Dominika Krzeminska
Avdelingsleder/forskningssjef
(+47) 915 98 728
dominika.krzeminska@nibio.no
Sted
Ås - Bygg O43
Besøksadresse
Oluf Thesens vei 43, 1433 Ås (Varelevering: Elizabeth Stephansens vei 21)
Sammendrag
Rapporten dokumenterer tømming av-, renseeffekt i- og sannsynlige tilførselskilder til Skuterud fangdam, som ble etablert for å redusere avrenning av jord og fosfor fra jordbruksarealer til Østensjøvannet, Akershus fylke. Fangdammen består av en sedimentasjonsdam og to våtmarksfiltre, og utgjør 0,051 % av nedbørfeltets areal og 0,09 % av jordbruksarealet i nedbørfeltet. I perioden 2003-2020 ble det samlet opp og fjernet ca. 1140 tonn sedimenter og ca. 1100 kg total fosfor fra fangdammen. Store partikler sedimenterte i sedimentasjonsdammen, mens de minste partiklene sedimenterte i våtmarksfiltrene. Korrelasjonen mellom innhold av leire og total fosfor (og total fosfor og P-AL) var god, noe som viser viktigheten av beplantede våtmarksfilter med tilstrekkelig areal og oppholdstid til at små partikler kan synke til bunns og holdes tilbake. Sedimenter fra sedimentasjonsdammen hadde samme egenskaper som jordprøver fra bekkekanten, noe som tyder på at kilden var kanterosjon i bekken. Jordprøver fra åker og kantsoner langs fangdammen hadde høyere innhold av leire enn sedimenter fra våtmarksfiltrene, likevel var fosforinnholdet mye lavere. Tidligere studier har vist at jordbruksjord oppstrøms fangdammen hadde langt høyere næringsinnhold enn jordbruksjord langs bekken, noe som tyder på at fangdammen ble tilført partikler fra erosjon av mer næringsrik jord oppstrøms i nedbørfeltet.
Sammendrag
Fertilizers and pesticides contribute to the pollution of water resources. The areas along streams are affected by climate change as stream bank failures often occur following floods or during prolonged rainfalls. In addition to BMP (best management practices) on the fields, grassed cover buffer zones are one of the most common measures for improving water quality in Norway’s agricultural catchments. Increased focus on buffer zones is important in a future climate perspective, both for food production, natural diversity and water quality. The efficiency of vegetation cover is composed of a variety of factors; therefore, effectives of these measures are to a large degree site specific. Recently, increased attention is given to the buffer zones efficiency, depending on both conditions in the catchments and the design of the buffer zones itself. However, most research is focusing in investigating the effect of buffer zones looking mostly at the surface runoff. According to our knowledge there is no previous research investigating the efficiency of the buffer zones with flower mixture. We focus on these types of vegetation as they also stimulate increased biodiversity. Moreover, previous investigations show that more than 50% of simulated runoff infiltrates into buffer zones with grass and bushes, while within buffer zones with trees there all the water infiltrates into the soil. Herein we show the results of 3 years monitoring surface runoff from buffer zones with different types of plant cover (grass and flower mixture). The idea was to monitor real live surface runoff from the field with autumn tillage (as “worst case scenario”). The results show significant differences, especially in the runoff quality. The visual differences are confirmed by water quality analysis.
Forfattere
Martyn Futter Emma Lannergård Katrin Bieger Csilla Farkas Jens Fölster Pia Geranmayeh Anastasija Isidorova Brien Kronvang Dominika Krzeminska Katarina Kyllman Ainis Lagzdins Anu Lähteenmäki-Uutela Hannu Marttila Michael Peacock Katri Rankinen Eva Skarbøvik Anne Lyche Solheim Pasi Valkama Joachim AudetSammendrag
Society increasingly expects that food will be produced in a sustainable, climate-smart manner. Nature based solutions (NBS), including ponds and constructed wetlands are widely promoted by researchers as a class of measures promoting healthy agricultural landscapes. However, a range of trade-offs associated with NBS influence practitioner’s decisions about their implementation and use. Making the right decisions about NBS requires, amongst other things, access to data from environmental monitoring programmes. The value of monitoring programmes depends on how well the data they collect and curate can be used to support decision-making. Here, we present a conceptual framework for assessing the value of monitoring programmes based on the relevance of the data they collect to decision maker needs, their overall running costs and their levels of uncertainty in characterizing the state of the environment. We demonstrate how our proposed framework can be used to assess the value of a range of monitoring programmes for quantifying trade-offs between nutrient load reduction and climate impacts from artificial wetlands in agricultural landscapes.
Divisjon for miljø og naturressurser
MARCHES - Methodologies for Assessing the Real Costs to Health of Environmental Stressors
Divisjon for miljø og naturressurser
NORDBALT ECOSAFE: Nitrogen and phosphorus load reduction approach within safe ecological boundaries for the Nordic Baltic region
About the project
Divisjon for miljø og naturressurser
ENGAGE: Europe Nutrient Management - Guided Approaches for Greater Export reduction
ENGAGE aims to operationalise a novel vision for the future of multi-scale nutrientexport reduction and associated ecosystem services in national andtransboundary/international river basins in Europe by bringing together robuststakeholder engagement strategies with coupled state-of-the-art computationalhydrology techniques and online interactive use-tailored DS tool approaches that integrate remote sensing, socio-economic, governance, and society-change decisionelements.
Divisjon for matproduksjon og samfunn
ECONUTRI
Innovative concepts and technologies for ECOlogically sustainable NUTRIent management in agriculture aiming to prevent, mitigate and eliminate pollution in soils, water and air
Divisjon for miljø og naturressurser
Hydrologiske strategier for optimalisering av funksjonen til fangdammer i et endret klima
Fangdammer er kjent som effektive tiltak for å redusere forurensning og forbedre vannkvalitet i jordbruksbekker.