Preliminary data on rotifers in the interstitial of the Ninnescah river, Kansas, USA

Abstract

One-hundred five rotifer species were identified from a sandy, plains river in Kansas, USA (the Ninnescah river) . Of those rotifers identified, eighty occurred only in the interstitial sand, fifty-six in only the flow as plankton, and thirty-one from both habitats . Most species can be characterized as being more commonly found in littoral habitats, and not the interstitial or plankton . Lecane inermis (Bryce, 1892) had the highest density in the hygropsammon interstitial with an average 401 ind . 10 cm -3 at 1-3 cm depth in September 1993 .New records for the US include Encentrum wiszniewski Wulfert (1939), E. longidens Donner (1943) and E. (Parencentrum) longipes Wulfert (1960) . A small form of Lecane levistyla Olofsson (1917) is further examined and discussed .

Psammon rotifers in Central Vietnam, with the descriptions of three new species (Rotifera: Monogononta)

“…The diversity of psammon rotifers in Bau Thiem Lake (89 taxa observed, Chao2 = 99, Jack2 = 115 taxa estimated) is lower than the 119 taxa (130 samples) observed from Mikolajskie Lake, north-eastern Poland (Muirhead et al, 2006), and the 105 species identified from interstitial sand of Ninnescah river, USA (Turner, 1996). On the other hand, it is much higher than the 19 taxa (2 samples) observed from Mai Khao peat swamp on Phuket Island, Thailand (Segers & Chittapun, 2001), 24 taxa (5 samples) in Jelén Lake, 26 taxa (5 samples) in Rekowskie Lake and 10 taxa (5 samples) in Pomysko Lake, Poland (Bielańska-Grajner, 2001), and 48 taxa in Piaseczno Lake, Poland (Radwan & Bielańska-Grajner, 2001).…”

“…Accordingly, he characterised the organisms inhabiting the psammon as psammobiontic, those organisms that live exclusively, except fortuitously, in the psammon; psammophile, those that show a clear preference for the psammon, but which may also be found in the littoral; and psammoxene, those that avoid the psammon (Wiszniewski, 1937). Notwithstanding that there is a substantial body of recent literature on psammon and interstitial habitats in lotic (Schmid-Araya, 1995, 1998Turner, 1996) as well as in lentic freshwater environments (Wiszniewski, 1934a(Wiszniewski, , 1934bMyers, 1936;Pennak, 1939;Bielańska-Grajner, 2001Radwan & Bielańska-Grajner, 2001;Ejsmont-Karabin, 2004), there are particularly few studies on these habitats in (sub)tropical regions. Recently, Segers and Chittapun (2001) reported on a limited collection of interstitial rotifers from a peat swamp on Phuket Island, Thailand, and described three new rotifer species, viz.…”

The Influence of Biotic and Abiotic Factors on Psammic Rotifers in Artificial and Natural Lakes

“…Many papers have also been published on the sand and interstitial rotifers of rivers and streams (Zullini & Ricci, 1980;Pennak & Ward, 1986;Schmid-Araya, 1994, 1995Turner, 1996;Turner & Distler, 1995). There is less information on psammic rotifers living in stagnant waters (Wiszniewski, 1932(Wiszniewski, , 1934a1947;Neel, 1948;Segers, 1998;Ejsmont-Karabin, 2003;Bielan´ska-Grajner, 2001;Radwan & Bielan´ska-Grajner, 2001).…”

Biodiversity down by the flow: new records of monogonont rotifers for Italy found in the Po River

“…Lecane hastata is described in the literature as a cosmopolitan species that can be found in the periphyton and psammon of both brackish and freshwater habitats (Koste 1978;Segers 1995;Turner 1996).…”

“…Wulfert, 1939 (Figs 1I and 2H) Sporadic individuals of E. wiszniewskii were found in samples collected at Viadana throughout the summer and autumn 2009. It is reported in the literature as a typical inhabitant of the river psammon (Turner 1996;De Smet & Pourriot 1997).…”