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LEADER 03857cam 2200541Ii 4500
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ocn869832901
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OCoLC
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20140310011119.0
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m o d
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140204s2013 ncua ob 000 0 eng d
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043
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049
a| EREE
090
a| QH105.N8
100
1
a| Wejrowski, Mark,
e| author.
?| UNAUTHORIZED
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1
0
a| Response of a Spartina patens-dominated oligohaline marsh to nitrogen enrichment in coastal North Carolina, USA /
c| by Mark Wejrowski.
264
1
a| [Greenville, N.C.] :
b| [East Carolina University],
c| 2013.
300
a| 58 pages :
b| illustrations (some color)
336
a| text
b| txt
2| rdacontent
337
a| computer
b| c
2| rdamedia
338
a| online resource
b| cr
2| rdacarrier
347
a| text file
b| PDF
c| 1.50Mb
2| rda
538
a| System requirements: Adobe Reader.
538
a| Mode of access: World Wide Web.
502
b| M.S.
c| East Carolina University
d| 2013.
500
a| Presented to the faculty of the Department of Biology.
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a| Advisor: Enrique Reyes.
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a| Title from PDF t.p. (viewed February 19, 2014).
520
3
a| Coastal marshes are highly productive ecosystems that play a significant role in the global carbon budget. Anthropogenic alterations to coastal landscapes can significantly impact these marsh ecosystems, though the actual loss of ecosystem functioning may depend on the type of marsh being impacted. Nitrogen loading into coastal environments has accelerated with increased use of fertilizers for agricultural production. Previous work has demonstrated that some marsh plants respond to nitrogen inputs by allocating more biomass into aboveground stems and leaves while reducing belowground biomass. These changes could diminish the organic matter pool in coastal marshes while also making them more susceptible to erosion. The goal of this study was to fertilize plots in a Spartina patens-dominated oligohaline marsh with varying concentrations of urea applied throughout one growing season and assess the response in aboveground and belowground plant biomass and decomposition. Aboveground plant clippings and soil cores were collected to assess the changes in above- and belowground biomass among the treatments throughout time and to also assess tissue nitrogen and organic matter content. Litter bags were also placed at the soil surface of the experimental plots to determine rates of decomposition throughout the study. Neither aboveground nor belowground biomass was significantly affected by nitrogen application, and nitrogen assimilation into plant tissue did not vary across the treatments. Decomposition was also relatively similar across the treatments, though there were seasonal effects on litter mass loss. Our findings suggest that oligohaline marshes, specifically those dominated by S. patens, are not limited by nitrogen to the same extent as salt marshes.
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a| Includes bibliographical references.
650
0
a| Marsh ecology
z| North Carolina.
=| ^A18117
650
0
a| Marshes
z| North Carolina.
=| ^A9300
650
0
a| Spartina patens
z| North Carolina.
=| ^A1181134
653
a| Ecology
653
a| Biology
653
a| Natural resource management
700
1
a| Reyes, Enrique,
e| degree supervisor.
=| ^A1149046
710
2
a| East Carolina University.
b| Department of Biology.
=| ^A637467
856
4
0
z| Access via ScholarShip
u| http://hdl.handle.net/10342/4324
949
o| jgml
994
a| C0
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596
a| 1 4
998
a| 3422641
999
a| CLICK ON WEB ADDRESS
w| ASIS
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i| 3422641-1001
l| JNET
m| JOYNER
r| Y
s| Y
t| JNE3ETD
u| 2/4/2014
x| ETD
z| JERESOURCE
999
a| CLICK ON WEB ADDRESS
w| ASIS
c| 1
i| 3422641-2001
l| HSLELEC
m| HSL
r| Y
s| Y
t| HEETD
u| 2/4/2014
x| ETD
z| HERESOURCE