scholarly journals Wildlife Diversity and Population Status of Kashimpur Union, Gazipur, Bangladesh

2018 ◽  
Vol 44 (2) ◽  
pp. 101-115
Author(s):  
Nazmul Islam ◽  
M Firoj Jaman ◽  
Md Mokhlesur Rahman ◽  
Md Mahabub Alam
Keyword(s):  
Relative Abundance ◽  
Habitat Degradation ◽  
Conservation Status ◽  
Diversity Indices ◽  
The Other ◽  
Population Status ◽  
Agricultural Lands ◽  
Conservation And Management ◽  
Near Threatened

Wildlife diversity (amphibians, reptiles, birds and mammals) of Kashimpur Union in Gazipur Sadar Upazila under Gazipur district was studied from May, 2015 to March, 2016. A total of 110 species of wildlife belonging to 58 families under 19 orders were recorded. Among them, 6 (5.45%) species were amphibians, 14 (12.72%) reptiles, 72 (65.45%) birds and 18 (16.38%) were mammals. Among the amphibians, 5 (83.33%) species were frogs and only one (16.67%) was toad; of reptiles, 7 (50%) species were lizards, 5 (35.71%) snakes and 2 (14.29%) were tortoises. Of the birds, 39 (54.16%) species were passerines and remaining 33 (45.84%) were non-passerines. Resident status shows that 66 (91.62%) species were resident, 5 (7.00%) migrants and 1 (1.38%) species were vagrant. Among the mammals, 8 (44.45%) species were rodents, 4 (22.22%) flying mammals and 6 (33.33%) species were carnivorous mammals. The relative abundance shows that 10 (9.09%) species were very common, 24 (21.81%) common, 31 (28.19%) fairly common and 45 (40.91%) species were few. Considering the conservation status, 5 species were near threatened and 105 were the least concern nationally. According to Shannon-Wiener (H = 3.287) and Simpson's (D = 0.942) diversity indices, diversity of birds was higher than the other wildlife observed. Some potential threats on wildlife diversity were identified such as habitat degradation and fragmentation, expansion of agricultural lands and urbanization. Therefore, conservation and management are necessary in order to protect the diversity of existing wildlife and their population in the study area. Asiat. Soc. Bangladesh, Sci. 44(2): 101-115, December 2018

scholarly journals Status of Nahan’s Partridge Ptilopachus nahani (Dubois, 1905) (Aves: Galliformes: Odontophoridae) in Uganda

2020 ◽  
Vol 12 (15) ◽  
pp. 17063-17076
Author(s):  
Eric Sande ◽  
Sisiria Akoth ◽  
Ubaldo Rutazaana ◽  
William Olupot
Keyword(s):  
National Parks ◽  
Tropical Rainforest ◽  
Conservation Status ◽  
The Other ◽  
Population Status ◽  
Density Estimates ◽  
Point Count ◽  
Forest Reserves ◽  
High Incidence ◽  
Point Count Method

We carried out a survey of Nahan’s Partridge Ptilopachus nahani in the Ugandan forests of Mabira, Bugoma, and Budongo from December 2016 to December 2017, using a point count method employing a call playback technique.  The aim was to establish the population status of this globally threatened species, which was last surveyed in 2003.  Separate analyses of the number of groups per point and those involving use of the Distance Program yielded the same density estimates, indicating that either method reliably estimates the density of the species.  The density estimates for the three reserves were 31.6, 25.2, and 13.3 groups per km2 for Bugoma, Budongo, and Mabira forest reserves, respectively.  In the last 14 years, it appears that the density of the species for Uganda has increased from 16.3 to 23.4 groups per km2, which when extrapolated translates to 16,000 and 23,000 groups, respectively.  This represents a 44% increase in density, or a group growth rate of 450 per year.  The lowest density and population increment was registered in Mabira and we attribute this to the apparently high incidence of disturbance and degradation of this forest compared to the other two.  Since Mabira, Bugoma, and Budongo are the only remaining large tropical rainforest reserves in Uganda, strengthening their conservation or upgrading their conservation status to national parks is required to save the species.

scholarly journals A Genomic Perspective on the Conservation Status of the Endangered Nashville Crayfish (Faxonius shoupi)

2021 ◽  
Author(s):  
Carla Hurt ◽  
Parker Hildreth ◽  
Carl Williams
Keyword(s):  
Genetic Variation ◽  
Habitat Degradation ◽  
Demographic History ◽  
Conservation Status ◽  
Restricted Gene Flow ◽  
Mitochondrial Haplotypes ◽  
Creek Watershed ◽  
Run Off ◽  
History Of ◽  
Conservation And Management

