Population Status and Habitat Association of the Ethiopian Wolf in the Simien Mountains National Park, Ethiopia

2014 ◽  
Vol 14 (5) ◽  
pp. 355-360
Author(s):  
Mesele Yihune ◽  
Afework Bekele
Keyword(s):  
National Park ◽  
Habitat Association ◽  
Population Status

scholarly journals Population Status and Habitat Association of Swayne’s Hartebeest (Alcelaphus Buselaphus Swaynei (Sclater, 1892)) in Maze National Park, Southern Ethiopia

2021 ◽  
Author(s):  
Abraham Tolcha ◽  
Simon Shibru ◽  
Belayneh Ayechew
Keyword(s):  
National Park ◽  
Southern Ethiopia ◽  
Line Transect ◽  
Habitat Association ◽  
Adult Males ◽  
Population Status ◽  
Female Ratio ◽  
Adult Females ◽  
Dry Seasons ◽  
Wet And Dry Seasons

We investigated the population status and habitat association of the endemic Swayne’s Hartebeest (Alcelaphus buselaphus swaynei (Sclater, 1892)) in the Maze National Park, Southern Ethiopia, in 2018 and 2019. Sample count method line-transect was used for the population estimation, while habitat association was made based on the abundance of individuals counted in each habitat. Data were analyzed using descriptive statistics and comparisons with χ2 test. The total estimated populations of Swayne’s Hartebeest (SHB) in the study period were 1456 and 1492 during wet and dry seasons, respectively showing no seasonal variation. Among the total estimated population, 31% were adult males, 38.46% adult females, 13.97% sub adult males, 15.94% sub adult females and 1.07% young. The number of adult females was higher than the other age groups followed by adult males in both seasons. Significant differences were reported  among age and sex structure of population size during both seasons (wet season: χ2= 58.423, df =3, P < 0.05; dry season: χ2=534.079, df= 4, P < 0.05). The maximum group size was 36 and the minimum was 1. The ratio of adult males to adult females was 1:1.24 and 1:1.24, sub-adult males to sub adult females was 1:1.16 and 1:1.12, adult males to sub-adult males was 1:0.36 and 1:0.56, adult females to sub-adult females was 1:0.33 and 1:0.49 in the wet and dry seasons, respectively. The male to female ratio was 1:1.22 and 1:1.19 during wet and dry seasons as well. The population trend among ten years were significantly differed (χ 2 = 1.708, df= 9, P< 0.05). The SHB was distributed into three types of habitat (riverine forest, open grassland and scattered tree) with significant differences (χ2=1109.937, df = 3, P < 0.05). The savannah grass land was most preferable habitat followed by scattered tree habitat. Maintaining its critical habitat was highly recommended for sustainability of current population status.

Bridled Quail-dove Geotrygon mystacea population assessment after hurricanes Irma and Maria, St. Eustatius, Caribbean Netherlands

2021 ◽  
pp. 1-12
Author(s):  
FRANK F. RIVERA-MILÁN ◽  
HANNAH MADDEN ◽  
KEVIN VERDEL
Keyword(s):  
National Park ◽  
Food Limitation ◽  
Distance Sampling ◽  
Population Status ◽  
Management Actions ◽  
Abundance Estimates ◽  
Detection Mode ◽  
Limited Food ◽  
Seed Eating ◽  
Free Ranging

Summary Structural vegetation damage and food limitation are important effects of major hurricanes, particularly for fruit/seed-eating, forest-dependent Caribbean birds with restricted distributions and small populations, such as the Bridled Quail-dove Geotrygon mystacea. Motivated by the lack of abundance estimates, corrected for detection probability, we conducted distance-sampling surveys inside and outside the Quill National Park each May in 2016-2019. Detection mode was the most important covariate, with others receiving no support from the data. Detectability of available single individuals and clusters of individuals within 60 m of transect centrelines averaged 0.957 ± 0.114 standard error for audio detections, 0.434 ± 0.052 for visual detections, and 0.693 ± 0.064 for detection modes combined. Availability averaged 0.475 ± 0.138 and the product of detectability and availability averaged 0.329 ± 0.098. Density averaged 1.459 ± 0.277 individuals ha-1 and population size averaged 642 ± 122 individuals in 440 ha. Density did not differ along and away from forest trails, but was higher inside than outside the park and at elevations within 201-400 m than 100-200 m and 401-600 m. Density declined by 76% after hurricanes Irma and Maria in 2017. We suggest that major hurricanes together with free-ranging livestock overgrazing degraded foraging habitats, limited food supply, and caused a population bottleneck. Our methodology can be implemented across the distribution range to assess population status and trends and evaluate the result of management actions at key conservation sites. Bridled Quail-dove populations probably were declining on most islands before the 2017 hurricanes and population status warrants revision.

