Browsing NIVA Open Access Archive by Title
Now showing items 785-804 of 8166
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Cleaner air reveals growing influence of climate on dissolved organic carbon trends in northern headwaters
(Peer reviewed; Journal article, 2021)Surface water browning, the result of increasing concentrations of dissolved organic matter (DOM), has been widespread in northern ecosystems in recent decades. Here, we assess a database of 426 undisturbed headwater lakes ... -
Cleaning Up without Messing Up: Maximizing the Benefits of Plastic Clean-Up Technologies through New Regulatory Approaches
(Peer reviewed; Journal article, 2023)As the global plastics crisis grows, numerous technologies have been invented and implemented to recover plastic pollution from the environment. Although laudable, unregulated clean-up technologies may be inefficient and ... -
Clearway 1, Clearway 2s og Kilfrost. Vurdering av miljøkonsekvenser i overflatevannkilder
(NIVA-rapport;3138, Research report, 1994)Når den nye hovedflyplassen på Gardermoen blir tatt i bruk, vil enkelte overflatevannforekomster, særlig Sogna og Leira, bli utsatt for tilførsler av rester av avisningsmidlene som brukes på fly og bane. Restene av ... -
Climate Change Scenarios for the SCANNET Region
(NIVA-rapport;4663, Research report, 2003)This report is mainly a review of sources for climate change assessments relevant for the SCANNET Region and presents a series of scenarios and results for the SCANNET Field Stations, besides presenting some general aspects ... -
Climate change, cyanobacteria blooms and ecological status of lakes: A Bayesian network approach
(Journal article; Peer reviewed, 2016)Eutrophication of lakes and the risk of harmful cyanobacterial blooms due is a major challenge for management of aquatic ecosystems, and climate change is expected to reinforce these problems. Modelling of aquatic ecosystems ... -
Climate mitigation and intensified forest management in Norway: To what extent are surface waters safeguarded?
(Peer reviewed; Journal article, 2020)While the role of forestry in mitigating climate change is increasingly subject to political commitment, other areas, such as water protection, may be at risk. In this study, we ask whether surface waters are sufficiently ... -
Climate warming feedback from mountain birch forest expansion: Reduced albedo dominates carbon uptake
(Journal article; Peer reviewed, 2013)Expanding high elevation and high latitude forest has contrasting climate feedbacks through carbon sequestration (cooling) and reduced surface reflectance (warming), which are yet poorly quantified. Here, we present an ... -
Climatic effects on a cold stenotherm species Lepidurus arcticus (Branchiopoda, Notostraca) on the southern outreach of its distribution range
(Journal article; Peer reviewed, 2018)On the Norwegian mainland, the Arctic tadpole shrimp Lepidurus arcticus is a typically alpine species mainly co-occurring with fish. The Hardangervidda mountain plateau is the main area of the southernmost L. arcticus ... -
CLIMEX Climate Change Experiment: Final report on Phase I the first year of treatment May 1994 - Desember 1994
(NIVA-rapport;3392, Research report, 1995)Catchment ecosystems are expected to show a cascade of responses to increased CO2 and temperature. The first expected step was observed in the first year of treatment increased CO2 changed rates of photosynthesis and ... -
CLIMEX Climate Change Experiment: Progress report December 1992 - June 1993
(NIVA-rapport;3389, Research report, 1995)This report describes the technical installations at Risdalsheia and the establishment at permanent plots for scientific studies of vegetation and soils at the 5 experimental catchments. -
CLIMEX Climate Change Experiment: Progress report July 1993 - December 1993
(NIVA-rapport;3390, Research report, 1995)This report describes data obtained during the pre-treatment period at the Risdalsheia site. Results from laboratory experiments with plants and soils are also reported. -
CLIMEX Project: Climate data for first year of treatment April 1994 - March 1995
(NIVA-rapport;3339, Research report, 1995)Climate change treatment began in April 1994 at the 2 experimental catchments. At KIM CO2 is increased (to 560 ppm) and air is heated (by 3¨ C in summer and 5¨ C in winter). At EGIL soil is heated. Except for an initial ... -
Climex project: Data report for June 1994 - May 1999
(NIVA-rapport;4157, Research report, 1999)CLIMEX project was conducted from May 1994 to June 1998 and involved whole ecosystem manipulation of temperature and CO2 at the catchment scale. Measurements of precipitation and runoff continued for one-year post-treatment ... -
CLIMEX project: Report on the second year of treatment May 1995 - December 1995
(NIVA-rapport;3526, Research report, 1996)CLIMEX is a integrated, whole-ecosystem research project studying the response of entire forested catchments to increased CO2 and temperature. These whole-catchment manipulation experiments are designed to allow quantification ... -
Climex project: Report on the third year of treatment, May 1996 - December 1996
(NIVA-rapport;3745, Research report, 1997)CLIMEX is an integrated, whole-ecosystem research project studying the response of entire forested catchments to increased CO2 and temperature. These whole-catchment manipulation experiments are designed to allow quantification ... -
CLIMEX project: Response of runoff chemistry after 2 years of elevated CO2 and temperature
(NIVA-rapport;3542, Research report, 1996)CLIMEX is an integrated, whole-ecosystem research project studying the response of entire forested catchments to increased CO2 and temperature. KIM catchment receives clean rain, elevated CO2 and elevated air temperature. ... -
CLIMEX project: Soil moisture monitoring and hydrological response
(NIVA-rapport;3554, Research report, 1996)This report describes the data obtained from the soil moisture monitoring programme and its application in determining catchment hydrological budgets. The hydrological response of the catchments is evaluated through modelling ... -
Co-occurrence, ecological profiles and geographical distribution based on unique molecular identifiers of the common freshwater diatoms Fragilaria and Ulnaria
(Peer reviewed; Journal article, 2022)Diatom taxonomy has evolved in recent years, with many new species described and new approaches such as molecular genetics showing the existence of cryptic diversity within currently accepted species. This cryptic diversity ... -
CO2 increases C-14 primary production in an Arctic plankton community
(Journal article; Peer reviewed, 2013)Responses to ocean acidification in plankton communities were studied during a CO2-enrichment experiment in the Arctic Ocean, accomplished from June to July 2010 in Kongsfjorden, Svalbard (78°56′ 2′′ N, 11°53′ 6′′ E). ... -
Coagulation of phosphorous and organic matter from marine, land-based recirculating aquaculture system effluents
(Peer reviewed; Journal article, 2021)Saline effluents from marine land-based aquaculture production can neither be disposed in common municipal wastewater treatment plants, nor disposed as landfill. Furthermore, stricter environmental regulations require the ...