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Articles 1 - 30 of 105
Full-Text Articles in Physical Sciences and Mathematics
Reimagining Large River Management Using The Resist–Accept–Direct (Rad) Framework In The Upper Mississippi River, Nicole K. Ward, Abigail J. Lynch, Erik A. Beever, Joshua Booker, Kristen L. Bouska, Holly Embke, Jeffrey N. Houser, John F. Kocik, Joshua Kocik, David J. Lawrence, Mary Grace Lemon, Doug Limpinsel, Madeline R. Magee, Bryan M. Maitland, Owen Mckenna, Andrew Meier, John M. Morton, Jeffrey D. Muehlbauer, Robert Newman, Devon C. Oliver, Heidi M. Rantala, Greg G. Sass, Aaron Shultz, Laura M. Thompson, Jennifer L. Wilkening
Reimagining Large River Management Using The Resist–Accept–Direct (Rad) Framework In The Upper Mississippi River, Nicole K. Ward, Abigail J. Lynch, Erik A. Beever, Joshua Booker, Kristen L. Bouska, Holly Embke, Jeffrey N. Houser, John F. Kocik, Joshua Kocik, David J. Lawrence, Mary Grace Lemon, Doug Limpinsel, Madeline R. Magee, Bryan M. Maitland, Owen Mckenna, Andrew Meier, John M. Morton, Jeffrey D. Muehlbauer, Robert Newman, Devon C. Oliver, Heidi M. Rantala, Greg G. Sass, Aaron Shultz, Laura M. Thompson, Jennifer L. Wilkening
School of Natural Resources: Faculty Publications
Background: Large-river decision-makers are charged with maintaining diverse ecosystem services through unprecedented social-ecological transformations as climate change and other global stressors intensify. The interconnected, dendritic habitats of rivers, which often demarcate jurisdictional boundaries, generate complex management challenges. Here, we explore how the Resist–Accept–Direct (RAD) framework may enhance large-river management by promoting coordinated and deliberate responses to social-ecological trajectories of change. The RAD framework identifies the full decision space of potential management approaches, wherein managers may resist change to maintain historical conditions, accept change toward different conditions, or direct change to a specified future with novel conditions. In the Upper Mississippi …
A Closer Look At The Security Risks In The Rust Ecosystem, Xiaoye Zheng, Zhiyuan Wan, Yun Zhang, Rui Chang, David Lo
A Closer Look At The Security Risks In The Rust Ecosystem, Xiaoye Zheng, Zhiyuan Wan, Yun Zhang, Rui Chang, David Lo
Research Collection School Of Computing and Information Systems
Rust is an emerging programming language designed for the development of systems software. To facilitate the reuse of Rust code, crates.io, as a central package registry of the Rust ecosystem, hosts thousands of third-party Rust packages. The openness of crates.io enables the growth of the Rust ecosystem but comes with security risks by severe security advisories. Although Rust guarantees a software program to be safe via programming language features and strict compile-time checking, the unsafe keyword in Rust allows developers to bypass compiler safety checks for certain regions of code. Prior studies empirically investigate the memory safety and concurrency bugs …
Riding The Decarbonisation Wave: Bhp And Its Lng Dual-Fuelled Vessels, Shantanu Bhattacharya, Flocy Joseph, Mahima Rao-Kachroo
Riding The Decarbonisation Wave: Bhp And Its Lng Dual-Fuelled Vessels, Shantanu Bhattacharya, Flocy Joseph, Mahima Rao-Kachroo
Asian Management Insights
What does it take to decarbonise charter-related shipping?
Engineering A Microbiosphere To Clean Up The Ocean – Inspiration From The Plastisphere, Khulood A. Alnahdi, Laila W. Alali, Mezna K. Suwaidan, M. Kalim Akhtar
Engineering A Microbiosphere To Clean Up The Ocean – Inspiration From The Plastisphere, Khulood A. Alnahdi, Laila W. Alali, Mezna K. Suwaidan, M. Kalim Akhtar
All Works
Plastic is a ubiquitous material that has become an essential part of our lives. More than one hundred million tons of plastic has accumulated in the world’s oceans as a result of poor waste management. This plastic waste gradually fragments into smaller pieces known as microplastics and nanoplastics. These small plastic particles can cause significant damage to marine ecosystems, and negatively impact human health. According to a recent review of international patents, the majority of ocean-cleaning inventions are limited to microplastics larger than 20 μm. Furthermore, such technologies are ineffective for nanoplastics, which measure less than 1000 nm, or even …
High Sensitivity Of The Tiger Beetle, Cicindela Circumpicta, To Toxicity From Pyrethroids And Neonicotinoids, And Implications For Ecosystem Function And Species Extinctions, S. Svehla, T. Brosius, Leon Higley, T. Hunt
High Sensitivity Of The Tiger Beetle, Cicindela Circumpicta, To Toxicity From Pyrethroids And Neonicotinoids, And Implications For Ecosystem Function And Species Extinctions, S. Svehla, T. Brosius, Leon Higley, T. Hunt
School of Natural Resources: Faculty Publications
No abstract provided.
