Changes between Version 1 and Version 2 of EwEugCyclesAndPathways


Ignore:
Timestamp:
2010-11-23 01:49:33 (9 years ago)
Author:
shermanl
Comment:

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  • EwEugCyclesAndPathways

    v1 v2  
    2020'''Cycles (living)''' 
    2121 
    22 The routine identifies all cycles in the system excluding detritus and displays these, in ascending order, starting with ‘zero order’ cycles (‘cannibalism’). In addition, the total number and the mean length of the cycles will be displayed. 
     22The routine identifies all cycles in the system excluding detritus and displays these, in ascending order, starting with 'zero order' cycles ('cannibalism'). In addition, the total number and the mean length of the cycles will be displayed. 
    2323 
    2424'''Cycles (all)''' 
    2525 
    26 The routine identifies all cycles in the system and displays these, in ascending order, starting with ‘zero order’ cycles (‘cannibalism’). In addition, the total number and the mean length of the cycles will be displayed. 
     26The routine identifies all cycles in the system and displays these, in ascending order, starting with 'zero order' cycles ('cannibalism'). In addition, the total number and the mean length of the cycles will be displayed. 
    2727 
    2828'''Cycling and path length''' 
    2929 
    30 The ‘cycling index’ is the fraction of an ecosystem's throughput that is recycled. This index, developed by Finn (1976), is expressed here as a percentage, and quantifies one of Odum's (1969) 24 properties of system maturity (Christensen 1995). Recent work shows this index to strongly correlate with system maturity, resilience and stability. 
     30The 'cycling index' is the fraction of an ecosystem's throughput that is recycled. This index, developed by Finn (1976), is expressed here as a percentage, and quantifies one of Odum's (1969) 24 properties of system maturity (Christensen 1995). Recent work shows this index to strongly correlate with system maturity, resilience and stability. 
    3131 
    32 In addition to Finn's cycling index, Ecopath includes a slightly modified ‘predatory cycling index’, computed after cycles involving detritus groups have been removed. 
     32In addition to Finn's cycling index, Ecopath includes a slightly modified 'predatory cycling index', computed after cycles involving detritus groups have been removed. 
    3333 
    3434The path length is defined as the average number of groups that an inflow or outflow passes through (Finn 1980). It is calculated as