An analysis of the species that provide a percent of the human food supply
Freight train carrying grain across Washington state. The principal underlying causes include: The rapid expansion of industrial and Green Revolution agriculture.
References FAO. Multiple ecosystem service scan generally be fund in any single forest fragment see Box 2.
Zoom in Original jpeg, k Fig. The loss of fertile topsoil has played a role in the decline of numerous civilizations. For communities living in or around forests, pollination is therefore a crucial ecosystem service Adams, Moreover, relatively few crop varieties are cultivated in monocultures and a limited number of domestic animal breeds, or fish, are reared or few aquatic species cultivated.
List of foods
Distance-from-forest and fragment isolation had unique influences on service provision for each of the ecosystem services measured. Similarly, individual countries can become too dependent on one or a few commodities, with significant fluctuations in GDP, dependent on unpredictable world prices Jamnadass et al. As regards crop diversity, diversity within species is at least as important as diversity between species. The study showed significant effects of distance-from-forest, fragment isolation and fragment size on crop production, insect pest regulation, and decomposition. Furthermore, in the FAO Country Reports nearly all countries confirm genetic erosion is taking place and that it is a serious problem. Throughout the twentieth century the decline has accelerated, along with increased demands from a growing population and greater competition for natural resources. Continue reading More than 9 billion people in less than 40 years. The nutrients provided by these prolific crops helped prevent malnutrition, supporting a widespread increase in population over the 18th century. Beyond synthetic fertilizers, other innovations in food production and distribution helped food supplies keep pace with population growth. For example, currently, the global supply of fruits and vegetables falls, on average, 22 percent short of population need according to nutrition recommendations, while low income countries fall on average 58 percent short of need Siegel et al. Women: users, preservers and managers of agrobiodiversity available at www.
based on 2 review