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Stream biofilm response to nutrient enrichment in urbanizing streams: nutrient diffusing substrate bioassay
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Created: Jul 10, 2016 at 2:43 a.m.
Last updated: Jul 05, 2018 at 6:36 p.m.
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Abstract

This resource contains the results of an experiment to test the effects of nutrients on stream biofilms at montane and urban sites in the Logan River, Red Butte Creek, and Middle Provo River watersheds located in northern Utah. We tested the effects of individual nitrogen and phosphorus additions and combined nitrogen and phosphorus additions at a series of concentrations on biofilm biomass using nutrient diffusing substrates (NDS). The Word document "methods_NDS" describes the methods used to construct the NDS and treatments included in our experiment.

At the end of the deployment period, biofilms grown on NDS were frozen. We measured chlorophyll a on half of the replicates and measured ash-free dry mass on the other half. The CSV file “biomass_nutrients_NDS” contains summary statistics (mean, standard deviation, count) of chlorophyll a concentrations and ash-free dry mass of biofilms on each nutrient treatment at our study sites. The Word document “methods_NDS” describes the analytical methods used to measure chlorophyll and ash-free dry mass.

We collected water column samples at each site for total and dissolved nutrient analyses. The CSV file “biomass_nutrients_NDS” contains total nitrogen, total phosphorus, ammonium, nitrate, and soluble reactive phosphorus concentrations at each site. The Word document “methods_NDS” describes the analytical methods used to measure nutrient concentrations.

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Coverage

Spatial

Coordinate System/Geographic Projection:
WGS 84 EPSG:4326
Coordinate Units:
Decimal degrees
North Latitude
41.9615°
East Longitude
-110.8809°
South Latitude
40.4010°
West Longitude
-111.9795°

Temporal

Start Date:
End Date:

Content

Additional Metadata

Name Value
Observed variables in "biomass_nutrients_NDS" CSV file chlorophyll a concentration (chl; mg/m2), ash-free dry mass (g/m2),total nitrogen (TN; mg N/L), total phosphorus (TP; mg P/L), ammonium (NH4-N; mg NH4-N/L), nitrate (NO3-N; mg NO3-N+NO2-N/L), soluble reactive phosphorus (SRP; mg SRP-P/L)

Credits

Funding Agencies

This resource was created using funding from the following sources:
Agency Name Award Title Award Number
National Science Foundation iUTAH-innovative Urban Transitions and Aridregion Hydro-sustainability 1208732

How to Cite

Ogata, E., M. Baker (2018). Stream biofilm response to nutrient enrichment in urbanizing streams: nutrient diffusing substrate bioassay, HydroShare, http://www.hydroshare.org/resource/6612b5beff044810b83d56c4db451a85

This resource is shared under the Creative Commons Attribution CC BY.

 http://creativecommons.org/licenses/by/4.0/
CC-BY

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