Results 111 to 120 of about 123,794 (282)

The Importance of Sea Ice to Antarctic Ice Shelves

Frontiers for Young Minds
Ice shelves are important because they act as a dam that regulates the amount of land ice that flows into the ocean. This means if Antarctica’s ice shelves were to break up, more ice would be melted into the ocean and global sea level would rise at a much faster rate.
Bertie W. J. Miles, Jennifer F. Arthur, Rodrigo Gomez-Fell   +2 more
openaire   +1 more source

Comprehensive and representative conservation planning for biodiversity of ice‐free Antarctica

Conservation Biology, EarlyView.
Abstract Antarctica is designated as a natural reserve devoted to peace and science, with Antarctic Specially Protected Areas (ASPAs) serving as the primary instrument for area‐based biodiversity protection. However, the existing ASPA network lacks the comprehensiveness and representativeness required under Annex V, Article 3(2), of the Madrid Protocol.
Wen Wen, Jasmine R. Lee, Justine D. Shaw, Kerrie A. Wilson   +3 more
wiley   +1 more source

Triple Oxygen Isotope Compositions of Isotopic Reference Waters: Implications for VSMOW‐Scale and VSMOW–SLAP‐Scale Δ′17O Calibration

Geostandards and Geoanalytical Research, EarlyView.
Key Points Triple oxygen isotope ratios of two primary (VSMOW, SLAP) and twelve secondary water isotopic reference materials were precisely measured using BrF5 fluorination‐IRMS. The measured Δ'17OVSMOW value for SLAP (34 ± 6 per meg) demonstrates that VSMOW‐SLAP normalisation ensures interlaboratory comparability, but introduces systematic offsets for
Ryoji Tanaka, Andreas Pack, Tyler B. Coplen   +2 more
wiley   +1 more source

Rapid Decline of Total Antarctic Sea Ice Extent during 2014–16 Controlled by Wind-Driven Sea Ice Drift

Journal of Climate, 2019
Between 2014 and 2016 the annual mean total extent of Antarctic sea ice decreased by a record, unprecedented amount of 1.6 × 106 km2, the largest in a record starting in the late 1970s. The mechanisms behind such a rapid decrease remain unknown.
Zhaomin Wang, J. Turner, Yang Wu, Chengyan Liu   +3 more
semanticscholar   +1 more source

Divergent exploratory‐avoidant behavioural strategies may drive niche differentiation in juvenile Antarctic fishes

Journal of Fish Biology, EarlyView.
Abstract We used an ecological niche theory framework integrating physiological and behavioural ecology to understand interspecific differentiation of juveniles of four Antarctic fishes: Trematomus bernacchii, Trematomus pennellii, Trematomus nicolai and Pagothenia borchgrevinki.
Amanda J. Frazier, Andrew W. Naslund, Milica Mandic, Kenneth W. Zillig, Bryant C. Siu, Anne E. Todgham   +5 more
wiley   +1 more source

Orchid genome evolution and trait innovation

Journal of Integrative Plant Biology, EarlyView.
Orchids became one of the world's most diverse plant groups through genome‐driven innovations, unique relationships with fungi and pollinators, and remarkable adaptability. This review explains the origins of orchids and the evolution of their distinctive life forms, flowers, and ecological strategies and highlights promising directions for future ...
Meng‐Yao Zeng, Cheng‐Yuan Zhou, Linying Wang, Jie Gao, Weilun Yin, Dong‐Hui Peng, Siren Lan, Feng‐Xi Yang, Zhong‐Jian Liu   +8 more
wiley   +1 more source

Advanced aqueous alteration in primitive meteorites: Micro‐ to nanoscale studies of CR1 iron sulfides

Meteoritics &Planetary Science, EarlyView.
Abstract This study documents micro‐ to nanoscale observations of primary nebular and secondary parent body iron sulfides in the CR1 GRO 95577. Despite the extensive alteration of the bulk sample, some primary sulfides managed to avoid alteration, having originally formed in the solar nebula during chondrule formation by either fission‐sulfidization or
S. A. Singerling
wiley   +1 more source

Causes of the Abrupt and Sustained 2016–2023 Antarctic Sea‐Ice Decline: A Sea Ice–Ocean Model Perspective

Geophysical Research Letters
Antarctic sea ice, which undergoes large seasonal changes and plays a crucial role in the global climate system, showed a gradual increasing trend in its extent from the late 1970s to 2015 but experienced a sharp decline in 2016, followed by record lows ...
K. Kusahara, H. Tatebe
doaj   +1 more source

LifeMet: Report on the 2024–2025 meteorite recovery expedition in Dronning Maud Land, Antarctica for the study of microbe–meteorite interactions

Meteoritics &Planetary Science, EarlyView.
Abstract Since the discovery of nine meteorites near the Yamato mountains in 1969, Antarctica has been recognized as a superb location for meteorite recovery. While Antarctic recovery expeditions prioritize meteorite preservation for mineralogical and planetary studies, meteorites are not typically collected for biological applications.
Rachael Lappan, Rachel S. Kirby, Andrew G. Tomkins   +2 more
wiley   +1 more source

Raman analysis of organic refractory materials after energetic processing: Evidence for amorphous carbon on TNOs and comets

Meteoritics &Planetary Science, EarlyView.
Abstract Amorphous carbon (αC) is found in various extraterrestrial particles, including those thought to originate from the outer Solar System. αC can form through two main processes involving C‐rich materials: exposure to energetic charged particles and thermal processing.
M. Germanà, A. Vyjidak, G. A. Baratta, B. M. Giuliano, R. G. Urso, C. Scirè, D. Fulvio, T. Grassi, P. Jusko, P. Caselli, M. E. Palumbo   +10 more
wiley   +1 more source