Seasonal variation in primary production of microphytobenthos at the Isshiki intertidal flat in Mikawa Bay

被引：3

作者：

Goto N. ^{[1
]}

Mitamura O. ^{[2
]}

Terai H. ^{[1
]}

机构：

[1] Inst. for Hydrospheric-Atmosph. Sci., Nagoya University, Chikusa-ku

[2] Limnological Laboratory, School of Environmental Science, University of Shiga Prefecture, Hikone

来源：

Limnology | 2000年 / 1卷 / 2期

关键词：

Microphytobenthos; P-I curve; Photosynthesis; Seasonal and diurnal variation;

D O I：

10.1007/s102010070019

中图分类号：

学科分类号：

摘要：

Seasonal variations in photosynthetic rates by microphytobenthos and phytoplankton at the Isshiki tidal flat in Mikawa Bay were measured with a 14C combustion method. In addition, diurnal variations in the photosynthetic rate and photosynthesis versus irradiance (P-I) curves were obtained through in situ incubation. The photosynthetic rate of microphytobenthos (annual average, 13.9 ± 6.4 mg Cm-2 h-1) did not show a remarkable change, and they maintained a higher production rate than phytoplankton (annual average 9.0 ± 5.1 mg Cm-2 h-2) throughout the year. The P-I curves from in situ experiments showed that the photosynthetic activity of microphytobenthos at the laboratory irradiance (250μE m-2 s-1) was 56% of that at the maximum irradiance (1200 μE m-2 s-1) in situ. In the in situ experiments, the chlorophyll a concentration, photosynthetic rate, and activity of microphytobenthos varied greatly throughout the day, influenced by tidal submersion/emersion and daylight From an analysis of these results, it is considered that microphytobenthos contributed greatly to primary production in this ecosystem throughout the year by adapting suitably to intertidal environments.

引用

页码：133 / 138

页数：5

共 27 条

[1] Admiraal, W., The ecology of estuarine sediment-inhabiting diatoms (1984) Progress in Phycological Research, 3, pp. 269-322. , Round FE, Chapman G (eds). Biopress, Bristol
[2] Colijn, F., Jonge, V.Nd., Primary production of microphytobenthos in the Ems-Dollard Estuary (1984) Mar Ecol Prog Ser, 14, pp. 185-196
[3] Dame, R.F., Dankers, N., Uptake and release of materials by a Wadden Sea mussel bed (1988) J Exp Mar Biol Ecol, 118, pp. 207-216
[4] Decho, A.W., Lopez, G.R., Exopolymer microenvironments of microbial flora: Multiple and interactive effects on trophic relationships (1993) Limnol Oceanogr, 38, pp. 1633-1645
[5] Denicola, D.M., Periphyton responses to temperature at different ecological levels (1996) Algal Ecology: Freshwater Benthic Ecosystems, pp. 149-181. , Stevenson RJ, Bothwell ML, Lowe RL (eds). Academic Press, San Diego
[6] Edger, L.A., Diatom locomotion (1984) Progress in Phycological Research, 3, pp. 47-88. , Round FE, Chapman G (eds). Biopress, Bristol
[7] Eilers, P., Peeters, J., A model for the relationship between light intensity and the rate of photosynthesis in phytoplankton (1988) Ecol Model, 42, pp. 199-215
[8] Epstein, S.S., Microbial food webs in marine sediments. I. Trophic interactions and grazing rates in two tidal flat communities (1997) Microb Ecol, 34, pp. 188-198
[9] Goto, N., Mitamura, O., Terai, H., Ishida, N., Physicochemical features and primary production of microphytobenthos and phytoplankton at Wakaura tidal flat in Japan (1998) Jpn J Limnol, 59, pp. 391-408
[10] Haardt, H., Nielsen, G.A.E., Attenuation measurements of monochromatic light in marine sediments (1980) Oceanol Acta, 3, pp. 333-338

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