Informations et ressources scientifiques
sur le développement des zones arides et semi-arides

Accueil du site → Master → Etats Unis → 1979 → The role of microarthropods and nematodes in litter decomposition in a Chihuahuan desert ecosystem

New Mexico State University (1979)

The role of microarthropods and nematodes in litter decomposition in a Chihuahuan desert ecosystem

Santos PFD

Titre : The role of microarthropods and nematodes in litter decomposition in a Chihuahuan desert ecosystem

Auteur : Santos PFD

Université de soutenance : New Mexico State University

Grade : Master of Science (MS) 1979

Résumé
Changes in the decomposer communities were monitored in early stages of decomposition of buried creosotebush litter (leaves and small stems) confined in fiberglass mesh bags. Selected inhibitors (fungicides, an insecticide and nematicide) were used to disrupt the natural equilibria of the bacteria-nematode-mite litter community in order to examine the effects of removal of parts of that community in order to examine the effects of removal of parts of that community on decomposition processes. The role of microarthropods as predators regulating decomposition has not previously been described. The probable effect of microarthropods in late stages of mixed litter decomposition is to control the microbial populations directly (by grazing on fungi and dispersing microorganisms) and indirectly (by preying on microbivorous nematodes).

Mots Clés : decomposition, microarthropods, decomposition, nematodes, fungicide, I insecticide, Chlordane, litter decomposition, microarthropod, litter decomposition, nematicide, nematode,litter decomposition, soil,

Présentation (Jornada bibliography)

Page publiée le 1er mai 2016, mise à jour le 18 décembre 2017