Download or read book Management Recommendations for Restoration of the Degraded Olympia Oyster Ostrea Lurida Carpenter 1864 in Tomales Bay CA written by Carolyn M Gibson and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This research addresses the effective restoration of Olympia oyster populations in Tomales Bay, Marin County, California. Chapter 2 provides background information on the Tomales Bay estuary, regional history, and ecology of the Olympia oyster. Following this background discussion, each of the three aforementioned degraders of Olympia oyster populations in Tomales Bay is presented: ocean acidification (Chapter 3), sedimentation (Chapter 4), and invasive species (Chapter 5). Each of these issues creates numerous barriers that require the attention of resource protection managers. Chapter 6 presents overall Research Conclusions and Chapter 7 identifies management recommendations to effectively begin the restoration of the Olympia oyster in Tomales Bay. The Olympia oysters of Tomales Bay endured degradation and limitation due to centuries of human activities. Therefore, it is the responsibility of humans to address and manage the degrading factors. As a federally protected estuary, Tomales Bay enjoys certain protections and restrictions against environmentally harmful activities, but violators like ocean acidification, sedimentation, and invasive species cannot be fined or cited. The only solution to their detrimental impacts is for the National Marine Sanctuary Program, its partners and other resource conservation managers to target them at their sources. The Olympia oyster is a native foundation species whose presence improves the water quality and biodiversity of the entire ecosystem. Therefore, Olympia oyster restoration requires immediate consideration, and this document provides those first needed steps towards restoration.

Download or read book High Predation May Hinder Native Oyster Ostrea Lurida Carpenter 1864 Restoration in North Humboldt Bay California written by Julie A. Koeppel and published by . This book was released on 2011 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Population Status and Molecular Systematics of the Olympia Oyster Ostrea Lurida Carpenter 1864 written by Maria Polycarpou Polson and published by . This book was released on 2008 with total page 120 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Evaluation of Survey Methodologies for Monitoring Olympia Oyster Ostrea Lurida Carpenter 1864 Populations in British Columbia written by and published by . This book was released on 2010 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Impacts of Paired Olympia Oyster Ostrea Lurida and Eelgrass Zostera Marina Restoration on Fish and Infaunal Communities in Upper Newport Bay California written by Marjorie Howard and published by . This book was released on 2019 with total page 128 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: Losses of diversity from wetland habitat decline may be counteracted via habitat restoration using a living shoreline design. This study assesses paired oyster and seagrass restoration through response of fish and infaunal invertebrates. Olympia oysters (Ostrea lurida) and eelgrass (Zostera marina) were restored, separately and paired, at four sites in Newport Bay, CA. Infauna were monitored via sediment cores pre- and post-restoration. Fish were sampled using baited camera traps and quadrats. I predicted infaunal losses would occur directly beneath oyster beds, but that eelgrass would enhance infaunal communities, offsetting this decrease in paired habitats. I expected greater fish abundance and diversity within restored habitats. Predicted infaunal diebacks were observed only beneath oyster beds. Significant infaunal shifts, including increased species richness, were observed within eelgrass beds, suggesting benefits of paired restoration. Unique fish species were observed within each restoration treatment, highlighting the ecological value of each habitat’s presence in restored wetlands.

Download or read book The Effects of Restoration Methodology Using Olympia Oysters Ostrea Lurida and Eelgrass Zostera Marina on Infaunal Invertebrate Community Composition in Newport Bay California written by Elishebah Tate-Pulliam (Graduate student) and published by . This book was released on 2021 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: Coastal wetlands provide a variety of ecosystem functions, including habitat provision, water filtration, and sediment stabilization. Despite this recognized importance, there has been global loss of wetland habitat, particularly in urban areas. This decline highlights a need for research into effective restoration techniques. The Upper Newport Bay Marine Ecological Reserve (UNB) restoration project focuses on living shoreline (LS) restoration that combines multiple native habitats to restore a range of ecosystem functions. To investigate one LS design, beds of native Olympia oysters (Ostrea lurida) and eelgrass (Zostera marina) were restored, both separately and paired at four sites in UNB. The infaunal invertebrate community was monitored pre- and post-restoration. While there were significant decreases in infaunal abundance, species richness, and diversity under intertidal oyster beds from 2016 to 2018, these changes were not seen outside the footprint of the oyster beds themselves. As percent shell cover on the beds has changed, intertidal oyster and paired plots showed the first signs of recovery since oyster bed construction with increased abundance, species richness, and diversity from 2018 – 2019. Considering the infaunal community of the intertidal and subtidal plots together indicates that higher abundances in the subtidal eelgrass plots can offset the loss seen in the intertidal oyster plots, demonstrating value for the paired design. Overall, this study supports the idea that, with careful design and placement, oyster and eelgrass restoration can support multiple ecosystem functions.

