Ramírez; Ben A. Nelson; Carlos Torreblanca Padilla; Eva Maria Wild. APPLICATIONS OF DENDROCHRONOLOGY IN NORTHWESTERN MEXICO. Latin American Antiquity 2017, 29, 102 -121.

AMA Style

Paula Turkon, Sturt W. Manning, Carol Griggs, Marco Antonio Santos Ramírez, Ben A. Nelson, Carlos Torreblanca Padilla, Eva Maria Wild. APPLICATIONS OF DENDROCHRONOLOGY IN NORTHWESTERN MEXICO. Latin American Antiquity. 2017; 29 (1):102-121.

Chicago/Turabian Style

Paula Turkon; Sturt W. Manning; Carol Griggs; Marco Antonio Santos Ramírez; Ben A. Nelson; Carlos Torreblanca Padilla; Eva Maria Wild. 2017. "APPLICATIONS OF DENDROCHRONOLOGY IN NORTHWESTERN MEXICO." Latin American Antiquity 29, no. 1: 102-121.

Journal article
Published: 01 March 2006 in Journal of Ethnobiology
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ACS Style

Paula Turkon. MORPHOLOGICAL VARIATION OF MAIZE CUPULES AND ACCESS TO HIGH QUALITY MAIZE IN THE PREHISPANIC MALPASO VALLEY, ZACATECAS, MEXICO. Journal of Ethnobiology 2006, 26, 139 -164.

AMA Style

Paula Turkon. MORPHOLOGICAL VARIATION OF MAIZE CUPULES AND ACCESS TO HIGH QUALITY MAIZE IN THE PREHISPANIC MALPASO VALLEY, ZACATECAS, MEXICO. Journal of Ethnobiology. 2006; 26 (1):139-164.

Chicago/Turabian Style

Paula Turkon. 2006. "MORPHOLOGICAL VARIATION OF MAIZE CUPULES AND ACCESS TO HIGH QUALITY MAIZE IN THE PREHISPANIC MALPASO VALLEY, ZACATECAS, MEXICO." Journal of Ethnobiology 26, no. 1: 139-164.

Journal article
Published: 30 June 2004 in Journal of Anthropological Archaeology
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ACS Style

Paula Turkon. Food and status in the prehispanic Malpaso Valley, Zacatecas, Mexico. Journal of Anthropological Archaeology 2004, 23, 225 -251.

AMA Style

Paula Turkon. Food and status in the prehispanic Malpaso Valley, Zacatecas, Mexico. Journal of Anthropological Archaeology. 2004; 23 (2):225-251.

Chicago/Turabian Style

Paula Turkon. 2004. "Food and status in the prehispanic Malpaso Valley, Zacatecas, Mexico." Journal of Anthropological Archaeology 23, no. 2: 225-251.