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.

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).

Project Keywords: 

Data set ID: 

10462

EML revision ID: 

4

Short name: 

2010_LG_pitfall

DOI: 

10.6073/pasta/d6bf5986e484a45166e1ffb250031f9d
People

Keywords: 

Arctic LTER keywords: 

Taxa: 

Dates

Date Range: 

Monday, May 31, 2010 to Saturday, July 17, 2010

Publication Date: 

Wednesday, December 12, 2012

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.

Sites sampled.

Download a comma delimited (csv) or Excel file (includes metadata and data sheets).

Use of the data requires acceptance of the data use policy --> Arctic LTER Data Use Policy

To cite this data set see the citation example on the LTER Network Data Portal page for this data set.

File 2010_LG_pitfall.csv

Abundance of major... File Details

File 2010_LG_pitfall.xlsx

Excel file with... File Details

Variables Details

(Variables names are in the first line/row of the CSV file and Excel data sheet.)
SITE
  • Label: SITE
  • Definition: The four-letter code for the site name where traps were placed
  • Type: Nominal
  • Missing values: None specified
Shrub/Tundra Plot
  • Label: Shrub/Tundra Plot
  • Definition: The plot of the site where traps were placed (shrub or open).
  • Type: Nominal
  • Missing values: None specified
Transect
  • Label: Transect
  • Definition: The transect of the plot where traps were placed (A, B, C, or D).
  • Type: Nominal
  • Missing values: None specified
Sample ID
  • Label: Sample ID
  • Definition: A text identifier of the unique pitfall trap location used for weekly sampling.
  • Type: Nominal
  • Missing values: None specified
Collect Date
  • Label: Collect Date
  • Definition: Date when traps were collected (48 hours after setting the trap).
  • Type: Date/time
  • Date format: dd-mmm-yyyy
  • Missing values: None specified
Araneae - Araneidae (Orb Weavers)
  • Label: Araneae - Araneidae (Orb Weavers)
  • Definition: Number of individuals caught
  • Type: Physical quantity
  • Unit: number
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • NA = Missing or Not Measured
Araneae - Thomisidae (Crab Spiders)
  • Label: Araneae - Thomisidae (Crab Spiders)
  • Definition: Number of individuals caught
  • Type: Physical quantity
  • Unit: number
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • NA = Missing or Not Measured
Araneae-Clubionidae (Sac Spiders)
  • Label: Araneae-Clubionidae (Sac Spiders)
  • Definition: Number of individuals caught
  • Type: Physical quantity
  • Unit: number
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • NA = Missing or Not Measured
Araneae-Linyphiidae (Sheet Web Spiders)
  • Label: Araneae-Linyphiidae (Sheet Web Spiders)
  • Definition: Number of individuals caught
  • Type: Physical quantity
  • Unit: number
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • NA = Missing or Not Measured
Araneae-Lycosidae (Wolf Spiders)
  • Label: Araneae-Lycosidae (Wolf Spiders)
  • Definition: Number of individuals caught
  • Type: Physical quantity
  • Unit: number
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • NA = Missing or Not Measured
Araneidae - Gnaphosidae (Ground Spiders)
  • Label: Araneidae - Gnaphosidae (Ground Spiders)
  • Definition: Number of individuals caught
  • Type: Physical quantity
  • Unit: number
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • NA = Missing or Not Measured
Chilopoda - Lithobiomorpha (Stone Centipedes)
  • Label: Chilopoda - Lithobiomorpha (Stone Centipedes)
  • Definition: Number of individuals caught
  • Type: Physical quantity
  • Unit: number
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • NA = Missing or Not Measured
Coleoptera - Circulionidae (Snout Beetles and True Weevils)
  • Label: Coleoptera - Circulionidae (Snout Beetles and True Weevils)
  • Definition: Number of individuals caught
  • Type: Physical quantity
  • Unit: number
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • NA = Missing or Not Measured
Coleoptera - Elateridae (Click Beetles)
  • Label: Coleoptera - Elateridae (Click Beetles)
  • Definition: Number of individuals caught
  • Type: Physical quantity
  • Unit: number
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • NA = Missing or Not Measured
Coleoptera-Carabidae (Ground Beetles)
  • Label: Coleoptera-Carabidae (Ground Beetles)
  • Definition: Number of individuals caught
  • Type: Physical quantity
  • Unit: number
