Conservation of the threatened Sarus Crane Grus antigone (Linnaeus, 1758) around Alwara Lake in KaushambiDistrict, Uttar Pradesh, India
Shri Prakash 1, Shubh Narain 2 & Sunil Kumar 3
1,2,3 Department
of Zoology, Kulbhaskar Ashram Post Graduate College,
Allahabad, Uttar Pradesh 211001, India
1 sriprakasht80@gmail.com (corresponding author), 2 shubhnarainmishra@gmail.com,3 drsunielkumar@gmail.com
Abstract: The present study deals with the
distribution and conservation of the globally threatened SarusCrane Grus antigone in Alwara Lake
of district Kaushambi, Uttar Pradesh, India. It proved to be an important site since
the lake under investigation was totally unexplored from the conservation point
of view. Hence it was aimed at
protecting the habitat of this threatened bird species by suggesting
conservation measures through rural masses and policy makers. Birds were recorded in all the three
transects of the lake surveyed by the authors, however, their relative
abundance varied in each transect. A total of 487 cranes was actually observed,
although more cranes were claimed to exist in this area by the local
people. Cropland habitat harboured
the maximum number of cranes. A
positive correlation was observed between the crane numbers and the area of
agricultural land. The authors
recommend continuous population census of this species and declaration of the
entire lake zone as a conservation area.
Keywords: Alwara Lake,
conservation, distribution, Sarus Crane, wetland,
threatened.
doi: http://dx.doi.org/10.11609/JoTT.o3637.5726-30 | ZooBank:urn:lsid:zoobank.org:pub:47E776FB-8E53-429B-B3E1-577365F62E1E
Editor: HemSagar Baral, Zoological
Society of London Nepal Office, Kathmandu, Nepal. Date
of publication: 26 May 2014 (online & print)
Manuscript details: Ms #
o3637 | Received 24 May 2013 | Final received 10 April 2014 | Finally accepted
04 May 2014
Citation: Prakash, S., S. Narain & S.
Kumar (2014).Conservation of the threatened Sarus Crane Grus antigone (Linnaeus, 1758) around AlwaraLake in Kaushambi District, Uttar Pradesh, India. Journal
of Threatened Taxa 6(5): 5726–5730; http://dx.doi.org/10.11609/JoTT.o3637.5726-30
Copyright: © Prakash et al. 2014. Creative Commons Attribution 4.0 International License. JoTT allows unrestricted use of this article in any medium,
reproduction and distribution by providing adequate credit to the authors and
the source of publication.
Funding: None.
Competing Interest: The
authors declare no competing interests.
Acknowledgements: Authors are
highly grateful to the Management and Principal K.A.P.G. College, Allahabad for
providing necessary laboratory facilities in the department. Thanks are also to
the administration district Kaushambi, Uttar Pradesh
for help during the survey programme.
For figures, images, tables -- click here
Sarus Crane Grus antigone is the state bird of Uttar Pradesh. Because of its declining numbers the species has been listed as globally
threatened (Vulnerable) (BirdLife International
2012). It belongs to the order Gruiformes and family Gruidae. The highest population density of Sarus Crane is inseparably associated with wetland
habitats. Several investigators have tried to study different aspects of Sarus Crane (Meine & Archibald
1996; Sundar 2000, 2006, 2011; et al. 2003, 2010,
2012; Borad et al. 2004; Mukherjee et al. 2002; Muralidharan 2004; Kaur & Choudhary 2008; Aryal et al.
2009; IUCN 2012; Clements et al. 2013). About 30% of the global population of this species is dependent on these
wetlands. In addition an indulgent
local population has insured the well being of the SarusCrane. Excessive use of water for irrigation which converts agricultural lands to saline soil
and indirectly builds pressure on wetlands for the fulfilment of community
requirements, is a potential threat.
District Kaushambi of Uttar Pradesh comprises
a vast range of flora and fauna and wetlands including AlwaraLake due to heavy rainfall and floodwaters from the rivers Yamuna and
Ganga. Till now this lake was
totally unexplored from the conservation point of view. If ecological
importance is integrated with hydrological properties
and community benefits of wetlands, it would be easier to convince the local
population for the need for conservation of threatened species such as the Sarus Crane. Considering the above facts, we undertook these studies by suggesting
measures to protect its habitat through continuous population census with the
help of local masses, farmers and policy makers, i.e., Government of India and Governtment of Uttar Pradesh.
Study area
The study area was divided into three major transects based on its
vastness, diversity and habitat of Sarus Crane as
indicated in the map of the area (Image 1). They are: (i) Paur Kashi Rampur, (ii) Tikara, (iii) Shahpur.
The lake is surrounded by agricultural fields and connected to the river
Yamuna towards transect III and terminal part of Kishanpurlift canal towards transect I. Thus
the habitat in the form of wetland is perennial, although during summer the
water level falls. During the rainy
season the water depth rises to about 20m and during summer (dry periods) the
depth comes down to about 15m. The
lake has derived its name from village Alwara. Locally it is called Alwara Taal. Alwara Lake is a naturally formed lake and covers about
40ha. The surrounding transects arePaur Kashi Rampur in the
east, Tikara in the north Shahpurin the south and the river Yamuna in the west.
Materials and Methods
We used binoculars (7x35 and 8x40-BEZIF BM-9), camera, motorbike, chappu boat, field stick etc. for survey purposes. The findings are based upon the work
conducted between September 2011 to December 2012.
