Monitoring helps reduce water-quality impacts in flood-irrigated pasture

Lancaster, Donald L.; Morrison, Julie A.; Lile, David F.; Sado, Yukako; Huang, Bei

doi:10.3733/ca.v059n03p168

Cited by 8 publications

(3 citation statements)

References 4 publications

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“…In arid climates such as in California, high crop production involving intensive inputs and irrigation may reduce water, air and soil quality (DeClerck and Singer 2003;Tate et al 2005). Irrigation runoff often contains a variety of pollutants, such as sediment, dissolved organic carbon (DOC), and nutrients that can affect downstream drinking water quality.…”

Section: Introductionmentioning

confidence: 99%

Infiltration, Runoff, and Export of Dissolved Organic Carbon from Furrow-Irrigated Forage Fields under Cover Crop and No-Till Management in the Arid Climate of California

Mailapalli

Horwáth

Wallender

et al. 2012

J. Irrig. Drain Eng.

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Development of best management practices (BMPs) such as conservation tillage and winter cover crop to mitigate runoff and reduce dissolved chemicals in irrigation runoff is an important objective for controlling surface water pollution attributable to agricultural activities. In this study, the effect of standard tillage (ST), ST with winter cover cropping (STCC), and no-till (NT) management practices on infiltration, runoff, and dissolved organic carbon (DOC) export from furrow-irrigated fields of 244-m length was investigated for summer 2007 and 2008 irrigations. The practices were implemented for 2 years. The average surface residue cover was 11, 44, and 32% for ST, STCC, and NT, respectively, for 2007 and 11, 59, and 61%, respectively, in the following year of the study. Two irrigations in each year were considered for the analysis. The runoff samples were collected from each tillage treatment using ISCO autosamplers at regular time intervals. The infiltration and runoff were estimated using a volume balance model (VBM) by considering a 0.2-m irrigation requirement. Converting from ST to STCC increased the infiltration by 14 and 43% and reduced the runoff by 48 and 43% in 2007 and 2008 irrigations, respectively; whereas, converting ST to NT enhanced the infiltration by 4% in both years and decreased the runoff by 19 and 23% in 2007 and 2008 irrigations, respectively. The authors observed only slightly higher DOC concentrations in STCC, but there was a 24% increase for NT in 2007 irrigations, and both compared to with ST ranged from 3.98 to 5:46 mg=L. The DOC concentration was not significantly different among the treatments in 2008 irrigations (3.48 to 4:6 mg=L). Combining the runoff and DOC concentration effects, the DOC export for STCC was decreased by 55% in both years; whereas, it was decreased by 4 and 27% for NT in 2007 and 2008 irrigations, respectively, compared with ST. Although STCC and NT have higher concentrations, the reduction in export in these treatments is attributable to lower runoff. These results suggest that DOC export can be controlled with STCC practice. No-till showed the same trend, although these results must be confirmed after extended implementation of this practice.

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Section: Introductionmentioning

confidence: 99%

Infiltration, Runoff, and Export of Dissolved Organic Carbon from Furrow-Irrigated Forage Fields under Cover Crop and No-Till Management in the Arid Climate of California

Mailapalli

Horwáth

Wallender

et al. 2012

J. Irrig. Drain Eng.

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“…The distribution of changes in flood areas in the study shown in Fig. 5b revealed a different picture compared to the patterns of changes in flood depths, specifically for PA (−7% to 12%) and MF (0.1%) possessing the highest and lowest flood areas respectively (Tate et al 2005;Gao and Yu 2014;Arsyad and Wahyuni 2019). Under the 2016 land cover conditions, PA experienced the most expansion of flood areas ranging from 8 to 28%, which constituted around 5% to 15% of the study areas.…”

Section: Predictions Of Flood Depths Of Mlbsmentioning

confidence: 82%

A Methodical Assessment of Floodplains in Mixed Land Covers Encompassing Bridges in Alabama State: Implications of Spatial Land Cover Characteristics on Flood Vulnerability

