# Fragmentation (Alternative)

(c) 2008 by O.Conrad
(1) interior, if Density = 1.0
(2) undetermined, if Density > 0.6 and Density = Connectivity
(3) perforated, if Density > 0.6 and Density - Connectivity > 0
(4) edge, if Density > 0.6 and Density - Connectivity < 0
(5) transitional, if 0.4 < Density < 0.6
(6) patch, if Density < 0.4
References:
Riitters, K., Wickham, J., O'Neill, R., Jones, B., Smith, E. (2000):
Global-scale patterns of forest fragmentation. Conservation Ecology 4(2): 3
http://www.ecologyandsociety.org/vol4/iss2/art3/

## Parameters

Grid system
Grid system
  Grid system
Classification
Input Grid
Density [Percent]
Output Grid
  Density Index (Pf).
Connectivity [Percent]
Output Grid
  Connectivity Index (Pff).
Fragmentation
Output Grid
  Fragmentation Index
Summary
Output Table
Class Identifier
Integer
Neighborhood
Value range
  Moving window size = 1 + 2 * Neighborhood.
  Minimum: 1.51706374303e-316; Maximum: 1.51700050263e-316
Level Aggregation
Choice
  Available choices: average, multiplicative
Add Border
Boolean
Connectivity Weighting
Floating point
Minimum Density [Percent]
Floating point
  Maximum: 100.0
Minimum Density for Interior Forest [Percent]
Floating point
  if less than 100, it is distinguished between interior and core forest
  Maximum: 100.0
Search Distance Increment
Floating point
Density from Neighbourhood
Boolean