Annales Botanici Fennici 

About: Annales Botanici Fennici is an academic journal published by Finnish Zoological and Botanical Publishing Board. The journal publishes majorly in the area(s): Biology & Population. It has an ISSN identifier of 0003-3847. Over the lifetime, 1372 publications have been published receiving 15117 citations. The journal is also known as: Ann. Bot. Fenn..

Interactions of fungi at late stages of wood decomposition.

Abstract: Species of wood-rotting fungi succeed each other during the decomposition of a tree trunk; details of this succession vary from tree to tree. Besides the general pathways of fungal decomposition, another and stricter kind of succession exists. Over twenty species of fungi, mostly polypores, were found to inhabit such trees which were previously decayed by certain other species. The successor emerges only after the preceding fungus has died, and often fruits on dead basidiocarps of the previous one. Most predecessors occupy large volumes of the trunk. Fomesfomentarius (L.: Fr.) Fr., Fomitopsis pinicola (Sw.: Fr.) P. Karsten, Hymenochaete tabacina (Sowerby: Fr.) Lev., and species of Inonotus P. Karsten and Trichaptum Murr. serve frequently as preceding species. Certain genera of polypores include exceptionally many species that have this kind of successional preference: Antrodiella Ryvarden & Johansen and its close kin Junghuhnia Corda, as well as Skeletocutis Kotl. & Pouzar and related Piloporia Niemelâ. Fungi which intimately depend on other species are especially vulnerable and deserve special attention in nature conservation. In most cases they survive in virgin forests only, and seem to be rare also there. Even a slight decrease in the abundancy of the preceding species may drastically suppress the populations of the successor, or cause their disappearance.

Plant biomass and production in virgin, drained and fertilized sites in a raised bog in southern Finland

Abstract: The total biomass of the virgin site was 1170 g nT2, the proportion of the above-ground biomass being 61 %. Trees and shrubs contributed ca. 40 % of the total biomass, 40 % was contributed by the field layer and the remaining 20 % by the ground layer. The ground layer was very productive, accounting for 35 % of the total annual production (377 g m 2), but the field layer contributed 54 %. After drainage the total biomass decreased by 8 %, due to decrease of the ground layer biomass. The total biomass of the trees and the above-ground biomass of the field layer were slightly greater than in the virgin bog. The total annual production was 56 % of that in the virgin bog, the difference being mainly due to the lower ground layer production. Nine years after application of fertilizer the total biomass was slightly more than twofold (2580 g m 2) and the total annual production a little less than twofold (619 g nT2) that in the virgin bog. The contributions of the vegetation layers had changed; trees and shrubs made up 65 %, the field layer 32 % and the ground layer only 3 % of the total biomass. The corresponding values for the total annual production were 46.51 and 3 %. Although the biomass and annual production of trees and shrubs had increased markedly in the fertilized bog, their distribution between the different parts of the trees had not changed much. The above-ground stems made up 25 % of the total tree biomass in the virgin site and 28 % in the fertilized site. The corresponding figures for the annual production were 15 and 16 %. This, together with the need for regular cleaning of the ditches and reapplication of fertilizer (ditches deteriorating and effect of fertilizer declining) indicates that this kind of ombrotrophic site does not repay attempts at forest amelioration.