Organism-Substrate Relationships in Lowland Streams

Total Page:16

File Type:pdf, Size:1020Kb

Organism-Substrate Relationships in Lowland Streams Harry H. Tolkamp Organism-substrate relationships in lowland streams Proefschrift terverkrijgin gva nd egraa dva n doctori nd e landbouwwetenschappen, opgeza gva nd erecto rmagnificus , dr.H.C .va nde rPlas , hoogleraar in de organische scheikunde, in het openbaar te verdedigen op vrijdag 6 februari 1981 des namiddags te vier uur in de aula van de Landbouwhogeschool te Wageningen. Centre for Agricultural Publishing and Documentation Wageningen - 1980 Abstract Tolkamp,H.H . (1980)Organism-substrat e relationships inlowlan d streams.Agric . Res.Rep .(Versl .landbouwk .Onderz. )907 ,ISB N9 022 0075 9 6, (xi)+ 211p. ,8 0 tables,4 3figs. ,31 9refs. ,Eng .an dDutc hsummaries , 14appendices . Also:Doctora l thesis,Wageningen . Afiel d andlaborator y studyo nth emicrodistributio n ofbotto m dwellingmacro - invertebrates toinvestigat e therol eo fth estrea m substrate inth edevelopmen t andpreservatio no fth emacroinvertebrat e communities innatural ,undisturbe d low­ land streams isdescribed .Fiel d datao nbotto m substrates and faunawer e collected between 1975an d 1978fro mtw oDutc hlowlan d streams.Substrate swer e characterized byth enatur ean dth eamoun to forgani cdetritu san d theminera l particle sizes:i n afiel d classificationo nth ebasi so fth evisuall y dominant particle sizes; ina grain-size classificationo n thebasi so f exactparticle-siz e analysis inth elabora ­ tory.Substrat epreferenc e for8 4macroinvertebrat e specieswa s demonstrated using theInde xo fRepresentation . Substrate-selection experimentswer e conducted ina laborator y stream for three Trichopteraspecie s Qiiaropterna sequax, Chaetopteryx viVtosa and Serioostoma per­ sonation) andon eEphemeropter a species (.Ephemera danica). An experiment on the colonizationo fartificia l substrates inth efiel dwa s also conducted. Fromth efiel d data,severa l faunal groups couldb edistinguished , each group madeu po fspecie swit h similar substratepreferences .Detaile d datao n themicro - distribution inrelatio n tosubstrat eparticl e sizear egive n for 26 species,whic h represent thevariou s taxonomicalunit stha t compose thefauna l groups:Trichopter a (5species) ,Ephemeropter a (1species) ,Plecopter a (1species) ,Coleopter a (3species) , Amphipoda (1species) ,Dipter a (15species ,amon gwhic h 13specie so fChironomidae) . Themicrodistributio n isdiscusse d inrelatio n tocase-buildin g behaviour, life cycle andfoo dpreferences .Fo r several speciessubstrat epreference sma yb e different for different development stageso r indifferen t seasons. Iti sconclude d thatmos t speciessho wdistinc t preferences fora specific sub­ strate.Th esmal l scalespatia lvariatio n insubstrat ecompositio n of the streambe d isessentia l forth eexistenc eo fman y lowland streammacroinvertebrat e species. Freedescriptors :substrat epreference ,microdistribution , benthos,macroinvertebrates , particlesize ,detritus ,organi cmatter ,habita t preference, environmental factors, lowland stream, laboratory stream Communication NatureConservatio nDepartmen t 211. This thesiswil l alsob epublishe d asAgricultura l Research Reports907 . © Centrefo rAgricultura l Publishing andDocumentation ,Wageningen ,1980 . üw^,0* thlS b°0k Bay be reProduced °rPublishe d inan y form,b y print photoprint, microfilm oran yothe rmean swithou t writtenpermissio n from thepublisher s Woord vooraf Sindsi ki n197 3voo rhe teers tkenni smaakt eme td ewetenschappelijk e aspecten vand ehydrobiologi ehe bi kgeprobeer dm eee ndee lva ndi tvakgebie d eigent emake n onderd estimulerend e leidingva nDrs .J.J.P . Gardeniers.Jean ,zonde rjou wnie taf ­ latende ideeënstroom, critischebeschouwingen ,enthousiasm ee ndidactisch e talenten wasdi tproefschrif te rnie tgekomen .Nie t alleenhe bi khe tva kva nj egeleerd ,n a mijnstudi ebe nj ezowe lee ngewaardeer dmento ral see ngoe dvrien dgebleven .Talloze - discussies liggenachte r ons,waarva nvel eto tdie pi nd enach tduurde nterwij lonz e wederhelftend eavon d alleeno fsame ndoorbrachten .Mij ndank . Mijnpromotor ,Prof.Dr .M.F .Mörze rBruyn sbe ni kdan kverschuldig dvoo rd e gelegenheiddi ehi jmi jboo do mdi tonderzoe kbi jd evakgroe pNatuurbehee rt ever ­ richten.Mij nbelangstellin g voorhe tnatuurbehee r isvoo ree nbelangrij kdee lt e dankenaa nU winteressant e collegese nverhalen .Teven sbe ni kU zee r erkentelijk voorU wwaardevoll e adviezentijden sd ebewerkin gva nhe tmanuscript . Prof.C.W .Stortenbeke rwi li kbedanke nvoo r zijnstimulerend e commentaaro p hetmanuscript ,hetgee n zoweld estij lals.d eopze tte ngoed ekwam . Bijzondere dankbe ni kverschuldig daa ndegene ndi ehebbe nbijgedrage naa nd e totstandkomingva ndi tproefschrift : - Ir.J.Chr . Bothbego nme td evoorbereidin gva ndi tonderzoek .Vee lva njou w ideeën zijni ndez estudi everwerkt .Teven she bj ehe tmanuscrip tmeni gmaa lcritisc hdoor ­ genomene nd ediscussie sdi ehiero pvolgde nhe bi kzee r gewaardeerd. - Ir.P.F.M .Verdonscho tverrichtt e tweedeelonderzoeke nva ndez estudie ,welk e zoveel interessante informatie opleverdenda tw edi telder s zullenpubliceren .Dank ­ baarhe bi kgebrui kgemaak tva nj enoest ewerklus te nj eideeë no mgegeven st ever - werken. - Ir.0 .Kno ldee dhe tonderzoe knaa rd eafbraa kva ndivers ebladsoorten .Oo kdi t werk zullenw eelder spubliceren ,maa rd evel ediscussie sdi ew evoerde nhebbe n wezenlijkbijgedrage nto td ehuidig evor mva nhe tmanuscript . - Dr.H.K.M .Molle rPillo tvoo rhe tdeterminere nva nvel emuggelarven . - Dr.L.W.G .Higle rvoo rhe tdeterminere nva ndivers ekokerjuffers . - Drs.J.G.M .Cuppe nvoo rhe tcontrolere nva nmoeilijk ekevers . - Dehere nI .Wolter se nJ.A.J .Beye rvoo rd everleend ehul pbi jhe tuitzoeke ne n analyserenva nd emonsters . - Ir. H.Breme rvoo rhe tschrijve nva nd emeest e computerprogramma's,waarva ni k veelhe bgeleerd . - Drs.P .va nIerse lvoo rzij nassistenti ebi jhe tclusteren . - Ir.D .Davelaa rvoo rhe t schrijvenva nenkel e aanvullendeprogramma's . - Dehee rI .Mad eSuwetj avoo rhe tschrijve nva nd eplotterprogramma's . - Dr.L .va nde rPla svoo rhe tbeschikbaa rstelle nva nanalysefaciliteite nvoo r de korrelgrootteanalyseva nd ebodemmonster s opd evakgroe pBodemkund ee nGeologie . - Dehee rA .Engelsm avoo rzij nassistenti ebi jdez eanalyses . - Mej.W .Hofste evoo rhaa rhul pbi jd ekorrelgrootteanalyses . - Dehere nJ .va nde rGoo re nH .Paardekope r enhu nmedewerker sva nd ewerkplaat s vanhe tBiotechnio nvoo rd ebou wva nd ekunstbee ke nkweekgoot . - Drs.J .Beunde rvoo rhe tbeschikbaa rstelle nva nruimt evoo rd e laboratorium­ experimenteni nhe tBiotechnion . - Ir.J .Meulema ne nIr .J . denDui kvoo rhu nhul p alse rwee reen s ietsmi s ging metee nprogramma . - Dehee rM .Keul svoo r zijnstatistisch e adviezen. - Mevr.M .Gazenbeek-Dobbi evoo rd ecorrecti eva nd eengels etekst . - Mej.A.M.N.G .Salde nvoo rhe ttype nva nd e literatuurlijsten. - Mej.E .Geurtse nva nd eafdelin gTekstverwerkin gvoo rhe tsnell ee n nauwkeurige typewerkva nhe tdefinitiev emanuscript . - Dehere nI.R.C .Cressi ee nR.J.P .Aalpo lva nPudo cvoo rd ecorrecti e en redactionele vormgevingva nhe tmanuscript . - Demedewerker sva nd evakgroe pNatuurbehee rvoo rd eprettig ewerksfee r end evel e goedecontacten . - Velecollega' s inbinnen -e nbuitenlan dvoo rhe ttoezende nva noverdrukke n end e velemondeling ee nschriftelijk eadviezen . Tenslottemaa rnie ti nd e laatsteplaats ,dan k ikElle nvoo rd etalloz e uren dieeigenlij kvoo ron ssame nwaren ,maa rdi ei kaa ndi tproefschrif tbesteedde . Curriculum