1. Selective pressures acting on foraging activities constrain the strength of interaction, hence the stability and energetic availability in food webs. 2. Because such selective pressures are usually measured at the individual level and because most experimental and theoretical works focus on simple settings, linking adaptive foraging with community scale patterns is still a far stretch. 3. So...

This paper argues that analyses of food security highlight fundamental contradictions at the heart of the globalization project. It examines the concept of food security and evaluates how national strategies to promote it have been undermined by economic liberalization since the 1980s. It finds that unless current policies are drastically reformed, traditional patterns of food insecurity will c...

likely, therefore, that allowance for the fixation of organic carbon as both DOC and POC would tend to reduce the ratio of I : PP in oligotrophic versus eutrophic systems. In conclusion, I disagree with Calbet (2001, p. 1828) that ‘‘the relative importance of microand mesozooplankton in the food dynamics of marine ecosystems, as well as the role of mesozooplankton grazing, must be reevaluated.’...

This workshop will discuss research based experiences of the changed conditions that farming systems face within the whole food chain. Therefore it will focus on the environmental, social and economic impacts of different food chains and the challenges and opportunities offered by diverse quality schemes and standard setting organisation at the world level as well as the certification tools imp...

Recent analysis of policy-induced income changes along the agro-food chain in Bulgaria uses an extension of the PSE/CSE methodology. It shows that measures taken by the government with the intention of supporting consumers have led to a substantial negative impact on producers, without having a positive impact on consumers; that throughout the period 1990-1993 farmers have been net losers and r...

Studies were conducted during August and March–April in the Sargasso Sea south of Bermuda to examine rates of bacterial growth and picoplankton consumption by microbial consumers. Bacterial growth rates were estimated from [3H]thymidine (TdR) incorporation rates, while grazing rates were determined using fluorescently labeled prey (FLP). In addition, net bacterial growth rates were calculated f...

Human and animal skeletal remains can provide information about the food chain of inhabitant’s nutrition of archaeologicalsites. The food chain which at it minerals and organic materials transferred from soil to the plants, from plants to theanimals, and from herbivores animals to the carnivores, is the benchmark system in ancient diet. Although Chemicalinteractions between soils, animal and hu...

Agriculture sector plays very crucial role in the economic growth of India. For sustaining its further growth, supply chain of agriculture sector needs to be strengthened. Agriculture sector is facing lot of challenges due to poor infrastructure, unorganised retail market, poor adoption of modern technology and overall inefficient supply chain. There is strong need to develop linkages between f...