BIOL208 Lecture Notes - Lecture 36: Biodiversity Hotspot, Keystone Species, Biocon
18 Oct 2017
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Document Summary
Biodiversity and conservation: why protect diversity, the functional value of diversity, strategies to preserve biodiversity. Biodiversity: the variable among living organisms from all sources and the ecological complexes of which they are part; includes diversity within and among species and ecosystems. Biodiversity hotspots: 1. 4% of land base, 44% of known plant species. Potential mechanisms linking biodiversity and ecosystem function (fig 16. 21, 16. 22: complementarity: increased coverage of available niche-space (high biodiversity is good) unintentionally helping each other. Example, cactus fly larvae consuming: facilitation: increased performance with other species (organisms are matter from streams feed more efficiently depending on water flow, mixed, sampling effect increased chance of having a (cid:494)great(cid:495) species (e. g, keystone. Does increased biodiversity cause increased ecosystem function? species) species: synthetic communities of varying diversity, choose species pool, randomly select species per plot, measure biomass over time. Biocon and biodiv: plant diversity and npp (fig 16. 19: an example of complementarity mechanism. Increasing species richness results in a better yield overtime.
