dc.contributor |
Háskóli Íslands |
dc.contributor |
University of Iceland |
dc.contributor.author |
Guðmundsdóttir, Petra Landmark |
dc.contributor.author |
Andrésson, Ólafur |
dc.date.accessioned |
2019-11-19T08:38:18Z |
dc.date.available |
2019-11-19T08:38:18Z |
dc.date.issued |
2019 |
dc.identifier.citation |
Gudmundsdottir, P. L., & Andresson, O. S. (2019) Fungi in liverwort-based biocrust. Icelandic Agricultural Sciences 32(2019) pp. 43-60 |
dc.identifier.issn |
2298-786X |
dc.identifier.uri |
https://hdl.handle.net/20.500.11815/1343 |
dc.description.abstract |
Fungal distribution in a liverwort-based biocrust was examined at different depths (0, 5 and 20 mm) by direct counting using both light and fluorescence microscopy. The DNA-based taxonomic composition of fungi was also determined and differences between depths (above and below 5 mm) were assessed. The fungal biomass was greatest at the surface where large hyphae, sporangia and fungi within plants were more abundant than at 5 mm and 20 mm depth. The texture of the biocrust also differed significantly with depth. Likewise, the analysis of microbial DNA composition revealed a difference between depths, both for the amount of total fungi and of each phylum where the total amount of fungi was highest above 5 mm. Ascomycota fungi were dominant both below 5 mm and near the surface where both their amount and proportion were substantially higher than deeper down. The dark septate Exophiala, Phialocephala and Pseudogymnoascus were the most abundant genera. |
dc.description.abstract |
Sveppir í íslenskri hélumosalífskurn voru skoðaðir í ljóssmásjá og í flúrsmásjá. Munur á dreifingu sveppa var metinn eftir dýpi (0, 5, 20 mm) og flokkunarfræðileg samsetning hópa í lífskurninni var skoðuð ofan við 5 mm og neðan við 5 mm. Munur var á áferð lífskurnar og útbreiðslu sveppa eftir dýpi. Lífmassi sveppa var meiri við yfirborð þar sem breiðir sveppþræðir, gróhirslur og sveppir á og í plöntum voru í meira magni en á 5 mm og 20 mm dýpi. Samsetningin var jafnframt mismunandi eftir dýpi hvað varðar heildarmagn sveppa og magn einstakra fylkinga. Heildarmagn sveppa var meira í sýnum ofan við 5 mm en neðar. Asksveppir voru ríkjandi í öllum sýnum, bæði ofan við 5 mm og neðan við 5 mm en þeir voru í töluvert meira magni og hærra hlutfalli ofan við 5 mm en neðan. Dökkir sveppir af ættkvíslunum Exophiala, Pialocephala og Pseudogymnoascus voru algengastir. |
dc.description.sponsorship |
Rannís: 163336 |
dc.format.extent |
43-60 |
dc.language.iso |
en |
dc.publisher |
Agricultural University of Iceland |
dc.relation.ispartofseries |
Icelandic Agricultural Sciences;32(2019) |
dc.rights |
info:eu-repo/semantics/openAccess |
dc.subject |
Fungi |
dc.subject |
Biocrust |
dc.subject |
Soils |
dc.subject |
Sveppir |
dc.subject |
Jarðvegur |
dc.title |
Fungi in liverwort-based biocrust |
dc.title.alternative |
Sveppir í hélumosalífskurn |
dc.type |
info:eu-repo/semantics/article |
dc.description.version |
Peer Reviewed |
dc.identifier.journal |
Icelandic Agricultural Sciences |
dc.identifier.doi |
10.16886/IAS.2019.05 |
dc.relation.url |
http://ias.is/wp-content/uploads/2019/09/IAS-2019-5-PGudmundsdottir_OAndresson_43-60.pdf |
dc.contributor.department |
Líf- og umhverfisvísindadeild (HÍ) |
dc.contributor.department |
Faculty of Life and Environmental Sciences (UI) |
dc.contributor.school |
Verkfræði- og náttúruvísindasvið (HÍ) |
dc.contributor.school |
School of Engineering and Natural Sciences (UI) |