Download or read book Navigating the Regulatory Barriers to Native Oyster Restoration in Washington State written by Danielle Edelman and published by . This book was released on 2018 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Olympia oyster (Ostrea lurida) has been the focus of restoration efforts in Washington State for decades. Many biological and ecological factors contribute to the success of oyster restoration projects, and there is a wide range of information available to restoration project managers who want to take these factors into consideration when planning new restoration sites. However, less information exists on the regulatory factors which contribute to the early success of Olympia oyster restoration projects. The complex permitting system which surrounds shellfish aquaculture in Washington places a regulatory burden on oyster restoration projects, and makes it difficult for new projects to begin in an efficient and timely manner. In this thesis, I perform a decision analysis using Analytic Hierarchy Process (AHP) to determine which of several alternative permitting pathways would best reduce the regulatory burden on Olympia oyster restoration projects. The goal of this analysis is to provide basic permitting strategy recommendations for county-level restoration groups and a model with which they can quantitatively examine criteria and alternatives related to permitting pathways for shellfish aquaculture in Washington. Using this decision analysis method, I found that strategies such as partnering with previously-permitted shellfish aquaculture sites and requesting permit exemptions can reduce the regulatory burden on oyster restoration projects by minimizing the number of permits required, the time required for permits to be approved, and the costs associated with lengthy and complex permitting processes.

Download or read book Index Site Surveys for Olympia Oysters Ostrea Lurida Carpenter 1864 in British Columbia 2009 to 2017 written by Tammy Norgard and published by . This book was released on 2018 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Olympia oyster (Ostrea lurida Carpenter, 1864) was designated a species of Special Concern under the Canadian Species at Risk Act in 2003. A management plan was developed in 2009, and a primary objective was maintenance of relative abundance (density) at index sites. Fourteen index sites were chosen to monitor density within their range in Canadian waters. This report summarizes results from 43 surveys at 14 index sites from 2009 to 2017.--Document.

Download or read book Field Verification of Historic Records of Olympia Oysters Ostrea Lurida Carpenter 1864 in British Columbia 2009 written by L. M. Stanton and published by . This book was released on 2011 with total page 115 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Field Verification of Historic Records of Olympia Oysters Ostrea Lurida Carpenter 1864 in British Columbia 2010 and 2011 written by J. L. Finney and published by . This book was released on 2012 with total page 91 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Effects of Temperature Salinity and Food Stress on Larval Growth and Development in the Olympia Oyster Ostrea Lurida written by Alicia Rippington and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Ostrea lurida Carpenter 1864 is the only native oyster on the western North American coast, but it is functionally extinct in most of its historic range. Knowledge of environmental tolerances during larval development of O. lurida is minimal, which limits recovery strategies for this listed "species of special concern" (Species At Risk Act). The effects of rearing temperature (13, 17, 21°C), salinity (11, 15, 21, 24, 30, 31 psu) and food concentration (5x103, 1x104 and 5x104 algal cells/ml) on larval growth and development were investigated. Larvae were obtained from laboratory conditioned adults from Ladysmith Harbour, and the Gorge Waterway on Vancouver Island BC.

Download or read book Response of Olympia Oysters Ostrea Lurida to Changing Environmental Conditions written by Jake Heare and published by . This book was released on 2014 with total page 111 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Olympia oyster is an iconic oyster species in the Pacific Northwest with special significance in Puget Sound, WA. Oyster populations in the region were decimated to historic lows during the 20th century due to a number of factors including overharvest, habitat loss, and invasive species. Restoration projects have seen limited success, likely due to the limited information on stock structure within Puget Sound, especially in regards to adaptive abilities and habitat suitability. Chapter one of this study investigates population related fitness measures (ie. mortality, growth, reproduction) within three resident populations from geographically isolated locations in Puget Sound. Using a reciprocal transplant experiment with Ostrea lurida populations from Fidalgo Bay, Dabob Bay, and Oyster Bay, we found that two of the three populations (Dabob Bay and Oyster Bay) express significant phenotypic signatures related to the population. Using this information we offer restoration strategies catered to population phenotypes in an effort to improve restoration projects in the Puget Sound. In Chapter two, we ran a thermal and mechanical stress experiment due to differences in mortality between populations observed in Chapter 1 to investigate expression of genes (via qPCR) related to survival. We found differences in expression related to gene transcription, which indicates possible phenotypic plasticity previously unknown in the study populations though further investigation is required.

