The invasive ctenophore Mnemiopsis leidyi in the central Baltic Sea: seasonal phenology and hydrographic influence on spatio-temporal distribution patterns

M. Schaber, H. Haslob, Bastian Huwer, A. Harjes, H.-H. Hinrichsen, Fritz Köster, Marie Storr-Paulsen, J.O. Schmidt, R. Voss

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

In the Western Baltic, the invasive ctenophore Mnemiopsis leidyi was recorded for the first time in autumn 2006. An eastward propagation of the ctenophore into the central Baltic, and thus into important spawning grounds of major Baltic fish stocks, was observed in 2007. The focus of the present study was to investigate the seasonal phenology of this introduced species and whether it is able to form a self-sustaining population in this area. Therefore, the variability of temporal and spatial distribution of M. leidyi in the Bornholm Basin was analyzed over the first 4 years following the invasion and related to ambient hydrographic parameters. Results show a clear seasonal pattern. In contrast to the majority of other native and exotic habitats, the seasonal phenology showed highest abundances in spring and autumn months and only sporadic or even no appearance during summer. Vertical distribution was mostly confined to water layers below the permanent halocline and significantly influenced by ambient temperature. Our results indicate that there is no self-sustaining population of M. leidyi in the central Baltic Sea. Instead, the species is most likely re-introduced into the Bornholm Basin every year via lateral advection from source populations in the Western Baltic. These findings are important not only to further assess the potential impact of M. leidyi on the pelagic ecosystem of the central Baltic Sea, but also for a better understanding of the mechanisms of its invasion into other marine areas
Original languageEnglish
JournalJournal of Plankton Research
Volume33
Issue number7
Pages (from-to)1053-1065
ISSN0142-7873
DOIs
Publication statusPublished - 2011

Keywords

  • Ctenophore
  • Habitat preferences
  • Invasive species
  • Seasonal distribution patterns
  • Bornholm Basin

Cite this

@article{7b211f8ccec94871930a9a7e1b429134,
title = "The invasive ctenophore Mnemiopsis leidyi in the central Baltic Sea: seasonal phenology and hydrographic influence on spatio-temporal distribution patterns",
abstract = "In the Western Baltic, the invasive ctenophore Mnemiopsis leidyi was recorded for the first time in autumn 2006. An eastward propagation of the ctenophore into the central Baltic, and thus into important spawning grounds of major Baltic fish stocks, was observed in 2007. The focus of the present study was to investigate the seasonal phenology of this introduced species and whether it is able to form a self-sustaining population in this area. Therefore, the variability of temporal and spatial distribution of M. leidyi in the Bornholm Basin was analyzed over the first 4 years following the invasion and related to ambient hydrographic parameters. Results show a clear seasonal pattern. In contrast to the majority of other native and exotic habitats, the seasonal phenology showed highest abundances in spring and autumn months and only sporadic or even no appearance during summer. Vertical distribution was mostly confined to water layers below the permanent halocline and significantly influenced by ambient temperature. Our results indicate that there is no self-sustaining population of M. leidyi in the central Baltic Sea. Instead, the species is most likely re-introduced into the Bornholm Basin every year via lateral advection from source populations in the Western Baltic. These findings are important not only to further assess the potential impact of M. leidyi on the pelagic ecosystem of the central Baltic Sea, but also for a better understanding of the mechanisms of its invasion into other marine areas",
keywords = "Ctenophore, Habitat preferences, Invasive species, Seasonal distribution patterns, Bornholm Basin",
author = "M. Schaber and H. Haslob and Bastian Huwer and A. Harjes and H.-H. Hinrichsen and Fritz K{\"o}ster and Marie Storr-Paulsen and J.O. Schmidt and R. Voss",
year = "2011",
doi = "10.1093/plankt/fbq167",
language = "English",
volume = "33",
pages = "1053--1065",
journal = "Journal of Plankton Research",
issn = "0142-7873",
publisher = "Oxford University Press",
number = "7",

}

The invasive ctenophore Mnemiopsis leidyi in the central Baltic Sea: seasonal phenology and hydrographic influence on spatio-temporal distribution patterns. / Schaber, M.; Haslob, H.; Huwer, Bastian; Harjes, A.; Hinrichsen, H.-H.; Köster, Fritz; Storr-Paulsen, Marie; Schmidt, J.O.; Voss, R.

