National Wetlands Research Center Marsh Dieback Syndrome (MaDS)
Signature Key Slide 2 National Wetlands Research Center 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. Slide 3 National
Wetlands Research Center Impacted by Brown Marsh: IEM BM2 USBM USDM
IUS IOW IAB Non-impacted Areas: US OW AB EM SS FO RS Upland UB UR
USS UF UU Modifiers: x s h o k SS3SS4SSgSS1 FO1FO3FO4 USS3USS4USS1
UF3UF4UF1 Wetland Marsh Dieback Syndrome (MaDS) Signature Key BACK
TO INTRODUCTION Slide 4 National Wetlands Research Center
Non-Impacted BACK Slide 5 Impacted National Wetlands Research
Center BACK Slide 6 Classification Modifiers National Wetlands
Research Center BACK Slide 7 EM example (Aerial Photography) EM
example (Oblique Photo) EM example (Ground Photo) EM Emergent Marsh
BACK National Wetlands Research Center Slide 8 EM_CIR BACK Slide 9
EM_OBL BACK Slide 10 EM_GRD BACK Slide 11 SS1 example (Aerial
Photography) SS1 example (Oblique Photo) SSg example (Aerial
Photography) SSg example (Oblique Photo) SSg example (Ground Photo)
SS Scrub Shrub BACK National Wetlands Research Center Slide 12
SS1_CIR BACK Slide 13 SS1_OBL BACK Slide 14 SSg_CIR BACK Slide 15
SSg_OBL BACK Slide 16 SSg_GRD BACK Slide 17 FO1 example (Aerial
Photography) FO1 example (Oblique Photo) FO1 example (Ground Photo)
FO Forest BACK National Wetlands Research Center Slide 18 FO1_CIR
BACK Slide 19 FO1_OBL BACK Slide 20 FO1_GRD BACK Slide 21 AB
Aquatic Bed BACK National Wetlands Research Center Slide 22 OW
example (Oblique Photo) OW example (Ground Photo) OWx example
(Oblique Photo) OW Open Water BACK National Wetlands Research
Center Slide 23 OW_OBL BACK Slide 24 OW_GRD BACK Slide 25 OWx_OBL
BACK Slide 26 US example (Oblique Photo) US example (Ground Photo)
US Unconsolidated Shore BACK National Wetlands Research Center
Slide 27 US_OBL BACK Slide 28 US_GRD BACK Slide 29 RSk example
(Ground Photo) RS Rocky Shore BACK National Wetlands Research
Center Slide 30 RSk_GRD BACK Slide 31 USS1 example (Ground Photo)
USS Upland Scrub Shrub BACK National Wetlands Research Center Slide
32 USS1_GRD BACK Slide 33 UF1 example (Aerial Photography) UF1
example (Oblique Photo) UF1 example (Ground Photo) UF Upland Forest
BACK National Wetlands Research Center Slide 34 UF1_CIR BACK Slide
35 UF1_OBL BACK Slide 36 UF1_GRD BACK Slide 37 UR example (Aerial
Photography) UR example (Ground Photo) UR Upland Range BACK
National Wetlands Research Center Slide 38 UR_CIR BACK Slide 39
UR_GRD BACK Slide 40 UB example (Aerial Photography) UB example
(Oblique Photo) UB Upland Barren BACK National Wetlands Research
Center Slide 41 UB_CIR BACK Slide 42 UB_OBL BACK Slide 43 UU
example (Aerial Photography) UU example (Ground Photo) UUo example
(Aerial Photography) UU Upland Urban BACK National Wetlands
Research Center Slide 44 UU_CIR BACK Slide 45 UU_GRD BACK Slide 46
UUo_CIR BACK Slide 47 IEM example (Aerial Photography) IEM example
(Oblique Photo) IEM example (Ground Photo) IEM Slightly impacted
emergent marsh vegetation. BACK National Wetlands Research Center
Slide 48 IEM_CIR BACK Slide 49 IEM_OBL BACK Slide 50 IEM_GRD BACK
Slide 51 BM2 example (Aerial Photography) BM2 example (Oblique
Photo) BM2 example (Ground Photo) BM2 Moderately impacted emergent
marsh with intact vegetation signature. BACK National Wetlands
Research Center Slide 52 BM2_CIR BACK Slide 53 BM2 _OBL BACK Slide
54 BM2 _GRD BACK Slide 55 USBM example (Aerial Photography) USBM
example (Oblique Photo) USBM example (Ground Photo) USBM
Unconsolidated shore/severely impacted emergent marsh. BACK
National Wetlands Research Center Slide 56 USBM_CIR BACK Slide 57
USBM_OBL BACK Slide 58 USBM_GRD BACK Slide 59 USDM example (Aerial
Photography) USDM example (Oblique Photo) USDM example (Ground
Photo) USDM Unconsolidated shore/dead emergent marsh. BACK National
Wetlands Research Center Slide 60 USDM_CIR BACK Slide 61 USDM_OBL
BACK Slide 62 USDM_GRD BACK Slide 63 IUS example (Aerial
Photography) IUS example (Oblique Photo) IUS example (Ground Photo)
IUS Impacted, unconsolidated shore. BACK National Wetlands Research
Center Slide 64 IUS_CIR BACK Slide 65 IUS_OBL BACK Slide 66 IUS_GRD
BACK Slide 67 IOW Impacted open water. BACK National Wetlands
Research Center Slide 68 IAB example (Ground Photo) IAB Impacted
aquatic bed. BACK National Wetlands Research Center Slide 69
IAB_GRD BACK