Abstract The Nashville crayfish (Faxonius shoupi) was federally listed as an endangered species in 1986 due to its limited distribution in the Mill Creek watershed; this waterway lies in the rapidly developing Nashville basin and has experienced habitat degradation due to agricultural run-off, contamination, and urban development. Recovery efforts, including dam removal and restoration of riparian zones, have improved conditions in Mill Creek and F. shoupi has increased in numbers and recolonized extirpated stream segments. However, a history of demographic bottlenecks and restricted gene flow may have negatively impacted the long-term recovery of this species. A recently discovered population of F. shoupi in a disjunct segment of the Lower Tennessee River at the Pickwick Tailwater may provide an additional source of genetic variation. Uncertainty surrounding the origins of the Pickwick population and its taxonomic relationship to F. shoupi in Mill Creek raises questions about the conservation and management implications of this population. We used mitochondrial sequencing and SNP genotyping to assess genetic variation and connectivity of F. shoupi in the Mill Creek drainage and to investigate the taxonomy and demographic history of the newly discovered population at Pickwick. We found substantial genetic variation and evidence of connectivity for samples throughout Mill Creek for both mitochondrial and genome-wide SNPs. Our results also suggest a recently severed connection between crayfish in Pickwick and Mill Creek. Unique mitochondrial haplotypes and SNP variation in the Pickwick population highlight the need for prioritizing this population in future conservation and management plans for this species.

scholarly journals Lilium longiflorum var. longiflorum (Liliaceae), a neglected lily of Taiwan

2020 ◽  
Author(s):  
Chien-Ti Chao
Keyword(s):  
Conservation Status ◽  
Lilium Longiflorum ◽  
The Other ◽  
New Information ◽  
Remote Islands ◽  
Near Threatened

Background The genus Lilium comprises ca. 100 species and famous byb its showy flowers. In Taiwan, four taxa were recorded in Flora of Taiwan, namely L. callosum, L. formosanum, L. speciosum var. gloriosoides, and L. longiflorum var. scabrum.  New information In this article, the author reported a newly recorded lily taxon, Lilium longiflorum Thunb. var. longiflorum. This variety is morphologically similar to the other two endemic taxa, L. longiflorum Thunb. var. scabrum Masam. and L. formosanum Wallace of Taiwan, and is often misidentified as such. However, L. longiflorum var. longiflorum is distinguished from them by having subglabrous stems, and tepals without purplish stripes. Lilium longiflorum var. longiflorum has only been found in the remote islands of Taiwan, such as Lanyu, Lutao, and Pengchia Islet. The conservation status of the two varieties of L. longiflorum of Taiwan was re-evaluated and assigned as near threatened (NT).

scholarly journals Diversity of bird communities of the forest in the Boyarska experimental station at the gradient of anthropic load

2020 ◽  
Vol 11 (3) ◽  
Author(s):  
V.A. Gaychenko ◽  
◽  
T.V. Shupova ◽  
Keyword(s):  
Species Composition ◽  
Relative Abundance ◽  
Conservation Status ◽  
Bird Species ◽  
Parus Major ◽  
Diversity Indices ◽  
Bird Communities ◽  
Experimental Station ◽  
Α Diversity ◽  
Synanthropization Index

Bird communities was researched according to the transect method in the nesting period of 2013 and 2015. 4 model forest plots in the Boyarskaya Experimental Station were selected. All of them are culturelphytocenoses based onPinus sylvestris L., Quercus robur L., Q. rubra L. The species composition of birds, their abundance, α-diversity indices, synanthropization index of bird communities (to Jedryctkowski) were analyzed. The similarity of bird communities was determined using cluster analysis in "Origin Pro 9.0". 65 bird species of 11 orders were recorded. 35 species of them live in the species reserve. On model plots that not have conservation status, the number of species in bird communities is 20–27. In plots with a dominance of Q. robur, 42 species were recorded, with a dominance of P. sylvestris - 35 species of the birds. Dominants in bird communities Parus major L. and Fringilla coelebs L. The presence in the list of subdominants Anthus trivialis L. and Phylloscopus sibilatrix Bechstein is a positive characteristic of the forest. The synanthropic of bird communities increases according to the increase in anthropic load: the synanthropization index from 0.4 to 0.65, the relative abundance of synanthropic birds in communities from 0.66 to 0.81. There are no alien birds. The species diversity and the number of bird species in the communities decreases along the gradient of increasing anthropic load. The similarity of bird communities and their α-diversity depends by the anthropic load, and not by the ratio of the species composition of the forest trees. The distribution of relative abundance of species in bird communities, on the contrary, is associated with the ratio of the species composition of trees. In forest plots dominated by P. sylvestris, bird communities are balanced, in plots with a predominance of Q. robur, disturbances in the development of bird communities are noticeable.

