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Title: Engaging Students in Ethical Considerations of the Scientific Process Using a Simulated Funding Panel.
Creator: Demers, Nora, Nelson, Katherine, Gunnels, Charles W., Bovard, Brian, Cassani, Mary Kay, Douglass, James, Everham, Edwin, Hartley, Anne, Herman, John, Mujtaba, Mustafa, Muller,...
Show moreDemers, Nora, Nelson, Katherine, Gunnels, Charles W., Bovard, Brian, Cassani, Mary Kay, Douglass, James, Everham, Edwin, Hartley, Anne, Herman, John, Mujtaba, Mustafa, Muller, Joanne, Nicolas, Antoine, Southard, Larry, Thomas, Serge, Buzasi, Derek
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Abstract / Description: All undergraduates majoring in a physical or natural science in the College of Arts and Sciences at Florida Gulf Coast University (FGCU) are required to take an interdisciplinary-science methods course entitled Scientific Process. This course is designed to help professionalize students by introducing them to the history, practice, philosophy, and ethics associated with being a working scientist (Meers, Demers and Savarese 2003). Most students take the course early in their junior year as the...
Show moreAll undergraduates majoring in a physical or natural science in the College of Arts and Sciences at Florida Gulf Coast University (FGCU) are required to take an interdisciplinary-science methods course entitled Scientific Process. This course is designed to help professionalize students by introducing them to the history, practice, philosophy, and ethics associated with being a working scientist (Meers, Demers and Savarese 2003). Most students take the course early in their junior year as the first class in a sequence of research courses that culminates in conducting and presenting independent research during their senior year.
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Date Issued: 2015-10-01
Identifier: fgcu_ir_000397
Format: Citation

Title: The Effects of Reduced Tidal Flushing on Mangrove Structure and Function Across a Disturbance Gradient.
Creator: Everham, Edwin, Milbrandt, Eric C., Harris, Rachel J., Bovard, Brian D.
Abstract / Description: The effects of reduced tidal flushing on posthurricane mangrove recovery were measured across a gradient of hurricane disturbance (in order of decreasing wind intensity: Captiva, North Sanibel, Central Sanibel, and East Sanibel). Each region consisted of replicate study plots with either reduced tidal exchange (tidally restricted location) or an open tidal connection (tidally unrestricted location). Locations with reduced tidal exchange displayed significantly lower (two-way ANOVA, p≤0.0001)...
Show moreThe effects of reduced tidal flushing on posthurricane mangrove recovery were measured across a gradient of hurricane disturbance (in order of decreasing wind intensity: Captiva, North Sanibel, Central Sanibel, and East Sanibel). Each region consisted of replicate study plots with either reduced tidal exchange (tidally restricted location) or an open tidal connection (tidally unrestricted location). Locations with reduced tidal exchange displayed significantly lower (two-way ANOVA, p≤0.0001) tidal amplitude, decreased seedling densities, and decreased productivity (recruitment, growth, and litter fall) when compared to the tidally unrestricted locations. Results also indicated significant regional variations in measures of mangrove stand structure (seedlings and canopy) and productivity (recruitment, growth, and litter fall) up to 4-years post-hurricane disturbance. These findings suggest that the legacy effects from hurricane disturbance vary with degree of wind intensity, acting both independently and synergistically with the effects of tidal restriction to influence post-hurricane mangrove structure and function.
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Date Issued: 2010-05-14
Identifier: fgcu_ir_000932
Format: Citation

Title: Intense Southwest Florida hurricane landfalls over the past 1000 years.
Creator: Savarese, Michael, Collins, Jennifer, Squiccimara, Louis, Ercolani, Christian, Muller, Joann
Abstract / Description: Recent research has proposed that human-induced sea surface temperature (SST) warming has led to an increase in the intensity of hurricanes over the past 30 years. However, this notion has been challenged on the basis that the instrumental record is too short and unreliable to reveal long-term trends in hurricane activity. This study addresses this limitation by investigating hurricane-induced overwash deposits (paleotempestites) behind a barrier island in Naples, FL, USA. Paleotempestologic...
Show moreRecent research has proposed that human-induced sea surface temperature (SST) warming has led to an increase in the intensity of hurricanes over the past 30 years. However, this notion has been challenged on the basis that the instrumental record is too short and unreliable to reveal long-term trends in hurricane activity. This study addresses this limitation by investigating hurricane-induced overwash deposits (paleotempestites) behind a barrier island in Naples, FL, USA. Paleotempestologic proxies including grain size, percent calcium carbonate, and fossil shells species were used to distinguish overwash events in two sediment cores spanning the last one thousand years. Two prominent paleotempestites were observed in the top 20 cm of both cores: the first identified as Hurricane Donna in 1960 whereas an older paleotempestite (1900–1930) could represent one of three documented storms in the early 1900s. An active period of hurricane overwash from 1000 to 500 yrs. BP and an inactive period from 500 to 150 yrs. BP correlate with reconstructed SSTs from the Main Development Region (MDR) of the North Atlantic Ocean. We observe an increased number of paleotempestites when MDR SSTs are warmer, coinciding with the Medieval Warm Period, and very few paleotempestites when MDR SSTs are cooler, coinciding with the Little Ice Age. Results from this initial Southwest Florida study indicate that MDR SSTs have been a key long-term climate driver of intense Southwest Florida hurricane strikes.
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Date Issued: 2015-10-15
Identifier: fgcu_ir_000965
Format: Citation

