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TEST FOR NWT 172 -- Snowbed experiment species composition data for Niwot Ridge from 2012 to ongoing, yearly

General Information
Data Package:
Local Identifier:edi.999.1
Title:TEST FOR NWT 172 -- Snowbed experiment species composition data for Niwot Ridge from 2012 to ongoing, yearly
Alternate Identifier:DOI PLACE HOLDER
Abstract:

Niwot Ridge climate records indicate a trend of warmer spring and summer temperatures and earlier timing of snowmelt. In alpine tundra plant communities where snow cover limits growing season length, the current climatic trend is conducive to a longer growing season. The snowbed experiment was established in order to monitor changes in plant cover and community composition in the alpine tundra in response to extended summer growing season conditions. Of particular interest are late-melting snowbed areas where plant colonization and survival are most restricted or entirely prevented by a limited number of snow-free days with the sunlight and temperature necessary for plant establishment and growth.

In 2012, fifteen 1 x 1 m plots were established at 5 sites where there are persistent, late-melting snowbeds. Plots were placed along (1) an elevation gradient and (2) a snow-cover gradient from persistent snowbeds, where snowpack is greatest and melt-out dates latest in the season, to wind-scoured dry meadows, where snow pack is least and melt-out dates earliest. In 2015 the one site was dropped from the experiment because the snowbed there was quite different from the other four.

Short Name:Snwbd
Publication Date:2019-05-13
Language:English

Time Period
Begin:
2012-07-25
End:
2018-08-08

People and Organizations
Contact:Information Manager (Niwot Ridge LTER) [  email ]
Creator:Suding, Katharine N 
Creator:Smith, Jane G 

Data Entities
Data Table Name:
Species composition
Description:
Point frame data
Detailed Metadata

Data Entities

Data Table

Data:https://pasta-s.lternet.edu/package/data/eml/edi/999/1/3ebfe6838cc9717c95906036de9efc59
Name:Species composition
Description:Point frame data
Number of Records:7317
Number of Columns:10

Table Structure
Object Name:nwt_snowbed_spcomp.js.data.csv
Size:645396 byte
Authentication:163ca71c4e5b1a5b9044e1b8f234b95b Calculated By MD5
Text Format:
Number of Header Lines:1
Record Delimiter:\r\n
Orientation:column
Simple Delimited:
Field Delimiter:,
Quote Character:"

Table Column Descriptions
 LTER sitesample locationyeardateplotJGS species codeUSDA species codespecies name, USDAgrowth habithits
Column Name:LTER_site  
local_site  
year  
date  
plot  
spp  
USDA_code  
USDA_name  
growth_habit  
hits  
Definition:Niwot Ridge LTER sitesample locationsurvey yearsurvey dateplotspecies code, follows codes used by JG Smithspecies code, follows USDA plants scientific name, according to USDA plants, associated with the USDA species code. This is the name of the lowest level taxonomic rank that can be determined growth habit, follows USDA plants total number of point frame hits; taxa receive a score of 0.5 for present in plot but not hit
Storage Type:string  
string  
dateTime  
dateTime  
string  
string  
string  
string  
string  
float  
Measurement Type:nominalnominaldateTimedateTimenominalnominalnominalnominalnominalratio
Measurement Values Domain:
Definitionany text
Allowed Values and Definitions
Enumerated Domain 
Code Definition
CodeArikaree
DefinitionArikaree site
Source
Code Definition
CodeD1
DefinitionD1 site
Source
Code Definition
CodeMartinelli
DefinitionMartinelli site
Source
Code Definition
CodeRidges
DefinitionRidges site
Source
Code Definition
CodeSoddie
DefinitionSoddie site
Source
FormatYYYY
Precision
FormatYYYY-MM-DD
Precision
Definitionany text
Definitionany text
Definitionany text
Definitionany text
Definitionany text
Unitnumber
Typereal
Missing Value Code:                
CodeNaN
Explno data
  
Accuracy Report:                    
Accuracy Assessment:                    
Coverage:                    
Methods:                    