Preetha

Shirani-bidabadi

Al-Hamdan

et al. 2021

Water Resour Manage

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The mixed land covers encompassing bridges (MLB) are integral indicator of the socioeconomic hydrological system, and their progressions are vital for flood risk assessment. However, most of the previous studies have neglected a thorough evaluation of MLBs (e.g., types, areas, and depths) on impacting flood vulnerability. This paper addresses this research gap by methodically assessing the spatial characteristics of MLBs in floodplains and their divergent impacts on flood vulnerability using four case studies of Alabama State in the USA. The hydrological and bridge data were synthesized from United States Geological Survey and National Bridge Inventory, respectively. A union of Hydrologic Engineering Center's-River Analysis System (HEC-RAS), Geographic Information System, and Surface Difference Model were employed to retrieve water surface profiles and floodplain assessments in MLBs. The results highlighted that the occurrence of floodplains was more correlated to flood depths compared to flood areas in the MLBs of Alabama. The spatial contribution of the diverse MLBs in producing deep (19%) and shallow (30%) flood depths in the bridges of Alabama were 49%, while medium flood depths were impacted only on 4% of the MLBs. The highest and lowest flood areas were noticed in the MLBs of pastures and mixed forests, respectively. Overall, the findings implied that the contribution of the individual MLBs in floodplains is multifaceted in the bridges of Alabama with spatially varying land cover distribution. Further, it is recommended that for assessing flood vulnerability, the stakeholders should focus not only on the MLBs but also on its spatially dynamic characteristics.

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“…Wetlands associated with flood‐irrigated agriculture exhibited both lower macroinvertebrate resource density and fewer observed waterfowl. Irrigation ditches hold flowing water that has been recently redirected from rivers, and hay meadows are typically engineered to have inflows and outflows so water is continuously moving through the system (Tate et al., 2005 ). These attributes may result in higher dissolved oxygen and lower water temperatures.…”

Section: Discussionmentioning

confidence: 99%

Riding the wetland wave: Can ducks locate macroinvertebrate resources across the breeding season?

Setash,

Behney,

Gammonley

et al. 2024

Ecology and Evolution

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Food availability varies considerably over space and time in wetland systems, and consumers must be able to track those changes during energetically‐demanding points in the life cycle like breeding. Resource tracking has been studied frequently among herbivores, but receives less attention among consumers of macroinvertebrates. We evaluated the change in resource availability across habitat types and time and the simultaneous density of waterfowl consumers throughout their breeding season in a high‐elevation, flood‐irrigated system. We also assessed whether the macroinvertebrate resource density better predicted waterfowl density across habitats, compared to consistency (i.e., temporal evenness) of the invertebrate resource or taxonomic richness. Resource density varied marginally across wetland types but was highest in basin wetlands (i.e., ponds) and peaked early in the breeding season, whereas it remained relatively low and stable in other wetland habitats. Breeding duck density was positively related to resource density, more so than temporal resource stability, for all species. Resource density was negatively related to duckling density, however. These results have the potential to not only elucidate mechanisms of habitat selection among breeding ducks in flood‐irrigated landscapes but also suggest there is not a consequential trade‐off to selecting wetland sites based on energy density versus temporal resource stability and that good‐quality wetland sites provide both.

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Monitoring helps reduce water-quality impacts in flood-irrigated pasture

Cited by 8 publications

References 4 publications

Infiltration, Runoff, and Export of Dissolved Organic Carbon from Furrow-Irrigated Forage Fields under Cover Crop and No-Till Management in the Arid Climate of California

Infiltration, Runoff, and Export of Dissolved Organic Carbon from Furrow-Irrigated Forage Fields under Cover Crop and No-Till Management in the Arid Climate of California

A Methodical Assessment of Floodplains in Mixed Land Covers Encompassing Bridges in Alabama State: Implications of Spatial Land Cover Characteristics on Flood Vulnerability

Riding the wetland wave: Can ducks locate macroinvertebrate resources across the breeding season?

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