Download or read book Olympia Oyster Restoration written by Charlotte Loring Dohrn and published by . This book was released on 2020 with total page 81 pages. Available in PDF, EPUB and Kindle. Book excerpt: Oyster habitat suitability index (HSI) models can support conservation and restoration planning, siting aquaculture projects, and other purposes. In recent decades, partners have undertaken efforts to restore populations of Olympia oysters (Ostrea lurida) in the Salish Sea. Olympia oyster restoration projects are more likely to become self-sustaining and contribute to overall population growth when sited in locations with optimal conditions. This study describes the development and application of a preliminary HSI model for Olympia oyster restoration in the southern Salish Sea. Environmental data and tolerance thresholds for six habitat variables – tidal elevation, salinity, temperature, current velocities, low salinity events, and water residence time – are compiled to create a geospatial index of suitability. This study identifies potentially suitable habitat throughout the study region. HSI output is compared to oyster observations and abundance at restored sites to evaluate accuracy and consider potential applications. While predictions of suitable habitat and oyster presence and abundance align in some locations, there are limitations to using the index as a tool for restoration planning. In addition, this study provides an example of how the HSI may be used to explore climate change considerations for restoration projects. The results of this study, in combination with other methods and information, may provide a useful preliminary tool for identifying potentially suitable locations for Olympia oyster restoration projects in the region.

Download or read book Vertical Distribution of Olympia Oyster Ostrea Lurida Larvae in Fidalgo Bay WA written by Brooke A. McIntyre and published by . This book was released on 2018 with total page 90 pages. Available in PDF, EPUB and Kindle. Book excerpt: Restoring populations of native Olympia oyster (Ostrea lurida) in the Salish Sea is ecologically and socially valuable. Olympia oysters disperse as planktonic larvae that control their depth with swimming and sinking behaviors, which can affect the currents that carry them and ultimately determine dispersal. Understanding larval dispersal patterns can help prioritize restoration efforts and establish a self-sustaining network of oyster populations in the region. The purpose of this study was to determine which factors (temperature, chlorophyll-a, larval size, current speed, tidal stage) influence the vertical distribution of Olympia oyster larvae in Fidalgo Bay, which is a Washington state priority restoration area. On four consecutive days in July 2017, we collected and analyzed Olympia oyster larvae from four depths over the tidal cycle in combination with temperature and chlorophyll-a measurements. We also measured current velocities profiles in the main channel. Mixed effects modelling results indicate that larvae were distributed significantly shallower when current speeds exceeded ~25 cm s-1 and were deeper when currents were below ~25 cm s-1, but it is unclear whether distribution was due to passive or active larval movement. If larvae were behaviorally controlling their depth, they did not distribute at depth-specific temperature or chlorophyll-a conditions. Larvae did not perform tidally-timed vertical migrations and it remains unclear whether larvae exhibited an ontogenetic vertical migration strategy. Fidalgo Bay does not exhibit a two-way flow or strong vertical shear, so Olympia oyster larval vertical distribution likely has little to no effect on their transport through the main channel of the bay. These results should not be generalized to other restoration areas due to the unique conditions of this location and the possibility of larval behavioral plasticity between distinct populations of Olympia oysters. Results can inform a Fidalgo Bay larval transport model to predict dispersal patterns and prioritize Olympia oyster restoration efforts.

Download or read book Surveys for Olympia Oysters Ostrea Lurida Carpenter 1864 at Six Index Sites in British Columbia 2010 to 2021 written by Erin C. Herder and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Report on the Progress of Management Plan Implementation for the Olympia Oyster Ostrea Lurida in Canada for the Period 2009 2015 written by L. M. Stanton and published by . This book was released on 2017 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt: "The Olympia Oyster (Ostrea lurida) was listed as a species of Special Concern under the Species at Risk Act in 2003. The Management Plan for the Olympia Oyster (Ostrea conchaphila1) was finalized and published on the Species at Risk Public Registry in 2009. The main threats identified for the Olympia Oyster include: human alteration of habitat, inadvertent introduction of non-native predators and parasites, vulnerability to human pollution (pulp mill effluents and possibly anti-fouling paints), and historic over harvesting. This report documents the progress of Management Plan implementation for the Olympia Oyster in Canada for the period 2009-2015. It summarizes progress that Fisheries and Oceans Canada and the broader scientific community have made towards achieving the goal and objective set out in the Management Plan"--Executive summary, p. ii.

Download or read book Native Oyster of British Columbia Ostrea Lurida Carpenter written by Joseph Stafford and published by . This book was released on 1917 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: