scholarly journals General survey on avifaunal composition of Betana wetland, Morang, Province number 1, Eastern Nepal

BIBECHANA ◽  
2018 ◽  
Vol 16 ◽  
pp. 154-164
Author(s):  
Milan Kharel
Keyword(s):  
Field Survey ◽  
Diversity Index ◽  
Winter Season ◽  
Bird Species ◽  
Iucn Red List ◽  
Red List ◽  
Sampling Station ◽  
General Survey ◽  
Species Richness And Abundance ◽  
Near Threatened

The present study conducted in Betana wetland, Morang, Province number 1, Nepal. The study based on the field survey in order to find out the avifaunal composition. In the present study, total 320 individuals of birds belonging 49 species, 30 families and 15 orders reported from Betana wetland based on field observation. The highest proportions of individuals recorded from the sampling station F1 forest area was 35% (n=112). The highest number of species (n= 15) recorded belong to the order Passeriformes with nine families, followed by Coraciformes with three families and four species then Pelicaniformes with two families and six species. Of them, two species viz. Grey-headed fish eagle (Icthyophaga humilis) and Lesser Adjutant Stork (Leptoptilos javanicus ) are kept under near threatened (NT) and vulnerable (VU) category of  IUCN Red List of threatened species.  About 70 % of total bird recorded was resident type and about 35% of total recorded bird species common in abundance. The species richness and abundance of avifauna found higher in winter season than summer. Compared to the previous study, birds belonging to four more families and five more orders recorded this time. The Shanonn–Weiner diversity index and species evenness of avifauna from the study area found 1.332 and 0.789 respectively.BIBECHANA 16 (2019) 154-164

scholarly journals Mangrove vegetation and bird communities around Tegal Port, Central Java, Indonesia

2020 ◽  
Vol 21 (4) ◽  
Author(s):  
Slamet Isworo ◽  
POERNA SRI OETARI
Keyword(s):  
Diversity Index ◽  
Conservation Status ◽  
Bird Species ◽  
Similarity Index ◽  
Iucn Red List ◽  
Red List ◽  
Bird Communities ◽  
Central Java ◽  
Wiener Diversity Index ◽  
Mangrove Vegetation

Abstract. Isworo S, Oetari PS. 2020. Mangrove vegetation and bird communities around Tegal Port, Central Java, Indonesia. Biodiversitas 21: 1551-1560. The ecological balance in Tegal harbor area needs to get serious attention due to the impacts of Tegal Port activities. For this purpose, the diversity of mangrove and avifauna (bird) can be used as bio-indicators of the ecological stability of the area. This study aimed to assess and analyze the diversity of plants and avifauna (birds) that live in mangrove and coastal zones around Tegal Port development area. Data collection was conducted using purposive random sampling method on two sites for vegetation and three sites for avifauna. The importance value index, Shannon-Wiener diversity index and Sorensen’s similarity index was calculated for the vegetation. For birds, we calculated the diversity and similarity index as well as identified their conservation status based on the IUCN Red List, CITES and government regulations. In terms of vegetation, Rhizophora mucronata and Avicennia marina dominate Site 2 (Tegalsari) while Casuarina equisetifolia and R. mucronata dominate Site 3 (Alam Indah Beach). Overall, the vegetation has low biodiversity index and similarity between sites is also low. For bird, there are 37 species from 18 families. Site 1 (Muara Reja) has the highest number of species with 29 species, followed by Site 2 (Tegalsari) with 25 species, and Site 3 (Alam Indah Beach) with 22 species. The three sites have moderate diversity index and there is high similarity index between sites. All bird species found in the study sites are listed as Least Concern under IUCN Red List, while there are two species protected under national protection law, i.e. Ardea alba and Glareola maldivarum. In general, the condition of mangrove vegetation around Tegal Port has low diversity. This suggests that the pressure on the environment is quite high, causing only few plant species to be able to live and dominate the ecosystem. The limited vegetation also causes birds community, especially the protected A. alba and G. maldivarum in Site 2, becomes increasingly difficult to find, because places to find food, breeding places and places to rest are disturbed.

