Causes of Gulf of Mexico Hypoxia
|
|
|
- Maurice Rafe Heath
- 6 years ago
- Views:
Transcription
1 Causes of Gulf of Mexico Hypoxia Nancy N. Rabalais 1 R. Eugene Turner 2 1 Louisiana Universities Marine Consortium 2 Louisiana State University Center for Sponsored Coastal Ocean Research, Coastal Ocean Program, NGOMEX Hypoxia Studies
2 .6% 58% 18% 21% [w & w 2.4%] 5 km (Goolsby et al., 1999, Rabalais 22)
3 ( Mississippi River Atchafalaya River New Orleans (Photo: N. Rabalais) Hypoxic Area Overwhelming Sources of Water & Nutrients Nutrient effects are more far reaching than suspended sediment plume, esp. N dominant wind direction
4 Nutrients, Increased Growth, Low Oxygen Time magazine Time Magazine Coastal, No Upwelling, No OMZ
5 3 L. Calcasieu Atchafalaya R. Mississippi R Jul km 3 L. Calcasieu Atchafalaya R. Mississippi R Jul km 3 L. Calcasieu Atchafalaya R. Mississippi R Jul km (Rabalais et al., 22)
6 Persistent, Annual, Bottom Water Hypoxia TX LA 22 * transect C (Rabalais 23) Mississippi River delta onto upper Texas coast strong salinity and temperature stratification 4-5 m nearshore to m offshore.5 km nearshore to 1 + km offshore seasonal; most widespread and severe in May - Sep average 15,6 km 2 in mid summer
7 Persistent Over Extended Periods July 1-12, 1993 NECOP (Bratkovitch et al.) July 13-21, 1993 LATEX (Rabalais et al.) July 24-3, 1993 NECOP (Rabalais et al.) (Source: N. Rabalais, LUMCON)
8 3. Sabine L. Frequency of Hypoxia L. Calcasieu Atchafalya R. Mississippi R transect F Terrebonne Bay % 5% 25% 25% 5 km transect C (modified from Rabalais et al. 22) more frequent down current from Mississippi and Atchafalaya rivers discharges distribution varies monthly; nutrient flux, discharge, currents climate driven differences
9 Estimated Size of Bottom-Water Hypoxia in Mid-Summer 2, Hurricanes Area (km 2 ) 15, 1, Drought Year 5, 1985 no data (updated from Rabalais et al. 22) Nutrient-enhanced carbon production leads to oxygen depletion, and the distribution and dynamics are bounded by the physics of the system.
10 Stratification (mid-summer) Salinity Temperature C Density (sigma-t) C6B Depth (m) Temperature Dissolved Oxygen (mg/l) km (N. Rabalais, LUMCON) Salinity Dissolved Oxygen Dissolved Oxygen (mg/l)
11 unexpected eastward flow strong vertical shear weak sheared flow strong unidirectional to bottom Hurricane Isadore upwelling favorable consistent with wind-driven downwelling expected from predominantly SE winds 14 March through 12 November 22 (Wiseman et al. 24)
12 1 st mode: nearly unidirectional vertically-sheared flow 2 nd mode: two-layered flow summer > spring or fall 82% 13% EOF (empirical orthogonal flow) analysis (Wiseman et al. 24)
13 Surface Salinity (psu) Surface DIN (µm) Bottom Dissolved Oxygen (mg l -1 ) C1 C3 C4 C5 C6B C6 C7 5 Surface Chlorophyll (µg l -1 ) C8 C9 1 J F M A M J J A S O N D J F M A M J J A S O N D (Rabalais et al., in revision)
14 1. a 1.5 NP = x 1-7 (N-NO 3 ) t-1 b R =.73; P < CCF. -.5 NP (gc m -2 d -1 ) Time lag (months) (Justić et al. 1997) -.5 1x1 6 2x1 6 3x1 6 4x1 6 N-NO 3 load (kg d -1 ) Prior and further analyses of timing and volume of discharge, timing and load of nutrients, particularly nitrate-n, timing and accumulation of carbon, and rates and temporal sequence of oxygen depletion are consistent with a seasonal cycle of nutrient-enhanced production, flux of organic matter and depletion of oxygen under persistent and strong water column stratification.
