Science Focus: Dead Zones
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Dissolved and Particulate Organic Carbon in Hydrothermal Plumes from the East Pacific Rise, 91500N
Deep-Sea Research I 58 (2011) 922–931 Contents lists available at ScienceDirect Deep-Sea Research I journal homepage: www.elsevier.com/locate/dsri Dissolved and particulate organic carbon in hydrothermal plumes from the East Pacific Rise, 91500N Sarah A. Bennett a,n, Peter J. Statham a, Darryl R.H. Green b, Nadine Le Bris c, Jill M. McDermott d,1, Florencia Prado d, Olivier J. Rouxel e,f, Karen Von Damm d,2, Christopher R. German e a School of Ocean and Earth Science, National Oceanography Centre, Southampton SO14 3ZH, UK b National Environment Research Council, National Oceanography Centre, Southampton SO14 3ZH, UK c Universite´ Pierre et Marie Curie—Paris 6, CNRS UPMC FRE3350 LECOB, 66650 Banyuls-sur-mer, France d University of New Hampshire, Durham, NH 03824, USA e Woods Hole Oceanographic Institution, Woods Hole, MA 02543, USA f Universite´ Europe´enne de Bretagne, European Institute for Marine Studies IUEM, Technopoleˆ Brest-Iroise, 29280 Plouzane´, France article info abstract Article history: Chemoautotrophic production in seafloor hydrothermal systems has the potential to provide an Received 19 November 2010 important source of organic carbon that is exported to the surrounding deep-ocean. While hydro- Received in revised form thermal plumes may export carbon, entrained from chimney walls and biologically rich diffuse flow 23 June 2011 areas, away from sites of venting they also have the potential to provide an environment for in-situ Accepted 27 June 2011 carbon fixation. In this study, we have followed the fate of dissolved and particulate organic carbon Available online 3 July 2011 (DOC and POC) as it is dispersed through and settles beneath a hydrothermal plume system at 91500N Keywords: on the East Pacific Rise. -
Evaluating Controls on Planktonic Foraminiferal Geochemistry in the Eastern Tropical North Pacific
UC Davis UC Davis Previously Published Works Title Evaluating controls on planktonic foraminiferal geochemistry in the Eastern Tropical North Pacific Permalink https://escholarship.org/uc/item/69r3r0pv Authors Gibson, KA Thunell, RC Machain-Castillo, ML et al. Publication Date 2016-10-15 DOI 10.1016/j.epsl.2016.07.039 Peer reviewed eScholarship.org Powered by the California Digital Library University of California Earth and Planetary Science Letters 452 (2016) 90–103 Contents lists available at ScienceDirect Earth and Planetary Science Letters www.elsevier.com/locate/epsl Evaluating controls on planktonic foraminiferal geochemistry in the Eastern Tropical North Pacific ∗ Kelly Ann Gibson a, , Robert C. Thunell a, Maria Luisa Machain-Castillo b, Jennifer Fehrenbacher c, Howard J. Spero c, Kate Wejnert d, Xinantecatl Nava-Fernández b, Eric J. Tappa a a School of the Earth, Ocean, and Environment, University of South Carolina, Columbia, SC, 29205, USA b Instituto de Ciencias del Mar y Limnología de México, Universidad Nacional Autónoma de México, Unidad Académia Procesos Oceánicos y Costeros, Circuito Exeriro s/n, Ciudad Universitaria, 04510, México DF, Mexico c Department of Earth and Planetary Sciences, University of California Davis, Davis, CA 95616, USA d Fernbank Science Center, Atlanta, GA 30307, USA a r t i c l e i n f o a b s t r a c t Article history: To explore relationships between water column hydrography and foraminiferal geochemistry in the 18 Received 31 January 2016 Eastern Tropical North Pacific, we present δ Oand Mg/Ca records from three species of planktonic Received in revised form 20 July 2016 foraminifera, Globigerinoides ruber, Globigerina bulloides, and Globorotalia menardii, collected from a Accepted 21 July 2016 18 sediment trap mooring maintained in the Gulf of Tehuantepec from 2006–2012. -
PESHTIGO RIVER DELTA Property Owner