scholarly journals Conservation of fishes in the Elands River, Mpumalanga, South Africa: Past, present and future

Koedoe ◽  
2014 ◽  
Vol 56 (1) ◽  
Author(s):  
Gordon C. O’Brien ◽  
Nico J. Smit ◽  
Victor Wepener
Keyword(s):  
South Africa ◽  
Fish Community ◽  
Conservation Status ◽  
Critically Endangered ◽  
Current Status ◽  
Population Status ◽  
Management Actions ◽  
Fish Community Composition ◽  
Conservation And Management

In an isolated reach, between two large natural waterfalls in the Elands River in Mpumalanga, populations of a critically endangered Kneria sp., the endangered Chiloglanis bifurcus and a genetically unique population of Labeobarbus polylepis occur. The aim of this article was to evaluate past efforts to conserve these fishes, describe the current status and propose future conservation and management actions. The population status assessments were based on a series of fish community composition and population structure evaluations from surveys undertaken at 22 sites during seven surveys from 2002 to 2006. Although water-use activities have continued to increase in the area, impacts have been offset by conservation efforts initiated almost 30 years ago. The existing C. bifurcus population appears to be stable, which is reflected in the downgrading of the conservation status of the species from critically endangered to endangered. The abundance of the kneriid population appears to be increasing and spreading to other tributaries in the study area. The abundance of L. polylepis appears to be increasing but has still not reached historical levels.Conservation implications: Continued conservation efforts are required to protect these fishes. This case study presented a rare example of how the impacts associated with the use of aquatic resources in South Africa can successfully be offset by conservation efforts.

Dimorphisme sexuel et variations morphométriques chez l'hermine, Mustela erminea cicognanii

1986 ◽  
Vol 64 (9) ◽  
pp. 1966-1972 ◽  
Author(s):  
Michel Raymond ◽  
Jean-Marie Bergeron
Keyword(s):  
Relative Abundance ◽  
Prey Species ◽  
The Other ◽  
Female Size ◽  
Agricultural Lands ◽  
Mustela Erminea ◽  
Size Dimorphism ◽  
Young Males ◽  
Dimorphisme Sexuel ◽  
The One

Lengths and weights were measured in a group of live ermines captured between 1978 and 1981 on agricultural lands in southern Quebec to determine the importance of size dimorphism, as well as evaluating intrasexual variations within a particular group on the one hand, and variations between the populations on the other. Mean weight of males (112,1 g) was nearly twice that of females (59,8 g) and the dimorphism index was 1,9. Mean weights varied significantly between years as a result of the relative abundance of young, especially males. It thus seems that variations either in length or weight are significantly lower in females, even after the effect of the number of young males has been corrected. A comparison of length and weight measurements of individuals in different groups of northeastern North American ermines showed that variability is considerably lower in females. These results agree with the hypothesis that female size is adjusted to that of a dominant prey species.[Journal translation]

scholarly journals Diversity Of Wildlife At Ruhitpur Union, Keraniganj, Dhaka

2014 ◽  
Vol 40 (2) ◽  
pp. 295-308
Author(s):  
M Firoj Jaman ◽  
Md Salahuddin Majumder ◽  
Md Sakhawat Hossain ◽  
Md Mokhlesur Rahman ◽  
Mayen Uddin
Keyword(s):  
Climate Change ◽  
Relative Abundance ◽  
Lower Risk ◽  
Habitat Degradation ◽  
Management Practice ◽  
Present Species ◽  
Transect Line ◽  
Data Deficient ◽  
Over Exploitation ◽  
Conservation And Management

