Details

Autor(en) / Beteiligte

• Schurr, J. M.
• Ruchti, J.

Titel

Dynamics of O 2 and CO 2 exchange, photosynthesis, and respiration in rivers from time‐delayed correlations with ideal sunlight

Ist Teil von

• Limnology and oceanography, 1977-03, Vol.22 (2), p.208-225

Erscheinungsjahr

1977

Link zum Volltext

Quelle

EZB*

Beschreibungen/Notizen

• The oxygen exchange constant, photosynthetic rate, and respiration rate for several Swiss rivers have been determined using only the continuous data record of a single oxygen electrode, the measured temperature, and an assumed ideal light intensity curve in conjunction with a simple model rate equation and a novel cross‐correlation computational technique. The method can, in favorable circumstances, be extended to determine also total carbonate dynamics from continuous pH measurements. For the Aare at Bern in March 1974, the oxygen exchange constant was 0.38 h −1 , the respiration rate was 0.6 mg liter −1 h −1 , and mean photosynthetic rate was 0.28 mg liter −1 The exchange rate for dissolved (but not hydrated or ionized) CO 2 was 0.91 times that for dissolved oxygen, and the ratio of O 2 molecules released to CO 2 molecules consumed during photosynthesis was about 1.2.