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Natural Resources and Conservation

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2017

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Articles 211 - 229 of 229

Full-Text Articles in Physical Sciences and Mathematics

Resilience In Ecotoxicology: Toward A Multiple Equilibrium Concept, Mirco Bundschuh, Ralf Schulz, Ralf B. Schäfer, Craig R. Allen, David G. Angeler Jan 2017

Resilience In Ecotoxicology: Toward A Multiple Equilibrium Concept, Mirco Bundschuh, Ralf Schulz, Ralf B. Schäfer, Craig R. Allen, David G. Angeler

School of Natural Resources: Faculty Publications

The term resilience describes stress-response patterns across scientific disciplines. In ecology, advances have been made to clearly define resilience based on underlying mechanistic assumptions. Engineering resilience (rebound) is used to describe the ability of organisms to recover from adverse conditions (disturbances), which is termed the rate of recovery. By contrast, the ecological resilience definition considers a systemic change, that is, when ecosystems reorganize into a new regime following disturbance. Under this new regime, structural and functional aspects change considerably relative to the previous regime, without recovery. In this context, resilience is an emergent property of complex systems. In the present …

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Assessment Of A Channel Catfish Population In A Large Open River System, A. J. Blank, M. J. Hamel, Jonathan J. Spurgeon, Mark A. Pegg Jan 2017

Assessment Of A Channel Catfish Population In A Large Open River System, A. J. Blank, M. J. Hamel, Jonathan J. Spurgeon, Mark A. Pegg

School of Natural Resources: Faculty Publications

Estimates of dynamic rate functions for riverine channel catfish, Ictalurus punctatus (Rafinesque), populations are limited. The open nature and inherent difficulty in sampling riverine environments and the propensity for dispersal of channel catfish impede estimation of population variables. However, contemporary population models (i.e. robust design models) can incorporate the open nature of these systems. The purpose of this study was to determine channel catfish population abundance, survival and size structure and to characterize growth in the lower Platte River, Nebraska, USA. Annual survival estimates of adult channel catfish were 13%–49%, and channel catfish abundance estimates ranged from 8,281 to 24,261 …

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Assessing Responses Of Betula Papyrifera (Paper Birch) To Climate Variability In A Remnant Population Along The Niobrara River In Nebraska Through Dendroecological And Remote Sensing Techniques, Evan Bumann Jan 2017

Assessing Responses Of Betula Papyrifera (Paper Birch) To Climate Variability In A Remnant Population Along The Niobrara River In Nebraska Through Dendroecological And Remote Sensing Techniques, Evan Bumann

School of Natural Resources: Dissertations, Theses, and Student Research

Remnant populations of the boreal species Betula papyrifera, found along north-facing canyons and river banks of the Niobrara River Valley in north-central Nebraska, represent one of the southernmost distributions of the species in North America. Although, the species has persisted in the Great Plains after the Wisconsin Glaciation due to the local topography and microclimatic conditions, canopy dieback has been reported in recent years, which is believed to be attributed to temperature change. Therefore, the goals of this research are to: 1) use dendroecological techniques, or the study of tree rings to assess the responses B. papyrifera to intra- and …

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Wonderful Wetlands: Why Do We Need Them And What Can They Do For Us? Subjects: Environmental Science, Marine/Ocean Science, Life Science/Biology Grades: 9-12, Amanda Knobloch Jan 2017

Wonderful Wetlands: Why Do We Need Them And What Can They Do For Us? Subjects: Environmental Science, Marine/Ocean Science, Life Science/Biology Grades: 9-12, Amanda Knobloch

Reports

This lesson plan introduces students to a variety of different types of wetlands and how they function in the coastal environment. Students will work through activities that illustrate the economic importance of wetlands and the services wetlands provide, as well as building conceptual models of wetlands to illustrate these points.

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Managing For Wildlife Habitat On Rangelands In The Great Plains, Maggi Sliwinski, Mark E. Burbach, Larkin Powell, Walter H. Schacht Jan 2017

Managing For Wildlife Habitat On Rangelands In The Great Plains, Maggi Sliwinski, Mark E. Burbach, Larkin Powell, Walter H. Schacht

School of Natural Resources: Documents and Reviews

No abstract provided.

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Great Plains Geology: A Personal Journey, Robert F. Diffendal Jr. Jan 2017

Great Plains Geology: A Personal Journey, Robert F. Diffendal Jr.

