Riparian Litter Inputs to Streams in the Central Oregon Coast Range - Data

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What does this data set describe?

1. How should this data set be cited?

   Hart, Stephanie, Unpublished Material, Riparian Litter Inputs to Streams in the Central Oregon Coast Range - Data:.

   This is part of the following larger work.

   Hart, Stephanie, 2006, Riparian Litter Inputs to Streams in the Central Oregon Coast Range: Oregon State University, Corvallis, OR.

   Other_Citation_Details: 102p

2. What geographic area does the data set cover?

   West_Bounding_Coordinate: -123.723

   East_Bounding_Coordinate: -123.47

   North_Bounding_Coordinate: 44.553

   South_Bounding_Coordinate: 44.229

   Description_of_Geographic_Extent:

   Data were collected in deciduous and coniferous dominated riparian forests in central Oregon Coast Range

3. What does it look like?

4. Does the data set describe conditions during a particular time period?

   Beginning_Date: Jun-2003

   Ending_Date: Aug-2004

   Currentness_Reference: ground condition

5. What is the general form of this data set?

   Geospatial_Data_Presentation_Form: spreadsheet

6. How does the data set represent geographic features?
   1. How are geographic features stored in the data set?

   2. What coordinate system is used to represent geographic features?

7. How does the data set describe geographic features?

   Apr.xls, Aug.xls, Dec.xls, Feb.xls, Jan.xls, Jul.xls, Jun.xls, Mar.xls, May.xls, Nov.xls, Oct.xls, Sep.xls

   Microsoft Excel spreadsheet (Source: Microsoft)

   Collection

   order of collection starting with September 2003

   Range of values
   Minimum:	1
   Maximum:	12

   Lat_dist

   distance of trap installation from stream (in meters)

   Value	Definition
   0	0 meters from stream
   5	5 meters from stream
   10	10 meters from stream
   "."	stream trap

   Litter_type

   litter category assigned to sample

   Value	Definition
   EVER	evergreen overstory parts
   DEC	deciduous overstory parts
   TWIGS	smaller than 1" in diameter from overstory or understory
   US	understory parts (not twigs)
   UNKN	Bark, moss, lichen, and pieces too small or decayed to identify

   Month

   month of collection

   Date format (mm/dd/yyyy)

   Overstory

   dominant overstory type at collection site

   Value	Definition
   DF	coniferous
   RA	deciduous

   Stream

   code for the name of stream used as a site identifier

   Value	Definition
   BIT	Billy Tower
   CON	Congdon
   LAC	Lake
   RAC	Racks
   DED	S. Fork Alsea
   SLI	Slide
   SPO	Spout
   YEW	Yew
   COL	Coleman
   EFL	E. Fork Lobster
   SLI	Slide
   SPO	Spout
   YEW	Yew
   COL	Coleman
   EFL	E. Fork Lobster
   FAL	Fall
   HON	Honeygrove
   KLI	Klickitat
   LOB	Lobster
   REC	Record
   TOB	Tobe

   Trap_type

   type of trap used for litter collection

   Value	Definition
   lateral
   vertical
   stream

   Treatment

   treatment applied at site

   Value	Definition
   Control
   Cut
   Five
   Ten

   Weight_g

   weight of litter sample

   Range of values
   Minimum:	0
   Maximum:	unknown
   Units:	grams

   fall_chem.xls, sep_chem.xls, spr_summ_chem.xls, winter_chem.xls

   Microsoft Excel spreadsheet (Source: Microsoft)

   %_C

   the percent carbon estimated in the sample_wt combusted using the wt_C divided by sample_wt

   Range of values
   Minimum:	0 (when no_sample or too_small, a “.” was entered)
   Maximum:	100
   Units:	percent

   %_N

   the percent nitrogen estimated in the sample_wt combusted using the wt_N divided by sample_wt

   Range of values
   Minimum:	0 (when no_sample or too_small, a "." was entered)
   Maximum:	100
   Units:	percent

   File_name

   coded 8-character variable to differentiate samples to the software used to combust samples

   The following categories are combined. One character for season (A=fall, B=winter, C=spring/summer, S=September), three characters for site code (Table 1), one character for run number, one character for trap type and one character for litter type. For example: ALAC1LDL = fall season (A), Lake creek (LAC) site, first run, lateral deciduous leaves

   Litter_type

   litter category assigned to sample

   Value	Definition
   DL	deciduous leaves
   DO	deciduous-other
   EN	evergreen needles
   EO	evergreen-other
   US	understory
   TW	twigs
   LO	leftover

   Overstory

   dominant overstory type at collection site

   Value	Definition
   DF	coniferous
   RA	deciduous

   Sample_name

   coded 8-character variable to differentiate samples with (NO_SAMPLE) or (TOO_SMALL) added when appropriate.

