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Do physical-chemical water properties reflect the macrophyte and open water induced spatial heterogeneity of a shallow lake?

Pełechaty M.

Oceanological and Hydrobiological Studies

2006

Vol. 35, No.4

369-386

The aim of this study was to determine if water properties reveal spatial variability related to the presence or absence or types and structures of vegetation in a shallow lake with a long period of water overturn (Lake Jarosławieckie, Wielkopolski National Park, midwestern Poland). Results of a two-year study indicate the absence of statistically significant differentiation among the studied macrophyte communities and open water areas. Temporal changes appeared to be more significant. With the exception of temperature, pH, and conductivity, studied properties showed lower values during the vegetative seasons in comparison with those in spring (total phosphorus) or both spring and fall (total nitrogen). Spatial versus temporal heterogeneity and the differentiation of water properties are discussed in light of data from the literature regarding other lakes.