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Articles 91 - 101 of 101
Full-Text Articles in Life Sciences
To Live And Fly In La: Using Bird Strike And Management Program Information To Improve Safety At Airports In The Los Angeles Basin, Todd J. Pitlik, Elizabeth Hermann, Eric Peralta, Brian E. Washburn
To Live And Fly In La: Using Bird Strike And Management Program Information To Improve Safety At Airports In The Los Angeles Basin, Todd J. Pitlik, Elizabeth Hermann, Eric Peralta, Brian E. Washburn
USDA Wildlife Services: Staff Publications
Wildlife-aircraft collisions (wildlife strikes) pose a serious safety risk to aircraft. Wildlife strikes can be evaluated at different levels, include efforts to examine these problems at the national, regional, or state level, or for an individual airport. Similarly, wildlife strikes involving individual wildlife species or guilds can be examined at varying scales. Although wildlife strike analyses at the national, regional, or species/guild level are valuable, airport-specific analyses are essential for the effective implementation and evaluation of integrated wildlife damage management programs as these actions are conducted at the airport level. The species that present hazards to safe aircraft operations varies …
Effects Of Rearing Environment On Behavior Of Captive-Reared Whooping Cranes, Christy L. Sadowski, Glenn H. Olsen, M. Elsbeth Mcphee
Effects Of Rearing Environment On Behavior Of Captive-Reared Whooping Cranes, Christy L. Sadowski, Glenn H. Olsen, M. Elsbeth Mcphee
Proceedings of the North American Crane Workshop
Whooping cranes (Grus americana) are 1 of the most endangered bird species in North America. In 1999 the Whooping Crane Eastern Partnership was formed to establish a migratory population of whooping cranes in eastern North America. These efforts have been extremely successful in terms of adult survival but reproductive success post-release has been low. One hypothesis developed to explain such low reproductive success is that captive-rearing techniques fail to prepare the birds to be effective parents. Captive-reared whooping cranes at the U.S. Geological Survey, Patuxent Wildlife Research Center, Laurel, Maryland, are either reared by humans in crane costumes …
Mixing Of Two Greater Sandhill Crane Populations In Northeast Oregon, M. Cathy Nowak, Krista J. Mougey, Daniel P. Collins, Blake A. Grisham
Mixing Of Two Greater Sandhill Crane Populations In Northeast Oregon, M. Cathy Nowak, Krista J. Mougey, Daniel P. Collins, Blake A. Grisham
Proceedings of the North American Crane Workshop
The Oregon Department of Fish and Wildlife (ODFW) Ladd Marsh Wildlife Area in northeast Oregon hosts a small group of nesting greater sandhill cranes (Grus canadensis tabida). There were no data on where these birds wintered, and we had no understanding of how these birds fit into the larger picture of western sandhill crane population delineation. ODFW began color-banding pre-fledging colts in 2007 and added satellite tracking with platform transmitter terminals (PTTs) in 2015. To date, we have captured 15 colts and 13 adults and marked them with color bands. We also fitted 1 colt and 8 adult …
Mississippi Sandhill Crane Conservation Update 2014-2016, Scott G. Hereford, Angela J. Dedrickson
Mississippi Sandhill Crane Conservation Update 2014-2016, Scott G. Hereford, Angela J. Dedrickson
Proceedings of the North American Crane Workshop
To manage crane habitat during 2014-2016, 5,826 ha were treated with prescribed burns, 298 ha of woody vegetation were removed, 94 ha of invasive plants were chemically treated, and 8 ha of crops were planted. There were 247 predators removed. We acclimated and released 29 captive-reared juveniles. We began testing drones (unmanned aerial systems [UAS]), to locate nests. We detected an average of 34 nests per year with 6 fledglings each year. The December 2016 population was 129 cranes, up 9% from the previous 3 years.
