Developing an online database of descriptions of ectomycorrhizae

Ectomycorrhizae are the mutually beneficial symbioses of fungi and fine roots, and are responsible for the uptake of nutrients that support tree growth. Many species of fungi form ectomycorrhizae with conifers; most are Basidiomycetes or Ascomycetes that form large mushrooms found in forests. It is, therefore, important to investigate how forest management practices affect the health, growth patterns, physiological function, and taxonomic diversity of ectomycorrhizae. Identification of ectomycorrhizae is fundamental to such research. To date, several hundred detailed descriptions of ectomycorrhizae have been published in books, journal articles, and on a compact disk database called DEEMY ( DEtermination of EctoMYcorrhizae ) , but hundreds more are unavailable in researchers� private databases. The Database of Descriptions of Ectomycorrhizae ( DDE ) web site aims to be a comprehensive tool for the identification of ectomycorrhizae by bringing together as many published and unpublished descriptions as possible. A search function, available to all users, has been programmed to act as an electronic synoptic key. The DDE system also allows qualified researchers to add their unpublished descriptions to the database, and to update these descriptions as needed. The DDE database currently contains 338 descriptions; 318 from DEEMY and 20 from A Manual of Concise Descriptions of Ectomycorrhizae ( CDE ) . Entry of descriptions and search profiles is done using a web form with all the characters in the CDE checklist and links to the CDE illustrated glossary.

[1]  Larry Wall,et al.  Programming Perl , 1991 .

[2]  S. Hagerman,et al.  Effects of clear-cut logging on the diversity and persistence of ectomycorrhizae at a subalpine forest , 1999 .

[3]  V. T. Parker,et al.  Ectomycorrhizal fungi associated with Arctostaphylos contribute to Pseudotsuga menziesii establishment , 1999 .

[4]  A. Bull,et al.  Biodiversity as a source of innovation in biotechnology. , 1992, Annual review of microbiology.

[5]  Melanie D. Jones,et al.  Ectomycorrhizal diversity on Betula papyrifera and Pseudotsuga menziesii seedlings grown in the greenhouse or outplanted in single-species and mixed plots in southern British Columbia , 1997 .

[6]  Daniel M. Durall,et al.  Net transfer of carbon between ectomycorrhizal tree species in the field , 1997, Nature.

[7]  J. Lawton,et al.  Empirical Evidence that Declining Species Diversity May Alter the Performance of Terrestrial Ecosystems , 1995 .

[8]  J. A. Trofymow,et al.  Comparison of communities of ectomycorrhizal fungi in old-growth and mature stands of Douglas-fir at two sites on southern Vancouver Island , 1998 .

[9]  C. Elton.  The Ecology of Invasions by Animals and Plants , 1960, Springer US.

[10]  Charles C. Elton,et al.  The Ecology of Invasions by Animals and Plants. , 1959 .

[11]  J. A. Trofymow,et al.  Distribution of ectomycorrhizas in micro-habitats in mature and old-growth stands of Douglas-fir on southeastern Vancouver Island , 1998 .

[12]  G. Rambold,et al.  DEEMY : a DELTA-based system for characterization and DEtermination of EctoMYcorrhizae , 1996 .

[13]  S. Kellert.  3. Social and Perceptual Factors in the Preservation of Animal Species , 1988 .

[14]  M. Carreiro,et al.  Ectomycorrhizal diversity and community structure in oak forest stands exposed to contrasting anthropogenic impacts , 1999 .

[15]  D. A. Perry,et al.  Interaction effects of vegetation type and Pacific madrone soil inocula on survival, growth, and mycorrhiza formation of Douglas-fir , 1989 .

[16]  D. Tilman,et al.  Productivity and sustainability influenced by biodiversity in grassland ecosystems , 1996, Nature.

[17]  Melanie D. Jones,et al.  Shared compatibility of ectomycorrhizae on Pseudotsuga menziesii and Betula papyrifera seedlings grown in mixture in soils from southern British Columbia , 1997 .

[18]  J. Kranabetter,et al.  A comparison of ectomycorrhiza communities from three conifer species planted on forest gap edges , 1999 .

[19]  P. Ehrlich,et al.  The Preservation of Species: The Value of Biological Diversity , 1987 .

[20]  Alan J. Thomson,et al.  Forest tree disease diagnosis over the World Wide Web , 1998 .

[21]  J. Downing,et al.  Biodiversity and stability in grasslands , 1996, Nature.

[22]  R. Agerer.  Descriptions of ectomycorrhizae , 1996 .

[23]  J. Kranabetter,et al.  Ectomycorrhizal community structure across forest openings on naturally regenerated western hemlock seedlings , 1998 .

[24]  I. G. BONNER CLAPPISON.  Editor , 1960, The Electric Power Engineering Handbook - Five Volume Set.

[25]  R. Agerer.  Colour Atlas of Ectomycorrhizae , 1997 .

[26]  V. Mohan,et al.  Identification of Ectomycorrhizas , 2002 .