School of Natural Resources: Faculty Publications

From graduate school in 1962 to now, I achieved my goals and became a geologist and professor, travelling and doing research in the Great Plains and western Central Lowland physiographic provinces, and looking at geology in exotic places like the UK, China, Australia and New Zealand. Fast forward to 2013. I had enough experience and expertise on Great Plains geology by then that I was asked to write a short book of about 35,000 words on the geology of the Great Plains by the director of the Center for Great Plains Studies at the University of Nebraska, Dr. Richard Edwards. …

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The Conservation Status Of Marine Biodiversity Of The Pacific Islands Of Oceania, H. Pippard, G. M. Ralph, M. S. Harvey, K. E. Carpenter, J. R. Buchanan, D. W. Greenfield, H. D. Harwell, H. K. Larson, A. Lawrence, C. Linardich, K. Matsuura, H. Motomura, T. A. Munroe, R. F. Myers, B. C. Russell, W. F. Smith-Vaniz, J. C. Vié, R. R. Thaman, J. T. Williams Jan 2017

The Conservation Status Of Marine Biodiversity Of The Pacific Islands Of Oceania, H. Pippard, G. M. Ralph, M. S. Harvey, K. E. Carpenter, J. R. Buchanan, D. W. Greenfield, H. D. Harwell, H. K. Larson, A. Lawrence, C. Linardich, K. Matsuura, H. Motomura, T. A. Munroe, R. F. Myers, B. C. Russell, W. F. Smith-Vaniz, J. C. Vié, R. R. Thaman, J. T. Williams

Biological Sciences Faculty Publications

The Pacific Islands of Oceania are small islands and atolls occurring over a vast expanse of ocean that are characterized by immense biodiversity and endemism. This project represents a major expansion of the coverage of the Pacific Islands’ marine biodiversity on the IUCN Red List of Threatened Species. The threats to Pacific Island marine biodiversity are many. Results from IUCN Red List initiatives such as this can guide decision-making and conservation prioritization of Pacific Island governments, non-governmental organizations (NGOs) and the private sector. By shaping regional and national policies with these data in mind, priority sites for maintaining marine biodiversity …

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Marine Stewardship Council Full Assessment Report Western Australian Abalone Managed Fishery, Anthony M. Hart, Lachlan W.S. Strain, Alexander Hesp, E. Fisher, F J. Webster, S. J. Brand-Gardner, S. Walters Jan 2017

Marine Stewardship Council Full Assessment Report Western Australian Abalone Managed Fishery, Anthony M. Hart, Lachlan W.S. Strain, Alexander Hesp, E. Fisher, F J. Webster, S. J. Brand-Gardner, S. Walters

WA Marine Stewardship Council report series

This report provides a comprehensive description of the Abalone Managed Fishery (AMF) in Western Australia (WA) and contains information relevant to assist with the assessment of this fishery against the Marine Stewardship Council (MSC) standard (v2.0) for sustainable fishing. Fishers in the AMF harvest three species; Roe’s abalone (Haliotis roei), Greenlip abalone (H. laevigata) and Brownlip abalone (H. conicopora), through hand collection by diving in shallow waters off the south-western and southern coasts of WA.

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Capturing Change: The Duality Of Time-Lapse Imagery To Acquire Data And Depict Ecological Dynamics, Emma Brinley Buckley, Craig R. Allen, Michael L. Forsberg, Michael Farrell, Andrew J. Caven Jan 2017

Capturing Change: The Duality Of Time-Lapse Imagery To Acquire Data And Depict Ecological Dynamics, Emma Brinley Buckley, Craig R. Allen, Michael L. Forsberg, Michael Farrell, Andrew J. Caven

Nebraska Cooperative Fish and Wildlife Research Unit: Staff Publications

We investigate the scientific and communicative value of time-lapse imagery by exploring applications for data collection and visualization. Time-lapse imagery has a myriad of possible applications to study and depict ecosystems and can operate at unique temporal and spatial scales to bridge the gap between large-scale satellite imagery projects and observational field research. Time-lapse data sequences, linking time-lapse imagery with data visualization, have the ability to make data come alive for a wider audience by connecting abstract numbers to images that root data in time and place. Utilizing imagery from the Platte Basin Timelapse Project, water inundation and vegetation phenology …

