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Preferential Production And Transport Of Grass-Derived Pyrogenic Carbon In Ne-Australian Savanna Ecosystems, Gustavo Saiz, Iain Goodrick, Christopher Wurster, Paul N. Nelson, Jonathan G. Wynn, Michael Bird

School of Geosciences Faculty and Staff Publications

Understanding the main factors driving fire regimes in grasslands and savannas is critical to better manage their biodiversity and functions. Moreover, improving our knowledge on pyrogenic carbon (PyC) dynamics, including formation, transport and deposition, is fundamental to better understand a significant slow-cycling component of the global carbon cycle, particularly as these ecosystems account for a substantial proportion of the area globally burnt. However, a thorough assessment of past fire regimes in grass-dominated ecosystems is problematic due to challenges in interpreting the charcoal record of sediments. It is therefore critical to adopt appropriate sampling and analytical methods to allow the acquisition …

An Evaluation Of Plant Community Structure, Fish And Benthic Meio- And Macrofauna As Success Criteria For Reclaimed Wetlands, Thomas Crisman, William J. Streever, John H. Kiefer, David L. Evans

School of Geosciences Faculty and Staff Publications

As a result of legislative action in 1975 (Florida Administrative Code Section 16C-16, 16C-17), landscape reclamation is required on all lands mined for phosphate in the State of Florida. Between 1975 and 1991, for example, approximately 40,000 ha of land in Florida were strip mined for phosphate and thus subject to provisions of this legislation. In excess of 2,700 ha of mitigation wetlands have been constructed as part of the land reclamation effort, but the degree to which these systems mimic both the structural and functional properties of natural wetlands is poorly known.

There has been a great diversity in …