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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.

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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:2010_LG_pitfall.03
Dataset Title:Abundance of major taxonomic groups of invertebrates (arthropods and gastropods) collected with pitfall traps at four sites near Toolik Field Station Arctic LTER, Alaska in the summer of 2010.
Investigator 1: 
First Name:Laura
Last Name:Gough
Organization:University of Texas at Arlington
Address line 2:Box 19498
Address line 3:Department of Biology
City:Arlington
State:Texas
Zip Code:76019
Country:USA
Investigator 2: 
First Name:Matt
Last Name:Rich
Organization:
Address line 2:
Address line 3:
City:
State:
Zip Code:
Country:
Investigator 3: 
First Name:Ashley
Last Name:Asmus
Associate Investigators:
Keywords:invertebrates, arthropods, insects, spider, pitfall traps, Imnaviat, Toolik, teambird, gastropods, Sagavanirktok River, Roche Moutonnee
Abstract: Invertebrates (spiders, insects and slugs) were collected weekly using pitfall traps at four sites near the Arctic LTER at Toolik Field Station, Alaska. Traps were placed along transects in shrub (shrub-dominant) and open (tussock-dominant) tundra sites. Pitfall traps were placed for 48-hour intervals once per week from early June until mid-July 2010. Collected invertebrates were counted and identified to class (all invertebrates), order or family (for some of the most common families collected).
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.10462&urlTail=terrest/insects/data/2010_LG_pitfall.csv
Data File Name 2010_LG_pitfall
Beginning Date 5/31/2010
End Date 7/17/2010
Number of Data Records 1120
Other Files to Reference
Availability Status 1
Quality Control Information
Maintenance Description
Log of Changes: Data file created and metadata entered by AA Dec.2013, uploaded Dec2013-JD
Version2: keywords increase, site names corrected (JD-Dec2013)
Version 3: Checked keywords against the LTER network preferred list and replaced non-preferred terms. Jim L 27Jan14
 
RESEARCH LOCATION:          
Location Name Toolik Lake Field Station (TLFS) Sag River Department of Transportation (SDOT) Imnavait Creek (IMVT) Roche Moutonnee (ROMO)  
Geographic Description Near the site of the LTER research site at Toolik Field Station, in the northern foothills of the Brooks Range. Shrub-dominant areas are proximal to the Toolik Lake outlet. GPS Coordinates taken with a handlheld GPS devide. Near Sagavanirktok River Department of Transportation camp, approximately 31 km northeast of Toolik Lake. Shrub-dominant areas are proximal to the Oksrukiyuk River. Approximately 11 km east of Toolik Lake. Shrub-dominant areas are associated with a water track feature. Approximately 32 km southeast of Toolik Lake in Atigun River Valley, just north of Atigun Pass, open tussock tundra and areas of riparian shrub cover.  
Location Bounding Box          
West Bounding Coordinate -149.5804802 -148.9005495 -149.3083716 -149.328436734  
East Bounding Coordinate -149.569713 -148.8878337 -149.2974781 -149.312408745  
North Bounding Coordinate 68.64648081 68.7666228 68.62120372 68.3752904462  
South Bounding Coordinate 68.64250895 68.76348738 68.61725499 68.3675089108  
OR if single point location          
Latitude In Decimal Degrees In Decimal Degrees In Decimal Degrees In Decimal Degrees  
Longitude In Decimal Degrees In Decimal Degrees In Decimal Degrees In Decimal Degrees  
Elevation In Meters In Meters In Meters In Meters  
Link to Google Map          
           
 
TAXONOMIC COVERAGE:
Organisms studied Araneae; Araneidae; Thomisidae; Clubionidae; Linyphiidae; Lycosidae; Araneidae Gnaphosidae; Chilopoda Lithobiomorpha; Circulionidae; Coleoptera; Elateridae; Carabidae; Coleopteran Larvae, Staphylinidae; Diptera; Tipulidae; Dipteran Larvae; Gastropoda; Hemiptera; Hymenoptera Formicidae; Hymenoptera Apidae, Lepidoptera; Lepidopteran Larvae; Neuroptera; Orthoptera; Other Araneae, Other Coleoptera, Other Hymenoptera, Psocoptera Psocids, Thysanoptera Thrips
 
