Nuclear magnetic resonance (NMR) was used to study the metabolism of the rumen bacterial ecosystem. The fermentation of 1-13C-glucose was investigated. This system showed a transient build-up and decay of lactate labelled at the C3 position. The degradation of lactate gave rise to volatile fatty acids. These results agree with in vivo data on diets rich in available carbohydrates.

The main objective of an ecosystem sustainable management is to preserve itscapacity to respond and adapt to current disturbances and/or future changes, and maintain theprovision of environmental goods and services. Two very important properties linked to thisobjective are the ecosystem resilience and resistance to disturbance factors. The objective ofthis paper is to recommend conceptual modif...

There is a consensus that numeracy important for students to develop logical thinking and reasoning strategies in their everyday activities. As result, teachers are encouraged design rich tasks incorporate real-life contexts across non-mathematics curriculum areas. However, it not clear what types of knowledge require such tasks. In this study, the authors used stepwise generalization method de...

Forests are biologically diverse systems, representing some of the richest biological areas on Earth. They offer a variety of habitats for plants, animals and micro-organisms. However, forest biodiversity is increasingly threatened as a result of deforestation, fragmentation, climate change and other stressors. Biodiversity is the variation of life forms within a given ecosystem, biome, or on t...

Forests are biologically diverse systems, representing some of the richest biological areas on Earth. They offer a variety of habitats for plants, animals and micro-organisms. However, forest biodiversity is increasingly threatened as a result of deforestation, fragmentation, climate change and other stressors. Biodiversity is the variation of life forms within a given ecosystem, biome, or on t...

In diverse sectors companies collaborate to offer integrated usercentric services to obtain competitive advantage. However, regarding elderly care, services are typically isolated, and mostly provided by a single provider. Moreover, there is a need to personalize services in respect of the individuality of each senior and making these services evolve according to the lifestyle and necessities o...

Forests are biologically diverse systems, representing some of the richest biological areas on Earth. They offer a variety of habitats for plants, animals and micro-organisms. However, forest biodiversity is increasingly threatened as a result of deforestation, fragmentation, climate change and other stressors. Biodiversity is the variation of life forms within a given ecosystem, biome, or on t...

Evidence from grassland experiments suggests that a plant community's phylogenetic diversity (PD) is a strong predictor of ecosystem processes, even stronger than species richness per se This has, however, never been extended to species-rich forests and host-parasitoid interactions. We used cavity-nesting Hymenoptera and their parasitoids collected in a subtropical forest as a model system to t...

 Designing and implementing agro-ecosystem intervention decisions is a complex undertaking, outcomes are uncertain and risk of project failure and cost overruns are large.  Sub-optimal intervention decisions are resulting from failure to consider uncertainty, omission of important variables that are difficult to measure, and a lack of frameworks for combining diverse types of information.  W...