Short-term emissions of CO 2 and N 2 O in response to periodic flood irrigation with waste water in the Mezquital Valley of Mexico

González-Méndez, Blanca; Webster, R.; Fiedler, Sabine; Loza-Reyes, Elisa; Hernández, José Manuel; Ruíz-Suárez, L. G.; Siebe, Christina

doi:10.1016/j.atmosenv.2014.10.048

Cited by 23 publications

(16 citation statements)

References 19 publications

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“…Friedel and colleagues 29 reported a higher denitrification capacity in wastewater irrigated soil than in rainfed soil of the Mezquital Valley. Further, nitrous oxide emissions from wastewater irrigated fields cropped with maize are 10-fold larger than from rainfed fields 54 . Methane metabolism genes were also more abundant in soil under wastewater irrigation, this might be associated to the high methane content of wastewater 55 and the higher abundance of Verrucomicrobia and Gammaproteobacteria in wastewater irrigated soils, as they comprise methanotrophic taxa, such as Methylacidiphilum and Methylococcacea , respectively 56 .…”

Section: Resultsmentioning

confidence: 98%

Drylands soil bacterial community is affected by land use change and different irrigation practices in the Mezquital Valley, Mexico

Lüneberg

Schneider²,

Siebe

et al. 2018

Sci Rep

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Dryland agriculture nourishes one third of global population, although crop irrigation is often mandatory. As freshwater sources are scarce, treated and untreated wastewater is increasingly used for irrigation. Here, we investigated how the transformation of semiarid shrubland into rainfed farming or irrigated agriculture with freshwater, dam-stored or untreated wastewater affects the total (DNA-based) and active (RNA-based) soil bacterial community composition, diversity, and functionality. To do this we collected soil samples during the dry and rainy seasons and isolated DNA and RNA. Soil moisture, sodium content and pH were the strongest drivers of the bacterial community composition. We found lineage-specific adaptations to drought and sodium content in specific land use systems. Predicted functionality profiles revealed gene abundances involved in nitrogen, carbon and phosphorous cycles differed among land use systems and season. Freshwater irrigated bacterial community is taxonomically and functionally susceptible to seasonal environmental changes, while wastewater irrigated ones are taxonomically susceptible but functionally resistant to them. Additionally, we identified potentially harmful human and phytopathogens. The analyses of 16 S rRNA genes, its transcripts and deduced functional profiles provided extensive understanding of the short-term and long-term responses of bacterial communities associated to land use, seasonality, and water quality used for irrigation in drylands.

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Section: Resultsmentioning

confidence: 98%

Drylands soil bacterial community is affected by land use change and different irrigation practices in the Mezquital Valley, Mexico

Lüneberg

Schneider²,

Siebe

et al. 2018

Sci Rep

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“…Soil scientists have monitored the soil and planned experiments with installations such as static chambers in which to collect gaseous emissions (see, for example, González-Méndez et al (2015) and their repeated measurements of the associated redox potentials from electrodes buried in the soil (González-Méndez et al, 2017)), lysimeters in which to monitor leachates passing through the soil, laboratory reactors in which organic matter is mineralized (e.g. Soil scientists have monitored the soil and planned experiments with installations such as static chambers in which to collect gaseous emissions (see, for example, González-Méndez et al (2015) and their repeated measurements of the associated redox potentials from electrodes buried in the soil (González-Méndez et al, 2017)), lysimeters in which to monitor leachates passing through the soil, laboratory reactors in which organic matter is mineralized (e.g.…”

