Title:

Trask River Watershed Study: Fine benthic material sampling, 2008-2016

Author(s):

Johnson, Sherri L.; Ashkenas, Linda R.

Publication Year:

2022

How to Cite:

These data were collected using funding from the U.S. Government and can be used without additional permissions or fees. If you use these data in a publication, presentation, or other research product please use the following citation:

Johnson, Sherri L.; Ashkenas, Linda R. 2022. Trask River Watershed Study: Fine benthic material sampling, 2008-2016. Fort Collins, CO: Forest Service Research Data Archive. https://doi.org/10.2737/RDS-2022-0003

Abstract:

These data are a portion of the larger Trask River Watershed Study which was conducted in the East Fork of the South Fork Trask River of the Coast Range of western Oregon. Basin-wide surveys of fine benthic particulates were conducted over the course of this study. In-stream deposition of fine sediments (< 1 millimeter) was quantified annually, during early summer. Samples were analyzed for standing stocks of the organic and inorganic fraction of surface and shallow subsurface materials. These surveys were conducted before and after land use treatments to provide insights into local and downstream effects.

The Trask River Watershed study area consists of 4 large catchments: Pothole Creek, Gus Creek, Rock Creek, and Upper Main Trask. Within each of the four catchments, 2-4 headwater sites and a downstream site were sampled. In general, Trask River Watershed study data were collected during pre-harvest (2006-2011) and post-harvest (2013-2016) periods, from treated and reference headwater watersheds and from downstream sites. Sample reaches were 30 meters in length for headwater streams and 100 meters for downstream sites. Sampling for the fine benthic material began for all sites in June 2008, and continued annually in mid-June until 2016. Three replicates were taken from each headwater site and five from the downstream sites. For each replicate, a 15 centimeter diameter core was used to collect a surface sample and a subsurface sample (2-5 cm deep) from the streambed. The depth of the water within the core was measured to calculate the total volume present. For samples collected 2013-2016, a second depth measurement was recorded for the subsurface sample. After field collection, samples were taken to the lab and frozen. During processing, samples were thawed, filtered, dried, and ashed to calculate standing stocks of fine organic and inorganic material.

Keywords:

benthic material; forest-stream interactions; aquatic ecosystems; streams; biomass; detritus; fine particulates; organic material; sediment; headwaters; downstream sites; environment; geoscientificInformation; inlandWaters; Ecology, Ecosystems, & Environment; Hydrology, watersheds, sedimentation; Forest & Plant Health; Air, soil, water pollution (environmental injury); Inventory, Monitoring, & Analysis; Assessments; Biometrics; Monitoring; Oregon; Trask River; Trask basin study area

Related publications:

• Johnson, Sherri L.; Li, Judith L.; Sobota, Janel B.; Ashkenas, Linda R.; Pollock, Amanda M.; Meleason, Mark A.; Ganio, Lisa. 2022. Macroinvertebrate responses to differing riparian treatments following forest harvest in the headwaters of Trask River watershed. Forest Ecology and Management. 508: 119999. https://doi.org/10.1016/j.foreco.2021.119999
• Johnson, Sherri L.; Ashkenas, Linda R. 2022. Trask River Watershed Study: Epilithic algal biomass and chlorophyll a concentrations, 2006-2016. Fort Collins, CO: Forest Service Research Data Archive. https://doi.org/10.2737/RDS-2022-0001
• Johnson, Sherri L.; Ashkenas, Linda R. 2022. Trask River Watershed Study: Stream chemistry, 2006-2016. Fort Collins, CO: Forest Service Research Data Archive. https://doi.org/10.2737/RDS-2022-0002
• More (6 total)

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