scholarly journals Key conservation issues for migratory land- and waterbird species on the world's major flyways

2008 ◽  
Vol 18 (S1) ◽  
pp. S49-S73 ◽  
Author(s):  
Jeff S. Kirby ◽  
Alison J. Stattersfield ◽  
Stuart H. M. Butchart ◽  
Michael I. Evans ◽  
Richard F. A. Grimmett ◽  
...  
Keyword(s):  
Migratory Birds ◽  
Conservation Status ◽  
Bird Species ◽  
Iucn Red List ◽  
Red List ◽  
Neotropical Migrants ◽  
Infrastructure Development ◽  
Migratory Species ◽  
Waterbird Species ◽  
Near Threatened

AbstractAn estimated 19% of the world's 9,856 extant bird species are migratory, including some 1,600 species of land- and waterbirds. In 2008, 11% of migratory land- and waterbirds were classed by BirdLife International as threatened or near-threatened on the IUCN Red List. Red List indices show that these migrants have become more threatened since 1988, with 33 species deteriorating and just six improving in status. There is also increasing evidence of regional declines. Population trend data show that more Nearctic–Neotropical migrants have declined than increased in North America since the 1980s, and more Palearctic–Afrotropical migrants breeding in Europe declined than increased during 1970–2000. Reviews of the status of migratory raptors show unfavourable conservation status for 51% of species in the African–Eurasian region (in 2005), and 33% of species in Central, South and East Asia (in 2007). Land-use change owing to agriculture is the most frequently cited threat affecting nearly 80% of all threatened and near-threatened species. However, while agricultural intensification on the breeding grounds is often proposed as the major driver of declines in Palearctic–Afrotropical migrants, some species appear to be limited by the quantity and quality of available habitat in non-breeding areas, notably the drylands of tropical Africa. Forest fragmentation in breeding areas has contributed to the declines of Nearctic–Neotropical migrants with deforestation in non-breeding areas another possible factor. Infrastructure development including wind turbines, cables, towers and masts can also be a threat. Over-harvesting and persecution remain serious threats, particularly at key migration locations. Climate change is affecting birds already, is expected to exacerbate all these pressures, and may also increase competition between migratory and non-migratory species. The conservation of migratory birds thus requires a multitude of approaches. Many migratory birds require effective management of their critical sites, and Important Bird Areas (IBAs) provide an important foundation for such action; however to function effectively in conserving migratory species, IBAs need to be protected and the coherence of the network requires regular review. Since many migratory species (c. 55%) are widely dispersed across their breeding or non-breeding ranges, it is essential to address the human-induced changes at the wider landscape scale, a very considerable challenge. Efforts to conserve migratory birds in one part of the range are less effective if unaddressed threats are reducing these species' populations and habitats elsewhere. International collaboration and coordinated action along migration flyways as a whole are thus key elements in any strategy for the conservation of migratory birds.

scholarly journals Avifaunal Diversity of Institute of Forestry Complex, Hetauda Metropolis, Nepal

2020 ◽  
Vol 17 ◽  
pp. 83-101
Author(s):  
Santish Bajagain ◽  
Santosh Pokhrel ◽  
Shishila Baniya ◽  
Aavas Pradhan ◽  
Surakchya Paudel ◽  
...  
Keyword(s):  
Species Richness ◽  
Diversity Index ◽  
Bird Species ◽  
Iucn Red List ◽  
Shannon Index ◽  
Red List ◽  
Line Transect ◽  
Simpson Index ◽  
Point Count ◽  
Bird Habitat

