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Articles 1 - 16 of 16
Full-Text Articles in Life Sciences
High-Frequency Temperature Variability Mirrors Fixed Differences In Thermal Limits Of The Massive Coral Porites Lobata, Daniel J. Barshis, Charles Birkeland, Robert J. Toonen, Ruth D. Gates, Jonathon H. Stillman
High-Frequency Temperature Variability Mirrors Fixed Differences In Thermal Limits Of The Massive Coral Porites Lobata, Daniel J. Barshis, Charles Birkeland, Robert J. Toonen, Ruth D. Gates, Jonathon H. Stillman
Biological Sciences Faculty Publications
Spatial heterogeneity in environmental characteristics can drive adaptive differentiation when contrasting environments exert divergent selection pressures. This environmental and genetic heterogeneity can substantially influence population and community resilience to disturbance events. Here, we investigated corals from the highly variable back-reef habitats of Ofu Island in American Samoa that thrive in thermal conditions known to elicit widespread bleaching and mortality elsewhere. To investigate the relative importance of acclimation versus site of origin in shaping previously observed differences in coral tolerance limits at Ofu Island, specimens of the common Indo-Pacific coral Porites lobata from locations with differing levels of thermal variability were …
Synergistic Effects Of Temperature And Salinity On The Gene Expression And Physiology Of Crassostrea Virginica, Hollis Jones
Synergistic Effects Of Temperature And Salinity On The Gene Expression And Physiology Of Crassostrea Virginica, Hollis Jones
LSU Master's Theses
Crassostrea virginica, the eastern oyster, forms reefs that provide critical services and benefits to the resiliency of the surrounding ecosystem. Changes in environmental conditions, including salinity and temperature, can dramatically alter the services oysters provide by affecting their population dynamics. Climate warming may further exacerbate the effects of salinity changes as precipitation events increase in frequency, intensity, and duration. Temperature and salinity independently and synergistically influence gene expression and physiology in marine organisms. We used comparative transcriptomics, physiology, and a field assessment experiment to investigate whether Louisianan oyster are changing their phenotypes to cope with increased temperature and salinity …
An Overview Of Factors Affecting Distribution Of The Atlantic Surfclam (Spisula Solidissima), A Continental Shelf Biomass Dominant, During A Period Of Climate Change, Eileen E. Hoffman, Eric N. Powell, John M. Klink, Daphne M. Munroe, Roger Mann, Dale B. Haidvogel, Diego A. Narváez, Xinzhong Zhang, Kelsey M. Kuykendall
An Overview Of Factors Affecting Distribution Of The Atlantic Surfclam (Spisula Solidissima), A Continental Shelf Biomass Dominant, During A Period Of Climate Change, Eileen E. Hoffman, Eric N. Powell, John M. Klink, Daphne M. Munroe, Roger Mann, Dale B. Haidvogel, Diego A. Narváez, Xinzhong Zhang, Kelsey M. Kuykendall
Faculty Publications
The Atlantic surfclam (Spisula solidissima) is a dominant member of the biological community of the Middle Atlantic Bight continental shelf and a commercially harvested species. Climate warming is affecting the biology and distribution of this species, which provides an opportunity to investigate the processes and conditions that are restructuring this fishery and the implications for ecological and socioeconomic systems. A Management Strategy Evaluation (MSE) developed for the surfclam fishery provides a mechanistic description of the surfclam's response to climate change and understanding of the cascade of effects initiated by changes in oceanographic conditions that ultimately appear as social and economic …
Dermal Mycobacteriosis And Warming Sea Surface Temperatures Are Associated With Elevated Mortality Of Striped Bass In Chesapeake Bay, Maya L. Groner, John M. Hoenig, Roger Pradel, Rémi Choquet, Wolfgang K. Vogelbein, David T. Gauthier, Marjorie A. M. Friedrichs
Dermal Mycobacteriosis And Warming Sea Surface Temperatures Are Associated With Elevated Mortality Of Striped Bass In Chesapeake Bay, Maya L. Groner, John M. Hoenig, Roger Pradel, Rémi Choquet, Wolfgang K. Vogelbein, David T. Gauthier, Marjorie A. M. Friedrichs
Biological Sciences Faculty Publications
