نتایج جستجو برای: gulf of mexico origin
تعداد نتایج: 21175356 فیلتر نتایج به سال:
Two species of supralittoral Tethorchestia were reported by Bousfield (1984) to occur on the shores of the Gulf of Mexico and closely adjacent waters: T. antillensis Bousfield, 1984 from Quintana Roo, Mexico and an undescribed species, Tethorchestia sp. B of Bousfield (1984), from Florida and the U.S. Gulf coast. In this paper, we rediagnose and illustrate the former taxon based on material fro...
New shear-wave splitting measurements at permanent broadband seismic stations in the south-central United States reveal the orientation and degree of polarization of mantle fabrics, and provide constraints on models for the formation of these fabrics. For stations on the stable North American craton, correspondence between observed polarization direction of the fast wave and the trend of Proter...
A mass balance model of mercury (Hg) cycling and bioaccumulation was applied to the Gulf of Mexico (Gulf), coupled with outputs from hydrodynamic and atmospheric Hg deposition models. The dominant overall source of Hg to the Gulf is the Atlantic Ocean. Gulf waters do not mix fully however, resulting in predicted spatial differences in the relative importance of external Hg sources to Hg levels ...
We present information about new records of 11 species chondrichthyans in the southern Gulf Mexico, adding specimens and occurrence Mexican waters. The second record Bathytoshia centroura, Mustelus sinusmexicanus, Mobula hypostoma Squalus clarkae for Mexico is presented, as well marine areas Lagoon Alvarado system corresponding to Hexanchus vitulus, Heptranchrias perlo, Scyliorhinus retifer cub...
Figure 1: Benthic mat surfaces 24 Figure 2: Fatty acids in mats 25 Figure 3: Gas headspace from mat incubations 26 Figure 4: Hierarchical clustering of mat phylochip gradient fractions 27 Figure 5: Phylochip hydridization intensities from mat incubations 28 Figure 6: Recovered benthic mat plate 29 Figure 7: Isotope incorporation from mat incubations 30 Figure 8: Relative abundance of taxa occup...
The black-capped petrel Pterodroma hasitata is an Endangered seabird endemic to the western North Atlantic. Although estimated at ~1000 breeding pairs, only ~100 nests have been located 2 sites in Haiti and 3 Dominican Republic. At sea, species primarily occupies waters of Gulf Stream Atlantic Caribbean Sea. Due limited data, there currently no consensus on geographic marine range although curr...
Gulf of Mexico (Gulf) fisheries account for 41% of the U.S. marine recreational fish catch and 16% of the nation's marine commercial fish landings. Mercury (Hg) concentrations are elevated in some fish species in the Gulf, including king mackerel, sharks, and tilefish. All five Gulf states have fish consumption advisories based on Hg. Per-capita fish consumption in the Gulf region is elevated c...
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