scholarly journals Distribution and Habitat Preference of Hispid Hare (Caprolagus Hispidus) In Shuklaphanta National Park, Nepal

2017 ◽  
Vol 31 (1-2) ◽  
pp. 1-16
Author(s):  
Dhirendra Bahadur Chand ◽  
Laxman Khanal ◽  
Mukesh Kumar Chalise
Keyword(s):  
Population Density ◽  
National Park ◽  
Imperata Cylindrica ◽  
Grass Species ◽  
Population Status ◽  
Tall Grass ◽  
The Past ◽  
Wide Range ◽  
Food Species ◽  
Study Sites

 Hispid hare (Caprolagu shispidus) is an endangered lagomorph which had a wide range of distribution in the past, but currently it is known to occur only from few isolated tall grass pockets of India and Nepal. We explored the population status, habitat utilization and existing threats of the Hispid hare at Shuklaphanta National Park (SNP) by the strip transect and quadrate sampling methods from November 2015 to May 2016 covering both winter and summer seasons. Four study sites of total 1.58ha were selected within SNPand strip transects were randomly laid to determine presence and absence of pellets of Hispid hare and their counts were used to estimate the population density. The Population density of Hispid hare was found to be 0.1820/ha in winter and 0.2268/ha in summer with the statistically significant preference to the tall grassland habitat. Twelve grass species were identified in the habitat of Hispid hare with dominancy of Saccharum spontaneum, Imperata cylindrica, Narenga porphyrocoma, and Saccharum munj. Among the grasses, Imperata cylindrica and Narenga porphyrocoma were the food species of higher preference for Hispid hare.

scholarly journals Status Monitoring and Conservation Issues of Teinopalpus Imperialis Hope (Lepidoptera: Papilionidae), an Endangered Butterfly of Nepal

2015 ◽  
Vol 28 ◽  
pp. 49-56
Author(s):  
Bhaiya Khanal ◽  
Keshab Shrestha ◽  
Madan Krishna Shrestha
Keyword(s):  
National Park ◽  
Mixed Forest ◽  
Extensive Study ◽  
High Impact ◽  
Specific Work ◽  
Population Status ◽  
Target Species ◽  
Status Monitoring ◽  
High Conservation ◽  
Quercus Spp

Teinopalpus imperialis an endangered swallowtail butterfly of high conservation value is encompassed into the Appendix II of CITES (Convention of International Trade of Endangered Species). This butterfly prefers its habitat at the altitudinal range of 2180 - 3000 m and emerges out for a brief period in summer months of May till July first week annually. This target species dwells in the broad leaved evergreen and mixed forest of Oaks (Quercus spp.). This specific work made an extensive study of Teinopalpus imperialis with respect to its population status, associated habitats and prevailing threats in Phulchoki Mountain (Lalitpur District), Nagarjun –Shivapuri National Park (Kathmandu District) and Nagarkot Mountain (Bhaktapur District). This revealed out the occurrence of 21 individual populations of this butterfly in the Phulchoki Mountain and 8 individuals in the Nagarjun forest. Nagarkot of Bhaktapur district did not represent any of this species due to prevailing high impact on its habitat area.J. Nat. Hist. Mus. Vol. 28, 2014: 49-56

scholarly journals Population Status and Distribution of Himalayan Brown Bear (Ursus arctos isabellinus) in Musk Deer National Park Neelum, Azad Jammu and Kashmir (Pakistan)

2018 ◽  
Vol 61 (3) ◽  
pp. 158-164
Author(s):  
Usman Ali ◽  
Naeem Iftikhar ◽  
Nuzhat Shafi ◽  
Khawaja Basharat Ahmad ◽  
Muhammad Siddique Awan ◽  
...  
Keyword(s):  
National Park ◽  
Ursus Arctos ◽  
Brown Bear ◽  
Small Population ◽  
Musk Deer ◽  
Population Status ◽  
Jammu And Kashmir ◽  
Maximum Information ◽  
Potential Habitat ◽  
Extreme North

The Himalayan brown bear (Ursus arctos isabellinus) is considered as .Endangered. in Pakistan. However, a small population of this species still exists in northern Pakistan including Azad Jammu and Kashmir (AJK). A study was conducted to determine population status and distribution of Himalayan brown bear in Musk Deer National Park (MDNP), from April 2011 to September 2012. MDNP, covering an area of 528.16 km2, is situated in the extreme north of AJ&K (upper Neelum Valley) about 155 km away from Muzaffarabad. Study area was divided into three zones (Phulawai, Sardari and Loser) and searched for brown bear signs and evidences. A total of 17 transect surveys were carried out to collect the data on current population status and distribution of Himalayan brown bear in the study area. In addition, questionnaires based surveys were carried out in the area to gather maximum information about this species. Based on direct and indirect signs collected, a total population of about 12 individuals with a population density of 0.42 bear/km2 was estimated in the MDNP with maximum (0.45 bear/km2) in Loser and minimum (0.37 bear/km2) in Phulawai zone. Altitudinal preference was recorded highest (0.46 bear/km2) at the elevation level of >3000 m asl. For the proper management and conservation of Himalayan brown bear, more comprehensive study should be carried out throughout its potential habitat.  

