Results 91 to 100 of about 144,617 (321)
Near-infrared spectroscopy of AGB star candidates in Fornax, Sculptor and NGC 6822 [PDF]
, 2009 Context: The Asymptotic Giant Branch (AGB) phase is characterised by substantial mass loss that is accompanied by the formation of dust. In extreme cases this will make the star no longer visible in the optical. For a better understanding of AGB evolution it is important to identify and characterise these very red AGB stars.
arxiv +1 more source
Search for red dwarfs among X-ray objects of the deep survey of the equatorial region of the sky using eROSITA data [PDF]
arXiv, 2021 The paper presents the identification of the stars in the lower part of the Main Sequence among the objects of the deep survey of the equatorial region of the sky, performed by the eROSITA telescope at the SRG orbital observatory. Of the 27,910 X-ray objects, 110 are possibly candidates for identification with red dwarfs.
arxiv
Seeing Red: Analyzing IUCN Red List Data of South and Southeast Asian Amphibians [PDF]
, 2018 In the midst of the sixth mass extinction event which is currently underway, it appears that amphibians are one of the most impacted vertebrates. Over 6,500 amphibian species are listed on the IUCN Red List (an assessment tool which provides species ...
Gonzalez, Alexandra
core +1 more source
The Value of the IUCN Red List for Business Decision‐Making
, 2018 The IUCN Red List of Threatened Species provides assessments of extinction risk for over 80,000 species. It has become an important tool for conservation and for informing natural resource policy and management more broadly.
L. Bennun +10 more
semanticscholar +1 more source
The Depositional Record, EarlyView.Emblematic of global coral‐reef ecosystem decline, the coral ecosystem‐engineer Acropora palmata is now rare throughout much of the western Atlantic. We report for the first time, a significant record of late‐Holocene A. palmata populations that existed from ~4500 to 375 years before present in the Dry Tortugas, FL, USA.
Anastasios Stathakopoulos +4 more
wiley +1 more source
Wildlife Biology, EarlyView., 2023 Linear infrastructure represent a barrier to movement for many species, reducing the connectivity of the landscapes in which they reside. Of all linear infrastructure, roads and fences are two of the most ubiquitous, and are understood to reduce landscape connectivity for wildlife.
Isla Botting +7 more
wiley +1 more source
The red supergiant population in the Perseus arm [PDF]
, 2017 We present a new catalogue of cool supergiants in a section of the Perseus arm, most of which had not been previously identified. To generate it, we have used a set of well-defined photometric criteria to select a large number of candidates (637) that were later observed at intermediate resolution in the the Infrared Calcium Triplet spectral range ...
arxiv +1 more source
Seeing Red: Analyzing IUCN Red List Data [PDF]
, 2018 In the midst of the current sixth mass extinction event which is currently underway, it appears that amphibians are one of the most impacted vertebrates.
Francis-Lyon, Patricia +2 more
core +1 more source
Gulf of Mexico oil blowout increases risks to globally threatened species [PDF]
, 2011 Fourteen marine species in the Gulf of Mexico are protected by the US Endangered Species Act, the Marine Mammal Protection Act, and the Migratory Bird Treaty Act.
Campagna, C +8 more
core +3 more sources
Impacts of the IUCN Red List of Ecosystems on conservation policy and practice
Conservation Letters, 2018 In 2014, the International Union for Conservation of Nature adopted the Red List of Ecosystems (RLE) criteria as the global standard for assessing risks to terrestrial, marine, and freshwater ecosystems.
L. Bland +14 more
semanticscholar +1 more source