Person

Mark Hester

5 items:

Salt marsh phenology and sexual reproductive characteristics at reference and restored sites in Louisiana, USA (2016) This dataset provides information on plant sexual reproduction of a clonally-spreading perennial species, Spartina alterniflora. We investigated flowering phenology, potential seed and seedling production, and flower damage in reference and restored sites in southeastern Louisiana. Additional covariates of elevation and soil parameters were used to investigate underlying mechanisms of differences. Categories: Data; Tags: Botany, Ecology, Louisiana, Port Fourchon, USGS Science Data Catalog (SDC), All tags...
Stress gradients interact with disturbance to reveal alternative states in salt marsh: Multivariate resilience at the landscape scale Stress gradients influence many ecosystem processes and properties, including ecosystem recovery from and resistance to disturbance. While recent analytical approaches have advanced multivariate metrics of ecosystem resilience that allow quantification of conceptual resilience models and identification of thresholds of state change, these approaches are not often translated to landscape scales. Using natural and restored salt marshes in Louisiana, USA, we quantified plant community recovery and resistance metrics along flooding stress gradients. n‐dimensional hypervolumes of plant community biomass and structure were simulated using field data collected from disturbance‐recovery experiments. The relationships between... Categories: Publication; Types: Citation
Hurricane sedimentation in a subtropical salt marsh-mangrove community in the Mississippi River Delta Complex unaffected by vegetation type Hurricanes periodically deliver sediment to coastal wetlands, such as those in the Mississippi River Delta Complex (MRDC), slowing elevation loss and improving resilience to sea-level rise. However, the amount of hurricane sediment deposited and retained in a wetland may vary depending on the dominant vegetation. In the subtropical climate of the MRDC, the black mangrove (Avicennia germinans (L.) L.) has been expanding and replacing salt marsh (Spartina alterniflora Loisel). Because these vegetation types differ in aboveground structure, their influence on sedimentation may also differ. We conducted a survey for 160 km along the outer coast of Louisiana, USA from Oyster Bayou to the Mississippi River to determine... Categories: Data; Tags: Ecology, Gulf of Mexico, Louisiana, USGS Science Data Catalog (SDC), aquatic vegetation, All tags...
Beyond just sea level rise: incorporating climate into coastal wetland vulnerability assessments How will climate change affect coastal wetlands and their ability to support fish and wildlife habitat and other important ecosystem goods and services for current and future generations? Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Coastal wetland, Forests, Grasslands and Plains, Landscapes, Sea-Level Rise and Coasts, All tags...
Microspatial ecotone dynamics at a shifting range limit: plant–soil variation across salt marsh–mangrove interfaces Categories: Publication; Types: Citation; Tags: Carbon, Climate change, Coastal wetland, Expansion dynamics, Forests, All tags...

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