scholarly journals Population status and distribution of Hinde’s Babbler (Turdoides hindei) in Meru national park and Ngaya Forest Reserve areas of Meru county, Kenya

2016 ◽  
Vol 4 (2) ◽  
pp. 295
Author(s):  
Fredrick Onyancha ◽  
George Eshiamwata ◽  
Henry Karanja ◽  
Peter Njoroge
Keyword(s):  
National Park ◽  
Continuous Monitoring ◽  
Agricultural Landscape ◽  
Iucn Red List ◽  
Vegetation Phenology ◽  
Population Status ◽  
Wet Season ◽  
Isolated Populations ◽  
Forest Reserve ◽  
Significant Statistical Difference

Hinde’s Babbler which is listed as Vulnerable in the IUCN Red List with isolated populations confined to some parts of central and eastern Kenya. A survey was conducted between June and December, 2015 to assess and compare population status of Hinde’s Babbler across a gradient of levels of protection. Data was collected at intervals of 100m along predetermined cumulative 19 km transects where playback of Hinde’s Babbler was used to elicit response of individual groups. At each point of detection, total number of adults, offsprings and vegetation phenology was recorded. The entire habitat population was 540 individuals (dry season; Ngaya FR-255, Meru NP-137 and Agricultural landscape- 148), 411 individuals (wet season; Ngaya FR-168, Meru NP-185 and Agricultural landscape- 58) though there was no significant statistical difference between the seasonal datasets. There was significance difference between adults and juveniles in both seasons (Mann Whitney, Dry P= 0.0001 and wet season, P = 0.0002). These results imply that the three sites are vital for the survival, conservation and management of this threatened species and hence continuous monitoring of protected and unprotected sites is necessary for conservation of threatened avian species like Hinde’s Babbler.

scholarly journals A Distributional and Habitat Study of the Bighorn Sheep in Winter, Grand Teton National Park

1978 ◽  
Vol 2 ◽  
pp. 53-56
Author(s):  
Michael Whitfield ◽  
Barry Keller
Keyword(s):  
National Park ◽  
Field Studies ◽  
Bighorn Sheep ◽  
Ovis Canadensis ◽  
Population Status ◽  
Grand Teton National Park ◽  
Habitat Factors ◽  
History Of ◽  
Teton Range

This study was initiated in order to determine the population status of bighorn sheep (Ovis canadensis) in the Teton Range. Intensive field studies were initiated in the summer of 1978 and will be continued during the winter of 1978-79 in order to delineate the distribution of sheep and to relate this distribution to habitat factors which affect seasonal distributions. Additionally, information on the history of bighorn sheep has been sought through interviews of longtime residents of the several valleys surrounding the Teton Range.

scholarly journals Population status of the tree Sacoglottis holdridgei (Humiriaceae) at Isla del Coco National Park, Costa Rica

2016 ◽  
Vol 64 (1) ◽  
pp. 263
Author(s):  
Luis Guillermo Acosta-Vargas
Keyword(s):  
National Park ◽  
Basal Area ◽  
Forest Monitoring ◽  
Diameter Distribution ◽  
Population Status ◽  
Importance Value Index ◽  
Importance Value ◽  
Data Points ◽  
Using Data ◽  
Annual Mortality

<p>Isla del Coco is the only oceanic island in the Eastern Pacific with humid tropical climate. Its forests have a particular structure with a unique array of plant species and high endemism. There are few studies on the flora or forest monitoring on the island.  The population structure of <em>Sacoglottis holdridgei</em> was analyzed using data from six years with data points taken in 2006 and 2012, including sampling of regeneration in 2012.<em> Sacoglottis holdridgei </em>was the most important tree species, presenting in 2012 the highest Importance Value Index (190.7±21.8), abundance (158.5±40.3 Nha<sup>-1</sup> or 39.5 % of the forest) and basal area (15.6 m<sup>2</sup>ha<sup>-1 </sup>or 72.9 % of the forest). It was present in all three height strata with dominance in the highest. Annual mortality was reported at 3.3 % and recruitment at 1.2 %. The diameter distribution of forest fits the inverted <em>J</em> model, but not for the reported species of which only <em>S. holdridgei</em> tends to adjust for DBH&gt;40 cm. Regeneration fitted the inverted<em> J</em> model with values below those reported for continental forests. Even though it was the dominant species, <em>S. holdridgei </em>showed low regeneration values. This particular condition, give way hypotheses related to the introduction of species, species biology and climate change which could influence the future development of <em>S. holdridgei</em> and forests of Isla del Coco.</p><div> </div>

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