Data Package Usage Rights

This information is released under the Creative Commons license - Attribution - CC BY (https://creativecommons.org/licenses/by/4.0/). The consumer of these data (“Data User” herein) is required to cite it appropriately in any publication that results from its use. The Data User should realize that these data may be actively used by others for ongoing research and that coordination may be necessary to prevent duplicate publication. The Data User is urged to contact the authors of these data if any questions about methodology or results occur. Where appropriate, the Data User is encouraged to consider collaboration or co-authorship with the authors. The Data User should realize that misinterpretation of data may occur if used out of context of the original study. While substantial efforts are made to ensure the accuracy of data and associated documentation, complete accuracy of data sets cannot be guaranteed. All data are made available "as is." The Data User should be aware, however, that data are updated periodically and it is the responsibility of the Data User to check for new versions of the data. The data authors and the repository where these data were obtained shall not be liable for damages resulting from any use or misinterpretation of the data. Thank you.

Keywords

By Thesaurus:
LTER controlled vocabularyalpine, community composition, long term monitoring, permanent plots, plant communities, plant cover, plant ecology, plant species composition, plants, snow, species composition, species richness, tundra
LTER core areapopulations
(No thesaurus)NWT, Niwot Ridge LTER

Methods and Protocols

These methods, instrumentation and/or protocols apply to all data in this dataset:

Methods and protocols used in the collection of this data package
Description:

Naming Convention

The original five snowbed experiment sites were Arikaree, D1, Martinelli, Soddie and Ridges. Ridges was dropped in 2015. Each plot is named with an alpha numeric code that indicates the site and positions along the elevation and snow cover gradients.

Site: A = Arikaree, D = D1, M = Martinelli, S = Soddie, R = Ridges

Elevation: A to D, where A is the highest in elevation and D is the lowest

Snow Cover: 1 to 5. Often, 1 is in the latest melting snow end of the spectrum and 5 in the earliest. However, due to patchy snowbed melt-out dynamics at many of the sites, the 1 to 5 designation is not always indicative of snow melt timing.

Example: Plot AD3 is the third plot at the lowest elevation at the Arikaree site.

Species Composition

Plant species composition in each plot is measured annually at peak biomass using a point-intercept method within a 100-point grid. Using a metal flag at each of the 100 grid points, the uppermost plant intercepted is recorded as being hit. Plants that are found present in the plot without being hit are given a hit value of 0.5. Non-plant hits may include bare soil surface or small gravely rock (bare), lichen growing on soil (lichen), and rock or rock fragments at least 10 cm in diameter or generally large enough to prevent plant growth at that point (rock). Lichen growing on rock is counted as ‘rock.’ Moss and lichen are recorded only if hit; presence alone is not recorded. Litter is dead plant material that was never alive during the current growing season. Litter hits have been recorded somewhat differently throughout the experiment. Specific methods details were not recorded in 2012-13. In 2014, a hit was counted as litter if plant litter was the uppermost hit at a point. However, due to concern that this method was not exactly that used in 2012-13 and that it may lead to an overestimate of unvegetated area within a plot, the method was modified. In 2015 and subsequent years, when litter was the uppermost hit at a point but live plant material was intercepted lower down, the hit was recorded as the live species. Plot D3 at site D1 was not surveyed in 2016.

People and Organizations

Creators:
Individual: Katharine N Suding
Email Address:
suding@colorado.edu
Individual: Jane G Smith
Email Address:
jane.g.smith@colorado.edu
Id:https://orcid.org/0000-0002-8457-4663
Contacts:
Organization:Niwot Ridge LTER
Position:Information Manager
Address:
4001 Discovery Drive, UCB 450,
University of Colorado,
Boulder, CO 80303 United States
Email Address:
lternwt@colorado.edu
Web Address:
http://niwot.colorado.edu/

Temporal, Geographic and Taxonomic Coverage

Temporal, Geographic and/or Taxonomic information that applies to all data in this dataset:

