scholarly journals Population status, nesting habitat selection and conservation threats of lesser adjutant stork (Leptoptilos javanicus) in the eastern lowlands of Nepal

2013 ◽  
Vol 1 (1) ◽  
pp. 27-35 ◽  
Author(s):  
Santosh Karki ◽  
Tej Bahadur Thapa
Keyword(s):  
Habitat Selection ◽  
Habitat Preference ◽  
Tree Height ◽  
Cultural Dimensions ◽  
Conservation Education ◽  
Population Status ◽  
Nesting Habitat ◽  
Conservation Implications ◽  
Questionnaire Surveys ◽  
Conservation Threats

Aim This research examines the status of distribution, nesting habitat selection and conservation threats of lesser adjutant storks. Location Eastern Nepal Materials and Methods Direct observation along line transects method was used to determine population status, distribution and nesting habitat preference of storks in different habitats of the study area. Questionnaire surveys to local people drawn randomly were used to study the socio-cultural dimensions of lesser adjutant storks conservation. Key findings There were a total of 98 individuals in pre-breeding and 240 individuals of lesser adjutant stork in post-breeding periods (94 chicks and 146 adults) in the study area. On average, there were 1.29 chicks per nest. Bombax ceiba and Adina cordifolia were found to be the most preferred nesting trees for lesser adjutant storks. Habitat preference of lesser adjutant storks revealed that colonies were more likely to occur in farmlands and swamps. All the nests of lesser adjutant storks were found on trees above 30 m height, the average tree height was 42.5 ± 6.8 m and the average nest height was 34.4 ± 4.3 m. Questionnaire surveys revealed that people were not aware about conservation of lesser adjutant storks. More than 80% of respondents (n=145) opined that forest destruction was the most serious threat to storks followed by human disturbance (79%), poaching (73%), pesticide use (52%), and urbanization/industrialization (43%). Conservation implications Protection of nesting tree species such as Bombax ceiba and Adina cordifolia should be given a high priority for the conservation of storks in the eastern Nepal. Conservation education programs to control excessive pesticides in the rice fields should also be carried out in the region. DOI: http://dx.doi.org/10.3126/cs.v1i1.8581 Conservation Science 2013 1(1), 27-35

scholarly journals Conservation implications of past and present nesting habitat selection of the endangered OspreyPandion haliaetuspopulation of the Canary Islands

Ibis ◽  
2013 ◽  
Vol 155 (4) ◽  
pp. 891-897 ◽  
Author(s):  
Beneharo Rodríguez ◽  
Airam Rodríguez ◽  
Manuel Siverio ◽  
Felipe Siverio
Keyword(s):  
Habitat Selection ◽  
Canary Islands ◽  
Nesting Habitat ◽  
Conservation Implications ◽  
Selection Of

scholarly journals Nesting habitat selection and challenges of conservation of the vulnerable Lesser Adjutant Leptoptilos javanicus (Horsfield, 1821) in the Chitwan National Park, Nepal

2021 ◽  
Vol 29 (1) ◽  
pp. 33-46
Author(s):  
Bishnu Prasad Bhattarai ◽  
Jagan Nath Adhikari ◽  
Manukala Rijal
Keyword(s):  
Habitat Selection ◽  
Human Disturbance ◽  
National Park ◽  
Canopy Cover ◽  
Tree Height ◽  
Nesting Habitat ◽  
Human Settlements ◽  
Shorea Robusta ◽  
Chitwan National Park ◽  
Nesting Place

Abstract The nesting ecology and conservation threats of the Lesser Adjutant (Leptoptilos javanicus) were studied in the Chitwan National Park, Nepal. We located nine nesting colonies during the nesting season. The number of nests was highly positively correlated with tree height, diameter at breast height and canopy cover. The uppermost canopy of the trees was the most preferred nesting place. Storks preferred to nest in compact colonies on large, widely branched trees with thin foliage cover, such as Bombax ceiba, and also nearby the foraging grounds such as wetlands and grasslands. Storks mostly preferred to nest in Bombax ceiba, but if this tree was not available, they nested in other trees, such as Shorea robusta, Ficus racemosa and Terminalia alata. During the breeding season, 180 adults, 76 nests and 88 chicks were recorded, where the highest number of chicks was recorded near the Sauraha area of the Chitwan National Park. Most of the colonies were far from human settlements, which suggest that human disturbance could be the major determinant of nesting habitat selection in this area. The wetlands nearby human settlements are either overexploited in terms of mass collection of the storks` prey species by people or disturbed highly due to presence of a large number of people. These empirical findings suggest that conservation of Lesser Adjutant mainly rely on the protection of mature Bombax ceiba trees and the reduction of human disturbance and of the collection of stork prey animals from foraging areas.

