(Des)ordenamientos territoriales salteños : Una aproximación al contexto previo al Ordenamiento Territorial de Bosques Nativos en la provincia de Salta

En este artículo indagamos en las características productivas de la provincia de Salta en los años previos a la sanción de la Ley Nacional No. 26.331 de "Presupuestos Mínimos de Protección Ambiental de los Bosques Nativos" y de la puesta en marcha del Ordenamiento Territorial de Bosques Nativos. Luego de reseñar las transformaciones en el agro que desde inicios de la década de 1970 tienen lugar en la Argentina, avanzamos en la caracterización del proceso y sus particularidades en el este salteño, en donde en las últimas décadas se ha dado un rápido avance de la frontera agropecuaria por sobre territorios antes marginales para la producción agrícola y ganadera empresarial

(Des)ordenamientos territoriales salteños : Una aproximación al contexto previo al Ordenamiento Territorial de Bosques Nativos en la provincia de Salta

En este artículo indagamos en las características productivas de la provincia de Salta en los años previos a la sanción de la Ley Nacional No. 26.331 de "Presupuestos Mínimos de Protección Ambiental de los Bosques Nativos" y de la puesta en marcha del Ordenamiento Territorial de Bosques Nativos. Luego de reseñar las transformaciones en el agro que desde inicios de la década de 1970 tienen lugar en la Argentina, avanzamos en la caracterización del proceso y sus particularidades en el este salteño, en donde en las últimas décadas se ha dado un rápido avance de la frontera agropecuaria por sobre territorios antes marginales para la producción agrícola y ganadera empresarial

Sedimentology and geochemistry on core Co1204

Lakes Prespa and Ohrid, in the Balkan region, are considered to be amongst the oldest lakes in Europe. Both lakes are hydraulically connected via karst aquifers. From Lake Ohrid, several sediment cores up to 15 m long have been studied over the last few years. Here, we document the first long sediment record from nearby Lake Prespa to clarify the influence of Lake Prespa on Lake Ohrid and the environmental history of the region. Radiocarbon dating and dated tephra layers provide robust age control and indicate that the 10.5 m long sediment record from Lake Prespa reaches back to 48 ka. Glacial sedimentation is characterized by low organic matter content and absence of carbonates in the sediments, which indicate oligotrophic conditions in both lakes. Holocene sedimentation is characterized by particularly high carbonate content in Lake Ohrid and by particularly high organic matter content in Lake Prespa, which indicates a shift towards more mesotrophic conditions in the latter. Long-term environmental change and short-term events, such as related to the Heinrich events during the Pleistocene or the 8.2 ka cooling event during the Holocene, are well recorded in both lakes, but are only evident in certain proxies. The comparison of the sediment cores from both lakes indicates that environmental change affects particularly the trophic state of Lake Prespa due to its lower volume and water depth.

Composition of bottom sediments from the Campeche Bank

A complete section of an unconsolidated sedimentary sequence about 5 m thick was sampled in the western margin of the Campeche Bank with use of gravity cores. The sequence forms a flat sea bottom at depth of 51-53 m and rests on a consolidated basement composed of coral limestones and carbonate sandstones. Initiation of deposition of unconsolidated sediments in this area is related to a sea transgression caused by sea level rise that followed the Würm glaciation stage about 10-11 ky ago. Analysis of grain size and chemical compositions of sediments and study of biogenic carbonate remains made it possible to outline environmental changes in this region during the last 10 ky.

Sediment and stable carbon isotope record of the Helgoland mud area

The Helgoland mud area in the German Bight is one of the very few sediment depocenters in the North Sea. Despite the shallowness of the setting (<30 m water depth), its topmost sediments provide a continuous and high-resolution record allowing the reconstruction of regional paleoenvironmental conditions for the time since ~400 a.d. The record reveals a marked shift in sedimentation around 1250 a.d., when average sedimentation rates drop from >13 to ~1.6 mm/year. Among a number of major environmental changes in this region during the Middle Ages, the disintegration of the island of Helgoland appears to be the most likely factor which caused the very high sedimentation rates prior to 1250 a.d. According to historical maps, Helgoland used to be substantially bigger at around 800 a.d. than today. After the shift in sedimentation, a continuous and highly resolved paleoenvironmental record reflects natural events, such as regional storm-flood activity, as well as human impacts at work at local to global scales, on sedimentation in the Helgoland mud area.

TTIP and Climate Change – How real are Race to the Bottom Concerns?

This paper examines concerns about the impact that TTIP could have on existing and future climate policies and laws from the inclusion of provisions on investment protection including investor-to-State dispute settlement (ISDS), the reduction of non-tariff barriers and the introduction of rules for trade in energy and raw materials. It argues that from an environmental perspective, ISDS should not necessarily be seen as a regime that goes against the defence of the environment or prevention of climate change. Although it might be used to challenge policies of an EU home State that increase levels of environmental protection, it can also be used to contest changes in an EU home State’s environmental policies that would reduce the protection of the environment, if foreign investment is affected. To a large extent, this also holds true for other areas of TTIP negotiations. While the achievement of a balance between rules that promote trade and those that maintain policy space for governments to respond to environmental concerns has to be closely monitored, benefits for climate could be seized from harmonisation of carbon laws at the level of the strictest regulations of two parties, provisions that promote trade in low carbon technologies and renewable energy and bilateral cooperation on climate change.