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  • 2015-2019  (62)
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  • 1
    In: Scientific reports, (2018)8, Article number 6893, 2045-2322
    Type of Medium: Book
    Pages: 26 Seiten , Illustrationen
    Edition: Druckausgabe Mai 2018
    ISSN: 2045-2322
    Language: English
    Note: Aus der Zusammenfassung: "... Here we described the cryptic species Epimeria frankei sp. nov. from the North Sea, and also redescribe its sister species, Epimeria cornigera. The morphological information obtained is substantiated by DNA barcodes and complete nuclear 185 rRNA gene sequences. In addition, we provide, for the first time, full mitochondrial genome data as part of a metazoan species description for a holotype, as well as the neotype. ..."
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  • 2
    Keywords: Forschungsbericht ; Landkreis Ahrweiler ; Landnutzung ; Nachhaltigkeit ; Energieversorgung ; Erneuerbare Energien ; Energiewende
    Type of Medium: Online Resource
    Pages: 1 Online-Ressource (45 Seiten, 459,20 KB)
    Language: German
    Note: Förderkennzeichen BMBF 033L110B , Verbundnummer 01155942 , Autoren dem Berichtsblatt entnommen , Unterschiede zwischen dem gedruckten Dokument und der elektronischen Ressource können nicht ausgeschlossen werden
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  • 3
    Publication Date: 2019-07-11
    Description: During the last years DNA barcoding has become a popular method of choice for molecular specimen identification. Here we present a comprehensive DNA barcode library of various crustacean taxa found in the North Sea, one of the most extensively studied marine regions of the world. Our data set includes 1,332 barcodes covering 205 species, including taxa of the Amphipoda, Copepoda, Decapoda, Isopoda, Thecostraca, and others. This dataset represents the most extensive DNA barcode library of the Crustacea in terms of species number to date. By using the Barcode of Life Data Systems (BOLD), unique BINs were identified for 198 (96.6%) of the analyzed species. Six species were characterized by two BINs (2.9%), and three BINs were found for the amphipod species Gammarus salinus Spooner, 1947 (0.4%). Intraspecific distances with values higher than 2.2% were revealed for 13 species (6.3%). Exceptionally high distances of up to 14.87% between two distinct but monophyletic clusters were found for the parasitic copepod Caligus elongatus Nordmann, 1832, supporting the results of previous studies that indicated the existence of an overlooked sea louse species. In contrast to these high distances, haplotype-sharing was observed for two decapod spider crab species, Macropodia parva Van Noort & Adema, 1985 and Macropodia rostrata (Linnaeus, 1761), underlining the need for a taxonomic revision of both species. Summarizing the results, our study confirms the application of DNA barcodes as highly effective identification system for the analyzed marine crustaceans of the North Sea and represents an important milestone for modern biodiversity assessment studies using barcode sequences
    Type: Article , PeerReviewed
    Format: text
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  • 4
    Publication Date: 2018-03-21
    Description: Background: During the last years, the effectiveness of DNA barcoding for animal species identification has been proven in many studies, analyzing both vertebrate and invertebrate taxa. In terms of marine organisms, however, most barcoding studies typically focus on economically relevant species, for example, fish, as well asonthedocumentationof hotspots of species diversity, for example, tropical coral reefs or regions of the almost unexplored deep sea regions. In contrast to this, species diversity of “well-known” habitats is nearly neglected. As part of our running project we started to build up a comprehensive DNA barcode library for the metazoan taxa of the North Sea, one of the most extensively studied ecosystems of the world. The North Sea is characterized by a highamountof anthropogenic pressure such as intensive fishing and ship traffic as well as offshore installations. Environmental parameters (e.g., depth, sediment characteristics, temperature, and salinity) of this semi-enclosed shelf sea follow a distinct pattern: high seasonal fluctuations can be observed in southern areas, but low fluctuations are given in the northern regions. This heterogeneity is also displayed in macrobenthic community structures, with a lower number of species in the shallow southern parts (i.e., the German Bight) and more species in the central and northern North Sea. In addition to this, species with a typical Mediterranean-Lusitanean distribution are also known to occur in parts of the North Sea where oceanic influences prevail. Results: Our barcode library includes a broad variety of taxa, including typical taxa of marine barcoding studies, for example, fish or decapod crustaceans. Our on-growing library also includes groups that are often ignored as cnidarians, parasitic crustaceans, echinoderms, mollusks, pantopods, polychaets, and others. In total, our library includes more than 4200 DNA barcodes of more than 600 species at the moment. By using the Barcode of Life Data Systems (BOLD), unique BINs were identified for more than 90% of the analyzed species. Significance: Our data represent a first step towards the establishment of a comprehensive DNA barcode library of the Metazoa of the North Sea. Despite the fact that various taxa are still missing or are currently underrepresented, our results clearly underline the usefulness of DNA barcodes to discriminate the vast majority of the analyzed species. It should be also kept in mind that the benefits of DNA barcoding are not restricted to taxonomic or systematic research only. The rise of modern high-throughput sequencing technologies will change biomonitoring applications and surveys significantly in the coming years. Following this, reference datasets such as ours will become essential for a correct identification of specimens sequenced as part of a metabarcoding study. This is especially true for the North Sea, a marine region that has been massively affected by cargo ship traffic, the exploitation of oil and gas resources, offshore wind parks, and in particular extensive long-term fisheries.
