GLORIA — GEOMAR Library Ocean Research Information Access

1

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Cruise report RV Poseidon Cruise No. 383 [POS383], from 20.04.2009 to 04.05.2009, Ponta Delgad (Acores) - Funchal (Madeira) (2009)

Waniek, Joanna

Leibniz Institut für Ostseeforschung Warnemünde

In: Leibniz Institut für Ostseeforschung Warnemünde, Rostock, Germany, 27 pp.

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Publikationsdatum: 2015-02-17

Beschreibung: Biogeochemical properties of the upper water column in the Madeira Basin especially within the Azores Front

Materialart: Report , NonPeerReviewed

Format: text

DOI: 10.2312/cr_po383

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2

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Cruise report RV Poseidon Cruise No. 459 [POS459], from 18.09.2013 to 02.10.2013, Vigo (Spain) - Funchal (Portugal) (2013)

Waniek, Joanna

Leibniz Institut für Ostseeforschung Warnemünde

In: Leibniz Institut für Ostseeforschung Warnemünde, Rostock, Germany, 24 pp.

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Publikationsdatum: 2015-02-13

Beschreibung: Trials of pressure neutral system (DNS) within the Azores frontal region.

Materialart: Report , NonPeerReviewed

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DOI: 10.2312/cr_po459

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3

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Cruise report RV Poseidon Cruise No. 357 [POS357], from 05.09.2007 to 27.09.2007, Rostock (Germany) - Rostock (Germany) (2008)

Waniek, Joanna

Leibniz Institut für Ostseeforschung Warnemünde

In: Leibniz Institut für Ostseeforschung Warnemünde, Rostock, Germany, 23 pp.

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Publikationsdatum: 2015-02-18

Beschreibung: Project: BaTRE- Baltic Sea Tracer Release Experiment

Materialart: Report , NonPeerReviewed

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DOI: 10.2312/cr_po357

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2. Wochenbericht POS521 (2018)

Waniek, Joanna

Leibniz Institut für Ostseeforschung Warnemünde

In: Leibniz Institut für Ostseeforschung Warnemünde, Rostock, Germany, 1 pp.

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Publikationsdatum: 2018-04-03

Beschreibung: Las Palmas - Malaga (19.03-25.03.2018)

Materialart: Report , NonPeerReviewed

Format: text

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Integrating conventional microscopy and molecular analysis to analyse the abundance and distribution of four Calanus congeners in the North Atlantic (2005)

Lindeque, P. K. ; Hay, S. J. ; Heath, M. R. ; [weitere]

Oxford Univ. Press

In: Journal of Plankton Research, 28 (2). pp. 221-238.

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Publikationsdatum: 2020-07-20

Beschreibung: Analysis of the demographic structure of Calanus species in the North Atlantic presents particular difficulties due to the overlapping spatial distributions of four main congeneric species (Calanus finmarchicus, Calanus helgolandicus, Calanus glacialis and Calanus hyperboreus). These species have similar morphologies, making microscopic discrimination only possible between some of the species at late copepodite or adult stages. However, molecular techniques now offer the possibility of screening significant numbers of specimens and unambiguously identifying them to species, regardless of developmental stage. Unfortunately, the processing rate of specimens by molecular methods is still too low to offer a realistic alternative to microscopy for analysis of samples from large field surveys. Here, we outline and test an approach involving the use of molecular methodology in conjunction with conventional microscopy to assess the species assignment of developmental stage abundances of Calanus congeners. Our study has highlighted many important methodological issues. First, it cannot be assumed that the species composition is homogeneous across the development stages; applying proportional species composition of adults to morphologically undistinguishable earlier development stages can result in error. The second important conclusion is that prosome length may be a highly unreliable discriminator of C. finmarchicus and C. glacialis

Materialart: Article , PeerReviewed

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DOI: 10.1093/plankt/fbi115

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Transitions in bacterial communities along the 2000 km salinity gradient of the Baltic Sea (2011)

Herlemann, Daniel P. R. ; Labrenz, Matthias ; Jürgens, Klaus ; [weitere]

Nature Publishing Group

In: The ISME Journal, 5 (10). pp. 1571-1579.

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Publikationsdatum: 2016-05-25

Beschreibung: Salinity is a major factor controlling the distribution of biota in aquatic systems, and most aquatic multicellular organisms are either adapted to life in saltwater or freshwater conditions. Consequently, the saltwater–freshwater mixing zones in coastal or estuarine areas are characterized by limited faunal and floral diversity. Although changes in diversity and decline in species richness in brackish waters is well documented in aquatic ecology, it is unknown to what extent this applies to bacterial communities. Here, we report a first detailed bacterial inventory from vertical profiles of 60 sampling stations distributed along the salinity gradient of the Baltic Sea, one of world's largest brackish water environments, generated using 454 pyrosequencing of partial (400 bp) 16S rRNA genes. Within the salinity gradient, bacterial community composition altered at broad and finer-scale phylogenetic levels. Analogous to faunal communities within brackish conditions, we identified a bacterial brackish water community comprising a diverse combination of freshwater and marine groups, along with populations unique to this environment. As water residence times in the Baltic Sea exceed 3 years, the observed bacterial community cannot be the result of mixing of fresh water and saltwater, but our study represents the first detailed description of an autochthonous brackish microbiome. In contrast to the decline in the diversity of multicellular organisms, reduced bacterial diversity at brackish conditions could not be established. It is possible that the rapid adaptation rate of bacteria has enabled a variety of lineages to fill what for higher organisms remains a challenging and relatively unoccupied ecological niche.

Materialart: Article , PeerReviewed

Format: text

DOI: 10.1038/ismej.2011.41

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7

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Integrating conventional microscopy and molecular analysis to analyse the abundance and distribution of four Calanus congeners in the North Atlantic (2005)

Lindeque, P. K. ; Hay, S. J. ; Heath, M. R. ; [weitere]

Oxford Univ. Press

In: Journal of Plankton Research, 28 (2). pp. 221-238.

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Details

Publikationsdatum: 2020-07-20

Beschreibung: Analysis of the demographic structure of Calanus species in the North Atlantic presents particular difficulties due to the overlapping spatial distributions of four main congeneric species (Calanus finmarchicus, Calanus helgolandicus, Calanus glacialis and Calanus hyperboreus). These species have similar morphologies, making microscopic discrimination only possible between some of the species at late copepodite or adult stages. However, molecular techniques now offer the possibility of screening significant numbers of specimens and unambiguously identifying them to species, regardless of developmental stage. Unfortunately, the processing rate of specimens by molecular methods is still too low to offer a realistic alternative to microscopy for analysis of samples from large field surveys. Here, we outline and test an approach involving the use of molecular methodology in conjunction with conventional microscopy to assess the species assignment of developmental stage abundances of Calanus congeners. Our study has highlighted many important methodological issues. First, it cannot be assumed that the species composition is homogeneous across the development stages; applying proportional species composition of adults to morphologically undistinguishable earlier development stages can result in error. The second important conclusion is that prosome length may be a highly unreliable discriminator of C. finmarchicus and C. glacialis.

Materialart: Article , PeerReviewed

Format: text

DOI: 10.1093/plankt/fbi115

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