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Dissertations / Theses on the topic 'Microbial count'

Author: Grafiati

Published: 4 June 2021

Last updated: 26 July 2025

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1

Alsaadi, Yousef Saeed. "Practical use and development of biomérieux TEMPO® system in microbial food safety." Diss., Kansas State University, 2014. http://hdl.handle.net/2097/18708.

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Doctor of Philosophy<br>Department of Food Science<br>Daniel Y.C. Fung<br>In the food industry, coliform testing is traditionally done by the time consuming and labor intensive plate count method or tube enumeration methods. The TEMPO® system (bioMérieux, Inc.) was developed to improve laboratory efficiency and to replace traditional methods. It uses a miniaturization of the Most Probable Number (MPN) method with 16 tubes with 3 dilutions in one single disposable card. It utilizes two stations: the TEMPO® Preparation station and the TEMPO® Reading station. In this study, the Oxyase® (Oxyase®,

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2

Aspevall, Olle. "Diagnosis of urinary tract infections : aspects of quality assurance and communication of concepts /." Stockholm, 2001. http://diss.kib.ki.se/2001/91-628-4899-2/.

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3

Jernberg, Cecilia. "Use of microbiomics to study human impacts on complex microbial communities /." Stockholm, 2006. http://diss.kib.ki.se/2006/91-7140-960-2/.

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4

Andersson, Klara, Wiktor Gustafsson, Fredrik Lindeberg, Tobias Luckey, and Elin Ramström. "Count Your Microbial Enemies Faster : Recommending the Best Bioburden Test for High-Fat Parenteral Nutrition." Thesis, Uppsala universitet, Institutionen för biologisk grundutbildning, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-323557.

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5

Shikwambana, Sydney. "Microbial population dynamics, enzyme activity and quantification of nutrient release in soil amended with composed with varying degree of maturity." Thesis, University of Limpopo, 2015. http://hdl.handle.net/10386/1540.

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Thesis (M. Sc. Agriculture (Soil Science)) -- University of Limpopo, 2015<br>The activity and functional diversity of micro-organisms contribute to the stability and productivity of agro-ecosystems. Soil micro-organisms and enzyme activities have been suggested as potential indicators of soil quality. Hence, management practices that can enhance microbial diversity and enzyme activities are essential for improving soil health and soil fertility status. The aim of the study was to assess the effects of compost maturity age on the change in bio-quality indicators of compost and compost amended s

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6

Maraha, Ninwe. "Physiological status of bacteria used for environmental applications /." Stockholm, 2007. http://diss.kib.ki.se/2007/91-7357-063-X/.

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7

Oliveira, Andréa Ranucci. "Avaliação microbiológica de circuitos respiratórios e anestésicos submetidos ao processo de desinfecção térmica." Faculdade de Medicina de São José do Rio Preto, 2012. http://bdtd.famerp.br/handle/tede/203.

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Made available in DSpace on 2016-01-26T12:51:48Z (GMT). No. of bitstreams: 1 andrearanuccideoliveira_dissert.pdf: 891643 bytes, checksum: 8f4fb2c47edb543f3ffbf41be6a1179a (MD5) Previous issue date: 2012-04-12<br>Introduction: The reprocessing and reuse of medical practices are common in health care institutions in Brazil and several countries. However, it is necessary to establish parameters to guide the development, validation and implementation of reprocessing protocols, in order to ensure product quality and safety and health of patients. This conduct is an important infection control act

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8

Agvald-Öhman, Christina. "Colonization, infection and dissemination in intensive care patients /." Stockholm : Karolinska institutet, 2007. http://diss.kib.ki.se/2007/978-91-7357-075-6/.

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9

Vilas-Boas, Vanessa Aparecida 1981. "Carga microbiana de trocartes reprocessaveis apos laparoscopias ginecologicas." [s.n.], 2009. http://repositorio.unicamp.br/jspui/handle/REPOSIP/311014.