15 Salinity (PSU) Surface NO 3 -N (μm) Surface Chlorophyll (μg l -1 ) Surface NH 4 -N (μm) Bottom Dissolved Oxygen (mg l -1 ) (Rabalais et al., in revision)
16 9 8 7 cold 6 front Bottom Oxygen, 2 m water depth, 1993 Apr Jun Aug Oct cold fronts respiration Tropical Storm, Campeche Day May cold front Jul Sep extremely low and anoxic conditions respiration Nov respiration deep water intrusion Day reduction of the oxygen concentration from about 6 mg l -1 to less than 2 mg l -1 is 18, 11 or 9 days, in April, May and July, respectively (Rabalais et al., in revision) (Rabalais et al. 22)
17 (Turner et al. submitted) (Meade 1995) (Turner and Rabalais 23)
18 NO3 -N (16 mt yr -1 ) Streamflow (1 3 m 3 s 1 ) A NO3 -N (mg L-1 ) 1.5 Cedar, IA DesMoines, IA Lower Illinois, IL Wabash, IN Minnesota, MN Muskingham, OH Lower Missouri, MO Lower Mississippi, LA 3% increase in N load 8% due to NO 3 - concentration 2% due to discharge (Donner et al. 22, Justić et al. 23)
19 maximum flow mean flow cfs minimum flow
20 (Lohrenz et al. 1997) 5% C * More Nutrients, More Production, More Carbon Flux Decreased Water Clarity Decreased Oxygen Concentration Average Secchi Disk (m) Year (Rabalais et al. 221) (Turner et al. 25)
21 Predicting Hypoxia in summer (nitrate flux in the spring, Apr-Jun, year) Similar analyses with PO4, TP, TN, Si, various Si:N:P ratios indicate that N, in the form of NO3+NO2, is the major driving factor influencing the size of hypoxia on the Louisiana shelf. (Turner et al. 26)
22 Photo removed. Sediment cores taken from the Mississippi River bight where accumulation rates are between.5 and 2.5 cm y -1. Station I3 F35 E5 E3 E6 D5 3. Sabine L. L. Calcasieu Atchafalya R. Mississippi R. Latitude (ºN) % 5% 25% 25% * 5 km Terrebonne Bay Mississippi River Delta Bight Longitude (ºW)
23 Fossil and chemical biomarkers from cores (in the last half of the 2 th century): increased phytoplankton production Increased diatom biomass Increased diatoms that are less silicified as Si:N 1:1 Increased phytoplankton pigments Increase in TOC Increase in hypoxia tolerant benthic foraminiferans Loss of hypoxia intolerant benthic foraminiferans Increase in pigments of anoxygenic phototrophic brownpigmented green sulfur bacteria Worsening hypoxia stress Hypoxia has not always been present The long-term changes are consistent with the observational data on hypoxia and coincident with the well-documented increase in nitrate export from the Mississippi River.
24 Important Factors for Hypoxia Stratification Currents Winds, waves Nutrient-enhanced primary production High flux of surface carbon to the seabed Oxygen consumption exceeds oxygen resupply Directly proportional to N load Unimportant (or Minimal) Factors for Hypoxia Deep-water oxygen minimum layer Allochthonous river carbon Ground water Wetland erosion Estuarine nutrients Mississippi River mainstem and deltaic levees Reduced suspended sediments Upwelled nutrients Climate (not as yet) (Source: N. N. Rabalais, LUMCON)
25 2 Teragrams of nitrogen Period of explosive increase Total reactive N of coastal eutrophication 15 Industrially fixed 1 (mainly fertilizer) 5 N-fixing crops Fossil fuel combustion Period of the explosive increase in coastal eutrophication around the world in relation to global additions of anthropogenically fixed nitrogen (from Boesch 22).
Nancy Rabalais Louisiana Universities Marine Consortium
Eutrophication, Coastal Hypoxia, Carbon & Climate Nancy Rabalais Louisiana Universities Marine Consortium nrabalais@lumcon.edu http://www.gulfhypoxia.net Charismatically stressed and dead benthic fauna
Science of the Causes of Hypoxia Nancy Rabalais et al.
Science of the Causes of Hypoxia Nancy Rabalais et al. In support of overview of diversions and hypoxia, and context for refining science needs; July 14, 2014 Scientific Curiosity Hypothesis Testing Management
PRESS RELEASE. LOUISIANA UNIVERSITIES MARINE CONSORTIUM August 2, 2017 SUMMARY
PRESS RELEASE LOUISIANA UNIVERSITIES MARINE CONSORTIUM August 2, 2017 SUMMARY The 2017 area of low oxygen, commonly known as the Dead Zone, measured 22,720 square kilometers (= 8,776 square miles) is the
PRESS RELEASE. LOUISIANA UNIVERSITIES MARINE CONSORTIUM July 28, Abstract
PRESS RELEASE LOUISIANA UNIVERSITIES MARINE CONSORTIUM July 28, 2013 Abstract The 2013 area of low oxygen, commonly known as the Dead Zone, measured 15,120 square kilometers (= 5,800 square miles) in this
Characterization of Hypoxia
NOAA COASTAL OCEAN PROGRAM Decision Analysis Series No. 15 Science for Solutions Characterization of Hypoxia Topic 1 Report for the Integrated Assessment on Hypoxia in the Gulf of Mexico Nancy N. Rabalais,
PRESS RELEASE. LOUISIANA UNIVERSITIES MARINE CONSORTIUM August 4, 2013
PRESS RELEASE LOUISIANA UNIVERSITIES MARINE CONSORTIUM August 4, 2013 The 2014 area of low oxygen, commonly known as the Dead Zone, measured 13,080 square kilometers (= 5,052 square miles) as of Aug 1,
Characterization of Hypoxia
NOAA COASTAL OCEAN PROGRAM Decision Analysis Series No. 15 Science for Solutions Characterization of Hypoxia Topic 1 Report for the Integrated Assessment on Hypoxia in the Gulf of Mexico Nancy N. Rabalais,
2010 DEAD ZONE ONE OF THE LARGEST EVER. 1 August 2010, from Cocodrie, Louisiana
2010 DEAD ZONE ONE OF THE LARGEST EVER 1 August 2010, from Cocodrie, Louisiana The area of hypoxia, or low oxygen, in the northern Gulf of Mexico west of the Mississippi River delta covered 20,000 square
Hypoxia in the Gulf of Mexico: Benefits and Challenges of Using Multiple Models to Inform Management Decisions
Hypoxia in the Gulf of Mexico: Benefits and Challenges of Using Multiple Models to Inform Management Decisions Multiple Models for Management (M3.2) in the Chesapeake Bay February 25, 2013 Annapolis MD
Mississippi River Water Quality: Policy, Landscapes and Hypoxia
Mississippi River Water Quality: Policy, Landscapes and Hypoxia Dennis Keeney Distinguished Lecture R. Eugene Turner Dept. Oceanography and Coastal Studies Louisiana State University (euturne@lsu.edu)
Hypoxia in the Northern Gulf of Mexico: Does the Science Support the Plan to Reduce, Mitigate, and Control Hypoxia?