   The following categories are combined. One character for season (A=fall, B=winter, C=spring/summer, S=September), three characters for site code (Table 1), one character for run number, one character for trap type and one character for litter type. For example: ALAC1LDL = fall season (A), Lake creek (LAC) site, first run, lateral deciduous leaves

   Sample_wt

   the mass of the sample weighed into a tin capsule and combusted

   Range of values
   Minimum:	0 (when no_sample or too_small, a “.” was entered)
   Maximum:	unknown
   Units:	milligrams

   Trap_type

   type of trap used for litter collection

   Value	Definition
   lateral
   vertical
   stream

   Wt_C

   the weight (mg) of carbon estimated from the Costech elemental analyzer

   Range of values
   Minimum:	0 (when no_sample or too_small, a "." was entered)
   Maximum:	unknown
   Units:	milligrams

   Wt_N

   the weight (mg) of nitrogen estimated from the Costech elemental analyzer

   Range of values
   Minimum:	0 (when no_sample or too_small, a "." was entered)
   Maximum:	unknown
   Units:	milligrams

   canopy_cover.xls

   Microsoft Excel spreadsheet (Source: Microsoft)

   Date

   date that canopy cover was measured

   date format (mm/dd/yyyy)

   Dec_canopy

   proportion of 25 sample points covered by only deciduous overstory species measured with moosehorn

   Range of values
   Minimum:	0 (if no measurement, "." was entered)
   Maximum:	25

   Ever_canopy

   proportion of 25 sample points covered by only coniferous overstory species measured with moosehorn

   Range of values
   Minimum:	0 (if no measurement, "." was entered)
   Maximum:	25

   Mixed_canopy

   proportion of 25 sample points covered by mixed coniferous and deciduous overstory species measured with moosehorn

   Range of values
   Minimum:	0 (if no measurement, "." was entered)
   Maximum:	25

   Open

   area not covered by canopy. (Total_canopy value subtracted from 25)

   Range of values
   Minimum:	0 (if no measurement, "." was entered)
   Maximum:	25

   Overstory

   dominant overstory type at collection site

   Value	Definition
   DF	coniferous
   RA	deciduous

   Section

   subdivision of treatments at each site.

   Value	Definition
   0	0 to 5 meters from stream edge
   5	5 to 10 meters from stream edge
   10	10 to 15 meters from stream edge
   15	15 to 20 meters from stream edge
   20	20 to 25 meters from stream edge
   99	5 x 8 meter section on far side of stream
   stream	area directly above the stream

   Shrub_canopy

   proportion of 25 sample points covered by shrub or understory species measured with moosehorn

   Range of values
   Minimum:	0 (if no measurement, "." was entered)
   Maximum:	25

   Stream

   code for the name of stream used as a site identifier

   Value	Definition
   BIT	Billy Tower
   CON	Congdon
   LAC	Lake
   RAC	Racks
   DED	S. Fork Alsea
   SLI	Slide
   SPO	Spout
   YEW	Yew
   COL	Coleman
   EFL	E. Fork Lobster
   SLI	Slide
   SPO	Spout
   YEW	Yew
   COL	Coleman
   EFL	E. Fork Lobster
   FAL	Fall
   HON	Honeygrove
   KLI	Klickitat
   LOB	Lobster
   REC	Record
   TOB	Tobe

   Total_canopy

   proportion of 25 points that were covered with any overstory species. (Total of Dec_canopy, Ever_canopy, and Mixed_canopy)

   Range of values
   Minimum:	0 (if no measurement, "." was entered)
   Maximum:	25

   Treatment

   treatment applied at site

   Value	Definition
   Control
   Cut
   Five
   Ten

   cwd.xls

   Microsoft Excel spreadsheet (Source: Microsoft)

   Date

   date of measurement

   date format (mm/dd/yyyy)

   Decay_code

   decay classification of log

   Formal codeset
   Codeset Name:	Decay class
   Codeset Source:	Sollins 1982 (Canadian Journal of Forest Research 12:18-28)

   Diameter_cm

   diameter of the log where it intersected the transect

   Range of values
   Minimum:	10 (if no measurement, "." was entered)
   Maximum:	unknown
   Units:	centimeters

   On_ground_y/n

   log was on the ground where it intersected the transect

   Value	Definition
   Y	yes
   N	no
   .	no measurement

   Parallel_to_side_y/n

   log was parallel to or within 45° of parallel to transect

   Value	Definition
   Y	yes
   N	no
   .	no measurement

   Section

   subdivision of treatments at each site.

