Freshwater Gastrotricha of Poland. VII. Gastrotricha of extremely eutrophicated water bodies

Abstract

INSTTTUT ZOOLOGII FRAGMENTA FAUNISTICA Tom 30 W arszaw a, 1086.11.15 Mr 16 Jacek K i s i e l e w s k i Freshwater G astrotricha of Poland. VII. G astrotricha of extremely eutrophicated water bodies [W ith 1 figure and 3 tables] A bstract. In extrem ely eutropliicated Avaters of Poland 71 species of Gastrotricha were found, including 50 identified ones. Eight species occurred only in this environm ent, whereas other 14 found optim um conditions there. Higher taxa as a whole are connected wdth this environ m ent: genus Polymerurus and fam ilies D asydytidae and Neogosseidae. The fauna Ava s m ost abundant in Avater bodies with the association Hydrocharitetuvi morsus-ranae. All available data on freslnvater Gastrotricha from Poland are recapitulated. The present paper is the last in a series of seven publications on Gastrotricha fauna of various environm ents of Polish inland waters. The first paper (K i s i e l e w s k i and K i s i e l e w s k a 1986-cited fu rth er in the te x t as "I ") discussed th e Gastrotricha of m ountain w aters, both oligotrophic lakes, sources and stre ams and eutrophic w ater bodies. A ltogether 32 identified species were found th e re. The second paper (K i s i e l e w s k a and K i s i e l e w s k i 1986a-cited fu rth er on as "I I ") concerns Gastrotricha of young shallow lakes of marine origin on th e B altic coast-26 species. The th ird paper (K i s i e l e w s k a and K i s i e l e w s k i 1986b-cited further on as "I I I ") deals w ith Gastrotricha of a v ast complex of prim ary forests of the Białowieża F orest and eutrophic w ater bodies of the B ia łowieża Glade-48 identified species. In th e fourth paper N e s t e r u k (1986)-ci ted further on as "IV "-describes th e Gastrotricha fauna from fish ponds near Siedlce-39 species. K i s i e l e w s k a and K i s i e l e w s k i (1986c-cited further on as "V ") present the results of investigations on Gastrotricha of alder woods-41 species. The paper before th e last (S z k u t n i k 1986-cited further on as "V I") deals with Gastrotricha of astatic w ater environm ents overgrown with rush vegatation-43 species. Altogether, in all papers, 72 identified species and forms of http://rcin.org.pl 26S J. K isielew ski Gastrotricha were found, of which 07 belong to the family Chaetonotidae and 5 to Dasydytidae. The present paper deals with the gastrotrichan fauna of highly eutrophicated water bodies. Gastrotricha of these environm ents have been already inve stigated in Poland. B o s z o z a k (1935, 1968), when investigating w ater bodies in central G reat Poland, has given a num ber of species from waters of a high degree of fertility. D ata on Gastrotricha of eutrophic w aters are given in two of m y taxonomic papers (K i s i e l e w s k i 1974, 1979); full faunistic data, p artly used in papers mentioned, have been included here. K i s i e l e w s k a (1982) lias exam ined Gastrotricha of two complexes of highly eutrophicated peat-hags near Siedlce. Finally, in some papers of th e series (III, IV and VI) d ata on Gastrotricha of this...

Spatio-temporal changes in the abundance of the populations of the gastrotrich community in a shallow lake of tropical Africa

“…7) in our samples. This result resembles the observation of Kisielewski (1986) and of Nesteruk (1996b) where high densities of Gastrotricha were found in eutrophic water bodies in Poland. In general, these results also confirm the fact that Gastrotricha are abundant worldwide in lakes and ponds (Strayer & Hummon 2001), at least in the tropical freshwaters (Kisielewski 1991), even in the pelagic water.…”

“…The highest abundances were found mostly at the beginning and during the rainy season when there is an important sedimentation of organic matter with recirculation (Ze´baze´Togouet 2000). High abundance of Gastrotricha is often the result of the eutrophication of the milieu (Angeli 1980;Kisielewski 1986). Kisielewski (1986) showed that the density of the Gastrotricha is positively correlated with the habitat productivity.…”

“…High abundance of Gastrotricha is often the result of the eutrophication of the milieu (Angeli 1980;Kisielewski 1986). Kisielewski (1986) showed that the density of the Gastrotricha is positively correlated with the habitat productivity. Since Kemka et al (2004) showed the Municipal Lake of Yaounde was highly eutrophic and very likely this can explain the high observed abundances.…”

A phylogenetic approach to species delimitation in freshwater Gastrotricha from Sweden

“…Kisielewski (1981) gave additional data on one specimen from Poland. Moreover, several specimens were found during a faunistical survey, but no further taxonomical data are given Kisielewski, 1986;Szkutnik, 1986). Kisielewski (1991) described the subspecies L. minor chaetifer from Brazil, which is characterized by two simple parafurcal spines and more or less well-developed ventrolateral spines.…”

Comparison of gastrotrich fauna on elodeids and in bottom sediments of lakes of different trophic status (the region Polesie Lubelskie, Eastern Poland)

“…Species composition and percentage contribution of particular species in the total gastrotrich fauna were determined in various types of waters (Kisielewska 1982;Kisielewski 1981Kisielewski , 1986Nesteruk 1986Nesteruk , 1996bSzkutnik 1986). Vertical distribution, density and biomass of Gastrotricha were also analyzed (Nesteruk 1991(Nesteruk , 1996a.…”