Through litter decomposition enormous amounts of carbon is emitted to the atmosphere. Numerous large-scale decomposition experiments have been conducted focusing on this fundamental soil process in order to understand the controls on the terrestrial carbon transfer to the atmosphere. However, previous studies were mostly based on site-specific litter and methodologies, adding major uncertainty to syntheses, comparisons and meta-analyses across different experiments and sites. In the TeaComposition initiative, the potential litter decomposition is investigated by using standardized substrates (Rooibos and Green tea) for comparison of litter mass loss at 336 sites (ranging from -9 to +26 °C MAT and from 60 to 3113 mm MAP) across different ecosystems. In this study we tested the effect of climate (temperature and moisture), litter type and land-use on early stage decomposition (3 months) across nine biomes. We show that litter quality was the predominant controlling factor in early stage litter decomposition, which explained about 65% of the variability in litter decomposition at a global scale. The effect of climate, on the other hand, was not litter specific and explained <0.5% of the variation for Green tea and 5% for Rooibos tea, and was of significance only under unfavorable decomposition conditions (i.e. xeric versus mesic environments). When the data were aggregated at the biome scale, climate played a significant role on decomposition of both litter types (explaining 64% of the variation for Green tea and 72% for Rooibos tea). No significant effect of land-use on early stage litter decomposition was noted within the temperate biome. Our results indicate that multiple drivers are affecting early stage litter mass loss with litter quality being dominant. In order to be able to quantify the relative importance of the different drivers over time, long-term studies combined with experimental trials are needed.

The aim of this study was to determine the health system costs associated with falls in older adults who had attended an emergency department (ED) in Western Australia. The data relating to the ED presentations and hospital admissions were obtained from population-based hospital administrative records for [2001][2002]. The type of other health services (eg, outpatient, medical, community, ancillary and residential care), the quantity, and their cost were estimated from the literature.In adults aged 65 years and above, there were 18 706 ED presentations and 6222 hospital admissions for fall-related injuries. The estimated cost of falls to the health system was $86.4 million, with more than half of this attributable to hospital inpatient treatment. Assuming the current rate of falls remains constant for each age group and gender, the projected health system costs of falls in older adults will increase to $181 million in 2021 (expressed in 2001-02 Australian dollars).The economic burden to the health services imposed by falls in older adults is substantial, and a long-term strategic approach to falls prevention needs to be adopted. Policy in this area should be targeted at both reducing the current rate of falls through preventing injury in people from high-risk groups and reducing the future rate of falls

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