Title: Herpetofaunal Community Change in Multiple Habitats after Fifteen Years in a Southwest Florida Preserve.
Creator: Croshaw, Dean, Everham, Edwin, Cassani, John R., Bozzo, Joseph, Brooks, Brenda, Ceilley, David W., Hanson, Deborah
Abstract / Description: Herpetofaunal declines have been documented globally, and southern Florida, USA, is an especially vulnerable region because of high impacts from hydrological perturbations and nonindigenous species. To assess the extent of recent change in herpetofauna community composition, we established a baseline inventory during 1995-97 at a managed preserve in a habitat rich area of southwest Florida, and repeated our sampling methods fifteen years later (2010-11). Nine drift fence arrays were placed in...
Show moreHerpetofaunal declines have been documented globally, and southern Florida, USA, is an especially vulnerable region because of high impacts from hydrological perturbations and nonindigenous species. To assess the extent of recent change in herpetofauna community composition, we established a baseline inventory during 1995-97 at a managed preserve in a habitat rich area of southwest Florida, and repeated our sampling methods fifteen years later (2010-11). Nine drift fence arrays were placed in four habitat types: mesic flatwood, mesic hammock, depression marsh, and wet prairie. Trapping occurred daily for one week during 7-8 sampling runs in each period (57 and 49 total sampling days, respectively). Species richness was maintained in mesic hammock habitats but varied in the others. Catch rates of several native species (Anaxyrus terrestris, Lithobates grylio, Anolis carolinensis, Nerodia fasciata) declined significantly. Other native species (Lithobates sphenocephalus, Siren lacertian, and Notophthalmus viridescens piaropicola) that were abundant in 1995-97 declined by greater than 50%. Catch rate of only two species (the nonindigenous Anolis sagrei and the native Diadophis punctatus) increased significantly. Hierarchical cluster analysis indicated similarity within habitat types but significant dissimilarity between sampling periods, confirming shifts in community composition. Analysis of individual species’ contributions to overall similarity across habitats shows a shift from dominance of native species in the 1990s to increased importance of nonindigenous species in 2010-11. Although natural population fluctuations may have influenced differences between the two sampling periods, our results suggest considerable recent change in the structure and composition of this southwest Florida herpetofaunal community. The causes are unknown, but hydrological shifts and ecological impacts of nonindigenous species may have contributed.
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Date Issued: 2015-05-27
Identifier: fgcu_ir_000384
Format: Document (PDF)

Title: Draft Genome Sequence of Nitrosospira sp. Strain APG3, a Psychrotolerant Ammonia-Oxidizing Bacterium Isolated from Sandy Lake Sediment.
Creator: Garcia, Juan, Urakawa, Hidetoshi, Le, Vang Q, Stein, Lisa Y, Klotz, Martin G, Nielsen, Jeppe L
Abstract / Description: Bacteria in the genus Nitrosospira play vital roles in the nitrogen cycle. Nitrosospira sp. strain APG3 is a psychrotolerant betaproteobacterial ammonia-oxidizing bacterium isolated from freshwater lake sediment. The draft genome revealed that it represents a new species of cluster 0 Nitrosospira, which is presently not represented by described species.
Date Issued: 2013-11-07
Identifier: 10.1128/genomeA.00930-13, fgcu_ir_000051, http://genomea.asm.org/cgi/doi/10.1128/genomeA.00930-13
Format: Citation

