Photosynthesis, respiration and reaeration in a stream with complex dissolved oxygen pattern and temperature dependence

Correa-González, Juan Carlos; Chávez-Parga, Ma. del Carmen; Cortes, José Apolinar; Pérez-Munguía, Ricardo Miguel

doi:10.1016/j.ecolmodel.2013.11.018

Cited by 33 publications

(21 citation statements)

References 20 publications

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“…Dissolved oxygen (DO) is one of the main parameters used to assess the quality of lake water (Terzhevik et al, 2009) and it provides a useful index of the health of lakes (Correa-González et al, 2014;Williams and Boorman, 2012). In ice-covered lakes, DO is a crucial ecological parameter and a sensitive indicator of physical transport processes while the water body is isolated from the atmosphere.…”

Section: Introductionmentioning

confidence: 99%

Time-series analyses of water temperature and dissolved oxygen concentration in Lake Valkea-Kotinen (Finland) during ice season

Bai

et al. 2016

Ecological Informatics

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Section: Introductionmentioning

confidence: 99%

Time-series analyses of water temperature and dissolved oxygen concentration in Lake Valkea-Kotinen (Finland) during ice season

Bai

et al. 2016

Ecological Informatics

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“…Gas exchange coefficient ( k 2 ) and gas transfer velocity ( k ) are expected to be related to local stream temperature (Elmore and West ; Kilpatrick et al ; Demars and Manson ). Yet, temperature has been reported to be a weak predictor of k in some settings (Tobias et al ; Demars and Manson ), as well as in modeling studies (e.g., Correa‐Gonzalez et al ). For example, Tobias et al () used a modified sulfur hexafluoride (SF 6 ) tracer approach to assess variability in k ( k SF6 ) on time scales of hours (in 3 h intervals) and found that k SF6 varied by 30% over a 32 h observational period and could apportion 39% of the observed variability to changes in temperature (Demars and Manson ).…”

Section: Assessmentmentioning

confidence: 99%

Headwater gas exchange quantified from O₂ mass balances at the reach scale

Rovelli

Attard

Heppell

et al. 2018

Limnology & Ocean Methods

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Headwater streams are important in the carbon cycle and there is a need to better parametrize and quantify exchange of carbon‐relevant gases. Thus, we characterized variability in the gas exchange coefficient (k 2) and dissolved oxygen (O2) gas transfer velocity (k) in two lowland headwaters of the River Avon (UK). The traditional one‐station open‐water method was complemented by in situ quantification of riverine sources and sinks of O2 (i.e., groundwater inflow, photosynthesis, and respiration in both the water column and benthic compartment) enabling direct hourly estimates of k 2 at the reach–scale (~ 150 m) without relying on the nighttime regression method. Obtained k 2 values ranged from 0.001 h−1 to 0.600 h−1. Average daytime k 2 were a factor two higher than values at night, likely due to diel changes in water temperature and wind. Temperature contributed up to 46% of the variability in k on an hourly scale, but clustering temperature incrementally strengthened the statistical relationship. Our analysis suggested that k variability is aligned with dominant temperature trends rather than with short‐term changes. Similarly, wind correlation with k increased when clustering wind speeds in increments correspondent with dominant variations (1 m s−1). Time scale is thus an important consideration when resolving physical drivers of gas exchange. Mean estimates of k 600 from recent parametrizations proposed for upscaling, when applied to the settings of this study, were found to be in agreement with our independent O2 budget assessment (within < 10%), adding further support to the validity of upscaling efforts aiming at quantifying large‐scale riverine gas emissions.

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“…Whole-system metabolism (ecosystem respiration, ER, and gross primary production, GPP) is a central aquatic ecosystem function and is often used as an index of stream ecosystem health (Fellows et al 2006;Correa-Gonz alez et al 2014) and the trophic state (Dodds 2006(Dodds , 2007. Metabolism is affected by natural features of the aquatic and terrestrial ecosystems (e.g., biofilms, light availability, canopy cover and rainfall) as well as by the impacts from anthropogenic activities (Wang et al 2003;Frankforter et al 2010).…”

