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Articles 1 - 30 of 42
Full-Text Articles in Marine Biology
Assessment Of Living Shorelines For Restoring Fish Habitats: A Case Study From Coastal Alabama, Claire Legaspi, Matheus De Barros, Alexandra Rodriguez, Ronald Baker
Assessment Of Living Shorelines For Restoring Fish Habitats: A Case Study From Coastal Alabama, Claire Legaspi, Matheus De Barros, Alexandra Rodriguez, Ronald Baker
Gulf and Caribbean Research
No abstract provided.
Underwater Video As A Tool To Quantify Fish Density In Complex Coastal Habitats, Ronald Baker, Dakota Bilbrey, Aaron Bland, Frank D’Alonzo Iii, Hannah Ehrmann, Sharon Havard, Zoe Porter, Sarah Ramsden, Alexandra Rodriquez
Underwater Video As A Tool To Quantify Fish Density In Complex Coastal Habitats, Ronald Baker, Dakota Bilbrey, Aaron Bland, Frank D’Alonzo Iii, Hannah Ehrmann, Sharon Havard, Zoe Porter, Sarah Ramsden, Alexandra Rodriquez
University Faculty and Staff Publications
Habitat loss is a serious issue threatening biodiversity across the planet, including coastal habitats that support important fish populations. Many coastal areas have been extensively modified by the construction of infrastructure such as ports, seawalls, docks, and armored shorelines. In addition, habitat restoration and enhancement projects often include constructed breakwaters or reefs. Such infrastructure may have incidental or intended habitat values for fish, yet their physical complexity makes quantitatively sampling these habitats with traditional gears challenging. We used a fleet of unbaited underwater video cameras to quantify fish communities across a variety of constructed and natural habitats in Perdido and …
Connecting Communities To Coastal Resilience: Enhancing Sustainability Through Public Participation In Salt Marsh Management And Restoration In Suffolk County, Ny, Jennifer L. Mcgivern
Connecting Communities To Coastal Resilience: Enhancing Sustainability Through Public Participation In Salt Marsh Management And Restoration In Suffolk County, Ny, Jennifer L. Mcgivern
Dissertations, Theses, and Capstone Projects
Coastal resiliency is becoming significantly more critical to the livelihood of coastal communities as the frequency and intensity of storm events increases and is exacerbated by rising sea levels due to climate change. In October 2012 Superstorm Sandy impacted the New York-New Jersey area costing over $70 billion in storm damages and 147 lives lost, as storm surges surpassed record highs for the region. Protruding more than 100 miles into the Atlantic Ocean with over 1,000 miles of shoreline, Long Island is particularly vulnerable to the increasingly ferocious and numerous storms as well as the rising sea levels that climate …
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, …
Bull Kelp (Nereocystic Lutkeana) Restoration And Management In Northern California, Olivia Johnson
Bull Kelp (Nereocystic Lutkeana) Restoration And Management In Northern California, Olivia Johnson
Master's Projects and Capstones
Northern California’s coastal marine ecosystems support one of the most productive and biodiverse habitats on the planet. Bull kelp forests (Nereocystic lutkeana) form habitats for an abundance of marine mammals, sea bird, fish, and invertebrates. In recent years, compounding ecological and climatic factors have disrupted the balance of the bull kelp forests and led to an unprecedented loss of bull kelp biomass and canopy cover. These areas that are typically teeming with marine life have shifted into a stable state of sea urchin barrens due to over grazing of bull kelp by purple sea urchins (Strongylocentrotus pupuratus). These sea urchin …
Effects Of Freshwater Inflow On Nekton Assemblages And Blue Crab Populations In Southeastern Louisiana, Caleb Benjamin Taylor
Effects Of Freshwater Inflow On Nekton Assemblages And Blue Crab Populations In Southeastern Louisiana, Caleb Benjamin Taylor
LSU Master's Theses
Estuaries along the northern Gulf of Mexico represent some of the most productive ecosystems in the world, providing vital habitat for many recreationally and commercially valuable species, including the blue crab, Callinectes sapidus. The mixing of fresh river and saline ocean water in coastal estuaries contribute to this productivity. Dominated by large river influences and consisting of multiple estuaries, Louisiana contributes the largest commercial fishery in the Gulf of Mexico, and remains, on average, the largest supplier of blue crabs in the nation. However, across southeast Louisiana, freshwater flow is largely dependent on Mississippi River discharge, which is highly …
