Seasonal variation in abundance and species composition of a planktonic diatom assemblage including viable cells on the bottom in matsushima bay, northeastern japan

2003 ◽  
Vol 2 (2) ◽  
pp. 160-166
Author(s):  
Ichinomiya Mutsuo ◽  
Taniguchi Akira
Keyword(s):  
Seasonal Variation ◽  
Species Composition ◽  
Diatom Assemblage ◽  
Planktonic Diatom ◽  
Viable Cells ◽  
Northeastern Japan

Seasonal variation in soil seed bank size and species composition of selected habitat types in Maputaland, South Africa

Bothalia ◽  
2007 ◽  
Vol 37 (2) ◽  
pp. 249-258 ◽  
Author(s):  
M. J. S. Kellerman ◽  
M. W. Van Rooyen
Keyword(s):  
South Africa ◽  
Seasonal Variation ◽  
Species Composition ◽  
Seed Bank ◽  
Soil Seed Bank ◽  
Woody Species ◽  
Forest Edge ◽  
Seed Banks ◽  
Habitat Types ◽  
Open Woodland

Seasonal variation in seed bank size and species composition of five selected habitat types within the Tembe Elephant Park. South Africa, was investigated. At three-month intervals, soil samples were randomly collected from five different habitat types: a, Licuati forest; b, Licuati thicket; c, a bare or sparsely vegetated zone surrounding the forest edge, referred to as the forest/grassland ecotone; d, grassland; and e, open woodland. Most species in the seed bank flora were either grasses, sedges, or forbs, with hardly any evidence of woody species. The Licuati forest and thicket soils produced the lowest seed densities in all seasons.  Licuati forest and grassland seed banks showed a two-fold seasonal variation in size, those of the Licuati thicket and woodland a three-fold variation in size, whereas the forest/grassland ecotone maintained a relatively large seed bank all year round. The woodland seed bank had the highest species richness, whereas the Licuati forest and thicket soils were poor in species. Generally, it was found that the greatest correspondence in species composition was between the Licuati forest and thicket, as well as the forest/grassland ecotone and grassland seed bank floras.

scholarly journals Seasonal Variation in Plant Species in the Vicinities of Chimdi Lake in Sunsari, Nepal

Our Nature ◽  
1970 ◽  
Vol 8 (1) ◽  
pp. 157-163
Author(s):  
T.N. Mandal ◽  
K.K.C. Poudel ◽  
T.P. Gautam
Keyword(s):  
Seasonal Variation ◽  
Species Composition ◽  
Plant Species ◽  
Lake Area ◽  
Plant Species Composition

The plant species composition of the Chimdi lake area showed seasonal variation. Altogether 54 plant species under 21 families, 41 plant species under 19 families and 29 plants species under 14 families have been recorded in summer, rainy and winter seasons respectively. Dominant families were Poaceae 22.2%, Cyperaceae 24.4% and again Poaceae 31% in the above respective seasons. The dicot and monocot members were maximum in the summer and minimum in the winter.DOI: 10.3126/on.v8i1.4323

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