Avifaunal diversity is the measure of species diversity via species richness and evenness. To this aim, avifaunal survey was conducted in the Institute of Forestry Complex, Hetauda from November 2017 to June 2018. Using line transect and point count methods, 132 species of birds were recorded, representing 15 orders and 44 families. Three species of these birds are in IUCN Red List while 90, 27 and 15 species are residential, visitor and migrant respectively. Higher Shannon diversity index (4.47) and Margalef index (18.78) indicate marked diversity and richness of bird species. A high value calculated for the Simpson index (0.98) represents higher evenness within the species individuals. Although, Pielou’s evenness index (0.92) shows uniformity in the species distribution, Shannon index seems to be influenced by diversity index, species richness and evenness values. The avifaunal diversity in the study area shows the importance of the Institute of Forestry Complex as a suitable bird habitat.

scholarly journals Status of biodiversity in wetlands of Biswanath District of Assam, India

2021 ◽  
Vol 22 (1) ◽  
Author(s):  
RANJIT KAKATI ◽  
ABHISHEK BHUYAN ◽  
Dipankar Borah
Keyword(s):  
Vascular Plants ◽  
Bird Species ◽  
Iucn Red List ◽  
Red List ◽  
Future Studies ◽  
Global Context ◽  
Wetland Biodiversity ◽  
In The Wild ◽  
Wetland Habitats ◽  
Near Threatened

Abstract. Kakati R, Das N, Bhuyan A, Borah D. 2021. Status of biodiversity in wetlands of Biswanath District of Assam, India. Biodiversitas 22: 453-472. Reports on biodiversity of a region are the firsthand data to understand the assemblage, importance, and to follow conservation inputs. The present study was aimed to document and analyze the wetland biodiversity of Biswanath District of Assam, India. Data was collected from 27 wetland habitats from 2015-2019. A total of 235 taxa were recorded, of which 79 taxa (77 species, one variety, and one subspecies) were vascular plants, 83 water birds, 47 fishes, 7 amphibians, 18 reptiles, and 2 mammals. None of the plants and amphibians fall under any of the threatened categories as per IUCN Red List 2020. However, among the bird species, 2 species are assessed as endangered, 4 species as vulnerable, and 10 species as near threatened. Among the fishes, 2 are vulnerable and 3 near threatened. Among the reptiles one is extinct in the wild (EW), 3 endangered and 3 are vulnerable. Along with the checklist of the present biodiversity, past and present population trends, as well as earlier records from Assam of the threatened species, is provided. The results of this study can be used by stakeholders for species identification and as the baseline taxonomic account for future studies on the conservation of these wetland species in a global context.

scholarly journals Avifaunal records from Chalis Ek, North Andaman Island: insights into distribution of some Andaman Island birds

Check List ◽  
2013 ◽  
Vol 9 (1) ◽  
pp. 34 ◽  
Author(s):  
Pankaj Koparde ◽  
Manchi Shirish S.
Keyword(s):  
Southeast Asia ◽  
Anthropogenic Disturbance ◽  
New Records ◽  
Single Species ◽  
Iucn Red List ◽  
Red List ◽  
Andaman Island ◽  
Spatiotemporal Scale ◽  
Near Threatened

Species records are important for assessing the distribution and status of species over a spatiotemporal scale. Andaman archipelago, off Southeast Asia, is a high avian endemism area, covering an area of >5000 km2. We conducted this survey in 2011 to make an inventory of avifauna of Chalis Ek area. A total of 73 species, belonging to 61 genera and 34 families were recorded, of which 60 were resident, 11 were winter migrants, one vagrant, and a single species introduced from mainland India. Three species were found to be new records, expanding distribution. Thirteen were endemic to the Andaman and Nicobar group of islands and eleven were listed as near threatened in the IUCN Red List. This study shows that sites such as Chalis Ek, even though subject to moderate anthropogenic disturbance, still hosts a large and distinctive avifauna and should be protected.

scholarly journals Đa dạng tài nguyên cây làm thuốc tại khu bảo tồn thiên nhiên Na Hang, tỉnh Tuyên Quang