Reconstructing The Ecological Relationships Of Late Cretaceous Antarctic Dinosaurs And How Functional Tooth Morphology Influenced These Relationships, Ian D. Broxson
2022 Symposium
The Sandwich Bluff Formation of the James Ross Basin of Antarctica has recently yielded a group of five late Cretaceous dinosaurs that lived contemporaneously with each other, a first for Antarctica. These five dinosaurs include fragmentary remains of two differently sized elasmarian ornithopods, a possible megaraptor, a hadrosaur, and a nodosaur. In this study we will construct a model of the ecological relationships of late Cretaceous Antarctica. Additionally, we will look at what specific factors allowed this group of four herbivores and a carnivore to coexist in a restricted locality and what niches were filled by each species. Methods to …
Ecosystem Service Trade-Offs In Coral Reefs: A Global Analysis, Megan E. Keene
Ecosystem Service Trade-Offs In Coral Reefs: A Global Analysis, Megan E. Keene
Student Publications
Coral reefs are biodiversity hotspots that provide humans with extractive ecosystem services like fisheries and non-extractive services like tourism. Though no studies have examined these trade-offs among these services at a global scale, there are now large, open datasets that make this possible. Using these datasets, we asked whether spatial protection and the level of protection (World Database on Protected Areas) impacted coral reef tourism value (Atlas of Ocean Wealth). We also examined whether proximity to regions of high fishing effort, defined as the top 25th percentile of the average annual effort from Global Fishing Watch, impacted tourism values. Since …
Future Of Winter In Northeastern North America: Climate Indicators Portray Warming And Snow Loss That Will Impact Ecosystems And Communities, Elizabeth Burakowski, Alix Contosta, Danielle Grogan, Sarah Nelson, Sarah Garlick, Nora Casson
Future Of Winter In Northeastern North America: Climate Indicators Portray Warming And Snow Loss That Will Impact Ecosystems And Communities, Elizabeth Burakowski, Alix Contosta, Danielle Grogan, Sarah Nelson, Sarah Garlick, Nora Casson
Faculty Publications
Winters in northeastern North America have warmed faster than summers, with impacts on ecosystems and society. Global climate models (GCMs) indicate that winters will continue to warm and lose snow in the future, but uncertainty remains regarding the magnitude of warming. Here, we project future trends in winter indicators under lower and higher climate-warming scenarios based on emission levels across northeastern North America at a fine spatial scale (1/16°) relevant to climate-related decision making. Under both climate scenarios, winters continue to warm with coincident increases in days above freezing, decreases in days with snow cover, and fewer nights below freezing. …
Invasives In Our National Parks: How Tourists Can Help Stop The Spread Of Invasive Species, Alexandria Elivira Marci
Invasives In Our National Parks: How Tourists Can Help Stop The Spread Of Invasive Species, Alexandria Elivira Marci
Masters Theses
Invasive species are a major issue around the world and more specifically in our U.S. National Parks. Ranging from plants to insects to animals, invasive species are a greater threat than many may imagine. The impact that invasive species have on an ecosystem encompasses more than taking over a native species’ environment; it includes competing for food, water, and other resources, as well as having an adverse effect on our economy and threatening us with deadly diseases. Many factors lead to the cause of spread of invasive species, but all point back to human interference, from purposely spreading invasive species …
Vignette 16: Vulnerability And Climate Change Adaptation, Northwest Indian Fisheries Commission, Jamestown S'Klallam Tribe
Vignette 16: Vulnerability And Climate Change Adaptation, Northwest Indian Fisheries Commission, Jamestown S'Klallam Tribe
Institute Publications
The 2013 Jamestown Climate Vulnerability Assessment and Adaptation Plan provides an assessment of vulnerabilities of tribal resources to the negative impacts of climate change. The plan also identifies adaptation measures that the tribe is working to complete. Sea level rise, ocean acidification and climate models show potential for increased risks to critical habitats, tribal infrastructure and tribal health. As one of the first tribes in western Washington to complete a climate adaptation plan and vulnerability assessment, the Jamestown S’Klallam Tribe has identified and prioritized areas where changing climate conditions will leave tribal resources, infrastructure, economy and health most vulnerable, Climate …
Vignette 01: The Salish Sea Estuary System, Bert Webber
Vignette 01: The Salish Sea Estuary System, Bert Webber
Institute Publications
The Salish Sea is an estuarine ecosystem. Freshwater from land drainages mixes with the waters of the Pacific Ocean and results in water with a measurable, although sometimes small amount of freshwater. The Salish Sea is among the preeminent estuaries of North America. Estuarine circulation and flow are central to the high biological productivity in the Salish Sea.
