FOR201H1 Lecture Notes - Lecture 12: Forest Stewardship Council, Birmingham City Centre, Understory
Document Summary
Lecture 9: tropical forests and global change: from paleo perspectives to. World looked different if look back through time. Broad areas of vegetation 50 million years ago. Used to be bigger land mass in southeast asia. Big areas of tropical forest in more or less the same places. Africa and latin america look more similar. Though panama still has gap and indian ocean is connected to pacific. In the pleistocene were giant areas in north america covered by glaciers. Buffered by being close to oceans and didn"t change as much. = tropical forests have been present on the same site throughout much of the tropics for a long time. Different than what"s happened in temperate areas due to glaciation. New era of anthropogenic global climate change. Climates changing at rate over last 50 years and quite recently that rates have changed that we haven"t seen in most of the paleo record. Sharp changes in atmospheric chemistry and temperature regime.