2021 ◽  
Vol 3 (6) ◽  
pp. 44-49
Author(s):  
Thị Hải Nguyễn ◽  
Huy Thái Trần ◽  
Thế Cường Nguyễn ◽  
Thị Thanh Vân Trần
Keyword(s):  
Medicinal Plants ◽  
Medicinal Plant ◽  
Nature Reserve ◽  
Diversity Index ◽  
Iucn Red List ◽  
Red List ◽  
Rare And Endangered Species ◽  
The Family ◽  
Rare And Endangered ◽  
Data Book

In Na Hang Nature Reserve there was identified 647 medicinal plant species belonging to 137 families, 4 vascular divisions: Lycopodiophyta with 3 species, 2 families; Polypodiophyta with20 species, 12 families; Pinophyta with 6 species, 4 families; Magnoliophyta with 618 species, 119 families. Concerning the diversity index: the family index: 4.72; the genus index: 1.49; the genus index/the family index: 3.16. In Na Hang Nature Rserve 10 families more species occupying 7.30% of the total families of medicinal plants with the total of species occupying 31.68% and 28.64% of the total of genus. The family more diverse is Asteraceae with 32 species, occupying 4.95% of the total of medicinal plants identified; following is Rubiaceae with 28 species (4.33%), Euphorbiaceae with 26 species (4.02%); Moraceae with 23 species (3.55%); Cucurbitaceae, Verbenaceae with the same number of species 18 (2.78%); Araceae with 17 species (2.63%); Zingiberaceae with 16 species (2.47%); Urticaceae with 15 species (2.32%); and the last are families Poaceae of species 12 (1.85%) in the total of species. 10 genera more diverse with 59 species (9.12% of the total of medicinal plants), Ficus (Moraceae) is more diverse with 15 species (2.32% of the total of medicinal plants) and another genera with from 4 to 7 species. In Nature Reserve of Na Hang we have confirmed the distribution of 30 precious and rare and endangered species priorto the conservation: 23 species in Vietnam Red Data Book (2007): VU - 16 species, EN - 07 species; 17 species in Red List of medicinal plant of Vietnam (2006):VU - 10 species, EN - 6 species and CR – 01 species; 07 species in IUCN Red List (2014): LR - 06 species and VU – 01 species.

scholarly journals Justicia thailandica, a new species of Acanthaceae from Thailand

PhytoKeys ◽  
2019 ◽  
Vol 124 ◽  
pp. 11-22
Author(s):  
Yi Tong ◽  
Yunfei Deng
Keyword(s):  
New Species ◽  
Iucn Red List ◽  
Seed Morphology ◽  
Red List ◽  
Length Ratio ◽  
A New Species ◽  
Near Threatened

A new species of Justicia (Acanthaceae), J.thailandica, is described and illustrated from Thailand. The new species belongs to Justiciasect.Harnieria and is similar to J.quadrifaria and J.championii, but differs on account of the obviously densely white indumentum in the inflorescence bracts and calyx, ovate leaf blades with margin usually entire, spathulate inflorescence bracts and length ratio of calyx to mature capsule. It is assessed to be “Near threatened” (NE) according to IUCN Red List Category and Criteria. Pollen and seed morphology characters are also reported. Species of Justiciasect.Harnieria in Thailand are discussed and a key to the three recognized species is presented.

scholarly journals Inventarisasi dan Status Konservasi Herpetofauna di Punggualas, Taman Nasional Sebangau

2020 ◽  
Vol 2 (1) ◽  
pp. 1-5
Author(s):  
Andri Maulidi ◽  
Muhammad Rizki ◽  
Yohanes Edy Gunawan ◽  
Rabiatul Adawiyah ◽  
Yosua Yosua ◽  
...  
Keyword(s):  
Iucn Red List ◽  
Red List ◽  
Near Threatened

