304
continuous water supply from Indira Gandhi
Canal. Kaylana Lake is filled with Indira Gandhi
Canal water regularly which has resulted in the
rise in groundwater level in the Jodhpur City
area (Central Ground water Department Reports
2008). The increase in water table helped in
establishing good gardens which attracts thicketloving bird species.
Though the largest water body is Kaylana
Lake in Jodhpur, it has the highest species count
of about 170 species, yet its diversity was found
lower than that of Balsamand Lake in species
composition of both wetland and other surrounding birds because Balsamand Lake is associated
with a well-maintained garden also which
increases the diversity. It is interesting to note
that even the species count of Kaylana Lake is
high, yet the diversity was lower than Balsamand;
this may also be due to the distribution of individual species numbers.
Out of the total records of 278 species belonging to 63 families in and around Jodhpur, about
205 species of 58 families were recorded form 9
wetlands of Jodhpur, out which 111 were wetland
species. When compared with observations of the
previous years, the diversity of wetlands was
found to be increased in the past decade. The
increase in the alpha diversity of the individual
pond might also be due to the shrinking of the
surrounding habitats. Akheraj and Soor Sagar
ponds are examples of such conditions where the
surrounding areas have been encroached.
It is also observed that muddy shallow banks
are more supportive to the wader community;
0
50
100
150
200
250
300
1992
1995
1999
2005
2010
Years
No of Avian species
Fig. 17.3 Graph showing increase in avian diversity of Jodhpur in the recent past
Table 17.4 Beta diversity among the study sites (Sorenson 1948)
Kaylana
Lake
Umed
Sagar
Gudha
tank
Balsamand
Lake
Barli
pond
Khejarli
pond
Soor
Sagar
Umed
Bhawan
pond
Akheraj pond
0.373
0.327
0.37
0.336
0.369
0.305
0.394
0.278
Kaylana
0.338
0.373
0.353
0.405
0.298
0.412
0.267
Umed Sagar
0.339
0.317
0.363
0.36
0.339
0.272
Gudha tank
0.331
0.391
0.34
0.37
0.272
Balsamand Lake
0.336
0.337
0.38
0.298
Barli pond
0.337
0.368
0.26
Khejarli pond
0.349
0.261
Soor Sagar pond
0.287
H. Singh
continuous water supply from Indira Gandhi
Canal. Kaylana Lake is filled with Indira Gandhi
Canal water regularly which has resulted in the
rise in groundwater level in the Jodhpur City
area (Central Ground water Department Reports
2008). The increase in water table helped in
establishing good gardens which attracts thicketloving bird species.
Though the largest water body is Kaylana
Lake in Jodhpur, it has the highest species count
of about 170 species, yet its diversity was found
lower than that of Balsamand Lake in species
composition of both wetland and other surrounding birds because Balsamand Lake is associated
with a well-maintained garden also which
increases the diversity. It is interesting to note
that even the species count of Kaylana Lake is
high, yet the diversity was lower than Balsamand;
this may also be due to the distribution of individual species numbers.
Out of the total records of 278 species belonging to 63 families in and around Jodhpur, about
205 species of 58 families were recorded form 9
wetlands of Jodhpur, out which 111 were wetland
species. When compared with observations of the
previous years, the diversity of wetlands was
found to be increased in the past decade. The
increase in the alpha diversity of the individual
pond might also be due to the shrinking of the
surrounding habitats. Akheraj and Soor Sagar
ponds are examples of such conditions where the
surrounding areas have been encroached.
It is also observed that muddy shallow banks
are more supportive to the wader community;
0
50
100
150
200
250
300
1992
1995
1999
2005
2010
Years
No of Avian species
Fig. 17.3 Graph showing increase in avian diversity of Jodhpur in the recent past
Table 17.4 Beta diversity among the study sites (Sorenson 1948)
Kaylana
Lake
Umed
Sagar
Gudha
tank
Balsamand
Lake
Barli
pond
Khejarli
pond
Soor
Sagar
Umed
Bhawan
pond
Akheraj pond
0.373
0.327
0.37
0.336
0.369
0.305
0.394
0.278
Kaylana
0.338
0.373
0.353
0.405
0.298
0.412
0.267
Umed Sagar
0.339
0.317
0.363
0.36
0.339
0.272
Gudha tank
0.331
0.391
0.34
0.37
0.272
Balsamand Lake
0.336
0.337
0.38
0.298
Barli pond
0.337
0.368
0.26
Khejarli pond
0.349
0.261
Soor Sagar pond
0.287
H. Singh