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Orientador: Maria Isabel Pedreira de Freitas<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Ciencias Medicas<br>Made available in DSpace on 2018-08-14T15:03:05Z (GMT). No. of bitstreams: 1 Vilas-Boas_VanessaAparecida_M.pdf: 29367721 bytes, checksum: c5b64e8b977736f8ec3c05b44d7edf96 (MD5) Previous issue date: 2009<br>Resumo: A transmissão de infecções hospitalares está relacionada à sobrevivência de microrganismos nas superfícies ambientais e no instrumental cirúrgico. Nos últimos anos, o Brasil tem se deparado com um cenário disperso em relação à validação do pro

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10

Bellali, Sara. "Évaluation de l'impact de la conservation sur la viabilité et la cultivabilité du microbiote intestinal humain." Thesis, Aix-Marseille, 2019. http://theses.univ-amu.fr.lama.univ-amu.fr/191121_BELLALI_58q14hn462lvr402balo_TH.pdf.

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Le microbiote intestinal humain abrite un grand nombre de micro-organismes qui jouent un rôle crucial dans la santé humaine. Cependant, le nombre de bactéries détectées par des méthodes quantitatives indépendantes de la culture s'est révélé beaucoup plus élevé que celui des bactéries cultivées sur des géloses. Cet écart est connu sous le nom de la « Great plate count anomaly ». L'objectif principal de ce travail était d'expliquer ''l’incultivabilité" des bactéries intestinales et de maintenir leur viabilité. Dans ce travail, nous avons constaté que l'exposition à l'oxygène pendant plus d'une h

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11

Hsu, Kuei-Ling C. "Variability of two sampling methods in plaque samples." Thesis, Birmingham, Ala. : University of Alabama at Birmingham, 2008. https://www.mhsl.uab.edu/dt/2008m/hsu.pdf.

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12

Almeida, Maristela Gomes de. ""Estudo da microbiota intestinal em doentes com retocolite ulcerativa antes e após retocolectomia com anastomose de bolsa ileal ao canal anal"." Universidade de São Paulo, 2004. http://www.teses.usp.br/teses/disponiveis/5/5154/tde-19102005-160653/.

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Este estudo tem como objetivo, descrever a microbiota intestinal de pacientes com retocolite ulcerativa grave, em tratamento clínico, antes e após retocolectomia com anastomose de bolsa ileal ao canal anal. Comparou-se a flora bacteriana do íleo terminal e do reto no pré-operatório com a flora encontrada na bolsa ileal após dois e oito meses do fechamento da ileostomia e com a flora do íleo terminal e do reto de um grupo controle. Observou-se que a Veillonella sp foi a bactéria mais freqüentemente encontrada em todos os grupos. Não houve diferenças significativas entre a flora intestinal do gr

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13

Brosco, Roberta Pires Dias. "Avaliação in vitro das interfaces dos implantes Cone Morse e Hexágono Interno." Universidade de São Paulo, 2014. http://www.teses.usp.br/teses/disponiveis/61/61132/tde-25062014-162622/.

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Objetivo: Considerando que a precisão na adaptação do implante ao intermediário transmucoso é fator importante para a longevidade da prótese e que os sistemas de implantes possuem origens diversas na sua fabricação, nos propusemos a verificar a infiltração da bactéria Enterococcus faecalis na interface entre intermediário transmucoso e implantes do tipo Cone Morse e Hexágono Interno no sistema Neodent . Material e Método: A amostra foi composta por 20 implantes do tipo Cone Morse com Index Protético, 20 implantes Titamax Cone Morse e 20 implantes de Hexágono Interno e 20 intermediários transmu

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14

Conner, Lafe G. "Environmental and Adaptive Buffers that Mediate the Response of Subalpine Ecosystems to Environmental Change." BYU ScholarsArchive, 2015. https://scholarsarchive.byu.edu/etd/5913.

