Colonization of wetland habitat: Succession in restored...
Transcript of Colonization of wetland habitat: Succession in restored...
Colonization of wetland habitat: Succession in restored habitats
Merel Soons and Jos Verhoeven
Utrecht University
Dennis Whigham
Smithsonian Environmental Research Center
Mary Leck (Rider University)
Dispersal potential of a tidal river wetlands: Colonization of a created tidal freshwater marsh on the Delaware River, USA
Metthea Yepsen (University of Maryland)
Andrew Baldwin (U. MD), Elizas McFarland , Marina LaForgia and Dennis Whigham (Smithsonian Environmental Research Center)
Vegetation patterns in prior converted, restored, and reference wetlands in the U.S. Mid-Atlantic Coastal Plain
Karin Kettenring (Utah State University)
Eric Hazelton (Utah State), Sally Gallagher (U. Wisconsin and SERC), Heather Baron (Oregon State University and SERC), Melissa McCormick and Dennis Whigham (SERC)
Reproduction, dispersal, emergence, and establishment of Phragmites australis in disturbance in Chesapeaek Bay tidal wetlands
Susan Galatowitsch (University of Minnesota)
Barriers to colonization of sedge-dominated wetlands
• Created: no historical wetland at
restoration site • Restored: degraded (altered) wetland at site • Enhanced: natural wetland present but dominated by invasive species
Prior converted wetland Eastern Shore, MD
Restored wetland Eastern Shore, MD
Tidal freshwater wetland Patuxent River , MD
Rhode River, MD Brackish tidal wetland
1970
Rhode River 2009
Does the amount of organic matter present at the time of restoration influence vegetation patterns, including colonization?
Is a seed bank present at the time of the restoration?
Distance Separating Samples (m)(maximum for distance class)
0 1000 2000 3000 4000 5000 6000
Mora
n's
I(j
ackkn
ife
d o
ver
loci +
SE
)
-0.2
0.0
0.2
0.4
0.6
0.8
1.0
1.2
McCormick, Kettenring, Baron and Whigham. J. Ecology. 2011
Dispersal of seeds and vegetative propagules
Substantial genetic variation within and among patches:
91% of patches had >1 genotype
McCormick, Kettenring, Baron, and Whigham. 2010. Wetlands
Platanthera lacera
Ragged fringed orchid
Spiranthes ovalis var. erostellata
October Ladies’ Tresses
Photo courtesy of A.L. Gibson
Mary Leck (Rider University)
Dispersal potential of a tidal river wetlands: Colonization of a created tidal freshwater marsh on the Delaware River, USA
Metthea Yepsen (University of Maryland)
Andrew Baldwin (U. MD), Elizas McFarland , Marina LaForgia and Dennis Whigham (Smithsonian Environmental Research Center)
Vegetation patterns in prior converted, restored, and reference wetlands in the U.S. Mid-Atlantic Coastal Plain
Karin Kettenring (Utah State University)
Eric Hazelton (Utah State), Sally Gallagher (U. Wisconsin and SERC), Heather Baron (Oregon State University and SERC), Melissa McCormick and Dennis Whigham (SERC)
Reproduction, dispersal, emergence, and establishment of Phragmites australis in disturbance in Chesapeaek Bay tidal wetlands
Susan Galatowitsch (University of Minnesota)
Barriers to colonization of sedge-dominated wetlands