Results 71 to 80 of about 1,284 (168)

Tracking hatchery and wild Atlantic salmon (Salmo salar) smolt during river exit and early marine migration to assess survival, predation risk and migration speed

open access: yesJournal of Fish Biology, Volume 109, Issue 4, Page 2231-2247, October 2026.
Abstract Significant declines in Atlantic salmon (Salmo salar) populations across their range have prompted an increased use of hatchery supplementation programmes to support population recovery. However, concerns persist regarding the effectiveness of these programmes due to limited understanding of how hatchery‐reared salmon perform post‐release in ...
Natalie C. Koopman   +7 more
wiley   +1 more source

Polar Sea Ice Monitoring Using HY-2B Satellite Scatterometer and Scanning Microwave Radiometer Measurements

open access: yesRemote Sensing
The Ku band microwave scatterometer (SCA) and scanning microwave radiometer (SMR) onboard HaiYang-2B (HY-2B) can simultaneously supply active and passive microwave observations over the polar region.
Tao Zeng   +4 more
doaj   +1 more source

Net Groundwater Recharge in California Occurs Primarily During Above‐Average Snowpack Years

open access: yesGeophysical Research Letters, Volume 53, Issue 18, 28 September 2026.
Abstract In a new application of GRACE and GRACE‐FO satellite observations, we estimate basin‐scale net groundwater recharge rates for the combined Sacramento, San Joaquin, and Tulare basins encompassing California's Central Valley aquifer. Net recharge is calculated as the temporal derivative of groundwater storage anomalies and compared with ...
John T. Reager   +2 more
wiley   +1 more source

The Declining Trend of Arctic Sea‐Ice Extent (1979–2025): Segmented by Abrupt Change Points

open access: yesGeophysical Research Letters, Volume 53, Issue 17, 16 September 2026.
Abstract Arctic sea‐ice extent (SIE), a high‐accuracy observable, is a key indicator for assessing sea‐ice state and its physical evolution. Extreme SIE losses thus often spark debates over potential Arctic tipping behavior and nonlinear threshold responses.
Anliang Wang
wiley   +1 more source

Climatic rainfall regime shapes energy flow, trophic structure, and secondary production in streams [PDF]

open access: yesEcology.
Abstract Changes in precipitation patterns linked to climate change have profound implications for the structuring and functioning of riverine ecosystems. This study investigates how rainfall influences secondary production by examining nine rivers across a sharp natural rainfall gradient over 3 years.
Strickland B   +10 more
europepmc   +2 more sources

Multi‐Omic Profiling Reveals Immune Cell Priming Signature Linked to Lupus Prognosis

open access: yesArthritis &Rheumatology, Volume 78, Issue 9, Page 1878-1891, September 2026.
Objective Systemic lupus erythematosus (SLE) is a multiorgan disease with widespread immune dysregulation and significant unmet clinical need. Blood‐based gene expression studies have advanced our understanding of SLE pathogenesis but may overlook critical tissue‐specific mechanisms that drive disease heterogeneity and progression.
Michael A. Smith   +23 more
wiley   +1 more source

The Early Collapse of the 2017 Lincoln Sea Ice Arch in Response to Anomalous Sea Ice and Wind Forcing

open access: yesGeophysical Research Letters, 2018
One of the most dramatic indicators of climate change is the reduction in the extent and thickness of Arctic sea ice that has resulted in an increase in wind‐driven sea ice mobility.
G. W. K. Moore, K. McNeil
doaj   +1 more source

Characteristics and growth processes of sea ice in Lutzow-Holm Bay

open access: yesAntarctic Record, 1997
Observations of multiyear land fast sea ice were made in Lutzow-Holm Bay, Antarctica over a period of two years from 1990 to 1991 to determine the snow and ice characteristics and ice growth prowth processes.
Toshiyuki Kawamura   +3 more
doaj   +1 more source

Sensitivity of Radar Altimeter Waveform to Changes in Sea Ice Type at Resolution of Synthetic Aperture Radar

open access: yesRemote Sensing, 2019
Radar altimetry in the context of sea ice has mostly been exploited to retrieve basin-scale information about sea ice thickness. In this paper, we investigate the sensitivity of altimetric waveforms to small-scale changes (a few hundred meters to about ...
Wiebke Aldenhoff   +2 more
doaj   +1 more source

Episodic warming of near‐bottom waters under the Arctic sea ice on the central Laptev Sea shelf

open access: yesGeophysical Research Letters, 2016
A multiyear mooring record (2007–2014) and satellite imagery highlight the strong temperature variability and unique hydrographic nature of the Laptev Sea.
Markus Janout   +8 more
doaj   +1 more source

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