Ecorestoration of Banni Grassland - Global Restoration Network

S. No Species
5.4 SPECIES DOMINANCE
The species, which exert major controlling influence
on the community by virtue of their size, numbers,
production are called dominant. Simpson (1949) has
devised a formula for estimating the Index of
Dominance (C = E (ni / N) 2 ) based on the biomass
value of species, that highlights the importance of
each species in relation to the community as a whole.
5.4.1 Species Dominance at Dhordo
Table 13: Dominance Index of Plant Species at Dhordo
Restoration Site
Unploughed Ploughed
Area
1 Cyperus rotundus 0.004 0.01 0.08 0.05
Sporobolus sp. forms the dominant species in both
ploughed and unploughed areas of the Dhordo
restoration site while at site B and C, Cyperus
rotundus was the dominant. The dominance index
of seven species; Cyperus rotundus, Chloris
barbata, Aeluropus logopoides, Gandhiro,
Echinocloa sp., Cenchrus sp. and Tetrapogan
tenellus was comparatively higher in the ploughed
Ecorestoration of
Banni Grassland
Unprotected Area Prosopis juliflora
2 Chloris barbata 0.006 0.04 0.03 0.04
3 Sporobolus sp. 0.114 0.07 0.02 0.001
4 Setaria sp. 0.006 0.003 0.004 0.02
5 Aeluropus logopoides 0.001 0.002 0.05 0.02
6 Eragrostis sp. 0.008 0.002 0.003 0.02
7 Gandhiro* 0.001 0.0007 0.0004 0.01
8 Echinocloa sp. 0.002 0.0009 0.0003 0
9 Cenchrus sp. 0.009 0.02 0 0.00002
10 Dactyloctenium aegyptium 0.0002 0.0001 0 0.000985
11 Tetrapogan tenellus 0.0002 0.0003 0 0.00013
12 Dichanthium annulatum 0.013 0.005 0.002 0.00001
Unidentified
area than the unploughed area. At site B, Aeluropus
logopoides forms the second dominant and was
followed by Chloris barbata and Sporobolus sp.
At site C, the second dominant species was Chloris
barbata while Sporobolus sp. and Cenchrus sp.
forms the less and least dominant’ species
respectively (Table 13).
5.4.2 Species Dominance at Bhirandiyara
Table 14: Dominance Index of Plant Species at Bhirandiyara
S. No Species Unploughed Ploughed Slope
Broad
In Bhirandiyara, Cyperus haspan forms the
dominant species in all the amendments and
unprotected area except in narrow vertical slopes
where Aeluropus logopoides exerted domination.
Sporobolus sp. was found to be second dominant
in ploughed and broad slopes whereas it was third
dominant in narrow vertical and horizontal slopes
(Table 14). Cenchrus sp. was least dominant in
unploughed and narrow horizontal slopes but,
totally absent in ploughed and unprotected area.
Slope
Vertical
Slope
Horizontal
Outside
1 Cyperus haspan 0.38 0.5 0.49 0.08 0.38 0.97
2 Sporobolus sp. 0.005 0.01 0.008 0.05 0.007 0
3 Aeluropus logopoides 0.038 0.004 0.008 0.14 0.04 0.0001
4 Echinocloa sp. 0.003 0.0005 0.0001 0.002 0.0006 0
5 Cenchrus sp. 0.0006 0 0.003 0.004 0.0004 0
6 Scirpus sp. 0.001 0.007 0.003 0.0002 0.003 1.93E-06
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