A5049692741- Marine Biology and Ecology Research
- Marine and coastal ecosystems
- Coral and Marine Ecosystems Studies
- Isotope Analysis in Ecology
- Parasite Biology and Host Interactions
- Marine Ecology and Invasive Species
- Marine and fisheries research
- Genomics and Phylogenetic Studies
- Identification and Quantification in Food
- Cephalopods and Marine Biology
- Marine and coastal plant biology
- Biomedical Text Mining and Ontologies
- Microbial Community Ecology and Physiology
- Marine and environmental studies
- Genetic diversity and population structure
- Aquatic Invertebrate Ecology and Behavior
- Ocean Acidification Effects and Responses
- Ichthyology and Marine Biology
- Diatoms and Algae Research
- Marine Bivalve and Aquaculture Studies
- Coastal and Marine Management
GEOMAR Helmholtz Centre for Ocean Research Kiel
2009-2023
Senckenberg am Meer
2015-2018
University of Bremen
2002-2008
Kiel University
1988-2001
Institut für ökologische Wirtschaftsforschung
1989
Abundance and stable isotope composition of large small mesozooplankton were analyzed in samples taken with 333 100 μm nets, respectively, at four sites the eastern Mediterranean down to 4200 m depth October 2001. Large (333 nets) was sieved into five size fractions, δ13C δ15N values fractions measured as well total (100 specific taxa. These measurements allow insights source diet trophic level relative sinking suspended particulate organic matter. Overall, biomass abundance zooplankton low,...
We describe two species from the genus Triconia Böttger-Schnack, 1999 in family Oncaeidae northeastern equatorial Pacific, both belonging to conifera-subgroup. Both sexes of T. derivata (Heron & Bradford-Grieve, 1995) are redescribed, including morphological features not noted earlier descriptions, such as posterior face labrum. Specimens Pacific differ slightly original descriptions some morphometric characters, and their differentiation furcula (Farran, 1936), which is closely related,...
The abundance and vertical distribution of micro-metazoans sampled with fine nets 0.05 mm mesh size were studied at three stations in the Arabian Sea during intermonsoon period (April/May 1987) down to 1850 m depth. In epipelagic zone (0–100 m). values biomass metazoan tended be higher than those reported for other tropical oceanic areas. mesopelagic zone, which is characterized by an extreme oxygen deficiency between 100 1000 depth, taxa species numbers non-calanoid copepods largely...
Three species of the similis-subgroup genus TriconiaBöttger-Schnack, 1999 in family Oncaeidae Giesbrecht, 1893 [“1892”] are described based on specimens collected by using a fine mesh net northeastern equatorial Pacific Ocean. One is newly recorded Pacific, and other two new to science. Triconia komo n. sp. closely related T. hawii (Böttger-Schnack & Boxshall, 1990), but differs distinctly relative length outer basal seta P5 female as well slightly VI caudal ramus both sexes. onnuri...
MEPS Marine Ecology Progress Series Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout JournalEditorsTheme Sections 239:251-261 (2002) - doi:10.3354/meps239251 Grazing during early spring in Gulf of Aqaba and northern Red Sea Ulrich Sommer1,*, Ulrike G. Berninger1,2, Ruth Böttger-Schnack3, Astrid Cornils2, Wilhelm Hagen3, Thomas Hansen1, Tariq Al-Najjar4, Anton F. Post5, Sigrid B. Schnack-Schiel2, Herwig Stibor6, Dorothea...
MEPS Marine Ecology Progress Series Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout JournalEditorsTheme Sections 118:81-102 (1995) - doi:10.3354/meps118081 Summer distribution of micro- and small mesozooplankton in Red Sea Gulf Aden, with special reference non-calanoid copepods Böttger-Schnack, R. From Aden along a transect central-northern abundance taxonomic composition metazoan plankton was studied during southwest...
