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.
Results
Showing 1 to 20 of 36 for “"ocean warming"”.
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Ocean warming, acidification, and chemistry of the South Pacific & North Atlantic: a brachiopod investigation
Global CO2 emissions drive ocean warming and acidification. Local-level ocean data is limited, so natural archives like brachiopods are used to understand past oceanic conditions. Brachiopod shells record seawater temperatures, chemistry, and acidity. This thesis uses brachiopods from Paterson …
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Multi-stressor impacts of ocean warming and acidification on the regeneration andbiomineralisation of <i>Psammechinus miliaris</i>
Ocean warming and acidification are significant consequences of climate change<br/>that pose a major threat to marine ecosystems. These stressors can disrupt key<br/>biological processes in marine invertebrates, such as regeneration and calcification, which are vital for survival, mobility, and …
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Changing consumer strength in a changing climate
… interact is affected by abiotic conditions. Ocean warming and acidification alter the metabolic demands of organisms and the strength at which they interact with each other. The metabolic costs of changing abiotic conditions vary between interacting pairs of species, and as such, their …
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Revisiting the importance of a Southern Ocean pattern effect
The spatial pattern of surface warming determines radiative feedbacks ("pattern effect"). The seminal work of Senior & Mitchell (2000) (SM00) argued that Southern Ocean clouds set the evolution of global radiative feedbacks in time and hence, determine climate sensitivity. We revisit their argument …
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Climate change impacts on macro and micro scale interactions between a tropical herbivore and temperate kelp forests
… climate-mediated stressors, including: gradual ocean warming, an increase in the frequency and intensity of marine heatwaves (MHWs) and changes to ocean circulation such as the strengthening of western boundary currents. These stressors not only directly affect individual species but also …
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Ocean Acidification and Seasonal Temperatures Counter Positive Novel Species Interaction and Warming Effects on Tropicalising Temperate Fish Communities
Anthropogenic warming has facilitated the redistribution of species globally. Many tropical species have shifted their ranges poleward either to escape thermally unsuitable conditions or to invade previously inaccessible temperate environments. Climate-driven species redistributions have …
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Physiological effects of climate change and estimations of carbon standing stock of southern Salish Sea kelps
… in this region. While the negative effects of ocean warming on kelps are well documented, the effects of ocean acidification are less well understood; increased pCO2 may help ameliorate some of the negative effects of warming and influence kelp resilience in future oceans. The first chapter of …
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INDIVIDUAL AND ENVIRONMENTAL EFFECTS ON LIFE HISTORY TRAIT EXPRESSION IN NAZCA BOOBIES
… key prey species (sardines, Sardinops sagax), by ocean warming, from the foraging envelope. Breeding success was dramatically reduced when sardines were not available. Adult female survival increased, but not enough to keep the population growth rate from falling below 1, indicating a shrinking …
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Sea of change
The Gulf of Maine is warming at a faster rate than 99.9 percent of the world ocean, a trend with uncertain implications for the last great maritime fishery: American lobster. Every year, fishermen, scientists, and managers wait to see if the fishery reverses its fantastic growth, which has been a …
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Predicting the impact of future climate on ecologically important macroalgae
… for atmospheric CO2. Water acidification and ocean warming caused by anthropogenic activities are affecting many marine flora and fauna, potentially impacting the physical and chemical performance of macroalgae and the consumption rates of associated herbivores. Many studies have focused on …
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Biophysical interactions in the Iceland Basin
… biological carbon pump anywhere in the world oceans. Furthermore, the link between primary productivity and herbivory by the calanoid copepod, Calanus finmarchicus provides the trophic link between primary producers and the important commercial fishery for Atlantic Cod. However, one result of …
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Addressing the impact of the EU CFP landing obligation on the northern North Sea ecosystem and Shetland fisheries in a changing climate.
… area; and how impacts may be exacerbated under ocean warming. The model focusses on catch, discards and diets within ICES area IVa to represent specific mixed fisheries surrounding the Shetland Isles. The model uses stock assessments and North Sea International Bottom Trawl Survey (NS IBTS) …
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A scientific framework for evaluating coral reef resilience to climate change
The 21𝑠𝑡 century warming and acidification of tropical oceans will impact the structure and function of coral reef ecosystems. Consequently, conservation efforts are increasingly focused on identifying and protecting reef communities that demonstrate resilience to these changes. In this thesis, I …
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A scientific framework for evaluating coral reef resilience to climate change
The 21st century warming and acidification of tropical oceans will impact the structure and function of coral reef ecosystems. Consequently, conservation efforts are increasingly focused on identifying and protecting reef communities that demonstrate resilience to these changes. In this thesis, I …
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Late Quaternary ice-ocean interactions in central West Greenland
… the possible impacts of future global warming, including ice sheet contribution to global sea-level rise and perturbations to ocean circulation. Recent acceleration, thinning and retreat of major tidewater glaciers in Greenland and Antarctica during the past two decades demonstrate the …
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Using Silicon Isotopes to Trace the Biogenic Silica in the Southern Ocean
… climate change. The Si cycle in the Southern Ocean was investigated using an isotopic approach in incubation experiments and the natural environment. This study provides new measurements of the Si isotope composition of biogenic silica in a natural phytoplankton community and for multiple …
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Using Silicon Isotopes to Trace the Biogenic Silica in the Southern Ocean
… climate change. The Si cycle in the Southern Ocean was investigated using an isotopic approach in incubation experiments and the natural environment. This study provides new measurements of the Si isotope composition of biogenic silica in a natural phytoplankton community and for multiple …
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How marine organisms cope with changing climate
As anthropogenic CO2 levels continue to rise, the oceans are becoming warmer and more acidic. Organisms need to adjust to such environmental changes and display a variety of mechanisms to maintain their fitness in novel conditions. These adjustments can operate at various levels of biological …
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The direct implications of warming on the phenotype and underlying functional traits of marine phytoplankton
Marine phytoplankton mediate oceanic biogeochemical cycling by linking cellular metabolism with many elemental fluxes including C, N, P and Si. These elemental transformations are physiologically regulated processes that are influenced by phytoplankton phenotypes that change over different spatial …
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SENSITIVITY AND RESILIENCE OF CNIDARIAN EARLY LIFE PROCESSES TO ANTHROPOGENIC CLIMATE CHANGE
Anthropogenic climate change stressors including ocean warming, acidification, and deoxygenation have decimated populations of cnidarians (e.g., corals and sea anemones) on a global scale over recent decades. Conserving and restoring cnidarian populations requires a thorough understanding of these …
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