gov.noaa.nmfs.inport:20550
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dataset
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Northwest Fisheries Science Center
206-860-3200
2725 Montlake Boulevard East
Seattle
WA
98112
USA
http://www.nwfsc.noaa.gov
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Website
Website for this organization
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resourceProvider
Northwest Fisheries Science Center
206-860-3200
2725 Montlake Boulevard East
Seattle
WA
98112
nmfs.nwfsc.metadata@noaa.gov
http://www.nwfsc.noaa.gov
WWW:LINK-1.0-http--link
NWFSC Home
Website listed for Northwest Fisheries Science Center
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pointOfContact
2024-02-29T00:00:00
ISO 19115-2 Geographic Information - Metadata Part 2 Extensions for imagery and gridded data
ISO 19115-2:2009(E)
Master Dataset for Elwha Carcass Addition Experiment - Elwha River salmon carcass addition experiment
Biota (Elwha River salmon carcass addition experiment)
2007-08-15
creation
2018-10-01
publication
NOAA/NMFS/EDM
20550
https://www.fisheries.noaa.gov/inport/item/20550
WWW:LINK-1.0-http--link
Full Metadata Record
View the complete metadata record on InPort for more information about this dataset.
information
Morley, Sarah
206-860-6780
2725 Montlake Boulevard East
Seattle
WA
98112
Sarah.Morley@noaa.gov
originator
https://www.webapps.nwfsc.noaa.gov/apex/parrdata/inventory/datasets/dataset/2045
WWW:LINK-1.0-http--link
Master Dataset for Elwha Carcass Addition Experiment
NWFSC Dataset Information page. All datasets related to Elwha River carcass addition experiment. Includes physical habitat, chemical, and biological data.
download
tableDigital
Dam removal and other fish-barrier removal projects in western North America are assumed to boost freshwater productivity via the transport of marine-derived nutrients from recolonizing Pacific salmon (Oncorhynchus spp). In anticipation of the removal of two hydroelectric dams on the Elwha River in Washington State, we tested this hypothesis with a salmon carcass addition experiment. Our study was designed to examine how background nutrient dynamics and benthic foodwebs vary seasonally, and how these features respond to salmon subsidies. We conducted our experiment in six side channels of the Elwha River, each with a spatially paired reference and treatment reach. Each reach was sampled on multiple occasions from October 2007 to August 2008, before and after carcass placement. We evaluated nutrient limitation status, measured water chemistry, periphyton, benthic invertebrates, and juvenile rainbow trout (O. mykiss) response, and traced salmon-derived nutrient uptake using stable isotopes. Outside of winter, algal accrual was limited by both nitrogen and phosphorous and remained so even in the presence of salmon carcasses. One month after salmon addition, dissolved inorganic nitrogen levels doubled in treatment reaches. Two months after addition, benthic algal accrual was significantly elevated. We detected no changes in invertebrate or fish metrics, with the exception of 15N enrichment. Natural seasonal variability was greater than salmon effects for the majority of our response metrics. Yet seasonality and synchronicity of nutrient supply and demand are often overlooked in nutrient enhancement studies. Timing and magnitude of salmon-derived nitrogen uptake suggest that uptake of dissolved nutrients were favored over direct consumption of carcasses. The highest proportion of salmon-derived nitrogen was incorporated by herbivores (18–30%) and peaked 1–2 months after carcass addition. Peak nitrogen enrichment in predators (11–16%) occurred 2–3 months after addition. All taxa returned to background d15N levels by 7 months. Since this study was conducted, both dams on the Elwha River were removed over 2011-2014 to open over 90% of the basin to anadromous fishes. We anticipate that as the full portfolio of salmon species expand through the basin, nutrient supply and demand will become more balanced and positive feedback loops of reciprocal nutrient transfer reinforced.
All datasets related to Elwha River carcass addition experiment. Includes physical habitat, chemical, and biological data.
Raw/field data, Laboratory data
completed
Morley, Sarah
206-860-6780
2725 Montlake Boulevard East
Seattle
WA
98112
Sarah.Morley@noaa.gov
pointOfContact
Morley, Sarah
206-860-6780
2725 Montlake Boulevard East
Seattle
WA
98112
Sarah.Morley@noaa.gov
custodian
Elwha River
aquatic invertebrate
dam removal
effectiveness monitoring
floodplain
food web
habitat
marine derived nutrients
nutrient enrichment
periphyton
salmon
side channel
stable isotopes
theme
Instrument Not Applicable
instrument
Animal and Plant Collection Device
Bottom Sampler
platform
DOC/NOAA/NMFS/NWFSC > Northwest Fisheries Science Center, National Marine Fisheries Service, NOAA. U.S. Department of Commerce
dataCentre
Global Change Master Directory (GCMD) Data Center Keywords
2017-04-24
publication
8.5
FE Legacy Data Sets
project
InPort
otherRestrictions
Cite As: Northwest Fisheries Science Center, [Date of Access]: Master Dataset for Elwha Carcass Addition Experiment - Elwha River salmon carcass addition experiment [Data Date Range], https://www.fisheries.noaa.gov/inport/item/20550.
NOAA provides no warranty, nor accepts any liability occurring from any incomplete, incorrect, or misleading data, or from any incorrect, incomplete, or misleading use of the data. It is the responsibility of the user to determine whether or not the data is suitable for the intended purpose.
otherRestrictions
Access Constraints: NA
unclassified
NOAA Data Management Plan (DMP)
NOAA/NMFS/EDM
20550
https://www.fisheries.noaa.gov/inportserve/waf/noaa/nmfs/nwfsc/dmp/pdf/20550.pdf
WWW:LINK-1.0-http--link
NOAA Data Management Plan (DMP)
NOAA Data Management Plan for this record on InPort.
information
crossReference
eng; US
oceans
Spreadsheet
-123.7579
-123.3293
47.6658
48.1502
Elwha River: Lower and middle Elwha River basin
2007-08-01
2008-08-30
Subject to Public Access to Research Results (PARR): Yes
Presentation: Transfer of marine-derived salmon nutrients to freshwater food webs: predicted response of primary and secondary producers to dam removal on the Elwha River (Washington state), USA. Talk given at the 5th World Fisheries Congress, Yokohoma, Japan
Presentation: Effects of salmon carcasses on riverine food webs in experimental field study on the Elwha River. Talk given at 81st Annual Meeting of the Northwest Scientific Association, Seattle, WA
false
eng
false
Spreadsheet
Elwha Carcass Addition
2018-10-01
publication
Northwest Fisheries Science Center
206-860-3200
2725 Montlake Boulevard East
Seattle
WA
98112
nmfs.nwfsc.metadata@noaa.gov
http://www.nwfsc.noaa.gov
WWW:LINK-1.0-http--link
NWFSC Home
Website listed for Northwest Fisheries Science Center
information
distributor
https://www.webapps.nwfsc.noaa.gov/apex/parrdata/inventory/tables/table/elwha_carcass_addition
WWW:LINK-1.0-http--link
Elwha Carcass Addition
Master table of all datasets collected as part of Elwha River carcass addition experiment.
download
https://www.webapps.nwfsc.noaa.gov/apex/parr/elwha_carcass_addition/data/page/
WWW:LINK-1.0-http--link
Elwha Carcass Addition (RESTful)
Master table of all datasets collected as part of Elwha River carcass addition experiment.
download
dataset
Accuracy
Medium
Invertebrates identified and enumerated under microscopy, chlorophyll samples analyzed by fluormeter, isotope samples analyzed in mass spec