Time Period
Begin:
2012-07-25
End:
2018-08-08
Geographic Region:
Description:Arikaree
Bounding Coordinates:
Northern:  40.0531719410189Southern:  40.0509508773733
Western:  -105.644676587378Eastern:  -105.637608536616
Geographic Region:
Description:D1
Bounding Coordinates:
Northern:  40.058342260815Southern:  40.0560504956828
Western:  -105.624311060925Eastern:  -105.622521753923
Geographic Region:
Description:Martinelli
Bounding Coordinates:
Northern:  40.0531653863184Southern:  40.0509846966462
Western:  -105.596933521642Eastern:  -105.595603569632
Geographic Region:
Description:Ridges
Bounding Coordinates:
Northern:  40.0577668137623Southern:  40.0568377241462
Western:  -105.604749536743Eastern:  -105.603467658875
Geographic Region:
Description:Soddie
Bounding Coordinates:
Northern:  40.0515085557906Southern:  40.0488086749613
Western:  -105.575387492815Eastern:  -105.572631293437
Taxonomic Range:
Classification:
Rank Name:Variety
Rank Value:Achillea millefolium var. alpicola
Classification:
Rank Name:Species
Rank Value:Agrostis humilis
Classification:
Rank Name:Species
Rank Value:Agrostis mertensii
Classification:
Rank Name:Species
Rank Value:Agrostis variabilis
Classification:
Rank Name:Species
Rank Value:Allium geyeri
Classification:
Rank Name:Species
Rank Value:Androsace septentrionalis
Classification:
Rank Name:Species
Rank Value:Angelica grayi
Classification:
Rank Name:Species
Rank Value:Antennaria media
Classification:
Rank Name:Species
Rank Value:Antennaria rosea
Classification:
Rank Name:Species
Rank Value:Arenaria fendleri
Classification:
Rank Name:Variety
Rank Value:Artemisia campestris ssp. borealis var. borealis
Classification:
Rank Name:Species
Rank Value:Artemisia scopulorum
Classification:
Rank Name:Species
Rank Value:Besseya alpina
Classification:
Rank Name:Species
Rank Value:Calamagrostis purpurascens
Classification:
Rank Name:Species
Rank Value:Caltha leptosepala
Classification:
Rank Name:Species
Rank Value:Campanula rotundifolia
Classification:
Rank Name:Species
Rank Value:Campanula uniflora
Classification:
Rank Name:Genus
Rank Value:Carex
Classification:
Rank Name:Species
Rank Value:Carex albonigra
Classification:
Rank Name:Species
Rank Value:Carex arapahoensis
Classification:
Rank Name:Species
Rank Value:Carex capillaris
Classification:
Rank Name:Species
Rank Value:Carex ebenea
Classification:
Rank Name:Species
Rank Value:Carex elynoides
Classification:
Rank Name:Species
Rank Value:Carex haydeniana
Classification:
Rank Name:Variety
Rank Value:Carex heteroneura var. chalciolepis
Classification:
Rank Name:Species
Rank Value:Carex illota
Classification:
Rank Name:Species
Rank Value:Carex lachenalii
Classification:
Rank Name:Species
Rank Value:Carex nigricans
Classification:
Rank Name:Species
Rank Value:Carex nova
Classification:
Rank Name:Species
Rank Value:Carex perglobosa
Classification:
Rank Name:Species
Rank Value:Carex phaeocephala
Classification:
Rank Name:Species
Rank Value:Carex pyrenaica
Classification:
Rank Name:Species
Rank Value:Carex rossii
Classification:
Rank Name:Variety
Rank Value:Carex rupestris var. drummondiana
Classification:
Rank Name:Variety
Rank Value:Carex scopulorum var. scopulorum
Classification:
Rank Name:Species
Rank Value:Carex siccata
Classification:
Rank Name:Species
Rank Value:Castilleja occidentalis
Classification:
Rank Name:Subspecies
Rank Value:Cerastium arvense ssp. strictum
Classification:
Rank Name:Species
Rank Value:Chionophila jamesii
Classification:
Rank Name:Species
Rank Value:Cirsium scopulorum
Classification:
Rank Name:Subspecies
Rank Value:Crepis runcinata ssp. runcinata
Classification:
Rank Name:Species
Rank Value:Danthonia intermedia
Classification:
Rank Name:Subspecies
Rank Value:Dasiphora fruticosa ssp. floribunda
Classification:
Rank Name:Species
Rank Value:Deschampsia cespitosa
Classification:
Rank Name:Species