Estuaries and Coasts Vol. 30, No. 5, p. 753 772 October 2007 Hypoxia in the Northern Gulf of Mexico: Does the Science Support the Plan to Reduce, Mitigate, and Control Hypoxia? N. N. RABALAIS 1, *, R.
Dead-Zones and Coastal Eutrophication: Case- Study of Chesapeake Bay W. M. Kemp University of Maryland CES Horn Point Laboratory Cambridge, MD
Dead-Zones and Coastal Eutrophication: Case- Study of Chesapeake Bay W. M. Kemp University of Maryland CES Horn Point Laboratory Cambridge, MD Presentation to COSEE Trends Orientation at UMCES HPL 4 August
The Role of Midwestern Agriculture in Gulf of Mexico Hypoxia. Peter Scharf Nutrient Management Specialist MU Agronomy Extension
The Role of Midwestern Agriculture in Gulf of Mexico Hypoxia Peter Scharf Nutrient Management Specialist MU Agronomy Extension What is hypoxia? Hyp = low Oxia = oxygen Hypoxia = low oxygen defined as less
The Complex Impacts of Rivers on Coastal and Continental Shelf Environments
The Complex Impacts of Rivers on Coastal and Continental Shelf Environments L. Donelson Wright Professor Emeritus, Virginia Institute of Marine Science September 6, 2007 At the most basic level, river-ocean
ONLINE SUPPORTING MATERIAL
ONLINE SUPPORTING MATERIAL for the paper bg-22-78: Simulating the effects of phosphorus limitation in the Mississippi and Atchafalaya River plumes by A. Laurent, K. Fennel, J. Hu and R. Hetland. 5 Patterns
2010 Forecast of the Summer Hypoxic Zone Size, Northern Gulf of Mexico
2010 Forecast of the Summer Hypoxic Zone Size, Northern Gulf of Mexico Abstract As the environmental catastrophe from the Deepwater Horizon oil spill unfolds along the northern Gulf of Mexico, the persistent
Corn Acreage, Fertilizer Use, & Spring Nutrient Discharge in the Mississippi River Basin: Relationships & Impact on Hypoxia
Corn Acreage, Fertilizer Use, & Spring Nutrient Discharge in the Mississippi River Basin: Relationships & Impact on Hypoxia C.S. Snyder, PhD, CCA Nitrogen Program Director Northern Gulf of Mexico Hypoxia:
THE CHALLENGE OF NUTRIENT CONTROL IN LARGE SCALE WATERSHEDS: EFFORTS IN THE U.S.
THE CHALLENGE OF NUTRIENT CONTROL IN LARGE SCALE WATERSHEDS: EFFORTS IN THE U.S. NAE Convocation of the Professional Engineering Societies David Dzombak Carnegie Mellon University May 16, 2011 OUTLINE
of Hypoxia in the Northern Gulf of Mexico
of Hypoxia in the Northern Gulf of Mexico hile information gaps still exist and several factors discussed below may contribute to hypoxia, the overwhelming scientific evidence indicates that excess nitrogen
Effects of Winds on Hypoxia Formation in the Pearl River Estuarine Coastal Waters
The 1th International Estuarine Biogeochemistry Symposium May 19-22, 28, Xiamen China Effects of Winds on Hypoxia Formation in the Pearl River Estuarine Coastal Waters Kedong YIN 1,2,3, Paul J. Harrison
Nutrient Response to Sewage Abatement in Hong Kong
Nutrient Response to Sewage Abatement in Hong Kong Prof. Paul J. Harrison Atmospheric, Marine & Coastal Environment Program Institute for the Environment HK University of Science & Technology Outline Background
Hypoxia Effects on Demersal and Benthic Fauna
Hypoxia Effects on Demersal and Benthic Fauna Nancy N. Rabalais 1 R. Eugene Turner 2 1 Louisiana Universities Marine Consortium 2 Louisiana State University Center for Sponsored Coastal Ocean Research,
Intersection of Policy & Trends: Climate, Hypoxia, and Louisiana s Coast
Intersection of Policy & Trends: Climate, Hypoxia, and Louisiana s Coast Doug Daigle Louisiana Hypoxia Working Group Louisiana Water Conference March 27, 2018 Louisiana State University Mississippi
Reducing Hypoxia in the Gulf of Mexico: Advice from Three Models
Estuaries Vol. 27, No. 3, p. 419 425 June 2004 Reducing Hypoxia in the Gulf of Mexico: Advice from Three Models DONALD SCAVIA 1,, *, DUBRAVKO JUSTIĆ 2, and VICTOR J. BIERMAN, JR. 3 1 National Oceanic and
