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Eight Mile Lake Research Watershed, Carbon in Permafrost Experimental Heating and Drying Research (DryPEHR): Phenology of Dominant Plant Species III - Flowering Date 2013-2019

General Information
Data Package:
Local Identifier:knb-lter-bnz.583.15
Title:Eight Mile Lake Research Watershed, Carbon in Permafrost Experimental Heating and Drying Research (DryPEHR): Phenology of Dominant Plant Species III - Flowering Date 2013-2019
Alternate Identifier:DOI PLACE HOLDER
Abstract:

This drying and warming experiment addresses the following questions: 1) Does ecosystem drying, warming and permafrost thaw cause a net release or uptake of C from the ecosystem to the atmosphere?, 2) Does the decomposition of old C that comprises the bulk of the soil C pool influence ecosystem C loss? 3) How do drying and warming affect plant communities and ecosystem properties? We are answering these questions using a combined warming and drying experiment (DryPEHR), which is situated with the Carbon in Permafrost Experimental Heating Research (CiPEHR) project and located in an upland tundra field site near Healy, Alaska in the foothills of the Alaska Range. Warming treatment here refers to growing season air temperature warming (~1C) using open top chambers (OTC) combined with soil 'warming' using snow fences during the snow covered months. Drying is achieved using an automated pumping system that lowers the water table in the dry plots. Soil warming began in 2008; OTCs and drying in 2011. In this dataset we specifically ask, how does warming and drying of soil and air impact the phenology of dominant plant species? Phenological data was collected to determine the timing of first bud break, onset and completion of senescence, and reproductive effort (flower and berry production).

Short Name:knb-lter-bnz.583.15
Publication Date:2019-12-22
For more information:
Visit: http://www.lter.uaf.edu/data/data-detail/id/583

Time Period
Begin:
2013-05-01
End:
2019-09-16

People and Organizations
Contact:Data Manager (Bonanza Creek LTER) [  email ]
Creator:Kadej, Stephanie  (PhD Student)
Creator:Rodenhizer, Heidi G (PhD Student)
Creator:Mauritz, Marguerite (Research Associate Professor)
Creator:Taylor, Meghan A. (Postdoctoral Researcher )
Creator:Ledman, Justin (Site Technician)
Creator:Natali, Susan M.N. (Affiliate Scientist)
Creator:Schuur, Edward A.G. (Senior Investigator)
Organization:Bonanza Creek LTER

Data Entities
Data Table Name:
583_DryPEHR_Phenology_2013_flower_biomass_LTER.csv
Description:
Phenology of the dominant plant species was monitored througought the growing season. For flowers and berries averages were calculated from the two subplots, hence it is possible to have observed 0.5 flowers or berries.
Data Table Name:
583_DryPEHR_Phenology_2015_flower_biomass_LTER.csv
Description:
Phenology of the dominant plant species was monitored througought the growing season. For flowers and berries averages were calculated from the two subplots, hence it is possible to have observed 0.5 flowers or berries.
Data Table Name:
583_DryPEHR_Phenology_2014_flower_biomass_LTER.csv
Description:
Phenology of the dominant plant species was monitored througought the growing season. For flowers and berries averages were calculated from the two subplots, hence it is possible to have observed 0.5 flowers or berries.
Data Table Name:
583_DryPEHR_Phenology_2016_flower_biomass_LTER.csv
Description:
Phenology of the dominant plant species was monitored througought the growing season. For flowers and berries averages were calculated from the two subplots, hence it is possible to have observed 0.5 flowers or berries.
Data Table Name:
583_DryPEHR_Phenology_2017_flower_biomass_LTER.csv
Description:
Phenology of the dominant plant species was monitored througought the growing season. For flowers and berries averages were calculated from the two subplots, hence it is possible to have observed 0.5 flowers or berries.
Data Table Name:
583_DryPEHR_Phenology_2018_flower_biomass_LTER_Data.csv
Description:
This dataset contains the annual flower count and biomass data from DryPEHR.
Data Table Name:
583_DryPEHR_Phenology_2019_flower_biomass_LTER_Data.csv
Description:
This dataset contains the annual flower count and biomass data from DryPEHR.
Detailed Metadata

