Estimating Seasonal Variation In Condition Of Yellow Perch,
2017
Bemidji State University
Estimating Seasonal Variation In Condition Of Yellow Perch, Emily Anne Powers
Biology Graduate Theses
Research has shown that Yellow Perch Perca flavescens, found throughout lakes and streams of North America, are good indicators of environmental health. Due to the correlation between fish condition and ecosystem health it is essential to reliably estimate condition to better manage our fisheries. Therefore, the study objectives were to measure the seasonal changes in adult Yellow Perch percent dry weight (PDW), and compare the reliability of bioelectrical impedance analysis (BIA) and morphometric-based estimates of condition. The seasonal fluctuations in average monthly PDW were measured over a two- year period and were sinusoidal in shape with peaks in August 2015 …
Plasma Metabolites Reveal Changes In Physiological State Of Eared Grebes (Podiceps Nigricollis) During Three Non-Migratory Periods,
2017
University of San Diego
Plasma Metabolites Reveal Changes In Physiological State Of Eared Grebes (Podiceps Nigricollis) During Three Non-Migratory Periods, Allison A. Yoshida
Theses
Energy storage and use during the annual cycle of migratory birds is dynamic especially during migration. However, considerable amounts of the annual cycle are spent not migrating, and the physiological state of birds during these non-migratory periods is not well understood. We compared plasma metabolites (TRIG, BUTY, URIC, GLY) in Eared Grebes (Podiceps nigricollis) residing at three important areas when they are not migrating: fall staging (postbreeding at Mono Lake, California), spring staging (pre-breeding at Great Salt Lake, Utah), and an extended stopover prior to spring staging (Salton Sea, California). Plasma metabolites were also measured in resting and active grebes …
Beavers,
2017
National Wildlife Research Center
Beavers, Jimmy D. Taylor, Greg K. Yarrow, James E. Miller
Wildlife Damage Management Technical Series
The American beaver (Castor canadensis) (Figure 1) is known as an “ecosystem engineer” because of the benefits their dams provide to biological diversity and ecosystem function. It also is considered a “keystone species” because of its ability to transform its environment, creating new habitats upon which other species depend. Despite the many positive benefits beavers provide through foraging and dam building, beavers also create conflict with people when their activities cause damage. The authors of this publication acknowledge and appreciate the many positive benefits that beavers provide; however, the focus of this publication is to provide basic information on beaver …
Testing Of Great Bay Oysters For Two Protozoan Pathogens,
2017
New Hampshire Fish and Game Department
Testing Of Great Bay Oysters For Two Protozoan Pathogens, Douglas E. Grout
PREP Reports & Publications
Two protozoan pathogens, Haplosporidium nelsoni (MSX) and Perkinsus marinus (Dermo) are known to be present in Great Bay oysters. With funds provided by the Piscataqua Region Estuaries Partnership (PREP), the Marine Fisheries Division of the New Hampshire Fish and Game Department (NHFG) continues to assess the presence and intensity of both of these disease conditions in oysters from the major natural beds within the Great Bay estuarine system. Histological examinations of Great Bay oysters have also revealed other endoparasites
The North American Perching And Dabbling Ducks: Their Biology And Behavior,
2017
University of Nebraska - Lincoln
The North American Perching And Dabbling Ducks: Their Biology And Behavior, Paul Johnsgard
Zea E-Books Collection
This volume, the fourth in a series of books that collectively update and expand P. A. Johnsgard’s 1975 The Waterfowl of North America, summarizes research findings on this economically and ecologically important group of waterfowl. The volume includes the mostly tropical perching duck tribe Cairinini, of which two species, the muscovy duck and the wood duck, are representatives. Both species are adapted for foraging on the water surface, mostly on plant materials, but typically perch in trees and nest in elevated tree cavities or other elevated recesses. This volume also includes the dabbling, or surface-feeding, duck tribe Anatini, a …
Conservation Status Of The American Horseshoe Crab, (Limulus Polyphemus): A Regional Assessment,
2017
U.S. Geological Survey
Conservation Status Of The American Horseshoe Crab, (Limulus Polyphemus): A Regional Assessment, David R. Smith, H. Jane Brockmann, Mark Beekey, Timothy L. King, Michael J. Millard, Jaime Zaldívar-Rae
Biology Faculty Publications
Horseshoe crabs have persisted for more than 200 million years, and fossil forms date to 450 million years ago. The American horseshoe crab (Limulus polyphemus), one of four extant horseshoe crab species, is found along the Atlantic coastline of North America ranging from Alabama to Maine, USA with another distinct population on the coasts of Campeche, Yucatán and Quintana Roo in the Yucatán Peninsula, México. Although the American horseshoe crab tolerates broad environmental conditions, exploitation and habitat loss threaten the species. We assessed the conservation status of the American horseshoe crab by comprehensively reviewing available scientific information on its range, …