Temperature is hypothesized to alter disease dynamics, particularly when species are living at or near their thermal limits. When disease occurs in marine systems, this can go undetected, particularly if the disease is chronic and progresses slowly. As a result, population-level impacts of diseases can be grossly underestimated. Complex migratory patterns, stochasticity in recruitment, and data and knowledge gaps can hinder collection and analysis of data on marine diseases. New tools enabling quantification of disease impacts in marine environments include coupled biogeochemical hydrodynamic models (to hindcast key environmental data), and multievent, multistate mark-recapture (MMSMR) (to quantify the effects of environmental …
Thresholds And Drivers Of Coral Calcification Responses To Climate Change, Niklas Kornder, Bernhard Riegl, Joana Figueiredo
Thresholds And Drivers Of Coral Calcification Responses To Climate Change, Niklas Kornder, Bernhard Riegl, Joana Figueiredo
Marine & Environmental Sciences Faculty Articles
Increased temperature and CO2 levels are considered key drivers of coral reef degradation. However, individual assessments of ecological responses (calcification) to these stressors are often contradicting. To detect underlying drivers of heterogeneity in coral calcification responses, we developed a procedure for the inclusion of stress–effect relationships in ecological meta‐analyses. We applied this technique to a dataset of 294 empirical observations from 62 peer‐reviewed publications testing individual and combined effects of elevated temperature and pCO2 on coral calcification. Our results show an additive interaction between warming and acidification, which reduces coral calcification by 20% when pCO2 levels exceed …
Spatial Distribution And Stock-Recruitment Analysis Of The Atlantic Surfclam, Spisula Solidissima, In The Mid-Atlantic Bight And On Georges Bank, Jeremy Timbs
Master's Theses
Atlantic surfclams, Spisula solidissima, are long-lived bivalve molluscs with dispersive larval stages. Surfclam patchiness throughout the U.S. Exclusive Economic Zone (EEZ) has declined from the 1980’s to the present in all assessed regions (Delmarva, New Jersey, Long Island, Southern New England, and Georges Banks). Warming of Mid-Atlantic bottom waters is driving the surfclam stock into new habitat and extirpating the surfclams from nearshore areas. Based on a species distribution function model, the small surfclams appear to inhabit a greater area than the large market-size surfclams across the entire stock. The wider distribution of recent recruits relative to the fishable …
Climate And Plant Controls On Soil Organic Matter In Coastal Wetlands, Michael J. Osland, Christopher A. Gabler, James B. Grace, Richard H. Day, Meagan L. Mccoy, Jennie L. Mcleod, Andrew S. From, Nicholas M. Enwright, Laura C. Feher, Camille L. Stagg
Climate And Plant Controls On Soil Organic Matter In Coastal Wetlands, Michael J. Osland, Christopher A. Gabler, James B. Grace, Richard H. Day, Meagan L. Mccoy, Jennie L. Mcleod, Andrew S. From, Nicholas M. Enwright, Laura C. Feher, Camille L. Stagg
School of Earth, Environmental, and Marine Sciences Faculty Publications and Presentations
Coastal wetlands are among the most productive and carbon‐rich ecosystems on Earth. Long‐term carbon storage in coastal wetlands occurs primarily belowground as soil organic matter (SOM). In addition to serving as a carbon sink, SOM influences wetland ecosystem structure, function, and stability. To anticipate and mitigate the effects of climate change, there is a need to advance understanding of environmental controls on wetland SOM. Here, we investigated the influence of four soil formation factors: climate, biota, parent materials, and topography. Along the northern Gulf of Mexico, we collected wetland plant and soil data across elevation and zonation gradients within 10 …
Providing Modeling Tools On Extreme Events Of Climate Change To Puget Sound Managers, Andrea Copping, Zhaoqing Yang, Ian Miller, Jude K. Apple, Guillaume Mauger, Nathalie Voisin, Aimee Fullerton, Ning Sun, Mikaela Freeman
Providing Modeling Tools On Extreme Events Of Climate Change To Puget Sound Managers, Andrea Copping, Zhaoqing Yang, Ian Miller, Jude K. Apple, Guillaume Mauger, Nathalie Voisin, Aimee Fullerton, Ning Sun, Mikaela Freeman
Salish Sea Ecosystem Conference