    Type: Article , NonPeerReviewed
    Format: text
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  • 5
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    PANGAEA
    In:  Supplement to: Gutow, Lars; Beermann, Jan; Buschbaum, Christian; Rivadeneira, Marcelo M; Thiel, Martin (2015): Castaways can't be choosers - Homogenization of rafting assemblages on floating seaweeds. Journal of Sea Research, 95, 161-171, https://doi.org/10.1016/j.seares.2014.07.005
    Publication Date: 2023-11-14
    Description: After detachment from benthic habitats, the epibiont assemblages on floating seaweeds undergo substantial changes, but little is known regarding whether succession varies among different seaweed species. Given that floating algae may represent a limiting habitat in many regions, rafting organisms may be unselective and colonize any available seaweed patch at the sea surface. This process may homogenize rafting assemblages on different seaweed species, which our study examined by comparing the assemblages on benthic and floating individuals of the fucoid seaweeds Fucus vesiculosus and Sargassum muticum in the northern Wadden Sea (North Sea). Species richness was about twice as high on S. muticum as on F. vesiculosus, both on benthic and floating individuals. In both seaweed species benthic samples were more diverse than floating samples. However, the species composition differed significantly only between benthic thalli, but not between floating thalli of the two seaweed species. Separate analyses of sessile and mobile epibionts showed that the homogenization of rafting assemblages was mainly caused by mobile species. Among these, grazing isopods from the genus Idotea reached extraordinarily high densities on the floating samples from the northern Wadden Sea, suggesting that the availability of seaweed rafts was indeed limiting. Enhanced break-up of algal rafts associated with intense feeding by abundant herbivores might force rafters to recolonize benthic habitats. These colonization processes may enhance successful dispersal of rafting organisms and thereby contribute to population connectivity between sink populations in the Wadden Sea and source populations from up-current regions.
    Type: Dataset
    Format: application/zip, 3 datasets
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  • 6
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    PANGAEA
    In:  Supplement to: Jungblut, Simon; Beermann, Jan; Boos, Karin; Saborowski, Reinhard; Hagen, Wilhelm (2017): Population development of the invasive crab Hemigrapsus sanguineus (De Haan, 1853) and its potential native competitor Carcinus maenas (Linnaeus, 1758) at Helgoland (North Sea) between 2009 and 2014. Aquatic Invasions, 12(1), 85-96, https://doi.org/10.3391/ai.2017.12.1.09
    Publication Date: 2023-11-14
    Description: The Asian shore crab Hemigrapsus sanguineus (De Haan, 1853) has recently established populations in the North Sea and now occurs within the native ranges of the green crab Carcinus maenas (Linnaeus, 1758). To determine potential competitive effects and to assess the progress of the invasion, species-specific population characteristics (numerical abundances, biomasses, and size distributions) of the two species around the island of Helgoland (German Bight, southern North Sea) were compared for surveys conducted in 2009 and 2014. Sampling sites were chosen based on accessibility and differed in their topography and wave exposure, which allowed testing for the influence of these factors on the establishment success of H. sanguineus. The numerical abundance and biomass of H. sanguineus increased markedly and approached those of C. maenas in 2014. At a sheltered site, H. sanguineus even outnumbered C. maenas, whereas the converse was observed at a site exposed to strong winds and waves. Although such contrasting abundance patterns between the native and the introduced shore crab may be the result of direct interference, the dominance of H. sanguineus at the sheltered site may also be explained by enhanced larval settling rates caused by odors of conspecifics. The results suggest that the invasion of H. sanguineus has not yet reached its equilibrium, and population abundances in the North Sea are expected to further increase in the future.
