Ecological consequences of biological invasions: three invertebrate case studies in the north-eastern Baltic Sea

Kotta, J.; Kotta, I.; Simm, M.; Lankov, A.; Lauringson, V.; Põllumäe, A.; Ojaveer, H.

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Ecological consequences of biological invasions: three invertebrate case studies in the north-eastern Baltic Sea

Kotta, J.; Kotta, I.; Simm, M.; Lankov, A.; Lauringson, V.; Põllumäe, A.; Ojaveer, H. (2006). Ecological consequences of biological invasions: three invertebrate case studies in the north-eastern Baltic Sea. Helgol. Mar. Res. 60(2): 106-112

In: Helgoland Marine Research. Springer: Berlin; Heidelberg. ISSN 1438-387X; e-ISSN 1438-3888

Available in	Authors \| Dataset
VLIZ: MarBEF Open Archive 100514 [ download pdf ]

Keywords

Accidents > Collisions
ANE, Baltic
Aquatic communities > Benthos
Ecology
Environments > Aquatic environment > Pelagic environment
Interspecific relationships
Taxa > Species > Introduced species
Baltic Sea [Marine Regions]
Marine/Coastal

Authors		Top \| Dataset
Kotta, J. Kotta, I. Simm, M. Lankov, A.	Lauringson, V. Põllumäe, A. Ojaveer, H.

Abstract

Population dynamics and ecological impacts of the cirriped Balanus improvisus, the polychaete Marenzelleria neglecta and the cladoceran Cercopagis pengoi were investigated in the north-eastern Baltic Sea. After an increase during the first decade of invasion, the density of M. neglecta and C. pengoi declined afterwards. The studied abiotic environmental variables did not explain the interannual variability in the seasonal cycles of M. neglecta and C. pengoi indicating that the species are at their initial phase of invasion. The population dynamics of B. improvisus was best described by water temperature. B. improvisus promoted the growth of the green alga Enteromorpha intestinalis. M. neglecta enhanced the content of sediment chlorophyll a and reduced growth and survival of the polychaete Hediste diversicolor and growth of the amphipod Monoporeia affinis. Concurrent with the invasion of C. pengoi the abundance of small-sized cladocerans declined, especially above the thermocline. C. pengoi had become an important food for nine-spined stickleback, bleak, herring and smelt.

Dataset
MarBEF (2006) MarBEF Publication Series data. Available online on EurOBIS. Consulted on dd-mm-yyyy., more

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