Quantifying spatial differences in metabolism in headwater streams

González‐Pinzón, Ricardo; Haggerty, R.; Argerich, A.

doi:10.1086/677555

Cited by 37 publications

(56 citation statements)

References 35 publications

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“…3). If we assume that Raz was transformed primarily in the hyporheic zone because of the existence of enhanced chemical gradients and a larger volume of colonized sediments (the case in other field studies by Haggerty et al 2008, Argerich et al 2011, González-Pinzón et al 2014, the Raz-Rru results suggest a larger extent of GW-SW interactions in reach 3 (x = 360-450 m) than in reach 1 (x = 125-350 m). In contrast to the limitations on using the conservative-tracer analysis to directly link storage dynamics and GW-SW interactions, the Raz-Rru system provides a direct measure of integrated, reach-scale metabolic reduction of material introduced from the stream.…”

Section: Reach-scale Analysismentioning

confidence: 82%

A field comparison of multiple techniques to quantify groundwater–surface-water interactions

et al. 2015

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Groundwater-surface-water (GW-SW) interactions in streams are difficult to quantify because of heterogeneity in hydraulic and reactive processes across a range of spatial and temporal scales. The challenge of quantifying these interactions has led to the development of several techniques, from centimeter-scale probes to whole-system tracers, including chemical, thermal, and electrical methods. We co-applied conservative and smart reactive solute-tracer tests, measurement of hydraulic heads, distributed temperature sensing, vertical profiles of solute tracer and temperature in the stream bed, and electrical resistivity imaging in a 450-m reach of a 3 rd -order stream. GW-SW interactions were not spatially expansive, but were high in flux through a shallow hyporheic zone surrounding the reach. NaCl and resazurin tracers suggested different surface-subsurface exchange patterns in the upper ⅔ and lower ⅓ of the reach. Subsurface sampling of tracers and vertical thermal profiles quantified relatively high fluxes through a 10-to 20-cm deep hyporheic zone with chemical reactivity of the resazurin tracer indicated at 3-, 6-, and 9-cm sampling depths. Monitoring of hydraulic gradients along transects with MINI-POINT streambed samplers starting ∼40 m from the stream indicated that groundwater discharge prevented development of a larger hyporheic zone, which progressively decreased from the stream thalweg toward the banks. Distributed temperature sensing did not detect extensive inflow of ground water to the stream, and electrical resistivity imaging showed limited large-scale hyporheic exchange. We recommend choosing technique(s) based on: 1) clear definition of the questions to be addressed (physical, biological, or chemical processes), 2) explicit identification of the spatial and temporal scales to be covered and those required to provide an appropriate context for interpretation, and 3) maximizing generation of mechanistic understanding and reducing costs of implementing multiple techniques through collaborative research.

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Section: Reach-scale Analysismentioning

confidence: 82%

A field comparison of multiple techniques to quantify groundwater–surface-water interactions

et al. 2015

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“…Beaulieu et al 2013;Dodds et al 2013;Griffiths et al 2013;Yates et al 2013;Gonz alez-Pinz on et al 2014;Hotchkiss & Hall 2014;Roley et al 2014), including the interaction between these factors depending on the type of riparian zone of the stream ). We found spatial variation in stream metabolism in Valley Creek, as hypothesized, with GPP, ER and NEP being lower at the forested location versus the open location.…”

Section: Discussionmentioning

confidence: 99%

The influence of riparian vegetation and season on stream metabolism of Valley Creek, Minnesota

Hornbach

Beckel

Hustad

et al. 2015

Journal of Freshwater Ecology

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Climate change will undoubtedly influence stream ecosystems by affecting water temperature, discharge, and riparian vegetation phenology. It has been suggested that increasing the extent of riparian buffers may help to mitigate these impacts and contribute to ecosystem resilience. Measures of stream metabolism are one way to examine the changes in ecosystem function as they respond to climate change and management strategies used to respond to these impacts. In this study we examine the influence of riparian vegetation (open vs. forest) and season on ecosystem metabolism in a small stream in MN, USA. The stream was heterotrophic regardless of the type of riparian vegetation but the presence of a forested buffer depressed gross primary production (GPP) and also resulted in lower (less negative) ecosystem respiration (ER) and net ecosystem production (NEP). We also found significant daily and seasonal variation in GPP, ER, and NEP. Stream metabolism was more variable in the fall than in the summer. The study design was complicated by the fact that there were differences in groundwater dynamics between the two locations; the forested location was a losing stream while the open location was a gaining stream. Despite the fact that groundwater input likely influenced the oxygen dynamics of the open location, the impact of the forest buffer outweighed the impact of groundwater. The presence of a forested riparian corridor resulted in decreased GPP likely through the attenuation of light. The low O 2 groundwater input at the open location likely biased measures of ER and NEP. Modifying stream corridors with increased forest vegetation to offset the impacts of climate change will likely result in less in-stream primary production and a shift to a more heterotrophic system. This shift will undoubtedly influence many ecosystem functions in-stream systems.

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“…Haggerty et al [12] developed a metabolically-active transient storage (MATS) model to demonstrate that these tracers may be used to quantify the metabolic activity associated with TS and to assess interactions within small streams. Specifically, the Raz-Rru system allows the measuring of aerobic respiration and the quantification of spatial differences in metabolism in headwater streams [13,14]. TS has not been separated into STS and HTS in the above works, and the whole TS was assumed to be metabolically active.…”

Section: Introductionmentioning

confidence: 99%

Transport of Conservative and “Smart” Tracers in a First-Order Creek: Role of Transient Storage Type

Yakirevich

Shelton

Hill

et al. 2017

Water

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Using "smart" tracers such as Resazurin (Raz) allows assessment of sediment-water interactions and associated biological activity in streams. We compared two approaches to simulate the effects of transient storage (TS) on the transport of conservative and reactive tracers. The first approach considered TS as composed of metabolically active and metabolically inactive compartments, while the second model approach accounted for the surface transient storage (STS) and hyporheic transient storage (HTS). Experimental data were collected at a perennial first-order creek in Maryland, MD, USA, by injecting the conservative tracer bromide (Br) and the reactive (Raz) tracer and sampling water at two weir stations. The STS-HTS approach led to a more accurate simulation of Br transport and tails of the Raz and its product Rezorufin (Rru) breakthrough curves. Sediments support large microbial communities, and the STS-HTS model in creeks provides additional parameters to characterize the habitats of microbial water-quality indicator organisms.

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Quantifying spatial differences in metabolism in headwater streams

Cited by 37 publications

References 35 publications

A field comparison of multiple techniques to quantify groundwater–surface-water interactions

A field comparison of multiple techniques to quantify groundwater–surface-water interactions

The influence of riparian vegetation and season on stream metabolism of Valley Creek, Minnesota

Transport of Conservative and “Smart” Tracers in a First-Order Creek: Role of Transient Storage Type

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