    Type: Dataset
    Format: application/zip, 4 datasets
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  • 7
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    PANGAEA
    In:  Supplement to: Gutow, Lars; Bartl, Kevin; Saborowski, Reinhard; Beermann, Jan (2019): Gastropod pedal mucus retains microplastics and promotes the uptake of particles by marine periwinkles. Environmental Pollution, 246, 688-696, https://doi.org/10.1016/j.envpol.2018.12.097
    Publication Date: 2023-11-14
    Description: The rapid dissemination of microplastics in many habitats of the oceans has raised concerns about the consequences for marine biota and ecosystems. Many adverse effects of microplastics on marine invertebrates are consequences of ingestion. Accordingly, the identification of mechanisms that facilitate the uptake of microplastics is essential for the evaluation of possible implications for marine organisms and food webs. Gastropods produce mucus for locomotion. Gastropod pedal mucus naturally retains formerly suspended micro-organisms, such as bacteria, microalgae, and seaweed spores. The retained organisms are consumed by gastropods that forage on pedal mucus. Here, we investigated the potential of gastropod pedal mucus to retain suspended microplastic particles and make them available for ingestion by periwinkles that forage on the contaminated mucus. In laboratory experiments, mucus of the periwinkles Littorina littorea and Littorina obtusata efficiently retained microplastics. Retention of microplastics varied between mucus from conspecifics of different size but not between mucus from either species. The density of microplastics in mucus trails increased concomitantly with the experimental particle concentration but was independent of incubation time. Aging of mucus and, particularly, desiccation affected the retention of microplastics. Periwinkles ingested microplastics when foraging on the contaminated mucus. Our results reveal a functional link between biogenic accumulation of microplastics and their trophic transfer by marine benthic herbivores into marine food webs.
    Type: Dataset
    Format: application/vnd.openxmlformats-officedocument.spreadsheetml.sheet, 34.9 kBytes
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  • 8
    Publication Date: 2023-11-14
    Keywords: Acrochaetium secundatum; Alcyonidium mytili; Anoplodactylus petiolatus; Antithamnion sp.; Apherusa bispinosa; Aplidium glabrum; Aplysia fasciata; Apohyale prevostii; Ascophyllum nodosum; Asterias rubens; Austrominius modestus; Autolytus sp.; Balanus crenatus; Belone belone; Berkeleya rutilans; Bivalvia indeterminata, juvenile; Bowerbankia gracilis; Bowerbankia imbricata; Bowerbankia sp.; Bryopsis sp.; Cancer pagurus; Capitella sp.; Caprella linearis; Caprella mutica; Caprella sp.; Carcinus maenas; Ceramium nodulosum; Ceramium rubrum; Ceramium sp.; Cerastoderma edule; Cerastoderma sp.; Chaetomorpha sp.; Chaetomorpha tortuosa; Cheirocratus sp.; Chondrus crispus; Clytia hemisphaerica; Colpomenia sinuosa; Conopeum reticulum; Coryne muscoides; Crassostrea gigas; Crepidula fornicata; Cumacea indeterminata; Cyclopterus lumpus; Date/Time of event; Ectocarpales; Ectocarpus spp.; Elachista fucicola; Electra pilosa; Enteromorpha spp.; Eriocheir sinensis; Erythrotrichia reflexa; Erythrotrichia sp.; Eubranchus exiguus; Event label; Fucus vesiculosus; Fves_bent_1; Fves_bent_10; Fves_bent_11; Fves_bent_12; Fves_bent_13; Fves_bent_2; Fves_bent_3; Fves_bent_4; Fves_bent_5; Fves_bent_6; Fves_bent_7; Fves_bent_8; Fves_bent_9; Fves_float_1; Fves_float_10; Fves_float_11; Fves_float_12; Fves_float_13; Fves_float_14; Fves_float_15; Fves_float_2; Fves_float_3; Fves_float_4; Fves_float_5; Fves_float_6; Fves_float_7; Fves_float_8; Fves_float_9; Gammarus locusta; Gasterosteus aculeatus; Giffordia granulosa; Gitana sarsi; Goniotrichum alsidii; Gracilaria vermiculophylla; Halichondria panicea; Harmothoe imbricata; Hemigrapsus sanguineus; Himanthalia elongata; Hydrobia ulvae; Hydrozoa indeterminata; Idotea baltica; Idotea chelipes; Idotea emarginata; Idotea granulosa; Idotea linearis; Idotea metallica; Idotea neglecta; Idotea pelagica; Idotea sp.; Jaera albifrons; Janiridae indeterminata; Jassa marmorata; Laomedea angulata; Latitude of event; Lepidonotus squamatus; Leucosolenia sp.; Liocarcinus holsatus; Littorina fabalis; Littorina littorea; Littorina obtusata; Longitude of event; Macoma baltica; Membranipora membranacea; Metopa pusilla; Metridium senile; Microprotopus maculatus; Molgula manhattensis; Monocorophium acherusicum; Mya arenaria; Mytilus edulis; Nemertea indeterminata; Nereis diversicolor; Nereis sp.; Nudibranch eggs; Nymphon brevirostre; Obelia geniculata; Obelia longissima; Obelia sp.; Pagurus bernhardus; Palaemon longirostris; Pedicellina sp.; Phycinae; Pilayella sp.; Polydora ciliata; Polysiphonia sp.; Polysiphonia violacea; Polytrichium sp.; Praunus flexuosus; Proceraea cornuta; Pycnogonida indeterminata; Red crustacea indeterminata; Salicornia europaea; Sample ID; Sargassum muticum; Semibalanus balanoides; Smut_bent_1; Smut_bent_10; Smut_bent_11; Smut_bent_12; Smut_bent_13; Smut_bent_2; Smut_bent_3; Smut_bent_4; Smut_bent_5; Smut_bent_6; Smut_bent_7; Smut_bent_8; Smut_bent_9; Smut_float_1; Smut_float_10; Smut_float_11; Smut_float_12; Smut_float_2; Smut_float_3; Smut_float_4; Smut_float_5; Smut_float_6; Smut_float_7; Smut_float_8; Smut_float_9; Spinachia spinachia; Status; Styela clava; Suaeda maritima; Sycon ciliatum; Syllidae indeterminata; Sylt, Rømø bight, North Sea; Syngnathus rostellatus; Ulva lactuca; Zostera marina; Zostera noltii; Zostera sp.