Science to Improve Management of the Gulf of Mexico Hypoxic Zone: A Collaborative Approach
Science to Improve Management of the Gulf of Mexico Hypoxic Zone: A Collaborative Approach Alan Lewitus, David Kidwell, and Libby Jewett Center for Sponsored Coastal Ocean Research National Oceanic and
Modeling Coastal Hypoxia: Lessons learned and perspectives for the future Part 1
Modeling Coastal Hypoxia: Lessons learned and perspectives for the future Part 1 R. Eugene Turner 1 Dubravko Justi 1 and Nancy N. Rabalais 2 1 Louisiana State University, USA 2 Louisiana Universities Marine
Implications of global climate change for estuarine & coastal ecosystems (Gulf of Mexico in particular)
- The cumulative effects of global change, including climate change, increased population, & more intense industrialization & agribusiness, will likely continue & intensify the course of eutrophication
HYPOXIA ACTION PLAN: WHAT CAN MIDWEST AGRICULTURE DO? Dennis McKenna Illinois Department of Agriculture
HYPOXIA ACTION PLAN: WHAT CAN MIDWEST AGRICULTURE DO? Dennis McKenna Illinois Department of Agriculture The hypoxic zone is an area in the northern Gulf of Mexico where dissolved oxygen concentrations
2014 Gulf of Mexico Hypoxia Forecast Donald Scavia 1, Mary Anne Evans 2, Dan Obenour 1. June 17, 2014
2014 Gulf of Mexico Hypoxia Forecast Donald Scavia 1, Mary Anne Evans 2, Dan Obenour 1 1 University of Michgan 2 US Geological Survey Great Lakes Science Center June 17, 2014 The Gulf of Mexico annual
Thresholds in Recovery of Eutrophic Bay Sub-Systems: Five Case-Studies
Thresholds in Recovery of Eutrophic Bay Sub-Systems: Five Case-Studies W. Michael Kemp, Walter Boynton, and Denise Breitburg University of Maryland CES & SERC (Collaborators: J. Testa, Y. Lee, J. Hagy,
2013 Gulf of Mexico Hypoxia Forecast Donald Scavia 1, Mary Anne Evans 2, Dan Obenour 1. June 17, 2013, observed area added January 2, 2014
The 2013 Forecast 2013 Gulf of Mexico Hypoxia Forecast Donald Scavia 1, Mary Anne Evans 2, Dan Obenour 1 1 University of Michgan 2 US Geological Survey Great Lakes Science Center June 17, 2013, observed
NGOMEX: Effects of moderate hypoxia on benthic organisms in the Gulf of Mexico
NGOMEX: Effects of moderate hypoxia on benthic organisms in the Gulf of Mexico Ed Buskey, Laura Ryckman, Wayne Gardner and Peter Thomas Marine Science Institute The University of Texas at Austin What is
Estuarine and Coastal Biogeochemistry
Estuarine and Coastal Biogeochemistry OCN 623 Chemical Oceanography 9 April 2013 Reading: Seitzinger & Mayorga (2008) 2013 Frank Sansone 1. Global coastal zone Outline 2. Nutrient loading in estuaries
Gulf of Mexico Hypoxia Monitoring Implementation Plan. Alan Lewitus NOAA/NOS/NCCOS Center for Sponsored Coastal Ocean Research
Gulf of Mexico Hypoxia Monitoring Implementation Plan Alan Lewitus NOAA/NOS/NCCOS Center for Sponsored Coastal Ocean Research GCOOS Board of Directors Meeting 19 Aug 2008 Management Driver: Action Plans
HYPOXIA Definition: ~63 µm; 2 mg l -1 ; 1.4 ml l -1 ; 30 %
HYPOXIA Definition: ~63 µm; 2 mg l -1 ; 1.4 ml l -1 ; 30 % Consequences of hypoxia Reduce habitat for living resources Change biogeochemical processes P released from sediments Denitrification reduced
Ocean Water Buoyancy and Hypoxia in the Gulf of Mexico. Definitions. Hypoxia in the Headlines. Joe Smith. ExxonMobil Upstream Research Company
Ocean Water Buoyancy and Hypoxia in the Gulf of Mexico Joe Smith ExxonMobil Upstream Research Company Joe Smith 2004 Hypoxia NOAA Coastal Data Development Center Definitions Hypoxia is a term meaning low
Predicting the response of Gulf of Mexico hypoxia to variations in Mississippi River nitrogen load
May 2003 Volume 48 Number 3 Limnol. Oceanogr., 48(3), 2003, 951 956 2003, by the American Society of Limnology and Oceanography, Inc. Predicting the response of Gulf of Mexico hypoxia to variations in
NUTRIENT THE OHIO RIVER
