Results 11 to 20 of about 39 (38)
Genetic analysis by scientists of hybridization events from 2006 to 2010 indicates one‐directional gene flow from polar bears to grizzly bears. Even if gene flow was later discovered from grizzly bears to polar bears, there is not enough time to allow for significant adaptation to a rapidly changing Arctic environment.
Craig L. Shafer
wiley +1 more source
Caribbean Marine Heatwaves, Marine Cold Spells, and Co‐Occurrence of Bleaching Events
Abstract Marine heatwaves (MHWs) and Cold Spells (marine cold spells (MCSs)) are events of extreme positive and negative temperature anomalies, that last 5 days or longer. These events have been diagnosed across oceans from sea surface temperatures (SSTs) and recognized to affect ecosystems' health worldwide.
P. Cetina‐Heredia +1 more
wiley +1 more source
Demersal fish biomass declines with temperature across productive shelf seas
Abstract Aim Theory predicts fish community biomass to decline with increasing temperature due to higher metabolic losses resulting in less efficient energy transfer in warm‐water food webs. However, whether these metabolic predictions explain observed macroecological patterns in fish community biomass is virtually unknown.
Daniel van Denderen +7 more
wiley +1 more source
Abstract Morphological similarities between skates of the genus Dipturus in the north‐eastern Atlantic and Mediterranean have resulted in longstanding confusion, misidentification and misreporting. Current evidence indicates that the common skate is best explained as two species, the flapper skate (Dipturus intermedius) and the common blue skate (D ...
Amy Garbett +20 more
wiley +1 more source
In this study we analyzed published articles reporting range shift responses to global warming in marine fish, totaling 595 depth and latitudinal responses. We identified differences in distribution shifts due to ecological variables such as niche affinity, rate of sea temperature change, and commercial exploitation, as well as methodological biases ...
Carolin Dahms, Shaun S. Killen
wiley +1 more source
Abstract Impacts of global warming and CO2‐related ocean acidification (OA) on fish reproduction may include chronic effects on gametogenesis and gamete quality, as well as acute effects on external fertilisation. Here, temperature thresholds and OA‐sensitivity of gametogenesis and fertilisation were investigated in Atlantic cod, Gadus morhua.
Flemming Dahlke +4 more
wiley +1 more source
Abstract Impacts of climate change on ocean productivity sustaining world fisheries are predominantly negative but vary greatly among regions. We assessed how 39 fisheries resources—ranging from data‐poor to data‐rich stocks—in the North East Atlantic are most likely affected under the intermediate climate emission scenario RCP4.5 towards 2050.
Olav Sigurd Kjesbu +42 more
wiley +1 more source
Capelin Size, Condition, and Abundance Through Multiple Heatwaves in Alaska
ABSTRACT Capelin (Mallotus spp.) are pelagic forage fishes that can be especially abundant in sub‐arctic marine ecosystems and are important prey for upper trophic‐level consumers. Abundance and distribution of capelin have been linked to ocean temperature, but the magnitude and directionality of thermal sensitivity can vary regionally.
Robert M. Suryan +7 more
wiley +1 more source
Climate‐linked evolution and genetics in a warming Arctic
Abstract Knowledge of evolutionary patterns and genetic variation across a species' range is important for determining conservation and management strategies. The Arctic is the fastest‐warming ecosystem on Earth and has already reached temperature increases not expected in the rest of the world until the end of the century.
L. Ruth Rivkin +12 more
wiley +1 more source
Community structure and range shifts in Arctic marine fish under climate change
Arctic marine ecosystems are rapidly transforming due to climate change. Warming temperatures and shrinking sea ice are enabling boreal fish to expand northward, possibly disturbing cold‐adapted Arctic species assemblages. Species range shifts have been documented in the Bering and Barents Seas, raising concerns about ecosystem restructuring.
Virginie Marques +7 more
wiley +1 more source