Examining The Effect Of Interstitial Space On Eastern Oysters (Crassostrea Virginica): Applications Of Photogrammetry And Three-Dimensional Modeling, Bailie Lavan
Masters Theses, 2010-2019
Global oyster populations have decreased by as much as 99% in the past century. Oysters are known ecosystem engineers, providing benthic habitat for macrofauna, linking benthic and pelagic food webs, improving water quality, and mitigating shoreline erosion. Restoration efforts are critical in re-establishing native oyster populations. In the Chesapeake Bay, where oyster loss is primarily due to severe over harvest, artificial substrates with geometric shapes are widely used in restoration efforts. However, natural oyster reefs form emergent shapes with a high degree of aggregation and many interstitial spaces (three-dimensional volumetric spaces between oysters within a reef). The lack of interstitial …
Wetlands Evaluation For Philbrick's Pond Marsh Drainage Evaluation North Hampton, Nh, David M. Burdick, Chris Peter, Gregg Moore
Wetlands Evaluation For Philbrick's Pond Marsh Drainage Evaluation North Hampton, Nh, David M. Burdick, Chris Peter, Gregg Moore
Natural Resources & the Environment
Philbrick’s Pond is a lagoon type estuary that formed landward of barrier beach spits in North Hampton, NH. Its inlet was stabilized and restricted by the road that is now Route 1A or Ocean Boulevard. Water flow from the Gulf of Maine passes through a culvert running under Route 1A and into a small waterway and is further restricted as it runs through a clay pipe under an old trolley berm. The lagoon is characterized as a 29 acre tidal marsh. The goal of the overall project is to evaluate the condition and hydrology of the two restrictions recognizing the …
Working On The Railroad: Coastal Streams Prioritization To Inform Restoration Planning, Paul Schlenger, Phil Bloch, Jennifer Griffiths
Working On The Railroad: Coastal Streams Prioritization To Inform Restoration Planning, Paul Schlenger, Phil Bloch, Jennifer Griffiths
Salish Sea Ecosystem Conference
Puget Sound’s nearshore has been substantially modified since the Industrial Revolution with extensive infrastructure developed along the shoreline. In Washington State, the BNSF railroad right-of-way runs along 52 miles of the shoreline, while another 73 miles of railroad is within 200 feet of the shoreline. In many places, the railroad forms a barrier between the coastal watershed and the shoreline preventing the delivery of water, sediment, wood and organic matter into the nearshore. This creates ongoing degradation of habitat quality in the nearshore, including small estuaries and coastal embayments, which provide important habitat to juvenile Chinook salmon. In addition, the …
Survival Of Hatchery-Origin Juvenile Pinto Abalone (Haliotis Kamtschatkana) Outplanted To Restoration Sites In The San Juan Islands, Henry Carson, Michael Ulrich, Josh Bouma
Survival Of Hatchery-Origin Juvenile Pinto Abalone (Haliotis Kamtschatkana) Outplanted To Restoration Sites In The San Juan Islands, Henry Carson, Michael Ulrich, Josh Bouma
Salish Sea Ecosystem Conference
The Washington Department of Fish and Wildlife, Puget Sound Restoration Fund, and other project partners have outplanted thousands of hatchery-reared pinto abalone in annual cohorts to ten sites in the San Juan Archipelago since 2009. We measured the “success” of each outplant site by the proportion of total juveniles placed that survived to a reproductive size. In winter 2017 surveys we observed a range of successes, from 0% at the worst site to 5.6% at the best. When nearby individuals are included, this success ranges as high as 7.5%. These percentages do not account for the probability of detection for …
Salish Sea Bull Kelp Restoration Research: Local, Regional And International Collaborations, William Heath, Sherryl Bisgrove
Salish Sea Bull Kelp Restoration Research: Local, Regional And International Collaborations, William Heath, Sherryl Bisgrove
Salish Sea Ecosystem Conference