Title: Nitrosopumilus maritimus gen. nov., sp. nov., Nitrosopumilus cobalaminigenes sp. nov., Nitrosopumilus oxyclinae sp. nov., and Nitrosopumilus ureiphilus sp. nov., four marine ammonia-oxidizing archaea of the phylum Thaumarchaeota.
Creator: Qin, Wei, Heal, Katherine R., Ramdasi, Rasika, Kobelt, Julia N., Martens-Habbena, Willm, Bertagnolli, Anthony D., Amin, Shady A., Walker, Christopher B., Urakawa, Hidetoshi,...
Show moreQin, Wei, Heal, Katherine R., Ramdasi, Rasika, Kobelt, Julia N., Martens-Habbena, Willm, Bertagnolli, Anthony D., Amin, Shady A., Walker, Christopher B., Urakawa, Hidetoshi, Könneke, Martin, Devol, Allan H., Moffett, James W., Armbrust, E. Virginia, Jensen, Grant J., Ingalls, Anitra E., Stahl, David A.
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Abstract / Description: Four mesophilic, neutrophilic, and aerobic marine ammonia-oxidizing archaea, designated strains SCM1T, HCA1T, HCE1T and PS0T, were isolated from a tropical marine fish tank, dimly lit deep coastal waters, the lower euphotic zone of coastal waters, and near-surface sediment in the Puget Sound estuary, respectively. Cells are straight or slightly curved small rods, 0.15–0.26 µm in diameter and 0.50–1.59 µm in length. Motility was not observed, although strain PS0T possesses genes associated...
Show moreFour mesophilic, neutrophilic, and aerobic marine ammonia-oxidizing archaea, designated strains SCM1T, HCA1T, HCE1T and PS0T, were isolated from a tropical marine fish tank, dimly lit deep coastal waters, the lower euphotic zone of coastal waters, and near-surface sediment in the Puget Sound estuary, respectively. Cells are straight or slightly curved small rods, 0.15–0.26 µm in diameter and 0.50–1.59 µm in length. Motility was not observed, although strain PS0T possesses genes associated with archaeal flagella and chemotaxis, suggesting it may be motile under some conditions. Cell membranes consist of glycerol dibiphytanyl glycerol tetraether (GDGT) lipids, with crenarchaeol as the major component. Strain SCM1T displays a single surface layer (S-layer) with p6 symmetry, distinct from the p3-S-layer reported for the soil ammonia-oxidizing archaeon Nitrososphaera viennensis EN76T. Respiratory quinones consist of fully saturated and monounsaturated menaquinones with 6 isoprenoid units in the side chain. Cells obtain energy from ammonia oxidation and use carbon dioxide as carbon source; addition of an α-keto acid (α-ketoglutaric acid) was necessary to sustain growth of strains HCA1T, HCE1T, and PS0T. Strain PS0T uses urea as a source of ammonia for energy production and growth. All strains synthesize vitamin B1 (thiamine), B2 (riboflavin), B6 (pyridoxine), and B12 (cobalamin). Optimal growth occurs between 25 and 32 °C, between pH 6.8 and 7.3, and between 25 and 37 ‰ salinity. All strains have a low mol% G+C content of 33.0–34.2. Strains are related by 98 % or greater 16S rRNA gene sequence identity, sharing ~85 % 16S rRNA gene sequence identity with Nitrososphaera viennensis EN76T. All four isolates are well separated by phenotypic and genotypic characteristics and are here assigned to distinct species within the genus Nitrosopumilus gen. nov. Isolates SCM1T (=ATCC TSD-97T =NCIMB 15022T), HCA1T (=ATCC TSD-96T), HCE1T (=ATCC TSD-98T), and PS0T (=ATCC TSD-99T) are type strains of the species Nitrosopumilus maritimus sp. nov., Nitrosopumilus cobalaminigenes sp. nov., Nitrosopumilus oxyclinae sp. nov., and Nitrosopumilus ureiphilus sp. nov., respectively. In addition, we propose the family Nitrosopumilaceae fam. nov. and the order Nitrosopumilales ord. nov. within the class Nitrososphaeria.
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Date Issued: 2017-12-01
Identifier: 10.1099/ijsem.0.002416, fgcu_ir_001004, http://www.microbiologyresearch.org/content/journal/ijsem/10.1099/ijsem.0.002416
Format: Citation

Title: Stress response of a marine ammonia-oxidizing archaeon informs physiological status of environmental populations.
Creator: Qin, Wei, Amin, Shady A, Lundeen, Rachel A, Heal, Katherine R, Martens-Habbena, Willm, Turkarslan, Serdar, Urakawa, Hidetoshi, Costa, Kyle C, Hendrickson, Erik L, Wang, Tony,...
Show moreQin, Wei, Amin, Shady A, Lundeen, Rachel A, Heal, Katherine R, Martens-Habbena, Willm, Turkarslan, Serdar, Urakawa, Hidetoshi, Costa, Kyle C, Hendrickson, Erik L, Wang, Tony, Beck, David AC, Tiquia-Arashiro, Sonia M, Taub, Fred, Holmes, Andrew D, Vajrala, Neeraja, Berube, Paul M, Lowe, Todd M, Moffett, James W, Devol, Allan H, Baliga, Nitin S, Arp, Daniel J, Sayavedra-Soto, Luis A, Hackett, Murray, Armbrust, E Virginia, Ingalls, Anitra E, Stahl, David A
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Abstract / Description: High representation by ammonia-oxidizing archaea (AOA) in marine systems is consistent with their high affinity for ammonia, efficient carbon fixation, and copper (Cu)-centric respiratory system. However, little is known about their response to nutrient stress. We therefore used global transcriptional and proteomic analyses to characterize the response of a model AOA, Nitrosopumilus maritimus SCM1, to ammonia starvation, Cu limitation and Cu excess. Most predicted protein-coding genes were...
Show moreHigh representation by ammonia-oxidizing archaea (AOA) in marine systems is consistent with their high affinity for ammonia, efficient carbon fixation, and copper (Cu)-centric respiratory system. However, little is known about their response to nutrient stress. We therefore used global transcriptional and proteomic analyses to characterize the response of a model AOA, Nitrosopumilus maritimus SCM1, to ammonia starvation, Cu limitation and Cu excess. Most predicted protein-coding genes were transcribed in exponentially growing cells, and of ~74% detected in the proteome, ~6% were modified by N-terminal acetylation. The general response to ammonia starvation and Cu stress was downregulation of genes for energy generation and biosynthesis. Cells rapidly depleted transcripts for the A and B subunits of ammonia monooxygenase (AMO) in response to ammonia starvation, yet retained relatively high levels of transcripts for the C subunit. Thus, similar to ammonia-oxidizing bacteria, selective retention of amoC transcripts during starvation appears important for subsequent recovery, and also suggests that AMO subunit transcript ratios could be used to assess the physiological status of marine populations. Unexpectedly, cobalamin biosynthesis was upregulated in response to both ammonia starvation and Cu stress, indicating the importance of this cofactor in retaining functional integrity during times of stress.
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Date Issued: 2018-02-20
Identifier: 10.1038/ismej.2017.186, fgcu_ir_000036, http://www.nature.com/doifinder/10.1038/ismej.2017.186
Format: Citation