Data Entities

Data Table

Data:https://pasta-s.lternet.edu/package/data/eml/knb-lter-bnz/583/15/e85c84206ebb0def85ad0b577f83f4a8
Name:583_DryPEHR_Phenology_2013_flower_biomass_LTER.csv
Description:Phenology of the dominant plant species was monitored througought the growing season. For flowers and berries averages were calculated from the two subplots, hence it is possible to have observed 0.5 flowers or berries.
Number of Columns:12

Table Structure
Object Name:583_DryPEHR_Phenology_2013_flower_biomass_LTER.csv
Text Format:
Number of Header Lines:1
Record Delimiter:\n
Line Delimiter:\n
Orientation:column
Simple Delimited:
Field Delimiter:,
Quote Character:"

Table Column Descriptions
 YearFencePlotSpeciesWWSWDryTreatmentDOY.max.flowersmax.flowersflower.biomassbiomass
Column Name:Year  
Fence  
Plot  
Species  
WW  
SW  
Dry  
Treatment  
DOY.max.flowers  
max.flowers  
flower.biomass  
biomass  
Definition:Sample yearSamples are collected in 3 blocks, each block contains 2 fences (1-2; 3-4; 5-6). Within a block each fence is a split plot, winter warmed on one side, ambient on the other. Fences within blocks are replicates of each otherEach fence contains 4 plots, A, B on the ambient side of the fence,C, D on the winter warmed side of the fence. Summer warming treatments are nested within winter warming treatments, plots C, D have open top chambers to produce a summer warming effect. Plot A is synonymous with plot 2 in CiPEHR data setsspecies for which data was recordedW = winter warmed side; C= control/ambient sideS = summer or air warming; C=controlC=control; D=drying treatmentTreatment label - Air warming refers to presence of an open top chamber, Soil warming refers to the winter warmed plots in which increased snow cover produces elevated soil temperatures, Air & Soil warming refers to open top chamber and increased snow depth treatments, Ambient refers to no air or soil warming treatment.DOY on which maximum number of flowers was observed. NOTE: For Eriophorum vaginatum the DOY denotes the date when the flowers were counted not the date when the maximum number of flowers were counted.maximum number of flowers. NOTE: For Eriophorum vaginatum these values are the number of flowers counted on a particular day not the maximum number of flowers.max number of flowers adjusted for the biomass of that species in the plotspecies biomass
Storage Type:integer  
string  
string  
string  
string  
string  
string  
string  
string  
string  
string  
string  
Measurement Type:nominalnominalnominalnominalnominalnominalnominalnominalnominalnominalnominalnominal
Measurement Values Domain:
DefinitionSample year
DefinitionSamples are collected in 3 blocks, each block contains 2 fences (1-2; 3-4; 5-6). Within a block each fence is a split plot, winter warmed on one side, ambient on the other. Fences within blocks are replicates of each other
DefinitionEach fence contains 4 plots, A, B on the ambient side of the fence,C, D on the winter warmed side of the fence. Summer warming treatments are nested within winter warming treatments, plots C, D have open top chambers to produce a summer warming effect. Plot A is synonymous with plot 2 in CiPEHR data sets
Definitionspecies for which data was recorded
DefinitionW = winter warmed side; C= control/ambient side
DefinitionS = summer or air warming; C=control
DefinitionC=control; D=drying treatment
DefinitionTreatment label - Air warming refers to presence of an open top chamber, Soil warming refers to the winter warmed plots in which increased snow cover produces elevated soil temperatures, Air & Soil warming refers to open top chamber and increased snow depth treatments, Ambient refers to no air or soil warming treatment.
DefinitionDOY on which maximum number of flowers was observed. NOTE: For Eriophorum vaginatum the DOY denotes the date when the flowers were counted not the date when the maximum number of flowers were counted.
Definitionmaximum number of flowers. NOTE: For Eriophorum vaginatum these values are the number of flowers counted on a particular day not the maximum number of flowers.
Definitionmax number of flowers adjusted for the biomass of that species in the plot
Definitionspecies biomass
Missing Value Code:                        
Accuracy Report:                        
Accuracy Assessment:                        
Coverage:                        
Methods:                        

Data Table

Data:https://pasta-s.lternet.edu/package/data/eml/knb-lter-bnz/583/15/15766c22bb9baff9b1685cbb0ac863e9
Name:583_DryPEHR_Phenology_2015_flower_biomass_LTER.csv
Description:Phenology of the dominant plant species was monitored througought the growing season. For flowers and berries averages were calculated from the two subplots, hence it is possible to have observed 0.5 flowers or berries.
Number of Columns:12

