Human land use, agriculture, pesticides and losses of imperiled species
نویسندگان
چکیده
منابع مشابه
Impact of pesticides use in agriculture: their benefits and hazards
was estimated to be around Rs. 22 billion (USD 0.5 billion), which is about 2% of the total world market. The pattern of pesticide usage in India is different from that for the world in general. As can be seen in Figure 1, in India 76% of the pesticide used is insecticide, as against 44% globally (Mathur, 1999). The use of herbicides and fungicides is correspondingly less heavy. The main use of...
متن کاملHuman impacts, plant invasion, and imperiled plant species in California.
Invasive species are one of the fastest growing conservation problems. These species homogenize the world's flora and fauna, threaten rare and endemic species, and impose large economic costs. Here, we examine the distribution of 834 of the more than 1000 exotic plant taxa that have become established in California, USA. Total species richness increases with net primary productivity; however, t...
متن کاملEnvironment and Health Aspects of Pesticides Use in Indian Agriculture
In the recent past, pesticide related issues have been extensively highlighted in the media including research journals and attracted wider debate and sharp focus among the interested groups in India. Indiscriminate and excessive application of synthetic pesticides damaged not only the environment and agriculture but also have entered into the food chain thereby affecting health and development...
متن کاملReply to Feeley and Rehm: Land-use intensification increases risk of species losses from climate change.
A growing body of evidence challenges the view that species’ ranges are shifting unidirectionally in response to anthropogenic climate change (1). As Feeley and Rehm (2) point out, our resurvey of Chimborazo’s vegetation (3) presents yet another example of the complex dynamics of ongoing range shifts. Although we do find a strong average upslope trend, we also note that several species are lagg...
متن کاملAgriculture, pesticides and the ecosystem
General equilibrium analysis provided economists with a good understanding of intraeconomy interdependence and a mature and powerful methodology of modeling it. When it became evident that economic activities had detrimental effects on ecological systems (ecosystems, for short), environmental economics developed as a branch of externality theory which, however, focuses on environment-economy in...
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ژورنال
عنوان ژورنال: Diversity and Distributions
سال: 2009
ISSN: 1366-9516,1472-4642
DOI: 10.1111/j.1472-4642.2008.00543.x