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The Conservation Status Of Marine Bony Shorefishes Of The Greater Caribbean, Kent E. Carptenter, Christi Linardich, Gina Ralph, N. Cox, D. R. Robertson, H. Harwell, A. Acero P., W. Anderson Jr., F. Barthelat, J. -L. Bouchereau, J. J. Brown, J. Buchanan, D. Buddo, B. Collette, M. Comeros-Raynal, M. Craig, M. Curtis, T. Defex, J. Dooley, W. Driggers Iii, C. Elfes Livsey, T. Fraser, R. Gilmore Jr., L. Grijalba Bendeck, A. Hines, R. Kishore, K. Lindeman, J. -P. Maréchal, J. Mceachran, R. Mcmanus, J. Moore, T. Munroe, H. Oxenford, F. Pezold, F. Pina Amargós, A. Polanco Fernandez, B. Polidoro, C. Pollock, R. Robins, B. Russell, C. Sayer, S. Williams Jan 2017

The Conservation Status Of Marine Bony Shorefishes Of The Greater Caribbean, Kent E. Carptenter, Christi Linardich, Gina Ralph, N. Cox, D. R. Robertson, H. Harwell, A. Acero P., W. Anderson Jr., F. Barthelat, J. -L. Bouchereau, J. J. Brown, J. Buchanan, D. Buddo, B. Collette, M. Comeros-Raynal, M. Craig, M. Curtis, T. Defex, J. Dooley, W. Driggers Iii, C. Elfes Livsey, T. Fraser, R. Gilmore Jr., L. Grijalba Bendeck, A. Hines, R. Kishore, K. Lindeman, J. -P. Maréchal, J. Mceachran, R. Mcmanus, J. Moore, T. Munroe, H. Oxenford, F. Pezold, F. Pina Amargós, A. Polanco Fernandez, B. Polidoro, C. Pollock, R. Robins, B. Russell, C. Sayer, S. Williams

Biological Sciences Faculty Publications

The greater Caribbean biogeographic region covered in this report (representing 38 countries and territories) encompasses an outstanding marine bony shorefish richness of approximately 1,360 species, with many (53%) being endemic. This report provides an overview of the conservation status of greater Caribbean shorefishes, with detailed information available through the IUCN Red List, and gives recommendations.

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Mesonets: Meso-Scale Weather And Climate Observations For The U.S., Rezaul Mahmood Jan 2017

Mesonets: Meso-Scale Weather And Climate Observations For The U.S., Rezaul Mahmood

School of Natural Resources: Faculty Publications

No abstract provided.

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Information Technology Approaches To Forest Management, Mary Snow, Richard Snow Jan 2017

Information Technology Approaches To Forest Management, Mary Snow, Richard Snow

Publications

The majority of the world’s forests occur where there is a dry season long enough to affect a seasonal change in the forest community. The seasonal forest may include evergreen, semi-deciduous, deciduous trees, or some combination of these. Local differences in soil or other site characteristics often determine which community persists. Since the seasonal forests exist where there is seasonal precipitation, the character of the forest is closely associated with the length of the rainy season. As the length of the rainy season decreases, the density of the canopy decreases. If the global climate system warms and prolonged drought gives …

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Eco Friendly: Ecology Meets Economy, Neal Shannon Jan 2017

Eco Friendly: Ecology Meets Economy, Neal Shannon

A with Honors Projects

Sustainability is a word that gets used a lot, but it’s important to properly define how we are using it. In general, sustainability is the ability to continue an activity indefinitely. Environmental sustainability is defined as using environmental sciences to manage the rates of renewable resource harvest vs consumption; limit pollution creation vs natural sink potential; and slow non-renewable resource depletion; in a way that our behaviors can be continued indefinitely (Harich). An environmentally sustainable society would prioritize processing waste efficiently and promoting the regeneration of resources, just as a business would prioritize efficient use of equipment to lower costs …

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Assessment Of Critical Habitats For Recovering The Chesapeake Bay Atlantic Sturgeon Distinct Population Segment, Bob Greenlee, David H. Secor, Greg C. Garman, Matthew Balazak, Eric J. Hilton, Matthew T. Fisher Jan 2017

Assessment Of Critical Habitats For Recovering The Chesapeake Bay Atlantic Sturgeon Distinct Population Segment, Bob Greenlee, David H. Secor, Greg C. Garman, Matthew Balazak, Eric J. Hilton, Matthew T. Fisher

Reports

The states of Virginia and Maryland along with Virginia Commonwealth University (VCU), Virginia Institute of Marine Science (VIMS) and University of Maryland Center for Environmental Science (UMCES) partnered to assess critical habitat for recovering the Chesapeake Bay Atlantic sturgeon (Acipenser oxyrinchus oxyrinchus) distinct population segment. The primary objectives were to assess reproductive habitat in the James River, nursery habitat in the James and York Rivers and the degree of dependence of those populations to habitat in the Chesapeake Bay.