In: Journal of Plankton Research, Vol. 33, No. 7, 2011, p. 1053-1065.

Research output: Contribution to journalJournal articleResearchpeer-review

TY - JOUR

T1 - The invasive ctenophore Mnemiopsis leidyi in the central Baltic Sea: seasonal phenology and hydrographic influence on spatio-temporal distribution patterns

AU - Schaber, M.

AU - Haslob, H.

AU - Huwer, Bastian

AU - Harjes, A.

AU - Hinrichsen, H.-H.

AU - Köster, Fritz

AU - Storr-Paulsen, Marie

AU - Schmidt, J.O.

AU - Voss, R.

PY - 2011

Y1 - 2011

N2 - In the Western Baltic, the invasive ctenophore Mnemiopsis leidyi was recorded for the first time in autumn 2006. An eastward propagation of the ctenophore into the central Baltic, and thus into important spawning grounds of major Baltic fish stocks, was observed in 2007. The focus of the present study was to investigate the seasonal phenology of this introduced species and whether it is able to form a self-sustaining population in this area. Therefore, the variability of temporal and spatial distribution of M. leidyi in the Bornholm Basin was analyzed over the first 4 years following the invasion and related to ambient hydrographic parameters. Results show a clear seasonal pattern. In contrast to the majority of other native and exotic habitats, the seasonal phenology showed highest abundances in spring and autumn months and only sporadic or even no appearance during summer. Vertical distribution was mostly confined to water layers below the permanent halocline and significantly influenced by ambient temperature. Our results indicate that there is no self-sustaining population of M. leidyi in the central Baltic Sea. Instead, the species is most likely re-introduced into the Bornholm Basin every year via lateral advection from source populations in the Western Baltic. These findings are important not only to further assess the potential impact of M. leidyi on the pelagic ecosystem of the central Baltic Sea, but also for a better understanding of the mechanisms of its invasion into other marine areas

AB - In the Western Baltic, the invasive ctenophore Mnemiopsis leidyi was recorded for the first time in autumn 2006. An eastward propagation of the ctenophore into the central Baltic, and thus into important spawning grounds of major Baltic fish stocks, was observed in 2007. The focus of the present study was to investigate the seasonal phenology of this introduced species and whether it is able to form a self-sustaining population in this area. Therefore, the variability of temporal and spatial distribution of M. leidyi in the Bornholm Basin was analyzed over the first 4 years following the invasion and related to ambient hydrographic parameters. Results show a clear seasonal pattern. In contrast to the majority of other native and exotic habitats, the seasonal phenology showed highest abundances in spring and autumn months and only sporadic or even no appearance during summer. Vertical distribution was mostly confined to water layers below the permanent halocline and significantly influenced by ambient temperature. Our results indicate that there is no self-sustaining population of M. leidyi in the central Baltic Sea. Instead, the species is most likely re-introduced into the Bornholm Basin every year via lateral advection from source populations in the Western Baltic. These findings are important not only to further assess the potential impact of M. leidyi on the pelagic ecosystem of the central Baltic Sea, but also for a better understanding of the mechanisms of its invasion into other marine areas

KW - Ctenophore

KW - Habitat preferences

KW - Invasive species

KW - Seasonal distribution patterns

KW - Bornholm Basin

U2 - 10.1093/plankt/fbq167

DO - 10.1093/plankt/fbq167

M3 - Journal article

VL - 33

SP - 1053

EP - 1065

JO - Journal of Plankton Research

JF - Journal of Plankton Research

SN - 0142-7873

IS - 7

ER -