{"refrec":{"BRefID":5837,"RR":"<b>Lock, K.</b> (1996). Intertidale hyperbenthische gemeenschappen van zandstranden. MSc Thesis. Universiteit Gent. Mariene Biologie. Instituut voor Dierkunde. Vakgroep Morfologie, Systematiek en Ecologie: Gent.  95 pp.","BEntID":5837,"PublicFlag":1,"CheckedFlag":0,"wosflag":null,"vabbflag":null,"RefStringPartII":". MSc Thesis. Universiteit Gent. Mariene Biologie. Instituut voor Dierkunde. Vakgroep Morfologie, Systematiek en Ecologie: Gent.  95 pp.","DocTypID":5,"DocType":"Book/Monograph","MarineFlag":1,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Lock, K.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Lock, K.","Englishabstract":"The intertidal hyperbenthos of sandy beaches was sampled with a handsledge in winter and summer. 10 stations along the Belgian coast were sampled on each occasion. Two additional localities in the north of France were sampled during summer. Mysidacea dominated the hyperbenthos, both in terms of density and in terms of biomass. Other important taxa were Decapoda, Pisces, Amphipoda, Annelida, Coelenterata and Copepoda. Several multivariate statistical analyses revealed clear differences between winter and Summer hyperbenthic communities. The species composition of samples taken in the north of France deviated from that of the other samples. The remaining samples of each season could be divided in a rich and a poor community. The densities and the diversity of the so-called rich communities and the French community were much higher than those in the so-called poor communities. <i>Mesopodopsis slabberi</i> Was often very abundant during SUmmer while <i>Schistomysis kervillei</i> and <i>S. spiritus</i> reached highest densities in winter. It was remarkable that the structure of the population for one species could be very different according to the place of sampling. For every species a positive correlation was found between the length of the gravid females and the number of embryo's in their marsupium. The nauplius-stage always spent a longer time in the marsupium, the embryo stage a smaller period and the postnauplius-stage an even shorter period. For both species of the genus Schistomysis, the number of postnauplius-stages in the marsupium was significantly lower than the amount of embryo stages. The intramarsupial mortality for these species was a lot higher in the intertidal zone than the values that were calculated by Mauchline (1980). This could be caused by the extremely energetic conditions in the intertidal zone. Diel patterns: A day cycle was carried out in Zeebrugge to study the diel pattems in the intertidal hyperbenthos. For this purpose every hour samples were taken with a handsledge. Throughout the 24 hour period Mysidacea Were the most abundant group, but Decapoda and Pisces Contributed most to total biomass. Coelenterata, Isopoda and Cumacea also reached high densities. Four communities could be distingUished by classification and ordination. A first division separated the day samples from the night samples. Light-intensity was an important variable in the Canonical Correspondence Analysis. Both communities Were subsequently divided into an ebb-tide and a flood-tide situation. Tidal height was an important variable in the Canonical Correspondence Analysis. The species-richness was always lower at high tide than at low tide, while the night-samples had a higher diversity than the day-samples.","AbstractOtherLang":"Met een handslee werd een zomer- en een wintersituatie van het intertidaal hyperbenthos van zandstranden bemonsterd. Voor iedere staalnamecampagne werden 10 stations onderzocht en in de zomer werden bovendien op twee plaatsen stalen genomen aan de Noord-Franse kust. Mysidacea zijn zowel qua densiteitals qua biomassa de belangrijkste vertegenwoordigers van het hyperbenthos. Andere belangrijke groepen zijn Decapoda, Pisces, Amphipoda, Annelida, Coelenterata en Copepoda. Met de verschillende genieenschapsanalyses werden de zomer- en de winterstalen duidelijk van elkaar gescheiden. De Noord-Franse stalenweken sterk af van de overige stalen. Pe overige stalen kunnen per seizoen opgedeeld worden in een rijke en een arme gemeenschap. In de zogenaamde rijke gemeenschappen en de Franse gemeenschap waren de densiteiten en de diversiteit hoger dan in de zogenaamde arme stalen. Tijdens de zomer was <i>Mesopodopsis slabberi</i> vaak zeer abundant terwijl <i>Schistomysis kervillei</i> en <i>S. spiritus</i> grote densiteiten bereikten in de winter. Het was hierbij opmerkelijk dat de populatie-opbouw voor een soort sterk kon verschillen naargelang de staalnameplaats. Voor elke soort werd er een positieve correlatie gevonden tussen de lengte van de graviede vrouwtjes en het aantal embryo's in hun marsupium. Het nauplius-stadium bracht altijd de grootste tijd door in het marsupium, het embryonaal stadium een kleinere periode en het postnauplius-stadium nog korter. Voor beide soorten van het geslacht Schistomysis was het aantal postnauplius-stadia in het marsupium significant lager dan het aantal embryonale stadia. De intramarsupiale