Fróðskaparrit - 01.07.2004, Side 41

VAL AV LÍVØKI HJÁ ARBUSKULSOPPUM
í FØROYUM SAMMETT VIÐ AÐRASTAÐNI
39
NTILES ofPHOSPHOR NTILES ofTEMPERAT
Fig. 4. Number of AMfungal clones from field grown plants. Each type is grouped into 4 categories. Tlie categories
are done automatically in SPSS and indicate levels of a) extractable soil phosphorus, b) soil temperature. I is the
category with the lowest values, 4 has the highest values., either 4 increasing levels of extractable phosphorus (a) or
4 increasing levels ofthe mean annual temperature (b).
Anova tests: phosphorus *fungal types F = 7,530, df = 3, p < 0.001; temperature *fungal types F = 9.421, df = 3,
p < 0.001; (phosphorus * temperature) *fungal types F = 16.477, df = 6, p < 0.001.
or the habitat. The data presented here do
not indicate any clear host-specific rela-
tionship. Both the samples taken directly
from the field and the lab-grown samples
indicate that there is a larger difference be-
tween the sites with Agrostis capillaris than
between the Faroese samples and samples
from English forests.
Other factors which might influence
fungal distribution are for example avail-
able phosphate and temperature, and in-
deed some of the AM types seems to relate
to the amount of extractable phosphate, for
example type C (Glo3) increases with in-
creasing phosphate (Fig. 4). Other might
respond to temperature, for example type D
and B (Glo9), which are only found at the
warmer plots, while A and BL rnainly are
found at colder plots.
Acknowledgements
A special thank to Karyn Ridgway for all
her effort leading me through all the tricky
steps with PCR, cloning, sequensing and
(T)RLFP. This study was funded by The
Faroese Research Council (Granskingarráð
Føroya).
Referenccs:
Banderis, A., Barter, D.H. and Henderson, K. 1976. The
use of polyacrylamide to replace carbon in the de-
termination of “Olsen’s” extractable phosphate in
soil. Journal ofSoil Science 27: 71-74.
Burt-Smith, G. 1999-2002. Sourhope Field Experiment
Report IV. Available from http://soilbio.nerc.ac.uk/
research_and_reports.htm