Browsing NIVA Open Access Archive by Title
Now showing items 1231-1250 of 8170
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Effects of acidification on nitrification and associated nitrous oxide emission in estuarine and coastal waters
(Peer reviewed; Journal article, 2023)In the context of an increasing atmospheric carbon dioxide (CO2) level, acidification of estuarine and coastal waters is greatly exacerbated by land-derived nutrient inputs, coastal upwelling, and complex biogeochemical ... -
Effects of aluminium in acidifield aquatic ecosystems
(NIVA-rapport;2806, Research report, 1992)In the acidic aquatic environment, pH, aluminium and calcium are still the three most importent factors to explain losses of biota. The inorganic (labile) monomeric species of aluminium acts as a toxic agent on gill-breathing ... -
Effects of an aquaculture pesticide (diflubenzuron) on non-target shrimp populations: Extrapolation from laboratory experiments to the risk of population decline
(Journal article; Peer reviewed, 2019)Marine aquaculture production has lately experienced high economic growth, but also concerns related to production and environmental contamination. For the Atlantic salmon aquaculture industry, the ectoparasitic crustacean ... -
Effects of artificial ultraviolet B radiation on the macrophyte Lemna minor: a conceptual study for toxicity pathway characterization
(Peer reviewed; Journal article, 2020)Macrophytes inhabit waterways around the world and are used in hydroponics or aquaponics for different purposes such as feed and wastewater treatment and are thus exposed to elevated levels of UVB from natural and artificial ... -
Effects of biometrics, location and persistent organic pollutants on blood clinical-chemical parameters in polar bears (Ursus maritimus) from Svalbard, Norway
(Journal article; Peer reviewed, 2018)In the present study, blood clinical-chemical parameters (BCCPs) were analysed in 20 female and 18 male Svalbard polar bears (Ursus maritimus) captured in spring 2007. The aim was to study how age, body condition (BC), ... -
Effects of changes in monitoring design on precision of time trend assessments for contaminants in biota
(NIVA-rapport;6336, Research report, 2012)Data from the Norwegian CEMP program has been used to analyse how the precision of trend assessments will be affected by changes in the monitoring program. Monitoring with two or three year intervals instead of annually ... -
Effects of climate and eutrophication on the diversity of hard bottom communities on the Skagerrak coast 1990-2010
(Journal article; Peer reviewed, 2015)Eutrophication is one of the most serious environmental problems in the Skagerrak, and climate change may increase eutrophication in the future. This study focused on the effects of eutrophication and climate, and the ... -
Effects of cnidarian biofouling on salmon gill health and development of amoebic gill disease
(Journal article; Peer reviewed, 2018)This study examines the potential implications of biofouling management on the development of an infectious disease in Norwegian farmed salmon. The hydroid Ectopleura larynx frequently colonises cage nets at high densities ... -
Effects of CO2 on growth rate, C:N:P, and fatty acid composition of seven marine phytoplankton species
(Journal article; Peer reviewed, 2015)Carbon dioxide (CO2) is the primary substrate for photosynthesis by the phytoplankton that form the base of the marine food web and mediate biogeochemical cycling of C and nutrient elements. Specific growth rate and elemental ... -
Effects of depth and overgrowth of ephemeral macroalgae on a remote subtidal NE Atlantic eelgrass (Zostera marina) community
(Peer reviewed; Journal article, 2022)We conducted a short-term field sampling complemented with time integrating stable isotope analysis to holistically investigate status and ecological interactions in a remote NE Atlantic Zostera marina meadow. We found ... -
Effects of disturbance and vegetation type on total and methylmercury in boreal peatland and forest soils
(Journal article; Peer reviewed, 2016)Mercury (Hg) concentrations in freshwater fish relates to aquatic Hg concentrations, which largely derives from soil stores of accumulated atmospheric deposition. Hg in catchment soils as a source for aquatic Hg is poorly ... -
Effects of exposing shrimp larvae (Pandalus borealis) to aquaculture pesticides at field relevant concentrations, with and without food limitation
(Peer reviewed; Journal article, 2020)Anti-parasitic drugs used in the aquaculture industry are discharged to the sea after treatment of salmon. In this study, the effects of azamethiphos (AZA) in the Salmosan® formulation and deltamethrin (DEL) in the Alpha ... -
Effects of flow events and nutrient addition on stream periphyton and macroinvertebrates: an experimental study using flumes
(Journal article; Peer reviewed, 2017)We used flume experiments to study the effects of a temporary increase in stream flow on macroinvertebrates, leaf litter breakdown and soft-bodied benthic algae; both as a single stressor and eventually in combination with ... -
Effects of flow regime on benthic algae and macroinvertebrates - A comparison between regulated and unregulated rivers
(Journal article; Peer reviewed, 2016)Natural fluctuations in flow are important for maintaining the ecological integrity of riverine ecosystems. However, the flow regime of many rivers has been modified. We assessed the impact of water chemistry, habitat and ... -
Effects of increased irradiance on biomass, photobiology, nutritional quality, and pigment composition of Arctic sea ice algae
(Peer reviewed; Journal article, 2020)Ice algae are key contributors to primary production and carbon fixation in the Arctic, and light availability is assumed to limit their growth and productivity. We investigated photo-physiological responses in sea ice ... -
Effects of Loma morhua (Microsporidia) infection on the cardiorespiratory performance of Atlantic cod Gadus morhua (L).
(Journal article; Peer reviewed, 2016)The microsporidian Loma morhua infects Atlantic cod (Gadus morhua) in the wild and in culture and results in the formation of xenomas within the gill filaments, heart and spleen. Given the importance of the two former ... -
Effects of long range transported air pollution (LRTAP) on freshwater ecosystem services (ICP Waters report 115/2013)
(NIVA-rapport;6561, Research report, 2013-09)Acid deposition affects the services provided by freshwater ecosystems. The loss of sport fisheries is by far the most important ecosystem service affected. Both inland fisheries (such as brown trout) and anadromous fish ... -
Effects of mining chemicals on fish: exposure to tailings containing Lilaflot D817M induces CYP1A transcription in Atlantic salmon smolt
(Journal article; Peer reviewed, 2015)Background: Mine tailings, containing metals and production chemicals such as flotation chemicals and flocculants, may pose an environmental threat to aquatic organisms living in downstream ecosystems. The aim of this work ... -
Effects of multiple stressors on cyanobacteria abundance vary with lake type
(Journal article; Peer reviewed, 2018)Blooms of cyanobacteria are a current threat to global water security that is expected to increase in the future because of increasing nutrient enrichment, increasing temperature and extreme precipitation in combination ... -
Effects of nitrogen enrichment on zooplankton biomass and N:P recycling ratios across a DOC gradient in northern-latitude lakes
(Peer reviewed; Journal article, 2021)We used data from whole-lake studies to assess how changes in food quantity (phytoplankton biomass) and quality (phytoplankton community composition, seston C:P and N:P) with N fertilization affect zooplankton biomass, ...