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Full-Text Articles in Life Sciences

Assessing How Disruption Of Methanogenic Communities And Their Syntrophic Relationships In Tidal Freshwater Marshes Via Saltwater Intrusion May Affect Ch4 Emissions, David J. Berrier, Scott C. Neubauer, Rima B. Franklin Jan 2016

Assessing How Disruption Of Methanogenic Communities And Their Syntrophic Relationships In Tidal Freshwater Marshes Via Saltwater Intrusion May Affect Ch4 Emissions, David J. Berrier, Scott C. Neubauer, Rima B. Franklin

Rice Rivers Center Research Symposium

Tidal freshwater wetlands (TFW), which lie at the interface of saltwater and freshwater ecosystems, are predicted to experience moderate salinity increases due to sea level rise. Increases in salinity generally suppress CH4 production, but it is uncertain to what extent elevated salinity will affect CH4 cycling in TFW. It is also unknown whether CH4 production will resume when freshwater conditions return. The ability to produce CH4 is limited to a monophyletic group of the Euryarchaeota phylum called methanogens (MG), who are limited to a small number of substrates (e.g., acetate, H2, and formate) produced from the breakdown of fermentation products. …


Wood Frog And Spotted Salamander Abundance Across Pool Types And Wetland Networks At Fort A.P. Hill, Va, Logan Mcdonald, Will Fields, Katelyn Horn, James R. Vonesh, Kristine Grayson Jan 2016

Wood Frog And Spotted Salamander Abundance Across Pool Types And Wetland Networks At Fort A.P. Hill, Va, Logan Mcdonald, Will Fields, Katelyn Horn, James R. Vonesh, Kristine Grayson

Rice Rivers Center Research Symposium

Effective management of pond breeding amphibians requires identifying suitable breeding habitat and its use by different species. Suitable breeding habitat is largely characterized by pool type, physical habitat, and position within the landscape. Parameters such as vegetative cover, hydrology, and water chemistry are known to influence amphibian occupancy of vernal pools. While seasonal vernal pools have been the focus of conservation efforts, pools that are an artifact of anthropogenic disturbance, such as road ruts, may be an important component of the landscape for amphibians. The role of wetland isolation within a landscape has been well studied, but less consideration has …


Tower-Based Greenhouse Gas Fluxes In A Restored Tidal Freshwater Wetland: A Shared Resource For Research And Teaching., Ellen J. Stuart-Haëntjens, Scott C. Neubauer, Christopher M. Gough Jan 2016

Tower-Based Greenhouse Gas Fluxes In A Restored Tidal Freshwater Wetland: A Shared Resource For Research And Teaching., Ellen J. Stuart-Haëntjens, Scott C. Neubauer, Christopher M. Gough

Rice Rivers Center Research Symposium

The goals of this study are: 1) to use an eddy-covariance system to continuously measure wetland-atmosphere CO2 and CH4 exchange in a restored forested wetland, 2) to quantity C sequestration in plant biomass and soils in restored (Kimages Creek watershed) and old-growth (Harris Creek watershed) forested wetlands, and 3) to establish a shared long-term, shared research and teaching platform centered on eddy-covariance tower measurements. Since the old-growth forest wetland has had longer to accumulate C, the current C stocks are likely much larger than those of the restored wetland; however, the rate of C accumulation (i.e., C sequestration or net …


Foraging And Song Rate Of Prothonotary Warblers In High And Low Density Breeding Sites, Denney Turner, Amanda Mcghee, Lesley Bulluck Jan 2016

Foraging And Song Rate Of Prothonotary Warblers In High And Low Density Breeding Sites, Denney Turner, Amanda Mcghee, Lesley Bulluck

Rice Rivers Center Research Symposium

Foraging observations can be used as an indicator of habitat quality and food availability. Previous studies with song rate have had conflicting results. Song rate increases with abundance (male-­‐male interac=ons) (Warren et. al 2013) and with high quality habitats (Stehelin and Lein 2013). Unmated males sing twice as often as mated males (Robins et. al 2009), expected in poor quality habitats. Few studies have assessed foraging and song rate behaviors in high and low density systems. Prothonotary Warblers (PROW) are excellent study species because they nest in boxes and we can manipulate density. The objective of this study was to …