Title: Differences in the photoacclimation and photoprotection exhibited by two species of the ciguatera causing dinoflagellate genus, Gambierdiscus.
Creator: Leynse, Alexander K., Parsons, Michael L., Thomas, Serge
Abstract / Description: In culture, Gambierdiscus spp. have been shown to prefer irradiances that are relatively low (≤250 μmol photons m−2 s−1) versus those to which they are frequently exposed to in their natural environment (>500 μmol photons m−2 s−1). Although several behavioral strategies for coping with such irradiances have been suggested, it is unclear as to how these dinoflagellates do so on a physiological level. More specifically, how do long term exposures (30 days) affect cell size and cellular...
Show moreIn culture, Gambierdiscus spp. have been shown to prefer irradiances that are relatively low (≤250 μmol photons m−2 s−1) versus those to which they are frequently exposed to in their natural environment (>500 μmol photons m−2 s−1). Although several behavioral strategies for coping with such irradiances have been suggested, it is unclear as to how these dinoflagellates do so on a physiological level. More specifically, how do long term exposures (30 days) affect cell size and cellular chlorophyll content, and what is the photosynthetic response to short term, high irradiance exposures (up to 1464 μmol photons m−2 s−1)? The results of this study reveal that cell size and chlorophyll content exhibited by G. carolinianus increased with acclimation to increasing photon flux density. Additionally, both G. carolinianus and G. silvae exhibited reduced photosynthetic efficiency when acclimated to increased photon flux density. Photosynthetic yield exhibited by G. silvae was greater than that for G. carolinianus across all acclimation irradiances. Although such differences were evident, both G. carolinianus and G. silvae appear to have adequate biochemical mechanisms to withstand exposure to irradiances exceeding 250 μmol photons m−2 s−1 for at least short periods of time following acclimation to irradiances of up to 150 μmol photons m−2 s−1.
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Date Issued: 2017-11-13
Identifier: 10.1016/j.hal.2017.10.008, fgcu_ir_001002, https://linkinghub.elsevier.com/retrieve/pii/S1568988316301044
Format: Citation

Title: Carbon Sequestration and Sedimentation in Mangrove Swamps Influenced by Hydrogeomorphic Conditions and Urbanization in Southwest Florida.
Creator: Marchio, Daniel, Savarese, Michael, Bovard, Brian, Mitsch, William
Abstract / Description: This study compares carbon sequestration rates along two independent tidal mangrove creeks near Naples Bay in Southwest Florida, USA. One tidal creek is hydrologically disturbed due to upstream land use changes; the other is an undisturbed reference creek. Soil cores were collected in basin, fringe, and riverine hydrogeomorphic settings along each of the two tidal creeks and analyzed for bulk density, total organic carbon profiles, and sediment accretion. Radionuclides 137Cs and 210Pb were...
Show moreThis study compares carbon sequestration rates along two independent tidal mangrove creeks near Naples Bay in Southwest Florida, USA. One tidal creek is hydrologically disturbed due to upstream land use changes; the other is an undisturbed reference creek. Soil cores were collected in basin, fringe, and riverine hydrogeomorphic settings along each of the two tidal creeks and analyzed for bulk density, total organic carbon profiles, and sediment accretion. Radionuclides 137Cs and 210Pb were used to estimate recent sediment accretion and carbon sequestration rates. Carbon sequestration rates (mean ± standard error) for seven sites in the two tidal creeks on the Naples Bay (98 ± 12 g-C m−2·year−1 (n = 18)) are lower than published global means for mangrove wetlands, but consistent with other estimates from the same region. Mean carbon sequestration rates in the reference riverine setting were highest (162 ± 5 g-C m−2·year−1), followed by rates in the reference fringe and disturbed riverine settings (127 ± 6 and 125 ± 5 g-C m−2·year−1, respectively). The disturbed fringe sequestered 73 ± 10 g-C m−2·year−1, while rates within the basin settings were 50 ± 4 g-C m−2·year−1 and 47 ± 4 g-C m−2·year−1 for the reference and disturbed creeks, respectively. These data support our hypothesis that mangroves along a hydrologically disturbed tidal creek sequestered less carbon than did mangroves along an adjacent undisturbed reference creek.
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Date Issued: 2016-05-30
Identifier: 10.3390/f7060116, fgcu_ir_000086, http://www.mdpi.com/1999-4907/7/6/116
Format: Citation

