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Ecosystem Development Variations in a Pacific Northwest Tidal Wetland Restoration Project (Janousek et al, 2021)

2022-06-28T13:43:59+00:00

Tidal wetland restoration through dike removal can enhance coastal ecosystem services, such as flood attenuation, fish production, and carbon sequestration. However, landscape-level heterogeneity may influence recovery. For a 169-ha restoration project in Tillamook Bay, Oregon, we hypothesized that areas of more intensive pre-restoration land use/land cover (cropping, grazing) would differ more from reference conditions before restoration than less-intensive uses and that initial post-restoration recovery would vary by land-use/land-cover type and wetland elevation. Before the restoration, the project site overall had higher nonnative plant cover, lower elevation and groundwater levels, and lower soil pH than reference high marsh, with some [...]

Ecosystem Development Variations in a Pacific Northwest Tidal Wetland Restoration Project (Janousek et al, 2021)2022-06-28T13:43:59+00:00

2019 12-Year Assessment of the State of Oregon Coast Coho Conservation Plan (OR Fish & Wildlife Commission, 2021)

2022-06-28T13:47:00+00:00

The Oregon Coast Coho Conservation Plan was approved by the Oregon Fish and Wildlife Commission in 2007 as the State of Oregon’s conservation and management plan for the Oregon Coast Evolutionarily Significant Unit of coho salmon (OC Coho ESU). The plan provides a conservation framework for attaining a broad sense desired status at which Oregon Coast coho salmon will be sufficiently abundant, productive, and diverse to be self-sustaining, and provide significant environmental, cultural, and economic benefits. Broad sense goals are long-term ambitions (~50 years) expected to be attained after sustained conservation actions and investments in habitat protection and restoration. [...]

2019 12-Year Assessment of the State of Oregon Coast Coho Conservation Plan (OR Fish & Wildlife Commission, 2021)2022-06-28T13:47:00+00:00

2019 State of Oregon Coast Coho 12 Year Assessment, Appendix IV (OR Fish & Wildlife Commission, 2021)

2022-06-28T13:47:09+00:00

A number of regulatory mechanisms protect Oregon Coast coho salmon and their habitat. However, Oregon believes that regulatory mechanisms are just one tool (or one type of strategy and action) to address limiting factors. Regulatory approaches to habitat restoration and protection have limitations and are not the only tool. Oregon believes that the combination of non-regulatory/regulatory mechanisms and a focus on building partnerships is much more effective in the long term than simply relying on regulation. The following is a summary of state regulatory and non-regulatory programs, linked to salmonid habitat limiting factors. VIEW PDF

2019 State of Oregon Coast Coho 12 Year Assessment, Appendix IV (OR Fish & Wildlife Commission, 2021)2022-06-28T13:47:09+00:00

2019 State of Oregon Coast Coho 12 Year Assessment, Appendix III (OR Fish & Wildlife Commission, 2021)

2022-06-28T13:47:15+00:00

Separate from the OCCCP, the Oregon Coast Workgroup of the Oregon and Northern California Coasts Technical Recovery Team (TRT) developed a formal decision support framework for assessing the biological status of the OC Coho ESU with respect to listing under the federal Endangered Species Act (ESA; Wainwright et al. 2008).1 This framework, the Oregon Coast Coho Decision Support System (DSS), integrates numerous metrics from multiple monitoring projects and data analyses into a logical basis for decisions regarding the biological status of the OC Coho ESU. VIEW PDF

2019 State of Oregon Coast Coho 12 Year Assessment, Appendix III (OR Fish & Wildlife Commission, 2021)2022-06-28T13:47:15+00:00

2019 State of Oregon Coast Coho 12 Year Assessment, Appendix II (OR Fish & Wildlife Commission, 2021)

2022-06-28T13:47:24+00:00

The Oregon Coast Coho Conservation Plan (OCCCP) includes measurable criteria for assessing of the status of Independent Populations of Oregon Coast coho salmon (OC Coho) relative to broad sense goals. The persistence criterion for Independent Populations requires the use of quantitative models to estimate the probability that populations will persist for the next 100 years. To evaluate this criterion, population viability analysis (PVA) models are used to estimate population-scale extinction risk over a 100-year time frame, and the probability of persistence is calculated as one minus the extinction risk. Population viability analysis includes a variety of quantitative analyses to [...]

