Suomen Käävät [Finnish Polypores]

About this book

Language: Finnish with 1-page English summary and scientific nomenclature

This book introduces poroid aphyllophoroid fungi (bracket fungi or polypores) found in Finland and in neighbouring areas. In all, 289 species are dealt with, of them 264 known to occur in the country.

The Introduction discusses the systematic position of these fungi, different distribution patterns, ways of life and pathology (especially wood decay), ecological aspects (including the predecessor–successor relationship), and reasons for some species being threatened. A standard method is presented for assessing and comparing the conservation values of different forest areas, based on selected wood-inhabiting fungi. Structures and terms of macroscopy and microscopy are explained and illustrated. Each species is fully described, supplemented with hints for identification, a list of host trees and other ecology, outlines of distribution, and Red List status (NT and higher ranks); drawings of spores and other details were prepared for the species.

An updated generic division was adopted with the help of colleagues working with DNA phylogeny. Each genus having two or more species in the area is provided with a key to the species. A key to pileate and effused-reflexed species was compiled on the basis of macroscopically characters, and an all-inclusive key was prepared based on both macroscopy and microscopy. Spore dimensions in the descriptions are based on measurements of several specimens per species, 30 spores measured from each of them, showing a typical range (90%), and extreme values given in parentheses. Almost all the species are illustrated with one or more colour photographs (in all over 560 of them) taken mostly in the field.

Summary in Finnish:
Käävillä ja muilla lahottajasienillä on tärkeä rooli metsäluonnossa. Ne palauttavat puuhun sitoutuneita ravinteita ja energiaa luonnon kiertokulkuun ja lisäävät metsän monimuotoisuutta. Jotkin käävät aiheuttavat vahinkoa talousmetsissä ja puistoissa, mutta useimmat ovat ihmisen kannalta harmittomia. Monet lajit säilyvät vain vanhoissa luonnontilaisissa metsissä, ja ovat siksi uhanalaisia.
- Suomen 264 kääpälajia sanoin ja kuvin – 13 enemmän kuin kirjan 1. painoksessa vuodelta 2016
- Lisänä paljon lähialueilla esiintyviä lajeja, yhteensä 289 lajin kuvaukset
- Mikroskooppipiirrokset
- Indikaattorisienten luettelo metsien suojeluarvon luokitteluun
- Monien äskettäin löytyneiden kääpälajien ensiesittely

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