NUTRIENT MANAGEMENT FOR THE OHIO RIVER Why nutrient management is necessary Nutrients are necessary for a healthy aquatic community, but Excessive quantities of nutrients can have negative effects Negative
Younjoo Lee and Walter Boynton. Horn Point Laboratory and Chesapeake Biological Laboratory University of Maryland Center for Environmental Science
Younjoo Lee and Walter Boynton Horn Point Laboratory and Chesapeake Biological Laboratory University of Maryland Center for Environmental Science 1 Data and Method Summer Hypoxia Dissolve Oxygen Patterns
2016 Forecast: Summer Hypoxic Zone Size Northern Gulf of Mexico R. Eugene Turner 1 and Nancy N. Rabalais 2
2016 Hypoxia Forecast 1 2016 Forecast: Summer Hypoxic Zone Size Northern Gulf of Mexico R. Eugene Turner 1 and Nancy N. Rabalais 2 Abstract Each year a hypoxic water mass with oxygen concentrations 2 mg
Concepts of Coastal Deltaic Floodplain as Newly Emergent Ecosystems
Concepts of Coastal Deltaic Floodplain as Newly Emergent Ecosystems Robert R. Twilley Department of Oceanography and Coastal Sciences Director of Louisiana Sea Grant College Program LSU Ecosystems of Coastal
A case study of nonpoint-source pollution and eutrophication
Algal Blooms in the Gulf of Mexico: A case study of nonpoint-source pollution and eutrophication Introduction What cause the dead zone? The time course of eutrophication What can we do about it? What is
Nutrients, Algal Blooms and Red Tides in Hong Kong Waters. Paul J. Harrison and Jie XU
Nutrients, Algal Blooms and Red Tides in Hong Kong Waters Paul J. Harrison and Jie XU Division of Environment, Hong Kong University of Science & Technology 1. Introduction The Pearl River is China's second
GLOBAL WARMING LEADS TO UNDERWATER DESERTS" AND COASTAL DEAD ZONES
GLOBAL WARMING LEADS TO UNDERWATER DESERTS" AND COASTAL DEAD ZONES Suhas E.P RVCE (VTU) No. 4/1 Golden Residency, Rmv 2 stage, Sanjaynagar, Bangalore SYNOPSIS Oxygen-poor waters occupy large volumes of
Mid-Bay Dissolved Oxygen Trends as a. Function of Nutrient Loads and Strength of Stratification
Mid-Bay Dissolved Oxygen Trends as a William P. Ball 1, Damian C. Brady 3, Dominic D. DiToro 4, W. Michael Kemp 2, Rebecca R. Murphy 1, Jeremy M. Testa 2 (and others) 1 Dept. of Geography and Environmental
Onsite Septic System Nitrogen Contributions to the Hood Canal Estuary. Department of Civil and Environmental Engineering, University of Washington
Onsite Septic System Nitrogen Contributions to the Hood Canal Estuary Michael Brett, Peter Steinberg, Julie Horowitz, Bryan Atieh, Garrett Leque, and Mark Benjamin Department of Civil and Environmental
Estuarine and Coastal Biogeochemistry
Estuarine and Coastal Biogeochemistry OCN 623 Chemical Oceanography 2 April 2015 Readings: Seitzinger& Mayorga(2008) Jeandelet al.(2011) 2015 Frank Sansone and S.V. Smith 1. Global coastal zone Outline
Reduced Nitrogen in Coastal Waters. Maren Voss Leibniz Institute for Baltic Sea Research Warnemünde, Germany
Reduced Nitrogen in Coastal Waters Maren Voss Leibniz Institute for Baltic Sea Research Warnemünde, Germany Topics of this talk N-cycling of coastal zones and human impact Eutrophication in the Baltic
Discovery Farms Minnesota N and P, what is happened in Farm Fields? Jerome Lensing January 9, 10, 11, 2018 AgVise Labs
Discovery Farms Minnesota N and P, what is happened in Farm Fields? Jerome Lensing January 9, 10, 11, 2018 AgVise Labs Jerome.lensing@hotmail.com Discovery Farms is a farmer led water quality research
Global Warming leads to Underwater Deserts. SUHAS.E.P I Year.Dept of Mechanical engineering RVCE
Global Warming leads to Underwater Deserts SUHAS.E.P I Year.Dept of Mechanical engineering RVCE Introduction Oxygen-poor waters occupy large volumes of the intermediate-depth eastern tropical oceans. Oxygen-poor
The Dead Zone. Use the notes provided (attached to this sheet) to answer the following questions.
