نتایج جستجو برای: sefid gom
تعداد نتایج: 608 فیلتر نتایج به سال:
Temperature is often an important variable influencing the vertical position of fish larvae in water column. The same species may show different distributions areas with a strong near-surface seasonal thermocline compared to isothermal regions. In surface thermocline, tuna significant preference for warmer layers. Little known regarding larval distribution waters and on associated assemblages. ...
Abstract Microzooplankton mediate a critical juncture of autotrophic and heterotrophic microbial production in the water column. Taxonomic ecological work on this group has been substantial, yet few reports exist for offshore waters Gulf Mexico (GOM). This report focuses protists phylum Ciliophora collected at stations spanning continental shelf northeastern GOM. We hypothesized that patterns s...
[1] A leading hypothesis to explain abrupt climate change during the last glacial cycle calls on fluctuations in the margin of the North American Laurentide Ice Sheet (LIS), which may have routed fresh water between the Gulf of Mexico (GOM) and the North Atlantic, affecting North Atlantic Deep Water variability and regional climate. Paired measurements of dO and Mg/Ca of foraminiferal calcite f...
Using a broad-scale automated telemetry array, we explored post-fledging movements of blackpoll warblers breeding in Atlantic Canada. We sought to determine the full spatial scale of post-fledging dispersal, to assess support for three hypotheses for regional-scale post-fledging movement, and to determine whether learning influenced movement during this period. We demonstrated that both young a...
the influence of water deprivation on potted grape (vitis vinifera l.) was investigated. leaf mass area (lma) and biochemical responses, including chlorophyll, total protein, peroxidase activity, soluble carbohydrates, photosynthesis and stomatal conductance were assessed in leaves of ‘sahani’ and ‘bidane sefid’ grape cultivars subjected to progressive drought (soil water potentials of: -0.2, -...
In this study, we conducted long-term temporal and spatial observations of monthly, interannual, decadal sea surface temperature (SST) variation in the Gulf Mannar (GoM) for period from 1870 to 2018. We obtained climatological data Met Office Hadley Centre, UK. The monthly time series revealed that April August were warmest coolest months year, respectively. mean SSTs 29.85 ± 0.44 °C 27.15 0.49...
Abstract Intruding slope water is a major source of nutrients to sustain the high biological productivity in Gulf Maine (GoM). Slope intrusion into GoM affected by Stream warm-core rings (WCRs) impinging onto nearby shelf edge. This study combines long-term mooring measurements, satellite remote sensing data, an idealized numerical ocean model, and linear coastal-trapped wave (CTW) model examin...
Response: GEM is emitted from oceans due to evasion from the ocean surface. Oceans make up the largest natural source of Hg globally and includes primary emissions and emissions of previously-deposited Hg originating from natural and anthropogenic sources. GOM production over the ocean is also possible by in situ GEM oxidation involving oxidants, e.g. reactive Br (since the ocean is a major sou...
In this paper, neural network-based methods incorporating ensemble learning techniques are presented that estimate chlorophyll a (chl a) concentration in the coastal waters of the Gulf of Maine (GOM). A dataset was constructed consisting of in situ chl a measurements from the GOM matched with satellite data from the Sea-viewing Wide-Field-of-view Sensor (SeaWiFS). These data were used to develo...
We examined data from pop-up archival transmitting (PAT) tags (n = 18) to characterize aspects of vertical habitat use by blue marlin (Makaira nigricans) from the Gulf of Mexico (GOM). Two of these tags were recovered and provided fine-scale information about diving patterns and the relationship between time at depth and temperature. Similar to previous studies, blue marlin in the GOM spent mos...
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