If you are experiencing problems downloading PDF or HTML fulltext, our helpdesk recommend clearing your browser cache and trying again. If you need help in clearing your cache, please click here . Still need help? Email help@ingentaconnect.com

Suillus tomentosus tuberculate ectomycorrhizal abundance and distribution in Pinus contorta woody debris

$50.00 plus tax (Refund Policy)

Buy Article:

Abstract:

Tuberculate ectomycorrhizae (TEM) have been observed in decaying coarse woody debris (CWD) and may play a role in the nitrogen economy of forests. This study evaluates the occurrence of Suillus tomentosus (Kauff.) Singer, Snell and Dick TEM within CWD in Pinus contorta Dougl. ex Loud. var. latifolia Engelm. stands and relates their occurrence to CWD and soil characteristics as well as stand age. TEM were more abundant in the basal end of CWD incorporated in the forest floor than in the middle and top portions. Tubercle abundance was positively correlated with moisture and texture of CWD, degree of incorporation of CWD into the forest floor, and the amount of roots within CWD. There were significantly more TEM in CWD in young stands than in old stands and on sites with granitic soils than on sites with basaltic soils. Highly degraded CWD that is well incorporated in the forest floor appears to be an important microhabitat for the formation and occurrence of TEM.

Des ectomycorhizes qui produisent des tubercules (EMT) ont été observées dans les débris ligneux grossiers (DLG) en décomposition et pourraient jouer un rôle dans l'économie de l'azote en forêt. Cette étude évalue la fréquence des EMT de Suillus tomentosus (Kauff.) Singer, Snell and Dick en lien avec Pinus contorta Dougl. ex Loud. var. latifolia Engelm. dans les DLG de peuplements de cette essence et relie leur présence aux caractéristiques des DLG et du sol ainsi qu'à l'âge du peuplement. Les EMT étaient plus abondantes à la base des DLG incorporés dans la couverture morte qu'à l'extrémité ou que dans la portion médiane de ceux-ci. L'abondance des tubercules était positivement corrélée avec l'humidité, la texture et le degré d'incorporation des DLG dans la couverture morte et la quantité de racines dans le bois. Il y avait significativement plus de EMT dans les DLG des jeunes peuplements comparativement aux vieux peuplements ainsi que dans les stations avec un sol granitique comparativement aux stations avec un sol basaltique. Des DLG fortement dégradés et bien incorporés dans la couverture morte semblent former un microhabitat important pour la formation et le développement des EMT.[Traduit par la Rédaction]

Document Type: Research Article

Publication date: February 1, 2006

More about this publication?
  • Published since 1971, this monthly journal features articles, reviews, notes and commentaries on all aspects of forest science, including biometrics and mensuration, conservation, disturbance, ecology, economics, entomology, fire, genetics, management, operations, pathology, physiology, policy, remote sensing, social science, soil, silviculture, wildlife and wood science, contributed by internationally respected scientists. It also publishes special issues dedicated to a topic of current interest.
  • Information for Authors
  • Submit a Paper
  • Subscribe to this Title
  • Terms & Conditions
  • Sample Issue
  • Reprints & Permissions
  • ingentaconnect is not responsible for the content or availability of external websites
Related content

Tools

Favourites

Share Content

Access Key

Free Content
Free content
New Content
New content
Open Access Content
Open access content
Subscribed Content
Subscribed content
Free Trial Content
Free trial content
Cookie Policy
X
Cookie Policy
ingentaconnect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more