Digital Commons Network^™

Interdisciplinary Research And Environmental Law, Dave Owen, Caroline Noblet

Faculty Scholarship

No abstract provided.

Assessing Suicide Risk Scores As A Predictor Of Suicidal Behaviors In A Correctional Psychiatric Facility, Janice Rice

Antioch University Dissertations & Theses

This study evaluated suicide risk assessments in a correctional psychiatric setting. It considered whether clinicians’ judgment of suicide risk predicted future suicidal behaviors in seriously mentally ill prisoners. Data analysis did not show that higher suicide risk scores predicted more suicidal behaviors, nor did it show that suicide risk scores differentiated multiple attempters, or those who went on to attempt suicide or self-harm two or more times in the three years following the assessment. Study data did, however show that suicide risk scores significantly differentiated those who went on to attempt suicide or self-harm at least once in the three …

Spatial Analysis Of Nest Productivity And Predation In Prothonotary Warblers, Miranda Foster, Lesley P. Bulluck

UROP Posters

Generally, statistics are based off the assumption that observations are independent from each other in space. In larger ecological systems however, there can be spatial autocorrelation whereby data collected in nearby areas are not independent of one another which violates the assumption of most statistical tests. It is therefore becoming commonplace for ecological studies to study spatial autocorrelation to both eliminate error (accounting for a nuisance variable that could give false positives) and to better understand the spatial structure of their system of interest. Indeed, the mechanisms that lead to spatial autocorrelation are often associated with behaviors and/or intrinsic characteristics …

The Biology Of Fun: Do Birds Just Want To Have A Good Time?, Carley J. Langley, Jonathan R. Moore

UROP Posters

The intention of this research project was to delve into the ecological study of playfulness and what appears to be fun in a broad range of bird species. (1) Do all birds exhibit playfulness and use fun? And if so, (2) how have these behaviors contributed to their evolutionary success? Past research has already been underway to biological define what constitutes both “fun” and “play” in animal species. In the past the majority of all test subjects have been mammals, however in the past decade (and especially in the past five years) other vertebrate species such as birds are beginning …

Macroalgal Detritus And Food-Web Subsidies Along An Arctic Fjord Depth-Gradient, Paul E. Renaud, Therese S. Løkken, Lis L. Jørgensen, Jørgen Berge, Beverly J. Johnson

All Faculty Scholarship

Tight coupling between pelagic and benthic communities is accepted as a general principle on Arctic shelves. Whereas this paradigm has been useful for guiding ecological research, it has perhaps led to a disproportionate focus on POM and ice algae as the most likely sources of carbon for the benthic food web. Arctic shelves are complex systems, including banks, fjords, and trough systems up to 350 m or more in depth. In this stable-isotope study, 13 different potential carbon sources were analyzed for their contribution to the food-webs of Isfjorden, Svalbard. A mixing model with herbivorous copepods and grazing sea urchins …

The Root Of Sustainability: Investigating The Relationship Between Medicinal Plant Conservation And Surface Mining In Appalachia, Jessica B. Turner

Graduate Theses, Dissertations, and Problem Reports (ETD)

Since European colonization, Appalachian culture has been based on resource extraction, such as coal mining, timbering, and Non-Timber Forest Product (NTFP) harvest. Surface mining degrades forest habitat for medicinal plants, especially the habitat for the internationally valuable medicinal herb, American ginseng (Panax quinquefolius L.), and the NTFP culture associated with this plant. The relationship between medicinal plant conservation and surface mining must be studied with a non- traditional, multi-faceted approach: culturally, economically, and ecologically. (1) Using community-based participatory surveys, I determined how ginseng harvesters and non- harvesters in West Virginia communities view the relationship between surface mining and ginseng harvest. …

Correlation Analysis Of Climatic Variables, Migration And Dengue Cases In Southeast Florida, Brunilda Lugo

Walden Dissertations and Doctoral Studies

Dengue fever is a debilitating, viral, mosquito-borne disease occurring in tropical and subtropical areas in the world. The majority of dengue cases in the United States were acquired in endemic areas by travelers or immigrants. However, in recent years, autochthonous (locally acquired) dengue cases have been diagnosed in Florida. The purpose of this study was to find an association between potential risk factors and the expansion of dengue fever in the United States. Guided by the eco-bio-social framework, which offers a broad assessment of risk factors for the illness, a retrospective design was used with archival data to correlate changes …

Throughfall Nutrients In A Degraded Indigenous Fagus Orientalis Forest And A Picea Abies Plantation In The Of North Of Iran, Parisa Abbasian, Pedram Attarod, Seyed Mohammad Moein Sadeghi, John T. Van Stan, Seyed M. Hojjati

Earth, Environment & Sustainability: Faculty Publications

Aim of study: The objective of this study was to compare the quantity and quality of TF (throughfall) in an indigenous, but degraded, stand of Fagus orientalis and Picea abies plantation.