   Value	Definition
   0	0 to 5 meters from stream edge
   5	5 to 10 meters from stream edge
   10	10 to 15 meters from stream edge
   15	15 to 20 meters from stream edge
   20	20 to 25 meters from stream edge
   99	5 x 8 meter section on far side of stream
   stream	area directly above the stream

   Species

   tree species determined for log

   Value	Definition
   ALRU	Alnus rubra
   THPL	Thuja plicata
   PSME	Psuedotsuga menziesii
   UNKN	unknown species
   UNHW	unknown hardwood
   UNCO	unknown conifer
   .	no measurement

   Stream

   code for the name of stream used as a site identifier

   Value	Definition
   BIT	Billy Tower
   CON	Congdon
   LAC	Lake
   RAC	Racks
   DED	S. Fork Alsea
   SLI	Slide
   SPO	Spout
   YEW	Yew
   COL	Coleman
   EFL	E. Fork Lobster
   SLI	Slide
   SPO	Spout
   YEW	Yew
   COL	Coleman
   EFL	E. Fork Lobster
   FAL	Fall
   HON	Honeygrove
   KLI	Klickitat
   LOB	Lobster
   REC	Record
   TOB	Tobe

   Treatment

   treatment applied at site

   Value	Definition
   Control
   Cut
   Five
   Ten

   overstory.xls

   Microsoft Excel spreadsheet (Source: Microsoft)

   Alive

   overstory tree was alive

   Value	Definition
   1	alive
   0	snag
   .	no measurement

   Date

   date of measurement

   date format (mm/dd/yyyy)

   DBH_cm

   diameter at breast height of measured overstory tree

   Range of values
   Minimum:	10 (if no measurement, "." was entered)
   Maximum:	unknown
   Units:	centimeters

   Section

   subdivision of treatments at each site.

   Value	Definition
   0	0 to 5 meters from stream edge
   5	5 to 10 meters from stream edge
   10	10 to 15 meters from stream edge
   15	15 to 20 meters from stream edge
   20	20 to 25 meters from stream edge
   99	5 x 8 meter section on far side of stream
   stream	area directly above the stream

   Species

   species of measured overstory tree

   Value	Definition
   ACMA	Acer macrophyllum
   ALRU	Alnus rubra
   PREM	Prunus emarginata
   THPL	Thuja plicata
   PSME	Pseudotsuga menziesii
   TABR	Taxus brevifolia
   TSHE	Tsuga heterophylla
   UNCO	Unknown conifer (snags only)
   .	no measurement

   Stream

   code for the name of stream used as a site identifier

   Value	Definition
   BIT	Billy Tower
   CON	Congdon
   LAC	Lake
   RAC	Racks
   DED	S. Fork Alsea
   SLI	Slide
   SPO	Spout
   YEW	Yew
   COL	Coleman
   EFL	E. Fork Lobster
   FAL	Fall
   HON	Honeygrove
   KLI	Klickitat
   LOB	Lobster
   REC	Record
   TOB	Tobe

   Treatment

   treatment applied at site

   Value	Definition
   Control
   Cut
   Five
   Ten

   slope.xls

   Microsoft Excel spreadsheet (Source: Microsoft)

   Date

   date of measurement

   date format (mm/dd/yyyy)

   Down_boundary_%

   percent slope steepness at downstream boundary of each section

   Range of values
   Minimum:	unknown
   Maximum:	unknown
   Units:	percent

   Section

   subdivision of treatments at each site.

   Value	Definition
   0	0 to 5 meters from stream edge
   5	5 to 10 meters from stream edge
   10	10 to 15 meters from stream edge
   15	15 to 20 meters from stream edge
   20	20 to 25 meters from stream edge
   99	5 x 8 meter section on far side of stream
   stream	area directly above the stream

   Stream

   code for the name of stream used as a site identifier

   Value	Definition
   BIT	Billy Tower
   CON	Congdon
   LAC	Lake
   RAC	Racks
   DED	S. Fork Alsea
   SLI	Slide
   SPO	Spout
   YEW	Yew
   COL	Coleman
   EFL	E. Fork Lobster
   SLI	Slide
   SPO	Spout
   YEW	Yew
   COL	Coleman
   EFL	E. Fork Lobster
   FAL	Fall
   HON	Honeygrove
   KLI	Klickitat
   LOB	Lobster
   REC	Record
   TOB	Tobe

   Treatment

   treatment applied at site

   Value	Definition
   Control
   Cut
   Five
   Ten

   spatial_density.xls

   Microsoft Excel spreadsheet (Source: Microsoft)

   Lat_dist

   lateral distance in meters of spatial density measurments

   Value	Definition
   2
   5

   Long_loc

   longitudinal distance in meters of spatial density measurements

   Value	Definition
   2
   4
   6

   Overstory

   dominant overstory type at collection site

   Value	Definition
   DF	coniferous
   RA	deciduous

   Section

   subdivision of treatments at each site.

