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- Institute Publications (20)
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- Biodiversity Protection: Implementation and Reform of the Endangered Species Act (Summer Conference, June 9-12) (1)
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Articles 31 - 43 of 43
Full-Text Articles in Life Sciences
Southern Resident Killer Whales: From Captivity To Conservation, Colleen Weiler, Rob Lott, Erich Hoyt, Deborah Giles, Howard Garrett, Susan Berta, Rein Attemann, Giulia Good-Stefani, Francine Kershaw
Southern Resident Killer Whales: From Captivity To Conservation, Colleen Weiler, Rob Lott, Erich Hoyt, Deborah Giles, Howard Garrett, Susan Berta, Rein Attemann, Giulia Good-Stefani, Francine Kershaw
Salish Sea Ecosystem Conference
The endangered Southern Resident killer whale (Orcinus orca) (SRKW) population remains the only killer whale population listed under the United States Endangered Species Act in U.S. waters since it was listed in 2005. In the 1960s and 70s, the population was reduced by approximately 40% following intensive efforts to capture individuals for a growing marine park captivity industry. The first Northwest killer whale census (1974) found just 70 remaining individuals in the SRKW community. This population has struggled to return to pre-capture numbers, and in the face of new threats including prey depletion, toxic contamination, and vessel effects, fewer than …
The Ecosystem Approach: Recovering Rivers To Help Save The Southern Resident Killer Whales, Colleen Weiler, Deborah Giles, Regina Asmutis-Silvia
The Ecosystem Approach: Recovering Rivers To Help Save The Southern Resident Killer Whales, Colleen Weiler, Deborah Giles, Regina Asmutis-Silvia
Salish Sea Ecosystem Conference
The “ecosystem approach” to managing habitats is of growing interest in the world of conservation biology, with the realization that recovery of protected species ultimately relies on the health of their environment. In the case of the critically endangered Southern Resident Killer Whale (SRKW) population, prey depletion is a major threat to their survival. Research has shown that the SRKWs are highly dependent on Chinook salmon; thus the restoration of Chinook throughout the U.S. and Canada Pacific region is crucial for SRKW recovery. The significant decline of salmon abundance can be attributed to habitat loss and degradation throughout their range. …
Individual Variation In Plant Traits Drives Species Interactions, Ecosystem Functioning, And Responses To Global Change, Quentin Daniel Read
Individual Variation In Plant Traits Drives Species Interactions, Ecosystem Functioning, And Responses To Global Change, Quentin Daniel Read
Doctoral Dissertations
Ecologists have long sought to understand the processes that lead to the riotous diversity in communities of organisms that inhabit disparate climates and landscapes. Such a diversity of traits leads to a diversity of interactions among species in natural communities, which in turn generates a diversity of potential responses to ongoing global change. In this dissertation, I do three things: I explore the forces that structure plant communities and the ecosystem functions that they mediate, I describe patterns of variation among communities, species, and individual organisms across environmental contexts, and I disentangle the direct effects of global change from the …
Research, Monitoring, Assessment And Development Plan 2015 – 2020, Department Of Fisheries
Research, Monitoring, Assessment And Development Plan 2015 – 2020, Department Of Fisheries
Fisheries occasional publications
No abstract provided.
Early Successional Microhabitats Allow The Persistence Of Endangered Plants In Coastal Sand Dunes, Eleanor A. Pardini, Kyle E. Vickstrom, Tiffany M. Knight
Early Successional Microhabitats Allow The Persistence Of Endangered Plants In Coastal Sand Dunes, Eleanor A. Pardini, Kyle E. Vickstrom, Tiffany M. Knight
Biology Faculty Publications & Presentations
Many species are adapted to disturbance and occur within dynamic, mosaic landscapes that contain early and late successional microhabitats. Human modification of disturbance regimes alters the availability of microhabitats and may affect the viability of species in these ecosystems. Because restoring historical disturbance regimes is typically expensive and requires action at large spatial scales, such restoration projects must be justified by linking the persistence of species with successional microhabitats. Coastal sand dune ecosystems worldwide are characterized by their endemic biodiversity and frequent disturbance. Dune-stabilizing invasive plants alter successional dynamics and may threaten species in these ecosystems. We examined the distribution …
A Survey Of Aquatic Invertebrate Communities In Nebraska Sandhill Lakes Reveals Potential Alternative Ecosystem States, J.C. Jolley, E.S. Albin, M.A. Kaemingk, D.W. Willis
A Survey Of Aquatic Invertebrate Communities In Nebraska Sandhill Lakes Reveals Potential Alternative Ecosystem States, J.C. Jolley, E.S. Albin, M.A. Kaemingk, D.W. Willis
Natural Resource Management Faculty Publications
Aquatic invertebrate communities are important to shallow lake ecosystem form and function, providing vital components to the food web and thereby important to achieving lake management goals. We characterized lake invertebrate communities and physicochemical variables in six Nebraska Sandhill lakes and examined these characteristics within an alternative stable state framework. Surveys were conducted during 2005 within each of these lakes by sampling aquatic macroinvertebrate abundance, zooplankton abundance and biomass, phytoplankton biomass, and physicochemical variables. When placed within an alternative stable state framework, the response variables exhibited a gradient of different ecosystem states. Two lakes appeared congruent with the clear water …
Riparian Ecosystem Response To Hemlock Woolly Adelgid (Adelges Tsugae) Induced Eastern Hemlock (Tsuga Canadensis) Mortality In The Great Smoky Mountains National Park, Usa, Misty Dawn Huddleston
