Marsh Dieback Syndrome Signature Key

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Marsh Dieback Syndrome (MaDS) Signature Key
National Wetlands Research Center
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Marsh Dieback Syndrome (MaDS) Signature Key The
objective of this signature key is to provide a
consistent method for photointerpreters to
delineate important features of healthy and
affected marsh. This key will assist the user in
understanding marsh classification using
high-altitude color infrared photography as
applied to the Marsh Dieback Syndrome. The
process of developing a key iterates between
field observations and laboratory analysis of the
photography. Ground level field observations were
carried-out primarily during the winter of 2001
with additional observations made at other times.
Ongoing oblique, low-altitude monthly aerial
observations have been conducted continuously
since the summer of 2000. Whenever possible, the
photos in this signature key refer to the same
dates and locations in order to provide
consistency across the scale of photography.
National Wetlands Research Center
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Marsh Dieback Syndrome (MaDS) Signature Key
Impacted by Brown Marsh
Non-impacted Areas
Upland
Wetland
IEM
US
UB
BM2
OW
USBM
UR
AB
USDM
USS
USS3
USS4
USS1
EM
IUS
UF3
UF4
UF1
UF
SS
SS3
SS4
SSg
SS1
IOW
UU
FO
FO1
FO3
FO4
IAB
RS
Modifiers
x
s
h
o
k
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Non-Impacted
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Impacted
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Classification Modifiers
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EM Emergent Marsh

EM example (Aerial Photography) EM example
(Oblique Photo) EM example (Ground Photo)
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EM_CIR
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EM_OBL
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EM_GRD
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SS Scrub Shrub

SS1 example (Aerial Photography) SS1 example
(Oblique Photo) SSg example (Aerial
Photography) SSg example (Oblique Photo) SSg
example (Ground Photo)
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SS1_CIR
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SS1_OBL
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SSg_CIR
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SSg_OBL
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SSg_GRD
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FO Forest

FO1 example (Aerial Photography) FO1 example
(Oblique Photo) FO1 example (Ground Photo)
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FO1_CIR
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FO1_OBL
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FO1_GRD
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AB Aquatic Bed

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OW Open Water

OW example (Oblique Photo) OW example (Ground
Photo) OWx example (Oblique Photo)
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OW_OBL
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OW_GRD
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OWx_OBL
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US Unconsolidated Shore

US example (Oblique Photo) US example (Ground
Photo)
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US_OBL
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US_GRD
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RS Rocky Shore

RSk example (Ground Photo)
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RSk_GRD
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USS Upland Scrub Shrub

USS1 example (Ground Photo)
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USS1_GRD
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UF Upland Forest

UF1 example (Aerial Photography) UF1 example
(Oblique Photo) UF1 example (Ground Photo)
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UF1_CIR
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UF1_OBL
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UF1_GRD
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UR Upland Range

UR example (Aerial Photography) UR example
(Ground Photo)
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UR_CIR
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UR_GRD
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UB Upland Barren

UB example (Aerial Photography) UB example
(Oblique Photo)
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UB_CIR
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UB_OBL
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UU Upland Urban

UU example (Aerial Photography) UU example
(Ground Photo) UUo example (Aerial Photography)
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UU_CIR
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UU_GRD
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UUo_CIR
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IEM Slightly impacted emergent marsh vegetation.

IEM example (Aerial Photography) IEM example
(Oblique Photo) IEM example (Ground Photo)
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IEM_CIR
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IEM_OBL
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IEM_GRD
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BM2 Moderately impacted emergent marsh with
intact vegetation signature.

BM2 example (Aerial Photography) BM2 example
(Oblique Photo) BM2 example (Ground Photo)
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BM2_CIR
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BM2 _OBL
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BM2 _GRD
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USBM Unconsolidated shore/severely impacted
emergent marsh.

USBM example (Aerial Photography) USBM example
(Oblique Photo) USBM example (Ground Photo)
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USBM_CIR
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USBM_OBL
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USBM_GRD
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USDM Unconsolidated shore/dead emergent marsh.

USDM example (Aerial Photography) USDM example
(Oblique Photo) USDM example (Ground Photo)
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USDM_CIR
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USDM_OBL
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USDM_GRD
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IUS Impacted, unconsolidated shore.

IUS example (Aerial Photography) IUS example
(Oblique Photo) IUS example (Ground Photo)
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IUS_CIR
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IUS_OBL
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IUS_GRD
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IOW Impacted open water.

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IAB Impacted aquatic bed.

IAB example (Ground Photo)
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IAB_GRD
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