BIOB50H3 : Lecture 24 textbook and lecture notes.docx
1 Feb 2014
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How: first, pine savanna depends on fire for its persistence, so the fires that result from explosions benefit rather than harm the ecosystem, second, the designation of large blocks of forest land for military use has kept them from being converted to farmland, forest plantations, and residential uses, while some longleaf pine savanna has been preserved at fort bragg and other military bases, overall, this ecosystem has been reduced only. 3% of the more than 35 million hectares it once covered: figure 22. 2: decline of the longleaf pine savanna ecosystem: (a) the estimated area covered by longleaf pine savanna at different times. (b) as seen in this photo from the southeastern us, longleaf pine savanna consist of open forest with a grass understory, various factors contributed to the decline, including rapid growth of the human population, the clearing of land for large populations where other tree species, such as loblolly pine, are grown, and fire suppression.
