Zooplankton of the open Baltic: Extended Atlas - IOW

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A B Figure 5.1.1. Cnidaria, Scyphomedusae: A, Aurelia aurita (modified from Hayward & Ryland, 2005); B, Cyanea capillata (after Russel, 1970). The moon jelly, a scyphomedusae Aurelia aurita is the most dominant species of the Baltic Sea. Barz et al. (2006) characterise it as a species, which can reduce the stocks of mesozooplankton communities considerably in years of high abundance (e.g. Möller, 1980; Matsakis & Conover, 1991; Purcell, 1992; Olesen, 1995; Omori et al., 1995; Lucas et al., 1997; Schneider & Behrends, 1998). These medusae compete for zooplankton with commercially important planktivorous fish species and ctenophores, but they may also prey on fish eggs and larvae and thus directly affect their recruitment (Barz et al., 2006). The Belt Sea, the western Baltic Sea and also the Archipelago Sea are known as strobilation areas for A. aurita. However, ephyra are not regularly found in the Baltic Proper. Some authors concluded that A. aurita does not strobilate in this area (Janas & Witek, 1993; Barz & Hirche, 2005). However, the occurrence of the other larger Scyphomedusae, Cyanea capillata in the western Baltic Sea and in the Baltic Proper is always a sign for salt water influx from the Kattegat area. An indication for strong salt water influxes is the occurrence of the hydromedusae Euphysa aurata in the western Baltic Sea (Wasmund et al., 2004). 124
Figure 5.1.2. Typical hydroid medusae (modified from Hayward & Ryland, 2005). Figure 5.1.3. Life cycle of a Leptomedusae Obelia geniculata (modified from Larink & Westheide, 2006). 125
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LEIBNIZ-INSTITUT FÜR OSTSEEFORSCHU
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Meereswissenschaftliche Berichte MA
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CONTENTS Page Preface…………
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PREFACE This volume is the Second E
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1. INTRODUCTION Since the last glac
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eautifully designed network of flow
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The authors hope that the new, exte
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B (kg C / km²) 1000 100 10 1 0.1 P
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Table 2.1. Degree of dominance (fro
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ecosystem. Therefore, such introduc
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amplitude. On the other hand, for e
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a b c d Figure 3.2.1: a, The WP-2 U
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Figure 3.2.3. UNESCO standard net W
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procedure of sample preparation is
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al., 2000). The table of the micros
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3.5. Biomass determination Informat
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No Character Taxon Examples 6 Body
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considerably increases in coastal w
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Feeding modes and strategies Differ
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Several investigators observed that
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Fig. 4.1.1 Fig. 4.1.2 Fig. 4.1.3 Fi
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No Taxa BP 1 WBS 2 NBS 3 SBS 4 EBS
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Page 76 and 77: No Taxa BP 1 WBS 2 NBS 3 SBS 4 EBS
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Page 125: 5. MESO- AND MACROZOOPLANKTON OF TH
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Page 133 and 134: Cladocera (Plates 5.3.6 - 5.3.10) T
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Page 137 and 138: Figure 5.1.9. How to measure Cladoc
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Page 161 and 162: 1 BP, Baltic Proper: after Ackefors
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ACKNOWLEDGEMENTS The authors gratef
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REFERENCES Aberle, N., Lengfellner,
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marine biodiversity inventory and t
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Bibliographie zur Biologie und Öko
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Johansson, M., Gorokhova, E., Larss
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method of estimating algal numbers
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community of Tokyo Bay. ICES J. Mar
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system by Aurelia aurita medusae -
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de/documents/mebe73_2008-telesh-lpo
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SELECTED ZOOPLANKTON INTERNET DATA
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INDEX OF LATIN NAMES Only valid spe
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Blepharisma tardum 46 Blepharisma u
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Coleps arenarius 48 Coleps bicuspis
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Didinium 36, 38, 51 Didinium balbia
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Folliculina ampula 54 Folliculina g
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Keronopsis arenivorus 57 Keronopsis
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Metopus major 61 Metopus nivaaensis
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Peritromus faurei 64 Peritromus mon
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Remanella brunnea 67 Remanella caud
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Strongylidium muscorum 71 Stylonich
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Trichocerca dixon-nutalli 154 Trich
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Meereswissenschaftliche Berichte MA
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25 (1997) v. Bodungen, Bodo; Hentzs
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49 (2002) Nausch, Günther; Feistel
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73 (2008) Telesh, Irena; Postel, Lu
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