نتایج جستجو برای: threatened or endangered
تعداد نتایج: 3563689 فیلتر نتایج به سال:
A framework for the assessment of the spatial and temporal patterns of threatened coastal delphinids
The massively accelerated biodiversity loss rate in the Anthropocene calls for an efficient and effective way to identify the spatial and temporal dynamics of endangered species. To this end, we developed a useful identification framework based on a case study of locally endangered Sousa chinensis by combining both LEK (local ecological knowledge) evaluation and regional boat-based survey metho...
Using non-lethal methods is especially important for the monitoring and conservation planning of endangered species and their habitats. The goal of this study is to check whether the current method of monitoring endangered micro-snail populations by soil sampling, which involves killing the snails and altering their microhabitat, could be replaced by a non-lethal method. The invasive and time-c...
Background The North Atlantic archipelagos of Madeira and Selvagens present a unique biological diversity including, presently, 56 endemic spider species. Several recent projects provide valuable information on their distribution across most islands and habitats. To date, the only endemic spider assessed according to the IUCN Red List criteria is Hogna ingens. The objective of this paper is to ...
Penguins are the most threatened group of seabirds after albatrosses. Although penguins are regularly captured in fishing gear, the threat to penguins as a group has not yet been assessed. We reviewed both published and grey literature to identify the fishing gear types that penguins are most frequently recorded in, the most impacted species and, for these susceptible species, the relative impo...
Bull trout (Salvelinus confluentus) were recently listed as threatened in the United States under the federal Endangered Species Act. Present and historical habitat of this species includes waterways that have been impacted by metals released from mining and mineral processing activities. We conducted paired bioassays with bull trout and rainbow trout (Oncorhynchus mykiss) to examine the relati...
The conservation status of birds in the Ketambe Research Station area, Gunung Leuser National Park, needs to be done so that more attention can paid preservation bird diversity. This study aims observe various three altitude zones, namely zone 1 (350-550 m asl), 2 (550-800 and 3 (800-1050 asl). Observations were made May-August 2019 at Station, Southeast Aceh. results observations as a whole, t...
Biodiversity corridors comprise a mosaic of land uses connecting fragments of natural forest across a landscape. Two such corridors have been established along the eastern coast of Brazil: the Serra do Mar and the Central da Mata Atlântica corridors, along which most of the coastal plains are restinga areas. In this study, we analyze the present status of the endemic and endangered terrestrial ...
Spatially extensive analysis of satellite, climate, and census data reveals humanenvironment interactions of regional or continental concern i n the United States. A grid-based principal components analysis of Bureau of Census variables revealed two independent demographic phenomena, a-settlement reflecting traditional human settlement patterns and p-settlement describing relative population gr...
In this study we examined the floristic diversity of Sutai Khairkhan Mountain Nature Reserve in western Mongolia’s Altai range. This nature reserve area was established 2019 and compared to nearby reserves, its flora is relatively understudied. From field surveys 2014, 2019, 2020, collected about 400 herbarium specimens from various habitats different altitudes reserve. We identified total 317 ...
The unprecedented decline of biodiversity worldwide is urging scientists to collect and store biological material from seriously threatened animals, including large mammals. Lyophilization is being explored as a low-cost system for storage in bio-banks of cells that might be used to expand or restore endangered or extinct species through the procedure of Somatic Cell Nuclear Transfer (SCNT). He...
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