vitae HarryHendri kTolkam pwer d geboreno p3 septembe r 1952t eAalte nt emidde nva nd e toenno ggrotendeel snatuurlijk ebeken .Hi jvolgd e inAalte nhe tkleuter- ,basis -e n voortgezet onderwijs enbrach tvee lva n zijnvrij etij ddoo ri nd ebosse ne nd ebeke n ind eomgeving .N ahe tbehale nva nhe t einddiplomaHBS-B ,bego nhi ji n196 9me td e studiei nd eMilieuhygiën e (N42)aa nd eLandbouwhogeschoo l teWageningen ,waa rhi ji n 1972he tkandidaats -e ni n197 5he tdoctoraalexame n aflegde.Voo rhe t doctoraal examenwer dhe tonderzoe kvoora l gerichto phe twaterkwaliteitsbeheer : Natuurbeheer- Hydrobiologie bijProf.Dr .M.F .Mörze r Bruynso.l.v .Drs.J.J.P .Gardeniers ;Waterzui ­ veringbi jProf.P.G .Foh ro.l.v . Ir.J.G.de nBlanken ,T.H .Delft ,Afd .Gezondheids - techniek;Microbiologi e bijProf.E.G .Mulde ro.l.v . W.L.va nVee n(f) . Nahe tdoctoraa lexame nwa shi jwerkzaa mal swetenschappelij kambtenaa rbi jd e VakgroepNatuurbehee rva nd eLandbouwhogeschoo l totdecembe r 1975,vervolgen sal s wetenschappelijk assistentbi jdezelfd eVakgroe p voorhe tverrichte nva n voorliggend onderzoek enva njun i 1979 totjanuar i 1980wedero mal swetenschappelij k ambtenaar. Sindsdien ishi jwerkzaa m alshydrobioloo gbi jhe tWaterscha p Zuiveringschap Limburg teRoermond . Contents 1 Introduction 1.1 General 1 1.2 Purposeo fth e investigation 4 1.3 Hypotheses 5 1.4 Researchapproac h " •7 2 Description of the streams 2.1 TheSnijdersveerbee k ' 11 2.2 The Ratumsebeek 16 Methods 1g 3.1 Fieldprocedur e 16 3.1.1 Selectiono fsamplin g sites 16 3.1.2 Samplingdate s 17 3.1.3 Fieldclassificatio no f substrates 18 3.1.4 Samplingmetho d 20 3.1.5 Additional collections 20 3.2 Laboratoryprocedur e 20 3.2.1 Samplesortin g 20 3.2.2 Substrateanalysi s 23 3.2.3 Macrofauna analysis 25 3.3 Laboratory experiments 25 3.3.1 Artificialstrea mchanne lexperiments 25 3.3.1.1 Thestrea m 27 3.3.1.2 Substratesteste d 27 3.3.1.3 Experimentaldesig n 29 3.3.1.4 Speciesteste d 29 3.3.1.5 Theinfluenc eo fcurren tvelocit yo n substrate selection 30 3.3.2 Rearingchanne l 30 3.3.3 Experimentswit hTrichopter a 30 3.3.3.1 Case-building experiments 31 3.3.3.2
Recommended publications
  • Water Beetles
    Ireland Red List No. 1 Water beetles Ireland Red List No. 1: Water beetles G.N. Foster1, B.H. Nelson2 & Á. O Connor3 1 3 Eglinton Terrace, Ayr KA7 1JJ 2 Department of Natural Sciences, National Museums Northern Ireland 3 National Parks & Wildlife Service, Department of Environment, Heritage & Local Government Citation: Foster, G. N., Nelson, B. H. & O Connor, Á. (2009) Ireland Red List No. 1 – Water beetles. National Parks and Wildlife Service, Department of Environment, Heritage and Local Government, Dublin, Ireland. Cover images from top: Dryops similaris (© Roy Anderson); Gyrinus urinator, Hygrotus decoratus, Berosus signaticollis & Platambus maculatus (all © Jonty Denton) Ireland Red List Series Editors: N. Kingston & F. Marnell © National Parks and Wildlife Service 2009 ISSN 2009‐2016 Red list of Irish Water beetles 2009 ____________________________ CONTENTS ACKNOWLEDGEMENTS .................................................................................................................................... 1 EXECUTIVE SUMMARY...................................................................................................................................... 2 INTRODUCTION................................................................................................................................................ 3 NOMENCLATURE AND THE IRISH CHECKLIST................................................................................................ 3 COVERAGE .......................................................................................................................................................
