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The re-use of scientific data has the potential to greatly increase communication, collaboration and synthesis within and among disciplines, and thus is fostered, supported and encouraged. Permission to use this dataset is granted to the Data User free of charge subject to the following terms:

1) Acceptable use. Use of the dataset will be restricted to academic, research, educational, government, recreational, or other not-for-profit professional purposes. The Data User is permitted to produce and distribute derived works from this dataset provided that they are released under the same license terms as those accompanying this Data Set. Any other uses for the Data Set or its derived products will require explicit permission from the dataset owner.
2 ) Redistribution. The data are provided for use by the Data User. The metadata and this license must accompany all copies made and be available to all users of this Data Set. The Data User will not redistribute the original Data Set beyond this collaboration sphere.
3 ) Citation. It is considered a matter of professional ethics to acknowledge the work of other scientists. Thus, the Data User will properly cite the Data Set in any publications or in the metadata of any derived data products that were produced using the Data Set. Citation should take the following general form: Creator, Year of Data Publication, Title of Dataset, Publisher, Dataset identifier. For example:

Shaver, G. 1989. Above ground biomass in acidic tussock tundra experimental site, 1989, Arctic LTER, Toolik, Alaska. Arctic LTER, Marine Biological Lab, Woods Hole, Ma 02543. 1989gsttbm http://ecosystems.mbl.edu/arc/terrest/biomass/index.shtml 

4 ) Acknowledgement. The Data User should acknowledge any institutional support or specific funding awards referenced in the metadata accompanying this dataset in any publications where the Data Set contributed significantly to its content. Acknowledgements should identify the supporting party, the party that received the support, and any identifying information such as grant numbers. For example:

Data sets were provided by the Arctic LTER. This material is based upon work supported by the National Science Foundation under Grants #DEB-981022, 9211775, 8702328; #OPP-9911278, 9911681, 9732281, 9615411, 9615563, 9615942, 9615949, 9400722, 9415411, 9318529; #BSR 9019055, 8806635, 8507493.

5 ) Notification. The Data User will notify the Data Set Contact when any derivative work or publication based on or derived from the Data Set is distributed. The Data User will provide the data contact with two reprints of any publications resulting from use of the Data Set and will provide copies, or on-line access to, any derived digital products. Notification will include an explanation of how the Data Set was used to produce the derived work.
6 ) Collaboration. The Data Set has been released in the spirit of open scientific collaboration. Data Users are thus strongly encouraged to consider consultation, collaboration and/or co-authorship with the Data Set Creator.

By accepting this Data Set, the Data User agrees to abide by the terms of this agreement. The Data Owner shall have the right to terminate this agreement immediately by written notice upon the Data User's breach of, or non-compliance with, any of its terms. The Data User may be held responsible for any misuse that is caused or encouraged by the Data User's failure to abide by the terms of this agreement.

Disclaimer

While substantial efforts are made to ensure the accuracy of data and documentation contained in this Data Set, complete accuracy of data and metadata cannot be guaranteed. All data and metadata are made available "as is". The Data User holds all parties involved in the production or distribution of the Data Set harmless for damages resulting from its use or interpretation.