Table Structure
Object Name:583_DryPEHR_Phenology_2015_flower_biomass_LTER.csv
Text Format:
Number of Header Lines:1
Record Delimiter:\n
Line Delimiter:\n
Orientation:column
Simple Delimited:
Field Delimiter:,

Table Column Descriptions
 YearFencePlotSpeciesWWSWDryTreatmentDOY.max.flowersmax.flowersflower.biomassbiomass
Column Name:Year  
Fence  
Plot  
Species  
WW  
SW  
Dry  
Treatment  
DOY.max.flowers  
max.flowers  
flower.biomass  
biomass  
Definition:Sample yearSamples are collected in 3 blocks, each block contains 2 fences (1-2; 3-4; 5-6). Within a block each fence is a split plot, winter warmed on one side, ambient on the other. Fences within blocks are replicates of each otherEach fence contains 4 plots, A, B on the ambient side of the fence,C, D on the winter warmed side of the fence. Summer warming treatments are nested within winter warming treatments, plots C, D have open top chambers to produce a summer warming effect. Plot A is synonymous with plot 2 in CiPEHR data setsspecies for which data was recordedW = winter warmed side; C= control/ambient sideS = summer or air warming; C=controlC=control; D=drying treatmentTreatment label - Air warming refers to presence of an open top chamber, Soil warming refers to the winter warmed plots in which increased snow cover produces elevated soil temperatures, Air & Soil warming refers to open top chamber and increased snow depth treatments, Ambient refers to no air or soil warming treatment.DOY on which maximum number of flowers was observed. NOTE: For Eriophorum vaginatum the DOY denotes the date when the flowers were counted not the date when the maximum number of flowers were counted.maximum number of flowers. NOTE: For Eriophorum vaginatum these values are the number of flowers counted on a particular day not the maximum number of flowers.max number of flowers adjusted for the biomass of that species in the plotspecies biomass
Storage Type:integer  
string  
string  
string  
string  
string  
string  
string  
string  
string  
string  
string  
Measurement Type:nominalnominalnominalnominalnominalnominalnominalnominalnominalnominalnominalnominal
Measurement Values Domain:
DefinitionSample year
DefinitionSamples are collected in 3 blocks, each block contains 2 fences (1-2; 3-4; 5-6). Within a block each fence is a split plot, winter warmed on one side, ambient on the other. Fences within blocks are replicates of each other
DefinitionEach fence contains 4 plots, A, B on the ambient side of the fence,C, D on the winter warmed side of the fence. Summer warming treatments are nested within winter warming treatments, plots C, D have open top chambers to produce a summer warming effect. Plot A is synonymous with plot 2 in CiPEHR data sets
Definitionspecies for which data was recorded
DefinitionW = winter warmed side; C= control/ambient side
DefinitionS = summer or air warming; C=control
DefinitionC=control; D=drying treatment
DefinitionTreatment label - Air warming refers to presence of an open top chamber, Soil warming refers to the winter warmed plots in which increased snow cover produces elevated soil temperatures, Air & Soil warming refers to open top chamber and increased snow depth treatments, Ambient refers to no air or soil warming treatment.
DefinitionDOY on which maximum number of flowers was observed. NOTE: For Eriophorum vaginatum the DOY denotes the date when the flowers were counted not the date when the maximum number of flowers were counted.
Definitionmaximum number of flowers. NOTE: For Eriophorum vaginatum these values are the number of flowers counted on a particular day not the maximum number of flowers.
Definitionmax number of flowers adjusted for the biomass of that species in the plot
Definitionspecies biomass
Missing Value Code:                        
Accuracy Report:                        
Accuracy Assessment:                        
Coverage:                        
Methods:                        

Data Table

Data:https://pasta-s.lternet.edu/package/data/eml/knb-lter-bnz/583/15/442bb26939fe6b705f5bd9f4551d3584
Name:583_DryPEHR_Phenology_2014_flower_biomass_LTER.csv
Description:Phenology of the dominant plant species was monitored througought the growing season. For flowers and berries averages were calculated from the two subplots, hence it is possible to have observed 0.5 flowers or berries.
Number of Columns:12

