creative strategies for wetland restoration
TRANSCRIPT
Crea%vestrategiesforwetlandrestora%on
SarahHammanCenterforNaturalLandsManagement
Reedcanarygrass(Phalarisarundinacea)dominateswetlandandriparianareasacrosstheU.S.• Considerednon-na%veinPNWbutna%ve
inotherareasofU.S.• Reducesna%veplantandinvertebrate
diversity
Treatment TreatmentDescriptionMow-Burn(MB) MowlateJuly,whenseedheadsareforming
BurnSeptember-October(weather-dependent)Mow-Herbicide(MH) MowearlyJulywhenplantisbolting,seedheadsarestartingtoform
SpraySeptember,whenthere’snewgreengrowthHerbicide-Burn(HB) SprayAugust,whenthere’sactivegreengrowth
BurnSeptember-October(weather-dependent)Mow-Herbicide-Burn(MHB) MowearlyJulywhenplantisbolting,seedheadsarestartingtoform
SpraynewgrowthinearlyAugust,whenthere’sactivegreengrowthBurninSept-October(weather-dependent)
Control Notreatment
RCGRemovalTreatments
• Alltreatmentswereappliedin10mx10mplotsin3sites:Watkins,Johnson,TrainingArea14• Treatmentsappliedin2011,2012,2013• In2014,20Juncussupiniformisplantsplantedineachplot• Monitoredvegeta%onin2014,2015,2016in8-1m2quadrats/plot
MH
MB
MHBHB
C
MB HB MHBMHC
MH
MB
MHB HB C
TrainingArea14JohnsonMarshWatkinsMarsh
Treatmenteffectsonreedcanarygrass
0"
10"
20"
30"
40"
50"
60"
70"
80"
90"
100"
Control" MB" HB" MH" MHB"
Percen
t"cover"re
ed"canary"grass"
Reed"canary"grass"Other"NonBnaCves"
a"a"
b" b"
b"
Treatmenteffectsonvegeta%on
0"
1"
2"
3"
4"
5"
6"
Control" MB" BH" MH" MBH"
Species"R
ichne
ss"
Na<ve"Richness"
Nonna<ve"Richness"
MBH>Na<ve:Control>Na<ve"p=0.0371"
a"
b
a"
ab"ab"
HB
0"10"20"30"40"50"60"70"80"90"
100"
Control" MB" HB" MH" MHB"
Percen
t"Co
ver"Thatch"
0"5"
10"15"20"25"30"35"40"45"
Control" MB" HB" MH" MHB"
Dep
th"(cm)"
a"
b"
b"b"
b"Thatch
Control MB MH HB MHB
WatkinsMarsh2014
Juncussupiniformissurvival
0"
10"
20"
30"
40"
50"
60"
70"
80"
90"
MB" HB" MH" MBH"
Percen
t"survival"
ab ab
b
a
Coconutcoirpre-vegetatedmats
StaffordCreekCorrec%onalCenterAquacultureFacility Fishtank–Koi!
Nitrifica%ontank
Pla`ormbedsformats
Filtra%ontanks
Pre-vegetatedmat
RCGpre-treatmentareas-eitherMow-HerbicideorMow-Solarize
1mx1mmonitoringplot
3m
3m4m
12m
Deep
Shallow