   Value	Definition
   0	0 to 5 meters from stream edge
   5	5 to 10 meters from stream edge
   10	10 to 15 meters from stream edge
   15	15 to 20 meters from stream edge
   20	20 to 25 meters from stream edge
   99	5 x 8 meter section on far side of stream
   stream	area directly above the stream

   Stream

   code for the name of stream used as a site identifier

   Value	Definition
   BIT	Billy Tower
   CON	Congdon
   LAC	Lake
   RAC	Racks
   DED	S. Fork Alsea
   SLI	Slide
   SPO	Spout
   YEW	Yew
   COL	Coleman
   EFL	E. Fork Lobster
   SLI	Slide
   SPO	Spout
   YEW	Yew
   COL	Coleman
   EFL	E. Fork Lobster
   FAL	Fall
   HON	Honeygrove
   KLI	Klickitat
   LOB	Lobster
   REC	Record
   TOB	Tobe

   Treatment

   treatment applied at site

   Value	Definition
   Control
   Cut
   Five
   Ten

   Vis_lower

   the portions of non-visible circles on the bottom (0-20 cm off ground) half of the board estimating the index of obstruction for litter traveling that path and distance

   Range of values
   Minimum:	0
   Maximum:	10

   Vis_upper

   the portions of non-visible circles on the top (20-40 cm off ground) half of the board estimating the index of obstruction for litter traveling that path and distance

   Range of values
   Minimum:	0
   Maximum:	10

   trap_angle.xls

   Microsoft Excel spreadsheet (Source: Microsoft)

   Lat_dist

   distance of trap location from stream in meters

   Value	Definition
   0	0 meters from stream edge
   5	5 meters from stream edge
   10	10 meters from stream edge
   "."	not measured

   Long_loc

   longitudinal location of trap installation

   Value	Definition
   up	upstream section
   mid	midsection
   down	downstream section

   Overstory

   dominant overstory type at collection site

   Value	Definition
   DF	coniferous
   RA	deciduous

   Stream

   code for the name of stream used as a site identifier

   Value	Definition
   BIT	Billy Tower
   CON	Congdon
   LAC	Lake
   RAC	Racks
   DED	S. Fork Alsea
   SLI	Slide
   SPO	Spout
   YEW	Yew
   COL	Coleman
   EFL	E. Fork Lobster
   SLI	Slide
   SPO	Spout
   YEW	Yew
   COL	Coleman
   EFL	E. Fork Lobster
   FAL	Fall
   HON	Honeygrove
   KLI	Klickitat
   LOB	Lobster
   REC	Record
   TOB	Tobe

   Trap_angle

   angle of trap placement relative to horizontal

   Range of values
   Minimum:	0
   Maximum:	90
   Units:	degrees

   Trap_type

   only lateral trap types were measured

   Value	Definition
   Lateral

   Treatment

   treatment applied at site

   Value	Definition
   Control
   Cut
   Five
   Ten

   trap_slope.xls

   Microsoft Excel spreadsheet (Source: Microsoft)

   Lat_dist

   distance from stream in meters of trap installation

   Value	Definition
   0
   5
   10
   .	stream trap

   Long_loc

   longitudinal location of trap installation

   Value	Definition
   up	upstream section
   mid	midsection
   down	downstream section

   Overstory

   dominant overstory type at collection site

   Value	Definition
   DF	coniferous
   RA	deciduous

   Stream

   code for the name of stream used as a site identifier

   Value	Definition
   BIT	Billy Tower
   CON	Congdon
   LAC	Lake
   RAC	Racks
   DED	S. Fork Alsea
   SLI	Slide
   SPO	Spout
   YEW	Yew
   COL	Coleman
   EFL	E. Fork Lobster
   SLI	Slide
   SPO	Spout
   YEW	Yew
   COL	Coleman
   EFL	E. Fork Lobster
   FAL	Fall
   HON	Honeygrove
   KLI	Klickitat
   LOB	Lobster
   REC	Record
   TOB	Tobe

   Trap_slope

   angle of the mouth of the trap relative to horizontal

   Range of values
   Minimum:	0
   Maximum:	unknown maximum
   Units:	degrees

   Trap_type

   type of trap used for litter collection

   Value	Definition
   lateral
   vertical
   stream

   Treatment

   treatment applied at site

   Value	Definition
   Control
   Cut
   Five
   Ten

   us_groundcover.xls

   Microsoft Excel spreadsheet (Source: Microsoft)

   Date

   date of measurement

   date format (mm/dd/yyyy)

   Dead_pct_cover

   the percent of dead cover area in each quadrat (woody or non woody species that were dead, but the material was still upright)

   Range of values
   Minimum:	0 (if no measurement, "." was entered)
   Maximum:	100
   Units:	percent