Area of study: Forests of Kelar-Dasht region located in Mazandaran province, northern Iran.

Material and Methods: TF measured by twenty collectors that were distributed randomly underneath each stand. For 21 storms sampled in 2012 (August-December) and 2013 (April-June), we analyzed pH, EC, Ca2+, Mg2+, K+, NO3-, and P of gross rainfall (GR) and TF.

Main results: Cumulative interception (I) for F. orientalis and P. abies were 114.2 mm and …

Scales Of Resilience: Community Stability, Population Dynamics, And Molecular Ecology Of Brook Trout In A Riverscape After A Large Flood, Erin V. Rodgers

Antioch University Dissertations & Theses

Climate change in the northeastern United States currently and in future decadal predictions is characterized by warmer average temperatures and more frequent and intense storm events. Many aquatic organisms that thrive below a certain temperature threshold, such as brook trout, are being pushed towards their upper thermal limits, ultimately lowering their probability of survival and resilience to disturbance. In late-August and early-September 2011, Hurricane Irene and Tropical Storm Lee created an extended flood in the Delaware Water Gap region of Pennsylvania and New Jersey, as well as much of the northeast. This dissertation examines the effects of this flood on …

Photophysiological And Biochemical Effects Of Co2 And Temperature Levels On Cystoseira Tamariscifolia, Collected On Southern Spain, Psm Celis-Pla, B Martinez, Jm Hall-Spencer, N Korbee, Fl Figueroa

School of Biological and Marine Sciences

No abstract provided.

Current Land Bird Distribution And Trends In Population Abundance Between 1982 And 2012 On Rota, Mariana Islands, Richard J. Camp, Kevin W. Brink, P. Marcos Gorreson, Fred A. Amidon, Paul Radley, S. Paul Berkowitz, Paul C. Banko

Research outputs 2014 to 2021

The western Pacific island of Rota is the fourth largest human-inhabited island in the Mariana archipelago and designated an Endemic Bird Area. Between 1982 and 2012, 12 point-transect distance-sampling surveys were conducted to assess bird population status. Surveys did not consistently sample the entire island; thus, we used a ratio estimator to estimate bird abundances in strata not sampled during every survey. Trends in population size were reliably estimated for 11 of 13 bird species, and 7 species declined over the 30-y time series, including the island collared-dove Streptopelia bitorquata, white-throated ground-dove Gallicolumba xanthonura, Mariana fruit-dove Ptilinopus roseicapilla, collared kingfisher …

The Effects Of Tropical Storms And Hurricanes On Phytoplankton And Nutrient Concentrations In Wetland-Estuary Transition Zones Along The Gulf Coast, Tiffany Chantelle Johnson

LSU Master's Theses

Two consecutive storms made landfall along the Northern Gulf of Mexico on June and August 2012 (Tropical Storm Debby, 06/26/2012; Isaac, 08/28/2012, Category (Cat) 1 Saffir-Simpson Hurricane Scale). Each storm passed within 48 to 273 km of one of seven wetland-estuary transition zone sampling sites, and indirect storm effects associated with changes in freshwater discharge and an inflow of inorganic nutrients were observed at five of the seven sites. To assess the impacts of the 2012 hurricanes on hydrology, nutrient concentrations, and phytoplankton concentrations at transition zones along the Gulf Coast, a within-sites analysis along with a seasonal analysis were …

Civic Community, Structural Disadvantage, And Suicide: An Ecological Analysis Of Middle-Age Non-Hispanic White Male Suicide Across The Rural-Urban Continuum, Kayla R. Fontenot