Title: Nitrogen inputs and losses in response to chronic CO₂ exposure in a subtropical oak woodland.
Creator: Hungate, B. A., Duval, B. D., Dijkstra, P., Johnson, D. W., Ketterer, M. E., Stiling, P., Cheng, W., Millman, J., Hartley, Anne, Stover, D. B.
Abstract / Description: Rising atmospheric CO2 concentrations may alter the nitrogen (N) content of ecosystems by changing N inputs and N losses, but responses vary in field experiments, possibly because multiple mechanisms are at play.We measured N fixation and N losses in a subtropical oak woodland exposed to 11 years of elevated atmospheric CO2 concentrations. We also explored the role of herbivory, carbon limitation, and competition for light or nutrients in shaping the response of N fixation to elevated CO2....
Show moreRising atmospheric CO2 concentrations may alter the nitrogen (N) content of ecosystems by changing N inputs and N losses, but responses vary in field experiments, possibly because multiple mechanisms are at play.We measured N fixation and N losses in a subtropical oak woodland exposed to 11 years of elevated atmospheric CO2 concentrations. We also explored the role of herbivory, carbon limitation, and competition for light or nutrients in shaping the response of N fixation to elevated CO2. Elevated CO2 did not significantly alter gaseous N losses, but lower recovery and deeper distribution in the soil of a long-term 15N tracer indicated that elevated CO2 increased leaching losses. Elevated CO2 had no effect on nonsymbiotic N fixation, and had a transient effect on symbiotic N fixation by the dominant legume. Elevated CO2 tended to reduce soil and plant concentrations of iron, molybdenum, phosphorus, and vanadium, nutrients essential for N fixation. Competition for nutrients and herbivory likely contributed to the declining response of N fixation to elevated CO2. These results indicate that positive responses of N fixation to elevated CO2 may be transient and that chronic exposure to elevated CO2 can increase N leaching. Models that assume increased fixation or reduced N losses with elevated CO2 may overestimate future N accumulation in the biosphere.
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Date Issued: 2014-06-23
Identifier: 10.5194/bg-11-3323-2014, fgcu_ir_000072, http://www.biogeosciences.net/11/3323/2014/
Format: Citation

Title: A Rising Tide.
Creator: Nation, Molly, Feldman, Allan, Wang, Ping
Abstract / Description: The article discusses the need for students to have a clear understanding of climate change and how it affects the Earth. Topics covered include the increasing concentration of atmospheric greenhouse gases, placed-based education, and the sea-level increase as a significant problem for people living near the coasts..
Date Issued: 2015-09-01
Identifier: fgcu_ir_000987
Format: Citation

Title: Codling moth control in walnuts.
Creator: Evers, Chad, Van Steenwyk, Robert A., Kiss, Attilla B.
Abstract / Description: This trial was designed to evaluate the efficacy of new reduced risk insecticides as possible replacements for the grower standard organophosphate insecticides. The trial was conducted on mature ‘Waterloo’ walnut trees in a commercial orchard near Fairfield, CA. Seventeen individual tree treatments were replicated four times in a RCB design. Treatments were applied with a hand-held orchard sprayer operating at 250 psi and delivering a finished spray volume of 250 gpa (3.33 gal/tree)....
Show moreThis trial was designed to evaluate the efficacy of new reduced risk insecticides as possible replacements for the grower standard organophosphate insecticides. The trial was conducted on mature ‘Waterloo’ walnut trees in a commercial orchard near Fairfield, CA. Seventeen individual tree treatments were replicated four times in a RCB design. Treatments were applied with a hand-held orchard sprayer operating at 250 psi and delivering a finished spray volume of 250 gpa (3.33 gal/tree). Application timings were based on DD. DD were calculated using a 1 Apr biofix for moths from the overwintering generation and a 11 Jun biofix for moths from the first generation using a single sine horizontal cutoff model with a lower threshold of 50°F and an upper threshold of 88°F. Maximum and minimum air temperatures were obtained from the Tracy A CIMIS #167 weather station at San Joaquin County, CA. Treatments were applied on 5 May 2008 (333 DD from the 1st bioflix), 26 Jun (365 DD from 2nd biofix) and 7 Jul (612 DD from 2nd biofix). When two applications were applied, the 7 Jul application was not applied. Control of CM was evaluated at harvest on 1 Oct by inspecting 125 nuts per tree (500 nuts per treatment) for CM and NOW infestation. Although treatments were not targeted for NOW, damage from NOW will often increase due to CM infestation since NOW larvae will infest nuts previously infested by CM. Control of motile TSSM and WPM were evaluated by leaf-brushing 10 terminal leaflets per replicate collected from each tree weekly from 3 Jul to 20 Aug. The plates with the contents from the brushed leaves were counted under magnification (20X) in the laboratory. Data was analyzed using ANOVA and means were separated using Fisher’s protected LSD, (P ≤ 0.05).
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Date Issued: 2008-01-01
Identifier: fgcu_ir_000940
Format: Document (PDF)

Title: Codling moth control in apples.
Creator: Evers, Chad, Van Steenwyk, Robert A., Coates, William W.
Abstract / Description: This trial was designed to evaluate reduced-risk insecticides as possible replacements for the grower standard insecticides. This trial was conducted on 'Granny Smith' apple trees in a commercial orchard near Hollister, CA. Fifteen treatments were replicated four times in a RCB design. Each replicate was a group of three trees with one buffer tree between each replicate. The trees were about 12 ft tall. Treatments were applied with a handgun orchard sprayer operating at 200 psi and delivering...
Show moreThis trial was designed to evaluate reduced-risk insecticides as possible replacements for the grower standard insecticides. This trial was conducted on 'Granny Smith' apple trees in a commercial orchard near Hollister, CA. Fifteen treatments were replicated four times in a RCB design. Each replicate was a group of three trees with one buffer tree between each replicate. The trees were about 12 ft tall. Treatments were applied with a handgun orchard sprayer operating at 200 psi and delivering a finished spray volume of 150 gpa (5.0 gal per replicate). Application timings were based on degree-days (DD). DD were calculated with a biofix of 22 Mar for the first generation, a biofix of 19 Jun for the second generation, and a biofix of 13 Aug for the third generation using a single sine horizontal cutoff model with a lower threshold of 50°F and an upper threshold of 88°F. Maximum and minimum air temperatures were obtained from the Ausaymas Touchtone #56 weather station in San Benito County, CA. Control of CM was evaluated at the end of the first generation on 19 Jun by inspecting 250 fruit per replicate. CM infestation damage was evaluated on 17 Sep at commercial harvest by inspecting 250 fruit per replicate. Control of motile TSSM and WPM was evaluated by brushing and counting under magnification 20 leaves per replicated on 4, 11 and 18 Aug. Data were analyzed using ANOVA and means were separated using Fisher's protected LSD, (P ≤ 0.05).
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Date Issued: 2009-01-01
Identifier: fgcu_ir_000939
Format: Document (PDF)

