Historical Ecology Of The San Diego Sport Fishery: Catch Composition, Species Trends, And Fishing Effort From 1959 To 2011,
2021
University of San Diego
Historical Ecology Of The San Diego Sport Fishery: Catch Composition, Species Trends, And Fishing Effort From 1959 To 2011, Rebecca Schwartz Lesberg
Theses
Like ocean systems around the world, species targeted by the San Diego sportfishery are subject to myriad threats from human activity, with several species already showing documented decline. However, long-term fisheries datasets are often lacking, limiting natural resource managers’ ability to appropriately manage these ecologically and economically important species. Therefore, this study used daily reports published in two Southern California newspapers to examine changes in catch composition, effort, and catch per unit effort (CPUE) from 1959-2011 for the San Diego commercial passenger fishing vessel (CPFV) sportfishery. This study then tested the relationship between those patterns and three large scale oceanographic …
Functions And Applications Of Critical Zone Observatory Of Luancheng Agro-Ecosystem Experimental Station, Chinese Academy Of Sciences (Luancheng Critical Zone Observatory),
2021
Center for Agricultural Resources Research, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Shijiazhuang 050021, China Luancheng Agro-Ecocystem Experimental Station, Chinese Academy of Sciences, Shijiazhuang 050021, China
Functions And Applications Of Critical Zone Observatory Of Luancheng Agro-Ecosystem Experimental Station, Chinese Academy Of Sciences (Luancheng Critical Zone Observatory), Yanjun Shen, Leilei Min, Lin Wu, Yan-Jun Shen, Hongjun Li, Guanglu Zhang
Bulletin of Chinese Academy of Sciences (Chinese Version)
The Luancheng Agro-Ecosystem Experimental Station, the Chinese Academy of Sciences, is located in the piedmont plain area of North China Plain and the middle section of the Taihang Mountain alluvial plain. It is a typical representative of the high-yield agricultural eco-system in the groundwater irrigation area. Due to the large-scale and high-intensity agricultural production in recent decades, the regional groundwater has been seriously over exploited, and the risk of groundwater pollution has increased. However, the surface agro-ecosystem and aquifer are separated by thick vadose zones, hence the mechanism of the impact of surface agricultural activities on the quantity and quality …
Discovery Of Epiphytic Lichens In Connecticut Suggests Novel Introduction And Reintroduction Via Horticultural Practices,
2021
University of Connecticut - Storrs
Discovery Of Epiphytic Lichens In Connecticut Suggests Novel Introduction And Reintroduction Via Horticultural Practices, Henry A. Frye, Zachary Muscavitch, Bernard Goffinet
EEB Articles
The discovery of Teloschistes chrysophthalmus in Connecticut more than one hundred years since its last known occurrence is argued to result from human introduction. The species only occurred on the horticultural tree, Gleditsia triacanthos var. inermis, planted on the University of Connecticut campus. Gleditsia triacanthos is not indigenous to northeastern North America, but is widespread in the central United States. Other epiphytic macrolichens also recorded on this phorophyte include Punctelia bolliana and Parmotrema austrosinense, both widespread in the central United States, and new to Connecticut and New England, respectively. This is likely the first reported case of combined …
Correlation Between Abundance Of Fossils In Harvester Ant Nest And Proximity Of Fossil Sites,
2021
Southern Adventist University
Correlation Between Abundance Of Fossils In Harvester Ant Nest And Proximity Of Fossil Sites, Hayeong Woo
Campus Research Month
Harvester ants have an interesting behavior of bone collecting. Therefore, harvester ant nests that are positioned around the fossil sites contain various fossil fragments. If there is a statistically significant correlation between the abundance of fossil fragments and the distance of the ant nests from the main fossil sites, ant nests can potentially be used to predict the proximity of the main fossil sites.
Adaptive Plasticity Of Coloration In Response To Environmental Change,
2021
Murray State University
Adaptive Plasticity Of Coloration In Response To Environmental Change, Karissa Coffield
Scholars Week
When rapid environmental changes occur, different selective forces can create phenotypic trade-offs in which a trait can provide fitness benefits or costs under different environmental conditions. Amphibians are particularly vulnerable to environmental change, and previous research has revealed that some species will plastically respond to variation in temperature and ultra-violet radiation (UVR) by altering their coloration. Divergent selection on coloration may change with elevation and climate induced shifts in temperature because high temperatures are likely to result in lighter color morphs but as elevation increases, UVR exposure increases leading to the prediction that darker color morphs will be more common. …
Insect Hotels: A Biological Remedy For The Survivability Of Insects And The Human Species,
2021
Lewis University
Insect Hotels: A Biological Remedy For The Survivability Of Insects And The Human Species, Lewis University
Sustainability
No abstract provided.
Ecological Impacts Of Apiaries,
2021
Lewis University
Ecological Impacts Of Apiaries, Lewis University
Sustainability
The Come Clean, Go Green competition is a program dedicated to making Lewis a more sustainable campus with ideas from Lewis Students across all disciplines. The program is sponsored by the Lewis University Sustainability Council and supported by, the sustainability fee, which was approved last year. The fee will fund the implementation of sustainability projects on campus that are chosen by students.