Table Structure
Object Name:583_DryPEHR_Phenology_2014_flower_biomass_LTER.csv
Text Format:
Number of Header Lines:1
Record Delimiter:\n
Line Delimiter:\n
Orientation:column
Simple Delimited:
Field Delimiter:,
Quote Character:"

Table Column Descriptions
 YearFencePlotSpeciesWWSWDryTreatmentDOY.max.flowersmax.flowersflower.biomassbiomass
Column Name:Year  
Fence  
Plot  
Species  
WW  
SW  
Dry  
Treatment  
DOY.max.flowers  
max.flowers  
flower.biomass  
biomass  
Definition:Sample yearSamples are collected in 3 blocks, each block contains 2 fences (1-2; 3-4; 5-6). Within a block each fence is a split plot, winter warmed on one side, ambient on the other. Fences within blocks are replicates of each otherEach fence contains 4 plots, A, B on the ambient side of the fence,C, D on the winter warmed side of the fence. Summer warming treatments are nested within winter warming treatments, plots C, D have open top chambers to produce a summer warming effect. Plot A is synonymous with plot 2 in CiPEHR data setsspecies for which data was recordedW = winter warmed side; C= control/ambient sideS = summer or air warming; C=controlC=control; D=drying treatmentTreatment label - Air warming refers to presence of an open top chamber, Soil warming refers to the winter warmed plots in which increased snow cover produces elevated soil temperatures, Air & Soil warming refers to open top chamber and increased snow depth treatments, Ambient refers to no air or soil warming treatment.DOY on which maximum number of flowers was observed. NOTE: For Eriophorum vaginatum the DOY denotes the date when the flowers were counted not the date when the maximum number of flowers were counted.maximum number of flowers. NOTE: For Eriophorum vaginatum these values are the number of flowers counted on a particular day not the maximum number of flowers.max number of flowers adjusted for the biomass of that species in the plotspecies biomass
Storage Type:integer  
string  
string  
string  
string  
string  
string  
string  
string  
string  
string  
string  
Measurement Type:nominalnominalnominalnominalnominalnominalnominalnominalnominalnominalnominalnominal
Measurement Values Domain:
DefinitionSample year
DefinitionSamples are collected in 3 blocks, each block contains 2 fences (1-2; 3-4; 5-6). Within a block each fence is a split plot, winter warmed on one side, ambient on the other. Fences within blocks are replicates of each other
DefinitionEach fence contains 4 plots, A, B on the ambient side of the fence,C, D on the winter warmed side of the fence. Summer warming treatments are nested within winter warming treatments, plots C, D have open top chambers to produce a summer warming effect. Plot A is synonymous with plot 2 in CiPEHR data sets
Definitionspecies for which data was recorded
DefinitionW = winter warmed side; C= control/ambient side
DefinitionS = summer or air warming; C=control
DefinitionC=control; D=drying treatment
DefinitionTreatment label - Air warming refers to presence of an open top chamber, Soil warming refers to the winter warmed plots in which increased snow cover produces elevated soil temperatures, Air & Soil warming refers to open top chamber and increased snow depth treatments, Ambient refers to no air or soil warming treatment.
DefinitionDOY on which maximum number of flowers was observed. NOTE: For Eriophorum vaginatum the DOY denotes the date when the flowers were counted not the date when the maximum number of flowers were counted.
Definitionmaximum number of flowers. NOTE: For Eriophorum vaginatum these values are the number of flowers counted on a particular day not the maximum number of flowers.
Definitionmax number of flowers adjusted for the biomass of that species in the plot
Definitionspecies biomass
Missing Value Code:                        
Accuracy Report:                        
Accuracy Assessment:                        
Coverage:                        
Methods:                        

Data Table

Data:https://pasta-s.lternet.edu/package/data/eml/knb-lter-bnz/583/15/0ea370c36d3e1a5189ecd493ee61aa37
Name:583_DryPEHR_Phenology_2016_flower_biomass_LTER.csv
Description:Phenology of the dominant plant species was monitored througought the growing season. For flowers and berries averages were calculated from the two subplots, hence it is possible to have observed 0.5 flowers or berries.
Number of Columns:12