Bioaccumulation Of Metallic Trace Elements And Antioxidant Enzyme Activities In Apfelbeckia Insculpta (L. Koch, 1867) (Diplopoda: Callipodida) From The Cave Hadži-Prodanova Pećina (Serbia),
2017
University of Belgrade
Bioaccumulation Of Metallic Trace Elements And Antioxidant Enzyme Activities In Apfelbeckia Insculpta (L. Koch, 1867) (Diplopoda: Callipodida) From The Cave Hadži-Prodanova Pećina (Serbia), Jelena Vranković, Slavica Borković-Mitić, Bojan Ilić, Milanka Radulović, Slaviša Milošević, Slobodan Makarov, Bojan Mitić
International Journal of Speleology
The concentration of 10 metallic trace elements or MTE (Cu, Fe, Zn, Mn, As, Hg, Pb, Cd, Ni, and Cr) was measured in specimens of the troglophilic millipede Apfelbeckia insculpta (L. Koch, 1867) and sediment of the cave Hadži-Prodanova Pećina in western Serbia. Some MTE, like Fe and Mn, displayed much higher concentrations compared to other elements, both in the sediment and in the body of A. insculpta. On the other hand, estimation of the bioaccumulation factor (BAF) in both males and females of A. insculpta showed values greater than 1 for xenobiotic elements compared to those that are essential. …
Monitoring Macroalgae In The Great Bay Estuary For 2015,
2017
Jackson Estuarine Laboratory
Monitoring Macroalgae In The Great Bay Estuary For 2015, David M. Burdick, Arthur C. Mathieson, Sydney Nick, Christopher R. Peter
PREP Reports & Publications
In 2015, five of the eight locations with fixed intertidal transects were sampled as part of the long-term effort to monitor macroalgae in the Great Bay Estuary. With the completion of the third year of the project, all eight locations have been sampled at least once, two years of data have been collected for four locations, and three years of data have been collected for one location, Monitoring results from 2015 show high levels of cover of nuisance green or red algae (Ulva and Gracilaria, respectively) at all sites sampled. Nuisance algae is characterized as fast-growing; it can interfere with …
Use Of Erroneous Wolf Generation Time In Assessments Of Domestic Dog And Human Evolution,
2017
USGS Northern Prairie Wildlife Research Center
Use Of Erroneous Wolf Generation Time In Assessments Of Domestic Dog And Human Evolution, L. David Mech
United States Geological Survey, Northern Prairie Wildlife Research Center: Publications
Scientific interest in dog domestication and parallel evolution of dogs and humans (1) has increased recently (2-4), and various important conclusions have been drawn based on how long ago the calculations show dogs were domesticated from ancestral wolves (Canis lupus). According to Skoglund et al. (2015:3), calculation of this duration is based on “the most commonly assumed mutation rate of 1 x 10-8 per generation and a 3-year gray wolf generation time . . .” (5). It is unclear on what information the assumed generation time is based, but the latest paper (6) seems to have based generation time on …
Career: Robust Aquatic Habitat Representation For Water Resources Decision-Making,
2017
Utah State University
Career: Robust Aquatic Habitat Representation For Water Resources Decision-Making, Sarah Null
Funded Research Records
No abstract provided.
Experimental Impacts Of Climate Warming And Ocean Carbonation On Eelgrass Zostera Marina,
2017
Old Dominion University
Experimental Impacts Of Climate Warming And Ocean Carbonation On Eelgrass Zostera Marina, Richard C. Zimmerman, Victoria J. Hill, Malee Jinuntuya, Billur Celebi, David Ruble, Miranda Smith, Tiffany Cedeno, W. Mark Swingle
OES Faculty Publications
CO2 is a critical and potentially limiting substrate for photosynthesis of both terrestrial and aquatic ecosystems. In addition to being a climate-warming greenhouse gas, increasing concentrations of CO2 will dissolve in the oceans, eliciting both negative and positive responses among organisms in a process commonly known as ocean acidification. The dissolution of CO2 into ocean surface waters, however, also increases its availability for photosynthesis, to which the highly successful, and ecologically important, seagrasses respond positively. Thus, the process might be more accurately characterized as ocean carbonation. This experiment demonstrated that CO2 stimulation of primary production enhances …
Delta‐Flux: An Eddy Covariance Network For A Climate‐Smart Lower Mississippi Basin,
2017
University of Arkansas, Fayetteville
Delta‐Flux: An Eddy Covariance Network For A Climate‐Smart Lower Mississippi Basin, Benjamin R. K. Runkle, James R. Rigby, Michele L. Reba, Saseendran S. Anapalli, Joydeep Bhattacharjee, Ken W. Krauss, Lu Liang, Martin A. Locke, Kimberly A. Novick, Ruixiu Sui, Kosana Suvocarev, Paul M. White Jr.