The Dead Zone Use the notes provided (attached to this sheet) to answer the following questions. 1. Re-define Eutrophication: 2. What are the risks associated with an excess of Nitrogen? 3. What is a Dead
Using the Chesapeake Bay Program Interpolator to analyze Chesapeake Bay monitoring program data
Using the Chesapeake Bay Program Interpolator to analyze Chesapeake Bay monitoring program data Bill Romano & Mark Trice MD Dept. of Natural Resources bromano@dnr.state.md.us mtrice@dnr.state.md.us www.eyesonthebay.net
Overview of Gulf of Mexico Hypoxia Policy in Doug Daigle Lower Mississippi River Sub-basin Committee
Overview of Gulf of Mexico Hypoxia Policy in 2017 Doug Daigle Lower Mississippi River Sub-basin Committee Mississippi Water Resources Conference April 12, 2017 Jackson, MS Nutrient Yields from the Mississippi
EXAMINATION OF THE RELATIONSHIP OF RIVER WATER TO OCCURRENCES OF BOTTOM WATER WITH REDUCED OXYGEN CONCENTRATIONS IN THE NORTHERN GULF OF MEXICO
EXAMINATION OF THE RELATIONSHIP OF RIVER WATER TO OCCURRENCES OF BOTTOM WATER WITH REDUCED OXYGEN CONCENTRATIONS IN THE NORTHERN GULF OF MEXICO A Dissertation by LEILA BELABBASSI Submitted to the Office
Meredith Howard Karen McLaughlin Nikolay Nezlin
Meredith Howard Karen McLaughlin Nikolay Nezlin SCCWRP Objectives For Diversion Determine the fate of effluent nitrogen How quickly is effluent nitrogen consumed or transformed? Is effluent nitrogen being
Since 1985, the areal extent of hypoxia (<2 mg/l of dissolved
North America Nutrients and Hypoxia in the Gulf of Mexico An Update on Progress, 8 By C.S. Snyder Based on data presented here and in the U.S. Environmental Protection Agency s Science Advisory Board (EPA
Benthic Nutrient Cycling in Boston Harbor and Massachusetts Bay
Benthic Nutrient Cycling in Boston Harbor and Massachusetts Bay Anne Giblin, Charles Hopkinson & Jane Tucker The Ecosystems Center, Marine Biological Laboratory Woods Hole, MA 2543 September 22, 1999 Boston
Seasonal Anoxia over the Western Indian Continental Shelf
Seasonal Anoxia over the Western Indian Continental Shelf S.W.A. Naqvi, Hema Naik, A.K. Pratihary, M. Gauns, Witty D Souza, Gayatree Narvenkar, D.A. Jayakumar, M.S. Shailaja & P.V. Narvekar National Institute
Testimony to the U. S. Commission on Ocean Policy Great Lakes Regional Public Meeting September 24, Chicago, Illinois
Testimony to the U. S. Commission on Ocean Policy Great Lakes Regional Public Meeting September 24, 2002. Chicago, Illinois Dennis Keeney Senior Fellow, Institute for Agriculture and Trade Policy Minneapolis,
Atmospheric Nitrogen Deposition: An increasingly Important Source of new Nitrogen Supporting Coastal Eutrophication H Paerl 1, D. Whitall 2 and R. Dennis 3 1 UNC-CH CH Institute of Marine Sciences, Morehead
Ecosystem Consulting Service, Inc. July 15, P a g e
Prepared for: Normanoch Association Prepared by: Robert W. Kortmann, Ph.D. Ecosystem Consulting Service, Inc. July 17, 2014 Culver Lake Status 2014 (a brief mid-summer report) Cold water fish need water
Phosphorus Loading and Related Impacts in Southern Cayuga Lake. Dave Matthews Upstate Freshwater Institute Syracuse, NY
Phosphorus Loading and Related Impacts in Southern Cayuga Lake Dave Matthews Upstate Freshwater Institute Syracuse, NY Upstate Freshwater Institute (UFI) mission: advance freshwater research and protect
Patterns of Productivity
Patterns of Productivity Limitation by Light and Nutrients OCN 201 Biology Lecture 8 Primary Production - the production of biomass by autotrophs Secondary Production - the production of biomass by heterotrophs
Water Quality Monitoring Stations
Water Quality Monitoring Stations Eastern Basin Race Narrows Western Basin Central Basin The CT Department of Environmental Protection (CT DEP) conducts a water quality CT DEP monitoring program for the
Sensitivity of the Oxygen Dynamics in the Black Sea North Western Shelf to physical and biogeochemical processes : 3D model approach.
Sensitivity of the Oxygen Dynamics in the Black Sea North Western Shelf to physical and biogeochemical processes : 3D model approach titre Capet Arthur, Grégoire M, Beckers, JM.,Joassin P., Soetaert K.,
Biogeochemical Treatment of ARD at the Island Copper Mine Pit Lake
Biogeochemical Treatment of ARD at the Island Copper Mine Pit Lake Presented by: C. Pelletier, D. Muggli, M. Wen, and G. Poling Rescan Environmental Services Ltd. Rupert Inlet and Island Copper Mine Site
Nutrient Sources, Fate, Transport, and Effects Study of Galveston Bay, Texas Rachel Windham,
Nutrient Sources, Fate, Transport, and Effects Study of Galveston Bay, Texas Rachel Windham, Department of Marine Biology Texas A&M University at Galveston 2 Acknowledgements: Dr. Antonietta Quigg Members
Shen Zhen. New Territories. Stonecutters Island Kowloon. Victoria Harbor WM4 VM2 VM5 SM10. Hong Kong SM6. South China Sea.
Shen Zhen Pearl River Estuary Latitude ( o N) New Territories Stonecutters Island Kowloon Victoria Harbor WM4 VM7 SM VM VM Hong Kong Lantau Islannd SM9 WM Island EM3 South China Sea Longitude ( o E) Fig..
