Wyniki wyszukiwania

1

Seasonal variation of epiphytic algae in a marsh area [southern Iraq]

100%

Kassim T. I., Al-Saadi H. A.

Acta Hydrobiologica

|

1995

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tom 37

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nr 3

153-161

2

On the seasonal variation of the epipelic algae in marsh areas [southern Iraq]

100%

Kassim T. I., Al-Saadi H. A.

Acta Hydrobiologica

|

1994

|

tom 36

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nr 2

191-200

Qualitatively, the epipelic algae was dominated by Bacillariophyceae (87.3%), followed by Cyanophyceae (8.2%) and Chlorophyceae (2.7%). The dominant species were Cocconeis placentula var. euglypta and Nitzschia palea. Bacillariophyceae also showed the highest total cell number with two peaks, namely in August and April in an open area, and March and July in a closed area. A significant correlation between chlrophyll ɑ and the total cell number was found in the closed area but not in the open one.

3

Seasonal variation of epiphytic algae in a marsh area [Southern Iraq]

100%

Kassim T. I., Al-Saadi H. A.

Acta Hydrobiologica

|

1995

|

tom 37

|

nr 3

Potamogeton lucens L., and Ceratophyllum demersum L. were collected monthly in two ecosystems in Al-Hammar marsh with clear and turbid water. The dominant species of epiphytic algae at both stations and plants were Achnanthes minutissima Kütz., Cocconeis placentula var. euglypta (Ehr.) Cl., and Fragilaria spp. The cell number showed seasonal variation both on plants and at stations, but in general there were no distinct differences in algal species and population density between the two macrophytes in each area. Marsh with turbid water offered better conditions for algal growth thanks to nutrient enrichment.

4

Phytoplankton of Samarra Reservoir [Iraq]

80%

Al-Lami A. A., Sabri A. W., Kassim T. I., Rasheed K. A.

Acta Hydrobiologica

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1996

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tom 38

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nr 3-4

The phytoplankton community in three stations at Samarra Reservoir was studied seasonally. A total of 149 taxa were identified, ten of which were new additions to the Iraqi flora. The density ranged from 0.43 to 18.56 10³ ind. cm-³, Bacillariophyceae were found to be the dominant group. Variation in species dominance between seasons and stations was observed. The density of phytoplankton, chlorophyll ɑ concentration, and the share of Cyanophyta and Euglenophyta were higher at the station polluted with municipal sewage.

Ograniczanie wyników

4 Acta Hydrobiologica

4 Kassim T. I.

3 Al-Saadi H. A.

1 Al-Lami A. A.

1 Rasheed K. A.

1 Sabri A. W.

1 1996

2 1995

1 1994

Seasonal variation of epiphytic algae in a marsh area [southern Iraq]

On the seasonal variation of the epipelic algae in marsh areas [southern Iraq]

Seasonal variation of epiphytic algae in a marsh area [Southern Iraq]

Phytoplankton of Samarra Reservoir [Iraq]