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Displaying 796 - 800 of 1605Comparative hazard assessment for protected species in a fire-prone landscape
We conducted a comparative hazard assessment for 325,000ha in a fire-prone area of southwest Oregon, USA. The landscape contains a variety of land ownerships, fire regimes, and management strategies. Our comparative hazard assessment evaluated the effects of two management strategies on crown fire potential and northern spotted owl (Strix occidentalis caurina) conservation: (1) no action, and (2) active manipulation of hazardous fuels.
Land use in the dry subtropics: Vegetation composition and production across contrasting human contexts
Dry subtropical regions, originally hosting xerophytic vegetation, are currently characterized by diverse land cover/use patterns. Using existing biophysical and socio-economic databases, we explored how human contexts influenced land cover, vegetation composition and agricultural production in five distant regions. On average, cultivated areas represented a minor proportion (
cumulative impacts of reclamation and dredging on the marine ecology and land-use in the Kingdom of Bahrain
This article assesses the ecological and economic impacts of land reclamation and dredging through consulting recent environmental impact assessment reports. Geographic features of Bahrain during 1963–2008 are produced using Geographical Information System. Extensive but inexpensive shallow coastal areas and tidal flats have been reclaimed particularly from 1997 to 2007 at a high rate of 21km²/year. Formal records show the increase in the original land mass by the year 2008 to be 91km².
Restoration approaches used for degraded peatlands in Ruoergai (Zoige), Tibetan Plateau, China, for sustainable land management
Sedge dominated peatlands do not rehabilitate well after being drained for rangelands and specific approaches are required in order to restore these sites. Restoration by blocking drainage canals aims to recover peatland functions, principally by raising the water table. Field surveys in Ruoergai, China identified the status of peatland degradation and satellite image analysis concluded that most of Ruoergai's peatlands are degraded mainly due to drainage and overgrazing.
Legal change, property rights system and institutional stability: The case of the floating raft culture in the Galician mussel sector
Galicia is a Spanish region which has been one of the leading producers of mussels around the world for decades. The institutional framework of the Galician floating raft culture in the mussel sector set up a scenario of institutional stability and equilibrium, in which new licenses were not granted and a winning coalition maintained the “status quo” from 1976 until 2008. Nevertheless, the two most important legal changes since the 90s took place in Galicia as of December 2008: the Fisheries Act 11/2008 and Act 6/2009 amending the former.