Rank Value:Dodecatheon pulchellum
Classification:
Rank Name:Genus
Rank Value:Draba
Classification:
Rank Name:Species
Rank Value:Draba aurea
Classification:
Rank Name:Variety
Rank Value:Draba breweri var. cana
Classification:
Rank Name:Species
Rank Value:Draba crassifolia
Classification:
Rank Name:Species
Rank Value:Draba streptocarpa
Classification:
Rank Name:Species
Rank Value:Elymus scribneri
Classification:
Rank Name:Species
Rank Value:Epilobium anagallidifolium
Classification:
Rank Name:Species
Rank Value:Erigeron melanocephalus
Classification:
Rank Name:Subspecies
Rank Value:Erigeron peregrinus ssp. callianthemus
Classification:
Rank Name:Species
Rank Value:Erigeron pinnatisectus
Classification:
Rank Name:Species
Rank Value:Erigeron simplex
Classification:
Rank Name:Species
Rank Value:Eritrichium nanum
Classification:
Rank Name:Variety
Rank Value:Erysimum capitatum var. purshii
Classification:
Rank Name:Species
Rank Value:Festuca brachyphylla
Classification:
Rank Name:Species
Rank Value:Festuca minutiflora
Classification:
Rank Name:Species
Rank Value:Festuca rubra
Classification:
Rank Name:Species
Rank Value:Frasera speciosa
Classification:
Rank Name:Species
Rank Value:Gentiana algida
Classification:
Rank Name:Species
Rank Value:Gentiana parryi
Classification:
Rank Name:Species
Rank Value:Gentianella amarella
Classification:
Rank Name:Subspecies
Rank Value:Gentianella tenella ssp. tenella
Classification:
Rank Name:Variety
Rank Value:Geum rossii var. turbinatum
Classification:
Rank Name:Species
Rank Value:Helictotrichon mortonianum
Classification:
Rank Name:Variety
Rank Value:Heuchera parvifolia var. nivalis
Classification:
Rank Name:Species
Rank Value:Hieracium gracile
Classification:
Rank Name:Species
Rank Value:Juncus drummondii
Classification:
Rank Name:Species
Rank Value:Juncus parryi
Classification:
Rank Name:Species
Rank Value:Juncus triglumis
Classification:
Rank Name:Species
Rank Value:Kobresia myosuroides
Classification:
Rank Name:Species
Rank Value:Lewisia pygmaea
Classification:
Rank Name:Species
Rank Value:Ligusticum tenuifolium
Classification:
Rank Name:Species
Rank Value:Lloydia serotina
Classification:
Rank Name:Species
Rank Value:Luzula spicata
Classification:
Rank Name:Species
Rank Value:Mertensia lanceolata
Classification:
Rank Name:Species
Rank Value:Minuartia obtusiloba
Classification:
Rank Name:Species
Rank Value:Minuartia rubella
Classification:
Rank Name:Subspecies
Rank Value:Noccaea fendleri ssp. glauca
Classification:
Rank Name:Subspecies
Rank Value:Oreoxis alpina ssp. alpina
Classification:
Rank Name:Species
Rank Value:Oxyria digyna
Classification:
Rank Name:Species
Rank Value:Packera cana
Classification:
Rank Name:Species
Rank Value:Packera crocata
Classification:
Rank Name:Species
Rank Value:Paronychia pulvinata
Classification:
Rank Name:Species
Rank Value:Pedicularis groenlandica
Classification:
Rank Name:Species
Rank Value:Pedicularis parryi
Classification:
Rank Name:Species
Rank Value:Phleum alpinum
Classification:
Rank Name:Species
Rank Value:Phlox pulvinata
Classification:
Rank Name:Genus
Rank Value:Poa
Classification:
Rank Name:Species
Rank Value:Poa alpina
Classification:
Rank Name:Subspecies
Rank Value:Poa arctica ssp. grayana
Classification:
Rank Name:Subspecies
Rank Value:Poa cusickii ssp. epilis
Classification:
Rank Name:Subspecies
Rank Value:Poa glauca ssp. rupicola
Classification:
Rank Name:Species
Rank Value:Poa lettermanii
Classification:
Rank Name:Species
Rank Value:Poa nemoralis
Classification:
Rank Name:Species
Rank Value:Poa reflexa
Classification:
Rank Name:Species
Rank Value:Poa wheeleri
Classification:
Rank Name:Species
Rank Value:Polemonium viscosum
Classification:
Rank Name:Species
Rank Value:Polygonum bistortoides
Classification:
Rank Name:Species
Rank Value:Polygonum viviparum
Classification:
Rank Name:Genus
Rank Value:Potentilla
Classification:
Rank Name:Species