    Type: Dataset
    Format: text/tab-separated-values, 6837 data points
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  • 9
    Publication Date: 2023-11-14
    Keywords: Ascophyllum nodosum; Ascophyllum nodosum, biomass, wet mass; Biomass, wet mass; Comment; Date/Time of event; Event label; Fucus vesiculosus; Fucus vesiculosus, biomass, wet mass; Fves_bent_1; Fves_bent_10; Fves_bent_11; Fves_bent_12; Fves_bent_13; Fves_bent_2; Fves_bent_3; Fves_bent_4; Fves_bent_5; Fves_bent_6; Fves_bent_7; Fves_bent_8; Fves_bent_9; Fves_float_1; Fves_float_10; Fves_float_11; Fves_float_12; Fves_float_13; Fves_float_14; Fves_float_15; Fves_float_2; Fves_float_3; Fves_float_4; Fves_float_5; Fves_float_6; Fves_float_7; Fves_float_8; Fves_float_9; Gracilaria vermiculophylla; Gracilaria vermiculophylla, biomass, wet mass; Himanthalia elongata; Himanthalia elongata, biomass, wet mass; Latitude of event; Longitude of event; Salicornia europaea, biomass, wet mass; Salicornia maritima; Sample ID; Sargassum muticum; Sargassum muticum, biomass, wet mass; Smut_bent_1; Smut_bent_10; Smut_bent_11; Smut_bent_12; Smut_bent_13; Smut_bent_2; Smut_bent_3; Smut_bent_4; Smut_bent_5; Smut_bent_6; Smut_bent_7; Smut_bent_8; Smut_bent_9; Smut_float_1; Smut_float_10; Smut_float_11; Smut_float_12; Smut_float_2; Smut_float_3; Smut_float_4; Smut_float_5; Smut_float_6; Smut_float_7; Smut_float_8; Smut_float_9; Status; Suaeda maritima; Suaeda maritima, biomass, wet mass; Sylt, Rømø bight, North Sea; Zostera marina; Zostera marina, biomass, wet mass; Zostera noltii; Zostera noltii, biomass, wet mass
    Type: Dataset
    Format: text/tab-separated-values, 786 data points
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  • 10
    Publication Date: 2023-11-14
    Keywords: Biomass, wet mass; Body length; Comment; Date/Time of event; Epibiotic; Event label; Female; Fves_bent_1; Fves_bent_10; Fves_bent_11; Fves_bent_12; Fves_bent_13; Fves_bent_2; Fves_bent_3; Fves_bent_4; Fves_bent_5; Fves_bent_6; Fves_bent_7; Fves_bent_8; Fves_bent_9; Fves_float_1; Fves_float_10; Fves_float_11; Fves_float_12; Fves_float_13; Fves_float_14; Fves_float_15; Fves_float_2; Fves_float_3; Fves_float_4; Fves_float_5; Fves_float_6; Fves_float_7; Fves_float_8; Fves_float_9; Juvenile; Latitude of event; Length, maximal; Longitude of event; Male; Sample ID; Smut_bent_1; Smut_bent_10; Smut_bent_11; Smut_bent_12; Smut_bent_13; Smut_bent_2; Smut_bent_3; Smut_bent_4; Smut_bent_5; Smut_bent_6; Smut_bent_7; Smut_bent_8; Smut_bent_9; Smut_float_1; Smut_float_10; Smut_float_11; Smut_float_12; Smut_float_2; Smut_float_3; Smut_float_4; Smut_float_5; Smut_float_6; Smut_float_7; Smut_float_8; Smut_float_9; Stage megalopa; Status; Sylt, Rømø bight, North Sea; Taxon/taxa
    Type: Dataset
    Format: text/tab-separated-values, 6099 data points
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