   Non-woody_canopy_cover

   the percent of area in each quadrat covered by non-woody species (non woody species that were >12cm in height)

   Range of values
   Minimum:	0 (if no measurement, "." was entered)
   Maximum:	100
   Units:	percent

   Pct_bare_mineral_soil

   the percent of area of bare mineral soil in each quadrat

   Range of values
   Minimum:	0 (if no measurement, "." was entered)
   Maximum:	100
   Units:	percent

   Pct_ground_cover

   percent of groundcover area in each quadrat (non woody species that were <12cm in height)

   Range of values
   Minimum:	0 (if no measurement, "." was entered)
   Maximum:	100
   Units:	percent

   Pct_log

   the percent of area in each quadrat covered by logs (these had to be >10cm, but did not have to be on the ground to be included in percent estimate)

   Range of values
   Minimum:	0 (if no measurement, "." was entered)
   Maximum:	100
   Units:	percent

   Pct_moss

   the percent of area of moss on the ground in each quadrat

   Range of values
   Minimum:	0 (if no measurement, "." was entered)
   Maximum:	100
   Units:	percent

   Quadrat

   sample quadrats in each section

   Value	Definition
   A
   B
   C
   D

   Section

   subdivision of treatments at each site.

   Value	Definition
   0	0 to 5 meters from stream edge
   5	5 to 10 meters from stream edge
   10	10 to 15 meters from stream edge
   15	15 to 20 meters from stream edge
   20	20 to 25 meters from stream edge
   99	5 x 8 meter section on far side of stream
   stream	area directly above the stream

   Stream

   code for the name of stream used as a site identifier

   Value	Definition
   BIT	Billy Tower
   CON	Congdon
   LAC	Lake
   RAC	Racks
   DED	S. Fork Alsea
   SLI	Slide
   SPO	Spout
   YEW	Yew
   COL	Coleman
   EFL	E. Fork Lobster
   SLI	Slide
   SPO	Spout
   YEW	Yew
   COL	Coleman
   EFL	E. Fork Lobster
   FAL	Fall
   HON	Honeygrove
   KLI	Klickitat
   LOB	Lobster
   REC	Record
   TOB	Tobe

   Treatment

   treatment applied at site

   Value	Definition
   Control
   Cut
   Five
   Ten

   us_cover_density.xls

   Microsoft Excel spreadsheet (Source: Microsoft)

   Area_stems_cm2

   estimate of area of all stems for each species in quadrat

   Range of values
   Minimum:	0 (if no measurement, "." was entered)
   Maximum:	unknown maximum
   Units:	centimeters^2

   Basal_pct_cover

   estimate of basal area (cm^2) of each species in quadrat

   Value	Definition
   0	none
   a	<1 cm^2
   b	1-2 cm^2
   c	2-5 cm^2
   d	5-10 cm^2
   e	10-100 cm^2
   f	100-500 cm^2 (1-5% area)
   g	500-1250 cm^2 (5-12%)
   h	1250-2600 cm^2 (12-26%)
   j	2600-5100 cm^2 (26-51%)
   k	5100-7500 cm^2 (51-75%)
   m	7500-10000 cm^2 (>75%)
   .	not measured

   Canopy_pct_cover

   estimate of canopy cover for each species in quadrat

   Value	Definition
   0	very small (<1%)
   1	1-5%
   2	6-25%
   3	26-50%
   4	51-75%
   5	75%
   .	not measured

   Date

   date of measurement

   date format (mm/dd/yyyy)

   Genus_ssp

   codes for species present in each quadrat

   Formal codeset
   Codeset Name:	PLANTS National Database
   Codeset Source:	<http://plants.usda.gov>

   Quadrat

   sample quadrats in each section

   Value	Definition
   A
   B
   C
   D

   Section

   subdivision of treatments at each site.

   Value	Definition
   0	0 to 5 meters from stream edge
   5	5 to 10 meters from stream edge
   10	10 to 15 meters from stream edge
   15	15 to 20 meters from stream edge
   20	20 to 25 meters from stream edge
   99	5 x 8 meter section on far side of stream
   stream	area directly above the stream

   Stream

   code for the name of stream used as a site identifier

   Value	Definition
   BIT	Billy Tower
   CON	Congdon
   LAC	Lake
   RAC	Racks
   DED	S. Fork Alsea
   SLI	Slide
   SPO	Spout
   YEW	Yew
   COL	Coleman
   EFL	E. Fork Lobster
   SLI	Slide
   SPO	Spout
   YEW	Yew
   COL	Coleman
   EFL	E. Fork Lobster
   FAL	Fall
   HON	Honeygrove
   KLI	Klickitat
   LOB	Lobster
   REC	Record
   TOB	Tobe