Methods: PLOT DESIGN: Sites and methods are more extensively described in Rich et al. (2013) and Boelman et al. (2011). Briefly, at each of the four sites, two 10,000 m2 plots were established in May and June 2010: an "OPEN" tundra plot (no or low shrub abundance) and a "SHRUB" plot (moderate to high shrub abundance). Within each plot, two 100 meter replicate transects were established (Transects A, B, C, D). Along each transect, ten pitfall traps were placed at 10-meter intervals (Samples PA-1 to PD-10, for a total of 40 pitfall traps per site on each sampling date). Pitfall traps consisted of a plastic drinking cup (~7.5 cm diameter × 10 cm deep) buried in the ground with the lip of the cup flush with the ground or vegetation surface. Each trap was filled with approximately 2 cm of a 50:50 mixture of water and ethanol to preserve specimens until the sample was retrieved. Pitfall trapping was conducted over the period 29 May – 17 July in 2010, with start date at each site depending on timing of snowmelt. Sampling occurred once per week at all sites with traps being collected after a 48 hour period. Traps were occasionally lost as a result of wildlife disturbance or human error (see NOTES column of dataset). Arthropod specimens were stored in 70% ethanol and identified to class, order or family following established keys.

For more information see:
Rich, M. E., Gough, L. and Boelman, N. T. (2013). Arctic arthropod assemblages in habitats of differing shrub dominance. Ecography, 36: 994–1003. doi: 10.1111/j.1600-0587.2012.00078.x
Boelman, N. T., Gough, L., McLaren, J. R., & Greaves, H. (2011). Does NDVI reflect variation in the structural attributes associated with increasing shrub dominance in arctic tundra? Environmental Research Letters, 6(3), 035501.

Data Table

Variable Name Variable Description Data Type Units DateTime Format Code Information Missing Value Code
SITE The four-letter code for the site name where traps were placed text        
Shrub/Tundra Plot The plot of the site where traps were placed (shrub or open). text        
Transect The transect of the plot where traps were placed (A, B, C, or D). text        
Sample ID A text identifier of the unique pitfall trap location used for weekly sampling. text        
Collect Date Date when traps were collected (48 hours after setting the trap). datetime   dd-mmm-yyyy    
Araneae - Araneidae (Orb Weavers) Number of individuals caught number number     NA=Missing or Not Measured
Araneae - Thomisidae (Crab Spiders) Number of individuals caught number number     NA=Missing or Not Measured
Araneae-Clubionidae (Sac Spiders) Number of individuals caught number number     NA=Missing or Not Measured
Araneae-Linyphiidae (Sheet Web Spiders) Number of individuals caught number number     NA=Missing or Not Measured
Araneae-Lycosidae (Wolf Spiders) Number of individuals caught number number     NA=Missing or Not Measured
Araneidae - Gnaphosidae (Ground Spiders) Number of individuals caught number number     NA=Missing or Not Measured
Chilopoda - Lithobiomorpha (Stone Centipedes) Number of individuals caught number number     NA=Missing or Not Measured
Coleoptera - Circulionidae (Snout Beetles and True Weevils) Number of individuals caught number number     NA=Missing or Not Measured
Coleoptera - Elateridae (Click Beetles) Number of individuals caught number number     NA=Missing or Not Measured
Coleoptera-Carabidae (Ground Beetles) Number of individuals caught number number     NA=Missing or Not Measured
Coleopteran Larvae Number of individuals caught number number     NA=Missing or Not Measured
Coleoptera-Staphylinidae (Rove Beetles) Number of individuals caught number number     NA=Missing or Not Measured
Diptera - Tipulidae (Crane Flies) Number of individuals caught number number     NA=Missing or Not Measured
Diptera (Flies) Number of individuals caught number number     NA=Missing or Not Measured
Dipteran Larvae Number of individuals caught number number     NA=Missing or Not Measured
Gastropoda (Snails and Slugs) Number of individuals caught number number     NA=Missing or Not Measured
Hemiptera (True Bugs) Number of individuals caught number number     NA=Missing or Not Measured
Hymenoptera - Formicidae (Ants) Number of individuals caught number number     NA=Missing or Not Measured
Hymenoptera-Apidae Number of individuals caught number number     NA=Missing or Not Measured
Lepidoptera (Moths and Butterflies) Number of individuals caught number number     NA=Missing or Not Measured
Lepidopteran Larvae (Caterpillars) Number of individuals caught number number     NA=Missing or Not Measured
Neuroptera (Alderflies, Lacewings, Fishflies, Antlions) Number of individuals caught number number     NA=Missing or Not Measured
Orthoptera (Crickets and Grasshoppers) Number of individuals caught number number     NA=Missing or Not Measured
Other Araneae Number of individuals caught number number     NA=Missing or Not Measured
Other Coleoptera Number of individuals caught number number     NA=Missing or Not Measured
Other Hymenoptera Number of individuals caught number number     NA=Missing or Not Measured
Psocoptera (Psocids) Number of individuals caught number number     NA=Missing or Not Measured
Thysanoptera (Thrips) Number of individuals caught number number     NA=Missing or Not Measured
Comments Comments text        

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