BIOL 2260 Lecture Notes - Lecture 12: Soil Horizon, Martin Bormann, Bulk Density
17 Nov 2016
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There were technical difficulties it is likely that this lecture is not being recorded. Exemplify two feature of each and how they may change during succession communities: number of species to increase, diversity, competition, diversity in trophic levels/complexity ecosystem: retention of nutrients, soils, changing in functions (primary production and respiration) Ecosystem changes during succession substantial changes in ecosystem structure during succession at glacier bay total soil depth of all major soil horizons show significant increase for pioneer community in addition, organic content, moisture, and. N concentration all increased physical and biological systems are inseparable. During succession nitrogen, moisture and organic matter content increased while phosphorus content, ph, and bulk density decreased. Succession changes key ecosystem processes (namely soils): increases in biomass, increases in primary production, increases in respiration, and nutrient retention. A question about the key changes in either ecosystems of communities will be on the exam.
