Timber and non-timber forest product extraction and management in the tropics: towards compatibility?

Tropical forests have the potential to satisfy multiple demands for goods and services. Yet integrated management approaches across multiple goods remain elusive. Here we consider selective harvesting of timber and non-timber forest product (NTFP) extraction. We analyze the current status of this combination and speculate on prospects and challenges regarding (1) resource inventory, (2) ecology and silviculture, (3) conflict in the use of multipurpose tree species, (4) wildlife conservation and use, (5) tenure, and (6) product certification. Convincing conclusions are hampered by the relative paucity of comprehensive studies and lessons learned on what has worked and what has not in the context of integrated management for timber and NTFPs. Interventions for enhancing the compatibility of timber and NTFP extraction must be scaled in relation to the size of the area being managed, applied timber harvesting intensities, and the dynamics of multiactor, forest partnerships (e.g., between the private sector and local communities). In addition, training and education issues may have to be recrafted with multiple-use management approaches inserted into tropical forestry curricula

Body Composition, Insulin Sensitivity, and Cardiovascular Disease Profile in Healthy Europeans

Objective:To assess whether insulin sensitivity can explain the associations of leg-fat mass (LFM) and trunk-fat mass (TFM) with the cardiovascular disease (CVD) risk profile in healthy European men and women.Methods and Procedures:We studied 142 healthy men and women of a multicenter European study on insulin sensitivity, aged 30-60 years, from the centres in Hoorn, the Netherlands and Rome, Italy. Whole-body dual-energy X-ray absorptiometry (DXA) was used to determine fat and lean soft tissue mass in the trunk and legs. Fasting glucose, insulin, and lipid levels were measured. Insulin sensitivity (M/I-ratio) was measured during a euglycemic- hyperinsulinemic clamp. Associations between fat distribution and CVD risk factors were studied with linear regression analyses with adjustment for other body compartments, and subsequent adjustment for insulin sensitivity.Results:In men, larger LFM was significantly and independently associated with lower triglyceride levels (TGs) and higher high-density lipoprotein (HDL) cholesterol (P < 0.10) and tended to be associated also with lower low-density lipoprotein (LDL) cholesterol, and lower fasting insulin levels. In women, larger LFM was associated with favorable values of all CVD risk factors, although the associations were not statistically significant. In both sexes, larger TFM was independently and significantly associated with unfavorable values of most CVD risk factors, and most associations did not markedly change after adjustment for insulin sensitivity.Discussion:In a relatively young and healthy European population, larger LFM is associated with a lower and TFM with a higher cardiovascular and metabolic risk, which can not be explained by insulin sensitivity

Fluid systems in foreland fold-and-thrust belts : on overview from the Southern Pyrennees

The analysis of three different regions of the South- Pyrenean fold-and-thrust belt reveals that during the Tertiary compression the hydrological system was compartmentalised in time and space. During the early-middle Eocene, when the thrust front affected marine soft-sediments in the Ainsa basin, the thrust fault zones were dominated by formation fluids derived from Eocene marine waters trapped in the underlying Eocene marls, although influences of meteoric waters were also present. During the middle-late Eocene, when the thrust front emplaced marine rocks over continental redbeds in the eastern Catalan basin (L'Escala thrust), the thrust fault zones were dominated by meteoric fluids. These fluids flowed preferentially along these faults, draining laterally the meteoric fluids and acting as barriers hindering their flowing towards more external parts of the belt. During the Oligocene, the most external part of the fold-and-thrust belt in the eastern Catalan basin developed on top of a salt detachment horizon. The thrust front affected continental materials of late Eocene-Oligocene age. At this moment, the thrusts were conduits for meteoric fluids arriving from the surface and also for evolved meteoric fluids migrating over short distance upwards after being in contact with the underlying evaporitic beds. Most of the fractures show a similar sequence of microfractures. Microfractures of stage 1 formed when the sediment was poorly lithified. Microfractures of stage 2 represent the main episode of vein formation which developed when a progressive induration of the host sediment occurred. During microfracture stage 3, formed in an extensional regime, the host sediment was more indurated. The repetition of this sequence of microfractures in different fracture generations of the same outcrop indicates that the sediment induration was restricted to the vicinity of the vein. Away from the veins, the sediment remained poorly lithified during the entire deformation cycle. Calcite cement within the host rock precipitated later than the syn-compressive veins, when the sediment was more indurated. Elemental geochemistry and stable isotopes of the calcite veins indicates that early generation of microfractures is infilled by local fluids (either marine or meteoric), whereas external fluids (meteoric or evolved meteoric) infilled the main compressive stage of microfractures. The hot temperature of these fluids (157°C to 183°C in the Atiart-Arro example) indicates their circulation through deep parts of the thrust belt. The progressive increase of the 87Sr/86Sr ratio through time is due to the progressive uplift, exposure and erosion of the internal Pyrenean Axial Zone