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This document reports the results of 4 studies of subalpine ecosystem ecology, describing ways that spatial heterogeneity in soils and plant communities mediate ecosystem responses to environmental change. Ecosystem responses to environmental change are also mediated by regional climate patterns and interannual variability in weather. In the first chapter we report the results of an experiment to test for the mediating effects of associational resistance in a forest community that experienced wide-spread beetle kill. We found that Engelmann spruce were more likely to survive a beetle outbreak

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15

Teixeira, Wendel. "Avaliação in vitro da infiltração bacteriana na interface implante/componente protético em conexões dos tipos cone morse e hexágono interno." Universidade de São Paulo, 2009. http://www.teses.usp.br/teses/disponiveis/58/58131/tde-26032010-180717/.

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A precisão na fabricação de um implante pode ser verificada pelo grau de adaptação na interface implante/componente protético. Uma pobre adaptação permite a infiltração de microrganismos através dessa interface e a colonização dos espaços vazios dos implantes, levando ao surgimento de reações inflamatórias dos tecidos periimplantares e ao insucesso clínico do tratamento. O objetivo deste trabalho foi avaliar, in vitro, a infiltração de uma bactéria, o Staphylococcus aureus, através da interface implante/componente protético, pelo método de cultura bacteriana. Foram utilizados vinte conjuntos d

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16

Price, Steven Dwight 1961. "Microbial catalyzed acid production in Los Angeles County sewers." Thesis, The University of Arizona, 1989. http://hdl.handle.net/10150/277006.

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Corrosion of concrete sewer crowns will cost the County Sanitation Districts of Los Angeles County approximately $150 million for repairs to their deteriorating sewage system. Other parts of the country are experiencing similar problems. Crown corrosion is induced by microbial oxidation of reduced sulfur to sulfuric acid, which attacks the concrete. Bacteria, of the genus Thiobacillus are generally responsible for catalyzing these reactions. Thiobacillicollected from sewers were used to establish stoichiometry and biochemical aspects of sulfide oxidation. Metals inhibition was studied among th

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17

Buczynski, Bradley W. "Microbial Biofilm and Bacterial Endotoxin Adhesion to Zirconium Surfaces." University of Akron / OhioLINK, 2006. http://rave.ohiolink.edu/etdc/view?acc_num=akron1147750068.

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18

Kingsbury, Laura. "Comparisons of microbial counts in organic chickens and commercially processed chickens." Menomonie, WI : University of Wisconsin--Stout, 2006. http://www.uwstout.edu/lib/thesis/2006/2006kingsburyl.pdf.

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19

Touchton, Gregory D. "Microbial Source Tracking in a Mixed Use Watershed in Northern Virginia." Thesis, Virginia Tech, 2005. http://hdl.handle.net/10919/34322.

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Prince William County, located in the rapidly developing Northern Virginia region, contains watersheds of mixed rural and urban/suburban uses. As part of Virginia regulations, recreational waters must be tested and remain under a certain standard for levels of fecal indicator bacteria (FIB). The sources of fecal pollution in neighboring watersheds within the county were determined over the 12 months previous to this project by performing Antibiotic Resistance Analysis (ARA, a microbial source tracking protocol) on Enterococcus and Escherichia coli (E. coli). This study indicated that multiple

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20

Milbrandt, Eric Charles. "Microbial ecology of South Slough sediments : community composition of bacteria and patterns of occurrence." Thesis, Thesis (Ph. D.)--University of Oregon, 2003, 2003. http://hdl.handle.net/1794/9965.

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21

Wright, Debra Lee. "A Microbial and Chemical Water Quality Study of Sixteen Individual Wells in Rural Southern Cochise County, Arizona." Thesis, The University of Arizona, 2010. http://hdl.handle.net/10150/193419.