    [Show full text]
  • Water Measurer | Buglife Page 1 of 5
    Water measurer | Buglife Page 1 of 5 Join Buglife Donate Volunteer Membership costs just £2 per month Saving the small things that run the planet Follow us Search Sign in Register for free My basket (0) Contact Home About Bugs What We Do Get Involved News & Blog Advice Shop You are here: Home > About Bugs > Water measurer See more bugs Water measurer Select species Fast facts Buglife Latin name: Hydrometra stagnorum e-newsletter Notable feature: These animals have hydrophobic Keep up to date on (water fearing) hairs on campaigns, events and their undersides or on news with the Buglife their legs e-newsletter Rarity in UK: Rare / Common Sign up here Common water-measurer (Hydrometra stagnorum) Oil beetle hunt © (c) Entomart Your sightings Water-measurers are so called because they can be Log in to submit your watched slowly walking around on the surface of Seefindings the map ditches and ponds, apparently pacing out the distances between points! Water-measurers are part of the insect Bug identifier ‘boat’ community - whirligig beetles, water crickets, pond skaters and water-measurers all live on top of https://www.buglife.org.uk/bugs-and-habitats/water-measurer 24/02/2016 Water measurer | Buglife Page 2 of 5 What's that the water surface. All these animals have hydrophobic bug? (water fearing) hairs on their undersides or on their Use our Q&A legs. The repulsive force between the water and these to identify UK hair are sufficient to support the weight of the insects Identifybugs. bugs on the water surface. Bug facts 60% of all invertebrate species are declining More bug facts For younger bug lovers Download Bug Buddies Packed with fun activities, guides and Downloadbug info (PDF) https://www.buglife.org.uk/bugs-and-habitats/water-measurer 24/02/2016 Water measurer | Buglife Page 3 of 5 These insects are scavengers or carnivores which feed on bodies of small animals which land on or rise up to the water’s surface - dead or alive.
    [Show full text]
  • CHIRONOMUS Newsletter on Chironomidae Research
    CHIRONOMUS Newsletter on Chironomidae Research No. 25 ISSN 0172-1941 (printed) 1891-5426 (online) November 2012 CONTENTS Editorial: Inventories - What are they good for? 3 Dr. William P. Coffman: Celebrating 50 years of research on Chironomidae 4 Dear Sepp! 9 Dr. Marta Margreiter-Kownacka 14 Current Research Sharma, S. et al. Chironomidae (Diptera) in the Himalayan Lakes - A study of sub- fossil assemblages in the sediments of two high altitude lakes from Nepal 15 Krosch, M. et al. Non-destructive DNA extraction from Chironomidae, including fragile pupal exuviae, extends analysable collections and enhances vouchering 22 Martin, J. Kiefferulus barbitarsis (Kieffer, 1911) and Kiefferulus tainanus (Kieffer, 1912) are distinct species 28 Short Communications An easy to make and simple designed rearing apparatus for Chironomidae 33 Some proposed emendations to larval morphology terminology 35 Chironomids in Quaternary permafrost deposits in the Siberian Arctic 39 New books, resources and announcements 43 Finnish Chironomidae 47 Chironomini indet. (Paratendipes?) from La Selva Biological Station, Costa Rica. Photo by Carlos de la Rosa. CHIRONOMUS Newsletter on Chironomidae Research Editors Torbjørn EKREM, Museum of Natural History and Archaeology, Norwegian University of Science and Technology, NO-7491 Trondheim, Norway Peter H. LANGTON, 16, Irish Society Court, Coleraine, Co. Londonderry, Northern Ireland BT52 1GX The CHIRONOMUS Newsletter on Chironomidae Research is devoted to all aspects of chironomid research and aims to be an updated news bulletin for the Chironomidae research community. The newsletter is published yearly in October/November, is open access, and can be downloaded free from this website: http:// www.ntnu.no/ojs/index.php/chironomus. Publisher is the Museum of Natural History and Archaeology at the Norwegian University of Science and Technology in Trondheim, Norway.
