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Macrozoobenthos of the sandy littoral zone in the military area between Hel and Jurata

100%

Kotwicki L., Wlodarska-Kowalczuk M., Wieczorek P.

issue 3-4

97-107

The aim of the study was to determine the distribution, composition and seasonal variability of macrozoobenthos in the sandy littoral zone of the military area between Hel and Jurata. The results of qualitative and quantitative investigations of the benthic fauna are presented. The material was collected monthly from November 1991 till November 1992 at 10 stations situated in the sandy littoral zone (0.5-1 m depth) on the Puck Bay shore of the Hel Peninsula. A total of 17 macrofaunal taxa were identified. At each station 2 or 3 subsamples were collected with a 225 cm2 Petersen grab. The average abundance and wet weight of particular taxa were calculated. Bathyporeia pilosa, Hediste diversicolor and Oligochaeta were most frequent taxa in the study area. Polychaeta and Bivalvia constituted up to 93% of the bottom fauna biomass, Hediste diversicolor was the dominant species.

Sandy coastlines - are there conflicts between recreation and natural values?

52%

Weslawski J. M., Urban-Malinga U.-M. B., Urban-Malinga B., Kotwicki K. L., Kotwicki L., Opalinski O. K., Opalinski K., Szymelfenig S. M., Szymelfenig M., Dutkowski D. M., Dutkowski M.

Oceanological Studies

2000

vol. 29

issue 2

5-18

Unlike dunes, sandy beaches and the littoral zone are usually regarded as non-vulnerable. The biodiversity and biomass of interstitial organisms are low. How-ever, recent findings have shown that marine sands transfer energy very ef-fectively, and that chemical and biological reactions take place faster there than in fine-grained sediments. The importance of the microphytobenthos and bacteria to this system is little known. The effects of recreational pressure (trampling, beach cleaning and nourishment) are not well understood. A pilot study from the Baltic Sea shows the importance of trampling as a form of bioturbation, a very effective way of fragmenting and mixing organic matter with the sand. The high diversity of diatoms and meiofauna in undisturbed beaches may act as an effective biological filter for some types of pollutants, while less diverse, but more abundant biota in disturbed areas are more effective in processing organic matter (self-cleaning of the beach).

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2 Oceanological Studies

1 2000

1 1999

2 Kotwicki L.

1 Dutkowski D. M.

1 Dutkowski M.

1 Kotwicki K. L.

1 Opalinski K.

1 Opalinski O. K.

1 Szymelfenig M.

1 Szymelfenig S. M.

1 Urban-Malinga B.

1 Urban-Malinga U.-M. B.

1 Weslawski J. M.

1 Wieczorek P.

1 Wlodarska-Kowalczuk M.

Search results

Macrozoobenthos of the sandy littoral zone in the military area between Hel and Jurata

Sandy coastlines - are there conflicts between recreation and natural values?