Book of Abstracts (PDF) - International Mycological Association

IMC7 Main Congress Theme I: BIODIVERSITY AND CONSERVATION Posters
508 - Above and below ground community of
ectomycorrhizal fungi on beech from four small gaps in
mature natural and managed beech forests
T. Grebenc 1* , M. Christensen 2 & H. Kraigher 1
1
Slovenian Forestry Institute, SI-1000 Ljubljana, Vecna pot
2, Slovenia. -
2
KVL, Unit of Forestry, DK-1958,
Rolighedsvej 23, Denmark. - E-mail:
tine.grebenc@gozdis.si
The mycelium of ectomycorrrhizal (ECM) fungi represents
a crucial link between forest ground vegetation and biotic
and abiotic sources of nutrients. Mapping of fruitbodies has
been shown as unadequate for studies of the distribution of
the fungal community. We have applied a combined
method of mapping of fruitbodies, identification of their
PCR-ITS-RFLP patterns and identification of types of
ECM after anatomical characteristics. The abundance of
types of ECM have been studied in four natural or manmade
canopy gaps in beech forest, two in Denmark and
two in Slovenia. The fruitbodies were mapped and
collected in two growing seasons on the comparable
research plots and the ECM root tips were analysed twice
in a transect line through each of the plots. In soil samples
(V=274 ml) all roots were cleaned, nonmycorrhizal, old
mycorrhizal root tips and morphotypes were separated and
counted. On each plot from 14 to 33 different species of
ECM fungi were determined. In the soil samples from all
four plots 37 different types of ECM were separated, from
these 31 on beech. 21 of them have been determined to the
species level. Only ca one half of the ECM species
determined from mycorrhizal root tips corresponded to the
fruitbodies from the same plot. Some of the fruitbodies
were not yet found in ECM. For identification of unknown
ECM root tips the PCR-ITS-RFLP patterns have been
compared with the database of RFLP patterns, while
sequencing of the ITS region in rDNA has also been
started.
509 - Biodiversity patterns: kinds of rarity of the
corticioid fungi (Basidiomycetes) in Tierra del Fuego
(Argentina)
A.G. Greslebin
Centro de Investigación y Extensión Forestal Andino
Patagónico, CC 14, 9200, Esquel, Chubut, Argentina. - Email:
alina@ciefap.cyt.edu.ar
Usually fungi do not appear in the lists of endangered
species. This is probably due to our limited knowledge of
some ecological features of the species such as the
vulnerability. The form of rarity, based on the geographic
distribution, local abundance and habitat specificity, helps
us identify the species that should be protected and the way
this protection should be carried out in a certain area.
During a floristic study of Corticiaceae s.l. of Tierra del
Fuego the kind of rarity of the species was evaluated. Six
extensive collecting were made along 3 years, visiting 18
localities selected in 5 areas. The kind of rarity of each
species was estimated based on: 1. Frequency measured as
the number of collecting where the species was recorded. 2.
Geographic distribution range in Tierra del Fuego
measured as the number of localities visited where the
species was recorded. 3. Substrate specificity measured as
the number of woody substrates where the species was
recorded. A total of 104 were distributed in kinds of rarity
as follows: Common (class 0): 15 sp.; slightly rare (classes
1-2): 26 sp.; rare (classes 3-4): 8 sp.; highly rare (classes 5-
7): 55 sp. Of 26 endemic species of the area 13 were highly
rare, 10 were slightly rare and 3 were common. Of 4
species with an austral distribution 3 are extremely rare and
1 slightly rare. This estimation of rarity considers the
situation of the species only in Tierra del Fuego and did not
aim to be generalized for other areas.
510 - A comparative account of poisonous mushroom
biodiversity of Turkey and northeast North America
F. Gucin 1 & B.A. Bunyard 2*
1 Fatih University, Biology Dept., Buyukcekmece, 34900
Istanbul, Turkey. - 2 Ursuline College, Biology Dept., 2550
Lander Road, Pepper Pike, OH 44124, U.S.A. - E-mail:
bbunyard@ursuline.edu
Mushroom poisonings are reported every year in Turkey.
The primary reason for this is that local persons may be
unfamiliar with poisonous mushrooms and are unable to
distinguish between edible and poisonous mushroom
species. Ninety two taxa of poisonous mushrooms occur in
Turkey. These are listed here together with their locations
as well as poisoning syndromes such as: Phalloides
syndrome (ten species, one variety), Muscarine syndrome
(nine species), Pantherina syndrome (three species),
Gyromitra syndrome (seven species), Coprinus syndrome
(one species), Psilocybin syndrome (four species), Paxillus
syndrome (two species), Gastrointestinal syndrome (32
species). Furthermore, there are cases of mushrooms that
may be poisonous if consumed raw (15 species) and
mushrooms with suspected constituents (five species), as
well as those reported to be poisonous if consumed with
alcoholic drinks (three species). Similar poisoning
accidents have been reported from Northeastern parts of
North America, but are less common. This study
demonstrates a comparison of these findings.
511 - Saprotrophic mycelium mats in the southern rain
forest of Mexico: effects on fine roots and soil
arthropod diversity
R. Guevara * & I. Romero
Instituto de Ecología, A. C. Departamento de biología de
Suelos, AP 63 CP 91000 Xalapa, Ver., Mexico. - E-mail:
roger@ecologia.edu.mx
Book of Abstracts 155