LSU Doctoral Dissertations

This dissertation is a county-level sociological examination of middle-age (35-64) non-Hispanic white male suicides. Although an extensive amount of literature exists on ecological suicide, studies have largely ignored the correlates of suicide among this population group because this stage of the life course has historically demonstrated relatively low and stable rates of suicide. However, suicide rates among middle-age adults have increased dramatically over the last decade, calling for an examination of the correlates of suicide specific to this group. Moreover, the extant suicide literature has largely ignored the possibility of a structural disadvantage-suicide link, as well as the influence of …

Dendrotempestology: Identifying The Statistical Relationship Between Hurricanes And Tree Growth In The Pine Savannas Of Coastal Mississippi, Clay Stephens Tucker

LSU Master's Theses

Hurricanes cause massive destruction of property and land through high wind speeds, high precipitation, and flooding from storm surge inundation. Hurricane Katrina produced nearly an 8.5 meter-high storm surge at Pass Christian, Mississippi. The envelope of high water from Hurricane Katrina covered a large area of the Gulf Coast including, but not limited to, the area from the Atchafalaya Bay in Louisiana to Mobile Bay in Alabama. This study assesses the relationship between hurricane characteristics (i.e., storm surge and maximum wind) and tree growth using coastal pine tree cores taken in Grand Bay National Estuarine Research Reserve (GBNERR). GBNERR, an …

Site-Specific Habitat And Landscape Associations Of Rusty Blackbirds Wintering In Louisiana, Sinead Mary Borchert

LSU Master's Theses

The Rusty Blackbird (Euphagus carolinus) has gained notoriety in recent years as one of the fastest declining North American bird species, with a global population loss of as much as 95%. Causes of the decline are not completely understood, but the high rate of forested wetland change in the southeastern United States suggests that wintering habitat degradation may be a primary driver. To better inform management on critical wintering grounds, I surveyed 68 sites in Louisiana where Rusty Blackbirds had been known to occur to address how occupancy changes with habitat type and colonization and extinction rates vary with ground …

Investigations Into Ecogeomorphodynamics Of Coastal Embryo Dunes At Padre Island National Seashore, Texas, Katherine Anne Renken

LSU Doctoral Dissertations

This dissertation is an investigation into the interplay between vegetation and aeolian processes in the coastal embryo dune environment at Padre Island National Seashore, Texas. Vegetation is a geomorphic agent, altering aeolian process dynamics. This research adopted a three-pronged approach to improving our understanding of ecogeomorphodynamics in the coastal environment. The first study analyzed large-scale spatiotemporal trends in the vegetation community of the embryo dune environment in order to contextualize smaller scale aeolian processes. Results of this study demonstrated that there was a clear transition in community assemblage from the seaward edge of the embryo dune zone, where species functioned …

Historical And Current Population Patterns Of The Staghorn Coral (_Acropora Cervicornis_) In Dry Tortugas National Park, Kaitlyn Lizza

USF Tampa Graduate Theses and Dissertations

Acropora cervicornis was once one of the dominant reef building corals of the Caribbean, Florida Keys, and Dry Tortugas (DRTO), but since the 1970’s populations have been decimated throughout their geographic range. Recently, a repopulation was documented through detailed benthic surveys conducted by the U.S. Geological Survey at three locations (Pulaski Shoal, East Key, and Loggerhead Key) within DRTO. Benthic surveys using the U.S Geological Survey’s Along-Track Reef Imaging System (ATRIS) revealed hundreds of previously undocumented colonies.

These discoveries have provided a unique data-set, allowing a comparison between the historical (1883, 1976) and contemporary distributions (2009, 2011) of A. cervicornis. …

Linking Classroom Learning And Research To Advance Ideas About Social-Ecological Resilience, Natalie C. Ban, Emily Boyd, Michael Cox, Chanda L. Meek, Michael Schoon, Sergio Villamayor-Tomas

Dartmouth Scholarship

There is an increasing demand in higher education institutions for training in complex environmental problems. Such training requires a careful mix of conventional methods and innovative solutions, a task not always easy to accomplish. In this paper we review literature on this theme, highlight relevant advances in the pedagogical literature, and report on some examples resulting from our recent efforts to teach complex environmental issues. The examples range from full credit courses in sustainable development and research methods to project-based and in-class activity units. A consensus from the literature is that lectures are not sufficient to fully engage students in …