a source of light, replace all fluorescent bulbs every 3 months or measure the
illuminance or photosynthesis photon flux density every month, and replace them
as needed. Various devices associated with culturing of the microcosm are shown in
Fig. 4.7. The DO electrode that was attached to the microcosm was connected to a
DO meter outside of the incubator, and the wave patterns of the DO were continuously monitored using a data logger on a personal computer at the same time as they
were recorded. When an abnormality is observed within a wave pattern, immediately
reset the DO sensor. Preparation of the N-system used for biomass and chemical
analyses and the one used for measuring DO should be performed separately.
Additionally, both microcosms should be cultured equally until an electrode for
DO measurement is attached.
Literature Cited
Kurihara Y. Studies of Succession in a Microcosm, Science Report of Tohoku University, 4 th Ser.
(Biology), No. 37; 1978a. p. 151–160.
Kurihara Y. Studies of the Interaction in a Microcosm, Science Report of Tohoku University, 4 th
Ser. (Biology), No. 37; 1978b. p. 161–177.
Taub FB. Measurement of Pollution in Standardized Aquatic Microcosms. In: White HH, editor.
Concept in Marine Pollution Measurements. College Park: University of Maryland; 1984.
p. 139–58.
Fig. 4.7 Microcosm N-system apparatus
4 Preparation of the Microcosm N-System
37
illuminance or photosynthesis photon flux density every month, and replace them
as needed. Various devices associated with culturing of the microcosm are shown in
Fig. 4.7. The DO electrode that was attached to the microcosm was connected to a
DO meter outside of the incubator, and the wave patterns of the DO were continuously monitored using a data logger on a personal computer at the same time as they
were recorded. When an abnormality is observed within a wave pattern, immediately
reset the DO sensor. Preparation of the N-system used for biomass and chemical
analyses and the one used for measuring DO should be performed separately.
Additionally, both microcosms should be cultured equally until an electrode for
DO measurement is attached.
Literature Cited
Kurihara Y. Studies of Succession in a Microcosm, Science Report of Tohoku University, 4 th Ser.
(Biology), No. 37; 1978a. p. 151–160.
Kurihara Y. Studies of the Interaction in a Microcosm, Science Report of Tohoku University, 4 th
Ser. (Biology), No. 37; 1978b. p. 161–177.
Taub FB. Measurement of Pollution in Standardized Aquatic Microcosms. In: White HH, editor.
Concept in Marine Pollution Measurements. College Park: University of Maryland; 1984.
p. 139–58.
Fig. 4.7 Microcosm N-system apparatus
4 Preparation of the Microcosm N-System
37