Chesapeake Bay Nutria Eradication Project: 2017 Update, Margaret Pepper, Kevin Sullivan, Robert Colona, Jonathan Mcknight
Chesapeake Bay Nutria Eradication Project: 2017 Update, Margaret Pepper, Kevin Sullivan, Robert Colona, Jonathan Mcknight
USDA Wildlife Services: Staff Publications
Nutria, a semi-aquatic, South American rodent, was introduced to Maryland during the early 1940s. Originally brought to the area for fur farms, the market never established and animals were released or escaped. Nutria thrived, destroying coastal wetlands which resulted in negative environmental and economic impacts to the Chesapeake Bay region. To preserve and protect valuable wetland resources, the Chesapeake Bay Nutria Eradication Project (CBNEP) was established in 2002 through a partnership between the United States Fish and Wildlife Service, the United States Department of Agriculture’s Wildlife Services, Maryland Department of Natural Resources, and many state agencies and non-governmental organizations. Since …
Estimating Exploitation Rates In The Alabama Red Snapper Fishery Using A High-Reward Tag–Recapture Approach, Dana K. Sackett, Mattgew Catalano, J. Marcus Drymon, Sean P. Powers, Mark Albins
Estimating Exploitation Rates In The Alabama Red Snapper Fishery Using A High-Reward Tag–Recapture Approach, Dana K. Sackett, Mattgew Catalano, J. Marcus Drymon, Sean P. Powers, Mark Albins
University Faculty and Staff Publications
Accurate estimates of exploitation are essential to managing an exploited fishery. However, these estimates are often dependent on the area and vulnerable sizes of fish considered in a study. High-reward tagging studies offer a simple and direct approach to estimating exploitation rates at these various scales and in examining how model parameters impact exploitation rate estimates. These methods can ultimately provide a better understanding of the spatial dynamics of exploitation at smaller local and regional scales within a fishery—a measure often needed for more site-attached species, such as the Red Snapper Lutjanus campechanus. We used this approach to tag 724 …
Gateways-Nd: Advancing Learner-Focused Instruction To Catalyze Stem Student Success, J.M.D. Motschenbacher, R. Reichenbach, M. Hanson, E. A. Berg, J. Ladbury, P. Kelter, L. Montplaisir, J. Nachwaya
Gateways-Nd: Advancing Learner-Focused Instruction To Catalyze Stem Student Success, J.M.D. Motschenbacher, R. Reichenbach, M. Hanson, E. A. Berg, J. Ladbury, P. Kelter, L. Montplaisir, J. Nachwaya
School of Natural Resources: Documents and Reviews
No abstract provided.
Watershed Activity Set, Chesapeake Bay National Estuarine Research Reserve In Virginia
Watershed Activity Set, Chesapeake Bay National Estuarine Research Reserve In Virginia
Reports
Grade level: 2-5
Subject Area: Life Science
This lesson plan contains 3 activities which can be used together or separately. The first activity demonstrates the overall concept of a watershed by having students build a simple model, the second connects watersheds with habitats and pollution - asking students to design their own watershed. The third module examines more closely human activities and their impacts on watersheds using an Enviroscape(TM) model.
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
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
Student Works
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 …
Organic Carbon Sequestration And Storage In Vegetated Coastal Habitats Along The Western Coast Of The Arabian Gulf, M Cusack, V Saderne, A Arias-Ortiz, Pere Masque, P K. Krishnakumar, L Rabaoui, M A. Qusem, P Prihartato, R A. Loughland, A A. Elyas, C M. Duarte
Organic Carbon Sequestration And Storage In Vegetated Coastal Habitats Along The Western Coast Of The Arabian Gulf, M Cusack, V Saderne, A Arias-Ortiz, Pere Masque, P K. Krishnakumar, L Rabaoui, M A. Qusem, P Prihartato, R A. Loughland, A A. Elyas, C M. Duarte
Research outputs 2014 to 2021
Certain coastal ecosystems such as mangrove, saltmarsh and seagrass habitats have been identified as significant natural carbon sinks, through the sequestration and storage of carbon in their biomass and sediments, collectively known as 'blue carbon' ecosystems. These ecosystems can often thrive in extreme environments where terrestrial systems otherwise survive at the limit of their existence, such as in arid and desert regions of the globe. To further our understanding of the capability of blue carbon ecosystems to sequester and store carbon in such extreme climates, we measured carbon sediment stocks in 25 sites along the Western Arabian Gulf coast. While …
Expanding Greenland Seagrass Meadows Contribute New Sediment Carbon Sinks, Núria Marbà, Dorte Krause-Jensen, Pere Masque´, Carlos M. Duarte
Expanding Greenland Seagrass Meadows Contribute New Sediment Carbon Sinks, Núria Marbà, Dorte Krause-Jensen, Pere Masque´, Carlos M. Duarte
Research outputs 2014 to 2021
The loss of natural carbon sinks, such as seagrass meadows, contributes to grenhouse gas emissions and, thus, global warming. Whereas seagrass meadows are declining in temperate and tropical regions, they are expected to expand into the Arctic with future warming. Using paleoreconstruction of carbon burial and sources of organic carbon to shallow coastal sediments of three Greenland seagrass (Zostera marina) meadows of contrasting density and age, we test the hypothesis that Arctic seagrass meadows are expanding along with the associated sediment carbon sinks. We show that sediments accreted before 1900 were highly 13C depleted, indicative of low inputs of seagrass …