NORTHEAST - 10 PESHTIGO RIVER DELTA WETLAND TYPES Drew Feldkirchner Floodplain forest, lowland hardwood, swamp, sedge meadow, marsh, shrub carr ECOLOGY & SIGNIFICANCE supports cordgrass, marsh fern, sensitive fern, northern tickseed sunflower, spotted joe-pye weed, orange This Wetland Gem site comprises a very large coastal • jewelweed, turtlehead, marsh cinquefoil, blue skullcap wetland complex along the northwest shore of Green Bay and marsh bellflower. Shrub carr habitat is dominated three miles southeast of the city of Peshtigo. The wetland by slender willow; other shrub species include alder, complex extends upstream along the Peshtigo River for MARINETTE COUNTY red osier dogwood and white meadowsweet. Floodplain two miles from its mouth. This site is significant because forest habitats are dominated by silver maple and green of its size, the diversity of wetland community types ash. Wetlands of the Peshtigo River Delta support several present, and the overall good condition of the vegetation. - rare plant species including few-flowered spikerush, The complexity of the site – including abandoned oxbow variegated horsetail and northern wild raisin. lakes and a series of sloughs and lagoons within the river delta – offers excellent habitat for waterfowl. A number This Wetland Gem provides extensive, diverse and high of rare animals and plants have been documented using quality wetland habitat for many species of waterfowl, these wetlands. The area supports a variety of recreational herons, gulls, terns and shorebirds and is an important uses, such as hunting, fishing, trapping and boating. The staging, nesting and stopover site for many migratory Peshtigo River Delta has been described as the most birds. Rare and interesting bird species documented at diverse and least disturbed wetland complex on the west the site include red-shouldered hawk, black tern, yellow shore of Green Bay. -
A Synthesis of Information I
Outer Continental Shelf Environmental Assessment Program * A Synthesis of Information I U.S. DEPARTMENT OF COMMERCE U.S. DEPARTMENT OF THE INTEXIOR National Oceanic and Atmospheric Administration Minerals Management Service National Ocean Service Alaska OCS Region Office of Oceanography and Marine Assessment . .:.% y! Ocean Assessments Division ' t. CU ' k Alaska Office OCS Study, MMS 89-0081 . '.'Y. 4 3 --- NOTICES This report has been prepared as part of the U.S. Department bf Commerce, National Oceanic and Atmospheric Administration's Outer Continental Shelf Environmental Assessment Program, and approved for publication. The inter- pretation of data and opinions expressed in this document are those of the authors. Approval does not necessarily signify that the contents reflect the views and policies of the Department of Commerce or those of the Department of the Interior. The National Oceanic and Atmospheric Administration (NOAA) does not approve, recommend, or endorse any proprietary material mentioned in this publication. No reference shall be made to NOAA or to this publication in any advertising or sales promotion which would indicate or imply that NOAA approves, recommends, or endorses any proprietary product or proprietary material mentioned herein, or which has as its purpose or intent to cause directly or indirectly the advertised product to be used or purchased because of this publication. Cover: LandsatTMimage of the Yukon Delta taken on Julg 22, 1975, showing the thamal gradients resulting from Yukon River discharge. In this image land is dqicted in sesof red indicating warmer temperatures versus the dark blues (colder temperatures) of Bering Sea waters. Yukon River water, cooh than the surround- ing land but wanner than marine waters, is represented bg a light aqua blue. -
Temporary Erosion and Sediment Control Manual
Temporary Erosion and Sediment Control Manual M 3109.01 March 2014 Engineering and Regional Operations Development Division, Design Office Americans with Disabilities Act (ADA) Information This material can be provided in an alternative format by emailing the WSDOT Diversity/ ADA Affairs team at [email protected] or by calling 360-705-7097 or toll free: 855-362-4ADA (4232). Persons who are deaf or hard of hearing may contact the Washington Relay Service at 7-1-1. Title VI Notice to Public It is Washington State Department of Transportation (WSDOT) policy to ensure no person shall, on the grounds of race, color, national origin, or sex, as provided by Title VI of the Civil Rights Act of 1964, be excluded from participation in, be denied the benefits of, or be otherwise discriminated against under any of its federally funded programs and activities. Any person who believes his/her Title VI protection has been violated may file a complaint with WSDOT’s Office of Equal Opportunity (OEO). For Title VI complaint forms and advice, please contact OEO’s Title VI Coordinator at 360-705-7082 or 509-324-6018. To get the latest information on individual WSDOT publications, sign up for email updates at: www.wsdot.wa.gov/publications/manuals Foreword The Temporary Erosion and Sediment Control Manual (TESCM) replaces Chapter 6 and Appendix 6A of the Washington State Department of Transportation (WSDOT) Highway Runoff Manual. It outlines WSDOT’s policies for meeting the National Pollutant Discharge Elimination System (NPDES) Construction Stormwater General Permit requirements and the requirements in Volume II of the stormwater management manuals published by the Washington State Department of Ecology. -
