Blar i NIVA Open Access Archive på tittel
Viser treff 985-1004 av 8170
-
Disappearing Blue Mussels – Can Mesopredators Be Blamed?
(Peer reviewed; Journal article, 2020)Despite many theories, the recent evident decreases in blue mussel (Mytilus edulis) abundance in southern Norway and western Sweden (eastern North Sea) have not yet been explained. To test the possible role of increased ... -
Discharge from NCC’s snow melting barge at the Akerhuskaia reduced temperatures in Oslofjord
(NIVA-rapport;6671, Research report, 2014)The objective of this work was to describe how discharged cold water from a snow melting barge at Oslo harbour reduces the temperatures in the fjord. It was of special interest to study how the discharged water might ... -
Disinfection by-products and ecotoxicity of ballast water after oxidative treatment – Results and experiences from seven years of full-scale testing of ballast water management systems
(Journal article; Peer reviewed, 2013)Since 2005, five different ballast water management systems (BWMS) based on chlorination treatment have been tested by Norwegian Institute for Water Research (NIVA) according to guidelines from the International Maritime ... -
Disinfection of Paramoebae perurans with UV and ozoneIn situ dose-response testing
(NIVA-rapport;6909, Research report, 2015)Lab cultures of the amoebae Paramoebae perurans was exposed to UV irradiance at varying durations or ozonated seawater with varying residual oxidant (TRO) concentrations. The response to the treatment was observed as both ... -
Dispersal and Deposition of Detritus From Kelp Cultivation
(Peer reviewed; Journal article, 2022)A high resolution coastal and ocean hydrodynamic model system was used to investigate the transport and deposition patterns of Particulate Organic Matter (POM) from kelp farmed at three locations of different properties: ... -
Disponering av avløpsvann fra Rogaland Fellessalg, Slakterianlegg på Forus. Forslag til anordning for dypvannsutslipp i Gandsfjorden
(NIVA-rapport;0142, Research report, 1965) -
Disponering av avvannet slam. Sigevannsproblemer ved lagring av ulike slamtyper
(NIVA-rapport;1068, Research report, 1978)Rapporten omhandler: Lover, forskrifter, retningslinjer og berørte myndigheter ved disponering av slam, miljøproblemer og hygieniske problemer vedr. slamdisponering, slamdeponier på Grønmo søppelfyllplass i Oslo. -
Dissolved methane in the residual basins of the Aral Sea
(Peer reviewed; Journal article, 2019)Due to catastrophic desiccation, today's Aral Sea consists of a few separate residual basins, characterized by different ecological conditions (the Large Aral, Lake Tshchebas, the Small Aral). This study is the first report ... -
Distinct Seasonal Primary Production Patterns in the Sub-Polar Gyre and Surrounding Seas
(Peer reviewed; Journal article, 2021)Primary production (PP) in the sub-polar region appears to be important for ocean carbon uptake but how the different water masses contribute to the PP occurring here has not yet been described. Using two models based on ... -
Distinguishing between Sources of Natural Dissolved Organic Matter (DOM) Based on Its Characteristics
(Peer reviewed; Journal article, 2023)Increasing levels of dissolved organic matter (DOM) in watercourses in the northern hemisphere are mainly due to reduced acid rain, climate change, and changes in agricultural practices. However, their impacts vary in time ... -
Distribution and abundance of phytobenthic communities: Implications for connectivity and ecosystem functioning in a Black Sea Marine Protected Area
(Journal article; Peer reviewed, 2018)The distribution and abundance of macroalgal communities in a Marine Protected Area (MPA) along the Bulgarian Black Sea coast were mapped and quantified, with particular focus on the previously unstudied P. crispa ... -
Distribution and abundance of the invasive seagrass Halophila stipulacea and associated benthic macrofauna in Carriacou, Grenadines, Eastern Caribbean
(Journal article; Peer reviewed, 2018)The invasive seagrass Halophila stipulacea has spread throughout the eastern Caribbean since it was first recorded in Grenada in 2002. We quantified the distribution and abundance of H. stipulacea, and its associated ... -
Distribution of floating marine macro-litter in relation to oceanographic characteristics in the Russian Arctic Seas
(Peer reviewed; Journal article, 2021)The main objectives of this work were the acquisition of new data on floating marine macro litter (FMML) and natural floating objects in the Arctic seas, an initial assessment of the level of pollution by FMML and an ... -
Distribution of non-native brook trout (Salvelinus fontinalis ) across Norwegian waterbodies – is it an invasive species?
(Journal article; Peer reviewed, 2018)Non-native brook trout (Salvelinus fontinalis MITCHILL, 1815) was introduced into Norway in 1883. However, it was not until the late 1970s that this acid-tolerant salmonid species was stocked into many acidified lakes that ... -
Distribution of sediment properties in coastal areas adjacent to fish farms and environmental evaluation of five locations surveyed in Oktober 1993
(NIVA-rapport;3102, Research report, 1994)Analyses of various chemical properties in sediments collected in various projects during the period 1984 - 93 was reviewed to establish characteristic environmental gradients at fish farm locations. The multiple property ... -
Distribution pattern of mercury in northern Barents Sea and Eurasian Basin surface sediment
(Peer reviewed; Journal article, 2022)Marine sediment is a significant sink for the global pollutant mercury. In a rapidly changing Arctic region, mercury (Hg) bioaccumulation in the marine ecosystem remains a prominent environmental issue. Here, we report ... -
Distribution, identification and range expansion of the common Asellidae in Northern Europe, featuring the first record of Proasellus meridianus in the Nordic countries
(Peer reviewed; Journal article, 2020)Two out of the three common Asellidae species in Northern Europe are increasing their ranges, aided by human activities. Here we report the discovery of Proasellus coxalis (Dollfuss 1892) in new areas in Norway and the ... -
Distribution, structure and function of Nordic eelgrass (Zostera marina) ecosystems: Implications for coastal management and conservation
(Journal article; Peer reviewed, 2014)1. This paper focuses on the marine foundation eelgrass species, Zostera marina, along a gradient from the northern Baltic Sea to the north-east Atlantic. This vast region supports a minimum of 1480km 2 eelgrass (maximum ... -
Diurnal variability of persistent organic pollutants in the atmosphere over the remote Southern Atlantic Ocean
(Journal article; Peer reviewed, 2014)A diel (24-h) cycle with daytime atmospheric concentrations higher than nighttime concentrations by a factor of 1.5–3 was observed for several low molecular weight polychlorinated biphenyls (PCBs) and polycyclic aromatic ... -
Diverse land use and the impact on (Irrigation) water quality and need for measures - A case study of a Norwegian river
(Journal article; Peer reviewed, 2015)Surface water is used for irrigation of food plants all over the World. Such water can be of variable hygienic quality, and can be contaminated from many different sources. The association of contaminated irrigation water ...