   Treatment

   treatment applied at site

   Value	Definition
   Control
   Cut
   Five
   Ten

8. What biological taxa does this data set concern?

   Taxonomy:

   Keywords/Taxon:

   Taxonomic_Keyword_Thesaurus: None

   Taxonomic_Keywords: Douglas-fir

   Taxonomic_Keywords: red alder

   Taxonomic_Keywords: plants

   Taxonomic_System:

   Classification_System/Authority:

   Classification_System_Citation:

   Citation_Information:

   Originator:

   National Oceanic and Atmospheric Administration (NOAA) , United States Geological Survey (USGS), Environmental Protection Agency (EPA) , Agriculture Research Service (ARS), Natural Resources Conservation Service (NRCS), National Museum of Natural History (NMNH)

   Publication_Date: 1997

   Title: ITIS (Integrated Taxonomic Identification System)

   Geospatial_Data_Presentation_Form: Database

   Other_Citation_Details:

   ITIS Taxonomic Serial Numbers (TSN) may be included under applicable common name.

   Online_Linkage: <http://www.itis.usda.gov/plantproj/itis/index.html>

   Taxonomic_Procedures: Refer to methodology

   General_Taxonomic_Coverage: Deciduous and coniferous riparian forest communities

   Taxonomic_Classification:

   Taxon_Rank_Name: Kingdom

   Taxon_Rank_Value: Plantae

   Taxonomic_Classification:

   Taxon_Rank_Name: Sub Kingdom

   Taxon_Rank_Value: Tracheobionta

   Taxonomic_Classification:

   Taxon_Rank_Name: Division

   Taxon_Rank_Value: Coniferophyta

   Taxonomic_Classification:

   Taxon_Rank_Name: Class

   Taxon_Rank_Value: Pinopsida

   Taxonomic_Classification:

   Taxon_Rank_Name: Order

   Taxon_Rank_Value: Pinales

   Taxonomic_Classification:

   Taxon_Rank_Name: Family

   Taxon_Rank_Value: Pinaceae

   Taxonomic_Classification:

   Taxon_Rank_Name: Genus

   Taxon_Rank_Value: Pseudotsuga

   Taxonomic_Classification:

   Taxon_Rank_Name: Species

   Taxon_Rank_Value: Pseudotsuga menziesii

   Applicable_Common_Name: Douglas fir

   Applicable_Common_Name: Douglas-fir

   Taxonomic_Classification:

   Taxon_Rank_Name: Division

   Taxon_Rank_Value: Magnoliophyta

   Taxonomic_Classification:

   Taxon_Rank_Name: Class

   Taxon_Rank_Value: Magnoliopsida

   Taxonomic_Classification:

   Taxon_Rank_Name: Sub Class

   Taxon_Rank_Value: Hamamelidae

   Taxonomic_Classification:

   Taxon_Rank_Name: Order

   Taxon_Rank_Value: Fagales

   Taxonomic_Classification:

   Taxon_Rank_Name: Family

   Taxon_Rank_Value: Betulaceae

   Taxonomic_Classification:

   Taxon_Rank_Name: Genus

   Taxon_Rank_Value: Alnus

   Taxonomic_Classification:

   Taxon_Rank_Name: Species

   Taxon_Rank_Value: Alnus rubra

   Applicable_Common_Name: red alder

Who produced the data set?

1. Who are the originators of the data set? (may include formal authors, digital compilers, and editors)
   • Stephanie Hart

2. Who also contributed to the data set?

   This research was produced through the Cooperative Forest Ecosystem Research (CFER) Program, with funding provided by the USGS Forest and Rangeland Ecosystem Science Center and the Oregon Department of Forestry.

3. To whom should users address questions about the data?
   Perakis, Steven
   USGS Forest and Rangeland Ecosystem Science Center
   Corvallis Research Group
   3200 SW Jefferson Way
   Corvallis, OR 97331
   

   (541) 758-8786 (voice)
   

Why was the data set created?

These data were collected as part of a CFER project "Influences of riparian vegetation community composition on animal community response".

How was the data set created?

1. What methods were used to collect the data?

   Method 0 of 2

   Type: Field

   Study Design At each site, we selected uniform areas along a ~300 m stream reach and delineated four plots on one side of the stream, each 8 m (along stream) by 25 m. Additional 8 m x 5 m areas were delineated across the stream from each of the four primary plots. The stream azimuth was measured from thalweg to thalweg in 10 m increments within each site and averaged. The plot azimuth was assigned a value perpendicular to the average stream azimuth and all four plots were installed at that plot azimuth.

   To compare between overstory types among different slopes and make manipulative comparisons within overstory types, a control and three treatments were randomly assigned to the four plots:

   Cut: In a 5 m x 8 m section adjacent to the stream, understory was cut every 2 months for the duration of the study. All plants <10 cm diameter at breast height (dbh) and >12 cm in height were cut at ground level and removed from the site.