Bull kelp forests are important nearshore habitats for many fish and invertebrates and are an integral part of the “salmon highway” from river to estuary to ocean and back. In recent decades kelp forests have been in serious decline in the Salish Sea and other coastal regions. Research to improve our understanding of causes of the decline and on restoration methods began in the north Salish Sea in 2011 with a kelp out-planting project by Nile Creek Enhancement Society(NCES) at Hornby Island. NCES and Project Watershed began a collaboration in 2015 with work in the K'omoks Estuary and Cape Lazo …
What's Working To Restore Puget Sound? Connecting Investments, Actions, And Outcomes, Leska S. Fore, Keith Dublanica, Jennifer Johnson, Jessica Archer
What's Working To Restore Puget Sound? Connecting Investments, Actions, And Outcomes, Leska S. Fore, Keith Dublanica, Jennifer Johnson, Jessica Archer
Salish Sea Ecosystem Conference
Throughout Puget Sound, long-term funding and investment in recovery actions have resulted in measurable improvements. Results from individual projects have been reported anecdotally in terms of improved water quality, habitat condition and wildlife, and salmon populations. Yet our ability to report these positive outcomes to funding agencies has been limited. This is because information and results are scattered across databases maintained by multiple local, state, tribal, and federal agencies. Data sets are typically well curated, but not connected. We have developed a prototype of a web tool that combines information about actions and outcomes to demonstrate the value of investments …
Evaluating Common Trends In Chinook Density And The Influence Of Temperature And Salinity Patterns Among Distributary Channels In A Large River Estuary To Aid Evaluation, Planning, And Prioritization Of Restoration Activities, Joshua Chamberlin, Jason E. Hall, Todd Zackey, Frank Leonetti, Michael Rustay
Evaluating Common Trends In Chinook Density And The Influence Of Temperature And Salinity Patterns Among Distributary Channels In A Large River Estuary To Aid Evaluation, Planning, And Prioritization Of Restoration Activities, Joshua Chamberlin, Jason E. Hall, Todd Zackey, Frank Leonetti, Michael Rustay
Salish Sea Ecosystem Conference
Landscape context is critical in estuary restoration planning and assessment due to the complexity and size of estuaries, and the unique attributes and cumulative effects of individual restoration projects. In addition, the diversity and mobility of estuarine species, in particular juvenile salmon, highlights the importance of landscape position given certain locations in the delta are less accessible to salmon. The Snohomish River delta has been the focus of major estuary restoration efforts in recent years and efforts could result in the largest cumulative estuary restoration action in Puget Sound. While several large projects have been initiated/competed in recent years, information …
Restoration Action Effectiveness: Employing The Concept Of Net Ecosystem Improvement, Ronald M. Thom, Thomas Mumford, Lucas Hart, Richard Childers
Restoration Action Effectiveness: Employing The Concept Of Net Ecosystem Improvement, Ronald M. Thom, Thomas Mumford, Lucas Hart, Richard Childers
Salish Sea Ecosystem Conference
The mission statement of the Northwest Straits Initiative includes ‘improving ecosystem health’ of the Strait of Juan de Fuca and Northern Puget Sound by restoring and protecting natural habitats and resources. For the Initiative, and many other programs, defining ‘ecosystem health’ and developing relevant and measureable health metrics is problematic, and yet critical to both assessing program action effectiveness as well as justifying investments. The Initiative is exploring utilizing the concept of net ecosystem improvement (NEI) to summarize results of actions and couch the results in a broader ecosystem perspective. Net improvement is defined as following development; there is an …
The Fisher Slough Case Study: Seven-Year Monitoring Summary: Measuring Outcomes For Fish, Farms And Flooding, Jenny Lynn Baker
The Fisher Slough Case Study: Seven-Year Monitoring Summary: Measuring Outcomes For Fish, Farms And Flooding, Jenny Lynn Baker
Salish Sea Ecosystem Conference
Half of Puget Sound’s wild Chinook salmon come from the Skagit River. Although the number dropped dramatically as 80 percent of salmon habitat in the river delta was lost over the last two centuries, the Skagit remains a critical stronghold for Puget Sound Chinook. The Skagit Chinook Recovery Plan calls for 2,700 acres of estuary restoration. But with farms in Skagit County generating more than $500 million each year, there are concerns that habitat restoration would mean loss of agricultural land, and the economy and culture it supports. The Fisher Slough project was intended to overcome long-standing conflicts between farm …