Dataset URLs:METADATA: HTML, Rich Text, XML(EML compliant)
DATA: Comma Delimited, Excel file with Metadata and data, Dataset via LTER Data Poral
Dataset ID:LTERKupMoss.02
Dataset Title:Moss point transect data for the Kuparuk River near Toolik Field Station, Alaska 1993-2012.
Investigator 1: 
First Name:Breck
Last Name:Bowden
Organization:University of Vermont
Address line 2:303D Aiken Center
Address line 3:Rubenstein School of Environment and Natural Resources
City:Burlington
State:Vermont
Zip Code:05405
Country:USA
Investigator 2: 
First Name:Bruce
Last Name:Peterson
Organization:Marine Biological Laboratory
Address line 2:7 MBL St.
Address line 3:The Ecosystems Center
City:Woods Hole
State:MA
Zip Code:02543
Country:USA
Investigator 3: 
First Name:Linda
Last Name:Deegan
Organization:Marine Biological Laboratory
Address line 2:7 MBL St.
Address line 3:The Ecosystems Center
City:Woods Hole
State:MA
Zip Code:02543
Country:USA
Investigator 4: 
First Name:Alex
Last Name:Huryn
Organization:University of Alabama
Address line 2:
Address line 3:
City:Tuscaloosa
State:AL
Zip Code:
Country:USA
Investigator 5: 
First Name:Elissa
Last Name:Schuett
Organization:University of Vermont
City:Burlington
State:Vermont
Country:USA
Investigator 6: 
First Name:Adrian
Last Name:Green
Organization:
Address line 2:
Address line 3:
City:
State:
Zip Code:
Country:
Investigator 7: 
First Name:Karie
Last Name:Slavik
Associate Investigators:
Keywords:bryophytes, algae, mosses, primary productivity, Kuparuk River
Abstract:This file contains the consolidated data for percent cover of dominant bryophytes and other easilty idenfiable macro-algae in the experimental reaches of the Kuparuk River beginning in 1993 and updated annually. In some years percent cover was recorded more than one time per seaon. In all years percent cover was recorded in riffle habitats and in some (early) years percent cover was recorded for pool habitats. Moss point transects have been done on the Kuparuk since 1993.
For questions about the Metadata and data contact the Investigators.
For information about this web site contact:
Arctic LTER Information Manager
The Ecosystems Center
Marine Biological Lab
7 MBL St
Woods Hole, MA 02543
Phone (508) 289 7496
Email: arc_im@mbl.edu
Online URL: http://ecosystems.mbl.edu/ARC/
DATA FILE INFORMATION:
Data File URL http://metacat.lternet.edu/das/dataAccessServlet?docid=knb-lter-arc.10317&urlTail=streams/stream_chemistry/data/1993-2012_Kuparuk_Moss.csv
Data File Name 1993-2012_Kuparuk_Moss
Beginning Date 6/23/1993
End Date 8/2/2012
Number of Data Records 4618
Other Files to Reference mopt_oks.01, mopt_other.01
Availability Status Type 1
Quality Control Information Field technicians were trained annually by the PI or by an experienced field technician. Typically the data were recorded in the field by two individuals, usually but not always the data were transcribed to a PC by two individuals. Data transcription was checked by random sample of raw notes. Data translation and summarization was done entirely within Excel. Final summarized data were checked across sites for a year and then across years to ensure they were internaly self consistent.
Maintenance Description Individual annual files were consolidated into this file in Novermber 2007. At this time a data check was done to ensure that the transfer was accurate. Future addtions to the the same data file should reference this metadata file, with updates as needed.
Log of Changes: 3/2013: EBS organized metadata and data into this file.
4/2013: JPB moved to new spreadsheet and updated Research Locations.
Version 2: Checked keywords against the LTER network preferred list and replaced non-preferred terms. Jim L 15Jan14; 1/2014: 2011 and 2012 Data added JPB
 
RESEARCH LOCATION:                          
Location Name Kuparuk -0.47k Kuparuk -0.3k Kuparuk -0.177k Kuparuk 0.0k Kuparuk 0.3k Kuparuk 0.56k Kuparuk 0.74k Kuparuk 1.0k Kuparuk 1.8k Kuparuk 2.0k Kuparuk 3.0k Kuparuk 4.0k  
Geographic Description Kuparuk River, North Slope of Alaska, reference reach, upstream of the fertilized reach. Kuparuk River, North Slope of Alaska, reference reach, upstream of the fertilized reach. Kuparuk River, North Slope of Alaska, reference reach, upstream of the fertilized reach. Kuparuk River, North Slope of Alaska. Current site of phosphorous addition. Kuparuk River, North Slope of Alaska, re-fertilized reach, formerly the recovery reach after historic fertilization. Kuparuk River, North Slope of Alaska, re-fertilized reach, formerly the recovery reach after historic fertilization. Kuparuk River, North Slope of Alaska, re-fertilized reach, formerly the recovery reach after historic fertilization. Kuparuk River, North Slope of Alaska, re-fertilized reach, formerly the recovery reach after historic fertilization. Kuparuk River, North Slope of Alaska, fertilized reach. Kuparuk River, North Slope of Alaska, fertilized reach. Kuparuk River, North Slope of Alaska, fertilized reach. Kuparuk River, North Slope of Alaska, fertilized reach.  
Location Bounding Box                          
West Bounding Coordinate                          
East Bounding Coordinate                          
North Bounding Coordinate                          
South Bounding Coordinate                          
OR if single point location                          
Latitude 68.6374451277778 68.6383996472222 68.6380604555556 68.6391037472222 68.6407478666667 68.64205425 68.6431598416667 68.6446591138889 68.6478126416667 68.6495472222222 68.6536672416667 68.6587855777778  
Longitude -149.386685694444 -149.389229505556 -149.391843363889 -149.394325569444 -149.400561111111 -149.403500566667 -149.403267013889 -149.405160461111 -149.415654311111 -149.416152463889 -149.420855111111 -149.424464330556  
Elevation 753.32 752.799 750.601 750.566 747.744 746.268 746.552 744.061 738.873 737.074 732.173 726.919  
Link to Google Map View on Google Map View on Google Map View on Google Map View on Google Map View on Google Map View on Google Map View on Google Map View on Google Map View on Google Map View on Google Map View on Google Map View on Google Map  
                           
