ACIDIFICATION OF THE HUMIC LAKE SKJERVATJERN - EFFECTS ON THE VOLUME AND SPECIES COMPOSITION OF PHYTOPLANKTON

被引：5

作者：

BRETTUM, P

机构：

[1] Norwegian Institute for Water Research

来源：

ENVIRONMENT INTERNATIONAL | 1994年 / 20卷 / 03期

关键词：

D O I：

10.1016/0160-4120(94)90115-5

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

This paper presents the effects of the experimental acidification on the volume and composition of phytoplankton from the investigations carried out in Lake Skjervatjern in connection with the HUMEX project. The results of the phytoplankton analysis are presented from Basin A, the acidified basin, and Basin B, the control, two years before the acidification started and two years during the acidification. In Basin B, the control basin, the succession of the main groups of phytoplankton throughout the growth season remained almost identical from year to year in the investigation period. The development of the phytoplankton was almost the same in the two basins before the acidification started. The results from the acidified Basin A in 1991 and 1992 show marked changes and an almost immediate response in the phytoplankton composition and percentage of the main algae groups, compared to the reference basin. The percentage of the green algae decreased, especially the species Oocystis submarina v. variabilis, while the dinoflagellate Peridinium inconspicuum and the cryptomonads increased in number and percentage of the total volume in the acidified basin. The total volume and the primary production measurements show an increase in Basin A compared to the control in the first year of acidification treatment (1991), but a decrease in the next year.

引用

页码：313 / 319

页数：7

共 30 条

[1]

Almer, Dickson, Ekstrom, Horntrom, Miller, Effects of acidification on Swedish lakes, Ambio, 3, pp. 30-36, (1974)

[2]

Arvola, Metsala, Simild, Rask, Phyto and zooplankton in relation to water pH and humic content in small lakes in Southern Finland, Verh. Int. Ver. Linmol., 24, pp. 688-692, (1990)

[3]

Blomqvist, Oisson, Olofsson, Broberg, Enclosure experiments with low-dose additions of phophorus and nitrogen in the acidified Lake Njupfatet, Central Sweden, Int. Rev. Ges. Hydrobiol., 74, pp. 611-631, (1989)

[4]

Brettum, Alger som indikator på vannkvalitet i norske innsjøer. Planteplankton, NIVA-rapport O-86116 (2344), (1989)

[5]

Brettum, Tålegrenser for overflatevann. Planteplankton. Naturens tålegrenser, Fagrapport nr.28. 0-90137 (2800), (1992)

[6]

Findlay, Kasian, Phytoplankton responses to acidification of lake 223, Experimental Lakes Area, northwestern Ontario, Water Air Soil Pollut., 30, pp. 719-726, (1986)

[7]

Findlay, Kasian, Response of a phytoplankton community to controlled partial recovery from experimental acidiication, Can. J. Fish. Aquat. Sci., 48, pp. 1022-1029, (1991)

[8]

Gjessing, The HUMEX Project: experimental acidification of a catchment and its humic lake, Environ. Int., 18, pp. 535-543, (1992)

[9]

Havens, DeCosta, The effects of acidification and phosphorus addition on phytoplankton biomass and productivity in a circum-neutral mesotrophic lake receiving acid precipitation, Arch. Hydrobiol., pp. 443-476, (1984)

[10]

Havens, DeCosta, A comparison of phytoplankton responses to nutrient additions in acidic and circumneutral pH lakewater, Hydrobiologia, 137, pp. 211-222, (1986)

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