Shoreline Armoring Removal: Assessment Of Restoration Effectiveness In The Salish Sea, Jason David Toft, Jeffery R. Cordell, Megan Nichols Dethier, Emily Howe, Hannah Faulkner
Shoreline Armoring Removal: Assessment Of Restoration Effectiveness In The Salish Sea, Jason David Toft, Jeffery R. Cordell, Megan Nichols Dethier, Emily Howe, Hannah Faulkner
Salish Sea Ecosystem Conference
Shoreline armoring removal is becoming a common restoration technique in the nearshore of the Salish Sea, yet we lack a comprehensive understanding of the ecological benefits obtained, and how such an understanding could be used to inform management recommendations and educate diverse audiences. To address this knowledge gap, we studied effects of shoreline armor removal at 10 sites, expanding the spatial framework of what was previously known by collaborating across academic (University of Washington), agency (Washington Department of Fish and Wildlife), and citizen science groups. Each site had three beach types of: (1) restored beaches with armoring removed 1-11 years …
Chinook Habitat Restoration Decision Support Tool- Identifying Chinook Salmon Habitat Restoration Effectiveness Based On Temperature, Flow, And Bioenergetics Models, Andrew Spanjer, Patrick W. Moran, Robert Black
Chinook Habitat Restoration Decision Support Tool- Identifying Chinook Salmon Habitat Restoration Effectiveness Based On Temperature, Flow, And Bioenergetics Models, Andrew Spanjer, Patrick W. Moran, Robert Black
Salish Sea Ecosystem Conference
Stream restoration projects focus on improving habitat for Pacific Salmonids in watersheds throughout the Pacific Northwest. Currently, few comprehensive tools are available for managers to mechanistically predict the improved fish growth that comes with restoration actions, such as riparian acquisitions, riparian planting or levee setbacks. Therefore, managers need tools that can predict salmonid growth potential given different decision scenarios. One approach to address the Puget Sound Partnership’s regional chinook recovery goals would be a linked stream temperature, flow, and fish bioenergetics model that predict chinook growth benefits of different remediation strategies. Considered strategies will include changes to riparian habitat and …
The Transformation Of Port Gamble Bay: From Remediation To Restoration, Celina Abercrombie
The Transformation Of Port Gamble Bay: From Remediation To Restoration, Celina Abercrombie
Salish Sea Ecosystem Conference
For over 140 years, a lumber mill operated at the mouth of Port Gamble Bay producing lumber and other wood products, and leaving behind a legacy of contamination and degraded habitat when it closed its doors in 1995. Fast forward to the present when state and federal agencies, local government, tribes, community groups, and industry teamed up to cleanup, restore and preserve the bay’s high-quality natural resources. Undertaking extensive cleanup and the largest creosote-treated piling removal effort in the Puget Sound, Pope Resources removed contaminated sediment, over 8,500 creosote-treated pilings and numerous overwater structures to improve over 3,000 feet of …
Is Local Adaptation A Factor In Planning Eelgrass Restoration? Initial Assessment Of Responses To Temperature By Eelgrass Growing Across A Stressor Gradient, Kate Buenau, Celia Thurman, John Vavrinec, A. B. (Amy B.) Borde, Ronald M. Thom
Is Local Adaptation A Factor In Planning Eelgrass Restoration? Initial Assessment Of Responses To Temperature By Eelgrass Growing Across A Stressor Gradient, Kate Buenau, Celia Thurman, John Vavrinec, A. B. (Amy B.) Borde, Ronald M. Thom
Salish Sea Ecosystem Conference
Large-scale eelgrass restoration in an environment as complex as the Salish Sea requires estimating the effects of a wide range of environmental conditions (e.g. temperature, salinity, turbidity) on the effectiveness of restoration actions in different locations. We have developed a spatial model of eelgrass growth in response to environmental drivers, based on physiological data collected in Sequim Bay, WA, to aid in identifying restoration sites. However, field tests suggest that the model underestimates the capability of eelgrass to grow in conditions more stressful than Sequim Bay. A critical uncertainty is the extent of localized genotypic and/or phenotypic adaptations by eelgrass …
