Temporal evolution of soil nematode communities in Pinus nigra forests of Navarra, Spain (1)

Abstract:

In this study the number of specimens and taxa belonging to the orders of Araeolaimida, Chromadorida, Rhabditida, Enoplida, Monhysterida, and some Dorylaimida (Mononchida) from Pinus nigra forests of varying age in Navarra (Northern Spain) are studied. The study considered two parameters : the differing geographical and climatic conditions (oceanic and mediterranean)., and the age of the pineforests at the sampling sites. In both climatic areas the number of species, Margalef richness index, Shannon-Weaver diversity index, and maturity index of nematode communities were found to increase with the age of the pineforests. A regression analysis was carried out between pineforest age as independent variable and species number, richness, diversity and maturity index as dependent variable to confirm these results. The same indices were greater in those areas with an oceanic climate than in those with a mediterranean climate with the exception of the maturity index which remained constant. In order to characterise the taxa that were found, nine species categories were defined and compared with those previously established by other authors, thus allowing more precise values to to be assigned to the c-p categories of Bongers. © Gauthier-Villars - ORSTOM.

Año de publicación:

1996

Keywords:

• Population dynamics
• Species categories
• NEMATODES
• DIVERSITY
• Finns nigra
• Community
• Reforestation
• spain

Fuente:

scopus