A5026028618- Marine and coastal ecosystems
- Coastal wetland ecosystem dynamics
- Microbial Community Ecology and Physiology
- Environmental DNA in Biodiversity Studies
- Marine Biology and Ecology Research
- Identification and Quantification in Food
- Marine and fisheries research
- Marine Invertebrate Physiology and Ecology
- Coastal and Marine Dynamics
- Marine and environmental studies
- Methane Hydrates and Related Phenomena
- Isotope Analysis in Ecology
- Hydrology and Watershed Management Studies
- Marine Ecology and Invasive Species
- Soil and Water Nutrient Dynamics
- Classical Antiquity Studies
- Geology and Paleoclimatology Research
- Coastal and Marine Management
- Soil erosion and sediment transport
UiT The Arctic University of Norway
2020-2024
Marine Biological Laboratory
2012-2018
Abstract Although metabarcoding is a well-established tool for describing diversity of pelagic communities, its quantitative value still controversial, with poor correlations previously reported between organism abundance/biomass and sequence reads. In this study, we explored an enhanced approach by whole zooplankton communities using highly degenerate primer set the mitochondrial marker cytochrome oxidase I compared results to biomass estimates obtained traditional morphological processing...
The invasive ctenophore, Mnemiopsis leidyi, which had its first mass occurrence in Limfjorden (Denmark) 2007, and the indigenous common jellyfish, Aurelia aurita, were studied from autumn 2008 through summer 2009. By December 2008, both A. aurita M. leidyi populations disappeared for winter. In 2009, appeared February medusae attained their maximum umbrella diameter by end of June, when estimated half-life copepods was only 1.6 ± 1.1 d. Low densities early July (< 0.5 m -3 ) increased to...
The population dynamics of the invasive ctenophore Mnemiopsis leidyi, which showed mass occurrence in Kerteminde Fjord (Denmark) for first time 2007, and indigenous common jellyfish, Aurelia aurita, was followed fjord system Fjord/Kertinge Nor during late 2008 2009. density A. aurita always highest Kertinge while M. leidyi Fjord, indicating recruitment from adjacent sea (Great Belt). In shallow cove Nor, ephyrae appeared March, by end May medusae had obtained their maximum umbrella diameter...
Abstract The traditional view is that the Arctic polar night a quiescent period for marine life, but recent reports of high levels feeding and reproduction in both pelagic benthic taxa have challenged this. We examined zooplankton community present Svalbard fjords, coastal waters, shelf break north Svalbard, during night. focused on population structure abundant copepods ( Calanus finmarchicus , glacialis Metridia longa Oithona similis Pseudocalanus spp., Microcalanus Microsetella norvegica...
A series of eight watersheds on the Pacific coast Panama where conversion mature lowland wet forest to pastures by artisanal burning provided watershed-scale experimental units with a wide range cover (23, 29, 47, 56, 66, 73, 91, and 92 %). We used these as landscape-scale experiment assess effects degree deforestation within-watershed retention hydrological export atmospheric inputs nutrients. Retention was estimated comparing rainfall nutrient concentrations (volume-weighted allow for...
MEPS Marine Ecology Progress Series Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout JournalEditorsTheme Sections 482:1-15 (2013) - DOI: https://doi.org/10.3354/meps10358 FEATURE ARTICLENutrient gradients in Panamanian estuaries: effects of watershed deforestation, rainfall, upwelling, and within-estuary transformations Ivan Valiela1,*, Anne Giblin1, Coralie Barth-Jensen1, Carolynn Harris1, Thomas Stone2, Sophia Fox3,...
Reproductive rates of copepods are temperature-dependent, but poorly known for small at low temperatures, hindering the predictions population dynamics and secondary production in high-latitude ecosystems. We investigated egg hatching rates, success Oithona similis Microsetella norvegica (sac spawners) Microcalanus pusillus (broadcast spawner) between March August. Incubations were performed ecologically relevant temperatures 1.3 13.2°C, calculated. All positively correlated to temperature,...
Abstract Zooplankton consumption of sinking aggregates affects the quality and quantity organic carbon exported to deep ocean. Increasing laboratory evidence shows that small particle‐associated copepods impact flux attenuation by feeding on particles, but this has not been quantified in situ. We investigated an abundant particle‐colonizing copepod, Microsetella norvegica , vertical a sub‐Arctic fjord. This study combines field measurements flux, abundance, size‐distribution marine snow...