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Jamaica Bay Blue Carbon Project 2015
By Stephen Kovari and Mohammad Reza
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What is a Marsh? ● A tract of low, wet, soft land that is temporarily, or
permanently, covered with water, characterized by aquatic, grass like vegetation; swamp; bog; morass; and fens
● Types of Marshes ○ Tidal ■ Freshwater ■ Salt
○ Non-tidal
Clapper Rail Photo by Stephen Kovari
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Jamaica Bay, New York The bay is located between Queens and Kings counties in New York City. Approximately 8 miles long and 4 miles wide - covering approximately 26 total square miles.
In less than 70 years between 1924 to 1994, the bay has lost 1306 acres of marshland due to dredging and filling, development and human activity.
(New York State Department of Environmental Conservation)
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Threats to Marshes ● Monocultures - when a single species takes
over a region of vegetation.
● Pollution
● Development
● Sea level rise
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● Storm protection
● Cleaner water
● Wildlife habitat
● Carbon Storage
Why Marshes Matter
Yellow-crowned Night Herons Photo by Stephen Kovari
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Why Core the Marsh? ● Cores can tell us about the history of the marsh ● We test for:
○ Climate changes in the past (helping us to predict the future)
○ Amount of Carbon and Nitrogen Isotopes ○ Signs of pollution and human impact ○ Levels of organic and inorganic matter
Dr. Dorothy Peteet Outline PaleoEcology in Jamaica Bay Marsh 2014
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Definitions
Peat - organic matter that contains carbon. Carbon sinking - the process by which carbon is removed from the atmosphere “Blue Carbon” - carbon that is sequestered in coastal/marine ecosystems
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Question How have the carbon sequestration capabilities of Jamaica Bay marshes been changing over time, and what drives these changes?
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Jamaica Bay Study Sites 2014 - Jamaica Bay, New York
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The Marshes
JoCo
Yellow Bar
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Methodology
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Loss On Ignition (LOI)
LOI (Loss on Ignition) analysis is used to determine the organic matter content (%OM) of a soil sample. It is a non-chemical process in which soil sample is dried and then burned to zero-percent organic matter.
http://www.sfu.ca/soils/lab_documents/Estimation_Of_Organic_Matter_By_LOI.pdf
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LOI Test ● Weighing
● Drying
● Burning
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Results - Yellow Bar and JoCo 2000
@1825AD
@1450AD
Inorganic Matter Prominence
Inorganic Matter Prominence Inorganic
Inorganic
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Sand, Silt and Clay is brought in from the ocean currents – so we looked at Paleogeography
Jamaica Bay 2015 (Google Earth)
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Jamaica Bay 1700s and 1800s
1700s
1800s
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Jamaica Bay 1890s - Current
Breezy Point Spit Transformation
1890
1948 Army Corps of Engineers
Current
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Borrow Pits • Sandmining for commercial construction
aggregate and for landfilling projects has left deep depressions below the bay floor.
• These characteristics can result in stratification, reduced current velocities, and poor water exchange within the pits.
• Poor circulation often leads to impaired sediment quality and water quality from the accumulation of fine grain sediments and depressed dissolved oxygen concentrations.
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Jamaica Bay
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Conclusion/Discussion
How have the carbon sequestration capabilities of Jamaica Bay marshes been changing over time?
Inorganic matter has been stifled over the past 250 years
What drives these changes? 1. Reduction in current flow of ocean water into
Jamaica Bay. 2. Deep Borrow Pits that alter water flow within
the marshes
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Acknowledgements
- Dr. Dorothy Peteet NASA GISS/Lamont Doherty
- Matthew Pearce GISS New York - Miss Stern, North Bergen STEM Academy - New York City Research Initiative - Goddard Space Flight Center
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Blue Carbon Project 2015
Photo%of%%Boat)Tail%Grackle%©%Stephen%Kovari%taken%at%%Jamaica%Bay%NY%2014%
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Questions? Feel free to contact us if any come to mind at a later point in time: - Mr. Stephen Kovari [email protected] - Mr. Mohammad Reza
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References Definition of marshes: http://oceanservice.noaa.gov/facts/saltmarsh.html Jamaica Bay: http://www.dec.ny.gov/lands/5489.html Wigand, C. et. al.: Environ Monit Assess (2007) 131:71–81 DOI 10.1007/s10661-006-9457-5 MAPS http://www.loc.gov/maps/collections http://hcl.harvard.edu/libraries/maps/