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-l02423nas a2200265   4500008004100000245014800041210006900189260010100258300001400359490000700373520140100380653001301781653001401794653001601808653001101824653001401835653003101849653002201880653002701902100001901929700003101948700002201979700001902001856013702020       2009                        eng d00aNematode diversity and its relation to the quantity and quality of sedimentary organic matter in the deep Nazare Canyon, Western Iberian Margin0 aNematode diversity and its relation to the quantity and quality   aTHE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLANDbPERGAMON-ELSEVIER SCIENCE LTD  a1521-15390 v563 aSamples collected in the deep Nazare Canyon and at the adjacent slope, during the HERMES RRS Discovery D297 cruise (2005), were analysed for metazoan meiofauna, nematode structure and diversity and its relation to quality and quantity of sedimentary organic material. The amount and quality of organic matter available for direct consumption was much higher in the canyon compared to the slope and positively correlated with high nematode abundances (795-1171 ind. 10 cm(-2)) and biomass (93.2-343.5 mu g dry weight 10 cm(-2)). thus leading to higher standing stocks. Canyon nematode assemblages also showed particular adaptations (e.g. higher trophic complexity, variability of nematode morphology, and presence of opportunistic genera) to canyon conditions, particularly in the deeper sediment layers. The Nazare Canyon's nematode diversity was slightly lower than that of the adjacent slope and its assemblages were characterised by a higher dominance of certain genera. Still, the canyon contributes considerably to total Western Iberian Margin diversity due to different assemblages present compared to the slope. Furthermore, the harsh conditions in terms of hydrodynamic disturbance and the high organic matter flux are likely to have a negative impact on the establishment of species rich meiobenthic communities, especially in the canyon axis. (C) 2009 Elsevier Ltd. All rights reserved.10adeep sea10adiversity10aMeiobenthos10aNazare10anematodes10aSedimentary organic matter10aSubmarine canyons10aWestern Iberian Margin1 aIngels, Jeroen1 aKiriakoulakis, Konstadinos1 aWolff, George, A.1 aVanreusel, Ann  uhttps://nematoda.myspecies.info/content/nematode-diversity-and-its-relation-quantity-and-quality-sedimentary-organic-matter-deep-naz02308nas 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-pollution02131nas a2200277   4500008004100000245012000041210006900161260008400230300001200314490000700326520114200333653001101475653001401486653002601500653001901526653001801545653003101563653002601594100001701620700001301637700002101650700001501671700001501686700001501701856013701716       2005                        eng d00aNematodes from wave-dominated sandy beaches: diversity, zonation patterns and testing of the isocommunities concept0 aNematodes from wavedominated sandy beaches diversity zonation pa  a24-28 OVAL RD, LONDON NW1 7DX, ENGLANDbACADEMIC PRESS LTD ELSEVIER SCIENCE LTD  a365-3750 v623 aSpatial patterns of nematode community structure from two geographically spaced intermediate. micro-tidal beaches (i.e. Mediterranean and Baltic) were investigated. Differences in the nematode assemblages were found to be significantly different and related to the morphodynamic characteristics of the studied zones (upper beach. swash/breakers and subtidal). Highest nematode densities and species diversities were recorded on the coarse-grained, more physically controlled. Italian beach in contrast to the more chemically controlled Polish beach. This is in contrast to the worldwide patterns of macrofaunal coinmunities. As demonstrated by higher taxonomic distinctness measurements, upper beaches were found to harbour species from both the marine and terrestrial ecosystem and are considered to be important ecotones between these adjacent systems. The swash/breaker zones are characterised by the loss of distinctive species caused by the high water percolation in these zones. The concept of parallel ecological communities 'isocommunities' is only supported for the upper beach zones. (C) 2004 Elsevier Ltd. All rights reserved.10aBaltic10adiversity10afree-living nematodes10aisocommunities10aMediterranean10asandy beach morphodynamics10ataxonomic relatedness1 aGheskiere, T1 aVincx, M1 aUrban-Malinga, B1 aRossano, C1 aScapini, F1 aDegraer, S  uhttps://nematoda.myspecies.info/content/nematodes-wave-dominated-sandy-beaches-diversity-zonation-patterns-and-testing-isocommunitie02770nas