Riparian Ecosystem Response To Hemlock Woolly Adelgid (Adelges Tsugae) Induced Eastern Hemlock (Tsuga Canadensis) Mortality In The Great Smoky Mountains National Park, Usa, Misty Dawn Huddleston
Doctoral Dissertations
An invasive insect, hemlock woolly adelgid (HWA), has initiated widespread hemlock decline and mortality in the Great Smoky Mountains National Park (GSMNP). Riparian hemlock mortality impacts on vegetative and aquatic systems of first-order, headwater streams were evaluated. Reference sites for this study were representative of the best available conditions within the GSMNP, with initial stages of HWA presence. Impacted sites were defined as areas with over 90 percent hemlock mortality. Impacted streams had decreased canopy coverage and increased light availability. Residual red maple, yellow birch, and sweet birch capitalized on the loss of hemlock, with increases in relative basal area …
Ecosystem Management Of The Missouri River From Gavins Point Dam To Ponca State Park, Nebraska, Robert S. Nebel
Ecosystem Management Of The Missouri River From Gavins Point Dam To Ponca State Park, Nebraska, Robert S. Nebel
Biology Faculty Publications
•Authorized by a 1978 amendment to the National Parks and Recreation Act (PL 95- 625) which amended the Wild and Scenic Rivers Act of 1968 (PL 90-542)
• Corps is authorized to construct recreational development, bank stabilization, and other recreational river features as necessary to support the values for which the river was designated
• Life-of-project funding ceiling of $21 million; approximately $3.2 million spent to date
• The Corps and National Park Service signed a 1980 Cooperative Agreement outlining each agency's responsibilities
• The General Management Plan has recently been updated (1999) with an environmental emphasis
A Sea Change For Aquatic Sustainability : Meeting The Challenge Of Fish Resources Management And Aquatic Sustainability In The 21st Century, Department Of Fisheries
A Sea Change For Aquatic Sustainability : Meeting The Challenge Of Fish Resources Management And Aquatic Sustainability In The 21st Century, Department Of Fisheries
Fisheries occasional publications
No abstract provided.
The Loss Of Species: Mangrove Extinction Risk And Geographic Areas Of Global Concern, Beth A. Polidoro, Kent E. Carpenter, Lorna Collins, Norman C. Duke, Aaron M. Ellison, Joanna C. Ellison, Elizabeth J. Farnsworth, Edwino S. Fernando, Kandasamy Kathiresan, Nico E. Koedam, Suzanne R. Livingstone, Toyohiko Miyagi, Gregg E. Moore, Vien Ngoc Nam, Jin Eong Ong, Jurgenne H. Primavera, Serverino G. Salmo, Jonnell C. Sanciango, Sukristijono Sukardjo, Yamin Wang, Jean Wan Hong Yong
The Loss Of Species: Mangrove Extinction Risk And Geographic Areas Of Global Concern, Beth A. Polidoro, Kent E. Carpenter, Lorna Collins, Norman C. Duke, Aaron M. Ellison, Joanna C. Ellison, Elizabeth J. Farnsworth, Edwino S. Fernando, Kandasamy Kathiresan, Nico E. Koedam, Suzanne R. Livingstone, Toyohiko Miyagi, Gregg E. Moore, Vien Ngoc Nam, Jin Eong Ong, Jurgenne H. Primavera, Serverino G. Salmo, Jonnell C. Sanciango, Sukristijono Sukardjo, Yamin Wang, Jean Wan Hong Yong
Biological Sciences Faculty Publications
Mangrove species are uniquely adapted to tropical and subtropical coasts, and although relatively low in number of species, mangrove forests provide at least US $1.6 billion each year in ecosystem services and support coastal livelihoods worldwide. Globally, mangrove areas are declining rapidly as they are cleared for coastal development and aquaculture and logged for timber and fuel production. Little is known about the effects of mangrove area loss on individual mangrove species and local or regional populations. To address this gap, species-specific information on global distribution, population status, life history traits, and major threats were compiled for each of the …
A Survery Of Western United States Instream Flow Programs And The Policies That Protect A River's Ecosystem, Kyle Jackson
A Survery Of Western United States Instream Flow Programs And The Policies That Protect A River's Ecosystem, Kyle Jackson
Department of Environmental Studies: Undergraduate Student Theses
The Western United States can best be described as a vast, varying land, with the high plains to the east and the jagged horizons of Rockies to the west. However there is one common trait shared by these states: the lack of water resources. With the continued development of this land, the fact that water is scarce is becoming more real. This issue became more difficult to handle as the public became more aware that many competing uses existed for the finite resource, and those different uses were degrading the natural environments of the surface waters. With this realization instream …
The Kankaee River Basin Partnership, R.A. Schultz, J. Mick
The Kankaee River Basin Partnership, R.A. Schultz, J. Mick
J.R. Black Kankakee River Materials
The presentation will provide a brief history of the Kankakee River Basin and a discussion of its current problems. Infonnation will be provided regarding the outstanding diversity of the area in tenns of its flora and fauna and its natural habitats. The threat to this unique ecosystem presented by sedimentation from various sources both within Illinois and Indiana will be explained. The projects already begun and funded through the Conservation 2000 program in the Kankakee Basin will be described and linked to the Kankakee Basin Stewardship Plan's goals and objectives. Specific attention will be given to the "Stateline Project" which …
A Comparison: Lessons From The Columbia Basin And The Upper Colorado Basin Fish Recovery Efforts, Mary Christina Wood
A Comparison: Lessons From The Columbia Basin And The Upper Colorado Basin Fish Recovery Efforts, Mary Christina Wood
Biodiversity Protection: Implementation and Reform of the Endangered Species Act (Summer Conference, June 9-12)
47 pages.
Contains 5 pages of references.