MEPS Marine Ecology Progress Series Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout JournalEditorsTheme Sections 123:259-271 (1995) - doi:10.3354/meps123259 Effects of grazing, sedimentation and phytoplankton cell lysis on structure a coastal pelagic food web Brussaard CPD, Riegman R, Noordeloos AAM, Cadée GC, Witte H, Kop AJ, Nieuwland G, van Duyl FC, Bak RPM The influence dynamics ecosystem in Southern Bight North Sea...

Uni-algal, non-axenic cultures of six marine diatoms were screened by polymerase chain reaction–denaturing gradient gel electrophoresis for the diversity accompanying bacterial communities ('satellite' bacteria) in order to test hypothesis that algal cells constitute niches specific species. The complexity satellite assemblages, as judged from number detected phylotypes, was low when compared assemblages nature. Generally, accompanied distinct majority phylotypes unique, and only some common...

Abstract. The Arctic Ocean ecosystem is particularly vulnerable to ocean acidification (OA) related alterations due the relatively high CO2 solubility and low carbonate saturation states of its cold surface waters. Thus far, however, there only little known about consequences OA on base food web. In a mesocosm CO2-enrichment experiment (overall levels ranged from ~ 180 1100 μatm) in Kongsfjorden off Svalbard, we studied natural pelagic microbial community. distinctly affected composition...

Plastic particles in the ocean are typically covered with microbial biofilms, but it remains unclear whether distinct communities colonize different polymer types. In this study, we analyzed forming biofilms on floating microplastics a bay of island Elba Mediterranean Sea. Raman spectroscopy revealed that plastic mainly comprised polyethylene (PE), polypropylene (PP), and polystyrene (PS) which were brittle featured cracks. Fluorescence situ hybridization imaging by high-resolution...

Harbour porpoises (Phocoena phocoena) stranding in large numbers around the southern North Sea with fatal, sharp-edged mutilations have spurred controversy among scientists, fishing industry and conservationists, whose views about likely cause differ. The recent detection of grey seal (Halichoerus grypus) DNA bite marks on three mutilated harbour porpoises, as well direct observations attacks identified this species a probable cause. Bite mark characteristics were assessed retrospective...

We report viral‐induced mortality rates of the picoeukaryotic (two size classes) and prokaryotic (cyanobacteria Prochlorococcus Synechococcus ) phytoplankton during a cruise in oligotrophic subtropical northeastern Atlantic (October 2002). A dilution assay, simultaneously estimating viral lysis microzooplankton grazing, was applied around deep chlorophyll maximum (DCM) at six stations. For smallest picoeukaryotes (group I), responsible for 50‐100% total cell losses, with ranging from 0.1 to...

Abstract. This study characterizes the microbial community composition over Haas Mound, one of most prominent cold-water coral mounds Logachev Mound province (Rockall Bank, NE Atlantic). We outline patterns distribution vertically – from seafloor to water column and laterally across mound couple these topography hydrography. Samples water, sediment Lophelia pertusa were collected in 2012 2013 locations that chosen based on high definition video surveys. Temperature current measurements...

Marker gene sequencing of the rRNA operon (16S, 18S, ITS) or cytochrome c oxidase I (CO1) is a popular means to assess microbial communities environment, microbiomes associated with plants and animals, as well multicellular organisms via environmental DNA sequencing. Since this technique based on single gene, even only parts rather than entire genome, number reads needed per sample community structure lower that required for metagenome This makes marker affordable nearly any laboratory....

We characterized and quantified the intact polar lipid (IPL) composition of surface waters North Sea investigated its relationships with environmental conditions, microbial abundances, community composition. The total IPL pool comprised at least 600 different species in seven main classes: glycerophospholipids phosphatidylcholine (PC), phosphatidylglycerol (PG), phosphatidylethanolamine (PE); sulfur‐bearing glycerolipid sulfoquinovosyldiacylglycerol (SQDG); nitrogen‐bearing betaine lipids...

The coastal North Sea is characterized by strong seasonal dynamics in abiotic and biotic variables. Hence, pronounced temporal changes the bacterioplankton community composition can be expected. Catalyzed reporter deposition fluorescence situ hybridization analysis showed a succession, with Alphaproteobacteria dominating before spring phytoplankton bloom, Bacteroidetes increasing during bloom (up to 60% of prokaryotic community) being replaced Gammaproteobacteria postbloom period (on average...