Nesting habitat selection by bitterns Botaurus stellaris in Britain and the implications for wetland management

2005 ◽  
Vol 124 (4) ◽  
pp. 547-553 ◽  
Author(s):  
Gillian Gilbert ◽  
Glen A. Tyler ◽  
Christopher J. Dunn ◽  
Ken W. Smith
Keyword(s):  
Habitat Selection ◽  
Wetland Management ◽  
Nesting Habitat

Patterns and scale of habitat use in two temperate-zone, small mammal faunas

1984 ◽  
Vol 62 (8) ◽  
pp. 1540-1547 ◽  
Author(s):  
Douglas W. Morris
Keyword(s):  
Habitat Selection ◽  
Small Mammals ◽  
Species Distribution ◽  
Small Mammal ◽  
Habitat Preference ◽  
Species Interactions ◽  
Microhabitat Use ◽  
Microhabitat Selection ◽  
Extinction Probabilities ◽  
Mammal Faunas

Small mammals were livetrapped and habitat quantified in replicates of six macrohabitats in Alberta and in temporal replicates of four macrohabitats in Ontario, Canada. Similar patterns emerged in both locations. The relative abundances of small mammals depended upon macrohabitat; within macrohabitats, species differed significantly in microhabitat use. The patterns were dynamic and probably the result of habitat preference instead of species interactions. Macrohabitat differences may in part be outcomes of microhabitat selection, but are unlikely to be completely understood without superimposing colonization and extinction probabilities on habitat selection models. Field biologists must recognize both scales of habitat to interpret patterns of species distribution.

scholarly journals Nesting habitat selection of Mediterranean raptors in managed pinewoods: searching for common patterns to derive conservation recommendations

2013 ◽  
Vol 24 (2) ◽  
pp. 138-151 ◽  
Author(s):  
RAFAEL BARRIENTOS ◽  
BERNARDO ARROYO
Keyword(s):  
Habitat Selection ◽  
Tree Cover ◽  
Nesting Habitat ◽  
Random Factor ◽  
Diameter At Breast Height ◽  
Breast Height ◽  
Heterogeneous Habitats ◽  
Large Trees ◽  
Generalised Linear Mixed Model ◽  
Selection Of

SummaryInvestigating habitat selection is a key step in improving the population conservation of forest species in areas managed for different purposes, from timber harvesting to hunting or recreation. Because economic resources allocated to conservation are limited, studies that assess cost-effective strategies are necessary, especially when concerning non-threatened species. We studied nest-site habitat selection of two raptor communities (totalling 245 nests from the five most common species: Short-Toed Eagle Circaetus gallicus, Goshawk Accipiter gentilis, Sparrowhawk A. nisus, Common Buzzard Buteo buteo and Booted Eagle Aquila pennata) in two pinewoods in central Spain separated by 200 km. Using a Generalised Linear Mixed Model for each species and with locality as a random factor, we obtained five models of habitat selection. We highlighted the common nesting patterns in order to facilitate an integrated management of forestry in relation to raptor nesting habitat selection. The most important variable for all species, with the exception of the Sparrowhawk was the nest-tree diameter at breast height, with raptors preferentially selecting nesting trees of large width. Tall trees and a high amount of tree cover around the nesting tree were also important habitat features for several species. Our results suggest that pinewoods should retain unharvested patches with moderate tree coverage (30–70%) containing not only several large trees (diameter at breast height > 40 cm) but also small ones. At the landscape level, open forests and heterogeneous habitats are preferred. These forest patches should be dispersed throughout the landscape.

scholarly journals Current Population Status and Activity Pattern of Lesser Flamingos (Phoeniconaias minor) and Greater Flamingo (Phoenicopterus roseus) in Abijata-Shalla Lakes National Park (ASLNP), Ethiopia

2014 ◽  
Vol 2014 ◽  
pp. 1-8 ◽  
Author(s):  
Tewodros Kumssa ◽  
Afework Bekele
Keyword(s):  
Population Size ◽  
Activity Pattern ◽  
Habitat Preference ◽  
Time Of Day ◽  
Dry Season ◽  
Population Status ◽  
Wet Season ◽  
Current Population ◽  
Dry Seasons ◽  
Wet And Dry Seasons

