Elsevier is a world-leading provider of information solutions that enhance the performance of science, health, and technology professionals.
All knowledge begins as uncommon—unrecognized, undervalued, and sometimes unaccepted. But with the right perspective, the uncommon can become the exceptional.
That’s why Elsevier is dedicated to making uncommon knowledge, common—through validation, integration, and connection. Between our carefully-curated information databases, smart social networks, intelligent search tools, and thousands of scholarly books and journals, we have a great responsibility and relentless passion for making information actionable.
Members:
Resources
Displaying 446 - 450 of 1605Pluri-energy analysis of livestock systems – A comparison of dairy systems in different territories
This paper introduces a generic assessment method called pluri-energy analysis. It aims to assess the types of energy used in agricultural systems and their conversion efficiencies. Four types of energy are considered: fossil energy, gross energy contained in the biomass, energy from human and animal labor and solar energy. The method was applied to compare smallholder low-input dairy-production systems, which are common in developing countries, to the high-input systems encountered in OECD countries.
Rangeland management impacts on the properties of clayey soils along grazing gradients in the semi-arid grassland biome of South Africa
The grassland biome of South Africa is a major resource for livestock farming; yet the soils of these rangelands are stressed differently by various management systems. The aim of this study was to investigate how basic soil properties respond to different management systems. For this purpose we sampled rangeland management systems under communal (continuous grazing), commercial (rotational grazing) and land reform (mixture of grazing systems) farming.
productivity of traditional rice–fish co-culture can be increased without increasing nitrogen loss to the environment
Although the traditional rice–fish co-culture system (RF) efficiently uses water and land resources, provides food security, and does not harm the local environment, it requires improvement because of its small scale and low fish yield. We therefore determined whether fish yield in RF can be increased without increasing nitrogen (N) loss into the environment (i.e., the risk of N pollution) by management of N inputs.
Macrophytes in shallow lakes: Relationships with water, sediment and watershed characteristics
We examined macrophyte–environment relationships in shallow lakes located within the Prairie Parkland and Laurentian Mixed Forest provinces of Minnesota. Environmental variables included land cover within lake watersheds, and within-lake, water and sediment characteristics. CCA indicated that sediment fraction smaller than 63μm (f
Curiosity killed the bat: Domestic cats as bat predators
Domestic cats are suspected to have an impact on wild populations of birds and small mammals, but published reports of predation on bats are either rare or anecdotal. We based our study on 1012 records of bats admitted at four wildlife rescue centres in peninsular Italy in 2009–2011.