 
TAXONOMIC COVERAGE:
Organisms studied Bryophytes, algae
 
Methods:Study Site
General description (modified from Benstead et al. 2007): Fertilization of the Kuparuk River with P (added as H3PO4 via continuous dripper from mid-June to mid-August, fixed-rate with a target concentration of 0.3 µM at a nominal discharge of 2 m3/sec) started in the summer of 1983. The H3PO4 was added at an arbitrary point called 0.0 km, located 1.6 km upstream of the river crossing at the Dalton Highway (see Peterson et al., 1985 for early results of fertilization). In subsequent years, all points on the Kuparuk River were referenced relative to this datum. In 1985 the P dripper was moved 0.59 km downstream, forming the first Kuparukrecovery reach (enriched for the two previous summers, 1983-1984) between 0.0 km and 0.59 km. In 1996 the dripper was moved downstream a second time, to 1.4 km below the original dripper site. The reach between 0.59 km and 1.4 km became the second Kuparuk recovery reach (enriched for 13 consecutive summers, 1983-1995). See Slavik et al. (2004) for an summary of other relevant data the Kuparuk River long-term fertilization experiment.
The specific reaches represented in this data set come from the following general areas unless noted otherwise:
1992-1995
Fertilized from 0.59km to 18km
Reference from 0.5km to -9.5km
1996-2010
Fertilized from 1.6km to 6km
Recovery from 1km to 1.39km
Reference from -0.47 to 0.7km
2011-Present
Fertilized from 1.6km to 6km
Re-Fert 2 from 0.7km to 1.39km
Re-Fert 1 from 0km to 0.6km
Reference from -0.47 to -0.1km
Sampling Methods
Data were acquired using point transects (Bowden et al. 1994, Bowden et al. 2006). Typically five transects were established across the river at ever sampling station. The transect locations were not permanently monumented and so for sites that were revisited several times a year or over many years, the exact location of the transects vary somewhat. While useful information is contained in the individual transects, statistical comparisons should typically be based on the mean cover values for all transects done at a site as the fundamental reporting unit. At intervals of about 10 cm along each transect, we noted the nature of the plant cover on the cobbles. Three moss species (Schistidium [Grimmia] agassizii Sull. & Lesq. in Sull., a mixture of H. alpestre [Hedw.] Loeske and H. ochraceum [Turn.] Loeske, and Fontinalis neomexicana Sull. & Lesq.), one liverwort (Solenostoma sp.), and the macroalgae previously mentioned, could be identified easily by eye in the field and were recorded as being present or absent. In subsequent years, other easily recognizable cover categories were recorded (e.g. Lemanea spp., Phormidium spp.). Only one species was assigned to a point. For a typical river width of 15 m, each transect provided roughly 150 points or 750 points at each station. Species frequency was determined from the number of times each species was encountered, divided by the total number of points sampled in a transect. Only one species (or "bare") was recorded as present at any one point. “Bare” recordings in the field notes were assumed to consist of an epilithic biofilm of diatoms and other microalgae as reported by Miller et al. (1992) and are recorded in the database here as "Epilithic algae".
In different years slightly different river sites were sometimes measured. Any measured site is a representative sample of the reach from which it came. The dataset contains the "actual" station location information. However, to consolidate the data and facilitate comparisons among reaches and across years, the data from closely co-located actual stations has been aggregated

Data Table

Variable Name Variable Description Data Type Units DateTime Format Code Information Missing Value Code
Site Code LTER site code text        
River site of measurement (named) text        
Date Date datetime   dd-mmm-yy    
Station (km) Distance from original N and P dripper, in kilometers. Negative numbers indicate sites upstream from fertilization, postive numbers are downstream. text        
1985 P-dripper location Treatment reach based on the location of the dripper in 1985 (reference, recovery, or fertilized) text        
1996 P-dripper location Treatment reach based on the location of the dripper in 1996 (reference, recovery, or fertilized) text        
2011 P-Dripper location Treatment reach based on the location of the dripper in 2011 (reference, re-fert 1, re-fert 2, or fertilized) text        
Period Time during the summer (early, mid, late). text        
Habitat (sub-site) reach type text        
Species/Cover type species or cover description text        
Mean (% AVERAGE) average percent cover text        
SE standard error of %mean cover/species type text        
n number of transects in %mean cover/species type text        
Comments Notes about the data text        
Please contact arc_im@mbl.edu with questions, comments, or for technical assistance regarding this web site.