A study of the population status, habitat preference, and activity pattern of nonbreeding flamingos was carried out in Lakes Abijata, Shalla, and Chitu, part of the Great Rift Valley, Ethiopia, from 2011 to 2013. The current population status and habitat preference of flamingos in the area are still poorly known. Likewise, data on diurnal and seasonal activity pattern of the species are scarce and this leads to the misunderstanding of how Flamingos use local wetlands throughout the different seasons. Data regarding population size and activity pattern were gathered during the wet and dry seasons. Point-count method was used to estimate the population size. Behaviors were recorded using scan sampling techniques. A total of 53671 individuals representing two species of flamingo were counted during both wet and dry seasons from the three lakes. There were more flamingos during the dry season than the wet season in Lake Abijata contrary to Lakes Shalla and Chitu during the wet season. Lesser flamingos (Phoeniconaias minor) were the most abundant species comprising 95.39%, while Greater Flamingos (Phoenicopterus roseus) accounted for 4.61% of the total population. Lake Abijata is the major stronghold of Lesser Flamingos in the area. There was significant variation in the mean number of both species during the wet and dry season in the different study sites of the lake, respectively. The species were known to use varied habitats within the lakes. The Lesser Flamingo mainly preferred the shoreline and mudflat areas of the lakes. However, Greater Flamingo on several occasions showed preference to offshore area of the lakes. Seasonal average flock sizes were not similar between the species. There was a strong relationship between time allocated to each activity and time of day. Feeding activity varied among daylight hours and was higher in the evening (76.5%) and late morning (74.56%) and least during midday (54%). Some variations in activity breakdown were observed between time blocks and season. Conservation efforts in the park should include the wild flora and fauna not only of the land but also of the aquatic systems. The information in this study will be very useful for the future management of the species in the area.

scholarly journals Lesser Adjutant Leptoptilos javanicus Horsfield, 1821 (Ciconiiformes: Ciconiidae) in the dry lowlands of Sri Lanka: distribution, ecology, and threats

2015 ◽  
Vol 7 (14) ◽  
pp. 8089
Author(s):  
Thilina N. De Silva ◽  
Sumudu Fernando ◽  
Haritha B. De Silva ◽  
Parami Tennakoon
Keyword(s):  
Sri Lanka ◽  
Agricultural Intensification ◽  
Development Projects ◽  
Population Status ◽  
Field Sampling ◽  
Active Nest ◽  
Evergreen Forests ◽  
Habitat Loss And Fragmentation ◽  
Abandoned Nest ◽  
Questionnaire Surveys

<p>The<strong> </strong>Lesser Adjutant <em>Leptoptilos javanicus</em> is a globally threatened species of stork; in Sri Lanka, it is a scarce resident breeder, and the largest bird in the country, yet the population status and ecology of the species is poorly understood.  This study tracks the stork’s spatial distribution and habitat use within the island, along with aspects of its ecology.  Data was collected via field sampling and questionnaire surveys, over a period of five years across the lowlands of the country.  The bird was observed 184 times, with numbers per sighting ranging from 1–17 individuals.  The species’ distribution was restricted to dry lowlands (rainfall &lt;2200mm, elevation &lt;300m).  The bird showed preference for savannah/woody savannahs, dry mixed evergreen forests, permanent wetlands, and croplands, and was prominently found within protected areas.  Lesser Adjutants were generally solitary, except in the driest months of the year (i.e., August–September and March–April), which are probably the two breeding periods of the bird in Sri Lanka.  Except for an abandoned nest, no active nest was found.  Habitat loss and fragmentation, hunting pressure, agricultural intensification, and development projects were identified as potential threats faced by the species, which varied in magnitude across the country.</p><div> </div>

scholarly journals Factors Affecting Peoples' Participation on Vulture Conservation from Kaski district of Nepal

2013 ◽  
Vol 1 (1) ◽  
pp. 19-26
Author(s):  
Shumsher KC ◽  
YP Timilsina
Keyword(s):  
Social Factors ◽  
Young Male ◽  
Conservation Education ◽  
Conservation Science ◽  
Factors Affecting ◽  
Conservation Implications ◽  
Positive Attitudes ◽  
The Social ◽  
Education Status ◽  
Vulture Conservation

Aim This paper explores the social factors affecting local peoples' participation in the vulture conservation. Location Kaski, Nepal. Materials and Methods This study examines attitude of local people towards vulture conservation using a questionnaire survey of 130 households drawn randomly from the two vicinities of the vulture colonies. Key findings The results show that 77.4% of respondents rear an average of 2.97 livestock unit (LSU) per household. More than half of respondents who rear livestock (53.82%) dump livestock carcasses in the open fields. Ethnicity, age, education status, gender, livestock unit and involvement in conservation activities are the most significant predictors for the positive attitudes towards vulture conservation. Those who are young, male, educated, involved in organizations and do not rear livestock are most likely to support vulture conservation. Conservation implications Conservation education is a key for vulture conservation DOI: http://dx.doi.org/10.3126/cs.v1i1.8580 Conservation Science 2013 1(1), 19-26

Sign in / Sign up

Export Citation Format

Share Document