A5019843634- Coastal wetland ecosystem dynamics
- Coastal and Marine Dynamics
- Peatlands and Wetlands Ecology
- Plant and Fungal Species Descriptions
- Land Use and Ecosystem Services
- Geology and Paleoclimatology Research
- Marine and coastal plant biology
- Isotope Analysis in Ecology
- Oil Palm Production and Sustainability
- Geological formations and processes
- Tropical and Extratropical Cyclones Research
- Remote Sensing and LiDAR Applications
- Conservation, Biodiversity, and Resource Management
- Soil erosion and sediment transport
- Coral and Marine Ecosystems Studies
- Cassava research and cyanide
- Plant responses to water stress
- Agricultural and Environmental Management
- Marine and fisheries research
- Pacific and Southeast Asian Studies
- Coastal and Marine Management
- Soil Moisture and Remote Sensing
- Fire effects on ecosystems
- Constructed Wetlands for Wastewater Treatment
- Ecology and biodiversity studies
Macquarie University
2018-2024
United States Geological Survey
2015-2024
U.S. Geological Survey, Wetland and Aquatic Research Center
2016-2021
Pacific Southwest Research Station
2007-2019
VA Connecticut Healthcare System
2017
Massachusetts General Hospital
2017
Harvard University
2017
Yale University
2017
University of California, Los Angeles
2017
Yale New Haven Hospital
2017
Mangrove forests provide many ecosystem services but are among the world's most threatened ecosystems. Mangroves vary substantially according to their geomorphic and sedimentary setting; while several conceptual frameworks describe these settings, spatial distribution has not been quantified. Here, we present a new global mangrove biophysical typology show that, based on 2016 extent, 40.5% (54,972 km2) of systems were deltaic, 27.5% (37,411 estuarine 21.0% (28,493 open coast, with lagoonal...
Much uncertainty exists about the vulnerability of valuable tidal marsh ecosystems to relative sea level rise. Previous assessments resilience rise, which marshes can adjust by sediment accretion and elevation gain, revealed contrasting results, depending on contemporary or Holocene geological data. By analyzing globally distributed data, we found that increases in parity with seemingly confirming previously claimed resilience. However, subsidence substrate shows a nonlinear increase...
Abstract Mangroves are one of the most carbon‐dense forests on Earth and have been highlighted as key ecosystems for climate change mitigation adaptation. Hundreds studies investigated how mangroves fix, transform, store, export carbon. Here, we review synthesize previously known emerging carbon pathways in mangroves, including gains (woody biomass accumulation, deadwood soil sequestration, root litterfall production), transformations (food web transfer through herbivory, decomposition),...
Abstract Carbon (C) standing stocks, C mass balance, and soil burial in tidal freshwater forested wetlands (TFFW) TFFW transitioning to low‐salinity marshes along the upper estuary are not typically included “blue carbon” accounting, but may represent a significant sink. Results from two salinity transects Waccamaw Savannah rivers of U.S. Atlantic Coast show that total stocks were 322–1,264 Mg C/ha among all sites, generally shifting greater storage as increased. balance inputs (litterfall,...
Mangrove wetlands provide ecosystem services for millions of people, most prominently by providing storm protection, food and fodder. are also valuable ecosystems promoting carbon (C) sequestration storage. However, loss mangrove these a global concern, prompting the restoration creation as potential solution. Here, we investigate soil surface elevation change, its components, in created over 25 year developmental gradient. All were exceeding current relative sea-level rise rates (2.6 mm...
Coastal wetlands significantly contribute to global carbon storage potential. Sea-level rise and other climate-change-induced disturbances threaten coastal wetland sustainability capacity. It is critical that we understand the mechanisms controlling loss so can predict manage these resources in anticipation of climate change. However, our current understanding control soil organic matter decomposition, particular impacts elevated salinity, are limited, literature reports contradictory. In an...
Mangrove forests are among the world's most productive and carbon-rich ecosystems. Despite growing understanding of factors controlling mangrove forest soil carbon stocks, there is a need to advance speed peat development beneath maturing forests, especially in created restored that intended compensate for ecosystem functions lost during conversion other land uses. To better quantify rate organic matter created, we measured changes across 25-yr chronosequence. We compared properties adjacent...
Abstract Coastal marshes take up atmospheric CO 2 while emitting , CH 4 and N O. This ability to sequester carbon (C) is much greater for wetlands on a per area basis than from most ecosystems, facilitating scientific, political, economic interest in their value as greenhouse gas sinks. However, the balance of Gulf Mexico particularly understudied. We describe net ecosystem exchange (NEE c ) using eddy covariance (EC) comparison with fluxes O chambers brackish freshwater Louisiana, USA. From...
Coastal wetland responses to sea-level rise are greatly influenced by biogeomorphic processes that affect surface elevation. Small changes in elevation relative sea level can lead comparatively large ecosystem structure, function, and stability. The table-marker horizon (SET-MH) approach is being used globally quantify the contributions of affecting change. Historically, SET-MH measurements have been obtained at local scales address site-specific research questions. However, face accelerated...
Abstract Mangroves are significant carbon (C) sinks and ecological engineers as they accumulate sediments increase soil surface elevation. Thus, the forest management practice of thinning may not only alter structure, but also facilitate new biogeomorphological processes that affect development. Thinning create additional opportunity for understorey species, such light‐demanding Acanthus ilicifolius , to become a more prominent vegetation component mangroves, which further elevation...
Abstract Extensive hydrologic modifications in coastal regions across the world have occurred to support infrastructure development, altering function of many wetlands. Wetland restoration success is dependent on existence regimes that development appropriate soils and growth persistence wetland vegetation. In Florida, United States, Comprehensive Everglades Restoration Program ( CERP ) seeks restore, protect, preserve water resources greater region. Herein we describe vegetation dynamics a...
In Hawai'i, mangrove trees are introduced species that can rapidly colonize many nearshore environments. Mangroves have been on O'ahu, and Rhizophora mangle in particular has created numerous problems led to several removals increased interest long-term management of mangroves. The objective this project was quantify current locations mangroves their historical rate expansion O'ahu. We used the Geographic Information System (GIS) map from digitized air photographs six time periods:...
Abstract Questions Does the presence of herbaceous vegetation affect establishment success mangrove tree species in transition zone between subtropical coastal forests and marshes? How do plant–plant interactions this respond to variation two primary environmental drivers? Location Subtropical region southern United States. Methods We conducted a greenhouse study better understand how abiotic factors plant mangrove‐to‐marsh zone, or ecotone. manipulated salinity (fresh, brackish salt water)...
Abstract Background Extensive drainage of peatlands in the southeastern United States coastal plain for purposes agriculture and timber harvesting has led to large releases soil carbon as dioxide (CO 2 ) due enhanced peat decomposition. Growth mechanisms that provide financial incentives reducing emissions from land use land-use change could increase funding hydrological restoration reduces CO these ecosystems. Measuring respiration physical drivers across a range site characteristics...
We examined how invasion of tropical riparian forests by an exotic N-fixing tree (Falcataria moluccana) affects organic-matter dynamics in a Hawaiian river comparing early stages leaf-litter breakdown between the F. moluccana and native Metrosideros polymorpha trees. decomposition because low retention rates (<20 d) that result from flashy nature Pacific Island streams. Leaf rates, fungal biomass, invertebrate abundances were 40, 120, 30% greater, respectively, for than M. leaves....