Drivers And Patterns Of Iron Redox Cycling From Surface To Bedrock In A Deep Tropical Forest 1 Soil: A New Conceptual Model, Steven J. Hall, Daniel Liptzin, Heather L. Buss, Kristen Deangelis, Whendee L. Silver
Steven J. Hall
Iron (Fe) reduction and oxidation are important biogeochemical processes coupled to decomposition, nutrient cycling, and mineral weathering, but factors controlling their rates and spatial distribution with depth are poorly understood in terrestrial soils. In aquatic ecosystems, Fe reduction often occurs below a zone of oxic sediments. We tested an alternative conceptual model for Fe redox cycling in terrestrial soils using a deep humid tropical forest soil profile. We hypothesized that Fe reduction in anaerobic microsites scales with depth variation in labile C and Fe availability, as opposed to bulk oxygen (O2). We measured bulk O2 at multiple depths from 0 ...
Muskrats, 2018 Mississippi State University
Muskrats, James E. Miller
Wildlife Damage Management Technical Series
The muskrat (Ondatra zibethicus) is a common, semi-aquatic rodent native to the United States (Figure 1). It spends its life in aquatic habitats and is well adapted for swimming.
Although muskrats are an important part of native ecosystems, their burrowing and foraging activities can damage agricultural crops, native marshes and water control systems, such as aquaculture and farm ponds and levees. Such damage can significantly impact agricultural crops like rice that rely on consistent water levels for growth.
Muskrats also cause damage by eating agricultural crops, other vegetation, and crayfish, mussels and other aquaculture products. Loss of vegetation from muskrat ...
Data: Pre-Fire Disturbance History Modulates Relationships Between Ground Cover And Post-Fire Conifer Regeneration, Nathan Gill, Dan Jarvis, Tom Veblen, John Rogan, Dominik Kulakowski
Understory vegetation and ground cover drive many important ecosystem processes, including tree seedling regeneration. The exact effect of ground cover on tree seedling establishment, survival, and growth depends on biophysical context. In subalpine forests, this context is largely determined by disturbances such as beetle outbreak, blowdown, and fire. Compounded disturbances that overlap in short succession can alter stand properties and trajectories in ways that are not predictable from the additive impact of individual disturbances. The aim of this study is to examine how compounded Dendroctonus rufipennis (spruce beetle; SB) outbreak followed by fire and compounded wind blowdown followed by fire ...
Animal Suicide: Evolutionary Continuity Or Anthropomorphism?, 2018 Centro Medico Genneruxi
Animal Suicide: Evolutionary Continuity Or Anthropomorphism?, Antonio Preti
Animal Sentience: An Interdisciplinary Journal on Animal Feeling
Evolutionary processes are characterized by both continuity and discontinuity. Evidence on suicide in nonhuman animals is faint and often rests on the metaphorical or anthropomorphic use of the term. Suicidal behavior might be an evolutionary jump relatively recent in our species: a byproduct of living in groups of people who are not as closely related genetically as in social groups of nonhuman mammals.
Summer 2017 Survey Of Diamondback Terrapins In Jamaica Bay Wildlife Refuge, New York, 2017 Selected Works
Summer 2017 Survey Of Diamondback Terrapins In Jamaica Bay Wildlife Refuge, New York, Josephine Maresca
No abstract provided.
Learning To Live With Wolves: Community-Based Conservation In The Blackfoot Valley Of Montana, 2017 University of Montana
Learning To Live With Wolves: Community-Based Conservation In The Blackfoot Valley Of Montana, Seth M. Wilson, Elizabeth H. Bradley, Gregory A. Neudecker
We built on the existing capacity of a nongovernmental organization called the Blackfoot Challenge to proactively address wolf (Canis lupus)-livestock conflicts in the Blackfoot Valley of Montana. Beginning in 2007, wolves started rapidly recolonizing the valley, raising concerns among livestock producers. We built on an existing program to mitigate conflicts associated with an expanding grizzly bear population and worked within the community to build a similar program to reduce wolf conflicts using an integrative, multi-method approach. Efforts to engage the community included one-on-one meetings, workshops, field tours, and regular group meetings as well as opportunities to participate in data ...
Lake Sturgeon (Acipenser Fulvescens) Trophic Position And Movement Patterns In The Lower Niagara River, Ny, 2017 Buffalo State College
Lake Sturgeon (Acipenser Fulvescens) Trophic Position And Movement Patterns In The Lower Niagara River, Ny, Eric Bruestle
Great Lakes Center Masters Theses
Lake sturgeon Acipenser fulvescens were once widely distributed throughout the Laurentian Great Lakes. However, widespread overharvest and habitat degradation has diminished their numbers. The lower Niagara River, NY contains one of the few remaining recovering populations of lake sturgeon in New York State. The goal of this study was to characterize the trophic position of lake sturgeon in the context of an invasive species dominated food web and to describe their movement patterns and residency within the lower Niagara River. Stomach content analysis and stable nitrogen (δ15N) and carbon (δ13C) isotope analysis of tissue was used ...
