Climate Change Alarms the Survival of Near Threatened Species Malayan Giant Squirrel (Ratufa bicolor Sparrman, 1778) in India

Mammal Study ◽  
2020 ◽  
Vol 45 (4) ◽  
Author(s):  
Paromit Chatterjee ◽  
Basudev Tripathy ◽  
Kailash Chandra ◽  
Goutam Kumar Saha ◽  
Krishnendu Mondal
Keyword(s):  
Climate Change ◽  
Threatened Species ◽  
Near Threatened

scholarly journals Batch-produced, GIS-informed range maps for birds based on provenanced, crowd-sourced data inform conservation assessments

PLoS ONE ◽  
2021 ◽  
Vol 16 (11) ◽  
pp. e0259299
Author(s):  
Ryan M. Huang ◽  
Wilderson Medina ◽  
Thomas M. Brooks ◽  
Stuart H. M. Butchart ◽  
John W. Fitzpatrick ◽  
...  
Keyword(s):  
Threatened Species ◽  
Forest Cover ◽  
Systematic Approach ◽  
Bird Species ◽  
Batch Processing ◽  
Considerable Extent ◽  
Species Ranges ◽  
Conservation Assessments ◽  
And Shifts ◽  
Near Threatened

Accurate maps of species ranges are essential to inform conservation, but time-consuming to produce and update. Given the pace of change of knowledge about species distributions and shifts in ranges under climate change and land use, a need exists for timely mapping approaches that enable batch processing employing widely available data. We develop a systematic approach of batch-processing range maps and derived Area of Habitat maps for terrestrial bird species with published ranges below 125,000 km2 in Central and South America. (Area of Habitat is the habitat available to a species within its range.) We combine existing range maps with the rapidly expanding crowd-sourced eBird data of presences and absences from frequently surveyed locations, plus readily accessible, high resolution satellite data on forest cover and elevation to map the Area of Habitat available to each species. Users can interrogate the maps produced to see details of the observations that contributed to the ranges. Previous estimates of Areas of Habitat were constrained within the published ranges and thus were, by definition, smaller—typically about 30%. This reflects how little habitat within suitable elevation ranges exists within the published ranges. Our results show that on average, Areas of Habitat are 12% larger than published ranges, reflecting the often-considerable extent that eBird records expand the known distributions of species. Interestingly, there are substantial differences between threatened and non-threatened species. Some 40% of Critically Endangered, 43% of Endangered, and 55% of Vulnerable species have Areas of Habitat larger than their published ranges, compared with 31% for Near Threatened and Least Concern species. The important finding for conservation is that threatened species are generally more widespread than previously estimated.

scholarly journals Update on the Geographic Distribution of Lutra lutra at the Romanian Black Sea Coast

2017 ◽  
Vol 60 (1) ◽  
pp. 413-417 ◽  
Author(s):  
Daniyar Memedemin ◽  
Marian Tudor ◽  
Dan Cogălniceanu ◽  
Marius Skolka ◽  
Gabriel Bănică ◽  
...  
Keyword(s):  
Black Sea ◽  
Threatened Species ◽  
The Black Sea ◽  
Lutra Lutra ◽  
Black Sea Coast ◽  
European Otter ◽  
First Time ◽  
The City ◽  
Near Threatened ◽  
Sea Coast

Abstract We report the occurrence of the European otter (Lutra lutra Linnaeus, 1758) along the entire Romanian Black Sea coast, for the first time. Several sightings were within the harbor and the city of Constanţa, indicating that the otter can accommodate to and tolerate high human impact. The report is based on observations made between 2012 and 2015. The species has been previously reported from all Romanian regions but not from the Black Sea coast. The occurrences reported within this article confirm an extension of the range of this Near Threatened species on the Romanian Black Sea coast, most probably due to the increasing of population size from other sources such as the Danube floodplain.

Ecological patterns and effectiveness of protected areas in the preservation of Mimusops species’ habitats under climate change

2021 ◽  
Author(s):  
Gisèle K. Sinasson ◽  
Charlie M. Shackleton ◽  
Oscar Teka ◽  
Brice Sinsin
Keyword(s):  
Climate Change ◽  
Protected Areas ◽  
Threatened Species ◽  
Sustainable Management ◽  
Ecological Factors ◽  
Habitat Requirements ◽  
Climate Change Scenarios ◽  
Management Actions ◽  
Ecological Patterns ◽  
Suitable Habitats

<p>Understanding the niche and habitat requirements of useful and threatened species, their shifts under climate change and how well protected areas (PAs) preserve these habitats is relevant for guiding sustainable management actions. Here we assessed the ecological factors underlying the distribution of two multipurpose and threatened species, <i>Mimusops andongensis</i> and <i>M</i>. <i>kummel</i>, in Benin, and potential changes in the suitable habitats covered by PAs, under climate change scenarios. Fifty seven occurrence points were collected for <i>M</i>. <i>andongensis</i> and 81 for <i>M</i>. <i>kummel</i>. </p>

scholarly journals First Occurrence of the Grey Fox, Urocyon cinereoargenteus, in New Brunswick: a Climate-change Mediated Range Expansion?