Tennessee Erosion & Sediment Control Handbook
TENNESSEE EROSION & SEDIMENT CONTROL HANDBOOK A Stormwater Planning and Design Manual for Construction Activities Fourth Edition AUGUST 2012 Acknowledgements This handbook has been prepared by the Division of Water Resources, (formerly the Division of Water Pollution Control), of the Tennessee Department of Environment and Conservation (TDEC). Many resources were consulted during the development of this handbook, and when possible, permission has been granted to reproduce the information. Any omission is unintentional, and should be brought to the attention of the Division. We are very grateful to the following agencies and organizations for their direct and indirect contributions to the development of this handbook: TDEC Environmental Field Office staff Tennessee Division of Natural Heritage University of Tennessee, Tennessee Water Resources Research Center University of Tennessee, Department of Biosystems Engineering and Soil Science Civil and Environmental Consultants, Inc. North Carolina Department of Environment and Natural Resources Virginia Department of Conservation and Recreation Georgia Department of Natural Resources California Stormwater Quality Association ~ ii ~ Preface Disturbed soil, if not managed properly, can be washed off-site during storms. Unless proper erosion prevention and sediment control Best Management Practices (BMP’s) are used for construction activities, silt transport to a local waterbody is likely. Excessive silt causes adverse impacts due to biological alterations, reduced passage in rivers and streams, higher drinking water treatment costs for removing the sediment, and the alteration of water’s physical/chemical properties, resulting in degradation of its quality. This degradation process is known as “siltation”. Silt is one of the most frequently cited pollutants in Tennessee waterways. The division has experimented with multiple ways to determine if a stream, river, or reservoir is impaired due to silt. -
Analyzing Trends of Dike-Ponds Between 1978 and 2016 Using Multi-Source Remote Sensing Images in Shunde District of South China
sustainability Article Analyzing Trends of Dike-Ponds between 1978 and 2016 Using Multi-Source Remote Sensing Images in Shunde District of South China Fengshou Li 1, Kai Liu 1,* , Huanli Tang 2, Lin Liu 3,4,* and Hongxing Liu 4,5 1 Guangdong Key Laboratory for Urbanization and Geo-simulation, Guangdong Provincial Engineering Research Center for Public Security and Disaster, School of Geography and Planning, Sun Yat-Sen University, Guangzhou 510275, China; [email protected] 2 Guangzhou Zengcheng District Urban and Rural Planning and Surveying and Mapping Geographic Information Institute, Guangzhou 511300, China; [email protected] 3 Center of Geo-Informatics for Public Security, School of Geographic Sciences, Guangzhou University, Guangzhou 510006, China 4 Department of Geography and Geographic Information Science, University of Cincinnati, Cincinnati, OH 45221, USA; [email protected] 5 Department of Geography, the University of Alabama, Tuscaloosa, AL 35487, USA * Correspondence: [email protected] (K.L.); [email protected] (L.L.); Tel.: +86-020-8411-3044 (K.L.); +1-513-556-3429 (L.L.); Fax: +86-020-8411-3057 (K.L. & L.L.) Received: 27 August 2018; Accepted: 26 September 2018; Published: 30 September 2018 Abstract: Dike-ponds have experienced significant changes in the Pearl River Delta region over the past several decades, especially since China’s economic reform, which has seriously affected the construction of ecological environments. In order to monitor the evolution of dike-ponds, in this study we use multi-source remote sensing images from 1978 to 2016 to extract dike-ponds in several periods using the nearest neighbor classification method. -