Informasi tentang herpetofauna di Punggualas, Taman Nasional Sebangau telah dilakukan pada tahun 2015. Tujuan dari penelitian ini adalah untuk menginventarisasi jenis-jenis herpetofauna setelah empat tahun dari data terakhir di Punggualas, Taman Nasional Sebangau. Metode yang digunakan dalam penelitian ini adalah Visual Encountered Survey (VES) selama empat hari di sepanjang transek Kahiu dan Metarius. Hasil penelitian menunjukkan bahwa terdapat 11 spesies yang terinventarisasi yang terdiri dari delapan spesies reptile (7 famili) dan tiga spesies amfibi (3 famili). Temuan ini lebih sedikit dibandingkan literatur pada tahun 2015 yaitu sebanyak 33 spesies yang terdiri dari 17 spesies reptile (13 famili) dan 16 spesies amfibi (4 famili). Hal ini dikarenakan perbedaan luas daerah pengamatan, lama pengamatan, metode, jumlah orang pengamat, dan tingkat keahlian pengamat. Lima spesies ditemukan pada penelitian ini yang belum ditemukan pada tahun 2015 yaitu Homalopsis buccata, Ahaetulla prasina, Cyrtodactylus sp., Siebenrockiella crassicollis, dan Notochelys platynota. Terkait dengan status, 28 spesies herpetofauna berstatus Least Concern, tiga spesies berstatus Vulnerable, dan satu spesies berstatus Near Threatened. Enam spesies lainnya belum memiliki status konservasi di IUCN Red List. Perlu dilakukan penelitian berikutnya tentang jumlah populasi dan pengamatan pada daerah yang lebih luas.     

scholarly journals The dynamics underlying avian extinction trajectories forecast a wave of extinctions

2019 ◽  
Vol 15 (12) ◽  
pp. 20190633 ◽  
Author(s):  
Melanie J. Monroe ◽  
Stuart H. M. Butchart ◽  
Arne O. Mooers ◽  
Folmer Bokma
Keyword(s):  
Extinction Risk ◽  
Population Decline ◽  
Bird Species ◽  
Iucn Red List ◽  
Red List ◽  
Extinction Rate ◽  
Critically Endangered Species ◽  
Extinction Rates ◽  
Historical Times ◽  
Risk Categories

Population decline is a process, yet estimates of current extinction rates often consider just the final step of that process by counting numbers of species lost in historical times. This neglects the increased extinction risk that affects a large proportion of species, and consequently underestimates the effective extinction rate. Here, we model observed trajectories through IUCN Red List extinction risk categories for all bird species globally over 28 years, and estimate an overall effective extinction rate of 2.17 × 10 −4 /species/year. This is six times higher than the rate of outright extinction since 1500, as a consequence of the large number of species whose status is deteriorating. We very conservatively estimate that global conservation efforts have reduced the effective extinction rate by 40%, but mostly through preventing critically endangered species from going extinct rather than by preventing species at low risk from moving into higher-risk categories. Our findings suggest that extinction risk in birds is accumulating much more than previously appreciated, but would be even greater without conservation efforts.

A new grass frog with rupicolous tadpoles from northern Zambia (Anura: Ptychadenidae)

Zootaxa ◽  
2018 ◽  
Vol 4462 (3) ◽  
pp. 349
Author(s):  
ALAN CHANNING ◽  
FRANK WILLEMS
Keyword(s):  
New Species ◽  
Population Size ◽  
Dna Sequences ◽  
Iucn Red List ◽  
Red List ◽  
Advertisement Call ◽  
Limited Extent ◽  
Iucn Red List Criteria ◽  
A New Species ◽  
Near Threatened

We describe a new species of Ptychadena from Mutinondo Wilderness in northern Zambia. It has rupicolous tadpoles that develop in a film of water. The species is distinguished on morphology, advertisement call and DNA sequences from other grass frogs and was found to be most closely related to P. broadleyi. It has no contrasting longitudinal bands on the posterior thigh, the foot is longer than half SVL, it has no light triangle on the snout, three phalanges of the fourth toe free of web and the snout has no skin folds. The species should be considered Near Threatened in terms of the IUCN Red List criteria given its limited extent of occurrence and population size. 

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