Biological and Agricultural Engineering Faculty Publications and Presentations
Networks of remotely monitored research sites are increasingly the tool used to study regional agricultural impacts on carbon and water fluxes. However, key national networks such as the National Ecological Observatory Network and AmeriFlux lack contributions from the Lower Mississippi River Basin (LMRB), a highly productive agricultural area with opportunities for soil carbon sequestration through conservation practices. The authors describe the rationale to create the new Delta‐Flux network, which will coordinate efforts to quantify carbon and water budgets at seventeen eddy covariance flux tower sites in the LMRB. The network structure will facilitate climate‐smart management strategies based on production‐scale and …
Estimating Biomass Of Berries Consumed By Gray Wolves,
2017
Northern Michigan University
Estimating Biomass Of Berries Consumed By Gray Wolves, Thomas Gable, Steve K. Windels, John G. Bruggink
Journal Articles
Gray wolves (Canis lupus) consume berries and other wild fruits seasonally when available or abundant. However, a method to convert percent frequency of occurrence or percent volume of berries in wolf scats to percent biomass has not yet been developed. We used estimates of the average number of blueberry (Vaccinium spp.) seeds in 10 individual wolf scats collected in and adjacent to Voyageurs National Park, Minnesota, USA, along with published values of the number of seeds per blueberry and blueberry masses to estimate that a wolf scat containing only berries equated to an average of 0.468 kg …
Multiple Mating By Females In The Chesapeake Bay Blue Crab Callinectes Sapidus Population,
2017
Old Dominion University
Multiple Mating By Females In The Chesapeake Bay Blue Crab Callinectes Sapidus Population, S. Wells, J. Mcconaugha, L. Horth
OES Faculty Publications
Mature females of the Chesapeake Bay (USA) blue crab Callinectes sapidus population mate multiple times. Microsatellite DNA analysis of sperm stored in the spermathecae has shown that virtually all (~97%, 104 out of 107) females collected in a 2009−2010 study mated with at least 2 males. Enumeration of stored sperm revealed that despite multiple mating, some females did not have enough sperm to fulfill their lifetime reproductive potential, suggesting that female blue crabs may experience varying levels of sperm limitation. This could result from multiple factors. The average body size of males in the population has decreased, which reduces the …
An Assessment Of Potential False Positive E.Coli Pyroprints In The Cplop Database,
2017
California Polytechnic State University, San Luis Obispo
An Assessment Of Potential False Positive E.Coli Pyroprints In The Cplop Database, Skyler A. Gordon
Master's Theses
The genetic information found in each species of organism is unique, and can be used as a tool to differentiate at the molecular level. This has caused rapid genotyping methods to become the cornerstone of a new area of research dependent on reading the genome as a form of identification. One of these specific identification methods, known as pyroprinting, relies on the small variation of DNA sequences within the same species to develop a unique, reproducible fingerprint. By simultaneously pyrosequencing multiple polymorphic loci within the ribosomal operons known as the intergenic transcribed spacers, a reproducible output is obtained, known as …
Habitat Selection By The Northern Long-Eared Myotis (Myotis Septentrionalis) In The Midwestern United States: Life In A Shredded Farmscape,
2017
University of Nebraska at Omaha
Habitat Selection By The Northern Long-Eared Myotis (Myotis Septentrionalis) In The Midwestern United States: Life In A Shredded Farmscape, Jeremy A. White, Patricia Freeman, Cliff A. Lemen
Transactions of the Nebraska Academy of Sciences and Affiliated Societies
Populations of the Northern Long-Eared Myotis (Myotis septentrionalis) have declined dramatically in recent years in eastern North America due to white-nose syndrome. Although M. septentrionalis was once common in parts of eastern North America, few studies have examined habitat selection of this species in an agricultural landscape. We used acoustical methods to quantify bat activity and construct a habitat model of M. septentrionalis in an intensively farmed area in the Midwestern United States, where mortality from white-nose syndrome has not yet been observed. Our study confirms that M. septentrionalis prefers forest and avoids open habitats in this agricultural …
Nitrogen Sustainability: Impediments To Action And Communication,
2017
USEPA
Nitrogen Sustainability: Impediments To Action And Communication, Eric E. Jorgensen
Journal of Environmental Sustainability
“Sustainability” is widely used to imply the presence of explicit consideration of environmentally friendly needs and that high societal-value is placed on those needs. However, it is abundantly clear after 30 years that talking about sustainability and achieving it are two entirely different things. The core concept underlying sustainability is that current human practices and activities be conducted so as to not degrade prospects for future generations. With nitrogen, conflicts about sustainability in-theory and sustainability in-practice are close to the surface because of nitrogen’s central role in food production and economic activity. Measures of nitrogen inputs commonly range as high …
Symposium Volume 3, Issue 1,
2017
California Polytechnic State University, San Luis Obispo
Symposium Volume 3, Issue 1
Symposium
Collection of research projects conducted by students of the College of Science and Math at California Polytechnic State University
Presentation,
2017
Illinois Mathematics and Science Academy
Presentation, Shruti Shakthivel '20, Meghana Karan '20
Living Green
No abstract provided.
Presentation,
2017
Illinois Mathematics and Science Academy
Presentation, Matt Niemiro '20, Micah Casey-Fusco '20
Living Green
No abstract provided.