Table Structure
Object Name:583_DryPEHR_Phenology_2016_flower_biomass_LTER.csv
Text Format:
Number of Header Lines:1
Record Delimiter:\n
Line Delimiter:\n
Orientation:column
Simple Delimited:
Field Delimiter:,
Quote Character:"

Table Column Descriptions
 YearFencePlotSpeciesWWSWDryTreatmentDOY.max.flowersmax.flowersflower.biomassbiomass
Column Name:Year  
Fence  
Plot  
Species  
WW  
SW  
Dry  
Treatment  
DOY.max.flowers  
max.flowers  
flower.biomass  
biomass  
Definition:Sample yearSamples are collected in 3 blocks, each block contains 2 fences (1-2; 3-4; 5-6). Within a block each fence is a split plot, winter warmed on one side, ambient on the other. Fences within blocks are replicates of each otherEach fence contains 4 plots, A, B on the ambient side of the fence,C, D on the winter warmed side of the fence. Summer warming treatments are nested within winter warming treatments, plots C, D have open top chambers to produce a summer warming effect. Plot A is synonymous with plot 2 in CiPEHR data setsspecies for which data was recordedW = winter warmed side; C= control/ambient sideS = summer or air warming; C=controlC=control; D=drying treatmentTreatment label - Air warming refers to presence of an open top chamber, Soil warming refers to the winter warmed plots in which increased snow cover produces elevated soil temperatures, Air & Soil warming refers to open top chamber and increased snow depth treatments, Ambient refers to no air or soil warming treatment.DOY on which maximum number of flowers was observed. NOTE: For Eriophorum vaginatum the DOY denotes the date when the flowers were counted not the date when the maximum number of flowers were counted.maximum number of flowers. NOTE: For Eriophorum vaginatum these values are the number of flowers counted on a particular day not the maximum number of flowers.max number of flowers adjusted for the biomass of that species in the plotspecies biomass
Storage Type:integer  
string  
string  
string  
string  
string  
string  
string  
string  
string  
string  
string  
Measurement Type:nominalnominalnominalnominalnominalnominalnominalnominalnominalnominalnominalnominal
Measurement Values Domain:
DefinitionSample year
DefinitionSamples are collected in 3 blocks, each block contains 2 fences (1-2; 3-4; 5-6). Within a block each fence is a split plot, winter warmed on one side, ambient on the other. Fences within blocks are replicates of each other
DefinitionEach fence contains 4 plots, A, B on the ambient side of the fence,C, D on the winter warmed side of the fence. Summer warming treatments are nested within winter warming treatments, plots C, D have open top chambers to produce a summer warming effect. Plot A is synonymous with plot 2 in CiPEHR data sets
Definitionspecies for which data was recorded
DefinitionW = winter warmed side; C= control/ambient side
DefinitionS = summer or air warming; C=control
DefinitionC=control; D=drying treatment
DefinitionTreatment label - Air warming refers to presence of an open top chamber, Soil warming refers to the winter warmed plots in which increased snow cover produces elevated soil temperatures, Air & Soil warming refers to open top chamber and increased snow depth treatments, Ambient refers to no air or soil warming treatment.
DefinitionDOY on which maximum number of flowers was observed. NOTE: For Eriophorum vaginatum the DOY denotes the date when the flowers were counted not the date when the maximum number of flowers were counted.
Definitionmaximum number of flowers. NOTE: For Eriophorum vaginatum these values are the number of flowers counted on a particular day not the maximum number of flowers.
Definitionmax number of flowers adjusted for the biomass of that species in the plot
Definitionspecies biomass
Missing Value Code:                        
Accuracy Report:                        
Accuracy Assessment:                        
Coverage:                        
Methods:                        

Data Table

Data:https://pasta-s.lternet.edu/package/data/eml/knb-lter-bnz/583/15/a6771727365a1f6e63149f3b16c2ce18
Name:583_DryPEHR_Phenology_2017_flower_biomass_LTER.csv
Description:Phenology of the dominant plant species was monitored througought the growing season. For flowers and berries averages were calculated from the two subplots, hence it is possible to have observed 0.5 flowers or berries.
Number of Columns:12

Table Structure
Object Name:583_DryPEHR_Phenology_2017_flower_biomass_LTER.csv
Text Format:
Number of Header Lines:1
Record Delimiter:\n
Line Delimiter:\n
Orientation:column
Simple Delimited:
Field Delimiter:,
Quote Character:"