Section 5: Cumulative Ecosystem Effects, Kathryn L. Sobocinski, Jennifer Boldt, Todd Sandell, Jaclyn Cleary, Michael Schmidt, Isobel Pearsall, Iris Kemp, Brian Riddell, Lynda V. Mapes
Section 5: Cumulative Ecosystem Effects, Kathryn L. Sobocinski, Jennifer Boldt, Todd Sandell, Jaclyn Cleary, Michael Schmidt, Isobel Pearsall, Iris Kemp, Brian Riddell, Lynda V. Mapes
Institute Publications
Section 5 introduces cumulative effects and brings in brief case discussions focused on herring, salmon, and orcas. Understanding the layers of stressors the ecosystem faces is integral to gaining a full picture of declines in ecosystem function.
Vignette 17: Salish Sea Jellyfish, Correigh Greene
Vignette 17: Salish Sea Jellyfish, Correigh Greene
Institute Publications
The Salish Sea is home to a diverse community of gelatinous zooplankton (or "jellies"). In their adult forms, jellies comprise a relatively large proportion of biomass in the Salish Sea. Questions regarding jellyfish abundance and climate variation in the Salish Sea have been difficult to address, in part because of a lack of consistent monitoring. Research presented in this vignette suggests that jellyfish are sensitive to climate signals like marine water temperatures, but do not appear to be systematically increasing in abundance over time. Due to advances in modeling, we may gain a better perspective on the roles jellies play …
Vignette 21: How Ecological Time-Series Inform Response To Stressors, Jackson W.F. Chu
Vignette 21: How Ecological Time-Series Inform Response To Stressors, Jackson W.F. Chu
Institute Publications
An important part of biodiversity monitoring includes assessing the differences in vulnerability across parts of an ecosystem. Hypoxia is one of the big three climate- related stressors causing biodiversity loss in the oceans. As the ocean warms, its capacity to hold oxygen becomes reduced. At the same time, concurrent shifts in circulation result in changes to how oxygen gets transported from the surface (where oxygen dissolves into the ocean) to the seafloor and from offshore to inshore areas. When a habitat experiences a substantial drop in oxygen, below the point needed to sustain everyday life, animals respond by migrating away, …
Vignette 08: Connection To Place: Indigenous Leadership In Səlilwət (Burrard Inlet), Tsleil-Waututh Nation’S Treaty Lands And Resources Department
Vignette 08: Connection To Place: Indigenous Leadership In Səlilwət (Burrard Inlet), Tsleil-Waututh Nation’S Treaty Lands And Resources Department
Institute Publications
Since time out of mind, Tsleil-Waututh have used and occupied Burrard Inlet and surrounding watersheds. Generations of Tsleil-Waututh people were brought up with the teaching, “When the tide went out, the table was set.” About 90% of our diet was once derived from Burrard Inlet and the Fraser River, but today the Inlet is unable to support our needs. Cumulative effects of colonial settlement and development have eroded the ecological health, integrity, and diversity of the Inlet. Tsleil-Waututh Nation (TWN) has a goal to restore the health of the Inlet so that we, and future generations of Tsleil-Waututh People, can …
Vignette 04: Olympia Oysters, Jodie Toft, Betsy Peabody
Vignette 04: Olympia Oysters, Jodie Toft, Betsy Peabody
Institute Publications
Olympia oysters (Ostrea lurida) are our only native oyster species here in the Salish Sea. Olympia oysters once covered an estimated 13-26% of the intertidal area in Puget Sound, mostly near the heads of inlets. A combination of overharvest, pollution, and habitat loss reduced the current population to less than 4% of historic numbers, though sparse numbers of Olympia oysters can still be found throughout most of their historic distribution. Looking to the future, as our region’s marine waters experience effects of climate change and ocean acidification (OA), native species such as the Olympia oyster may prove to …
Vignette 14: Eelgrass Wasting Disease, Olivia Graham, Morgan Eisenlord, Drew Harvell
Vignette 14: Eelgrass Wasting Disease, Olivia Graham, Morgan Eisenlord, Drew Harvell
Institute Publications
Rising seawater temperatures can increase the risk of disease outbreaks in many taxa. Pathogens are potentially the ultimate keystone species in that their small biomass can have massive impacts that ripple through ecosystems. Disease outbreaks can be particularly damaging when they affect ecosystem engineers, such as seagrasses. Outbreaks of wasting disease in seagrasses are one of a myriad of stressors associated with declining temperate and tropical seagrass meadows around the globe. Levels of eelgrass wasting disease are high in the San Juan Islands and Puget Sound. These increasing levels of disease are a threat to sustainability of eelgrass meadows, our …
Vignette 13: The Salish Sea Model, Tarang Khangaonkar P.E.