   5-m fence: An 8 m long fence was constructed from 1.4 mm mesh parallel to the stream azimuth 5 m slope distance from the stream edge to block litter moving down-slope from upslope of the 1 m tall fence.

   10-m fence: An 8 m long fence was constructed from 1.4 mm mesh parallel to the stream azimuth 10 m slope distance from the stream edge to block litter moving down-slope from upslope of the 1 m tall fence.

   Control: No cutting or fencing occurred in the control.

   Traps to catch vertically falling litter (vertical traps) and litter moving laterally (lateral traps) were installed in August of 2003 at each site. Vertical traps, constructed from laundry baskets and suspended mesh (1.4 mm), were set to capture overstory and understory litter falling vertically from a height of >0.33 m above the forest floor. Vertical traps collected from an area of 0.26 m2 each. Lateral traps were set to collect litter moving down the hillslope rather than falling directly from vegetation. Lateral traps were constructed of PVC rectangles (0.33 x 0.5 m) oriented vertically with a mesh (1.4 mm) bag on the downhill side; each sampled from a length of 0.5 m.

   The cut, control, and 5-m fence plots each had two vertical and three lateral traps edge in a given trap array deployed at the stream. The 10-m fence treatment had no lateral traps at the stream edge; rather, the 10-m fence and 5-m fence treatments each had an array of one vertical and three lateral traps located 5 m from the stream. These fifteen lateral traps and eight vertical traps, plus two additional vertical traps in the 10-m fence treatment (at 0 m and 10 m from the stream), made a total of 25 traps at each site. Due to logistical problems measuring direct inputs to streams, vertical traps at the stream edge were used to estimate inputs to streams. We also installed four vertical traps directly over the stream for direct determination of vertical litter input at two sites of each overstory type for comparison with streamside verticals.

   Within each treatment at each distance from the stream, we systematically installed traps at longitudinal and lateral locations. Stream edge lateral and vertical traps were installed as close to bankfull width as possible. Within each trap array, lateral traps were installed at 2, 4, and 6 m from the downstream edge of the plot (longitudinal direction) and vertical traps were installed at 3 and 5 m from the downstream edge. Downed wood, tip-ups, root-wads, water, and rooted trees or snags were avoided during installation.

   Our aim was to install lateral traps with the trap mouth positioned vertically (e.g., like a soccer goal). We measured and recorded (in degrees) the deviation from vertical (trap-angle) for each lateral trap. The deviation from horizontal of the mouth of each vertical trap (vertical trap slope) was also measured (in degrees). The angle of the first 0.5 m of slope (proximal slope) in front of each lateral trap was measured.

   To test if understory was related to lateral inputs, we planned to compare the inputs to streamside lateral trap in the control and cut plots. Fewer lateral inputs in control lateral traps would indicate that the presence of understory vegetation was related to reduced lateral inputs. Comparison of streamside lateral traps in the control and 5-m fence plots tested if litter was moving > 5 m. Greater lateral inputs in control plots would suggest that litter moved further than 5 m and was collected in the trap. If litter was found to move more than 5 m, similar comparison of 5-m and 10-m fence plots could be made to establish if litter moved more than 5 m not adjacent to the stream.

   Vegetation and Plot Sampling Measurements of vegetation and plot characteristics were conducted between June and September 2003 for each site. Each plot had an area of 240 m2 and was separated into six sections.

   Trees and snags (>10 cm dbh) were identified to species and dbh was measured (in cm) for each tree within each section (Table 2). Canopy cover of overstory species (>2 m in height) vegetation was measured using a moosehorn (view angle of 13°) and categorized by vegetation type at seven systematically selected points within each plot, for a total of twenty-eight per site. The number of cross hairs covered by canopy (out of 25) for overstory deciduous, evergreen species and mixed were counted and recorded separately. Understory species canopy cover (>1 m in height) was also measured using a moosehorn at the same twenty-eight locations as overstory cover in each site. Understory woody vegetation cover, number of stems, stem cross-sectional area, basal or stem cover, and density were visually estimated in four randomly located 1-m^2 quadrats within the first 10 m closest to the stream (two in 0-5 m and two in 5-10 m distance) within each plot. The 0-5 m distance upslope from the stream is also referred to as the 0 m section, the 5-10 m distance is the 5 m section, and likewise for further distances. Visual estimates of groundcover (<12 cm in height), dead herbs and shrubs (dead understory), moss, and bare mineral soil percent cover, and large wood coverage were also made and recorded (in percent) in each quadrat to test the uniformity within sites and with increasing distance from the stream. Only wood pieces larger than 10 cm in diameter were included in large wood estimates. Categorical exclusions that required moving the location of each quadrat included areas where tip-ups, root-wads, water, or rooted trees or snags dominated the 1-m^2 at the pre-determined locations.

