Abstract
Sandy microhabitats and their fauna are usually characterised as extremely unstable and unpredictable. The aim of the paper is to evaluate the scale and the character of these phenomena. Rotifer composition and density and abiotic variables were investigated every half a day in the hygroarenal of the eutrophic Mikołajskie Lake.
In total, 62 species were found with only two species occurring permanently throughout the study period. Densities in general were extremely variable and strong fluctuations were observed even at 12 h intervals. On average, psammophilic rotifers dominated the community (74%) while psammoxenes and psammobionts constituted only 18 and 8%, respectively. The most stable group were the psammophiles. The results support the presumption that fluctuating environments are ideal for organisms that reproduce quickly, may colonize vacant habitats rapidly and have wide niches, i.e. eurybionts.
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Ejsmont-Karabin, J. Short Time-Response of Psammic Communities of Rotifera to Abiotic Changes in their Habitat. Hydrobiologia 546, 423–430 (2005). https://doi.org/10.1007/s10750-005-4285-0
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DOI: https://doi.org/10.1007/s10750-005-4285-0