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Tectonic influence on axial-transverse sediment routing in the Denver Basin

Detrital zircon U-Pb and (U-Th)/He ages from latest Cretaceous–Eocene strata of the Denver Basin provide novel insights into evolving sediment sourcing, recycling, and dispersal patterns during deposition in an intracontinental foreland basin. In total, 2464 U-Pb and 78 (U-Th)/He analyses of detrital zircons from 21 sandstone samples are presented from outcrop and drill core in the...
Authors
Glenn R. Sharman, Daniel F. Stockli, Peter Flaig, Robert G.H. Raynolds, Marieke Dechesne, Jacob A. Covault

How will baseflow respond to climate change in the Upper Colorado River Basin?

Baseflow is critical to sustaining streamflow in the Upper Colorado River Basin. Therefore, effective water resources management requires estimates of baseflow response to climatic changes. This study provides the first estimates of projected baseflow changes from historical (1984 – 2012) to thirty-year periods centered around 2030, 2050, and 2080 under warm/wet, median, and hot/dry...
Authors
Olivia L. Miller, Matthew Miller, Patrick C. Longley, Jay R. Alder, Lindsay A. Bearup, Tom Pruitt, Daniel K. Jones, Annie L. Putman, Christine A. Rumsey, Tim S. McKinney

Rapa Nui (Easter Island) Rano Raraku crater lake basin: Geochemical characterization and implications for the Ahu-Moai Period

Rano Raraku, the crater lake constrained by basaltic tuff that served as the primary quarry used to construct the moai statues on Rapa Nui (Easter Island), has experienced fluctuations in lake level over the past centuries. As one of the only freshwater sources on the island, understanding the present and past geochemical characteristics of the lake water is critical to understand if the...
Authors
Elana Argiriadis, Mara Bortolini, Natalie M. Kehrwald, Marco Roman, Clara Turetta, Shahpara Hanif, Evans Osayuki Erhendi, José Miguel Ramirez Aliaga, David B. McWethy, Amy E. Myrbo, Aníbal Pauchard, Carlo Barbante, Dario Battistel

Lessons learned from development of natural capital accounts in the United States and European Union

The United States and European Union (EU) face common challenges in managing natural capital and balancing conservation and resource use with consumption of other forms of capital. This paper synthesizes findings from 11 individual application papers from a special issue of Ecosystem Services on natural capital accounting (NCA) and their application to the public and private sectors in...
Authors
Kenneth J. Bagstad, Jane Carter Ingram, Carl D. Shapiro, Alessandra La Notte, Joachim Maes, Sara Vallecillo, Clyde F. Casey, Pierre D. Glynn, Mehdi Pourpeikari Heris, Justin C. Johnson, Chris Lauer, John Matuszak, Kirsten L. L. Oleson, Stephen M. Posner, Charles Rhodes, Brian Voigt

A global ecological classification of coastal segment units to complement marine biodiversity observation network assessments

A new data layer provides Coastal and Marine Ecological Classification Standard (CMECS) labels for global coastal segments at 1 km or shorter resolution. These characteristics are summarized for six US Marine Biodiversity Observation Network (MBON) sites and one MBON Pole to Pole of the Americas site in Argentina. The global coastlines CMECS classifications were produced from a...
Authors
Roger Sayre, Kevin Butler, Keith Van Graafeiland, Sean P. Breyer, Dawn J. Wright, Charlie Frye, Deniz Karagulle, Madeline T. Martin, Jill Janene Cress, Tom E. Allen, Rebecca Allee, Rost Parsons, Bjorn Nyberg, Mark John Costello, Peter T. Harris, Frank E. Muller-Karger

Hypogenic karst of the Great Basin

Discoveries in the 1980s greatly expanded speleologists’ understanding of the role that hypogenic groundwater flow can play in developing caves at depth. Ascending groundwater charged with carbon dioxide and, especially, hydrogen sulfide can readily dissolve carbonate bedrock just below and above the water table. Sulfuric acid speleogenesis, in which anoxic, rising, sulfidic groundwater...
Authors
Louise D. Hose, Harvey R. DuChene, Daniel K. Jones, Gretchen M. Baker, Zoe Havlena, Donald S. Sweetkind, Doug Powell

Evidence for humans in North America during the Last Glacial Maximum

Archaeologists and researchers in allied fields have long sought to understand human colonization of North America. When, how, and from where did people migrate, and what were the consequences of their arrival for the established fauna and landscape are enduring questions. Here, we present evidence from excavated surfaces of in situ human footprints from White Sands National Park (New...
Authors
Matthew R. Bennett, David Bustos, Jeffrey S. Pigati, Kathleen B. Springer, Thomas. M. Urban, Vance T. Holliday, Sally C. Reynolds, Marcin Budka, Jeffrey S. Honke, Adam M. Hudson, Brendan Fenerty, Clare Connelly, Patrick J. Martinez, Vincent L. Santucci, Daniel Odess

Alpine glacier reveals ecosystem impacts of Europe's prosperity and peril over the last millennium

Information about past ecosystem dynamics and human activities is stored in the ice of Colle Gnifetti glacier in the Swiss Alps. Adverse climatic intervals incurred crop failures and famines and triggered reestablishment of forest vegetation but also societal resilience through innovation. Historical documents and lake sediments record these changes at local—regional scales but often...
Authors
Sandra O. Brugger, Margit Schwikowski, Erika Gobet, Christoph Schwörer, Christian Rohr, Michael Sigl, Stephan Henne, Christian Pfister, Theo M. Jenk, Paul Henne, Willy Tinner

A stable isotope record of late Quaternary hydrologic change in the northwestern Brooks Range, Alaska (eastern Beringia)

A submillennial-resolution record of lake water oxygen isotope composition (δ18O) from chironomid head capsules is presented from Burial Lake, northwest Alaska. The record spans the Last Glacial Maximum (LGM; ~20–16k cal a bp) to the present and shows a series of large lake δ18O shifts (~5‰). Relatively low δ18O values occurred during a period covering the LGM, when the lake was a...
Authors
Amanda L. King, Lesleigh Anderson, Mark B. Abbott, Mary E. Edwards, Matthew S. Finkenbinder, Bruce P. Finney, Matthew J. Wooller

Detrital signals of coastal erosion and fluvial sediment supply during glacio-eustatic sea-level rise, Southern California, USA

Coastal erosion, including sea-cliff retreat, represents both an important component of some sediment budgets and a significant threat to coastal communities in the face of rising sea level. Despite the importance of predicting future rates of coastal erosion, few prehistoric constraints exist on the relative importance of sediment supplied by coastal erosion versus rivers with respect...
Authors
Glenn R. Sharman, Jacob A. Covault, Daniel F. Stockli, Zack Sickmann, Matthew A. Malkowski, Samuel Johnstone

Early Pleistocene climate-induced erosion of the Alaska Range formed the Nenana Gravel

The Pliocene-Pleistocene transition resulted in extensive global cooling and glaciation, but isolating this climate signal within erosion and exhumation responses in tectonically active regimes can be difficult. The Nenana Gravel is a foreland basin deposit in the northern foothills of the Alaska Range (USA) that has long been linked to unroofing of the Alaska Range starting ca. 6 Ma...
Authors
Rachel Sortor, Brent M. Goehring, Sean P. Bemis, Chester A. Ruleman, Marc W. Caffee, Dylan J. Ward

Editorial special issue natural capital accounting: The content, the context, and the framework

No abstract available.
Authors
Alessandra La Notte, Sara Vallecillo, Joachim Maes, Carl D. Shapiro, Kenneth J. Bagstad, Jane Carter Ingram, Pierre D. Glynn
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