The conservation efficiency of Protected Areas (PA) is influenced by the health and characteristics of the surrounding landscape matrix. Fragmentation of adjacent lands interrupts ecological flows within PAs and will decrease the ability of species to shift their distribution as climate changes. For five periods across the 21(st) century, we assessed changes to the extent of primary land, secon...

Dangerous Anthropogenic Interference The United Nations Framework Convention on Climate Change (UNFCCC) commits signatory nations (which includes all major nations including the United States) to stabilizing greenhouse gas concentrations at levels short of DAI. To properly define DAI, one must take into account issues that are not only scientific, but, as I have argued elsewhere (2), economic, ...

Global climate is swiftly changing, with poorly known consequences for biodiversity and human well being. In the last 90 years Earth’s mean temperature rose 0.6°C, a rate of increase that has not been seen in 10,000 years. Since the mid-1990s, it has been clear that mean global temperature rose during the twentieth century, but for several more years the cause of the observed warming was much d...

[1] The fourth assessment report of the Intergovernmental Panel on Climate Change (IPCC) includes a comparison of observation-based and modeling-based estimates of the aerosol direct radiative forcing. In this comparison, satellite-based studies suggest a more negative aerosol direct radiative forcing than modeling studies. A previous satellitebased study, part of the IPCC comparison, uses aero...

Unasylva 230, Vol. 59, 2008 The Intergovernmental Panel on Climate Change’s fourth assessment report (IPCC, 2007) estimated that the forest sector contributes 17.4 percent of all greenhouse gases from anthropogenic sources; most of this is due to deforestation and forest degradation. The Stern Review on the economics of climate change (Stern, 2007), furthermore, observed that “curbing deforesta...

The Good Practice Guidance for Land Use, Land-Use Change and Forestry (GPG-LULUCF), published by the Intergovernmental Panel on Climate Change (IPCC), is laid out to assist countries in preparing their greenhouse gas inventories by providing definitions and methodological advice especially for the sector land use, land-use change and forestry. This paper gives a short review of GPG-LULUCF, pres...

Britain, currently chairing the G8 group of countries, has set an agenda for its term that highlights the problems of climate change as a result of emission of greenhouse gases. While there is still some scepticism about climate change, particularly in the US, the British prime minister, Tony Blair, is determined to flag up the issue and some senior scientists have also been outspoken about the...