In pre-Columbian times, the Zenu Indians established drainage systems in the wetlands of the Colombian Caribbean that enabled them to exploit this rich ecosystem in a sustained manner. Modern inhabitants of the region are, however, exposed to a regimen of periodic flooding that limits their...

There is a fundamental divergence of opinion between the EU and the US over how food products derived from genetically modified organisms should be labeled. This has less to do with safety, as moves towards the international harmonization of safety standards continue apace, and rather more to do...

Animal feeding operations have come under increased scrutiny as sources of water pollution. Due to the concentration of animals at individual locations and in certain regions, the local environment may not be able to use all of the nutrients contained in the manure. Particularly, problematic are...

Prolonged investigations of past and present use of wetland margins in various lowlands within Latin America have yielded a wealth of detail. It has become necessary to search out regularities in the natural environmental context and the human adaptations, all of which can be done advantageously...

Globalization, international policymanipulations such as the US farm bill, andnational policy responses have received a greatdeal of media coverage in recent times. Theseinternational and national events are having amajor impact on agricultural production inAustralia. There is some suggestion...

Cahokia, the largest pre-European settlement in North America, was situated on the Middle Mississippi River floodplain and flourished for approximately three hundred years from the 10th century AD onward. The site was favorably located from an environmental standpoint, being proximal to a...

In the absence of access to formal credit, informal contracts with independent investors give the small ranchers of the Lower Amazon an acceptable means through which to surmount the high investment hurdle of starting a cattle herd. These contracts – called sociedades – allow small ranchers...

We report core stratigraphy and chronology that explains the diachronic history of the surface in a prehispanic wetland agricultural complex of planting platforms and canals at Mandinga, central Veracruz, Mexico. Using recognizable stratigraphic horizons, elevations of prehistoric surfaces were...