    [Show full text]
  • Dipterists Forum
    BULLETIN OF THE Dipterists Forum Bulletin No. 76 Autumn 2013 Affiliated to the British Entomological and Natural History Society Bulletin No. 76 Autumn 2013 ISSN 1358-5029 Editorial panel Bulletin Editor Darwyn Sumner Assistant Editor Judy Webb Dipterists Forum Officers Chairman Martin Drake Vice Chairman Stuart Ball Secretary John Kramer Meetings Treasurer Howard Bentley Please use the Booking Form included in this Bulletin or downloaded from our Membership Sec. John Showers website Field Meetings Sec. Roger Morris Field Meetings Indoor Meetings Sec. Duncan Sivell Roger Morris 7 Vine Street, Stamford, Lincolnshire PE9 1QE Publicity Officer Erica McAlister [email protected] Conservation Officer Rob Wolton Workshops & Indoor Meetings Organiser Duncan Sivell Ordinary Members Natural History Museum, Cromwell Road, London, SW7 5BD [email protected] Chris Spilling, Malcolm Smart, Mick Parker Nathan Medd, John Ismay, vacancy Bulletin contributions Unelected Members Please refer to guide notes in this Bulletin for details of how to contribute and send your material to both of the following: Dipterists Digest Editor Peter Chandler Dipterists Bulletin Editor Darwyn Sumner Secretary 122, Link Road, Anstey, Charnwood, Leicestershire LE7 7BX. John Kramer Tel. 0116 212 5075 31 Ash Tree Road, Oadby, Leicester, Leicestershire, LE2 5TE. [email protected] [email protected] Assistant Editor Treasurer Judy Webb Howard Bentley 2 Dorchester Court, Blenheim Road, Kidlington, Oxon. OX5 2JT. 37, Biddenden Close, Bearsted, Maidstone, Kent. ME15 8JP Tel. 01865 377487 Tel. 01622 739452 [email protected] [email protected] Conservation Dipterists Digest contributions Robert Wolton Locks Park Farm, Hatherleigh, Oakhampton, Devon EX20 3LZ Dipterists Digest Editor Tel.
    [Show full text]
  • Bedfordshire and Luton County Wildlife Sites
    Bedfordshire and Luton County Wildlife Sites Selection Guidelines VERSION 14 December 2020 BEDFORDSHIRE AND LUTON LOCAL SITES PARTNERSHIP 1 Contents 1. INTRODUCTION ........................................................................................................................................................ 5 2. HISTORY OF THE CWS SYSTEM ......................................................................................................................... 7 3. CURRENT CWS SELECTION PROCESS ................................................................................................................ 8 4. Nature Conservation Review CRITERIA (modified version) ............................................................................. 10 5. GENERAL SUPPLEMENTARY FACTORS ......................................................................................................... 14 6 SITE SELECTION THRESHOLDS........................................................................................................................ 15 BOUNDARIES (all CWS) ............................................................................................................................................ 15 WOODLAND, TREES and HEDGES ........................................................................................................................ 15 TRADITIONAL ORCHARDS AND FRUIT TREES ................................................................................................. 19 ARABLE FIELD MARGINS........................................................................................................................................
    [Show full text]
  • Heteroptera: Gerromorpha) in Central Europe
    Shortened web version University of South Bohemia in České Budějovice Faculty of Science Ecology of Veliidae and Mesoveliidae (Heteroptera: Gerromorpha) in Central Europe RNDr. Tomáš Ditrich Ph.D. Thesis Supervisor: Prof. RNDr. Miroslav Papáček, CSc. University of South Bohemia, Faculty of Education České Budějovice 2010 Shortened web version Ditrich, T., 2010: Ecology of Veliidae and Mesoveliidae (Heteroptera: Gerromorpha) in Central Europe. Ph.D. Thesis, in English. – 85 p., Faculty of Science, University of South Bohemia, České Budějovice, Czech Republic. Annotation Ecology of Veliidae and Mesoveliidae (Hemiptera: Heteroptera: Gerromorpha) was studied in selected European species. The research of these non-gerrid semiaquatic bugs was especially focused on voltinism, overwintering with physiological consequences and wing polymorphism with dispersal pattern. Hypotheses based on data from field surveys were tested by laboratory, mesocosm and field experiments. New data on life history traits and their ecophysiological consequences are discussed in seven original research papers (four papers published in peer-reviewed journals, one paper accepted to publication, one submitted paper and one communication in a conference proceedings), creating core of this thesis. Keywords Insects, semiaquatic bugs, life history, overwintering, voltinism, dispersion, wing polymorphism. Financial support This thesis was mainly supported by grant of The Ministry of Education, Youth and Sports of the Czech Republic No. MSM 6007665801, partially by grant of the Grant Agency of the University of South Bohemia No. GAJU 6/2007/P-PřF, by The Research Council of Norway: The YGGDRASIL mobility program No. 195759/V11 and by Czech Science Foundation grant No. 206/07/0269. Shortened web version Declaration I hereby declare that I worked out this Ph.D.