Title: Influence of a Large-scale Removal of an Invasive Plant (Melaleuca quinquenervia) on Home-range Size and Habitat Selection by Female Florida Panthers (Puma concolor coryi) within Big Cypress National Preserve, Florida.
Creator: Everham, Edwin, Julian II, Paul, Main, Martin B.
Abstract / Description: The control of invasive exotic plants is often deemed important for managing native wildlife, but surprisingly little research exists that evaluates benefits to wildlife, including species of conservation concern. Melaleuca quinquenervia (Melaleuca) is an invasive, non-native, broad-leaved tree that aggressively displaces native plant communities in south Florida. We used land-cover maps to document changes in plant communities and radio-telemetry data to compare habitat selection and mean...
Show moreThe control of invasive exotic plants is often deemed important for managing native wildlife, but surprisingly little research exists that evaluates benefits to wildlife, including species of conservation concern. Melaleuca quinquenervia (Melaleuca) is an invasive, non-native, broad-leaved tree that aggressively displaces native plant communities in south Florida. We used land-cover maps to document changes in plant communities and radio-telemetry data to compare habitat selection and mean home-range size of the endangered Puma concolor coryi (Florida Panther) within Big Cypress National Preserve (BCNP) during a Melaleuca removal project's removal phase (1991-1997) and the ensuing maintenance and habitat recovery phase (1998-2006). During the removal phase, Panthers incorporated areas infested by Melaleuca as components of their home range. Following >99.9% removal of Melaleuca, we documented pronounced increases in total cover of native upland forest (227%), wetland forest (211%), and prairie (54%) communities. During the habitat recovery phase, Panther habitat selection in the study area included significantly more upland forest within home-range core areas, and mean home-range size contracted by 16%. However, similar reductions in mean home-range size were not observed during the same time period for the regional population of radio-collared Panthers occupying contiguous conservation lands in south Florida. Although our findings are correlational and do not demonstrate cause and effect, the increase in native plant community cover, the increased use of native plant communities by Panthers, and the reduction in mean home-range size following the removal of Melaleuca are consistent with what would be expected if improvements in habitat quality reduced Panther home-range size requirements. Restoration of native plant communities and particularly native forest types, therefore, may have improved habitat quality for the Florida Panther and resulted in smaller home-range sizes and a potential increase in carrying capacity within BCNP.
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Date Issued: 2012-01-01
Identifier: fgcu_ir_000931
Format: Citation

Title: Fish community structure of streams and canals at Babcock Ranch.
Creator: Everham, Edwin, Ceilley, David W., Brady-Herrero, Laura, Niemec, Kendra, Ross, Kory M., Ferlita, John A.
Abstract / Description: Fish communities were surveyed three times each year at 6 lotie habitats (small streams and manmade drainage ditches and canals) at Babcock Ranch, Charlotte and Lee Counties, Florida. Sampling methods were adopted from the baseline assessment of the Picayune Strand Restoration Project. Breder traps were deployed for one hour at each site for each sampling event. Active fish sampling with D-frame dip nets was also conducted for one hour at each location while traps were set. Data from passive...
Show moreFish communities were surveyed three times each year at 6 lotie habitats (small streams and manmade drainage ditches and canals) at Babcock Ranch, Charlotte and Lee Counties, Florida. Sampling methods were adopted from the baseline assessment of the Picayune Strand Restoration Project. Breder traps were deployed for one hour at each site for each sampling event. Active fish sampling with D-frame dip nets was also conducted for one hour at each location while traps were set. Data from passive and active sampling methods were combined for statistical analyses. A total of 26 fish species, representing 14 families were collected, including seven non-native fish species from four families. The most abundant fishes were native Gambusia holbrooki and non-native Hemichromis letourneuxi, respectively. Fish assemblages in canals were significantly different than in natural streams. Native sunfishes of the genus Lepomis were more abundant in streams than canals. Canals served as thermal réfugia for non-native cichlids during severe cold weather events in 2009 and 2010. The removal of anthropogenic drainage canals and ditches, that serve as thermal rej'ugia and pathways for dispersal for H. letourneuxi should benefit native fish species
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Date Issued: 2013-04-01
Identifier: fgcu_ir_000930
Format: Citation