   To characterize potential obstructions to lateral litter movement, we estimated spatial density of a given path along the ground using a visual density board (0.5 m x 0.4 m) held at two distances from the line along which traps were arrayed. The board was held at ground level at both 2 and 5 m distances upslope from each trap location. It had 20 equally spaced 10 cm diameter circles, and the portions of non-visible circles on the top and bottom half of the board were estimated as the index of obstruction for litter traveling that path and distance. Obstructive spatial density, measured as the obstructed area of the total area, was measured at six locations (3 points, 2 distances each) in each section in the 10 m closest to the stream in each plot.

   Bankfull width was measured perpendicular to the direction of flow at the mid point of each plot . Slope was measured in 5 m slope-distance increments from the stream to 25 m and a value was recorded for each section. The slope was measured using a clinometer on the downstream boundary of each treatment to sight 5 m upslope.

   In addition, large wood (bigger than 10 cm in diameter and longer than 1m in length) was measured and recorded in 5 m increments upslope along the downstream boundary of each plot. Each piece of wood was identified to species and measured for diameter where it crossed the plot boundary. Logs that lay across the plot boundary were also classified by being a) on the ground b) perpendicular to the plot boundary (within 45 degrees) or not and c) of a decay class less than 3. These three categories were combined to become the mean 1) total numbers of logs on ground, 2) obstructive (perpendicular to plot boundary) and on ground, and 3) low decay, obstructive, and on ground.

   Method 0 of 2

   Type: Lab

   Litter Collection and Sample Preparation Vertical and lateral litter were collected monthly between August 2003 and August 2004. After collection, litter was dried at 50-65° C for 48 hours. Monthly litter from each trap type in each trap array was composited to create one sample for a total of 11 samples per collection for each site. Each sample was filtered through a 1.4 mm mesh sieve to ensure that we were sorting and weighing comparably-sized litter for each trap type. Litter too large to go through the sieve was then sorted into five groups and weighed: deciduous non-twig, coniferous non-twig, understory non-twig, twig, and other. We also enumerated the species in each sample and any unusual items identified. Insects were removed from samples, and lichen and moss were put in the "other" category.

   Control treatments from eight randomly selected sites (4 coniferous and 4 deciduous) were later re-sorted into seven categories: Deciduous leaves, deciduous-other, coniferous needles, coniferous-other, understory non-twig parts, twigs (overstory and understory), and leftover. The re-sorted control litter types were again weighed. Species and specific litter descriptions were recorded for each litter type.

   Control resorted samples were composited into seasons by combining like trap types and litter types across months for chemical analysis. Seasons were assigned based on current understanding of different conditions in streams important to structuring food webs. September, autumn (October-December), winter (January-March), and spring/summer (April-August) were the categories used to bulk chemistry samples. For other seasonal comparisons, September was added to the autumn category and only three seasons were used. At the time of compositing, the most abundant types of each litter type in each season were recorded. These seasonal litter type samples were ground to a fine powder using a Wiley mill, ball mill and/or roller grinder. Approximately 3-5 mg of each litter type was weighed into tin capsules and analyzed for total carbon and nitrogen in a Costech ECS4010 elemental analyzer using atropine and acetanilide as standards. At least one-quarter of all samples were run in duplicate; on average, the duplicates varied from one another by 0.01 %N and 0.31 %C.

   From what previous works were the data drawn?

   How were the data generated, processed, and modified?

   Date: Unknown (process 1 of 1)

   Original data collection - no processing

   What similar or related data should the user be aware of?

How reliable are the data; what problems remain in the data set?

1. How well have the observations been checked?

   No tests for attribute accuracy were conducted

2. How accurate are the geographic locations?

3. How accurate are the heights or depths?

4. Where are the gaps in the data? What is missing?

   Only tree species larger than 10cm in diameter were measured as overstory, only twigs <2.5cm were included in collections

5. How consistent are the relationships among the observations, including topology?

   Careful data entry, proofed all data

How can someone get a copy of the data set?

Are there legal restrictions on access or use of the data?

Access_Constraints: Data are available after research results have been published.

Use_Constraints: Please cite the data set owner and CFER if these data are used.

Who wrote the metadata?

Dates:

Last modified: 08-Mar-2006
Last Reviewed: 15-Mar-2006

Metadata author:

USGS Forest and Rangeland Ecosystem Science Center (FRESC)
777 NW 9th St.
Suite 400
Corvallis, OR 97330

541.750.1030 (voice)

Metadata standard:

FGDC Biological Data Profile of the Content Standard for Digital Geospatial Metadata (FGDC-STD-001.1-1999)