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Isabella Børja
Researcher at Norwegian Forest and Landscape Institute
Publications - 51
Citations - 1488
Isabella Børja is an academic researcher from Norwegian Forest and Landscape Institute. The author has contributed to research in topics: Picea abies & Hymenoscyphus fraxineus. The author has an hindex of 17, co-authored 48 publications receiving 1243 citations. Previous affiliations of Isabella Børja include Forest Research Institute.
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Variation in fine root biomass of three European tree species: Beech (Fagus sylvatica L.), Norway spruce (Picea abies L. Karst.), and Scots pine (Pinus sylvestris L.)
Leena Finér,Heljä-Sisko Helmisaari,Krista Lõhmus,Hooshang Majdi,Ivano Brunner,Isabella Børja,Toril D. Eldhuset,Douglas L. Godbold,Tine Grebenc,Bohdan Konôpka,Hojka Kraigher,M.-R. Möttönen,Mizue Ohashi,Jacek Oleksyn,Ivika Ostonen,Veiko Uri,Elena Vanguelova +16 more
TL;DR: The results showed that there exists a strong relationship between the fine root biomass and the above-ground biomass, and that the root biomass of deciduous trees is higher than that of conifers.
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Fine-root turnover rates of European forests revisited: an analysis of data from sequential coring and ingrowth cores
Ivano Brunner,Mark R. Bakker,Mark R. Bakker,Robert G. Björk,Yasuhiro Hirano,Martin Lukac,Xavier Aranda,Isabella Børja,Toril D. Eldhuset,Heljä-Sisko Helmisaari,Christophe Jourdan,Bohdan Konôpka,Bohdan Konôpka,Begoña López,C. Miguel Pérez,Hans Persson,Ivika Ostonen +16 more
TL;DR: In this paper, root turnover rates of common European forest tree species and to compare them with most frequently published values were calculated using decision matrix and maximum-minimum formula as suggested in the literature.
Journal ArticleDOI
Ash dieback: pathogen spread and diurnal patterns of ascospore dispersal, with special emphasis on Norway.
TL;DR: In this paper, a spore sampler was installed in a diseased ash stand at As, South-Eastern Norway, and a survey in early summer of the same year revealed that the disease had spread over large parts of the southern and eastern regions of the country.
Journal ArticleDOI
Stand age and fine root biomass, distribution and morphology in a Norway spruce chronosequence in southeast Norway.
TL;DR: It is concluded that fine root biomass, especially in the finest fraction, is strongly dependent on stand age and showed strong seasonal variation, especially the finest root fraction, with consistently and significantly higher values in spring than in fall.
Journal ArticleDOI
Fine roots and ectomycorrhizas as indicators of environmental change
Pavel Cudlín,Barbara Kieliszewska-Rokicka,Maria Rudawska,Tine Grebenc,Odair Alberton,Tarja Lehto,Mark R. Bakker,Isabella Børja,Bohdan Konôpka,Tomasz Leski,Hojka Kraigher,Thomas W. Kuyper +11 more
TL;DR: In this article, the authors evaluated the effects of acidification, nitrogen deposition, increased ozone levels, elevated atmospheric carbon dioxide, and drought on fine roots and ectomycorrhizal (ECM) characteristics.