sterfte voor deze soorten was in het intertidaal trouwens veel hoger dan de waarden die Mauchline (1980) berekende, wat zou kunnen te wijten zijn aan de extreme condities in het intertidaal. Diurnale patronen: In Zeebrugge werd een dagcyclus uitgevoerd om de diurnale patronen van het intertidaal hyperbenthos te bestuderen. Hiervoor werden er om het uur stalen genomen met een handslee. Mysidacea waren de abundanste groep maar Decapoda en Pisces vormden veruit het grootste aandeel wat de biomassa betreft. Ook Coelenterata, Isopoda en Cumacea bereikten hoge densiteiten. Er konden Vier gemeenschappen onderscheidenworden door middel van klassificatie en ordinatie. Een eerste opdeling werd gemaakt tussen de dagstalen en de nachtstalen, waarbij de lichtintensiteit een belangrijke parameter was bij een directe gradientenanalyse. Beide gemeenschappen werden op hun beurt opgedeeld in een eb- en een vloedsituatie. Hier was de getijhoogte een belangrijke omgevingsvariabele bij een directe gradientenanalyse. De soortenrijkdom was bij vloed steeds lager dan bij eb terwij de nachtstalen een grotere diversiteit hadden dan de dagstalen.","BibLvlCode":"M","StandardTitle":"Intertidale hyperbenthische gemeenschappen van zandstranden","OrigTitleLangCode":"nl","OrigTitleLangCodeExtended":"dut","OrigTitleLangID":41,"DateLastModified":{"date":"2024-12-10 01:33:17.368041","timezone_type":1,"timezone":"+01:00"},"UserAccessRight":null,"UserAccID":null,"AuthorKeywords":null,"OtherDescriptors":null,"Notes":null,"AnaPub":null,"MonPub":1996,"DateUpdate":"2013-12-17","DateCreate":"2001-01-26","SecASFANote":null,"ConfID":null,"PeerRev":null,"VlizCoreFlag":1,"WoScode":null,"VABBcode":null,"OpenAcc":0},"refs":null,"anarec":null,"monrec":{"MonID":5837,"ISBN":null,"PubliDate":1996,"IssueDate":null,"Volume":null,"Issue":null,"Pagination":"95","Place":"Gent","Edition":null,"BRefXtra":null,"BRefXtraRR":null,"SerID":null,"SerRR":null,"Ser2BRefID":null,"Ser2RR":null,"StandardTitleSer":null,"ISSN":null,"AbbrevSer":null,"Degree":"MSc","ThesisID":5837,"InsID":471,"Acronym":"UGent","FullStandardName":"Universiteit Gent","ToPubliDate":null,"SerNotes":null,"eISBN":null,"Pages":95},"serrec":null,"relations":null,"relationsRev":null,"addrec":null,"othpubs":null,"ownerships":null,"authors":[{"AutName":"Lock","Firstname":null,"Initials":"K.","Affiliation":null,"Discriminator":null,"CorporateFlag":0,"BEntID":5837,"AutID":643,"OrderNr":1,"DegrID":null,"EditorFlag":0,"CorrespFlag":0,"IllustratorFlag":0,"ReviserFlag":0,"TranslatorFlag":0,"InsAcronym":null,"InsFSN":null,"ORCID":"0000-0003-2214-0947","PersID":2826,"InsID":null}],"mapdetails":null,"datasets":null,"monographs":null,"monparts":null,"serparts":null,"BEntOpen":null,"BEntPrivate":null,"availability":[{"BInstID":226660,"LibID":36,"BRefID":5837,"EmbargoDate":null,"FullEmbargoDate":null,"PhysMedID":16,"hasOCRd":1,"ShelfLocCode":"226660","RFID":null,"PaidValue":null,"Medium":"Server","Description":"Interne VLIZ documenten","Acronym":"VLIZ","Library":"Vlaams Instituut voor de Zee","DutchTerm":"Non-open access","URL":null,"ClassifID":228,"Classification":"Non-open access","ReqLink":1,"ClassifTypID":3,"URLLocation":"https://www.vliz.be/imisdocs/publications/","SubDir":1,"InternalReq":1,"LoggedInReq":1,"Disclaimer":"Disclaimer_VLIZ_Intern","DutchDisclaimer":"<p>Deze publicatie is enkel beschikbaar voor persoonlijk gebruik binnen de Innovocean site <br />en mag op geen enkele manier verder worden verspreid.</p>","FileFormat":".pdf","FileDescr":"pdf","InsPub":1,"InsID":36,"FileFormID":6,"LendableFlag":1,"PublicFlag":1,"orderLib":"A","Notes":null,"AccConID":null,"AccessConstraint":null,"LicURL":null}],"litstyles":[{"LitStyID":7,"Style":"Dissertation"}],"thespers":[{"PersID":19,"Surname":"Vincx","Firstname":"Magda","Initials":"M.","Role":"Promotor"}],"arch2discl":null,"SERpubls":null,"MONpubls":null,"pictures":[],"thestermsPath":null,"thestermsASFA":null,"taxtermsASFA":null,"geotermsASFA":null,"collections":null,"conf":null,"proj":null,"Physdatasets":null,"spcols":{"5":{"SpName":"Belgian theses on marine topics","SpColID":5,"ParSpColID":396,"TopParID":396,"ShortName":"Belgian marine theses","URLLocation":null,"LibID":null,"OpenRepoFlag":0,"SpTypID":null,"TopParIDNotWebsite":396,"SpColPath":"vliz:biblio/Belgian marine theses"},"222":{"SpName":"BMB - Belgische Mariene Bibliografie","SpColID":222,"ParSpColID":null,"TopParID":null,"ShortName":"BMB","URLLocation":null,"LibID":36,"OpenRepoFlag":null,"SpTypID":null,"TopParIDNotWebsite":null,"SpColPath":"BMB"},"422":{"SpName":"Section Marine Biology","SpColID":422,"ParSpColID":null,"TopParID":null,"ShortName":"MarBiol","URLLocation":null,"LibID":null,"OpenRepoFlag":null,"SpTypID":null,"TopParIDNotWebsite":null,"SpColPath":"MarBiol"},"396":{"SpName":"VLIZ Bibliographies","SpColID":396,"ParSpColID":null,"TopParID":null,"ShortName":"vliz:biblio","URLLocation":null,"LibID":null,"OpenRepoFlag":null,"SpTypID":null,"TopParIDNotWebsite":null,"SpColPath":"vliz:biblio"}},"doi":null,"publs":[{"PublID":1854,"PublName":"Universiteit Gent. 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