The study was carried out through direct field observation by plot counting; transect line method and interviewing the local people from September 2011 to March 2012. A total of 83 species of wildlife belonging to 18 orders, 34 families and 64 genera was recorded. Of them, 4 (4.82%) species were amphibians, 17 (20.48%) reptiles, 55 (66.27%) birds and 7 (8.43%) mammals. Of the amphibians, 3 (75%) were frogs and rest 1 (25%) was toad. Of the reptiles, 3 (17.65%) were turtles, 7 (41.18%) lizards and 7 (41.18%) were snakes. Of the birds, 30 (54.55%) were passerines and remaining 25 (45.45%) were non-passerines. Regarding the resident status, 44 (80.00%) species of birds were resident and 11 (20.00%) were winter migrants. Of the mammals, 4 (57.13%) were rodents, 1 (14.29%) bats, 1 (14.29%) carnivore and 1(14.29%) insectivore. The relative abundance showed that 16 (20.00%) were very common, 17 (21.18%) common, 22 (25.8854) fairly common and 28 (32.94%) were few. Among the threatened categories, 2 (2.35%) were critically endangered, 3 (3.53%) endangered, 13 (15,29%) vulnerable, 50 (61 18%) lower risk and 15 (17.65%) species were data deficient Some threats were identified as the cause for the declining of the biodiversity i.e. habitat degradation, climate change, over exploitation of agricultural lands. Implementation of conservation and management practice is necessary to protect the diversity of present species and their population in the studied habitats Asiat. Soc. Bangladesh, Sci. 40(2): 295-308, December 2014

Aquatic and semi aquatic Hemiptera community of Sonebeel, the largest wetland of Assam, northeastern India

2018 ◽  
Vol 10 (13) ◽  
pp. 12792-12799
Author(s):  
Anupama Saha ◽  
Susmita Gupta
Keyword(s):  
Species Richness ◽  
Pest Control ◽  
Relative Abundance ◽  
Species Distribution ◽  
Diversity Indices ◽  
Environmental Data ◽  
Northeastern India ◽  
Ecological Roles

Aquatic and semiaquatic Hemiptera bugs play significant ecological roles, and they are important indicators and pest control agents.  Little information is currently available concerning its populations in southern Assam.  This study assessed hemipterans in four sites of Sonebeel, the largest wetland in Assam (3458.12 ha at full storage level), situated in Karimganj District.  The major inflow and outflow of the wetland are the rivers Singla and Kachua, respectively (the Kachua drains into the Kushiyara River).  Samples were trapped with pond nets and were seasonally recorded.  This study recorded a total of 28 species of aquatic and semiaquatic hemipterans belonging to 20 genera under nine families.  Population, geographical and environmental data (e.g., rainfall) were used to assess the relative abundance of species, species richness and different diversity indices, and species distribution. 

Chasing the phantom: biogeography and conservation of Vipera latastei-monticola in the Maghreb (North Africa)

2018 ◽  
Vol 39 (2) ◽  
pp. 145-161 ◽  
Author(s):  
Inês Freitas ◽  
Soumia Fahd ◽  
Guillermo Velo-Antón ◽  
Fernando Martínez-Freiría
Keyword(s):  
North Africa ◽  
Habitat Degradation ◽  
Conservation Status ◽  
Western Mediterranean ◽  
Niche Modelling ◽  
Habitat Transformation ◽  
Mountain Ranges ◽  
Management Actions ◽  
Suitable Space ◽  
The Impact

Abstract The Maghreb region (North Africa) constitutes a major component of the Mediterranean Basin biodiversity hotspot. During the last centuries, a consistent human population growth has led to an unprecedented rate of habitat transformation and loss in the region and thus, threatening its biodiversity. The Western Mediterranean viper Vipera latastei-monticola inhabits humid and subhumid areas in the main mountain ranges of the Maghreb, facing such threatening factors; however, its elusive character and rarity hindered data collection for distinct biological purposes. Here, we study the biogeographical patterns and conservation status of the Maghrebian V. latastei-monticola resulting from recent sampling campaigns in Morocco and Tunisia. We update species distribution, and integrate phylogeographic and ecological niche modelling analyses at both species and lineage level to identify suitable areas, and to evaluate the impact of anthropogenic transformation and level of protection of their suitable space. We identified four highly divergent mitochondrial lineages, including a new lineage endemic to the Western High Atlas, with allopatric distributions and restricted to mountain ranges, supporting the role of mountains as past climatic refugia. Despite the remoteness of suitable areas, we report widespread habitat degradation and identify the low effectiveness of the current protected areas system in preserving the species and lineages range. Our study shows the urgent need to apply management actions for the long-term conservation of this vulnerable species and suggests a revaluation of the specific status of V. monticola, as these populations likely represent an ecotype of V. latastei.

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