Search results for " Marine"
showing 10 items of 1338 documents
Physical oceanography, sea-bed photographs and videos of benthos from the Weddell Sea taken with remote operated vehicle CHEROKEE during POLARSTERN c…
2010
The marine ecosystem on the eastern shelf of the Antarctic Peninsula was surveyed 5 and 12 years after the climate-induced collapse of the Larsen A and B ice shelves. An impoverished benthic fauna was discovered, that included deep-sea species presumed to be remnants from ice-covered conditions. The current structure of various ecosystem components appears to result from extremely different response rates to the change from an oligotrophic sub-ice-shelf ecosystem to a productive shelf ecosystem. Meiobenthic communities remained impoverished only inside the embayments. On local scales, macro- and mega-epibenthic diversity was generally low, with pioneer species and typical Antarctic megabent…
Harmonizing circumpolar monitoring of Arctic fox: benefits, opportunities, challenges and recommendations.
2017
Source at http://dx.doi.org/10.1080/17518369.2017.1319602 The biodiversity working group of the Arctic Council has developed pan-Arctic biodiversity monitoring plans to improve our ability to detect, understand and report on long-term change in Arctic biodiversity. The Arctic fox (Vulpes lagopus) was identified as a target of future monitoring because of its circumpolar distribution, ecological importance and reliance on Arctic ecosystems. We provide the first exhaustive survey of contemporary Arctic fox monitoring programmes, describing 34 projects located in eight countries. Monitored populations covered equally the four climate zones of the species’ distribution, and there were large dif…
Norske ledere i fremmedkulturelle situasjoner : en kvalitativ studie av beslutningsadferd i Maritime Hydraulics AS
2004
Hovedoppgave i Industriell økonomi og informasjonsledelse, Høgskolen i Agder, Grimstad Dagens ledere står overfor stadig nye utfordringer, for eksempel gjennom økt internasjonalisering. Nye utfordringer gjør lederadferd viktigere enn noen gang. Vi ønsket å undersøke og kartlegge norske lederes adferd. Vi har formulert følgende forskningsspørsmål som avhandlingen søker svar på: I en norsk bedrift, hvordan utøver norske ledere i fremmedkulturelle situasjoner lederadferd i beslutningsprosesser? For å få svar på dette undersøkte vi erfaringene til et utvalg av ledere i én norsk bedrift. Undersøkelsen viser at fremmedkulturelle situasjoner synes å påvirke lederadferd når beslutningsalternativer …
THE DESIGN OF WAITING AREAS TO OPTIMIZE THE STORAGE CAPACITY IN THE MARINE INTERMODAL TERMINALS
2009
The appropriate sizing of storage areas to optimize the management of intermodal transport, the adoption of environment protection systems and the appropriate flow’s regulations inside manoeuvre’s zones can solve many problems encountered today in a intermodal marine terminal. For these reasons the “integrated design” of storage areas for vehicles and containers is considered essential to ensure efficiency and functionality for all harbour-system. So is here proposed a simulative model as a tool for a more correct design of waiting areas by considering the real stochastic conditions of the process of the arrivals. For the sizing of areas for containers in the harbours, it is necessary to re…
The role of natural science collections in the biomonitoring of environmental contaminants in apex predators in support of the EU’s zero pollution am…
2022
Movalli, Paola et al.
International Legal Approaches to Waste Water Discharges. Opening speech
2002
En este discurso inaugural, realizo una introducción a la frustrante situación jurídica en la que se encuentran las descargas de aguas residuales a nivel internacional. Las descargas de aguas residuales son la mayor fuente de contaminación marina y, en consecuencia, ellas representan el mayor riesgo actual para la protección del medio ambiente marino. In this opening speech, I make an introduction to the disappointing legal situation of waste water discharges at international level. Waste water discharges is the main source of marine pollution and, therefore, they represent the major current risk to the protection of the marine environment.
Reto un izzūdošo Latvijas savvaļas orhideju bioloģiskās īpatnības in situ un in vitro
2012
Promocijas darbs (publikāciju kopa) tika izstrādāts V/a „Nacionālais Botāniskais dārzs Augu valsts bioloģiskās daudzveidības in vitro saglabāšanas nodaļā laika posmā no 2008. līdz 2011. gadam. Ģenētiskie pētījumi tika veikti LU Bioloģijas institūta Augu Ģenētikas laboratorijā 2010. un 2012. gadā.
Modelling biogeochemical processes in sediments from the north-western Adriatic Sea: response to enhanced particulate organic carbon fluxes
2018
This work presents the result of a study carried out in the north-western Adriatic Sea, by combining two different types of biogeochemical models with field sampling efforts. A longline mussel farm was taken as a local source of perturbation to the natural particulate organic carbon (POC) downward flux. This flux was first quantified by means of a pelagic model of POC deposition coupled to sediment trap data, and its effects on sediment bioirrigation capacity and organic matter (OM) degradation pathways were investigated constraining an early diagenesis model by using original data collected in sediment porewater. The measurements were performed at stations located inside and outside the ar…
Investigation of marine and continental layers in a stalactite older than 1 million years (Custonaci, north-western sector of Sicily)
2012
Questo lavoro si basa sul ritrovamento, in una grotta carsica, a 100 metri di quota a Custonaci in provincia di Trapani, di una stalattite di notevole interesse paleo climatico, ricoperta da coralli marini, la cui sezione rivela la presenza di 3 Iatus che denotano una interruzione della deposizione di carbonato continentale presumibilmente in seguito a trasgressioni marine. Il carbonato, datato attraverso la metodologia 230Th/U MC-ICPMS (NeptunePlus), ha fornito una età più antica del limite temporale massimo di applicabilità del metodo ( 600 ka). I coralli, che ricoprono il livello continentale più giovane, analizzati usando il rapporto 87Sr/86Sr, hanno fornito una età di 1.1±0.2 Myrs. Al…
Modéliser la réponse des espèces marines antarctiques aux changements environnementaux. Méthodes, applications et limites.
2021
Among tools that are used to fill knowledge gaps on natural systems, ecological modelling has been widely applied during the last two decades. Ecological models are simple representations of a complex reality. They allow to highlight environmental drivers of species ecological niche and better understand species responses to environmental changes. However, applying models to Southern Ocean benthic organisms raises several methodological challenges. Species presence datasets are often aggregated in time and space nearby research stations or along main sailing routes. Data are often limited in number to correctly describe species occupied space and physiology. Finally, environmental datasets …