    [Show full text]
  • Anisus Vorticulus (Troschel 1834) (Gastropoda: Planorbidae) in Northeast Germany
    JOURNAL OF CONCHOLOGY (2013), VOL.41, NO.3 389 SOME ECOLOGICAL PECULIARITIES OF ANISUS VORTICULUS (TROSCHEL 1834) (GASTROPODA: PLANORBIDAE) IN NORTHEAST GERMANY MICHAEL L. ZETTLER Leibniz Institute for Baltic Sea Research Warnemünde, Seestr. 15, D-18119 Rostock, Germany Abstract During the EU Habitats Directive monitoring between 2008 and 2010 the ecological requirements of the gastropod species Anisus vorticulus (Troschel 1834) were investigated in 24 different waterbodies of northeast Germany. 117 sampling units were analyzed quantitatively. 45 of these units contained living individuals of the target species in abundances between 4 and 616 individuals m-2. More than 25.300 living individuals of accompanying freshwater mollusc species and about 9.400 empty shells were counted and determined to the species level. Altogether 47 species were identified. The benefit of enhanced knowledge on the ecological requirements was gained due to the wide range and high number of sampled habitats with both obviously convenient and inconvenient living conditions for A. vorticulus. In northeast Germany the amphibian zones of sheltered mesotrophic lake shores, swampy (lime) fens and peat holes which are sun exposed and have populations of any Chara species belong to the optimal, continuously and densely colonized biotopes. The cluster analysis emphasized that A. vorticulus was associated with a typical species composition, which can be named as “Anisus-vorticulus-community”. In compliance with that both the frequency of combined occurrence of species and their similarity in relative abundance are important. The following species belong to the “Anisus-vorticulus-community” in northeast Germany: Pisidium obtusale, Pisidium milium, Pisidium pseudosphaerium, Bithynia leachii, Stagnicola palustris, Valvata cristata, Bathyomphalus contortus, Bithynia tentaculata, Anisus vortex, Hippeutis complanatus, Gyraulus crista, Physa fontinalis, Segmentina nitida and Anisus vorticulus.
    [Show full text]
  • Freshwater Snail Guide
    A Beginner’s Guide to Freshwater Snails of Central Scotland Freshwater snails are a diverse and fascinating group of molluscs found in ponds, lochs, canals, rivers and watery ditches all across the globe. This guide is a simple introduction to some of the most commonly encountered and easily identifiable freshwater snail species in Central Scotland. How do I look for freshwater snails? 1) Choose your spot: anywhere with water – your garden pond, a nearby river, canal or loch – is likely to have snails. 2) Grab a pond net (buy online or make your own by attaching a sieve to the end of an old broom or mop), a white tray or tub and a hand-lens or magnifier. 3) Fill the tray with water from your chosen habitat. Sweep the net around in the water, making sure to get among any vegetation (don’t go too near the bottom or you’ll get a net full of mud), empty your net into the water-filled tray and identify what you have found! Snail shell features Spire Whorls Some snail species have a hard plate called an ‘operculum’ Height which they Mouth (Aperture) use to seal the mouth of the shell when they are inside Height Pointed shell Flat shell Width Width Pond Snails (Lymnaeidae) Variable in size. Mouth always on right-hand side, shells usually long and pointed. Great Pond Snail Common Pond Snail Lymnaea stagnalis Radix balthica Largest pond snail. Common in ponds Fairly rounded and ’fat’. Common in weedy lakes, canals and sometimes slow river still waters. pools.
