Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 35 for “"Freshening"”.
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Economic Optima in Freshening Dairy Cows in Northeastern Illinois
Made available in DSpace on 2014-12-04T21:48:10Z (GMT). No. of bitstreams: 1 6000246.pdf: 6467020 bytes, checksum: 56ce723e9f6c0dbf09a71193e0e7b8cc (MD5) Previous issue date: 1959
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Evaluating the resilience of Antarctic echinoderms to Southern Ocean freshening: Short- and long-term responses
… ocean acidification, reduced sea-ice cover, and freshening—the reduction in salinity caused by freshwater input. Salinity is a crucial environmental factor that affects the development, growth, reproduction, and survival of aquatic organisms. While the effects of warming, acidification and loss …
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Investigating Nekton Response to Changing Salinities in the Mississippi Sound: An Experimental and Statistical Approach
… for its commercial fisheries. Previous freshening events linked to the Bonnet Carré Spillway, a Mississippi River flood diversion structure, proved catastrophic for oyster populations in the Mississippi Sound, but effects on mobile fish and shellfish species are not well-defined. The …
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Evaluation of the Impacts of De-Icing Salts on the Performance of Bioretention Media in Retaining Phosphorus From Urban Stormwater
… P release for all columns occurred during the freshening period following the switch from high to low salt influent. High porewater pH (> 9) observed during the freshening period may be causing the high P release. This study provides new insights needed to improve year-round P retention in …
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Use of sire evaluations for first, all, and later lactations to predict lifetime profit functions of individual daughters
… same herd and calving in the same year of first freshening.
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Investigating the Response of the Eastern Oyster (Crassostrea virginica) to Low Dissolved Oxygen Conditions
… biomass, size, and condition during these freshening events. Under controlled laboratory experiments, this thesis investigated 1) the response of oysters to microxic, hypoxic, and normoxic conditions 2) the response of oysters to combined hypoxia and low salinity conditions, and 3) the …
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Abrupt climate change in the Atlantic Ocean during the last 20,000 years : insights from multi-element analysis of benthic and planktic foraminifera and coupled OA-GCM
… evidence of open-ocean cooling (nearly 2⁰C) and freshening during the 8.2 kyr event, and suggest similar conditions at 9.3 ka.
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Air-ice-ocean interactions under a summer Arctic cyclone: observations from two ice-tethered profilers
… was a larger freshwater input. Overall, ocean freshening corresponded to total ice melt of 37cm for ITP113 and 14cm for ITP114. The freshwater can be attributed to an estimated 4-7 cm of precipitation, and 2-4 cm of melt due to ocean heat entrainment, with the remainder inferred to be from …
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The Effect of Inbreeding on Lifetime Performance of Dairy Cattle
… days, -6.7 days and -5.1 days for age at first freshening (AFF), days of productive life (DPL) and days in milk (TDIM), respectively. Inbreeding decreased first lactation mature equivalent milk, fat, and protein by 23.7 kg, .85 kg, and .76 kg, respectively and lifetime milk, fat, and protein …
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Evolution of the Irminger Current anticyclones in the Labrador Sea from hydrographic data
… heat loss and to contribute to the seasonal freshening of the Labrador Sea, is thought to be provided by coherent long-lived anticyclonic eddies shed by the Irminger Current. The population, some properties, rates and direction of propagation of these anomalies are known but the evolution and …
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Changes in Antarctic Bottom Water Formation During Interglacial Periods
… density stratification due to surface water freshening. Any reduction in AABW formation has important implications for global climate as AABW plays a vital role in the cycling of carbon in the world’s ocean. The primary question this study seeks to answer is do these AABW reductions occur …
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Evolution of the Irminger Current anticyclones in the Labrador Sea from hydrographic data
… heat loss and to contribute to the seasonal freshening of the Labrador Sea, is thought to be provided by coherent long-lived anticyclonic eddies shed by the Irminger Current. The population, some properties, rates and direction of propagation of these anomalies are known but the evolution and …
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Invasive species: fundamental and applied science
… 2, I use RIP to experimentally assess how sea freshening may affect the impacts of the emerging amphipod IAS, Pontogammarus maeoticus, relative to an established IAS, Gammarus tigrinus, and a trophically analogous native, Gammarus salinus, in the Baltic Sea. I show that this often-overlooked …
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Inversion Analysis of Time-Domain Controlled-Source Electromagnetic Data to Characterize Offshore Freshened Groundwater in the Canterbury Bight, New Zealand, and Offshore Maltese Islands
… pore-water salinity distributions indicating a freshening trend toward the coast within a permeable sand layer 40–150 m below the seafloor. In offshore Gozo, inversion results integrated with seismic reflection data reveal resistive anomalies within the Lower Coralline Limestone formation at …
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Climate and Hydrographic Variability In the Indo-Pacific Warm Pool Over the Past 26,000 Years
… Intertropical Convergence Zone. A cooling and freshening trend occurs from 10,000 to 2,000 years before present. Over the past 2,000 years, a high resolution analysis shows pronounced changes in sea surface temperature in concert with variations in Northern Hemisphere air temperature. …
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Examining the Impact of Bonnet Carré Spillway Opening on Hypoxia Evolution in the Mississippi Sound and Bight: A 2019 Case Study
… and strengthened two-layer circulation, rapidly freshening surface waters while isolating oxygen-poor bottom layers. Biogeochemical responses showed increased nitrate import from the shelf and greater export of ammonium, detritus, and phytoplankton from the Sound to the shelf, reflecting …
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Antarctic climate: ocean fluxes and variability
… throughout the data set. A<br/>warming and freshening signal in the surface waters from 1997-2005 to the north of the<br/>Sub-Antarctic Front along SR01b is also presented.<br/><br/>The major part of this work is based around an inverse study of the Southern Ocean that<br/>combines the WOCE …
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On the dynamics of shallow water currents in Massachusetts Bay and on the New England continental shelf
… observations made in Massachusetts Bay show that freshening from the spring runoff dominates the low frequency currents and the hydrography of the Bay in the spring months. The major freshening is attributed to the Merrimack River which empties into the Gulf of Maine 30 km to the north of the Bay; …
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The response of ocean salinity patterns to climate change: implications for circulation
… Atlantic salinity response generally shows freshening at the surface, but is sensitive to the transport of anomalously salty water from the subtropics, a largely eddy-driven process. As CMIP5 models use a range of eddy parameterizations, this is likely a source of uncertainty in the salinity …
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Investigating virus-host interactions in a changing Arctic Ocean
… rate, with sea ice loss, warming and freshening affecting microbial community dynamics, including primary productivity. In the Arctic, primary production is driven by eukaryotic phytoplankton and one picoeukaryote in particular, Micromonas polaris, is ecologically dominant. Basic …
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