High-frequency measurements of productivity of planktonic algae using rugged nondispersive infrared carbon dioxide probes

Pertti Hari, Jukka Sakari Pumpanen, Jussi Huotari, Pasi Kolari, John Grace, Timo Vesala, Anne Ojala

Tutkimustuotos: ArtikkelijulkaisuArtikkeliTieteellinenvertaisarvioitu

Kuvaus

We have constructed a system based on commercially available inexpensive NDIR CO2 sensors to continuously monitor CO2 concentrations in water bodies. Here we demonstrate its use in a boreal humic lake. With the system, we collect high frequency data with a 10-min time resolution for determination of CO2 consumption and production. We use and modify the computational methods commonly used in forest ecology to enable characterization of aquatic primary production. To demonstrate the advantages of the method, we present the results against the observations from the long-term monitoring program applying traditional bottle methods. With the probes, we can detect a clear, photosynthesis-driven daily pattern in the CO2 concentration and determine the CO2 consumption or production resulting in more than a 10-fold improvement in the time resolution when compared with traditional incubation methods. The measuring frequency is high enough to determine the dependence of photosynthesis on irradiance. The high-frequency data highlights the inherent problems of discrete bottle incubations and bring into question their reliability. Our free water approach yielded productivity and mineralization rates that were clearly higher than obtained with incubations.
Alkuperäiskielienglanti
LehtiLimnology and Oceanography: Methods
Vuosikerta6
Sivut347-354
Sivumäärä8
ISSN1541-5856
TilaJulkaistu - 2008
OKM-julkaisutyyppiA1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä, vertaisarvioitu

Tieteenalat

  • 118 Biotieteet
  • 219 Ympäristön bioteknologia
  • 117 Maantiede ja ympäristötieteet

Lainaa tätä

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title = "High-frequency measurements of productivity of planktonic algae using rugged nondispersive infrared carbon dioxide probes",
abstract = "We have constructed a system based on commercially available inexpensive NDIR CO2 sensors to continuously monitor CO2 concentrations in water bodies. Here we demonstrate its use in a boreal humic lake. With the system, we collect high frequency data with a 10-min time resolution for determination of CO2 consumption and production. We use and modify the computational methods commonly used in forest ecology to enable characterization of aquatic primary production. To demonstrate the advantages of the method, we present the results against the observations from the long-term monitoring program applying traditional bottle methods. With the probes, we can detect a clear, photosynthesis-driven daily pattern in the CO2 concentration and determine the CO2 consumption or production resulting in more than a 10-fold improvement in the time resolution when compared with traditional incubation methods. The measuring frequency is high enough to determine the dependence of photosynthesis on irradiance. The high-frequency data highlights the inherent problems of discrete bottle incubations and bring into question their reliability. Our free water approach yielded productivity and mineralization rates that were clearly higher than obtained with incubations.",
keywords = "118 Biological sciences, 219 Environmental biotechnology, 117 Geography, Environmental sciences",
author = "Pertti Hari and Pumpanen, {Jukka Sakari} and Jussi Huotari and Pasi Kolari and John Grace and Timo Vesala and Anne Ojala",
year = "2008",
language = "English",
volume = "6",
pages = "347--354",
journal = "Limnology and Oceanography: Methods",
issn = "1541-5856",
publisher = "Wiley",

}

High-frequency measurements of productivity of planktonic algae using rugged nondispersive infrared carbon dioxide probes. / Hari, Pertti; Pumpanen, Jukka Sakari; Huotari, Jussi; Kolari, Pasi; Grace, John; Vesala, Timo; Ojala, Anne.

julkaisussa: Limnology and Oceanography: Methods, Vuosikerta 6, 2008, s. 347-354.

Tutkimustuotos: ArtikkelijulkaisuArtikkeliTieteellinenvertaisarvioitu

TY - JOUR

T1 - High-frequency measurements of productivity of planktonic algae using rugged nondispersive infrared carbon dioxide probes

AU - Hari, Pertti

AU - Pumpanen, Jukka Sakari

AU - Huotari, Jussi

AU - Kolari, Pasi

AU - Grace, John

AU - Vesala, Timo

AU - Ojala, Anne

PY - 2008

Y1 - 2008

N2 - We have constructed a system based on commercially available inexpensive NDIR CO2 sensors to continuously monitor CO2 concentrations in water bodies. Here we demonstrate its use in a boreal humic lake. With the system, we collect high frequency data with a 10-min time resolution for determination of CO2 consumption and production. We use and modify the computational methods commonly used in forest ecology to enable characterization of aquatic primary production. To demonstrate the advantages of the method, we present the results against the observations from the long-term monitoring program applying traditional bottle methods. With the probes, we can detect a clear, photosynthesis-driven daily pattern in the CO2 concentration and determine the CO2 consumption or production resulting in more than a 10-fold improvement in the time resolution when compared with traditional incubation methods. The measuring frequency is high enough to determine the dependence of photosynthesis on irradiance. The high-frequency data highlights the inherent problems of discrete bottle incubations and bring into question their reliability. Our free water approach yielded productivity and mineralization rates that were clearly higher than obtained with incubations.

AB - We have constructed a system based on commercially available inexpensive NDIR CO2 sensors to continuously monitor CO2 concentrations in water bodies. Here we demonstrate its use in a boreal humic lake. With the system, we collect high frequency data with a 10-min time resolution for determination of CO2 consumption and production. We use and modify the computational methods commonly used in forest ecology to enable characterization of aquatic primary production. To demonstrate the advantages of the method, we present the results against the observations from the long-term monitoring program applying traditional bottle methods. With the probes, we can detect a clear, photosynthesis-driven daily pattern in the CO2 concentration and determine the CO2 consumption or production resulting in more than a 10-fold improvement in the time resolution when compared with traditional incubation methods. The measuring frequency is high enough to determine the dependence of photosynthesis on irradiance. The high-frequency data highlights the inherent problems of discrete bottle incubations and bring into question their reliability. Our free water approach yielded productivity and mineralization rates that were clearly higher than obtained with incubations.

KW - 118 Biological sciences

KW - 219 Environmental biotechnology

KW - 117 Geography, Environmental sciences

M3 - Article

VL - 6

SP - 347

EP - 354

JO - Limnology and Oceanography: Methods

JF - Limnology and Oceanography: Methods

SN - 1541-5856

ER -