EP42B:
The Architecture and Workings of Earth's Critical Zone II

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Session ID#: 18019

Session Description:
The layers of earth materials and organisms at the Earth’s surface behave as a distinct entity- the critical zone, and fundamentally differ from rock below and atmosphere above.  Although thin on a planetary scale, the critical zone is substantive for the living systems it supports, and significant in modulating the flows of water and sediment to rivers and the sea.   Dynamic interfaces at the top of the vegetation canopy, the ground surface, and at the deep transition to unweathered materials vary spatially, and co-evolve, forming the template on which hydrologic and ecologic processes occur.  Presentations in this session will highlight advances in 1) exploration of the architecture of critical zone and the processes that shape its structure, 2) interactions between organisms and the substrates they live on, and 3) analysis of spatial and temporal variations in water, energy, and biotic activity in the critical zone.
Primary Convener:  Suzanne P Anderson, University of Colorado at Boulder, INSTAAR and Dept. of Geological Sciences, Boulder, United States
Conveners:  Susan L Brantley, Pennsylvania State University Main Campus, Earth & Environmental Systems Institute, University Park, PA, United States and William E Dietrich, University of California Berkeley, Department of Earth and Planetary Science, Berkeley, United States
Chairs:  Susan L Brantley, Pennsylvania State University Main Campus, Earth & Environmental Systems Institute, University Park, PA, United States, Suzanne P Anderson, University of Colorado at Boulder, INSTAAR and Dept. of Geological Sciences, Boulder, United States and William Jesse Hahm, University of California Berkeley, Berkeley, CA, United States
OSPA Liaison:  Suzanne P Anderson, University of Colorado at Boulder, INSTAAR and Dept. of Geological Sciences, Boulder, United States

Cross-Listed:
  • B - Biogeosciences
  • H - Hydrology
  • NS - Near Surface Geophysics
Index Terms:

0439 Ecosystems, structure and dynamics [BIOGEOSCIENCES]
1039 Alteration and weathering processes [GEOCHEMISTRY]
1813 Eco-hydrology [HYDROLOGY]
1824 Geomorphology: general [HYDROLOGY]

Abstracts Submitted to this Session:

