Record ID No. |
2671 |
Author(s) |
Veerkamp M., Arnolds E., Plate C. , 2010. |
Affiliation |
Pelikaanweg 54, 3985 RZ Werkhoven, Netherlands. |
Title |
Ecological monitoring network. Newsletter 11. Nieuwsbrief paddenstoelenmeetnet - 11. |
Source. Vol.(no):Page |
Coolia. 53(3): 113-134p. |
Categories |
Ectomycorrhiza |
Subjects |
Ecology |
Sub-subjects |
Miscellaneous |
Host |
Blackberry bushes (Rubus fruticosus) |
Organism |
Fungi, EcM |
Country |
The Netherlands, Europe |
Abstracts |
New results are presented on the national project for long term monitoring of selected macrofungi in The Netherlands over the period 1999-2009. In 2009 data were received from 580 permanent plots in forests and roadside-verges with trees on sandy soils, including 32 newly established plots. Two participants give an impression of their experiences. G. Fransen describes increasing difficulties in accessibility of her plot, which has become completely overgrown by tall blackberry bushes (Rubus fruticosus) in a few years, a widespread phenomenon in forests in The Netherlands. M. Boomsluiter counted all fungal species in a plot (1000 m2) at the forest edge along an old loam-pit and found a surprising total of 202 species in ten years, the majority of them being present during one year only. Since 1999 the average index of 107 counted species shows a significant negative trend, which is stronger for plots in coniferous forests than in deciduous forests. The negative trend is demonstrated for ectomycorrhizal fungi as well as wood-inhabiting and litter-inhabiting fungi. Six species show a statistically strong decrease, 19 species a moderately strong decrease and 15 species a moderately strong increase. Special attention is paid to differences in periodicity of various species, using as criteria the average median of all records in all plots and the average median in different years. The results for 22 species are presented in Table 1. In addition an analysis was made of the duration of presence of sporocarps of some species in the plots studied. This period varies considerably among the selected species. All species studied are more or less constant (sporocarps present in 81-100% of the years; presence class 5 in the figures) in only a minority of the plots. In view of data from literature and field experience it is suggested that the lifespan of many mycelia is much shorter than usually assumed.
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