2019 State of Oregon Coast Coho 12 Year Assessment, Appendix II (OR Fish & Wildlife Commission, 2021)2022-06-28T13:47:24+00:00

2019 State of Oregon Coast Coho 12 Year Assessment, Appendix I (OR Fish & Wildlife Commission, 2021)

2022-06-28T13:47:30+00:00

The Oregon Coast Coho Conservation Plan (OCCCP) provides criteria, metrics, and goals for abundance, persistence, productivity, distribution, diversity, and habitat condition. Criteria, metrics and goals for the Oregon Coast Coho Evolutionarily Significant Unit (OC Coho ESU) and Independent Populations are summarized below. Criteria, metrics and goals for Dependent Populations are described in Section II. Additional details can be found in OCCCP Appendix 2, Desired Status: Measurable Criteria for the Oregon Coast Coho Conservation Plan for the State of Oregon. VIEW PDF

2019 State of Oregon Coast Coho 12 Year Assessment, Appendix I (OR Fish & Wildlife Commission, 2021)2022-06-28T13:47:30+00:00

Relationship Between Hydro-regime and Coho Salmon Redd Construction in the Smith River, Oregon (Butler et al, 2021)

2022-06-28T13:49:41+00:00

Adult salmonid migration to natal habitats and spawning are affected both by physiological factors and environmental conditions. While research has focused on physiological thresholds that influence the initiation of migration, few studies have investigated the relationship between both hydrological and thermal conditions and salmon spawning throughout the course of the reproductive period. We examined whether Oregon coastal coho salmon (Oncorhynchus kisutch) returning to three tributaries of the Smith River watershed (in the central Oregon Coast Range) responded to the stream hydroregime throughout their spawning period. Generalised linear mixed models were constructed to evaluate relationships between various stream discharge metrics, [...]

Relationship Between Hydro-regime and Coho Salmon Redd Construction in the Smith River, Oregon (Butler et al, 2021)2022-06-28T13:49:41+00:00

Juvenile Coho Salmon Movement, Growth & Survival (Bell, 2021)

2022-06-28T13:50:14+00:00

Juvenile salmonids display highly variable spatial and temporal patterns of early dispersal that are influenced by density-dependent and density-independent factors. Although juvenile coho salmon (Oncorhynchus kisutch) movement patterns in streams and their relationship with body mass and growth have been examined in previous studies, most observations were limited to one season or one stream section. In this study, we monitored the movement of juvenile coho salmon throughout their period of residence in a coastal basin to identify prevalent dispersal strategies and their relationships with body mass, growth rates and survival. Our results revealed seasonally and spatially variable movement patterns. [...]

Juvenile Coho Salmon Movement, Growth & Survival (Bell, 2021)2022-06-28T13:50:14+00:00

How Value Conflicts Infected the Science of Riparian Restoration for Endangered Salmon Habitat the Pacific Northwest (Chapman et al, 2020)

2022-06-28T13:44:20+00:00

Conservation policy relies on input from science, yet scientists are often frustrated by the ‘gap’ between their recommendations and policy decisions. In this paper we examine one such ‘gap’: how a long-standing conflict of values functioned to ‘infect’ the synthesis and application of riparian science for salmon habitat restoration projects. We do this by analysis of a policy debate over the required minimum width of riparian buffers in voluntary conservation programs on agricultural lands in the Puget Sound region of Washington State. Based on an analysis of expert interviews and document analysis, we first outline the key features of [...]

How Value Conflicts Infected the Science of Riparian Restoration for Endangered Salmon Habitat the Pacific Northwest (Chapman et al, 2020)2022-06-28T13:44:20+00:00

Identification of Historical Populations of Coho Salmon (NOAA, 2020)

2022-06-28T13:45:49+00:00

In 2003 the Oregon Workgroup (Workgroup) of the Oregon Northern California Coast Technical Recovery Team (TRT) convened to review and analyze information that could shed light on historical populations of Oregon Coast coho salmon (Oncorhynchus kisutch). This document presents the preliminary conclusions of the Workgroup. A historical perspective describing how these populations functioned is an important first step in assessing the viability of present-day populations, in developing delisting criteria, and as an overall recovery strategy. VIEW PDF

Identification of Historical Populations of Coho Salmon (NOAA, 2020)2022-06-28T13:45:49+00:00

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