Warming Stimulates Sporulation Rates And Alters Community Structure Of Litter-Associated Fungi In Streamside Channel Experiment,
2021
Coastal Carolina University
Warming Stimulates Sporulation Rates And Alters Community Structure Of Litter-Associated Fungi In Streamside Channel Experiment, Kaitlin D. Beasley-Polko
Honors Theses
Fungi, such as aquatic hyphomycetes, are important decomposers of plant litter in temperate forested headwater streams providing energy and nutrients for the higher trophic levels in these ecosystems. According to current climate change predictions, stream water temperatures are expected to rise significantly in the near future. This project addressed the effects of temperature on sporulation rates and community structure of aquatic hyphomycetes on substrates of different carbon quality (maple and rhododendron leaf litter and wood veneers). The experiment was conducted in streamside channels fed with stream water (ambient, +2°C and +4°C) and set up to mimic small streams. We found …
A Comparison Of The Effects Of Ionizing Radiation On Wild Boar Populations In The Chernobyl Exclusion Zone And The Fukushima Exclusion Zone,
2021
University of South Carolina - Columbia
A Comparison Of The Effects Of Ionizing Radiation On Wild Boar Populations In The Chernobyl Exclusion Zone And The Fukushima Exclusion Zone, Victoria Bosch
Senior Theses
Humans are usually evacuated following a nuclear power plant (NPP) accident; however, the wildlife remains in the surrounding area that is blanketed in radionuclides. Despite the known effects of exposure to ionizing radiation on an individual’s health, the effects on wildlife remain unclear. The exclusion zones surrounding the Chernobyl NPP and Fukushima NPP accident sites provide an ideal study system to examine how mammal populations are influenced by chronic, low-dose radiation exposure. The present study examines wild boar abundance and reproductive success in both locations to determine how not only radiation exposure but also the sudden changes in human disturbance …
Morph- And Sex-Specific Differences In Corticosterone Of The Arizona Tiger Salamander (Ambystoma Mavortium Nebulosum),
2021
Murray State University
Morph- And Sex-Specific Differences In Corticosterone Of The Arizona Tiger Salamander (Ambystoma Mavortium Nebulosum), Megan Zerger
Scholars Week
Life history morph, sex, and body condition are traits that may influence stress within salamander populations because of differences in physiology and environmental conditions. Given widespread declines and the effects chronic stress can have on amphibian health, it is important to understand within-population drivers of stress and how population level variation may influence population viability. Thus, the objective of our study was to assess how corticosterone varies within the Arizona tiger salamander (Ambystoma mavortium nebulosum) population at the Mexican Cut Nature Preserve. We used a non-invasive skin swabbing method to collect baseline and elevated corticosterone from paedomorph (aquatic …
Comparison Of Gray Squirrel (Sciurus Carolinensis) And Fox Squirrel (Sciurus Niger) In Order To Explore Genes That Confer A Fitness Advantage,
2021
University of Nebraska at Omaha
Comparison Of Gray Squirrel (Sciurus Carolinensis) And Fox Squirrel (Sciurus Niger) In Order To Explore Genes That Confer A Fitness Advantage, Joshua Franzen
UNO Student Research and Creative Activity Fair
Mutations in the MC1R gene is associated with melanism, or black fur, and the presence of a 24 base pair deletion in the MC1R gene of fox and gray squirrels suggests a shared ancestry between the two species. This could be due to a mutation in a common ancestor or previous mating between species. Evidence has shown that the most likely cause for the presence of MC1R in both species is previous mating between species. If this did occur, then it is possible that other genes traveled between species along with the mutated MC1R gene. Conserved genes shared between species …
Monitoring For Wolves,
2021
USDA-APHIS-Wildlife Services Mountain View, Wyoming
Monitoring For Wolves, Jeff Hansen, Cat Urbigkit
Wildlife Damage Management Technical Series
Gray wolves (Canis lupus) and Mexican wolves (Canis lupus baileyi) once again roam across landscapes where they have been absent for decades (Figure 1). With wolf range expansion comes increased opportunities for conflicts when wolves harass or prey on domestic livestock or other animals. Wolves have relatively high reproductive and dispersal rates but detecting individual animals in low-density populations is difficult without a concerted monitoring effort. In fact, wolf presence in an area often is not known until there is a confirmed livestock depredation. Ranchers and wildlife damage management experts need not wait for livestock depredations to occur before wolves …
Geographic Distribution: Eleutherodactylus Coqui (Common Coqui). Usa: Florida.,
2021
Florida Department of Agriculture and Consumer Services
Geographic Distribution: Eleutherodactylus Coqui (Common Coqui). Usa: Florida., Louis A. Somma
Papers in Herpetology
A geographic interception record for Eleutherodactylus coqui in Suwanee County, Florida.
