Recent theoretical studies have shown the potential for chaotic dynamics in simple three-species food chains. Most of these studies have focused on linear food chains, although natural food chains are seldom isolated from the surrounding food web. There is a growing awareness that food web dynamics can be strongly influenced by the behavior and movement of predators, energy, and nutrients acros...

A growing number of consumers are concerned with the impacts of consumption choices. Local food supply chains are increasingly being discussed for their potential to overcome the impacts of global and more industrialized chains. However, opposition between local and global food systems is being questioned and distinctions are ambiguous. Can sustainability performance be assessed in relation to ...

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...

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...

Food Value Chain Analysis (FVCA) based on the lean paradigm is being applied to eight value chains in the UK red meat industry. This paper is based on the forth chain involving a value added pork for a major retailer. Systems theory is used to evaluate FVCA based on four sub-systems—goals and values, logistics, human resources and management structure. The results show a positive potential logi...

primary man in trying to find food went everywhere. but by forming ranching arranged a chain of places and became emigrant. by happening industrial revolution, human life was centralized on one place.  places that base on its advantages make different biologic and behavioral types. forming cities in seaboard, river shore, boundary of mountains and champaign cause to make different cultures that...

Recent studies demonstrate that most cyanobacteria produce the neurotoxin beta-N-methylamino-L-alanine (BMAA) and that it can biomagnify in at least one terrestrial food chain. BMAA has been implicated as a significant environmental risk in the development of neurodegenerative diseases such as Alzheimer's disease, Parkinson's disease, and Amyotrophic Lateral Sclerosis (ALS). We examined several...