02250nas a2200229   4500008004100000245012400041210006900165260006900234300001200303490000700315520138200322653001601704653001401720653001801734653001901752653002001771653002101791100002801812700002101840700002201861856013701883       2007                        eng d00aCombined influence of river discharge and wind on littoral nematode communities of a river mouth area of Lake Constance0 aCombined influence of river discharge and wind on littoral nemat  aVAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDSbSPRINGER  a231-2420 v413 aThe littoral nematode community adjacent to a river mouth (River Schussen) on Lake Constance (Germany) was studied from February 1999 to January 2000 in order to determine the influence of stress resulting from fluctuations in river discharge on local nematode assemblages. Additionally, the influence of wind as a second important stress factor was considered. Six sample sites were chosen, reflecting a gradient of river influence within the broader river mouth area. Nematode communities, varying in a mean range from 121 to 165 ind/10 cm(2), were found to differ significantly in terms of abundance, feeding type composition and species diversity. Deposit feeders were most abundant at all sites followed by chewers. Deposit feeders were affected mainly by wind events, while species diversity and the occurrence of chewers were influenced mainly by river discharge. The impact of both these stress factors was modified by a third variable, water level. Moderate and high levels of combined habitat stress led to significant changes in community structure. Under conditions of calm weather and low discharge, reduced species diversity and an increased predominance of deposit feeders were observed. In most cases, species diversity was found to be higher under moderate stress conditions, an observation that offers support for Connel's Intermediate Disturbance Hypothesis.10adisturbance10adiversity10afeeding types10ahabitat stress10aspatial pattern10atemporal pattern1 aWitthoeft-Muehlmann, A.1 aTraunspurger, W.1 aRothhaupt, K., O.  uhttps://nematoda.myspecies.info/content/combined-influence-river-discharge-and-wind-littoral-nematode-communities-river-mouth-area-l02308nas a2200265   4500008004100000245007100041210006900112260012200181300000900303490000800312520141700320653001801737653001401755653001801769653001701787653001801804653000701822653001401829100001401843700001901857700002001876700002101896700002401917856010101941       2009                        eng d00aNematode assemblages in a nature reserve with historical pollution0 aNematode assemblages in a nature reserve with historical polluti  aC/O PROF DR E SCHOCKAERT, DEPT SBG, LIMBURGS UNIV CENTRUM, B-3590 DIEPENBEEK, BELGIUMbSOC ROYALE ZOOLOGIQUE BELGIQUE  a3-140 v1393 aNematodes, and especially nematode communities, have significant potential as bio-indicators. The present study aimed to assess thee nematode community structure of several sites with different historical pollution Long-term polluted municipal waste-, tar- and sludge- sites were compared with less disturbed annex sites At each site heavy metal and PAHs concentrations were measured together with soil texture classes. pH and total organic matter Identification of three hundred nematodes at each location resulted in the discrimination of 63 genera from 32 different families of which the Cephalobidae. Belonolaimidae, Tylenchidae, Hoplolaimidae, Belonolaimidae and Plectidae were the most abundant families The sampling sites harbour significantly different nematode communities and significant differences of life-strategy-related parameters (cp-groups, MI Indexes) were observed. The significant augmentation of the proportion of the cp 2 nematodes in historically-polluted sites was especially informative. Omitting the cp 1 group from the MI (=MI2-5) better reflects putative historical pollution-induced community changes However, the current study did not reveal significant relationships between historical pollution and the feeding type composition, or the Shannon-Wiener diversity The observed results are critically assessed in the light of possible flaws such as sampling and analyzing limitations.10abio-indicator10adiversity10afeeding types10aheavy metals10alife strategy10aMI10apollution1 aBert, Wim1 aManhout, Joeri1 aVan Colen, Carl1 aBorgonie, Gaetan1 aDecraemer, Wilfrida  uhttps://nematoda.myspecies.info/content/nematode-assemblages-nature-reserve-historical-pollution