Abstract Analyses of environmental DNA have the potential to become an integrated tool in fish research and management. We performed a pilot study during spring migration fishes from North Sea into Wadden present comparative results daily fyke catches (20 mm mesh) Marsdiep tidal inlet on two locations weekly eDNA analyses three locations, all within 2 km distance. Fish did not differ significantly between whereas composition showed significant location effect. However, when analysis was...

Tidal stirring gradients, interacting with seasonal variation in photosynthetically active radiation, sea-surface heating, and wind stirring, are proposed as the most important controls on plankton southern North Sea. The hypothesis, form of a numerical model, is tested against observations during 1988/89 cycles spatial phyto- zoo-plankton. importance tidal mixing front, effects residual circulation nutrient-rich river discharges, discussed, estimates given microplankton community production...

Virus proliferation in phosphorus-limited phytoplankton is stimulated by supply of reactive and non-reactive phosphorus during infection, showing that remineralization lysis other cells maintain oligotrophic waters.

Recently, evidence suggests that dark CO2 fixation in the pelagic realm of ocean does not only occur suboxic and anoxic water bodies but also oxygenated meso- bathypelagic waters North Atlantic. To elucidate significance phylogeny key organisms mediating tropical Atlantic, we quantified functional genes indicative for fixation. We used a Q-PCR-based assay targeting bifunctional acetyl-CoA/propionyl-CoA carboxylase (accA subunit), enzyme powering inter alia...

Abstract Kelp aquaculture is globally developing steadily as human food source, along with other applications. One of the newer crop species Saccharina latissima , a northern hemisphere kelp inhabiting temperate to arctic rocky shores. To protect and document its natural genetic variation at onset this novel aquaculture, well increase knowledge on taxonomy phylogeography, we collected new data, both nuclear mitochondrial, combined it previous estimate connectivity infer colonization history....

Abstract. Hydrothermal vent fields found at mid-ocean ridges emit hydrothermal fluids that disperse as neutrally buoyant plumes. From these seafloor massive sulfides (SMS) deposits are formed, which being explored possible new mining sites for (trace) metals and rare earth elements (REEs). It has been suggested during activities large amounts of suspended matter will appear in the water column due to excavation processes discharge waste from surface vessel. Understanding how plumes can be...

AME Aquatic Microbial Ecology Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout JournalEditorsSpecials 68:215-230 (2013) - DOI: https://doi.org/10.3354/ame01610 Diversity and abundance of ammonia-oxidizing Archaea Bacteria in tropical cold-water coral reef sponges Joana F. M. Cardoso1,2,*, Judith D. L. van Bleijswijk1, Harry Witte1, Fleur C. Duyl1 1NIOZ Royal Netherlands Institute for Sea Research, PO Box 59, 1790 AB Den...

Summary An 8‐year time‐series in the Western Antarctic Peninsula (WAP) with an approximately weekly sampling frequency was used to elucidate changes virioplankton abundance and their drivers this climatically sensitive region. Virioplankton abundances at coastal WAP show a pronounced seasonal cycle interannual variability timing magnitude of summer maxima. Bacterioplankton is most influential driving factor virioplankton, exhibit closely coupled dynamics. Sea ice cover duration predetermine...

Abstract Five bottle incubation experiments were done to investigate the grazing and food selection by copepod Calanus finmarchicus (Gunnerus) during a phytoplankton bloom in aN P fertilized mesocosm. The biomass was dominated diatoms lager dinoflagellates (< 35 µm), while haptophyte Emiliania huxleyi (Lohmann) Hay et Mohler numerically (up 10 · 103 ml−1). concentration of (35 µm) always low (≤39 ciliate abundance mesocosm within lower end previous recordings at start period (3.8 ml−1),...

Abstract. Interpreting lipid biomarkers in the sediment archive requires a good understanding of their application and limitations modern systems. Recently it was discovered that marine bacteria performing anaerobic ammonium oxidation (anammox), belonging to genus Ca. Scalindua, uniquely synthesize stereoisomer bacteriohopanetetrol (“BHT-x”). The ratio BHT-x over total (BHT, ubiquitously synthesized by diverse bacteria) has been suggested as proxy for water column anoxia. As BHT found...

Plastic pollution in coastal areas, particularly subtropical and tropical regions, remains a pervasive environmental issue. Marine plastic debris provides an artificial surface that rapidly accumulates dynamic microbial biofilm upon entering the marine ecosystem. Especially early stages of colonization are critical shaping community. This study investigates colonization, less than week, on five different polymers Caribbean waters through 16S rRNA gene amplicon sequencing. We discovered...