Taking the pulse of the skin of the earth: quantifying the spatial and temporal variability in soil biogeochemical cycling and stream aqueous losses (Invited) (125317)
Kathleen A Lohse1, Aaron Fellows2, Gerald N Flerchinger3, Emma Page McCorkle4, Ruth Brooke MacNeille4, Mark S Seyfried5 and Federick B Pierson6, (1)Idaho State University, Department of Biological Sciences, Pocatello, United States, (2)US Dept Agr ARS, Boise, ID, United States, (3)USDA Agriculture Research Service, Northwest Watershed Research Center, Boise, ID, United States, (4)Idaho State University, Biological Sciences, Pocatello, ID, United States, (5)USDA-ARS, Northwest Watershed Research Center, Boise, United States, (6)USDA-ARS, Boise, ID, United States
Kinetically limited weathering at low denudation rates in semi-arid climates (168333)
Veerle Vanacker, University of Louvain, Earth and Life Institute, Louvain-La-Neuve, Belgium, Jerome Schoonejans, Université Catholique de Louvain, Louvain-La-Neuve, Belgium, Sophie Opfergelt, Université Catholique de Louvain, Earth and Life Institute, Environmental Sciences, Louvain-La-Neuve, Belgium, Yolanda Ameijeiras-Marino, Université Catholique de Louvain, Earth and Life Institute-Environmental Sciences (ELIe), Louvain-La-Neuve, Belgium and Marcus Christl, ETH Zurich, Laboratory of Ion Beam Physics, Zurich, Switzerland
The vertical signature of gophers on the critical zone in the Colorado Front Range subalpine zone (161355)
Eric W. Winchell, University of Colorado at Boulder, Boulder, CO, United States, Robert S Anderson, University of Colorado, Boulder, Department of Geological Sciences, Boulder, United States and James M Kaste, College of William and Mary, Williamsburg, VA, United States
Global datasets and Nd isotopes in pine needles estimate dust inputs to ecosystems in eroding landscapes (138746)
Lindsay Arvin1, Clifford S Riebe2, Sarah Aciego3 and Molly Ann Blakowski3, (1)University of Wyoming, Laramie, WY, United States, (2)University of Wyoming, Laramie, United States, (3)University of Michigan Ann Arbor, Ann Arbor, MI, United States
Wet meadow ecosystems and the longevity of biologically-mediated geomorphic features (186123)
Caroline Nash, Oregon State University, Corvallis, OR, United States, Gordon E. Grant, Oregon State University, College of Earth, Ocean, and Atmospheric Sciences, Corvallis, United States and Jim E O'Connor, U.S. Geological Survey, Portland, United States
Slope stability in the critical zone: The relative influence of long vs. short-time scale soil and vegetation properties on debris-flow initiation during a catastrophic rainfall. (141089)
Francis K Rengers1, Luke McGuire2, Jeffrey A. Coe3, Jason W Kean3, Rex L Baum3, Dennis M Staley4 and Jonathan Godt5, (1)U.S. Geological Survey, Geologic Hazards Science Center, Golden, United States, (2)USGS Geologic Hazards Science Center, Golden, CO, United States, (3)USGS Central Region Offices Denver, Denver, CO, United States, (4)USGS, Baltimore, MD, United States, (5)U.S. Geological Survey, Denver, CO, United States
Examining the role of dissolved organic nitrogen in stream ecosystems across biomes and Critical Zone gradients (150212)
Adam S Wymore1, Bianca Rodriguez-Cardona2, Ashley A Coble3, Jody Potter1, Carla López Lloreda4, Katherine Perez Rivera5, Albert De Jesus Roman5, Susana Bernal6, Eugenia Martí Roca6, Pavel Kram7, Jakub Hruska7, Anatoly Stanislavovich Prokushkin8 and William H McDowell9, (1)University of New Hampshire, Durham, NH, United States, (2)University of New Hampshire Main Campus, Durham, United States, (3)University of New Hampshire Main Campus, Durham, NH, United States, (4)University of New Hampshire, Natural Resources and the Environment, Durham, PR, United States, (5)University of Puerto Rico Rio Piedras Campus, San Juan, PR, United States, (6)CEAB-CSIC, Girona, Spain, (7)Czech Geological Survey, Prague, Czech Republic, (8)V.N. Sukachev Institute of Forest, Siberian Branch of Russian Academy of Science, Krasnoyarsk, Russia, (9)University of New Hampshire Main Campus, Natural Resources and the Environment, Durham, NH, United States
Anthropogenic Reorganization of Critical Zone in Intensively Managed Landscapes (168792)
Praveen Kumar1, Alison M Anders2, Elmer Arthur Bettis III3, Neal Edward Blair4, Timothy R Filley5, David A. Grimley6, Phong V. V. Le1, Henry Lin7, Dr. Yu-Feng Forrest Lin, PhD8, Donald Allen Keefer9, Laura L Keefer10, Marian Muste11, Aaron Ian Packman12, Thanos Papanicolaou13, Bruce L Rhoads14, Meredith Richardson Martin15, Doug J Schnoebelen16, Andrew Stumpf6, Adam S Ward17, Christopher G Wilson18, Dong Kook Woo19, Sasha Yan15, Allison Eva Goodwell20 and IMLCZO (Intensively Managed Landscape Critical Zone Observatory), (1)University of Illinois at Urbana Champaign, Urbana, United States, (2)University of Illinois Urbana-Champaign, Department of Earth Science and Environmental Change, Urbana, United States, (3)University of Iowa, Earth and Environmental Sciences, Iowa City, IA, United States, (4)Northwestern University, Evanston, United States, (5)The University of Oklahoma, Department of Geography and Environmental Sustainability, Norman, United States, (6)Illinois State Geological Survey, Champaign, IL, United States, (7)Department of Ecosystem Science and Management, The Pennsylvania State University, University Park, PA, United States, (8)Illinois State Geological Survey, Champaign, United States, (9)University of Illinois at Urbana Champaign, Prairie Research Institute, Urbana, United States, (10)Illinois State Water Survey, Champaign, IL, United States, (11)The University of Iowa, Iowa City, IA, United States, (12)Northwestern University, Evanston, IL, United States, (13)University of Tennessee, Knoxville, United States, (14)University of Illinois at Urbana Champaign, Geography and GIS, Urbana, United States, (15)University of Illinois at Urbana Champaign, Urbana, IL, United States, (16)University of Iowa, Iowa City, IA, United States, (17)Oregon State University, Department of Biological and Ecological Engineering, Corvallis, OR, United States, (18)University of Tennessee, Knoxville, TN, United States, (19)Lawrence Berkeley National Laboratory, Berkeley, United States, (20)Prairie Research Institute at University of Illinois at Urbana-Champaign, Illinois State Water Survey, Champaign, United States

See more of: Earth and Planetary Surface Processes