Historical Change Of Seagrasses In The Mississippi And Chandeleur Sounds, 2017 University of Southern Mississippi
Historical Change Of Seagrasses In The Mississippi And Chandeleur Sounds, Linh Thuy Pham
Seagrasses are important coastal resources facing numerous stressors, and losses have been documented from local to global assessments. Under the broad theme of habitat loss and fragmentation, a study of historical change in total area and landscape configuration of seagrasses in the Mississippi and Chandeleur Sounds was conducted. Mapping data was collated from a multitude of previous projects from 1940 to 2011.
Comparisons of seagrass area among various studies that used different mapping methods can result in overestimation of area change and misleading conclusions of change over time. The vegetated seagrass area (VSA) data were generalized to a common resolution ...
A Novel Three-Way Interaction Among A Fish, Algae, And A Parasitic Copepod, 2017 CUNY Queens College
A Novel Three-Way Interaction Among A Fish, Algae, And A Parasitic Copepod, John Waldman
Publications and Research
No abstract provided.
Iowa Monarch Conservation, Pest Management And Crop Production, 2017 Iowa State University
Iowa Monarch Conservation, Pest Management And Crop Production, Steven P. Bradbury, Tyler Grant, Niranjana Krishnan
Integrated Crop Management Conference
The monarch butterfly population has experienced an 80% decline in North America over the past two decades (Brower et al., 2012; Pleasants and Oberhauser, 2013; Jepsen et al., 2015). The three to four hectares of occupied overwintering forest in 2016 and 2015 was well below a target of six hectares needed to support a resilient population and reduce the risk of quasi-extinction (loss of the North American migration) in the next 10 to 20 years (Semmens et al., 2016). In response to a petition to evaluate the status of the species, the U.S. Fish and Wildlife Service (USFWS) is ...
Weathered Mc252 Crude Oil-Induced Anemia And Abnormal Erythroid Morphology In Double-Crested Cormorants (Phalacrocorax Auritus) With Light Microscopic And Ultrastructural Description Of Heinz Bodies, 2017 Urika LLC
Weathered Mc252 Crude Oil-Induced Anemia And Abnormal Erythroid Morphology In Double-Crested Cormorants (Phalacrocorax Auritus) With Light Microscopic And Ultrastructural Description Of Heinz Bodies, Kendal E. Harr, Fred L. Cunningham, Chris A. Pritsos, Karen L. Pritsos, Thivanka Muthumalage, Brian S. Dorr, Katherine E. Horak, Katie C. Hanson-Dorr, Karen Dean, Dave Cacela, Andrew Mcfadden, Jane E. Link, Kate Healy, Pete L. Tuttle, Stephen J. Bursian
Brian S Dorr
Overview Of Avian Toxicity Studies For The Deepwater Horizon Natural Resource Damage Assessment, 2017 Texas Tech University
Overview Of Avian Toxicity Studies For The Deepwater Horizon Natural Resource Damage Assessment, Steven J. Bursian, Courtney R. Alexander, Fred L. Cunningham, Dave Cacela, Karen M. Dean, Brian S. Dorr, Christine K. Ellis, Céline A.J. Godard-Codding, Christopher G. Guglielmo, Katie C. Hanson-Dorr, Kendall E. Harr, Katherine A. Healy, Michael J. Hooper, Katherine E. Horak, John P. Isanhart, L V. Kennedy, Jane E. Link, Ivan Maggini, J K. Moye, Christine R. Perez, Chris A. Pritsos, Susan A. Shriner, K A. Trust, Pete L. Tuttle
Brian S Dorr
Dermal Exposure To Weathered Mc252 Crude Oil Results In Echocardiographically Identifiable Systolic Myocardial Dysfunction In Double-Crested Cormorants (Phalacrocorax Auritus), Kendal E. Harr, M Rishniw, Tracy L. Rupp, Dave Cacela, Karen Dean, Brian S. Dorr, Katie C. Hanson-Dorr, Kate Healy, Katherine E. Horak, Jane E. Link, Drury R. Reavill, Stephen J. Bursian, Fred L. Cunningham
Brian S Dorr
Organ Weights And Histopathology Of Double-Crested Cormorants (Phalacrocorax Auritus) Dosed Orally Or Dermally With Artificially Weathered Mississippi Canyon 252 Crude Oil, Kendal E. Harr, Drury R. Reavill, Stephen J. Bursian, Dave Cacela, Fred L. Cunningham, Karen Dean, Brian S. Dorr, Katie C. Hanson-Dorr, Kate Healy, Katherine E. Horak, Jane E. Link, Susan A. Shriner, Robert E. Schmidt
Brian S Dorr
Changes In White Cell Estimates And Plasma Chemistry Measurements Following Oral Or External Dosing Of Double-Crested Cormorants, Phalacocoraxauritus, With Artificially Weathered Mc252 Oil, 2017 Abt Consulting
Changes In White Cell Estimates And Plasma Chemistry Measurements Following Oral Or External Dosing Of Double-Crested Cormorants, Phalacocoraxauritus, With Artificially Weathered Mc252 Oil, Karen Dean, Stephen J. Bursian, Dave Cacela, Michael Carney, Fred L. Cunningham, Brian S. Dorr, Katie C. Hanson-Dorr, Kate Healey, Katherine E. Horak, Jane E. Link, Ian Lipton, Andrew Mcfadden, Moira A. Mckernan, Kendal E. Harr