Section: Repeated Measurementsmentioning

confidence: 99%

Analysis of variance in soil research: let the analysis fit the design

Webster

Lark

2018

European J Soil Science

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Summary Sound design for experiments on soil is based on two fundamental principles: replication and randomization. Replication enables investigators to detect and measure contrasts between treatments against the backdrop of natural variation. Random allocation of experimental treatments to units enables effects to be estimated without bias and hypotheses to be tested. For inferential tests of effects to be valid an analysis of variance (anova) of the experimental data must match exactly the experimental design. Completely randomized designs are usually inefficient. Blocking will usually increase precision, and its role must be recognized as a unique entry in an anova table. Factorial designs enable questions on two or more factors and their interactions to be answered simultaneously, and split‐plot designs may enable investigators to combine factors that require disparate amounts of land for each treatment. Each such design has its unique correct anova; no other anova will do. One outcome of an anova is a test of significance. If it turns out to be positive then the investigator may examine the contrasts between treatments to discover which themselves are significant. Those contrasts should have been ones in which the investigator was interested at the outset and which the experiment was designed to test. Post‐hoc testing of all possible contrasts is deprecated as unsound, although the procedures may guide an investigator to further experimentation. Examples of the designs with simulated data and programs in GenStat and R for the analyses of variance are provided as File S1. Highlights Replication and randomization are essential for sound experimentation on variable soil. Analyses of variance of data from experiments must match the experimental designs. Experiments should be designed to answer preplanned questions and test hypotheses. Efficiency can be gained by blocking and factorial combinations of treatments.

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“…The irrigation permeates the soil and modifies the natural groundwater recharge. The irrigation rates go from 1500 to 2200 mm/y depending on crop and soil type [25]. Agricultural consumption reduces the final output, which flows to the Zimapan Hydroelectric dam, affecting its generation capacity.…”

Section: Introductionmentioning

confidence: 99%

“…There are many reports on the Mezquital Valley environmental damage, such as water contamination [26][27][28][29][30], agriculture emissions [25], health risks [7,31], soil degradation [32] and pollution [33][34][35], and unsustainable agricultural practices [36][37][38][39], among others.…”

Section: Introductionmentioning

confidence: 99%

Megacity Wastewater Poured into A Nearby Basin: Looking for Sustainable Scenarios in A Case Study

Chamizo-Checa

Otazo-Sánchez

Gordillo-Martínez

et al. 2020

Water

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Megacity sewage creates socioeconomic dependence related to water availability in nearby areas, especially in countries with hydric stress. The present article studies the past, current, and future water balance progression of realistic scenarios from 2005 to 2050 in the Mezquital Valley, the receptor of Mexico City untreated sewage since 1886, allowing for agriculture irrigation under unsustainable conditions. The Water Evaluation and Planning System (WEAP) was used to estimate water demand and supply, and validation was performed by comparing results with outflow data from the Tula River. Simulated scenarios were (1st) steady-state based on inertial growth rates (2nd) transient scenario concerning the influence of forecasted climate change perturbations in surface water and hydric stress for 2050; and (3rd) the previous scenario appending scheduled actions, such as 36% reduction in imported wastewater and the startup of a massive Wastewater Treatment Plant, allowing for drip and sprinkler irrigation from the year 2030. The main results are as follows: (a) in the period 2005–2017, 59% of the agriculture depended on flood irrigation with megacity sewage; (b) the outcomes of water balance scenarios up to 2050 are presented, with disaggregated sectorial supply of ground and superficial water; (c) drip irrigation would reduce agriculture demands by 42% but still does not guarantee the downflow hydroelectric requirements, aggravated by the lack of wastewater supply from 2030. This research highlights how present policies compromise future Valley demands.

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Short-term emissions of CO 2 and N 2 O in response to periodic flood irrigation with waste water in the Mezquital Valley of Mexico

Cited by 23 publications

References 19 publications

Drylands soil bacterial community is affected by land use change and different irrigation practices in the Mezquital Valley, Mexico

Drylands soil bacterial community is affected by land use change and different irrigation practices in the Mezquital Valley, Mexico

Analysis of variance in soil research: let the analysis fit the design

Megacity Wastewater Poured into A Nearby Basin: Looking for Sustainable Scenarios in A Case Study

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