Not exact matches
For example, reductions in seasonal sea ice cover and higher surface
temperatures may open up new habitat in polar regions for some important fish species, such as cod, herring, and pollock.128 However, continued presence of cold bottom -
water temperatures on the Alaskan continental shelf could limit northward migration into the northern Bering Sea and Chukchi Sea off northwestern Alaska.129, 130 In addition, warming may cause reductions in the abundance of some species, such as pollock, in their current
ranges in the Bering Sea131and reduce the health of juvenile sockeye salmon, potentially resulting in decreased overwinter survival.132 If
ocean warming continues, it is unlikely that current fishing pressure on pollock can be sustained.133 Higher
temperatures are also likely to increase the frequency of early Chinook salmon migrations, making management of the fishery by multiple user groups more challenging.134
Ocean acidification, rising ocean temperatures, declining sea ice, and other environmental changes interact to affect the location and abundance of marine fish, including those that are commercially important, those used as food by other species, and those used for subsistence.16, 17,18,122,19,20,21 These changes have allowed some near - surface fish species such as salmon to expand their ranges northward along the Alaskan coast.124, 125,126 In addition, non-native species are invading Alaskan waters more rapidly, primarily through ships releasing ballast waters and bringing southerly species to Alaska.5, 127 These species introductions could affect marine ecosystems, including the feeding relationships of fish important to commercial and subsistence fishe
Ocean acidification, rising
ocean temperatures, declining sea ice, and other environmental changes interact to affect the location and abundance of marine fish, including those that are commercially important, those used as food by other species, and those used for subsistence.16, 17,18,122,19,20,21 These changes have allowed some near - surface fish species such as salmon to expand their ranges northward along the Alaskan coast.124, 125,126 In addition, non-native species are invading Alaskan waters more rapidly, primarily through ships releasing ballast waters and bringing southerly species to Alaska.5, 127 These species introductions could affect marine ecosystems, including the feeding relationships of fish important to commercial and subsistence fishe
ocean temperatures, declining sea ice, and other environmental changes interact to affect the location and abundance of marine fish, including those that are commercially important, those used as food by other species, and those used for subsistence.16, 17,18,122,19,20,21 These changes have allowed some near - surface fish species such as salmon to expand their
ranges northward along the Alaskan coast.124, 125,126 In addition, non-native species are invading Alaskan
waters more rapidly, primarily through ships releasing ballast
waters and bringing southerly species to Alaska.5, 127 These species introductions could affect marine ecosystems, including the feeding relationships of fish important to commercial and subsistence fisheries.
Chris's figure (for the change in atmospheric CO2 per degree change in
temperature) is within the
range calculated for
ocean water temperatures in 1999 by J. Ahlbeck, who concluded: ``... a
temperature increase of one degree celsius will increase the atmospheric concentration of carbon dioxide in the
range of 8 ppm (150 m layer) to 18 ppm (600 m layer).
Lansner and Pepke Pedersen (2018) point out that, due to the divergent rates of warming and cooling for land vs.
ocean water, there is a significant difference in the
range of
temperature for the regions of the world influenced by their close proximity to
oceans and coastal wind currents (
ocean air affected, or OAA) and the inland regions of the world that are unaffected by
ocean air effects and coastal wind because they are sheltered by hills and mountains or located in valleys (
ocean air sheltered, or OAS).
However, the hydrate stability zone thickness decreases to zero near the top of its depth
range in the
ocean, and an increase in
water column
temperature there could eliminate the stability zone entirely, potentially providing an easier pathway for methane to reach the sea floor.
Coral reefs are threatened by rising
water temperatures,
ocean acidification, and sea - level rise.3, 5 Coral reefs typically live within a specific
range of
temperature, light, and concentration of carbonate in seawater.6 When increases in
ocean temperature or ultraviolet light stress the corals, they lose their colorful algae, leaving only transparent coral tissue covering their white calcium - carbonate skeletons.6 This phenomenon is called coral bleaching.
I can only list a few regular «goings on'that I KNOW affect sea level; I'm certain that there are others: Change in overall
temperature of the
oceans (a few millidegrees / mm), plate tectonics, slit from rivers, erosion of seashores, extraction of ground
water which ultimately returns to the
oceans, marine life and its products building up the
ocean floors, melting land ice, undersea discharges of a variety of «stuff» from literally hundreds of thousands of sources, often at
temperatures in the 1 - 2 thousand degree
range, which we are only now beginning to notice, wind carrying dust from the land and dropping it on the
ocean.