Feedback mechanisms between cyanobacterial blooms, transient hypoxia and benthic phosphorus regeneration in shallow coastal environments
Low oxygen environments in marine, estuarine and fresh waters 46th International Liege colloquium 5-9 May 214 Feedback mechanisms between cyanobacterial blooms, transient hypoxia and benthic phosphorus
Monitoring Update April 1, Northeast Aquatic Research George Knoecklein Hillary Kenyon Sabina Perkins
Monitoring Update April 1, 215 Northeast Aquatic Research George Knoecklein Hillary Kenyon Sabina Perkins Lake Monitoring Approach for 214 Tonight's discussion will focus on in-lake aspects: Assessment
Recovery of marine ecosystems: Regime shifts, resilience and shifting baselines
Recovery of marine ecosystems: Regime shifts, resilience and shifting baselines Jacob Carstensen Dept. of Bioscience, Aarhus University Phase I eutrophicatio n model Source: Cloern (001) Mar.Ecol.Prog.Ser.
MINIMAL FOOD WEB USE OF DEEPWATER HORIZON OIL IN LOUISIANA ESTUARINE FOOD WEBS
MINIMAL FOOD WEB USE OF DEEPWATER HORIZON OIL IN LOUISIANA ESTUARINE FOOD WEBS Brian Fry 1 D. Justic 1 Charles S. Milan 1 Phillip H. Riekenberg 1 Erick Swenson 1 R.E. Turner 1 Laurie C. Anderson 2 Carrol
BAY OF PLENTY COASTAL WATER QUALITY
Environment B O P Environmental Report 98/5 April 1998 BAY OF PLENTY COASTAL WATER QUALITY 1996-1997 Prepared by Stephen Park, Environmental Scientist Environment B O P P O Box 364 Whakatane NEW ZEALAND
Coastal Ecosystems: Saving Chesapeake Bay. Note the highest pigment concentrations (red) in coastal regions, especially estuaries
Coastal Ecosystems: Saving Chesapeake Bay Note the highest pigment concentrations (red) in coastal regions, especially estuaries Coastal Ecosystems: human impacts Humans severely impact the coastal zone
Watershed - Lake Model to Support TMDL Determinations for Lake Thunderbird
Watershed - Lake Model to Support TMDL Determinations for Lake Thunderbird 18 th Annual EPA Region 6 Stormwater Conference Workshop 5: TMDLs and You October 3, 2016 Oklahoma City, OK Lake Thunderbird Watershed-Lake
Oxygen in the Columbia River Estuary: Distribution and Dynamics. Pat Welle
1 Oxygen in the Columbia River Estuary: Distribution and Dynamics Observation Prediction Analysis Collaboration Pat Welle Additional Contributors: Antonio Baptista 1 Yvette Spitz 2 Jesse E. Lopez 1 G.
Today: Dinner Time! Yum Yum
Today: Productivity in the marine world Food webs and trophic levels Chemotrophic communities Dinner Time! Yum Yum Oceans are brimming with life Not a lot of diversity But a great abundance of organisms
Nutrient distributions and the interaction between coastal wetlands and the nearshore of Lake Ontario
Nutrient distributions and the interaction between coastal wetlands and the nearshore of Ontario Krista Chomicki and Gary Bowen International Association of Great s Research, 25 Type Durham Region Coastal
Monitoring Cruise Report
r/v Gunnar Thorson Monitoring Cruise Report Cruise No.: GT 248 Time: 19-23 January 2009 Area: The Sound, the Arkona Sea, the Belt Sea and the Kattegat National Environmental Research Institute Aarhus University
Little Bay Water Quality Report Card Spring 2014
Little Bay Water Quality Report Card Spring 2014 Little Bay is a small, semi-enclosed estuary located in the heart of Rockport, Texas. Estuaries, where freshwater from rivers and streams mixes with salt
HELSINKI COMMISSION HELCOM MONAS INDICATOR WORKSHOP 1/2004 Monitoring and Assessment Group First Meeting Helsinki, Finland, May 2004
HELSINKI COMMISSION HELCOM MONAS INDICATOR WORKSHOP 1/2004 Monitoring and Assessment Group First Meeting Helsinki, Finland, 12-14 May 2004 Agenda Item 2 HELCOM indicators Document code: 2/16 Date: 10.5.2004
Chromophoric Dissolved Organic Matter (CDOM) in United States Estuaries. Robert F. Chen, Bernie Gardner, Wei Huang & Francesco Peri
Chromophoric Dissolved Organic Matter (CDOM) in United States Estuaries Robert F. Chen, Bernie Gardner, Wei Huang & Francesco Peri CDOM in Coastal Waters Chromophoric Dissolved Organic Matter (CDOM) Absorbs
The influence of coastal oceans and seas on nutrient limitation in estuaries
The influence of coastal oceans and seas on nutrient limitation in estuaries Robert Howarth Ecology & Evolutionary Biology, Cornell University and The Ecosystems Center, MBL, Woods Hole September 13, 2017
2009/2010 Water Column Overview, Red Tide Update, and Bay Eutrophication Model 2010 Results. OMSAP Meeting June 30, 2011.