2008 ◽  
Vol 122 (2) ◽  
pp. 169
Author(s):  
Donald McAlpine ◽  
James D. Martin ◽  
Cade Libby
Keyword(s):  
Climate Change ◽  
New Brunswick ◽  
Threatened Species ◽  
North American ◽  
Range Expansion ◽  
Range Extension ◽  
Urocyon Cinereoargenteus ◽  
Subadult Male ◽  
Warming Climate ◽  
First Occurrence

The first occurrence in New Brunswick of the Grey Fox (Urocyon cinereoargenteus), a threatened species in Canada, is documented based on a 4.3 kg subadult male trapped in the southwestern corner of the province. This is an approximate range extension of 135 km from the most northerly Maine occurrence and may reflect a larger North American range expansion underway since 1930-40, perhaps in response to warming climate.

scholarly journals The threatened and near-threatened birds of Luzon, Philippines, and the role of the Sierra Madre mountains in their conservation

1995 ◽  
Vol 5 (1) ◽  
pp. 79-115 ◽  
Author(s):  
Michael Køie Poulsen
Keyword(s):  
Threatened Species ◽  
The Philippines ◽  
Forest Birds ◽  
Primary Forest ◽  
Mountain Range ◽  
Altitudinal Distribution ◽  
Sierra Madre ◽  
Special Concern ◽  
Near Threatened

SummaryFieldwork on the distribution, status and ecology of birds was conducted in the northern Sierra Madre mountain range, Luzon, Philippines, during March–May 1991 and March-May 1992. The findings show the area to be one of the most important for conservation of threatened species of birds in all Asia. The results are here combined with evidence from earlier surveys by other searchers. Fourteen threatened and 18 near-threatened species are now known from the area. This paper reports on all the threatened and near-threatened resident species of the island of Luzon, with special emphasis on their occurrence in the Sierra Madre mountains. In addition, the paper treats species with very limited global distribution that breed in Luzon, and lists species of forest birds endemic to the Philippines that have not previously been reported from the Sierra Madre mountains. Maps show the known sites for 17 species of special concern for conservation. New data on the altitudinal distribution of threatened and near-threatened species suggest that it is essential to protect primary forest at all elevations.

scholarly journals The avifauna of the Beni Biological Station, Bolivia

1997 ◽  
Vol 7 (2) ◽  
pp. 117-159 ◽  
Author(s):  
Robin C. Brace ◽  
Jon Hornbuckle ◽  
James W. Pearce-Higgins
Keyword(s):  
Threatened Species ◽  
Bird Species ◽  
Austral Summer ◽  
The South ◽  
Biological Station ◽  
Flow Monitoring ◽  
Degree Of Isolation ◽  
Near Threatened ◽  
Forest Islands

SummaryAn annotated compendium of all those bird species known to have occurred in the lowland “Man and Biosphere” Beni Biological Station (B.B.S.) reserve is provided. Previous checklists are reviewed, together with sightings accumulated over the 1992–1995 period during which approximately 70 new species have been added to the reserve inventory, bringing the total to 478. Occurrence across the 12 delineated habitats, relative abundance and sighting documentation are given for each species. The avifauna of the B.B.S. is mixed biogeographically; in addition to a substantial component of lowland birds widespread throughout South America, it is composed of Amazonian, cerrado and chaco elements also. Representation from the Bolivian Yungas is minimal. Significantly, no less than four threatened and 15 near-threatened species have occurred, including the little known Bolivian endemic Unicoloured Thrush Turdus haplochrous, and the enigmatic White-winged Nightjar Caprimulgus candicans, known until recently only from Emas National Park (Brazil). Short accounts are provided detailing records of all of these species. Birds of the reserve core, consisting largely of humid tropical forest formations inundated during the austral summer, appear not to be subjected currently to any serious environmental degradation, although some subsistence clearance by Chimane Indians in the northern reaches of the reserve gives some cause for concern. Of much greater import, however, are changes occurring outside the confines of the B.B.S. These include increasing urbanization immediately to the west (and associated road upgrading) and forest fragmentation to the south brought about by logging. The latter is especially worrying because linkage of the B.B.S. forest block to surrounding forest is already physically tenuous, and therefore it is imperative that future logging activities be geared to minimize isolation occurring and the damaging restriction of gene flow. Monitoring in rainforest immediately south of the reserve should become routine to warn of putative avifaunal impoverishments. Extensive surveying of the 2,500-ha El Porvenir éstancia (savanna and related forest islands) due to be assimilated shortly into the B.B.S., which constitutes less than 2% of the area under consideration, has shown that it is used by no less than three threatened and up to nine near-threatened species. In the absence of data relating to other savanna areas (c. 15%) at present, the exact status of each species at the B.B.S. remains imprecise and begs for further research to be undertaken. Unfortunately, present management of the El Porvenir savanna is not conducive to the long-term maximization of populations of these species, several of which have local strongholds in this part of Beni. We recommend that the current policy of cattle ranching adopted by this éstancia should cease or be reduced dramatically, to minimize grazing and trampling damage, and that measures should be taken to reduce incursions of fires started wilfully in neighbouring properties. The Academia Nacional de Ciencias de Bolivia, which administers the reserve, should be encouraged to safeguard and enhance the savanna complement further by ensuring that the impending ratification of El Porvenir proceeds as quickly as possible, and by purchasing additional tracts of land to the south of the present southern reserve boundary, where feasible. Such actions should not only secure the future of the biota of the savanna habitat within the B.B.S. but also should ameliorate the degree of isolation which has occurred already by preserving the “curiches” (former river beds) and forest islands which act as access corridors for forest-dwelling and other birds.

Invasive hybridization in a threatened species is accelerated by climate change

2014 ◽  
Vol 4 (7) ◽  
pp. 620-624 ◽  
Author(s):  
Clint C. Muhlfeld ◽  
Ryan P. Kovach ◽  
Leslie A. Jones ◽  
Robert Al-Chokhachy ◽  
Matthew C. Boyer ◽  
...  
Keyword(s):  
Climate Change ◽  
Threatened Species
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