Dispersal of Larval Suckers at the Williamson River Delta, Upper Klamath Lake, Oregon, 2006–09
Prepared in cooperation with the Bureau of Reclamation Dispersal of Larval Suckers at the Williamson River Delta, Upper Klamath Lake, Oregon, 2006–09 Scientific Investigations Report 2012–5016 U.S. Department of the Interior U.S. Geological Survey Cover: Inset: Larval sucker from Upper Klamath Lake, Oregon. (Photograph taken by Allison Estergard, Student, Oregon State University, Corvallis, Oregon, 2011.) Top: Photograph taken from the air of the flooded Williamson River Delta, Upper Klamath Lake, Oregon. (Photograph taken by Charles Erdman, Fisheries Technician, Williamson River Delta Preserve, Klamath Falls, Oregon, 2008.) Bottom left: Photograph of a pop net used by The Nature Conservancy to collect larval suckers in Upper Klamath Lake and the Williamson River Delta, Oregon. (Photograph taken by Heather Hendrixson, Director, Williamson River Delta Preserve, Klamath Falls, Oregon, 2006.) Bottom middle: Photograph of a larval trawl used by Oregon State University to collect larval suckers in Upper Klamath Lake and the Williamson River Delta, Oregon. (Photograph taken by David Simon, Senior Faculty Research Assistant, Oregon State University, Corvallis, Oregon, 2010.) Bottom right: Photograph of a plankton net used by the U.S. Geological Survey to collect larval suckers in Upper Klamath Lake and the Williamson River Delta, Oregon. (Photographer unknown, Klamath Falls, Oregon, 2009.) Dispersal of Larval Suckers at the Williamson River Delta, Upper Klamath Lake, Oregon, 2006–09 By Tamara M. Wood, U.S. Geological Survey, Heather A. Hendrixson, The Nature Conservancy, Douglas F. Markle, Oregon State University, Charles S. Erdman, The Nature Conservancy, Summer M. Burdick, U.S. Geological Survey, Craig M. Ellsworth, U.S. Geological Survey, and Norman L. -
Losses of Salt Marsh in China: Trends, Threats and Management
Losses of salt marsh in China: Trends, threats and management Item Type Article Authors Gu, Jiali; Luo, Min; Zhang, Xiujuan; Christakos, George; Agusti, Susana; Duarte, Carlos M.; Wu, Jiaping Citation Gu J, Luo M, Zhang X, Christakos G, Agusti S, et al. (2018) Losses of salt marsh in China: Trends, threats and management. Estuarine, Coastal and Shelf Science 214: 98–109. Available: http://dx.doi.org/10.1016/j.ecss.2018.09.015. Eprint version Post-print DOI 10.1016/j.ecss.2018.09.015 Publisher Elsevier BV Journal Estuarine, Coastal and Shelf Science Rights NOTICE: this is the author’s version of a work that was accepted for publication in Estuarine, Coastal and Shelf Science. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Estuarine, Coastal and Shelf Science, [, , (2018-09-18)] DOI: 10.1016/j.ecss.2018.09.015 . © 2018. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http:// creativecommons.org/licenses/by-nc-nd/4.0/ Download date 09/10/2021 17:12:34 Link to Item http://hdl.handle.net/10754/628759 Accepted Manuscript Losses of salt marsh in China: Trends, threats and management Jiali Gu, Min Luo, Xiujuan Zhang, George Christakos, Susana Agusti, Carlos M. Duarte, Jiaping Wu PII: S0272-7714(18)30220-8 DOI: 10.1016/j.ecss.2018.09.015 Reference: YECSS 5973 To appear in: Estuarine, Coastal and Shelf Science Received Date: 15 March 2018 Revised Date: 21 August 2018 Accepted Date: 14 September 2018 Please cite this article as: Gu, J., Luo, M., Zhang, X., Christakos, G., Agusti, S., Duarte, C.M., Wu, J., Losses of salt marsh in China: Trends, threats and management, Estuarine, Coastal and Shelf Science (2018), doi: https://doi.org/10.1016/j.ecss.2018.09.015. -
“Major World Deltas: a Perspective from Space
“MAJOR WORLD DELTAS: A PERSPECTIVE FROM SPACE” James M. Coleman Oscar K. Huh Coastal Studies Institute Louisiana State University Baton Rouge, LA TABLE OF CONTENTS Page INTRODUCTION……………………………………………………………………4 Major River Systems and their Subsystem Components……………………..4 Drainage Basin………………………………………………………..7 Alluvial Valley………………………………………………………15 Receiving Basin……………………………………………………..15 Delta Plain…………………………………………………………...22 Deltaic Process-Form Variability: A Brief Summary……………………….29 The Drainage Basin and The Discharge Regime…………………....29 Nearshore Marine Energy Climate And Discharge Effectiveness…..29 River-Mouth Process-Form Variability……………………………..36 DELTA DESCRIPTIONS…………………………………………………………..37 Amu Darya River System………………………………………………...