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Droughts Of The Twentieth And Early Twenty First Centuries: Influences On The Production Of Beef And Forage In Kentucky, Usa, Rezaul Mahmood Jan 2017

Droughts Of The Twentieth And Early Twenty First Centuries: Influences On The Production Of Beef And Forage In Kentucky, Usa, Rezaul Mahmood

School of Natural Resources: Faculty Publications

No abstract provided.

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Understanding Community Character As A Socio-Ecological Framework To Enhance Local-Scale Adaptation: An Interdisciplinary Case Study From Rural Northwest Connecticut, Joanna Wozniak-Brown Jan 2017

Understanding Community Character As A Socio-Ecological Framework To Enhance Local-Scale Adaptation: An Interdisciplinary Case Study From Rural Northwest Connecticut, Joanna Wozniak-Brown

Antioch University Dissertations & Theses

Around the world, municipalities are facing new challenges, not the least of which is climate change. This is especially true for rural communities that, for a variety of reasons, will be disproportionately affected by the climatic changes and accompanying policies or programs.

This dissertation, written in manuscript-style, integrates climate change and social-ecological scholarship to address the unique character of rural communities, to communicate the complexity of rural identity through the term "rural character"; and to empower rural communities to incorporate adaptation strategies into their daily municipal operations and planning.

Specifically, this dissertation seeks to answer the following questions: What is …

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Landscape Features Affecting Northern Bobwhite Predator-Specific Nest Failures In Southeastern Usa, Susan Ellis-Felege, Shannon E. Albeke, Nathan P. Nibbelink, Michael J. Conroy, D. Clay Sisson, William E. Palmer, John P. Carroll Jan 2017

Landscape Features Affecting Northern Bobwhite Predator-Specific Nest Failures In Southeastern Usa, Susan Ellis-Felege, Shannon E. Albeke, Nathan P. Nibbelink, Michael J. Conroy, D. Clay Sisson, William E. Palmer, John P. Carroll

School of Natural Resources: Faculty Publications

Nest predation is a critical component in avian productivity and typically is the leading cause of nest failure for most birds. Several landscape features are thought to drive the behavioral interaction between northern bobwhite (Colinus virginianus; e.g., nest placement) and their predators (e.g., search methods for food acquisition). In order to understand habitat characteristics influencing predation, we studied bobwhite nests using 24-hour near-infrared video cameras. We monitored 675 bobwhite nests with cameras on 3 properties in northern Florida and southern Georgia, USA, during 2000–2006. To test the association between nest failures and specific failure causes with landscape structure, we calculated …

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Recent Land Cover Changes And Sensitivity Of The Model Simulations To Various Land Cover Datasets For China, Rezaul Mahmood Jan 2017

Recent Land Cover Changes And Sensitivity Of The Model Simulations To Various Land Cover Datasets For China, Rezaul Mahmood

School of Natural Resources: Faculty Publications

No abstract provided.

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Spatially Biased Dispersal Of Acorns By A Scatter-Hoarding Corvid May Accelerate Passive Restoration Of Oak Habitat On California’S Largest Island, Mario B. Pesendorfer, T. Scott Sillett, Scott A. Morrison Jan 2017

Spatially Biased Dispersal Of Acorns By A Scatter-Hoarding Corvid May Accelerate Passive Restoration Of Oak Habitat On California’S Largest Island, Mario B. Pesendorfer, T. Scott Sillett, Scott A. Morrison

School of Biological Sciences: Faculty Publications

Scatter hoarding by corvids (crows, jays, magpies, and nutcrackers) provides seed dispersal for many large-seeded plants, including oaks and pines. When hoarding seeds, corvids often choose nonrandom locations throughout the landscape, resulting in differential survival of seeds. In the context of habitat restoration, such disproportional storing of seeds in areas suitable for germination and establishment can accelerate expansion and recovery of large-seeded tree populations and their associated ecosystems. Here, we investigate the spatial preferences of island scrub jays Aphelocoma insularis during scatter hoarding of acorns (Quercus spp.) on Santa Cruz Island. We use a large behavioral data set on …

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