    [Show full text]
  • XVII. KONFERENCE České Limnologické Společnosti a Slovenskej Limnologickej Spoločnosti „VODA – VĚC VEŘEJNÁ“
    XVII. KONFERENCE České limnologické společnosti a Slovenskej limnologickej spoločnosti „VODA – VĚC VEŘEJNÁ“ SBORNÍK PŘÍSPĚVKŮ 29. června – 3. července 2015, Mikulov Vanda Rádková a Jindřiška Bojková (eds.) Citace RÁDKOVÁ Vanda (ed.) a BOJKOVÁ Jindřiška (ed.). XVII. konference České limnologické společnosti a Slovenskej limnologickej spoločnosti „Voda – věc veřejná“: Sborník příspěvků. Brno: Masarykova univerzita, 2015. ISBN 978-80-210-7874-1. Všechna práva vyhrazena. Žádná část této elektronické knihy nesmí být reprodukována nebo šířena v papírové, elektronické či jiné podobě bez předchozího písemného souhlasu vykonavatele majetkových práv k dílu, kterého je možno kontaktovat na adrese – Nakladatelství Masarykovy univerzity, Žerotínovo náměstí 9, 601 77 Brno. Vanda Rádková a Jindřiška Bojková (eds.) XVII. konference České limnologické společnosti a Slovenskej limnologickej spoločnosti „Voda – věc veřejná“ Sborník příspěvků Vydala Masarykova univerzita, Žerotínovo nám. 617/9, 601 77 Brno 1. vydání, 2015 Tisk: GNT s.r.o., Purkyňova 1678/8, 612 00 Brno ISBN 978-80-210-7874-1 (brož. vaz.) ISBN 978-80-210-7990-8 (online : pdf) ÚVODNÍ SLOVO Milé kolegyně, kolegové, účastníci 17. konference ČLS a SLS, tři roky od poslední, společné konference našich limnologických společností uběhly doslova jako voda a nadchází proto čas se opět sejít a potkat s přáteli, jakož i novými tvářemi nastupující limnologické generace. Někdy se zdá, že tři roky je dlouhá doba. Častokrát jsme s kolegy ve výboru na toto téma diskutovali: měli bychom pořádat konference ve dvouletém intervalu nebo tříletý je dostatečný? Myslíme si, že na častější akce je nás málo, resp. jaksi nezbývá času. Takže tradice „jednou za tři roky“ bude pokračovat dál, i když s některými z vás se, bohužel, opravdu střetávám pouze během limnokonferencí.
    [Show full text]
  • Late Neogene Insect and Other Invertebrate Fossils from Alaska and Arctic/Subarctic Canada
    Invertebrate Zoology, 2019, 16(2): 126–153 © INVERTEBRATE ZOOLOGY, 2019 Late Neogene insect and other invertebrate fossils from Alaska and Arctic/Subarctic Canada J.V. Matthews, Jr.1, A. Telka2, S.A. Kuzmina3* 1 Terrain Sciences Branch, Geological Survey of Canada, 601 Booth Street, Ottawa, Ontario, Canada K1A 0E8. Present address: 1 Red Maple Lane, Hubley, N.S., Canada B3Z 1A5. 2 PALEOTEC Services – Quaternary and late Tertiary plant macrofossil and insect fossil analyses, 1-574 Somerset St. West, Ottawa, Ontario K1R 5K2, Canada. 3 Laboratory of Arthropods, Borissiak Paleontological Institute, RAS, Profsoyuznaya 123, Moscow, 117868, Russia. E-mails: [email protected]; [email protected]; [email protected] * corresponding author ABSTRACT: This report concerns macro-remains of arthropods from Neogene sites in Alaska and northern Canada. New data from known or recently investigated localities are presented and comparisons made with faunas from equivalent latitudes in Asia and Greenland. Many of the Canadian sites belong to the Beaufort Formation, a prime source of late Tertiary plant and insect fossils. But new sites are continually being discovered and studied and among the most informative of these are several from the high terrace gravel on Ellesmere Island. One Ellesmere Island locality, known informally as the “Beaver Peat” contains spectacularly well preserved plant and arthropod fossils, and is the only Pliocene site in Arctic North America to yield a variety of vertebrate fossils. Like some of the other “keystone” localities discussed here, it promises to be important for dating and correlation as well as for documenting high Arctic climatic and environmental conditions during the Pliocene.
