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Browsing by Subject "Geosciences, Multidisciplinary"
Now showing items 1-20 of 24
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A baseline paleoecological study for the Santa Cruz Formation (late–early Miocene) at the Atlantic coast of Patagonia, Argentina
(Palaeogeography, Palaeoclimatology, Palaeoecology, 2010-06)Coastal exposures of the Santa Cruz Formation (late-early Miocene, southern Patagonia, Argentina) between the Coyle and Gallegos rivers have been a fertile ground for recovery of Miocene vertebrates for more than 100 years. ... -
A formal Anthropocene is compatible with but distinct from its diachronous anthropogenic counterparts: a response to W.F. Ruddiman’s ‘three flaws in defining a formal Anthropocene’
(Progress in Physical Geography, 2019-06-01)© The Author(s) 2019. We analyse the ‘three flaws’ to potentially defining a formal Anthropocene geological time unit as advanced by Ruddiman (2018). (1) We recognize a long record of pre-industrial human impacts, but note ... -
An improved approach to age-modeling in deep time: Implications for the Santa Cruz Formation, Argentina
(Bulletin of the Geological Society of America, 2020-01-01)© 2019 Geological Society of America. Accurate age-depth models for proxy records are crucial for inferring changes to the environment through space and time, yet traditional methods of constructing these models ... -
Biodiversity loss from deep-sea mining
(Nature Geoscience, 2017-07-01) -
Designing a network of critical zone observatories to explore the living skin of the terrestrial Earth
(Earth Surface Dynamics, 2017-12-18)The critical zone (CZ), the dynamic living skin of the Earth, extends from the top of the vegetative canopy through the soil and down to fresh bedrock and the bottom of the groundwater. All humans live in and depend on the ... -
Distinct contributions of eroding and depositional profiles to land-atmosphere CO <inf>2</inf> exchange in two contrasting forests
(Frontiers in Earth Science, 2019-02-26)© 2019 Billings, Richter, Ziegler, Prestegaard and Wade. Lateral movements of soil organic C (SOC) influence Earth's C budgets by transporting organic C across landscapes and by modifying soil-profile fluxes of CO 2 . We ... -
Habitat fragmentation and biodiversity conservation: key findings and future challenges
(Landscape Ecology, 2016-02-01) -
Ideas and perspectives: Strengthening the biogeosciences in environmental research networks
(Biogeosciences, 2018-08-15)© Author(s) 2018. Long-term environmental research networks are one approach to advancing local, regional, and global environmental science and education. A remarkable number and wide variety of environmental research networks ... -
Inorganic carbon speciation and fluxes in the Congo River
(Geophysical Research Letters, 2013-02-16)Seasonal variations in inorganic carbon chemistry and associated fluxes from the Congo River were investigated at Brazzaville-Kinshasa. Small seasonal variation in dissolved inorganic carbon (DIC) was found in contrast with ... -
Iron Age landscape changes in the Benoué River Valley, Cameroon
(Quaternary Research (United States), 2019-09-01)Copyright © 2019 University of Washington. Published by Cambridge University Press. The introduction of agriculture is known to have profoundly affected the ecological complexion of landscapes. In this study, a rapid transition ... -
Mammalian faunas, ecological indices, and machine-learning regression for the purpose of paleoenvironment reconstruction in the Miocene of South America
(Palaeogeography, Palaeoclimatology, Palaeoecology, 2019-03-15)© 2019 Elsevier B.V. Reconstructing paleoenvironments has long been considered a vital component for understanding community structure of extinct organisms, as well as patterns that guide evolutionary pathways of species ... -
Mercury Sourcing and Sequestration in Weathering Profiles at Six Critical Zone Observatories
(Global Biogeochemical Cycles, 2018-10-01)©2018. American Geophysical Union. All Rights Reserved. Mercury sequestration in regolith (soils + weathered bedrock) is an important ecosystem service of the critical zone. This has largely remained unexplored, due to the ... -
Modifications of 2:1 clay minerals in a kaolinite-dominated Ultisol under changing land-use regimes
(Clays and Clay Minerals, 2018-02-01)© 2018, Clay Minerals Society. All rights reserved. Chemical denudation and chemical weathering rates vary under climatic, bedrock, biotic, and topographic conditions. Constraints for landscape evolution models must consider ... -
Persistent anthropogenic legacies structure depth dependence of regenerating rooting systems and their functions
(Biogeochemistry, 2020-02-01)© 2020, Springer Nature Switzerland AG. Biotically-mediated weathering helps to shape Earth’s surface. For example, plants expend carbon (C) to mobilize nutrients in forms whose relative abundances vary with depth. It thus ... -
Postseismic coastal development in Aceh, Indonesia - Field observations and numerical modeling
(Marine Geology, 2017-10-01)We model postseismic changes to the shoreline of West Aceh, Indonesia, a region largely affected by the December 2004 Sumatra-Andaman earthquake and ensuing Indian Ocean tsunami, using a cross-shore morphodynamic model. ... -
Quantification of Mixed-Layer Clays in Multiple Saturation States Using NEWMOD2: Implications for the Potassium Uplift Hypothesis in the SE United States
(Clays and Clay Minerals, 2020-02-01)© 2020, The Clay Minerals Society. Quantification of mineral assemblages in near-surface Earth materials is a challenge because of the often abundant and highly variable crystalline and chemical nature of discrete clay minerals. ... -
Quantification of Peat Thickness and Stored Carbon at the Landscape Scale in Tropical Peatlands: A Comparison of Airborne Geophysics and an Empirical Topographic Method
(Journal of Geophysical Research: Earth Surface, 2019-12-01)©2019. The Authors. Peatlands play a key role in the global carbon cycle, sequestering and releasing large amounts of carbon. Despite their importance, a reliable method for the quantification of peatland thickness and volume ... -
Stratigraphic and Earth System approaches to defining the Anthropocene
(Earth's Future, 2016-08-01)© 2016 The Authors. Stratigraphy provides insights into the evolution and dynamics of the Earth System over its long history. With recent developments in Earth System science, changes in Earth System dynamics can now be ... -
Submarine landslide geomorphology, US continental slope
(Marine Geology, 2000-09-15)The morphometric analysis of submarine landslides in four distinctly different tectonic environments on the continental slopes of Oregon, central California, Texas, and New Jersey provides useful insight into submarine process, ... -
The Anthropocene: A conspicuous stratigraphical signal of anthropogenic changes in production and consumption across the biosphere
(Earth's Future, 2016-03-01)© 2016 The Authors. Biospheric relationships between production and consumption of biomass have been resilient to changes in the Earth system over billions of years. This relationship has increased in its complexity, from ...