Brian S Dorr
Spatially Explicit Model Of Areas Between Suitable Black Bear Habitat In East Texas And Black Bear Populations In Louisiana, Arkansas, And Oklahoma, 2017 Stephen F Austin State University
Spatially Explicit Model Of Areas Between Suitable Black Bear Habitat In East Texas And Black Bear Populations In Louisiana, Arkansas, And Oklahoma, Caitlin M. Glymph, Christopher Comer, Daniel Scognamillo, Daniel Unger, Yanli Zhang
Electronic Theses and Dissertations
Although black bears (Ursus americanus, Ursus americanus luteolus) were once found throughout the south-central United States, unregulated harvest and habitat loss resulted in severe range retractions and by the beginning of the twentieth century populations in Oklahoma, Louisiana, Texas and Arkansas were nearing extirpation. In response to these losses, translocation programs were initiated in Arkansas (1958-1968 & 2000-2006) and Louisiana (1964-1967 & 2001-2009). These programs successfully restored bears to portions of Louisiana and Arkansas, and, as populations in Arkansas began dispersing, to Oklahoma. In contrast, east Texas remains unoccupied despite the existence of suitable habitat in the region.
To facilitate the establishment ...
, Bonnie Becker, Michael Behrens
Native Olympia oysters have been the subject of widespread restoration efforts across the west coast, including in the Salish Sea. The ultimate goal of restoration is to establish populations that are self-sustaining or even exporting new offspring to other appropriate habitats. It is difficult to study the early life history of marine invertebrates, which have a microscopic and planktonic larval form and often episodic settlement pulses. However, being able to predict larval behaviors and settlement preferences can allow practitioners to design habitats, choose sites, and distribute restoration networks more effectively. The purpose of this study, a collaboration among academic and ...
Response Of Anurans To Wetland Restoration On A Midwestern Agricultural Landscape, 2017 Waldorf University
Response Of Anurans To Wetland Restoration On A Midwestern Agricultural Landscape, Paul E. Bartelt, Robert W. Klaver
Since the early 1990s, >5,000 ha of historic wetlands (and adjacent prairie) have been restored on the row-crop agricultural landscape of Winnebago County, Iowa, USA. From 2008–2011, we surveyed 22 of these sites for probabilities of occupancy and colonization by Boreal Chorus Frogs (BCF; Pseudacris maculata), Northern Leopard Frogs (NLF; Lithobates pipiens), and American Toads (AT; Anaxyrus americanus). We used radio telemetry to measure patterns of movement and habitat use by 22 NLF and 54 AT and deployed biophysical models in available habitats to estimate their physiological costs. The BCF occupied 100% of restored wetlands; NLF and AT ...
Initial Observations Of Plastic-Lined Ponds For Fingerling Walleye Production, 2017 Iowa State University
Initial Observations Of Plastic-Lined Ponds For Fingerling Walleye Production, Matthew L. Rogge, Alan A. Moore, Christopher P. Clouse, Joseph E. Morris
Fish culture ponds are commonly fertilized to increase fish production through enhancement of the plankton forage base. Many fish culture facilities rely on natural production of zooplankton and aquatic insects as food sources for larval fish. Literature on pond fertilization regimes varies; recommendations range from no fertilization to a combination of inorganic and organic fertilizers. More research on the interactions among water quality, nutrients, plankton (phytoplankton and zooplankton) and fertilizers of the appropriate nutrient ratios is needed to move fertilization from an art to a science.
Effects Of Formulated Feed On Water Quality In Fingerling Waleye Production Ponds, 2017 Iowa State University
Effects Of Formulated Feed On Water Quality In Fingerling Waleye Production Ponds, Sarah E. Kaatz, Joseph E. Morris
Six 0.04-ha plastic-lined ponds were used at the Iowa Department of Natural Resources’ Rathbun Fish Culture and Research Facility to evaluate the use of supplemental fish food on walleye (Sander vitreus) fingerling growth and survival, and on the benthic invertebrate community. Walleye were stocked 3-4 days post hatch on 2 May 2003, and harvested 5-6 June 2003. Organic fertilizer (alfalfa pellets, 112kg/ha/week) was used to increase primary production and inorganic fertilizers were added periodically to maintain a target nutrient ratio of 7:1 nitratenitrogen to total phosphorus (NO3-N: TP). Additional nutrients in the form of Lansy CW ...