Publikasjoner
NIBIOs ansatte publiserer flere hundre vitenskapelige artikler og forskningsrapporter hvert år. Her finner du referanser og lenker til publikasjoner og andre forsknings- og formidlingsaktiviteter. Samlingen oppdateres løpende med både nytt og historisk materiale. For mer informasjon om NIBIOs publikasjoner, besøk NIBIOs bibliotek.
2011
Forfattere
Christian PedersenSammendrag
Det er ikke registrert sammendrag
Sammendrag
Norsk genressurssenter
Sammendrag
Beiting i utmark er den mest arealkrevjande næringa vi har i landbruket. I 2009 vart over 30% av landet bruka av 894 beitelag. Desse organiserte 78% av sauen og 29% av storfeet som beita i utmark.
Sammendrag
Kortreist lammekjøtt fra utmarksbeite markedsføres som uovertruffent. Men er virkelig nisjelammekjøttet best? Norsk institutt for skog og landskap har kartlagt utmarksbeiter i ulike deler av landet. Det viser seg at det er store lokale og regionale forskjeller i kvaliteten på beitene, det vil si i mengde og sammensetning av gunstige beiteplanter. Lyngen kommune i Troms er ett av mange områder som har utmarksbeiter av høy kvalitet. Nesten hele kommunens beitearealer er kartlagt, og det viser seg at utmarka er en svært verdifull ressurs. I Lyngen slippes det cirka 12 000 sauer på beite hvert år og dyras fôropptak representerer en kroneverdi på over tre millioner, dersom samme fôrmengde skulle produseres som grôvfor på innmark. For hele landet kan det være snakk om så mye som en milliard kroner.
Forfattere
Christian PedersenSammendrag
Dammer og bekker er viktige småbiotoper i jordbrukets kulturlandskap. Ofte er det knyttet et spesielt dyre- og planteliv til disse landskapselementene. På grunn av intensivering av jordbruket ble mange av bekkene og dammene fylt igjen, og dyre- og plantearter mistet etter hvert leveområdene sine. Dette har medført at mye av det særegne dyre- og plantelivet har gått tilbake.
Forfattere
Christian PedersenSammendrag
Mange av fugleartene som finnes i jordbrukets kulturlandskap sliter i Europa, men også i Norge. I Norge er det 3Q-prosjektet til Norsk institutt for skog og landskap som gjennomfører overvåkning av fugler i jordbrukslandskapet – i tett samarbeid med Norsk Ornitologisk Forening.
Sammendrag
Norsk genressurssenter
Forfattere
Felix Herzog Katalin Balázs Peter Dennis Tetyana Dyman Wendy Fjellstad Jürgen Friedel Salah Garchi Philippe Jeanneret Rob Jongman Maximilian Kainz Gerardo Moreno Charles Nkwiine Maurizio Paoletti Philippe Pointereau Jean-Pierre Sarthou Siyka Stoyanova Davide ViaggiSammendrag
Farmland biodiversity is an important component of Europe’s biodiversity. More than half the continent is occupied by agricultural lands. They host specific habitats and species, which - in addition to their conservation values they provide - perform vital ecological functions. Indicators are needed to enable the monitoring of biodiversity at the farm level for the purpose of assessing the impacts of farming practices and of agricultural policies. Our research aims at identifying farmland biodiversity indicators which are scientifically sound, operational and relevant for stakeholders. We screened the literature for farmland biodiversity indicators and, in an iterative process with stakeholders, we identified 28 candidate indicators for genetic, species and habitat diversity. Those selected biodiversity indicators, as well as 14 management indicators that are known to relate to biodiversity, were assessed in 12 case study regions across Europe. Each case study region represents a typical production system (i.e. specialist field crops, horticulture and permanent crops; specialist grazing with cattle and other livestock types; mixed crop and livestock farming). In each region, 8-20 farms were randomly selected, mostly within the two groups of organic and non-organic farms, to obtain a gradient of farming intensity. Indicators were measured applying standardized sampling procedures and farm interviews. Sampling effort was recorded in order to assess the cost of indicator measurement. For each case study region, biodiversity indicators are presently being evaluated in conjunction with management indicators. Surrogate indicators will be proposed when possible and indicators will be prioritized taking into account their validity, practicality, cost and priority for stakeholders. Based on preliminary results, the presentation will focus on the specific challenges of farm level monitoring, addressing issues of sampling design within the farms and up-scaling from plot to farm to region. Part of this research was funded by the EU FP7 contract KBBE-2B-227161. For more information consult www.biobio-indicator.org
Sammendrag
Understanding the driving forces affecting species occurrences is a prerequisite for determining the indicator suitability of crenic plants. We analysed 18 environmental variables in a two-step approach, evaluating their ability to explain the species composition of 222 springs on five siliceous mountain ranges, in central Germany and north-west Czech Republic (49.9°–50.8°N, 10.6°–12.8°E). First, we identified the significant environmental variables in three subsets of spatial, hydrophysical and hydrochemical variables using a forward-selection procedure. We then performed a partial canonical correspondence analysis (pCCA) to estimate the influence of each subset alone, as well as in combinations. We also used a multiple response permutation procedure (MRPP) to compare the five regions with respect to the dissimilarity of their vegetation composition and environmental variables. Hydrochemical factors played a fundamental role in determining the plant community of the investigated springs. Spatial factors, in particular altitude, were correlated with the hydrochemical factors, but were less important. Hydrophysical factors played only a marginal role. More precisely, species occurrence was mainly driven by a gradient of nutrient availability, which in turn reflected the acidity status. This gradient was primarily represented by high Al, Cd, and Mn concentrations in acidic crenic waters, high Ca and Mg concentrations were encountered in circumneutral springs. By comparing the five regions we could show that there are spatial patterns in the vegetation of springs, which provide valuable ecological information on the water quality. We therefore suggest that biomonitoring approaches to vegetation are suitable for revealing the acidity status of springs and their forested catchments.
Sammendrag
Forest regrowth in rural districts of Norway is currently leading to extensive landscape changes. We aim to quantify and understand the future impact of outfield forest regrowth following land-use abandonment on red-listed vascular plant species which are supposedly threatened by regrowth in Norway, i.e. species classified to habitats within the semi-natural landscape. Vascular plant species were defined by the Norwegian Red List and presence data was downloaded from the Norwegian GBIF-node, Artskart. A newly developed spatially explicit model of deforested semi-natural heaths and meadows in Norway was used to evaluate the vulnerability of red-listed plants to future forest regrowth. The results show that some red-listed species may be greatly affected, since they have most of their known populations within the modelled areas of future forest regrowth. The study also revealed that there are many methodological challenges in using museum databases for hypothesis testing. However, the use of such databases was clearly hypothesis generating, giving us many ideas for future studies.