a2200253   4500008004100000245013000041210006900171260008400240300001200324490000700336520180700343653001102150653001402161653001402175653001402189653002002203653002202223100002702245700003002272700003202302700001802334700002702352856013702379       2006                        eng d00aComparison of nematode communities in Baltic and North Sea sublittoral, permeable sands - Diversity and environmental control0 aComparison of nematode communities in Baltic and North Sea subli  a24-28 OVAL RD, LONDON NW1 7DX, ENGLANDbACADEMIC PRESS LTD ELSEVIER SCIENCE LTD  a224-2380 v703 aThe structure of free-living nematode communities was investigated seasonally at two sandy locations representing typical shallow sublittotal, permeable environments of the North Sea and the Baltic Sea. At the Baltic study site the chlorophyll and organic carbon concentrations in the sediment were, on average, four times lower than at the North Sea. Highest nematode densities (1674-4100 ind. 10 cm(-2)) and a higher number of free-living nematode genera (66) were recorded in the North Sea (Baltic: 206-1227 ind. 10 cm(-2), 30 genera). Despite lower salinity and lower food availability the less dense and less diverse Baltic nematode community was similar in generic composition to the North Sea community. At the North Sea site, all trophic groups according to Wieser's classification were present with omnivores/predators, dominated by Viscosia, prevailing and followed by epistrate-feeders. In the food-limited Baltic community, non-selective deposit feeders (mainly Ascolaimus, Axonolaimus and Daptonema) and omnivores/predators dominated by Enoplolaimus were the most abundant trophic groups while selective deposit feeders were absent or their contribution was negligible. An analysis of the vertical generic distribution revealed highest diversity of the Baltic community in deeper sediment layers, below the sediment surface affected by ripple migration and near the interface of oxic and anoxic conditions. The diversity pattern in the North Sea sediment was more variable but generally showed high diversity in the upper centimetre of the sediment. These observations suggest that food supply and sediment oxygenation are the most important factors influencing the vertical pattern of nematode generic diversity in sublittoral, permeable sands. (c) 2006 Elsevier Ltd. All rights reserved.10aBaltic10adiversity10anematodes10aNorth Sea10apermeable sands10asublittoral sands1 aUrban-Malinga, Barbara1 aHedtkamp, Stefanie, I. C.1 avan Beusekom, Justus, E. E.1 aWiktor, Jozef1 aWeslawski, Jan, Marcin  uhttps://nematoda.myspecies.info/content/comparison-nematode-communities-baltic-and-north-sea-sublittoral-permeable-sands-diversity-a01843nas a2200253   4500008004100000245013000041210006900171260009700240300001200337490000700349520088000356653001901236653001401255653001401269653002601283653002201309100002001331700002001351700001801371700001901389700002401408700002001432856013701452       2007                        eng d00aMorphometry, energetics and diversity of free-living nematodes from coasts of Bizerte lagoon (Tunisia): an ecological meaning0 aMorphometry energetics and diversity of freeliving nematodes fro  aSTATION BIOLOGIQUE PLACE GEORGES TEISSIER, 29680 ROSCOFF, FRANCEbCAHIERS DE BIOLOGIE MARINE  a121-1370 v483 aAnalyses of water quality in the Bizerte lagoon showed their relative low oxygenation during September 2002 compared to December 2001. Sediment variables appeared directly dependent on the silt/clay distribution and sewage from the metallurgic factory "El Fouledh". Nematode abundances were negatively influenced by silt/clay, organic matter, metals and chlorophyll a content. The individual nematode body size was clearly related to the distribution of two dominant species, Terschellingia longicaudata (Linhomoeidae) and Paracomesoma dubium (Comesomatidae). Shannon-Wiener diversity index values were the lowest in the South-Western stations characterized by higher level of organic matter and a weaker effect of pollution, in "Baie des carrieres" and "Menzel Jemil" areas. The sediment metals were the key factors controlling the respiration rate of meiobenthic nematodes.10aBizerte lagoon10abody size10adiversity10ameiobenthic nematodes10arespiration rates1 aBoufahja, Fehmi1 aBeyrem, Hamouda1 aEssid, Naceur1 aAmorri, Jalila1 aMahmoudi, Ezzeddine1 aAissa, Patricia  uhttps://nematoda.myspecies.info/content/morphometry-energetics-and-diversity-free-living-nematodes-coasts-bizerte-lagoon-tunisia-eco