As climate change becomes a reality for the management of Puget Sound, water resource and fisheries managers should consider incorporating predictions and outcomes of future climate drivers into their long-range plans and daily operations. Modeling tools that focus on climate impacts and predictions show that extreme events are more often responsible for large impacts than the long-term press of climate change. Working with water resource and fisheries managers in the Dungeness and Skagit watersheds, this project uses outputs of existing climate and estuarine models to define thresholds and metrics associated with extreme climate-driven events that are of importance to the …
Recent Conditions Highlight Regional Differences In Temperature, Salinity And Dissolved Oxygen Between Strait Of Juan De Fuca And Puget Sound Sites Under Anomalous 2014-2017 Climate Patterns, Julia Bos, Christopher Krembs, S. L. Albertson, Mya Keyzers, Allison Brownlee, Carol Maloy
Recent Conditions Highlight Regional Differences In Temperature, Salinity And Dissolved Oxygen Between Strait Of Juan De Fuca And Puget Sound Sites Under Anomalous 2014-2017 Climate Patterns, Julia Bos, Christopher Krembs, S. L. Albertson, Mya Keyzers, Allison Brownlee, Carol Maloy
Salish Sea Ecosystem Conference
Understanding impacts of climate change on Salish Sea water quality is critical yet challenging due to the complexity, strength and diversity of influences on circulation and mixing. Different extreme climate conditions in recent years (2014-2017) include record warm temperatures with reduced snow pack in 2014-2015 followed by a few years of alternating summer droughts with record rainy seasons. These conditions influenced marine water temperature, salinity and dissolved oxygen (DO) throughout the Salish Sea. Analyses reveal distinct differences in these key physical and chemical characteristics between Strait of Juan de Fuca sites and sites within Puget Sound basins. Extremely low DO …
Space Matters: Incorporating Mechanistically Determined Spatial Patterns Into Projected Impacts Of Climate Change On Stream Temperature, Se-Yeun Lee, Aimee H. Fullerton, Ashley Steel, Christian Torgersen
Space Matters: Incorporating Mechanistically Determined Spatial Patterns Into Projected Impacts Of Climate Change On Stream Temperature, Se-Yeun Lee, Aimee H. Fullerton, Ashley Steel, Christian Torgersen
Salish Sea Ecosystem Conference
River temperatures are increasing as a results of climate change, and combined with decreased summertime flows, coldwater species are becoming increasingly stressed. In order to conserve sensitive species, managers need an estimate of how the availability of summertime thermal refuges in rivers will change in the future. Here, we applied the DHSVM-RBM, an existing process-based water temperature model that has been shown to accurately represent temporal variance in water temperature over hours to years. We calibrated this model to empirical data for two case study watersheds (Siletz River, Oregon and Snoqualmie River, Washington) to also ensure representation of observed spatial …
Zooplankton Ecology Of The Fraser River Estuary, Joanne Breckenridge, Evgeny Pakhomov
Zooplankton Ecology Of The Fraser River Estuary, Joanne Breckenridge, Evgeny Pakhomov
Salish Sea Ecosystem Conference
Zooplankton are critical components of the pelagic food web. This presentation will discuss zooplankton ecology in the Fraser River Estuary, drawing on the preliminary results of a monitoring study, which ran from August 2013 to May 2016, as well as specific investigations into the life history and behaviour of one of the dominant species, the copepod Eurytemora affinis. Data analysis is ongoing, but, for most of the year, estuarine zooplankton appear limited by the estuary’s short residence time. Due to the advective nature of their environment, estuarine zooplankton have evolved mechanisms to retain populations within the estuary. Our results suggest …
Climate Change Adaptation Planning For Port Of Seattle Waterfront Properties, Joseph Gellings
Climate Change Adaptation Planning For Port Of Seattle Waterfront Properties, Joseph Gellings
Salish Sea Ecosystem Conference