Plant Community And Nutrient Development Within Four Estuary Restoration Sites In Kitsap County, Washington, Shannon Call, Jenise M. Bauman
Plant Community And Nutrient Development Within Four Estuary Restoration Sites In Kitsap County, Washington, Shannon Call, Jenise M. Bauman
Salish Sea Ecosystem Conference
Estuaries affected by physical barriers, such as culverts, experience reduced hydrological inputs and reduced connectivity resulting in the loss of ecological processes. To address reduction in ecological connectedness, culverts at three sites were removed and replaced with bridges. An observational field study was conducted in Kitsap County, Washington of three sites where culverts were replaced with bridges three, eight, and 13 years ago. Data was collected at a reference site where the estuary contains a culvert. It is hypothesized that estuary restoration will recover plant species, carbon sequestration, and nutrient cycling homogeneity above and below the restoration site. However, the …
Eelgrass (Zostera Marina) Restoration In Puget Sound: Restoration Tools, Successes And Challenges, Jeff Gaeckle, John Vavrinec, Kate Buenau, A. B. (Amy B.) Borde, Lara Aston, Ronald M. Thom, Jim Shannon
Eelgrass (Zostera Marina) Restoration In Puget Sound: Restoration Tools, Successes And Challenges, Jeff Gaeckle, John Vavrinec, Kate Buenau, A. B. (Amy B.) Borde, Lara Aston, Ronald M. Thom, Jim Shannon
Salish Sea Ecosystem Conference
Eelgrass (Zostera marina) is one of 25 Vital Signs to track the health of Puget Sound and restoration of this critical nearshore habitat is part of the overall regional recovery strategy. Eelgrass restoration will provide a multitude of benefits, ranging from habitat for species to ameliorating the effects of climate change. Since 2013, the Washington State Department of Natural Resources has led regional evaluation of potential eelgrass restoration sites and transplanting in Washington State. Through collaborations we have developed and tested strategies to enhance transplant success and restore natural processes. We developed an eelgrass transplant suitability model to identify potential …
Sea Level Rise Guidance For Nearshore Habitat Restoration In Puget Sound, Harriet Morgan, Nicole Faghin, Jay Krienitz, Tish Conway-Cranos
Sea Level Rise Guidance For Nearshore Habitat Restoration In Puget Sound, Harriet Morgan, Nicole Faghin, Jay Krienitz, Tish Conway-Cranos
Salish Sea Ecosystem Conference
Many agencies, organizations, and communities across Puget Sound are working to restore nearshore habitats from historic degradation to reestablish or maintain the functionality of these ecosystems. Sea level rise is expected to cause increased coastal flooding in low-lying areas and increased storm surge reach in coastal zones. There is widespread recognition that these new threats must be addressed in the siting, design, and maintenance of Puget Sound’s nearshore habitat restoration projects, especially given the limited resources available for restoration. In spite of this, existing information on sea level rise has not yet been synthesized in a way that facilitates incorporation …
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. …
An Investigation Of Benthic Recovery And Climate Change Resilience In The Englishman River Estuary, Connie L. Miller Retzer, Thomas G. Reid, Peter K. Dekoning
An Investigation Of Benthic Recovery And Climate Change Resilience In The Englishman River Estuary, Connie L. Miller Retzer, Thomas G. Reid, Peter K. Dekoning
Salish Sea Ecosystem Conference
SNAPSHOT: A benthic monitoring program will be added in 2018 to the ongoing Englishman River Estuary recovery study, situated on the east coast of Vancouver Island. This will complement investigations which have been ongoing, prior to and following the removal of a berm during 2017. Changes in salinity patterns, flow regimes, channel morphology, elevation, sediment size, and vegetation distribution are being assessed and these variables will be used to map distinctive areas of the estuary. Benthic samples will be collected from representative areas and monitored over the long term. Relative and total abundance, species diversity, biomass, and various derivatives of …
New Brighton Shoreline Habitat Restoration Project, Mike Tranmer
New Brighton Shoreline Habitat Restoration Project, Mike Tranmer
Salish Sea Ecosystem Conference
