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vol. 1, nr. 1 (2003)
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Seasonal changes of selected morphometrical features of emergent macrophytes in trophically different lakes
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Joanna Sender
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vol. 1 (2003), nr. 1,
pp. 169-175
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abstract:
The research was carried out in 1998-1999 in four lakes located in Łęczyńsko-Włodawskie Lakeland: mesotrophic Lake Piaseczno, slightly eutrophic Lake U¶ciwierz, eutrophic Lake Łukie and hypertrophic Lake Głębokie U¶cimowskie. The seasonal changes of selected morphometrical features, biomass and density of 3 species of helophytes (Typha latifolia, Typha angustifolia and Schoenoplectus lacustris) were scrutinized. The investigated features were clearly differentiated in each of these lakes. Schoenoplectus lacustris and Typha latifolia reached the highest values of examined features in eutrophic Lake Łukie, the lowest in mesotrophic Lake Piaseczno; Typha angustifolia – the highest in hypertrophic Lake Głębokie U¶cimowskie, the lowest in slightly eutrophic Lake U¶ciwierz, respectively. In lakes all examined the highest values of features appeared in summer time, the lowest in autumn and early spring.
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keywords:
helpohytes, lake, seasonal changes, morphometry
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original in:
Polish
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