As Seattle’s economy continues to evolve, its significance as a port city is undiminished. The container ports of Seattle and Tacoma recently entered into a joint management agreement and, together, they are the fourth largest container gateway in North America. At the same time, competition is fierce between the remaining rival ports and capital spending on the land-side cargo terminals is a key variable in this competition. This makes it critical that the Port understands what role climate change adaptation will play in the broader challenge of setting the level of public fund expenditures on terminal upgrade projects. The types …
Lessons Learned: Tidal Marsh Restoration In A Dynamic Context Of Stress And Climate Change, Roger Nathan Fuller
Lessons Learned: Tidal Marsh Restoration In A Dynamic Context Of Stress And Climate Change, Roger Nathan Fuller
Salish Sea Ecosystem Conference
In the Stillaguamish estuary, tidal wetlands have been receding for decades as a result of both natural and anthropogenic changes. Despite current restoration efforts, monitoring suggests that rising stress from climate change impacts on summer flows, legacy stresses from the levee system, and increased plant mortality from avian and insect herbivores may interact to accelerate the rate of marsh loss. Lessons learned from a 2012 restoration project should inform adaptive management and future restoration projects. Post-restoration monitoring has revealed a pattern of interacting stresses at both the site and system scales that affects marsh productivity and resilience to climate change. …
Guiding Chinook Salmon Recovery Projects Towards A More Resilient Future, Stacy Vynne Mckinstry, Amber Moore
Guiding Chinook Salmon Recovery Projects Towards A More Resilient Future, Stacy Vynne Mckinstry, Amber Moore
Salish Sea Ecosystem Conference
Changing climate conditions, along with land-use and other ecological changes, are affecting the health, vitality, and resilience of Chinook salmon populations in watersheds throughout Puget Sound. Restoration and protection projects are designed to address the most critical factors affecting salmon populations. However, with climate change, these factors may change: the medium- and long-term success of the projects and expected benefits to salmon may be compromised and/or current investments may not achieve expected results. The Puget Sound Partnership recently released guidance to help project sponsors and local salmon recovery lead entities identify key climate-related risks for Chinook salmon, guide project sponsors …
Fir Island Farm: Estuary Restoration Project: Designing For Climate Change And Uncertainty In Shoreline Flood Risk Reduction And Ecosystem Restoration Projects, David Cline
Salish Sea Ecosystem Conference
The recently designed and constructed Fir Island Farm – Estuary Restoration Project involves construction of a 1-mile long shoreline levee (dike) setback for restoration of 130 acres of farm land for tidal marsh estuary ecosystem restoration. The key uncertainty, and resiliency, design elements of concern include 1) selection of dike level of protection and design elevations considering climate change sea level rise projections, 2) inclusion of erosion protection measures, 3) farm drainage tailwater conditions and 4) ecosystem marsh vegetated plain future elevations and large woody debris loading conditions. This presentation discusses how site characterization, instrumentation, numerical modeling and monitoring were …
Cumulative Stress Restricts Niche Filling Potential Of Habitat-Forming Kelps In A Future Climate, Nathan G. King, David C. Wilcockson, Richard Webster, Dan A. Smale, Laura S. Hoelters, Pippa J. Moore
Cumulative Stress Restricts Niche Filling Potential Of Habitat-Forming Kelps In A Future Climate, Nathan G. King, David C. Wilcockson, Richard Webster, Dan A. Smale, Laura S. Hoelters, Pippa J. Moore
Research outputs 2014 to 2021
Climate change is driving range contractions and local population extinctions across the globe. When this affects ecosystem engineers the vacant niches left behind are likely to alter the wider ecosystem unless a similar species can fulfil them.
Here, we explore the stress physiology of two coexisting kelps undergoing opposing range shifts in the Northeast Atlantic and discuss what differences in stress physiology may mean for future niche filling.
We used chlorophyll florescence (Fv/Fm) and differentiation of the heat shock response (HSR) to determine the capacity of the expanding kelp, Laminaria ochroleuca, to move …