The New Brighton Park Shoreline Habitat Restoration Project is situated within New Brighton Park along the south side of Burrard Inlet, west of the Second Narrows Bridge in Vancouver, B.C. The project was undertaken through a partnership with the Vancouver Fraser Port Authority and the Vancouver Board of Parks and Recreation, along with Musqueam, Squamish and Tsleil-Waututh Nations. The project was part of the port authority’s Habitat Enhancement Program, which focuses on creating, restoring and enhancing fish and wildlife habitat. The project presented a significant opportunity to restore coastal wetland habitat on the south shore of Burrard Inlet. The creation …
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 …
Collaborative Solutions To Riparian Protection And Restoration In The Chimacum Creek Watershed, Sarah Doyle
Collaborative Solutions To Riparian Protection And Restoration In The Chimacum Creek Watershed, Sarah Doyle
Salish Sea Ecosystem Conference
For several decades, the North Olympic Salmon Coalition (NOSC) has been working with agricultural producers in the Chimacum Creek Watershed to plant riparian buffers and restore salmon habitat. In recent years, NOSC and partners have had difficulty engaging landowners to participate in riparian restoration and protection programs due to issues regarding drainage, reed canary grass and beaver damage. To help guide us in how to address these barriers to landowner willingness, NOSC partnered with local entities to develop a Chimacum Creek Protection and Restoration Strategy. Since the strategy has been implemented, four priority farms are now being considered for protection …
Integrating Watershed-Scale And River-Reach Protection And Restoration Planning To Promote Climate Resilience In The South Fork Nooksack River (Sfnr), Oliver Grah, Susan Dickerson-Lange
Integrating Watershed-Scale And River-Reach Protection And Restoration Planning To Promote Climate Resilience In The South Fork Nooksack River (Sfnr), Oliver Grah, Susan Dickerson-Lange
Salish Sea Ecosystem Conference
The Nooksack Indian Tribe reservation is located at the foot of the North Cascades Mountains, approximately 13 miles east of Bellingham, WA and the Salish Sea. The Tribe relies on a harvestable surplus of Pacific salmon in the Nooksack River for cultural, subsistence, and commercial purposes. Today, Pacific salmon runs are less than 10 percent of the runs in the late 1800’s. Causes of the declines are complex; however, it is well understood that the legacy of commercial forestry, agriculture, and development has increased sediment loading and water temperature. Climate impacts will cumulatively add to the legacy impacts, which are …
Empowering Coastal Engineers And Scientists With Unmanned Systems, Preston Martin
Empowering Coastal Engineers And Scientists With Unmanned Systems, Preston Martin
Salish Sea Ecosystem Conference
The increasing availability of commercial off-the-shelf unmanned systems is placing powerful data acquisition tools within reach of scientists and engineers engaged in coastal management, restoration, and remediation. Two diverse use cases are presented here which showcase the effectiveness of combined mapping by Unmanned Aircraft System (UAS) and Unmanned Surface Vessel (USV) to generate orthomosaic imagery and 3D digital surface models of subaqueous/subaerial terrain in low-lying and intertidal settings. These examples include combined UAS structure from motion (SfM) photogrammetry and USV single-beam sonar bathymetry: (1) to inform remedial design alternatives at an intertidal mudflat cleanup site in Class B airspace; and …
Structure From Motion On Salish Shores: Remote Mapping For Restoration, Branden Rishel
Structure From Motion On Salish Shores: Remote Mapping For Restoration, Branden Rishel
Salish Sea Ecosystem Conference
This talk will showcase several projects by Coastal Geologic Services (CGS) in which structure from motion (SfM) modeling played a critical role, while also briefly discussing the advantages and possible applications of this relatively new technology. Over the last few years, SfM has transformed from an emerging technology to a reliable, efficient, and cost-effective method for constructing aerial orthophoto mosaics and 3D models of coastal landscapes. Low-altitude aerial imagery, such as from inexpensive drones (UAS or UAV), can be used to create point clouds that exceed LiDAR resolution and accuracy, at a much lower cost. This enables 3D scanning of …