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PDFBiodiversity conservation attitudes and policy tools for promoting biodiversity in tropical planted forests
Biodiversity loss poses a real threat to the livelihoods, food security and health of the poor. In Vietnam, nearly 700 species are threatened with national extinction and over 300 species are threatened with global extinction. Deforestation is the main contributor to these biodiversity losses. This study examines biodiversity conservation attitudes of foresters and proposes policy options to promote biodiversity in planted forests. A household survey of 291 foresters in Yen Bai Province, Vietnam, was conducted to examine attitudes to biodiversity conservation. A range of forest policy tools was investigated to find the most appropriate one to enhance biodiversity, given the specific social-economic conditions of foresters. A forest-level optimisation model was employed to design the optimal level of payment for biodiversity conservation. The results suggest that a large number of foresters would agree to the idea of enhancing biodiversity in planted forests if they were financially supported. It is concluded that policy options for the Government of Vietnam include refinements to the current payment scheme and considering increasing the payment level to foresters to enhance biodiversity. These findings may have some generalisability to the plantation forestry sector in other developing countries in tropical zones, and implications for implementing the REDD+ mechanism in developing countries.
 
PDFWeeds and endangered herbs have unforeseen dispersal helpers in the agrienvironment: gastropods and earthworms
Agri-environmental schemes involving organic farming or set-aside management aim at promoting biodiversity and
restoring ecosystem functioning in agrarian landscapes. Application of pesticides in these crop fields is strongly regulated
facilitating the spread of weeds but also allowing for the establishment of endangered herbs and a variety of animals.
Recent studies found gastropods and earthworms to be legitimate dispersers of seeds of wild plants. We assumed that
both groups also play a significant role in the spread and establishment of wild plants within crop fields. Therefore, we are
conducting a series of experiments in three different study systems on (1) the role of earthworms and gastropods as
dispersers of rare herbs and weeds in an organic rye field in Germany, (2) the seed feeding behavior of gastropods of
plants sown in fallow ground in Switzerland, and (3) weed dispersal in irrigated rice fields by golden apple snails in the
Philippines.
 
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