02302nas a2200265   4500008004100000245007200041210006900113260009400182300001200276490000700288520143100295653001101726653002601737653001801763653001401781653001601795653002401811653002001835100001701855700001301872700001801885700001501903700001501918856010301933       2005                        eng d00aMeiofauna as descriptor of tourism-induced changes at sandy beaches0 aMeiofauna as descriptor of tourisminduced changes at sandy beach  aTHE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLANDbELSEVIER SCI LTD  a245-2650 v603 aTourism has long been considered as a 'clean industry' with almost no negative effects on the environment. This study demonstrated, in two different coastal systems (Mediterranean and Baltic), that tourism related activities are particularly affecting the sandy beach meio-and nematofauna in the upper beach zone, the specific ecotone in which many meiofauna species from both the marine and the terrestrial environment congregate. Tourist upper beaches are characterized by a lower % total organic matter (%TOM), lower densities, lower diversities (absence of Insecta, Harpacticoida, Oligochaeta, terrestrial nematodes and marine Ironidae nematodes) and higher community stress compared to nearby non-tourist locations. The %TOM was found to be the single most important factor for the observed differences in meiofauna assemblage structure at tourist versus non-tourist beaches in both the Mediterranean and the Baltic region. The free-living nematode assemblages from tourist upper zones depart significantly from expectations based on random selections from the regional nematode species pool. Furthermore upper zone assemblages are characterised by a low species diversity consisting of taxonomically closely related nematode species with r-strategist features. Generally, faunal differences between tourist and non-tourist beaches are decreasing towards the lower beach zones. (c) 2004 Elsevier Ltd. All rights reserved.10aBaltic10afree-living nematodes10aMediterranean10ameiofauna10asandy beach10ataxonomic diversity10atourist impacts1 aGheskiere, T1 aVincx, M1 aWeslawski, JM1 aScapini, F1 aDegraer, S  uhttps://nematoda.myspecies.info/content/meiofauna-descriptor-tourism-induced-changes-sandy-beaches02131nas 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-isocommunitie