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Full-Text Articles in Life Sciences
Ecosystem Metabolism In A Subtropical Seagrass-Dominated Lagoon, Susan Ziegler, Ronald Benner
Ecosystem Metabolism In A Subtropical Seagrass-Dominated Lagoon, Susan Ziegler, Ronald Benner
Faculty Publications
Measurements of ecosystem gross primary production (GPP) and respiration (R) were made for 2 to 3 consecutive days on 10 occasions from February 1996 through June 1997 in the seagrass-dominated Laguna Madre (Texas, USA). Ecosystem GPP and R were quantified using 3 independent measurements including the open-water technique using dissolved oxygen (DO) and dissolved inorganic carbon (DIC) and the summation of discrete measurements of the water column and benthos. Diel curves of DIC were often influenced by water movement while the impact of water movement on DO was not apparent. This was attributed to the longer turnover time of DIC …
Ecosystem Responses To Internal And Watershed Organic Matter Loading: Consequences For Hypoxia In The Eutrophying Neuse River Estuary, North Carolina, Usa, Hans W. Paerl, James L. Pinckney, John M. Fear, Benjamin L. Peierls
Ecosystem Responses To Internal And Watershed Organic Matter Loading: Consequences For Hypoxia In The Eutrophying Neuse River Estuary, North Carolina, Usa, Hans W. Paerl, James L. Pinckney, John M. Fear, Benjamin L. Peierls
Faculty Publications
The contrasting impacts of externally supplied (runoff) and internally generated (nutrient stimulated phytoplankton blooms) organic matter on oxygen (02) depletion were examined and evaluated in the eutrophic, salinity-stratified Neuse River Estuary, North Carolina, USA. This nitrogen (N)- limited estuary is experiencing increasing anthropogenic N loading from expanding urban, agricultural and industrial development in its watershed. Resultant algal blooms, which provided organic matter loads capable of causing extensive low 02 (hypoxic) and depleted 02 (anoxic) conditions, have induced widespread mortality of resident fin- and shellfish. Phytoplankton blooms followed periods of elevated N loading, except during extremely high …
The Effects Of Pool Size On The Microinvertebrate Populations Of Chaney Lake, An Ephemeral Wetland Located In Bowling Green, Kentucky, Shannon Gaines
The Effects Of Pool Size On The Microinvertebrate Populations Of Chaney Lake, An Ephemeral Wetland Located In Bowling Green, Kentucky, Shannon Gaines
Mahurin Honors College Capstone Experience/Thesis Projects
Studies concerning the microinvertebrate communities of differing pool sizes were conducted at Chaney Lake, an ephemeral, karst wetland located in Bowling Green, Kentucky. As the lake begins to dry in the early summer, smaller, isolated ponds begin to form. Several ponds of various sizes were marked for analysis. Microinvertebrate samples and physiochemical readings were taken at each of the sites and were counted in the lab. T-tests were performed on the samples to determine if the microinvertebrate densities differed between ponds that dried later in the season as opposed to those that dried earlier. Ostracoda densities of the late dry …