Section: Introductionmentioning

confidence: 99%

“…Wholestream shading experiments showed that photosynthesis in the stream is not responsible for the pattern. Sealed chamber measurements showed living roots of riparian vegetation had substantial respiratory activity and ammonium and nitrate uptake, and rates per unit area were greater than sand and less than silt (the other two dominant substrata), indicating roots can substantially alter in-stream biogeochemistry.Whole-system metabolism (ecosystem respiration, ER, and gross primary production, GPP) is a central aquatic ecosystem function and is often used as an index of stream ecosystem health (Fellows et al 2006;Correa-Gonz alez et al 2014) and the trophic state (Dodds 2006(Dodds , 2007. Metabolism is affected by natural features of the aquatic and terrestrial ecosystems (e.g., biofilms, light availability, canopy cover and rainfall) as well as by the impacts from anthropogenic activities (Wang et al 2003;Frankforter et al 2010).…”

mentioning

confidence: 99%

The root of the problem: Direct influence of riparian vegetation on estimation of stream ecosystem metabolic rates

Dodds

Tromboni

Saltarelli

et al. 2017

Limnol Oceanogr Letters

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Abundant living roots can be found in some streams and other shallow marine and freshwater habitats. A reach of a small Brazilian forested stream had 28% cover by live roots and exhibited diurnal trends in dissolved oxygen that could be attributed to gross primary production, but we hypothesized that activity of riparian tree roots in the channel caused this pattern. During sunny periods, trees transpire deoxygenated water from roots to the canopy but not in the dark, resulting in diurnal cycles of dissolved oxygen. Wholestream shading experiments showed that photosynthesis in the stream is not responsible for the pattern. Sealed chamber measurements showed living roots of riparian vegetation had substantial respiratory activity and ammonium and nitrate uptake, and rates per unit area were greater than sand and less than silt (the other two dominant substrata), indicating roots can substantially alter in-stream biogeochemistry.Whole-system metabolism (ecosystem respiration, ER, and gross primary production, GPP) is a central aquatic ecosystem function and is often used as an index of stream ecosystem health (Fellows et al. 2006;Correa-Gonz alez et al. 2014) and the trophic state (Dodds 2006(Dodds , 2007. Metabolism is affected by natural features of the aquatic and terrestrial ecosystems (e.g., biofilms, light availability, canopy cover and rainfall) as well as by the impacts from anthropogenic activities (Wang et al. 2003;Frankforter et al. 2010). However, we know of little work on an additional biological component in some streams, living tree roots in the open channel.Streams and other aquatic habitats (e.g., lake shores, estuarine environments) can have exposed living roots associated with nearby vegetation. These roots and their associated biofilms might be an important component of benthic metabolism but their importance to whole systems is not well *Correspondence: wkdodds@ksu.edu Author Contribution Statement: WKD, DGFC, and FT obtained funding for the project. WKD initiated the idea for the project, participated in the field work, analyzed the data, and wrote the manuscript. FT constructed chambers, participated in field work, laboratory work, data analyses, and manuscript editing. DGFC and WAS participated in field work, laboratory work, and edited the manuscript.Data Availability Statement: Data are available through the Konza Prairie LTER portal at http://www.konza.ksu.edu/knz/datasets/TextFiles/ BrazilRoot/.This is an open access article under the terms of the Creative Commons Attribution NonCommercial License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited and is not used for commercial purposes. Scientific Significance StatementWhole-system estimates of ecosystem respiration and gross primary production of aquatic systems are generally thought to reflect biological processes occurring in the water. However, living roots of plants growing next to the system might alter metabolism, and little is known of how important they are. We...

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Photosynthesis, respiration and reaeration in a stream with complex dissolved oxygen pattern and temperature dependence

Cited by 33 publications

References 20 publications

Time-series analyses of water temperature and dissolved oxygen concentration in Lake Valkea-Kotinen (Finland) during ice season

Time-series analyses of water temperature and dissolved oxygen concentration in Lake Valkea-Kotinen (Finland) during ice season

Headwater gas exchange quantified from O₂ mass balances at the reach scale

The root of the problem: Direct influence of riparian vegetation on estimation of stream ecosystem metabolic rates

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Photosynthesis, respiration and reaeration in a stream with complex dissolved oxygen pattern and temperature dependence

Cited by 33 publications

References 20 publications

Time-series analyses of water temperature and dissolved oxygen concentration in Lake Valkea-Kotinen (Finland) during ice season

Time-series analyses of water temperature and dissolved oxygen concentration in Lake Valkea-Kotinen (Finland) during ice season

Headwater gas exchange quantified from O2 mass balances at the reach scale

The root of the problem: Direct influence of riparian vegetation on estimation of stream ecosystem metabolic rates

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Headwater gas exchange quantified from O₂ mass balances at the reach scale