Title: Surface and groundwater dynamics of a cypress slough in an urbanizing watershed.
Creator: Everham, Edwin, Key, Jeffrey G., Ceilley, David W., Thomas, Brenda L., Leisure III, Robert
Abstract / Description: Six Mile Cypress Slough Preserve is an approximately 1100 ha cypress swamp, encircled by residential and commercial development and crossed by four highways. Road construction, land development, and water management have significantly reduced the historic watershed from over 14,500 ha to approximately 8500 ha. This reduction in watershed area, along with suppression of fire, proliferation of invasive exotic species, and past logging appears to have had a profound ecological impact on the...
Show moreSix Mile Cypress Slough Preserve is an approximately 1100 ha cypress swamp, encircled by residential and commercial development and crossed by four highways. Road construction, land development, and water management have significantly reduced the historic watershed from over 14,500 ha to approximately 8500 ha. This reduction in watershed area, along with suppression of fire, proliferation of invasive exotic species, and past logging appears to have had a profound ecological impact on the swamp, resulting in suboptimal water depths and hydroperiods for the sustainable maintenance of the cypress forest. In 2006, Kevin Erwin Consulting Ecologist and Florida Gulf Coast University established a long-term monitoring program of hydrology and vegetation in the swamp. The objectives of the monitoring are to examine the dynamics of surface- and -ground water, and to examine the relationships between hydrology and vegetation dynamics. Preliminary analysis of the first two years of hydrologie monitoring illustrates the annual variability of hydroperiods, the fine spatial variance in rainfall inputs, and the impact of human activity on surface and groundwater levels in adjacent areas of the swamp. Future study includes examining the impact of large rainfall events, and correlating hydrology to vegetation to determine the likelihood of maintaining a cypress-dominated
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Date Issued: 2009-10-01
Identifier: fgcu_ir_000934
Format: Citation

Title: Codling moth control in apples.
Creator: Evers, Chad, Van Steenwyk, Robert A., Kiss, Attilla B., Coates, William W.
Abstract / Description: This trial was designed to evaluate reduced risk insecticides as possible replacements for the grower standard insecticides. This trial was conducted on ‘Granny Smith’ apple trees in a commercial orchard near Hollister, CA. Nineteen treatments were replicated four times in a RCB design. Each replicate was a group of two to four trees. The trees were about 12 ft tall. Treatments were applied with a handgun orchard sprayer operating at 200 psi and delivering a finished spray volume of 150 gpa ...
Show moreThis trial was designed to evaluate reduced risk insecticides as possible replacements for the grower standard insecticides. This trial was conducted on ‘Granny Smith’ apple trees in a commercial orchard near Hollister, CA. Nineteen treatments were replicated four times in a RCB design. Each replicate was a group of two to four trees. The trees were about 12 ft tall. Treatments were applied with a handgun orchard sprayer operating at 200 psi and delivering a finished spray volume of 150 gpa (5 gal/replicate). Application timings were based on DD. DD were calculated with a biofix of 1 Apr for the first generation of CM and a biofix of 26 Jun for the second generation using a single sine horizontal cutoff model with a lower threshold of 50°F and an upper threshold of 88°F. Maximum and minimum air temperatures were obtained from the HOLLISTR. A (CIMIS #126) weather station in San Benito, CA. Flight activity of male CM was monitored weekly from 18 Mar through 24 Aug with a Suterra 1X Patch and a Trécé DA Combo lure in Trécé 1CP traps placed high in the canopy of two trees and was used to determine biofix. Control of CM was evaluated at the end of the 1st generation on 24 Jun by inspecting 125 fruit per replicate on the tree. CM infestation damage was evaluated on 25 Aug at commercial harvest by removing 250 fruit per replicate and inspecting them in the laboratory. CM stings and strikes as well as total infestation were recorded for the harvest evaluation while only total infestation was determined for the first generation evaluation. Data were analyzed using ANOVA and means were separated using Fisher’s protected LSD (P ≤ 0.05).
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Date Issued: 2010-01-01
Identifier: fgcu_ir_000938
Format: Citation

Title: Codling moth control in walnuts.
Creator: Evers, Chad, Van Steenwyk, Robert A., Kiss, Attilla B.
Abstract / Description: This trial was designed to evaluate the efficacy of new reduced risk insecticides for CM control as possible replacements for the grower standard organophosphate insecticides. The trial was conducted on mature 'Payne' walnut trees in a commercial orchard in Tracy, CA. Thirty treatments were replicated four times in a RCB design. Each replicate consisted of an individual tree. Treatments were applied with a hand-held orchard sprayer operating at 300 psi and delivering a finished spray volume...
Show moreThis trial was designed to evaluate the efficacy of new reduced risk insecticides for CM control as possible replacements for the grower standard organophosphate insecticides. The trial was conducted on mature 'Payne' walnut trees in a commercial orchard in Tracy, CA. Thirty treatments were replicated four times in a RCB design. Each replicate consisted of an individual tree. Treatments were applied with a hand-held orchard sprayer operating at 300 psi and delivering a finished spray volume of 400 gpa (5.7 gal/tree). Application timings were based on DD. DD were calculated with a 27 Mar biofix for the first CM generation and a 7 Jun biofix for the second CM generation using a single sine horizontal cutoff model with a lower threshold of 50°F and an upper threshold of 88°F. Maximum and minimum air temperatures were obtained from the Tracy A CIMIS #167 weather station at San Joaquin County, CA. Flight activity of male CM was monitored weekly from 26 Mar through 8 Sep with two Suterra 1X and two Trece Combo lures in Trece 1CP traps placed high in the canopy of four trees and was used to calculate biofix. Treatments were applied on 21 Apr (250 from 1st biofix), 28 Apr (313 from 1st biofix), 14 May (564 from 1st biofix), 19 May (687 from 1st biofix), 16 Jun (146 DD from 2nd biofix), 23 Jun (292 DD from 2nd biofix), 7 Jul (609 DD from 2nd biofix) and 8 Jul (630 DD from 2nd biofix). Control of the first CM generation (overwintering flight) was evaluated by inspecting all dropped nuts weekly from 29 May to 18 Jun for CM infestation. Control of the second and third generations (summer flights) was evaluated at harvest on 13 Sep by inspecting 100 nuts per tree (400 nuts per treatment) for CM and NOW infestation. Although treatments were not targeted for NOW, damage from NOW will often increase due to CM infestation since NOW larvae will infest nuts previously infested by CM. Data was analyzed using ANOVA and means were separated using Fisher's protected LSD, (P ≤ 0.05).
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Date Issued: 2010-01-01
Identifier: fgcu_ir_000937
Format: Citation