Surveys were conducted in the morning between 0600–0900 hr and evening 1400–1700 hrduring our routine field trips. All
the observations were made while moving in a chappuboat (Image 2) and walking along the croplands, marshlands, naturalareas. Birds seen and heard were
noted for the particular site. Identification of different species was aided by using standard guides
such as Ali (1941), Wildlife Institute of India (1999) and Aryalet al. (2009). Juvenile, pairs and
flocks were included during population census. Besides actual sightings, inquiries from
local people were also made to ensure the estimate of existing population and
their perceptions about the existence of the crane. Census was avoided during rainy
days. The encounter rate of Sarus Crane population was calculated as the number of
cranes counted over the area surveyed (in m2).
Systat 12 (Wilkinson 1982)
software was used for the statistical analysis of data. The data of cropping pattern and
agricultural land were collected from district Kaushambiheadquarters.
Location and access to AlwaraLake: By
road the lake is 85km away from Allahabad District, 45km from Manjhanpur headquarter of district Kaushambiand 290km from Lucknow, capital of Uttar
Pradesh. Its nearest railway
station is Bharwari at a distance of 50km and nearest
airport Bamrauli. Allahabad is at a distance of 75km. It is situated between 25024’05.84” – 25025’10.63”N & 81011’39.49’’–81012’57.95”E.
Climate: Winter - occurs between the months of
late October to early March, mid December to mid January is the season of
severe cold; spring - mid February to the end of April; summer - approaches in
the month of April and ends in late June, it is marked by high velocity of
winds in the months of May and June; rainy - approximately 350mm rainfall
observed annually from July to October; autumn - it commences in mid October
and ends in late November. Maximum
temperature is 48–50 0C during summer and minimum 1–3 0C
during winter season.
Results
Sarus Crane was recorded in
all the three transects of the lake as shown in Images 3–5. Population comparison was determined as
a single, pair, pair with one juvenile, pair with two
juveniles and flocks comprising adults and juveniles. Their relative
abundance varied in each transect as shown in Fig. 1, Tables 1,2. Transect II harboured the maximum number
of cranes (207), while it was minimum in Transect III (104). A total of 487 cranes were actually
sighted, however more cranes were claimed to exist in this area by the local
people. Crop landvegetation was abundant in Transect II (Image 4), while mainly marshland
habitat was noticed in Transect I (Image 3) with anthropogenic activities. Transect III mainly included littoral
zone of the lake with emergent vegetation which remain
firmly rooted in shore substratum (Image 5).
Seasonal variations in the distribution pattern of the Sarus Crane were also recorded as shown in Tables 1, 2 and
Fig. 1. A higher number of cranes was recorded during winter compared to summer. A positive correlation was observed
between the crane numbers and the area of agricultural land, e.g., paddy field,
sugarcane field, kharif field etc. During the survey upto165 Sarus Cranes were observed along the roadside
transect of the lake. By this time,
the cranes had established their territories and were likely to breed.
Discussion and Conclusions
Wetlands are more valuable economic resources when retained in their
natural or semi-natural state since they support a wide variety of flora and
fauna. AlwaraLake is an old marshy natural wetland situated in the tropical part of
India. From the ecological point of
view the site is very favourable for Sarus Crane Grus antigone distribution.
The highest population of Sarus Crane was
reported in Transect II (207) during the survey probably due to availability of
sufficient food, mainly small molluscs, crustaceans, worms and grains present
in cropland vegetation, e.g., paddy fields and other kharifcrops. Boradet al. (2004) and Sundar et al. (2010) also found
paddy fields favourable for this species. Littoral zone (Transect III) of lake harboured fewer cranes due to the
less favourable habitat. Although
marshland (Transect I) is known as the optimum habitat for the cranes (Nandi
2006) the present investigation showed that Transect I had fewer individuals
(116) as compared to Transect II. This may be due to anthropogenic activities. Moreover, during the dry season (high
temperatures) the number of cranes decreased in the survey area compared to the
wet season since the scarcity of food compels them to move and search for
better feeding zones. While
estimating the population of Sarus Cranes, Mukherji et al. (2002) observed that openness of habitat is
a requirement for the existence of the crane. Further, during population census they
realized that the presence of inundated paddy fields or land under irrigation
were not the only factors determining the distribution of SarusCrane, but the vegetation at the edge of the crop field and the type of crop
grown also affected the availability of the cranes. In our observation also, the openness of
habitat was a major factor for the existence of SarusCrane.
The study of literature indicates that the future of the Indian Sarus Crane is closely tied to the quality of small
wetlands in India that are exposed to heavy human use and suffer from high
rates of sewage inflow, extensive agricultural runoff, high level of pesticide
residues and intensification of agricultural system (Nandi 2006; Aryal et al. 2009; Sundar2012). They have further reported
that the magnitude of decline in Sarus Crane
population is such that it has been categorized as a threatened species. There are proposals to move this species
from Schedule IV to Schedule I of the Wildlife (Protection) Act and take some
special measures for its conservation (Nandi 2006). As such the authors have initiated a
public awareness campaign through farmers to save this species from going
extinct and recommend the declaration of the entire lake zone as a conservation
area through policy makers (Lok Sabhaand Rajya Sabha). There should be protection of wetlands
to provide additional habitat for Sarus Cranes by
controlling sedimentation of the wetlands. Sundar (2006, 2011), Clements et al. (2013) and Gulland (2013) have conducted, detailed studies on this
threatened species and proposed direct reward for the protection of
biodiversity as an effective tool for delivering conservation outcomes in a way
that also delivers developmental benefits to the local people. Sundar (2011)
based on his studies on the conservation potential of an agricultural landscape
in two districts of Uttar Pradesh, where agricultural intensification and
altered rainfall patterns are predicted, further emphasized that in countries
like India, with a high human population, using agricultural areas as
multifunctional systems to produce food for humans and retaining wildlife may
be an efficient conservation strategy for many species. Similar strategies may be adopted in
this area to effectively save the threatened Sarus Crane which is the pride of Uttar Pradesh.
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