…45 Baram River System………………………………………………………...49 Burdekin River System……………………………………………………...53 Chao Phraya River System……………………………………….…………57 Colville River System………………………………………………….……62 Danube River System…………………………………………………….…66 Dneiper River System………………………………………………….……74 Ebro River System……………………………………………………..……77 Fly River System………………………………………………………...…..79 Ganges-Brahmaputra River System…………………………………………83 Girjalva River System…………………………………………………….…91 Krishna-Godavari River System…………………………………………… 94 Huang He River System………………………………………………..……99 Indus River System…………………………………………………………105 Irrawaddy River System……………………………………………………113 Klang River System……………………………………………………...…117 Lena River System……………………………………………………….…121 MacKenzie River System………………………………………………..…126 Magdelena River System……………………………………………..….…130 -
Beaulieu2009 51387.Pdf
LIMNOLOGY and Limnol. Oceanogr.: Methods 7, 2009, 235–248 OCEANOGRAPHY: METHODS © 2009, by the American Society of Limnology and Oceanography, Inc. Comparison of a sediment trap and plankton pump for time- series sampling of larvae near deep-sea hydrothermal vents Stace E. Beaulieu*1, Lauren S. Mullineaux1, Diane K. Adams2, Susan W. Mills1 1Biology Department, Woods Hole Oceanographic Institution, Woods Hole, MA, USA 2National Institutes of Health, National Institute of Dental and Craniofacial Research, Bethesda, MD, USA Abstract Studies of larval dispersal and supply are critical to understanding benthic population and community dynamics. A major limitation to these studies in the deep sea has been the restriction of larval sampling to infre- quent research cruises. In this study, we investigated the utility of a sediment trap for autonomous, time-series sampling of larvae near deep-sea hydrothermal vents. We conducted simultaneous deployments of a time-series sediment trap and a large-volume plankton pump in close proximity on the East Pacific Rise (2510-m depth). Grouped and species-specific downward fluxes of larvae into the sediment trap were not correlated to larval abundances in pump samples, mean horizontal flow speeds, or mean horizontal larval fluxes. The sediment trap collected a higher ratio of gastropod to polychaete larvae, a lower diversity of gastropod species, and over- or undercollected some gastropod species relative to frequencies in pump sampling. These differences between the two sampling methods indicate that larval concentrations in the plankton are not well predicted by fluxes of larvae into the sediment trap. Future studies of deep-sea larvae should choose a sampling device based on spe- cific research goals. -
Source, Composition, and Flux of Organic Detritus In
SOURCE, COMPOSITION, AND FLUX OF ORGANIC DETRITUS IN LOWER COOK INLET by Jerry D. Larrance and Alexander J. Chester Pacific Marine Environmental Laboratory National Oceanic and Atmospheric Administration Final Report Outer Continental Shelf Environmental Assessment Program Research Unit 425 July 1979 TABLE OF CONTENTS List of Figures . 5 List of Tables . 7 I. ABSTRACT . 9 II. INTRODUCTION . 11 III. CURRENT STATE OF KNOWLEDGE AND STUDY AREA . 13 A. Circulation and Physical Characteristics . 13 B. Phytoplankton and Primary Production . 17 IV. FIELD AND LABORATORY METHODS . 18 A. Field Schedule and Strategy . 18 1. NOAA Ship Schedule . 18 2. Station Locations . 19 B. Sediment Trap Methodology . 19 C. Water Sampling and Analyses . 24 v. RESULTS AND DISCUSSION . 25 A. Phytoplankton Species . 25 B. Primary Productivity and Nutrients . 32 C. Sediment Trap Studies . 42 Total Particulate Flux . 42 Microscopic Investigations . 43 Pigment Studies . 48 Carbon and Nitrogen Content . 53 VI. SUMMARY . 55 REFERENCES . 57 APPENDIX . ...! . 61 3 LIST OF FIGURES Figure 1. Pigment loss from the euphotic zone as an indication of grazing. Figure 2. Diagram of spring and summer mean flow in lower Cook Inlet (after Muench, et al., 1978). Figure 3. Station locations, lower Cook Inlet, 1978. Figure 4. Sediment trap mooring, lower Cook Inlet, 1978. Figure 5. Dual sediment traps with current vane, lower Cook Inlet, 1978. Figure 6. Surface phytoplankton cewll concentrations, lower Cook Inlet, 1978. Figure 7. Nitrate and silicate in the upper 25 m, lower Cook Inlet, 1978. Figure 8. Chlorophyll in the upper 25 m and carbon assimilation in the euphotic zone of lower Cook Inlet, 1978.