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 63 for “"mass extinction"”.
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My responsibility in the face of mass extinction
Extinction is the “irreversible condition of a species or other group of organisms having no living representatives in the wild, which follows the death of the last surviving individual of that species or group” (Hine and Martin 2015g, para. 1). Mass extinctions are extinctions of the greatest …
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Palaeoecology of the late Permian mass extinction and subsequent recovery
… Permian is associated with the most severe mass extinction event of the Phanerozoic, and the expansion of hypoxic and anoxic conditions into shallow shelf settings. Our understanding of the magnitude, pattern and duration of the extinction event and subsequent recovery remains equivocal. …
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Money, Work, and Mass Extinction: Transformational Degrowth and the Job Guarantee
… The third essay argues that the crisis of mass extinction is equal parts human and ecological. The Anthropocene is evidence of humankind’s capacity to change the world. However, the rapid extension of market logic and money value during the neoliberal era is generating forms of alienation …
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Multi-proxy palaeoclimate reconstruction of the permian-triassic mass extinction event
The Permian/Triassic (P/Tr) boundary is widely assumed to have been a time of extreme environmental upheaval and change. In the terrestrial realm, a negative anomaly in 813C isotope values has been reported from organic carbon in Antarctica, Australia, India and Madagascar, and from marine …
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Effects of the late Permian mass extinction on chondrichthyan palaeobiodiversity and distribution patterns
The Late Permian mass extinction occurring at 252.6 ± 0.2 Ma is the most severe Phanerozoic extinction event and was preceded and followed by additional disturbances. Patterns and processes of extinction and recovery of marine vertebrates have been little studied compared to marine invertebrates. …
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The effects of mass extinction on escalation of the naticid gastropod predator-prey system at the Eocene-Oligocene
… escalation cycles are punctuated by periods of mass extinction. The periods of mass extinction would preferentially eliminate the highly escalated prey and, therefore, a new cycle would be initiated. </p><p> In this study the Kelley-Hansen hypothesis was tested at the Eocene Oligocene extinction …
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Marine Deoxygenation Predates the End-Triassic Mass Extinction Within the Equatorial Panthalassa and its Influence on Marine Ecosystems Before the Biotic Crisis
The end-Triassic Mass Extinction (ETME) was one of the "Big 5" mass extinctions of the Phanerozoic and is thought to have been caused by a series of environmental changes triggered by the emplacement of the Central Atlantic Magmatic Province (CAMP). While the overall driver of the ETME is …
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NEARING THE END: REEF BUILDING CORALS AND BIVALVES IN THE LATE TRIASSIC AND COMPARING CORALS AND BIVALVES BEFORE AND AFTER THE END-TRIASSIC MASS EXTINCTION USING A TAXONOMIC DATABASE
… past is the key to the present. The five great extinction events are some of the key events that can help us to understand how changes in climate and sea chemistry can cause great changes in the ecology of our planet. Today the increase in atmospheric CO2 is causing ocean acidification, which …
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NEARING THE END: REEF BUILDING CORALS AND BIVALVES IN THE LATE TRIASSIC AND COMPARING CORALS AND BIVALVES BEFORE AND AFTER THE END-TRIASSIC MASS EXTINCTION USING A TAXONOMIC DATABASE
… past is the key to the present. The five great extinction events are some of the key events that can help us to understand how changes in climate and sea chemistry can cause great changes in the ecology of our planet. Today the increase in atmospheric CO2 is causing ocean acidification, which …
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High-precision U/Pb geochronology of large igneous provinces and mass extinctions : testing coincidence and causation
The history of life on Earth is punctuated by mass extinction, the cause of which has often been attributed to rapid changes in global climate and/or ocean chemistry that are inferred to accompany the eruption of large igneous provinces (LIPs). Implicating LIP eruptions as the trigger of the …
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The Chicxulub impact event and the environmental catastrophe at the end of the Cretaceous Period
… affected the evolution of life on Earth. The mass extinction event at the end of the Cretaceous Period, which includes the demise of the dinosaurs, has been linked to the large impact event that produced the Chicxulub structure located in the Yucatán Peninsula, Mexico. Unfortunately, the …
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Temperature trends of the Late Cambrian through the Middle Ordovician : implications for Ordovician climate and biodiversification
… Event (GOBE)--and the second-largest mass extinction of the Phanerozoic--the end Ordovician mass extinction. Climate change has been invoked as a contributing factor to both events. Much research has focused on the end Ordovician extinction and thus, paleotemperatures of the last 15 …
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The historical biogeography of terrestrial gamebirds (Aves: Galliformes)
… originated only after the Cretaceous-Tertiary mass extinction event.
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The Pareiasaur Elginia from Elgin, north east Scotland, and the late Permian extinction event
The end-Permian mass extinction of marine invertebrates and non-marine tetrapods is examined. Fauna!, lithostratigraphical and geochemical data indicate that the mass extinction was a prolonged, gradual event, and was not initiated or accelerated by a catastrophic mechanism. The cause of the …
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Volatiles as a link between planetary interiors and the environment
… Siberian Traps eruption and end-Permian mass extinction offer an ideal test case to study the interactions between magmatism and climate. In this thesis, I use experimental petrology, numerical modeling, geochemical measurements, and field observations to investigate the petrologic …
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Quantifying the Biogeochemical Impact of Land Plant Expansion in the Mid Devonian and Implications in Marine Anoxic Events
… about the causes of marine eutrophication and mass extinctions during the Devonian. To gain insight into the transport of P between terrestrial and marine domains, presented here are geochemical records from a survey of Middle and Late Devonian lacustrine and near lacustrine sequences that span …
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The Strangelove Ocean
… are also poems that deal with climate change and mass extinction, an homage to the trauma that we inflict upon the world and its far-reaching consequences. “Strangelove ocean” is a scientific term used to refer to the post-Permian extinction landscape—a desolate ocean in which over 95% of marine …
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The lifestyle of Antarcticavis capelambensis through a study of Polar section modulus
… did not survive the Cretaceous-Paleogene (K-Pg) mass extinction event. Adding to this phenomenon are the Late Cretaceous Hesperornithiformes, which are a group of foot-propelled divers that, for the most part, have no wing elements. The hesperornithiforms also failed to survive the K-Pg mass …
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Evolution in biological radiations; insights from the Triassic archosaur radiation
… radiated following the end-Permian mass extinction and their lineage diversification through the Early to Late Triassic is well documented in the literature. Prior to the end-Permian mass extinction, these reptiles were both species poor and ecologically limited, but by the Late …
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A new focus for education? Nature connection as a goal for all education: Theoretical, research and practical perspectives
Ecological catastrophe, including the Holocene mass extinction, and the climate crisis demand that we find new ways to approach the human-nature relationship. An effective way to enact positive change is through education. Nature connection describes a positive relationship with the natural world: …
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