29/21 Water Column Overview, Red Tide Update, and Bay Eutrophication Model 21 Results OMSAP Meeting June 3, 211 Scott Libby Contributions from D. Anderson, D. Borkman, C.S. Chen, R. Geyer, and C. Oviatt
Chapter Seven: Factors Affecting the Impact of Nutrient Enrichment on the Lower Estuary
Chapter Seven: Factors Affecting the Impact of Nutrient Enrichment on the Lower Estuary As presented in Chapter Six, the water quality data for the upper stations of the tidal freshwater Potomac Estuary
Nutrient Dynamics at the Estuarine Sediment-Water Interface during Large Pulses of High Nitrate Mississippi River Water
Nutrient Dynamics at the Estuarine Sediment-Water Interface during Large Pulses of High Nitrate Mississippi River Water ERIC ROY, JOHN WHITE, SIBEL BARGU, EMILY SMITH, & NATHAN NGUYEN LOUISIANA STATE UNIVERSITY
Agriculture and the Gulf of Mexico Hypoxia Issue
Agriculture and the Gulf of Mexico Hypoxia Issue Presented to the Nutrients and Environment Conference, Mankato, MN February 18, 2010 by C.S. Snyder, PhD, CCA Nitrogen Program Director EPA s Scope of fthe
Watershed and Water Quality Modeling to Support TMDL Determinations Lake Oologah
Watershed and Water Quality Modeling to Support TMDL Determinations Lake Oologah 26 th Annual Conference Oklahoma Clean Lakes and Watersheds Association (OCLWA) April 5-6, 2017 Stillwater, Oklahoma Lake
Spring Nutrient Flux to the Gulf of Mexico and Nutrient Balance in the Mississippi River Basin
Spring Nutrient Flux to the Gulf of Mexico and Nutrient Balance in the Mississippi River Basin C.S. Snyder, PhD, CCA Nitrogen Program Director, Conway, AR T. Scott Murrell, PhD Director, North American
Examining Human Impacts on Global Biogeochemical Cycling via the Coastal Zone & Ocean Margins
Examining Human Impacts on Global Biogeochemical Cycling via the Coastal Zone & Ocean Margins L. Talaue-McManus Rosenstiel School of Marine & Atmospheric Science University of Miami JGOFS Open Science
Development of indicators of eutrophication for the Eastern Gulf of Finland
Development of indicators of eutrophication for the Eastern Gulf of Finland Dr. Tatjana Eremina Russian State Hydrometeorological University BSAP targets for the Gulf of Finland Indicator of eutrophication
Global Biogeochemical cycles and Ocean Productivity
Global Biogeochemical cycles and Ocean Productivity Biological Oceanography Recall: goal is not to understand the biology of one particular organism (or group), but to understand organisms fit into the
5.0 PHYTOPLANKTON PHYSIOLOGY. Luke Twomey Christopher P. Buzzelli Hans W. Paerl. 5.1 Introduction
5. PHYTOPLANKTON PHYSIOLOGY Luke Twomey Christopher P. Buzzelli Hans W. Paerl 5.1 Introduction Phytoplankon production is the primary source of organic carbon in the water column of the NRE (Matson and
THE IMPACTS OF THE MISSISSIPPI RIVER AND ITS DELTA ON THE OCEANOGRAPHY, ECOLOGY AND ECONOMY OF THE GULF OF MEXICO LARGE MARINE ECOSYSTEM
THE IMPACTS OF THE MISSISSIPPI RIVER AND ITS DELTA ON THE OCEANOGRAPHY, ECOLOGY AND ECONOMY OF THE GULF OF MEXICO LARGE MARINE ECOSYSTEM While it has long been recognized that the Mississippi River plays
What We Know About the Water Quality of the Florida Keys National Marine Sanctuary
What We Know About the Water Quality of the Florida Keys National Marine Sanctuary Joseph N. Boyer This report serves as a summary of our efforts to date in the execution of the Water Quality Monitoring
Monitoring Cruise Report
r/v Gunnar Thorson Monitoring Cruise Report Cruise no.: GT 247 Time: 15-19 September 2008 Area: The Sound, the Arkona Sea, the Belt Sea and the Kattegat National Environmental Research Institute University
FILLING THE GAP: DISSOLVED OXYGEN MONITORING IN NARRAGANSETT BAY
FILLING THE GAP: DISSOLVED OXYGEN MONITORING IN NARRAGANSETT BAY Christopher F. Deacutis, Narragansett Bay Estuary Program, URI Coastal Institute Keywords: Narragansett Bay, intermittent hypoxia, volunteer
Interannual variations of nutrients and primary production over the southeastern Beirng Sea shelf during spring of 1997,1998,and 1999
Interannual variations of nutrients and primary production over the southeastern Beirng Sea shelf during spring of 1997,1998,and 1999 TaeKeun Rho,Terry E. Whitledge, and John J. Goering Institute of Marine
Future climate scenarios for phosphorus and nitrogen dynamics in the Gulf of Riga
Future climate scenarios for phosphorus and nitrogen dynamics in the Gulf of Riga Bärbel Müller Karulis, Latvian Institute of Aquatic Ecology Juris Aigars, Latvian Institute of Aquatic Ecology In colaboration
GREAT LAKES AND WATER QUALITY A REGIONAL PERSPECTIVE. Nandita Basu & Philippe Van Cappellen
GREAT LAKES AND WATER QUALITY A REGIONAL PERSPECTIVE Nandita Basu & Philippe Van Cappellen LAURENTIAN GREAT LAKES (LGL) 244,106 km2 22,671 km3 80% North America s surface freshwater 17,000 km shoreline