Title: Codling moth control in pears.
Creator: Evers, Chad, Van Steenwyk, Robert A., Kiss, Attilla B.
Abstract / Description: This trial was designed to evaluate the efficacy of new reduced-risk insecticides as possible replacements for the grower standard insecticides. The trial was conducted on mature ‘Bartlett’ pear trees in a commercial orchard near Fairfield, CA. Thirteen treatments were replicated four times in a RCB design. Each replicate consisted of an individual tree. Treatments were applied with a handgun orchard sprayer operating at 250 psi and delivering a finished spray volume of 200 gpa (2.87 gal/tree...
Show moreThis trial was designed to evaluate the efficacy of new reduced-risk insecticides as possible replacements for the grower standard insecticides. The trial was conducted on mature ‘Bartlett’ pear trees in a commercial orchard near Fairfield, CA. Thirteen treatments were replicated four times in a RCB design. Each replicate consisted of an individual tree. Treatments were applied with a handgun orchard sprayer operating at 250 psi and delivering a finished spray volume of 200 gpa (2.87 gal/tree). Application timings were based on degree-days (DD). DD were calculated with a 24 Mar biofix for moths from the overwintering generation and a 12 Jun biofix for moths from the first generation using a single sine horizontal cutoff model with a lower threshold of 50°F and an upper threshold of 88°F. Maximum and minimum air temperatures were obtained from the Suisun Valley CIMIS #123 weather station at Solano County, CA. Treatments were applied on 25 Apr (236 DD from the 1st biofix), 23 May (651 DD from the 1st biofix), 24 Jun (295 DD from the 2nd biofix) and 10 Jul (634 DD from the 2nd biofix). Control of the first generation CM (overwintering flight) was evaluated on 10 Jun by inspecting 100 fruit per replicate for CM infestation. Control of the second generation (first generation flight) was evaluated at commercial harvest on 5 Aug for CM infestation and damage by inspecting 250 fruit per replicate. Control of motile TSSM and PP nymphs was evaluated weekly from 2 Jun through 28 Jul by sampling 10 exterior and 10 interior leaves per replicate. The leaves were brushed and the arthropods removed from the leaves were counted under magnification (20×) in the laboratory. Data were analyzed using ANOVA and means were separated using Fisher’s protected LSD, (P ≤ 0.05).
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Date Issued: 2009-01-01
Identifier: fgcu_ir_000936
Format: Citation

Title: Riparian vegetation along tributaries to Estero Bay, Florida.
Creator: Everham, Edwin, Ceilley, David W., Thomas, Brenda L., Hamilton, Daniel
Abstract / Description: We examined the riparian vegetation along the five main tributaries to Estero Bay, Lee County. Florida. Riparian vegetation serves as a non-motile integrator of salinity conditions over time, and may prove useful for detecting shifting salinity gradients associated with altered freshwater flow. An objective of this project was to refine our understanding of the freshwater/estuarine interface in the Estero Bay tributaries, using riparian vegetation as ecosystem indicators. We directly sampled...
Show moreWe examined the riparian vegetation along the five main tributaries to Estero Bay, Lee County. Florida. Riparian vegetation serves as a non-motile integrator of salinity conditions over time, and may prove useful for detecting shifting salinity gradients associated with altered freshwater flow. An objective of this project was to refine our understanding of the freshwater/estuarine interface in the Estero Bay tributaries, using riparian vegetation as ecosystem indicators. We directly sampled 0.9 ha and documented 126 plant species or genera. Variation in riparian vegetation communities among tributaries and position along tributaries seemed to be related to degree and period of land use change. We examined changes in riparian vegetation through analysis of aerial photography from 1966, 1981 and 2002. Historic patterns of shifts in riparian vegetation communities of Estero Bay tributaries are dominated by a loss of upland vegetation and an increase in human modified landscapes. A suite of freshwater and saltwater indicator species proved useful in distinguishing among tributaries, and particularly between positions along the tributaries. These indicator groups may be utilized for: documenting the ecological effects of alterations in freshwater flow: establishing restoration performance measures; and establishing Minimum Flows and Levels for tidally influenced streams of S W Florida.
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Date Issued: 2009-10-01
Identifier: fgcu_ir_000933
Format: Citation

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