Geographic Distribution: Iguana Iguana (Green Iguana): Usa: Florida.,
2021
University of Florida
Geographic Distribution: Iguana Iguana (Green Iguana): Usa: Florida., Louis A. Somma, Mark T. Bailey
Papers in Herpetology
A geographic distribution record for Iguana iguana in Marion County, Florida.
Using Aerial Photogrammetry And Sexually Dimorphic Measurements To Investigate Seasonal Differences In School Composition Of Delphinus Spp. Off Southern California,
2021
University of San Diego
Using Aerial Photogrammetry And Sexually Dimorphic Measurements To Investigate Seasonal Differences In School Composition Of Delphinus Spp. Off Southern California, Samantha Gm Leander
Theses
Insights into school composition can provide a means to understand basic biology and ecology, including reproductive patterns. They can also be applied to conservation assessments, allowing for better understanding of the potentially differential vulnerability of demographic groups to natural or anthropogenic disturbances that may influence their populations. However, the two subspecies of common dolphins in the waters off California (Delphinus delphis delphis and D. d. bairdii) form large, energetic groups that make characterization of school composition difficult. Remotely controlled drones now offer the opportunity for the study of school composition in Delphinus spp., allowing for precise morphometric measurements …
Mussel Musings On The Powell River,
2021
Lincoln Memorial University
Mussel Musings On The Powell River, Aggy Vanderpool
Cumberland Mountain Naturalist
No abstract provided.
A New Vine Snake (Reptilia, Colubridae, Oxybelis) From Peru And Redescription Of O. Acuminatus,
2021
University of Wisconsin - Eau Claire
A New Vine Snake (Reptilia, Colubridae, Oxybelis) From Peru And Redescription Of O. Acuminatus, Robert C. Jadin, Michael J. Jowers, Sarah A. Orlofske, William E. Duellman, Christopher Blair, John C. Murphy
Publications and Research
The Brown Vine Snake, Oxybelis aeneus, was until recently considered a single species, distributed from southern Arizona through the Neotropics into southeastern Brazil. However, newly conducted research restructured the species with a substantial taxonomic revision, recognizing five additional taxa (i.e. O. koehleri, O. microphthalmus, O. potosiensis, O. rutherfordi, O. vittatus) in this species complex. This revision focused on populations in North America, Central America, and northern South America while neglecting the southern portion of its distribution. Here, we examine the taxonomic history of the complex and use it along with specimen data to resurrect O. acuminatus from southeastern Brazil. Finally, …
A Record Of Vapour Pressure Deficit Preserved In Wood And Soil Across Biomes,
2021
University of Oregon
A Record Of Vapour Pressure Deficit Preserved In Wood And Soil Across Biomes, Adrian Broz, Gregory J. Retallack, Toby M. Maxwell, Lucas C.R. Silva
Biology Faculty Publications and Presentations
The drying power of air, or vapour pressure deficit (VPD), is an important measurement of potential plant stress and productivity. Estimates of VPD values of the past are integral for understanding the link between rising modern atmospheric carbon dioxide (pCO2) and global water balance. A geological record of VPD is needed for paleoclimate studies of past greenhouse spikes which attempt to constrain future climate, but at present there are few quantitative atmospheric moisture proxies that can be applied to fossil material. Here we show that VPD leaves a permanent record in the slope (S) of least-squares …
Data Repository For "Use Of Redwood Basal Hollows By Bats: A Focus On The Townsend’S Big-Eared Bat On The North Coast Of California",
2021
Cal Poly Humboldt
Data Repository For "Use Of Redwood Basal Hollows By Bats: A Focus On The Townsend’S Big-Eared Bat On The North Coast Of California", Amon J. Armstrong
Research Data Sets
Loss of roosting resources, either through disturbance or removal, negatively affects bats. Identifying sensitive species and determining roost requirements are critical components in conserving their habitat. Cavity roosting bats on the North Coast of California are known to use hollows in large redwood trees. In this study, we examined the factors determining the use of basal tree hollows by different bat species at eight redwood forest sites in Del Norte, Humboldt, and Mendocino Counties, California. Bat guano was collected from 179 basal hollow roosts from 2017 to 2018, and guano mass was used as an index of roosting activity. Nine …
Understanding Patterns And Functional Impacts Of An Invasive Tree And Its Biological Control In A Riparian System,
2021
University of Denver
Understanding Patterns And Functional Impacts Of An Invasive Tree And Its Biological Control In A Riparian System, Annie L. Henry
Electronic Theses and Dissertations
Invasive species have become an inextricable part of the landscape, particularly in riparian plant communities, and removal is often a key component of restoration programs. Biological control (biocontrol) is a method of removal that is often both efficient and effective. However, the impact of biocontrol on target species and indirect effects from invasive species removal can be hard to predict. While monitoring the impact of invasive species removal usually involves some species-based assessment such as changes in diversity, historically dominant species or native species, these strategies do not typically provide insight into the mechanisms underlying plant community response to removal. …