Rank Value:Potentilla concinna
Classification:
Rank Name:Species
Rank Value:Potentilla diversifolia
Classification:
Rank Name:Species
Rank Value:Potentilla nivea
Classification:
Rank Name:Species
Rank Value:Potentilla ovina
Classification:
Rank Name:Species
Rank Value:Potentilla rubricaulis
Classification:
Rank Name:Species
Rank Value:Primula angustifolia
Classification:
Rank Name:Species
Rank Value:Primula parryi
Classification:
Rank Name:Species
Rank Value:Ranunculus adoneus
Classification:
Rank Name:Species
Rank Value:Rhodiola integrifolia
Classification:
Rank Name:Species
Rank Value:Rhodiola rhodantha
Classification:
Rank Name:Genus
Rank Value:Salix
Classification:
Rank Name:Species
Rank Value:Salix petrophila
Classification:
Rank Name:Species
Rank Value:Saxifraga rhomboidea
Classification:
Rank Name:Species
Rank Value:Sedum lanceolatum
Classification:
Rank Name:Variety
Rank Value:Selaginella densa var. scopulorum
Classification:
Rank Name:Variety
Rank Value:Senecio amplectens var. holmii
Classification:
Rank Name:Variety
Rank Value:Senecio fremontii var. blitoides
Classification:
Rank Name:Species
Rank Value:Senecio taraxacoides
Classification:
Rank Name:Species
Rank Value:Sibbaldia procumbens
Classification:
Rank Name:Variety
Rank Value:Silene acaulis var. subacaulescens
Classification:
Rank Name:Subspecies
Rank Value:Silene uralensis ssp. montana
Classification:
Rank Name:Species
Rank Value:Solidago multiradiata
Classification:
Rank Name:Genus
Rank Value:Stellaria
Classification:
Rank Name:Subspecies
Rank Value:Stellaria longipes ssp. longipes
Classification:
Rank Name:Species
Rank Value:Stellaria umbellata
Classification:
Rank Name:Variety
Rank Value:Tetraneuris acaulis var. caespitosa
Classification:
Rank Name:Species
Rank Value:Tetraneuris grandiflora
Classification:
Rank Name:Species
Rank Value:Tonestus lyallii
Classification:
Rank Name:Species
Rank Value:Tonestus pygmaeus
Classification:
Rank Name:Species
Rank Value:Trifolium dasyphyllum
Classification:
Rank Name:Species
Rank Value:Trifolium nanum
Classification:
Rank Name:Subspecies
Rank Value:Trifolium parryi ssp. parryi
Classification:
Rank Name:Species
Rank Value:Trisetum spicatum
Classification:
Rank Name:Subspecies
Rank Value:Trollius laxus ssp. albiflorus
Classification:
Rank Name:Species
Rank Value:Vaccinium
Classification:
Rank Name:Species
Rank Value:Vaccinium myrtillus
Classification:
Rank Name:Species
Rank Value:Vaccinium scoparium
Classification:
Rank Name:Variety
Rank Value:Valeriana edulis var. edulis
Classification:
Rank Name:Variety
Rank Value:Veronica wormskjoldii var. wormskjoldii
Classification:
Rank Name:Species
Rank Value:Viola adunca

Project

Parent Project Information:

Title: LTER: Long-term research on the dynamics of high-elevation ecosystems -- a framework for understanding ecological responsiveness to climate change
Personnel:
Organization:University of Colorado
Role:pointOfContact
Funding: National Science Foundation:1637686

Maintenance

Maintenance:
Description:ongoing
Frequency:
Other Metadata

Additional Metadata

additionalMetadata
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        |___element 'metadata'
        |     |___text '\n      '
        |     |___element 'unitList'
        |     |     |___text '\n        '
        |     |     |___element 'unit'
        |     |     |     |  \___attribute 'id' = 'number'
        |     |     |     |  \___attribute 'name' = 'number'
        |     |     |     |  \___attribute 'unitType' = 'dimensionless'
        |     |     |     |___text '\n          '
        |     |     |     |___element 'description'
        |     |     |     |     |___text 'a number'
        |     |     |     |___text '\n        '
        |     |     |___text '\n      '
        |     |___text '\n    '
        |___text '\n  '

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