Difference between
version 13
and
version 12:
Line 73 was replaced by lines 73-79 |
- ***** Clark and Clark paper covers some of this (Bob said he'd dig up the ref) |
+ ***** Bob: Clark and Clark paper covers some of this (Bob said he'd dig up the ref) |
+ **** most of the time, productivity scales well, i.e., it is a linear scaling, e.g., anpp vs. area is a linear relationship. so for exmaple, even though they are smaller plots, you can get g/m^2 measures. Basically, productivity doubles as area doubles... |
+ **** n addition decresases species diversity: plot at lter sites of anpp (above-ground primary productivity) versus relative species density; species density is the number of species observed in a given area |
+ **** two studies, measures at different scales: either you simulate or measure a species area curve, and extrapolate to different areas. |
+ **** N fertilization positivevly effects productivity negatively effects diversity |
+ ***** N fert. interacts with environment; species sorting (dominance composition) negatively effects diversity |
+ **** |
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