Komoditas : KAMBING - Pustaka

high urine-N loss in the composted manure, the proportion of faeces-N
in total N was similar to that of urine-N after storage. The
anaerobically stored manure still contained more urine-N than faeces-
N. It was estimated that 46% of faeces-N was mineralised during the
composting of the manure but a great proportion of the mineralised N
was lost. Less faeces-N (33%) was mineralised during the anaerobic
storage and the relative losses of the mineralised N were lower. The
differently stored manures ended up having the same C:N ratio and
total N concentrations but the anaerobically stored manure had a
significantly greater proportion of inorganic N compared with the
composted manure. Differences in the forms of N may influence the
fertiliser value of the manures after field application
Descriptors:composted ruminant manure: aerobically-stored,
anaerobically- stored, carbon content, feces, fertilizer value, field
application, gaseous emissions, microbial activity, nitrogen content,
nitrogen- 15-cross labeled, nutritional value, straw, urine.
Agronomy (Agriculture); Bioprocess Engineering; Waste Management
(Sanitation). carbon; nitrogen
Organism Descriptors:microorganism (Microorganisms)
Supplemental Descriptors:Microorganisms. Microorganisms
Subject Codes:Agronomy (Agriculture); Bioprocess Engineering; Waste
Management (Sanitation)
ISSN:0960-8524
Year:2000
Journal Title:Bioresource Technology
Copyright:Biological Abstracts Inc. (BIOSIS) All Rights Reserved
Title:Functional responses of the calcareous grassland communities to
agro-ecological factors in the French Pre-Alps
View Article: Canadian Journal of Botany. 78 (8). August, 2000. 1010-
1020
CD Volume:298
Print Article: Pages: 1010-1020
Author(s):Barbaro Luc Corcket Emmanuel Dutoit Thierry Peltier Jean
Paul
Author Affiliation:Unite de Recherche Agricultures et Milieux
Montagnards, Centre d'Etudes du Machinisme Agricole, Du Genie Rural
et Des Eaux et Forets (Cemagref), Grenoble, 38402, Saint-Martind'Heres:
luc.barbaro@grenoble.cemagref.fr
Other Title:Reponses fonctionnelles des communautes de pelouses
calcicoles aux facteurs agro-ecologiques dans les Prealpes francaises
Language:French
Language of Summary:English (EN); French (FR)
Abstract:The identification of functional groups in calcareous
grasslands of southern Vercors (Rhone-Alpes, France) is investigated
through relationships between biological traits of the species and
agro- ecological factors. Community patterns are determined by (i)
the level of edaphic stress (oligotrophy and xericity) and (ii) the
regime and the intensity of agropastoral management (grazing and
mechanical cutting). In such grasslands submitted to regular
disturbance, life traits related to dispersal and regeneration
processes have greater importance for the differentiation of species
than morphological traits, and Grime's adaptative strategies are the
best predictors of species ordination on agro- ecological gradients
(e.g., stress and disturbance). A classification of species in
functional groups based on the same life traits and similar responses
to disturbances is proposed, and its role in defining adequate
conservation management of calcareous grassland by low-intensity
livestock farming is discussed. The functional role of grazing is
emphasized by the relationship between species dominance or rarity
and their levels of consumption and dispersion by sheeps. In