Vignette 13: The Salish Sea Model, Tarang Khangaonkar P.E.
Institute Publications
Given numerous concerns related to the health of the ecosystem and the possibility of anthropogenic impacts—from population growth to climate impacts, such as sea level rise—scientists, engineers, and planners seek an improved basic understanding of the biophysical behavior of the Salish Sea. The Salish Sea Model (SSM) development was motivated by this urgent need for a comprehensive predictive model that could diagnose water quality issues and concerns and serve as a planning tool in support of Puget Sound restoration efforts. The SSM was developed by the Pacific Northwest National Laboratory in collaboration with the Washington State Department of Ecology (Ecology) …
Vignette 15: Eelgrass Variations Ties To Sea Level Variations, Ronald Thom
Vignette 15: Eelgrass Variations Ties To Sea Level Variations, Ronald Thom
Institute Publications
This vignette shares an overview of the process and results of a long-term eelgrass monitoring effort at the mouth of Sequim Bay. Coupling these local long-term findings with research and monitoring across the Salish Sea and the globe will help better understand the longer-term effects of global warming and perhaps other human and natural-derived pressures on coastal ecosystems, and provide clues on how to make these systems more resilient to pressures.
Section 7: The Future Of The Salish Sea? A Call To Action, Ginny Broadhurst, Natalie Baloy, Kathryn L. Sobocinski
Section 7: The Future Of The Salish Sea? A Call To Action, Ginny Broadhurst, Natalie Baloy, Kathryn L. Sobocinski
Institute Publications
Section 7 provides perspective from the Salish Sea Institute, acknowledging that science alone will not resolve continuing problems or emerging issues. Stronger policies along with education, leadership, and collaboration are needed.
Section 2: Context, Kathryn L. Sobocinski
Section 2: Context, Kathryn L. Sobocinski
Institute Publications
Section 2 sets a foundation for understanding the Salish Sea ecosystem by describing its fundamental biophysical processes and structure, including estuarine circulation, ecological productivity, and an overview of several important biogenic habitats.
Section 3: Urbanization And Human Impacts To The Seascape, Kathryn L. Sobocinski
Section 3: Urbanization And Human Impacts To The Seascape, Kathryn L. Sobocinski
Institute Publications
Section 3 turns to an in-depth discussion of stressors and impacts to the ecosystem from population growth and urbanization, such as increases in impervious surfaces, hardening of shorelines, and the problems caused by a myriad of marine contaminants.
Section 4: Climate Change: A Global Problem With Local Impacts, Kathryn L. Sobocinski
Section 4: Climate Change: A Global Problem With Local Impacts, Kathryn L. Sobocinski
Institute Publications
Section 4 shifts from the local impacts of urbanization to the locally realized impacts of global climate change, including ocean acidification and sea level rise, followed by evidence of climate change in the ecosystem, ranging from phytoplankton and kelp, to wetlands, salmon, and marine birds.
Section 6: Opportunities For Improving Assessment And Understanding Of The Salish Sea, Kathryn L. Sobocinski
Section 6: Opportunities For Improving Assessment And Understanding Of The Salish Sea, Kathryn L. Sobocinski
Institute Publications
Section 6 offers a list of science-based needs and opportunities brought to light by the report and various existing efforts within the Salish Sea science community, representing opportunities for greater collaboration across geographic and jurisdictional boundaries.