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This paper is part of a larger water quality study for Arizona (Marrero-Ortiz et al., 2009) and looks more closely at 22 water samples from 16 wells less than 250 feet deep in rural areas of southern Cochise County, Arizona. Nine wells were positive for total coliforms, four wells tested positive for fecal coliforms and one well tested positive for Escherichia coli. Nine wells were positive for enterococci and 13 were positive for Aeromonas hydrophila, some with very high levels. Fourteen of 21 possible metals were detected. All 16 wells contained barium. Ten wells were above limits for at lea

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22

Kushwaha, Priyanka. "Microbial Functional Diversity and the Associated Biogeochemical Interactions Across Miami-Dade County, Florida Soils." FIU Digital Commons, 2016. http://digitalcommons.fiu.edu/etd/3000.

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Decomposition of soil organic matter by microbial processes results in carbon sequestration within soils and/or carbon loss via atmospheric emission of carbon dioxide and methane. Natural as well as anthropogenic factors have been documented to impact soil microbial diversity and the associated biogeochemical functions. The soil microbial communities co-inhabiting Miami-Dade County soils, Florida are under threat because of the ongoing restoration efforts in the adjoining Florida Everglades Parks, predicted climatic changes such as sea-level rise and high rainfall, as well as urbanization. The

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23

Dempsey, Mark A. "Exotic earthworms and soil microbial community composition in a northern hardwood forest." Miami University / OhioLINK, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=miami1259958575.

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24

Dempsey, Mark Austin. "Exotic earthworms and soil microbial community composition in a northern hardwood forest." Oxford, Ohio : Miami University, 2009. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=miami1259958575.

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25

Wade, Timothy Rion. "Use of Escherichia coli for Microbial Source Tracking in a Mixed Use Watershed in Northern Virginia." Thesis, Virginia Tech, 2007. http://hdl.handle.net/10919/35339.

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Prince William County, located in the rapidly developing Northern Virginia region, contains watersheds of mixed rural and urban/suburban uses. The project goal was to monitor and evaluate 21 stream locations, over 13 months, in the Occoquan Basin identified as impaired due to high E. coli densities. One site on each of eight streams, two sites on each of five streams, and three sites on the remaining stream were chosen for E. coli monitoring and microbial source tracking (MST). MST was performed using antibiotic resistance analysis (ARA) and fluorometric analysis. Escherichia coli was cho

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26

Collins, Krystal Marie. "PETROGRAPHY OF THE COOK-MCCORMICK CORE, HEIDELBERG, JASPER COUNTY, MISSISSIPPI AND RELATIONSHIP TO MICROBIAL PERMIABILITY PROFILE MODIFICATION." MSSTATE, 2008. http://sun.library.msstate.edu/ETD-db/theses/available/etd-04042008-092608/.

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The objective of this study is to characterize heterogeneity, mineralogy, and diagenetic history in the Upper Cretaceous Eutaw Formation of the Heidelberg field Jasper County, Mississippi through analysis of the Cook-McCormick-4 core. The Eutaw Formation in this interval ranges from fine-grained sandstone to siltstone. Interbedded oil-rich sandstone beds are between 1-2 in (3-5 cm) and 3ft (1 m) thick. A few intervals display consistent lithology over as much as 9 ft (3 m), however, in the majority of core beds range from 1-2 inches (3-5 cm) to 2-3 ft (0.6-1 m). Calcite is not present in oil-r

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27

Ikeda, Natália Yumi. "Utilização de própolis e probiótico em dietas para leitões recém-desmamados." Universidade de São Paulo, 2016. http://www.teses.usp.br/teses/disponiveis/11/11139/tde-06042016-154010/.

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A restrição ao uso de antimicrobianos melhoradores de desempenho em dietas animais, em consequência de preocupações relacionadas a qualidade e segurança dos alimentos, estimula a procura por aditivos alternativos naturais. Com o intuito de investigar aditivos alternativos naturais na nutrição de leitões recém-desmamados, o objetivo deste projeto de pesquisa foi estudar os efeitos independentes e da combinação da própolis bruta e do probiótico, adicionados em dietas para leitões recém-desmamados, sobre o desempenho zootécnico, a frequência de diarreia, a digestibilidade dos nutrientes e energia

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28

HSU, FANG-JU, and 許芳如. "Effect of Chlorine and Ozone Solutions on the Microbial Count and Browning Enzymes Activity." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/u37gdj.