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • NA = Missing or Not Measured
Coleopteran Larvae
  • Label: Coleopteran Larvae
  • Definition: Number of individuals caught
  • Type: Physical quantity
  • Unit: number
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • NA = Missing or Not Measured
Coleoptera-Staphylinidae (Rove Beetles)
  • Label: Coleoptera-Staphylinidae (Rove Beetles)
  • Definition: Number of individuals caught
  • Type: Physical quantity
  • Unit: number
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • NA = Missing or Not Measured
Diptera - Tipulidae (Crane Flies)
  • Label: Diptera - Tipulidae (Crane Flies)
  • Definition: Number of individuals caught
  • Type: Physical quantity
  • Unit: number
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • NA = Missing or Not Measured
Diptera (Flies)
  • Label: Diptera (Flies)
  • Definition: Number of individuals caught
  • Type: Physical quantity
  • Unit: number
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • NA = Missing or Not Measured
Dipteran Larvae
  • Label: Dipteran Larvae
  • Definition: Number of individuals caught
  • Type: Physical quantity
  • Unit: number
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • NA = Missing or Not Measured
Gastropoda (Snails and Slugs)
  • Label: Gastropoda (Snails and Slugs)
  • Definition: Number of individuals caught
  • Type: Physical quantity
  • Unit: number
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • NA = Missing or Not Measured
Hemiptera (True Bugs)
  • Label: Hemiptera (True Bugs)
  • Definition: Number of individuals caught
  • Type: Physical quantity
  • Unit: number
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • NA = Missing or Not Measured
Hymenoptera - Formicidae (Ants)
  • Label: Hymenoptera - Formicidae (Ants)
  • Definition: Number of individuals caught
  • Type: Physical quantity
  • Unit: number
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • NA = Missing or Not Measured
Hymenoptera-Apidae
  • Label: Hymenoptera-Apidae
  • Definition: Number of individuals caught
  • Type: Physical quantity
  • Unit: number
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • NA = Missing or Not Measured
Lepidoptera (Moths and Butterflies)
  • Label: Lepidoptera (Moths and Butterflies)
  • Definition: Number of individuals caught
  • Type: Physical quantity
  • Unit: number
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • NA = Missing or Not Measured
Lepidopteran Larvae (Caterpillars)
  • Label: Lepidopteran Larvae (Caterpillars)
  • Definition: Number of individuals caught
  • Type: Physical quantity
  • Unit: number
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • NA = Missing or Not Measured
Neuroptera (Alderflies, Lacewings, Fishflies, Antlions)
  • Label: Neuroptera (Alderflies, Lacewings, Fishflies, Antlions)
  • Definition: Number of individuals caught
  • Type: Physical quantity
  • Unit: number
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • NA = Missing or Not Measured
Orthoptera (Crickets and Grasshoppers)
  • Label: Orthoptera (Crickets and Grasshoppers)
  • Definition: Number of individuals caught
  • Type: Physical quantity
  • Unit: number
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • NA = Missing or Not Measured
Other Araneae
  • Label: Other Araneae
  • Definition: Number of individuals caught
  • Type: Physical quantity
  • Unit: number
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • NA = Missing or Not Measured
Other Coleoptera
  • Label: Other Coleoptera
  • Definition: Number of individuals caught
  • Type: Physical quantity
  • Unit: number
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • NA = Missing or Not Measured
Other Hymenoptera
  • Label: Other Hymenoptera
  • Definition: Number of individuals caught
  • Type: Physical quantity
  • Unit: number
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • NA = Missing or Not Measured
Psocoptera (Psocids)
  • Label: Psocoptera (Psocids)
  • Definition: Number of individuals caught
  • Type: Physical quantity
  • Unit: number
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • NA = Missing or Not Measured
Thysanoptera (Thrips)
  • Label: Thysanoptera (Thrips)
  • Definition: Number of individuals caught
  • Type: Physical quantity
  • Unit: number
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • NA = Missing or Not Measured
Comments
  • Label: Comments
  • Definition: Comments
  • Type: Nominal
  • Missing values: None specified