    [Show full text]
  • Spineless Spineless Rachael Kemp and Jonathan E
    Spineless Status and trends of the world’s invertebrates Edited by Ben Collen, Monika Böhm, Rachael Kemp and Jonathan E. M. Baillie Spineless Spineless Status and trends of the world’s invertebrates of the world’s Status and trends Spineless Status and trends of the world’s invertebrates Edited by Ben Collen, Monika Böhm, Rachael Kemp and Jonathan E. M. Baillie Disclaimer The designation of the geographic entities in this report, and the presentation of the material, do not imply the expressions of any opinion on the part of ZSL, IUCN or Wildscreen concerning the legal status of any country, territory, area, or its authorities, or concerning the delimitation of its frontiers or boundaries. Citation Collen B, Böhm M, Kemp R & Baillie JEM (2012) Spineless: status and trends of the world’s invertebrates. Zoological Society of London, United Kingdom ISBN 978-0-900881-68-8 Spineless: status and trends of the world’s invertebrates (paperback) 978-0-900881-70-1 Spineless: status and trends of the world’s invertebrates (online version) Editors Ben Collen, Monika Böhm, Rachael Kemp and Jonathan E. M. Baillie Zoological Society of London Founded in 1826, the Zoological Society of London (ZSL) is an international scientifi c, conservation and educational charity: our key role is the conservation of animals and their habitats. www.zsl.org International Union for Conservation of Nature International Union for Conservation of Nature (IUCN) helps the world fi nd pragmatic solutions to our most pressing environment and development challenges. www.iucn.org Wildscreen Wildscreen is a UK-based charity, whose mission is to use the power of wildlife imagery to inspire the global community to discover, value and protect the natural world.
    [Show full text]
  • Biodiversity & Environment Biodiver & Enviro
    „Moderné„Moderné vzdelávanie vzdelávanie pre pre vedomostnú vedomostnú spoločnosť spoločnosť/ / ProjektProjekt je jespolufinancovaný spolufinancovaný zo zozdrojov zdrojov EÚ“ EÚ“ BiodiversityBiodiversity && EnvironmentEnvironment VolumeVolume 12 12 NumberNumber 1 1 PrešovPrešov 20 202020 BIODIVERSITY & ENVIRONMENT (Acta Universitatis Prešoviensis, Folia Oecologica) Ročník 12., číslo 1. Prešov 2020 Časopis je jedným z výsledkov realizácie projektu: „Inovácia vzdelávacieho a výskumného procesu ekológie ako jednej z nosných disciplín vedomostnej spoločnosti“, ITMS: 26110230119, podporeného z operačného programu Vzdelávanie, spolufinancovaného zo zdrojov EÚ. Editor: RNDr. Adriana Eliašová, PhD. Recenzenti: RNDr. Alexander Csanády, PhD. RNDr. Adriana Eliašová, PhD. doc. Ing. Ladislav Hamerlik, PhD. Ing. Martin Hauptvogl, PhD. Mgr. Tomáš Jászay, PhD. RNDr. Juliana Krokusová, PhD. doc. Mgr. Peter Manko, PhD. doc. Ing. Milan Novikmec, PhD. Ing. Jozef Oboňa, PhD. RNDr. Martin Pizňak, PhD. RNDr. Matej Žiak, PhD. Redakčná rada: Predseda: doc. Mgr. Martin Hromada, PhD. Výkonný redaktor: RNDr. Adriana Eliašová, PhD. Členovia: RNDr. Mária Balážová, PhD. RNDr. Michal Baláž, PhD. RNDr. Alexander Csanády, PhD. RNDr. Lenka Demková, PhD. prof. PaedDr. Ján Koščo, PhD. doc. Mgr. Peter Manko, PhD. doc. Ruslan Maryichuk, CSc. doc. Ing. Milan Novikmec, PhD. Ing. Jozef Oboňa, PhD. Ing. Marek Svitok, PhD. Mgr. Iveta Škodová, PhD. doc. RNDr. Marcel Uhrin, PhD. Adresa redakcie: Biodiversity & Environment Katedra ekológie FHPV PU Ulica 17. novembra č. 1 081 16 Prešov Tel: 051 / 75 70 358 e-mail: [email protected] Vydavateľ: Vydavateľstvo Prešovskej univerzity v Prešove Sídlo vydavateľa: Ulica 17. novembra č. 15, 080 01 Prešov IČO vydavateľa: 17 070 775 Periodicita: 2 čísla ročne Jazyk: slovenský/anglický/český Poradie vydania: 1/2020 Dátum vydania: jún 2020 Foto na obálke: Bufo bufo (autor Mgr.
    [Show full text]