Book of Abstracts (PDF) - International Mycological Association

IMC7 Main Congress Theme I: BIODIVERSITY AND CONSERVATION Posters
elimination of large decaying logs on the forest floor. This
poster describes an investigation of whether small trees,
which could be left as a future decaying log habitat at the
end of the rotation, are likely to follow the same
successional pathways as larger logs, providing the full
range of decay types and hence fungal and invertebrate
biodiversity. The four objectives of the project were, in
regard to Eucalyptus obliqua coarse woody debris (CWD)
in Tasmanian wet sclerophyll forests: 1) To better
understand the ecology of decomposing CWD, in terms of
the associated wood decay fungi and saproxylic insects; 2)
To investigate differences in fungal and insect biodiversity
between small and large diameter logs; 3) To provide a
checklist of the fungal and insect species dependent on
Eucalyptus obliqua CWD in wet sclerophyll forests; 4) To
look for direct associations between decayed wood, wood
decay fungi and saproxylic insects; The ecological
information from this research will contribute to assessing
whether current forest practices are ecologically
sustainable, developing appropriate indicators for
monitoring forest diversity, and proposing prescriptions
that ensure the conservation of these diverse wood
decomposing communities.
613 - Preliminary biodiversity inventory of dictyostelid
slime molds in Taiwan
Z.-Y. Yeh
National Taiwan Normal University, 88, Tingchou Rd.,
Sec. 4, 117, Taipei, Taiwan. - E-mail:
biozyy@scc.ntnu.edu.tw
Dictyostelid cellular slime molds are widely distributed in
the world and there are most numerous and of the greatest
variety in forest soils. Taiwan is an island located in the
subtropics with many high mountains. Due to the vertical
geographical and climatic complexity of this island, plant
vegetation is luxuriant and the fungal biodiversity is
abundant. The dictyostelid taxa were obtained from soils of
various vegetations such as forest, grassland or cultivated
field of Taiwan. Up to date, three genera and seventeen
species have been recorded, namely: Acytostelium
leptosomum Raper, Dictyostelium aureo-stipes Cavender,
Raper et Norberg, D. brefeldianum Hagiwara, D. clavatum
Hagiwara, D. coeruleo-stipes Raper and Fennell, D.
delicatum Hagiwara, D. giganteum Singh, D. lavandulum
Raper and Fennell, D. macrocephalum Hagiwara, Yeh et
Chien, D. minutum Raper, D. monochasioides Hagiwara,
D. polycephalum Raper, D. purpureum Olive, D.
rhizopodium Raper et Fennell, Polysphondylium pallidum
Olive, P. pseudo-candidum Hagiwara and P. violaceum
Brefeld. Currently, D. exiguum Hagiwara was newly
isolated from forest soils in Nantou County of Taiwan. The
species was examined and illustrated in this text.
Concerning ecological distribution and keys for the above
eighteen species were also discussed and provided.
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Book of Abstracts
614 - Preliminary assessment of diversity and
productivity of edible mushrooms in savanna
woodlands of Western Africa
S.N. Yorou 1* , A. De Kesel 2 & B. Sinsin 1
1 Laboratoire d'écologie Appliquée, Faculté des Sciences
Agronomiques, Université d'Abomey Calavi au Bénin., 01
BP 526, Cotonou, Bénin. - 2 National Botanic Garden of
Belgium, Domein van Bouchout, B-1860 Meise, Belgium. -
E-mail: nourou@avu.org
A simplfied method for preliminary assessment of the
diversity and productivity of wild edible mushrooms in
different types of savanna woodlands is presented. The
results of a case study in Bénin (West-Africa) are given.
Thirty edible macromycetes were found in 18 fixed plots
from six Soudano-guinean vegetation types. The
mushroom productions were assessed per species and per
plot, using the number of produced carpophores and fresh
weight (kg/ha). Edible macromycetes from the studied
areas are for 86.6% ectomycorrhizal, mainly belonging to
Lactarius, Russula and Amanita. The total edible
macromycetes fresh weight production varies from 0.2 to
225 kg/ha per season, depending on the forest type. Open
forests, i.e. savanna and woodland savanna, dominated by
Caesalpiniaceae, yield qualitatively and quantitatively
more edible taxa than the denser and rivulet associated
forest types. Lactarius gymnocarpoides is the most
common and abundant edible species in the savannas and
woodland savannas. Specific productions of edible taxa are
affected by host tree compositions reflected in the forest
type. The study illustrates the importance of local
indigenous knowledge, and indicates that the edible
macromycetes from West-African savanna woodlands have
substantial importance as a renewable, non cultivatable,
non timber forest product.
615 - Arbuscular mycorrhizas from the rhizosphere of
Macaranga denticulata and their effects on the host
plant at different levels of fertilizers
S. Youpensuk 1* , B. Rerkasem 2 , B. Dell 3 , S. Lumyong 1 & P.
Lumyong 4
1 Biology Department, Science Faculty, Chiang Mai
University, Chiang Mai 50200, Thailand. - 2 Agronomy
Department, Agriculture Faculty, Chiang Mai University,
Chiang Mai 50200, Thailand. - 3 School of Biological
Sciences and Biotechnology, Murdoch University, Perth,
Australia. - 4 Plant Pathology Department, Agriculture
Faculty, Chiang Mai University, Chiang Mai 50200,
Thailand. - E-mail: scboi027@chiangmai.ac.th
The hill tribe (Karen) farmers in Mae Hong Son province
of northern Thailand believe in beneficial effects of
Macaranga denticulata Müll. Arg. on upland rice yield.
The farmers manage the M. denticulata canopy in fallow
plots of their rotational shifting cultivation in an acid soil
(pH 4.9). Diversity of arbuscular mycorrhizal (AM) fungi