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Articles 1 - 8 of 8
Full-Text Articles in Life Sciences
Fine Root Vitality And Its Application In A Minirhizotron Study Of A Co2 Enrichment In A Florida Scrub Oak Ecosystem, Brandon Todd Herbert
Fine Root Vitality And Its Application In A Minirhizotron Study Of A Co2 Enrichment In A Florida Scrub Oak Ecosystem, Brandon Todd Herbert
Biological Sciences Theses & Dissertations
Minirhizotron images are assigned color codes to approximate the age of individual roots in situ. Triphenyl-tetrazolium chloride (TTC) has been used to measure the vitality of plant tissue by detecting dehydrogenase activity. TTC was used to assess the vitality of root tissue by color in a scrub oak ecosystem at Kennedy Space Center in central Florida. Roots were excavated, sorted into four color classes and stained with TTC. The product of the reduction of TTC by dehydrogenase enzyme, formazan, was extracted and its absorbance recorded using a spectrophotometer. A significant difference (p2 enrichment being conducted on a scrub oak …
3d Visualization Of Coral Reef Habitat, Brian K. Walker, Richard E. Dodge
3d Visualization Of Coral Reef Habitat, Brian K. Walker, Richard E. Dodge
Marine & Environmental Sciences Faculty Proceedings, Presentations, Speeches, Lectures
A bathymetric survey was recently conducted in Southeast Florida (Broward County) during April 2001 using the Laser Airborne Depth Sounder (LADS) system. This four-meter resolution survey encompassed from North Dade County, through the length of Broward County coastline, to south Palm Beach County (approximately 43 km) and from the shore eastward to depths of approximately 40 m (2.5-3.5 km offshore). This georeferenced data was sun shaded at various angles and azimuths and draped with a NOAA NAPP 1:24,000 georeferenced air photograph mosaic. The model was zoomed and tipped to the desired orientations and processed into three-dimensional perspectives. Two views, slightly …
Snail Kite Nest Success And Water Levels : A Reply To Beissinger And Snyder, Victoria J. Dreitz, Robert E. Bennetts, Brian Toland, Wiley M. Kitchens, Michael W. Collopy
Snail Kite Nest Success And Water Levels : A Reply To Beissinger And Snyder, Victoria J. Dreitz, Robert E. Bennetts, Brian Toland, Wiley M. Kitchens, Michael W. Collopy
Wildlife Biology Faculty Publications
Beissinger and Snyder present a commentary on our recent paper on spatial and temporal variability in nest success of Snail Kites (Rostrhamus sociabilis) in Florida (Dreitz et al. 2001). Beissinger and Snyder reanalyze a subset of data presented in our original paper to show that water levels have a significant influence on nest success. To make their argument, the authors conduct separate analyses for 5 of the original 11 wetlands; including only those having the most data. We agree with Beissinger and Snyder that water levels can affect nest success in some areas or years, as we stated …
Natal Dispersal Of The Crested Caracara In Florida, Nicole M. Nemeth, Joan L. Morrison
Natal Dispersal Of The Crested Caracara In Florida, Nicole M. Nemeth, Joan L. Morrison
Faculty Scholarship
No abstract provided.
Hydrobiid Snails (Mollusca: Gastropoda: Rissooidea) From St. Andrew Bay, Florida, Richard W. Heard, Robin M. Overstreet, John M. Foster
Hydrobiid Snails (Mollusca: Gastropoda: Rissooidea) From St. Andrew Bay, Florida, Richard W. Heard, Robin M. Overstreet, John M. Foster
Gulf and Caribbean Research
Heleobops sp. of Hershler and Thompson appears to be the only previously published record for the gastropod family Hydrobiidae Troschel in tidal waters of the St. Andrew Bay System, Florida. Six species occurred in bayous, marshes, and brackish ponds associated with the System during studies conducted between 1984 and 1999: Texadina barretti (Morrison), Texadina sphinctostoma Abbott and Ladd, Littoridinops monroensis (Frauenfeld), Littoridinops palustris Thompson, Onobops jacksoni (Bartsch), and Heleobops sp. A. The last is an apparently undescribed species closely related to Heleobops carrikeri Davis and McKee. Based in part on this study, Heleobops sp. A, which occurs in brackish habitats …
Spatial And Temporal Variability In Zooplankton Community Dynamics In Three Urbanized Bayous Of The Pensacola Bay System, Florida, Usa, Emile M. Lores, Michael A. Lewis, Ziad A. Malaeb
Spatial And Temporal Variability In Zooplankton Community Dynamics In Three Urbanized Bayous Of The Pensacola Bay System, Florida, Usa, Emile M. Lores, Michael A. Lewis, Ziad A. Malaeb
Gulf and Caribbean Research
Spatial and temporal patterns in zooplankton community composition and abundance in coastal areas of the Gulf of Mexico are not well understood. Spatial and temporal differences in zooplankton community composition and abundance from 10 stations located in four sites are presented (Pensacola Bay and Bayou Texar, Bayou Chico, and Bayou Grande, three adjacent mesohaline-tidal bayous affected by urban and industrial development). Statistically significant differences (P < 0.05) were found in log-biovolume among sites. The mean biovolume of zooplankton was highest in Pensacola Bay (0.38 ml m-3) followed by Bayou Grande (0.21 ml m-3), Bayou Chico (0.14 ml m-3), and Bayou Texar (0.06 ml m-3). Mean zooplankton abundances (organisms m-3) in Pensacola …
Acoustic Remote-Sensing Of Reef Benthos In Broward County, Florida (Usa), Ryan P. Moyer, Bernhard Riegl, Richard E. Dodge, Brian K. Walker, David S. Gilliam
Acoustic Remote-Sensing Of Reef Benthos In Broward County, Florida (Usa), Ryan P. Moyer, Bernhard Riegl, Richard E. Dodge, Brian K. Walker, David S. Gilliam
Marine & Environmental Sciences Faculty Proceedings, Presentations, Speeches, Lectures
Benthic assemblages of variable density cover three progressively deeper ridges that parallel the Broward County, Florida, coast. An acoustic bottom classification survey using QTCView5 with a 50 kHz transducer showed different acoustic classes on the shallow reef-ridge and the two deeper reef-lines, which both showed the same acoustic signature. Ground-truthing showed that the differences in acoustic signature corresponded to different benthic assemblages: nearshore hardgrounds had low live cover and were dominated by algae covering substrate, the two deeper reef-ridges had the same acoustic signature and similar benthic assemblages (dominated by sponges and gorgonians). The QTCView5 was also able to differentiate …
Post-Fire Recovery Of Acorn Production By Four Oak Species In Southern Ridge Sandhill Association In South-Central Florida, Warren Abrahamson, J.N. Layne
Post-Fire Recovery Of Acorn Production By Four Oak Species In Southern Ridge Sandhill Association In South-Central Florida, Warren Abrahamson, J.N. Layne
Warren G. Abrahamson, II
No abstract provided.