Vignette 06: Living Shorelines In Puget Sound, Jason Toft
Vignette 06: Living Shorelines In Puget Sound, Jason Toft
Institute Publications
Nearly one third of Puget Sound’s shorelines are armored (e.g., seawall, bulkhead, riprap). Armoring has documented negative impacts on the flora and fauna that benefit from healthy intertidal beaches. Although shoreline armor may be necessary in some cases to protect people and property, there are often promising “living shoreline” options to restore natural features, also referred to as soft or green shorelines. These options can be applied to situations where complete restoration is either impractical or not feasible given human constraints. Living shoreline techniques often include a mix of design options, including armor removal, sediment nourishment of beaches, log placement, …
Vignette 09: Derelict Fishing Gear, Jason Morgan
Vignette 09: Derelict Fishing Gear, Jason Morgan
Institute Publications
Derelict fishing gear—nets, pots, and other gear lost during fishing operations or vessel transit—has been implicated in several aspects of degradation in the Salish Sea. Derelict gear can degrade marine habitats by scouring or preventing habitat access through accumulation of gear or by fundamentally altering habitats by trapping fine sediments and changing the substrate. Derelict gear has also been implicated in the deaths of countless fish, marine mammals, seabirds, and invertebrates in the Salish Sea. The issue of derelict fishing gear affects all reaches of the Salish Sea, albeit on different scales, and the Northwest Straits Initiative has provided its …
Vignette 18: Bellingham Bay, Legacy Contamination Under Repair, Olivia Klein
Vignette 18: Bellingham Bay, Legacy Contamination Under Repair, Olivia Klein
Institute Publications
Bellingham Bay, home to twelve designated hazardous waste cleanup sites, illustrates the harm of past practices as well as the effectiveness of cleanup efforts. Since 2000, the Bellingham Bay cleanup has focused on the removal of contaminated sediment and soils introduced from a wide variety of sources, including construction and other industrial and municipal activities. Bellingham Bay cleanup is managed by the Washington State Department of Ecology (under the authority of Washington State’s Model Toxic Control Act) in coordination with a multi- agency Bellingham Bay Action Team.
Vignette 19: Invasive European Green Crab, Jeff Adams, Emily Grason, P. Sean Mcdonald, Allen Pleus, Jude Apple, Roger Fuller, Lucas Hart, Alexandra Simpson
Vignette 19: Invasive European Green Crab, Jeff Adams, Emily Grason, P. Sean Mcdonald, Allen Pleus, Jude Apple, Roger Fuller, Lucas Hart, Alexandra Simpson
Institute Publications
European green crab pose documented threats to cultured and wild shellfish, eelgrass, and shoreline habitats and ecosystems. Because they can prey on juvenile crabs and shellfish, dense populations of EGC in the Salish Sea region could put fisheries and aquaculture resources in peril. After Fisheries and Oceans Canada researchers reported an established EGC population in Sooke Basin, BC in 2012, the Washington Department of Fish and Wildlife (WDFW) worked with Washington Sea Grant (WSG) to secure Puget Sound Marine and Nearshore Grant Program funding and establish a volunteer-based early detection and monitoring program. WSG launched Crab Team in 2015 with …
Vignette 22: Sense Of Place, David J. Trimbach
Vignette 22: Sense Of Place, David J. Trimbach
Institute Publications
Sense of place refers to peoples’ bonds and meanings associated with place. Sense of place tends to include: place attachment (bond or connection to place); place dependence (reliance on place for need or goal achievement); place identity (identification with place); and place meaning (descriptions or imagery that define a place). Sense of place is subjective, yet patterned, providing researchers with the ability to assess shared connections, understandings, meanings, and the potential to predict behaviors or perceptions. Sense of place is recognized as integral to ecosystem health and recovery. Sense of place can be understood, if not harnessed to address ecosystem …
Potential Ecological Impacts Of Climate Intervention By Reflecting Sunlight To Cool Earth, Phoebe L. Zarnetske, Jessica Gurevitch, Janet Franklin, Peter M. Groffman, Cheryl S. Harrison, Jessica J. Hellmann, Forrest M. Hoffman, Shan Kothari, Alan Robock, Simone Tilmes
Potential Ecological Impacts Of Climate Intervention By Reflecting Sunlight To Cool Earth, Phoebe L. Zarnetske, Jessica Gurevitch, Janet Franklin, Peter M. Groffman, Cheryl S. Harrison, Jessica J. Hellmann, Forrest M. Hoffman, Shan Kothari, Alan Robock, Simone Tilmes
School of Earth, Environmental, and Marine Sciences Faculty Publications and Presentations
As the effects of anthropogenic climate change become more severe, several approaches for deliberate climate intervention to reduce or stabilize Earth’s surface temperature have been proposed. Solar radiation modification (SRM) is one potential approach to partially counteract anthropogenic warming by reflecting a small proportion of the incoming solar radiation to increase Earth’s albedo. While climate science research has focused on the predicted climate effects of SRM, almost no studies have investigated the impacts that SRM would have on ecological systems. The impacts and risks posed by SRM would vary by implementation scenario, anthropogenic climate effects, geographic region, and by ecosystem, …