GEOG 111 Lecture Notes - Lecture 12: Lythrum Salicaria, Bromus Tectorum, Habitat Fragmentation
Document Summary
Increased biodiversity = increased complexity = increased stability. Population growth of humans threat to biodiversity through things like real estate development, agriculture, resource harvests. Habitat fragmentation, splitting up large habitats into smaller and smaller patches changing not just their size but their fundamental properties but influencing how the species within it can disperse, move within, etc. Dispersal and migration, can be affected by natural barriers as well for instance the grand canyon or mountains, etc. Often caused by human development such as green space" in suburban development areas. Major concern in incredibly dense areas like the amazon rainforest. Invasive species, a species introduced by humans either directly or indirectly. 800 plants in hawaii are invasive, 30% of its ecosystem. Ecological impacts - can out compete native species, alter food bases at a trophic level, change ecosystem processes (fire frequency, nutrient cycling),
