Independent effects of tree diversity on aboveground and soil carbon pools after six years of experimental afforestation.

Planting diverse forests has been proposed as a means to increase long-term carbon (C) sequestration while providing many co-benefits. Positive tree diversity-productivity relationships are well established, suggesting more diverse forests will lead to greater aboveground C sequestration. However, the effects of tree diversity on belowground C storage have the potential to either complement or offset aboveground gains, especially during early stages of afforestation when potential exists for large losses in soil C due to soil decomposition.

Resting injured limbs delays recovery: a systematic review.

Objectives: Rest is commonly used as primary treatment, rather than just palliation, for injured limbs. We searched the literature for evidence of benefit or harm from immobilization or mobilization of acute limb injury in adults.

Data Sources: We systematically searched for and retrieved randomized controlled trials (RCTs) of mobilization or rest for treatment of acute limb injuries, in Medline (1966-2002), EMBASE, Web of Science, and the Cochrane library, in all languages.