292,157 research outputs found

    A training needs analysis for the New Zealand forestry industry : a thesis presented in partial fulfilment of the requirements for the degree of Master of Science in Psychology at Massey University

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    Forestry work is inherently dangerous, and logging workers are injured and killed at work at a rate considerably higher than other occupations. A training needs analysis was conducted for the New Zealand Forestry Industry to: identify if there were any deficiencies in the currently available training for logging workers; assess the perceived effectiveness of current training methods regarding safety messages; assess the perceived utility of the currently available pre-employment training; and to determine if there are factors other than training that may be contributing to the poor occupational health and safety record of logging workers. Logging workers, logging contractors and forestry trainers from three geographical regions were invited to complete specially developed questionnaires. In total, 396 crew members, 48 contractors and 23 trainers participated. The results found a number of deficiencies in the current training - particularly the lack of training available for machine operators. Safety training was not especially effective in delivering safety messages, indicating that miscommunication between contractors and logging workers occurs regarding safety. Pre-employment training was viewed positively by logging workers, but contractors had problems with the amount of practical experience given and the level of safety awareness of the graduates. The results also indicated that the logging industry has a highly mobile, transient workforce, which may be contributing to the poor occupational health and safety record

    Reconciling timber extraction with biodiversity conservation in tropical forests using reduced-impact logging

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    Over 20% of the world's tropical forests have been selectively logged, and large expanses are allocated for future timber extraction. Reduced-impact logging (RIL) is being promoted as best practice forestry that increases sustainability and lowers CO2 emissions from logging, by reducing collateral damage associated with timber extraction. RIL is also expected to minimize the impacts of selective logging on biodiversity, although this is yet to be thoroughly tested. We undertake the most comprehensive study to date to investigate the biodiversity impacts of RIL across multiple taxonomic groups. We quantified birds, bats and large mammal assemblage structures, using a before-after control-impact (BACI) design across 20 sample sites over a 5-year period. Faunal surveys utilized point counts, mist nets and line transects and yielded >250 species. We examined assemblage responses to logging, as well as partitions of feeding guild and strata (understorey vs. canopy), and then tested for relationships with logging intensity to assess the primary determinants of community composition. Community analysis revealed little effect of RIL on overall assemblages, as structure and composition were similar before and after logging, and between logging and control sites. Variation in bird assemblages was explained by natural rates of change over time, and not logging intensity. However, when partitioned by feeding guild and strata, the frugivorous and canopy bird ensembles changed as a result of RIL, although the latter was also associated with change over time. Bats exhibited variable changes post-logging that were not related to logging, whereas large mammals showed no change at all. Indicator species analysis and correlations with logging intensities revealed that some species exhibited idiosyncratic responses to RIL, whilst abundance change of most others was associated with time. Synthesis and applications. Our study demonstrates the relatively benign effect of reduced-impact logging (RIL) on birds, bats and large mammals in a neotropical forest context, and therefore, we propose that forest managers should improve timber extraction techniques more widely. If RIL is extensively adopted, forestry concessions could represent sizeable and important additions to the global conservation estate – over 4 million km2

    Balloon logging with the inverted skyline

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    There is a gap in aerial logging techniques that has to be filled. The need for a simple, safe, sizeable system has to be developed before aerial logging will become effective and accepted in the logging industry. This paper presents such a system designed on simple principles with realistic cost and ecological benefits

    Improved timber harvest techniques maintain biodiversity in tropical forests

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    Tropical forests are selectively logged at 20 times the rate at which they are cleared, and at least a fifth have already been disturbed in this way. In a recent pan-tropical assessment, Burivalova et al. demonstrate the importance of logging intensity as a driver of biodiversity decline in timber estates. Their analyses reveal that species richness of some taxa could decline by 50% at harvest intensities of 38 m3 ha-1. However, they did not consider the extraction techniques that lead to these intensities. Here, we conduct a complementary meta-analysis of assemblage responses to differing logging practices: conventional logging and reduced-impact logging. We show that biodiversity impacts are markedly less severe in forests that utilise reduced-impact logging, compared to those using conventional methods. While supporting the initial findings of Burivalova et al., we go on to demonstrate that best practice forestry techniques curtail the effects of timber extraction regardless of intensity. Therefore, harvest intensities are not always indicative of actual disturbance levels resulting from logging. Accordingly, forest managers and conservationists should advocate practices that offer reduced collateral damage through best practice extraction methods, such as those used in reduced-impact logging. Large-scale implementation of this approach would lead to improved conservation values in the 4 million km2 of tropical forests that are earmarked for timber extraction
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