The community composition of pelagic copepods near Australia's North West Cape (21° 49′S, 114° 14′E) was studied during the austral summers 1997/98 and 1998/99. Most sampling occurred at a shallow (20 m) shelf station deeper (90 shelf-break station, though on four occasions set eight stations were occupied 36 km cross-shelf transect. During El Niño conditions prevalent summer 1997/98, episodic upwelling causing intermittent high primary production. there little difference between in spring...
Three small species of Oncaeidae (two which are new to science) described from the Red Sea, representing ivlevi-group as defined in a recent phylogenetic study oncaeid by Böttger-Schnack & Huys 2001. All characterized (1) modification caudal rami seta III into strong spiniform element, (2) undulate or lobate hyaline frill at posterior margin urosomites and (3) reduced number six elements on maxillule. A genus, Spinoncaea, is proposed accommodate all sharing these characters. Sea specimens S....
Journal Article Biological observations on small cyclopoid copepods in the Red Sea Get access Ruth Böttger-Schnack, Böttger-Schnack 1Institut für Hydrobiologie und FischereiwissenschaftZeiseweg 9, D-2000 Hamburg 502Present address: Institut Meereskunde an der Universität KielDüsternbrooker Weg 20, D-2300 Kiel 1, FRG Search for other works by this author on: Oxford Academic Google Scholar Dietrich Schnack, Schnack 3Institut Horst Weikert 50 of Plankton Research, Volume 11, Issue 5, 1989,...
The abundance and vertical distribution of microcopepods sampled by nets with 55 μm mesh size was compared for two neighbouring but hydrographically different areas, the Gulf Aqaba northernmost Red Sea, during spring 1999. structure total microcopepod communities differed considerably between regimes: In stratified waters calanoids outnumbered oncaeids as well oithonids at 0–100 m, whereas dominated in all meso- bathypelagic layers below 100 m deep. unusually deep vertically mixed Aqaba,...
Abundance, distribution, population structure, lipid content, composition and reproductive feeding activity of Rhincalanus nasutus were studied in the Gulf Aqaba northern Red Sea during RV "Meteor"-cruise M 44-2 February/March 1999. occurred higher numbers (585 ind m−2) than (254 m−2). Young developmental stages (nauplii, copepodite CI CII) absent. In southern Aqaba, bulk developed from stage CV to adult course 3-week study period. contrast, immature dominated at adjacent stations Sea....
Macrosetella gracilis is closely associated with the epipelagic filamentous cyanobacteria OsciUatoria (Trichodesmiurn) spp., which serve as food for adults and a substrate non-pelagic juveniles.Plankton sampling in Red Sea 1980-81, using multiple opening-closing net 0.1 mm mesh, revealed M. populations from surface to deepest stratum sampled (1650 m).Their population biology was investigated central northern Sea, included analysis of ontogenetic composition size distribubon, sex ratio...
We compared pelagic copepod communities at three (400+ m) stations adjacent to Scott Reef (14°S), a shelf-break reef in Australia's Indian Ocean territory, with those within the shallow (c.50 atoll lagoon. The metazooplankton assemblage sampled by our 100-μm multinet system was dominated small (< 1.0 mm) copepods. identified over 220 species, belonging five of nine orders. Of these, 68 (31%) are new records for Australian waters and least 14 likely be undescribed. Redundancy analysis...
Abstract The holoplanktonic family Miraciidae (Copepoda, Harpacticoida) is revised and a key to the four monotypic genera presented. Amended diagnoses are given for Miracia Dana, Oculosetella Dahl Macrosetella A. Scott, based on complete redescriptions of their respective type species M. efferata 1849, O. gracilis (Dana, 1849) 1847). A fourth genus Distioculus gen. nov. proposed accommodate minor T. 1894. occurrence two size-morphs in Red Sea discussed, reliable distribution records...
A total of 23 species and three groups form variants oncaeid copepods have been identified, which were collected in small mesh net samples taken along a transect from the northernmost Red Sea (>27°N) to Gulf Aqaba down maximum depth 800 m. Two present only main basin, but not recorded Gulf. By comparing results with previously published data central southern first assessment zoogeographical distribution Oncaeidae entire has achieved. The diversity appears be considerably lower compared Sea,...