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Integrative taxonomy of an arctic bumblebee species complex highlights a new cryptic species (Apidae: Bombus)
- B. Martinet, T. Lecocq, P. Rasmont
- Environmental Science, BiologyZoological Journal of the Linnean Society
- 25 October 2019
An integrative taxonomic approach based on novel genetic and eco- eco-chemical datasets is used to resolve the taxonomic status of Bombus lapponicus and B. sylvicola and reveals a new cryptic arctic species in the B. lappicola-Pyrobombus complex.
Monitoring of Raptors and Their Contamination Levels in Norway
- J. Gjershaug, J. Kålås, T. Nygård, D. Herzke, A. O. Folkestad
- Environmental ScienceAmbio
- 1 September 2008
Time trends for pollutants and shell thickness over 4 decades of raptor monitoring and contamination studies in Norway of the golden eagle, gyrfalcon, white-tailed sea eagle, osprey, peregrine, and merlin are produced.
Following the cold: geographical differentiation between interglacial refugia and speciation in the arcto‐alpine species complex Bombus monticola (Hymenoptera: Apidae)
The results support the hypothesis that post‐Ice Age periods can lead to speciation in cold‐adapted species through distribution range contraction and underline the importance of an integrative taxonomic approach for rigorous species delimitation, and for evolutionary study and conservation of taxonomically challenging taxa.
Convergent evolution and paraphyly of the hawk‐eagles of the genus Spizaetus (Aves, Accipitridae) – phylogenetic analyses based on mitochondrial markers
Investigations indicate that hawk-eagles represent a paraphyletic assemblage and thus their external similarities have to be ascribed to convergent evolution, and suggest assigning the species of the genus Spizaetus to three different genera.
Spatial prioritisation of environmental service payments for biodiversity protection. Report SNR 4746/2003
Local resources, linear elements and mass-flowering crops determine bumblebee occurrences in moderately intensified farmlands
Species or subspecies? The dilemma of taxonomic ranking of some South-East Asian hawk-eagles (genus Spizaetus)
- A. Gamauf, J. Gjershaug, N. Røv, K. Kvaløy, E. Haring
- BiologyBird conservation international
- 1 April 2005
A molecular phylogeny of the Spizaetus cirrhatus complex is presented, based on two sections of the mitochondrial genome: partial sequences of the cytochrome b gene and of the control region (CR), suggesting a more recent radiation of this group of hawk-eagles in the course of the last ice ages.
Habitat Use and Diet Composition of Norwegian Lemmings and Field Voles in Central Norway
This study examined habitat use and diet composition of Norwegian lemmings and field voles, which occur together and potentially compete for resources in alpine areas of central Norway, finding a clear preference for monocots in their diet.
Phylogeny and new taxonomy of the Booted Eagles (Accipitriformes: Aquilinae).
- Heather R. L. Lerner, L. Christidis, J. Gjershaug
- Biology, Environmental ScienceZootaxa
- 9 January 2017
A phylogeny of all booted eagles (38 extant and one extinct species) is presented based on analysis of published sequences from seven loci and the recently resurrected genus Clanga is applied for the spotted eagles to resolve the paraphyly of the genus Aquila.
Home-range size of the Javan Hawk-Eagle (Spizaetus bartelsi) estimated from direct observations and radiotelemetry
It is proposed that Nisaetus floris (Flores Hawk-eagle) should be treated as a distinct species, whereas the taxonomic status of NISAetus c.