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碩士<br>靜宜大學<br>食品營養學系<br>106<br>The crispy and nutrient lettuce is the favor of comsumers as they purchase the vegetable salads. In order to extend the shelf life of vegetable salads, some manufacturers may applied pesticides or preservatives into the processing procedure. However, the pesticide and preservative residues are the critical issue of food safety for consumers. The purposes of this study were to investigate the effect of sodium hypochlorite, chlorine dioxide, and ozone treatments on growth of microbial and enzymatic browning of fresh-cut vegetables.In this experiment, washed fresh-

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29

Pavlov, D. N. (Dobromir Nikolov). "Determination of cytotoxicity and invasiveness of heterotrophic plate count bacteria isolated from drinking water." Diss., 2002. http://hdl.handle.net/2263/29052.

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Heterotrophic plate counts (HPCs) are commonly used to assess the general microbiological quality of drinking water. Drinking water quality specifications world-wide recommend HPC limits from 100 to 500 cfu.m1-1. However, a number of recent studies revealed evidence that commonly used indicator bacteria may not be as harmless as generally accepted. It appears that immuno-compromised individuals, which represent increasing components of many consumer populations, are particularly at risk. This would include the very young and very old, patients with diseases such as AIDS, and patients on therap

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30

Хомякова, Альона Олександрівна. "Санітарно-екологічний стан Гребного каналу м. Запоріжжя". Магістерська робота, 2020. https://dspace.znu.edu.ua/jspui/handle/12345/1501.

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Хомякова А. О. Санітарно-екологічний стан Гребного каналу м. Запоріжжя : кваліфікаційна робота магістра спеціальності 101 "Екологія" / наук. керівник Н. І. Костюченко. Запоріжжя : ЗНУ, 2020. 60 с.<br>UA : Дана робота викладена на 60 сторінках друкованого тексту, з них 46 сторінка основного тексту, містить 8 таблиць, 1 рисунок та 2 додатки. Перелік використаної літератури включає 51 джерел, з них 1 латиницею. Метою даної роботи було оцінити вплив рекреаційного навантаження на санітарний стан Гребного каналу (м. Запоріжжя) за фізико-хімічними і мікробіологічними показниками та рівень загальної

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31

Shiozawa, Tracy L. "An epifluorescence method for assessing viability of bacteria in soil aggregates." Thesis, 1999. http://hdl.handle.net/1957/33337.

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32

Liu, Yu-Fang, and 劉玉芳. "Effects of Electrical Stimulation on Broiler Surface Microbial Counts and Meat Quality." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/23532963575042275673.

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33

Wang, Wei-Jen, and 王韋仁. "Determination of Microbial Counts in Taiwan Beverage and Assessment on its Microbiological Standards." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/95525659630278496000.

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碩士<br>臺灣大學<br>食品科技研究所<br>98<br>The Beverage Hygienic Standard in Taiwan was published in 1992 contained only three categories of beverages, including carbonated beverages, uncarbonated beverages, and acidic beverages containing milk or dairy products. However, it seems not to be suitable for the wide variety of beverages in the present market. Besides, microbiological criteria of beverages have not been revised since 1992 and the definition of beverage is not well defined either. Therefore, it is necessary to re-evaluate whether the standard is applicable to the variety of beverage products or

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34

Middleton, Robert Gerald. "Cattle access affects periphyton community structure in Tennessee farm ponds." 2010. http://trace.tennessee.edu/utk_gradthes/732.

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Cattle farming is vital to the economy of the United States. Frequently, cattle are given access to ponds and streams for water. The relative impacts of cattle access in natural water sources on the periphyton community have been rarely investigated. Periphyton is the basis of the aquatic food web, and community composition can serve as a bioindicator of pollution. Thus, my objectives were to quantify the effects of cattle access in aquatic lentic systems on periphyton community structure and biovolume, identify taxa that were associated with cattle access, and identify abiotic mechanisms

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