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

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

Comparing Historical Losses of Forested, Scrub-shrub, & Emergent Tidal Wetlands on the Oregon Coast (Brophy, 2019)

2022-06-28T13:40:38+00:00

This study evaluated historical extent (prior to European settlement), current extent, and losses for each of the three major tidal wetland types (emergent, scrub-shrub, and forested) on the Oregon coast. The first study of its kind on the Oregon coast, it produced results vital to conservation and restoration planning, since these wetland types are often targets for restoration and each type supplies unique ecosystem services. The study included the coast's 15 largest estuaries; they contain 96.5% of the coast's historical tidal wetland area, so results are representative of the coast in general. VIEW PDF

Comparing Historical Losses of Forested, Scrub-shrub, & Emergent Tidal Wetlands on the Oregon Coast (Brophy, 2019)2022-06-28T13:40:38+00:00

Stream Conditions after 18 Years of Passive Riparian Restoration in Small Fish-Bearing Watersheds (Martens et al, 2019)

2022-06-28T13:42:22+00:00

Many of the ecological processes in the riparian forests and streams across the Pacific Northwest have become impaired through production forestry practices common prior to the 1990s. Some of these practices included forest harvest without stream buffers, removal of instream wood, road construction and use, and harvesting large proportions of watersheds. Passive ecological restoration (the use of natural processes of succession and disturbance to alleviate anthropogenic impacts over time) is a common practice used in the management of riparian forests previously subjected to production forestry. Eighteen years after the implementation of passive restoration of riparian forests, we used four [...]

Stream Conditions after 18 Years of Passive Riparian Restoration in Small Fish-Bearing Watersheds (Martens et al, 2019)2022-06-28T13:42:22+00:00

Insights into Estuary Habitat Loss in Western U.S. (Brophy et al, 2019)

2022-06-28T13:42:57+00:00

Effective conservation and restoration of estuarine wetlands require accurate maps of their historical and current extent, as well as estimated losses of these valued habitats. Existing coast-wide tidal wetland mapping does not explicitly map historical tidal wetlands that are now disconnected from the tides, which represent restoration opportunities; nor does it use water level models or high-resolution elevation data (e.g. lidar) to accurately identify current tidal wetlands. To better inform estuarine conservation and restoration, we generated new maps of current and historical tidal wetlands for the entire contiguous U.S. West Coast (Washington, Oregon, and California). The new maps are [...]

Insights into Estuary Habitat Loss in Western U.S. (Brophy et al, 2019)2022-06-28T13:42:57+00:00

Ecological Effects of Tide Gate Upgrade or Removal (Oregon Watershed Enhancement Board, 2018)

2022-06-28T13:40:31+00:00

This document reports on findings, conclusions and recommendations derived from scientific literature and knowledge regarding the effectiveness of tide gate removal or upgrade in improving conditions for Oregon’s native migratory fish species, particularly salmonids, and other plant and animal species that utilize estuarine ecosystems. The project was commissioned by the Oregon Watershed Enhancement Board (OWEB) to foster better understanding of the effectiveness of their past investments in estuary habitat restoration involving tide gates, and to aid in targeting future investments. This will be especially important because many less-complicated projects (e.g. those on public land, smaller, single-action projects, those with [...]

Ecological Effects of Tide Gate Upgrade or Removal (Oregon Watershed Enhancement Board, 2018)2022-06-28T13:40:31+00:00

A Process‐Based Approach to Restoring Depositional River Valleys (Powers et al, 2018)

2022-06-28T13:40:46+00:00

Stream restoration approaches most often quantify habitat degradation, and therefore recovery objectives, on aquatic habitat metrics based on a narrow range of species needs (e.g., salmon and trout), as well as channel evolution models and channel design tools biased toward single‐threaded, and “sediment‐balanced” channel patterns. Although this strategy enhances perceived habitat needs, it often fails to properly identify the underlying geomorphological and ecological processes limiting species recovery and ecosystem restoration. In this paper, a unique process‐based approach to restoration that strives to restore degraded stream, river, or meadow systems to the premanipulated condition is presented. The proposed relatively simple [...]

A Process‐Based Approach to Restoring Depositional River Valleys (Powers et al, 2018)2022-06-28T13:40:46+00:00

Methods to Predict Beaver Dam Occurrence in Coastal Oregon (Petro et al, 2018)

2022-06-28T13:41:01+00:00

Pools provided by beaver (Castor canadensis) contribute to critical habitat requirements of salmonids in fluvial systems of the Pacific Northwest, therefore more land managers are interested in managing watersheds that include beavers or engaging in beaver-related restoration projects. We evaluated the utility of applying an existing beaver habitat suitability model to better understand beaver dam site characteristics in coastal Oregon, identify optimum dam site locations, and guide future beaver-related restoration efforts. We used a combination of t-tests, Wilcoxon rank sum tests, and a stepwise discriminant function analysis to examine stream habitat associations with field data collected at known and [...]

Methods to Predict Beaver Dam Occurrence in Coastal Oregon (Petro et al, 2018)2022-06-28T13:41:01+00:00

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