Benthic primary production during emersion: In situ measurements and potential primary production in the Seine Estuary (English Channel, France)

Simultaneous measurements with two types of incubators were made on replicate samples both in the incubators and in situ in the ocean. Both incubators used sunlight and blue glass filters to simulate light conditions at depths in the ocean. The first gave measurements of column production 1.58 times those in situ. This was due to the fact that at depths greater than 20 m the incubator gave much higher results with no significant relation to those measured in situ. In the second incubator the accuracy of reproduction of oceanic light conditions was improved by reducing reflected light and using a balance-by-depth twin photometer system for determining the depths of sampling. The measurements of column production in the second incubator were 1.03 times the in situ values.

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Erratum Dissolved organic carbon concentration controls benthic primary production: Results from in situ chambers in north-temperate lakes

Limnology and Oceanography ◽

10.1002/lno.10238 ◽

2015 ◽

Vol 61 (1) ◽

pp. 407-407

Author(s):

Sean C. Godwin ◽

Stuart E. Jones ◽

Brian C. Weidel ◽

Christopher T. Solomon

Keyword(s):

Organic Carbon ◽

Dissolved Organic Carbon ◽

Primary Production ◽

Carbon Concentration ◽

Temperate Lakes ◽

Benthic Primary Production ◽

Organic Carbon Concentration ◽

North Temperate Lakes

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Mosses in High-Arctic lakes: in situ measurements of annual primary production and decomposition

Polar Biology ◽

10.1007/s00300-015-1806-9 ◽

2015 ◽

Vol 39 (3) ◽

pp. 543-552 ◽

Cited By ~ 7

Author(s):

T. Riis ◽

K. S. Christoffersen ◽

A. Baattrup-Pedersen

Keyword(s):

Primary Production ◽

High Arctic ◽

In Situ Measurements ◽

Arctic Lakes ◽

Annual Primary Production

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Estimation of gross primary production in wheat from in situ measurements

International Journal of Applied Earth Observation and Geoinformation ◽

10.1016/j.jag.2010.02.006 ◽

2010 ◽

Vol 12 (3) ◽

pp. 183-189 ◽

Cited By ~ 16

Author(s):

Chaoyang Wu ◽

Xiuzhen Han ◽

Jinsheng Ni ◽

Zheng Niu ◽

Wenjiang Huang

Keyword(s):

Primary Production ◽

Gross Primary Production ◽

In Situ Measurements

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Seasonal phytoplankton production in the western English Channel 1964–1974

Journal of the Marine Biological Association of the United Kingdom ◽

10.1017/s0025315400056873 ◽

1978 ◽

Vol 58 (4) ◽

pp. 943-953 ◽

Cited By ~ 45

Author(s):

G. T. Boalch ◽

D. S. Harbour ◽

E. I. Butler

Keyword(s):

Primary Production ◽

Carbon Fixation ◽

Statistical Analyses ◽

Annual Production ◽

Phytoplankton Production ◽

English Channel ◽

Cell Counts

Over a period of 10 years, 1964–74, primary production has been measured at three stations across the western English Channel using the 14C method. Results for carbon fixation, cell counts and mean seasonal production are illustrated. Statistical analyses show that, at two of the three stations, carbon fixation in 1966 was significantly greater than expected and that annual production differs significantly at each of the stations. The variations observed are discussed in relation to other changes recorded in the area during the same period. A deck incubator used for simulated in situ14C experiments is illustrated.

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A Comparison of Benthic Microalgal Production Measured by C14 and Oxygen Methods

Journal of the Fisheries Research Board of Canada ◽

10.1139/f73-055 ◽

1973 ◽

Vol 30 (2) ◽

pp. 309-312 ◽

Cited By ~ 18

Author(s):

C. Hunding ◽

B. T. Hargrave

Keyword(s):

Dissolved Oxygen ◽

Primary Production ◽

Sandy Beach ◽

Sediment Cores ◽

Benthic Primary Production ◽

Sources Of Error ◽

Undisturbed Sediment

A comparison of estimates of benthic primary production on a sandy beach measured by in situ oxygen and laboratory C14 methods showed that both methods gave similar measures of the magnitude of production. Sources of error in each method are discussed. Measures of C14 uptake offer sensitivity when production is low, but when undisturbed sediment cores can be obtained, production is most easily measured by following changes in dissolved oxygen.

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