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.
2025
Sammendrag
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Forfattere
Arne StensvandSammendrag
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Forfattere
Martha Kandziora Diana L. A. Vásquez Christian Brochmann Abel Gizaw Seid A Lovisa S Gustafsson Desalegn Chala Gelete Mercè Galbany‐Casals Filip Kolář Petr Sklenář Nicolai M. Nürk Roswitha SchmicklSammendrag
Aim Species coexistence is based on resource partitioning and modulates biodiversity patterns across climates, latitudes and altitudes. Resource partitioning can occur via niche size or separation in the geographic range or ecological niche. While resource partitioning promotes biodiversity, the impact of different partitioning strategies on species richness remains largely unexplored. Location Two ecosystems with similar climates and ages are the species‐rich tropical alpine ecosystem in the South American Andes and the more species‐poor tropical alpine ecosystem in the eastern African mountains. Time Period Present‐day distribution and climatic conditions, integrating phylogenetic information extending back to the last 7 million years maximum. Major Taxa Studied Six lineages from the Asterales; three in each ecosystem, respectively. Methods We test whether geographic range and climatic niche partitioning strategies may explain differences in species richness between two ecosystems. We combine phylogenomic data with occurrence records and estimate metrics of size and overlap for climatic niche and geographic range. Results We show that the Andean species have larger climatic niches than the African species, suggesting that niche size is not explaining higher species richness in the Andes. Instead, a striking pattern for species with overlapping geographic ranges emerged: the Andean species show less climatic niche overlap than the African species, indicating more effective niche separation among Andean species. Main Conclusions We hypothesise that differences in resource partitioning, specifically increased niche separation among geographically overlapping species in the Andes compared to the eastern African mountains, contribute to the species richness difference between these tropical alpine biodiversity hotspots.
Forfattere
Stefano Zanotto Chloé Grieu Jon Arne Dieseth Muath K Alsheikh Wendy Marie Waalen Susanne Skinnehaugen Windju Anne Kjersti UhlenSammendrag
Pea (Pisum sativum L.) plays a central role for achieving the goal of increased self-sufficiency of plant-based protein for food and feed in Norway. This study characterized 36 pea genotypes of mainly Nordic and eastern European origin grown in a multi-environment field trial in Norway for various agronomic traits including grain and protein yield. The same accessions were also genotyped with a single nucleotide polymorphism (SNP) chip array to investigate the genetic diversity both at the phenotypic and genomic levels. Variance component (VC) analyses found that genotype (G) and genotype by year by location (G × Y × L) interaction VC were the main sources of variation for all the considered traits, with G × Y × L being strongly affected by the different climatic conditions which characterized the two test years. A further dissection of the genotype by environment interactions (GEI) through Additive Main effects and Multiplicative Interaction (AMMI), highlighted pea cultivars which outperformed the reference Norwegian variety Ingrid both in term of yield, protein content and protein yield. Measurements of genetic distance based on phenotypic and genomic data were significantly correlated and distinguished the material in three main clusters which were partially associated with their geographic origin. Overall, this work identified pea genotypes which can be successfully grown in Norway and used as source of genetic diversity for future breeding efforts targeting the Norwegian environment.
Forfattere
Ievina SturiteSammendrag
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Forfattere
Ievina SturiteSammendrag
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Sammendrag
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Forfattere
Lena Wohlgemuth Mathieu Jonard Andreas Schmitz Peter Waldner P. Schmidt Walter Heleen Deroo Nathalie Cools Bruno de Vos Anne Thimonier Arne Verstraeten Inken Krüger Volkmar Timmermann Mathias Neumann Pasi Rautio Kai SchwärzelSammendrag
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Forfattere
Marte Persdatter TangvikSammendrag
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Forfattere
May Bente BrurbergSammendrag
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