Table Column Descriptions
 YearFencePlotSpeciesWWSWDryTreatmentDOY.max.flowersmax.flowersflower.biomassbiomass
Column Name:Year  
Fence  
Plot  
Species  
WW  
SW  
Dry  
Treatment  
DOY.max.flowers  
max.flowers  
flower.biomass  
biomass  
Definition:Sample yearSamples are collected in 3 blocks, each block contains 2 fences (1-2; 3-4; 5-6). Within a block each fence is a split plot, winter warmed on one side, ambient on the other. Fences within blocks are replicates of each otherEach fence contains 4 plots, A, B on the ambient side of the fence,C, D on the winter warmed side of the fence. Summer warming treatments are nested within winter warming treatments, plots C, D have open top chambers to produce a summer warming effect. Plot A is synonymous with plot 2 in CiPEHR data setsspecies for which data was recordedW = winter warmed side; C= control/ambient sideS = summer or air warming; C=controlC=control; D=drying treatmentTreatment label - Air warming refers to presence of an open top chamber, Soil warming refers to the winter warmed plots in which increased snow cover produces elevated soil temperatures, Air & Soil warming refers to open top chamber and increased snow depth treatments, Ambient refers to no air or soil warming treatment.DOY on which maximum number of flowers was observed. NOTE: For Eriophorum vaginatum the DOY denotes the date when the flowers were counted not the date when the maximum number of flowers were counted.maximum number of flowers. NOTE: For Eriophorum vaginatum these values are the number of flowers counted on a particular day not the maximum number of flowers.max number of flowers adjusted for the biomass of that species in the plotspecies biomass
Storage Type:integer  
string  
string  
string  
string  
string  
string  
string  
string  
string  
string  
string  
Measurement Type:nominalnominalnominalnominalnominalnominalnominalnominalnominalnominalnominalnominal
Measurement Values Domain:
DefinitionSample year
DefinitionSamples are collected in 3 blocks, each block contains 2 fences (1-2; 3-4; 5-6). Within a block each fence is a split plot, winter warmed on one side, ambient on the other. Fences within blocks are replicates of each other
DefinitionEach fence contains 4 plots, A, B on the ambient side of the fence,C, D on the winter warmed side of the fence. Summer warming treatments are nested within winter warming treatments, plots C, D have open top chambers to produce a summer warming effect. Plot A is synonymous with plot 2 in CiPEHR data sets
Definitionspecies for which data was recorded
DefinitionW = winter warmed side; C= control/ambient side
DefinitionS = summer or air warming; C=control
DefinitionC=control; D=drying treatment
DefinitionTreatment label - Air warming refers to presence of an open top chamber, Soil warming refers to the winter warmed plots in which increased snow cover produces elevated soil temperatures, Air & Soil warming refers to open top chamber and increased snow depth treatments, Ambient refers to no air or soil warming treatment.
DefinitionDOY on which maximum number of flowers was observed. NOTE: For Eriophorum vaginatum the DOY denotes the date when the flowers were counted not the date when the maximum number of flowers were counted.
Definitionmaximum number of flowers. NOTE: For Eriophorum vaginatum these values are the number of flowers counted on a particular day not the maximum number of flowers.
Definitionmax number of flowers adjusted for the biomass of that species in the plot
Definitionspecies biomass
Missing Value Code:                        
Accuracy Report:                        
Accuracy Assessment:                        
Coverage:                        
Methods:                        

Data Table

Data:https://pasta-s.lternet.edu/package/data/eml/knb-lter-bnz/583/15/7d5bcb8c0e976eca302906b0e14af009
Name:583_DryPEHR_Phenology_2018_flower_biomass_LTER_Data.csv
Description:This dataset contains the annual flower count and biomass data from DryPEHR.
Number of Columns:12

Table Structure
Object Name:583_DryPEHR_Phenology_2018_flower_biomass_LTER_Data.csv
Text Format:
Number of Header Lines:1
Record Delimiter:\n
Line Delimiter:\n
Orientation:column
Simple Delimited:
Field Delimiter:,
Quote Character:"

Table Column Descriptions
 YearFencePlotSpeciesWWSWDryTreatmentDOY.max.flowersmax.flowersflower.biomassbiomass
Column Name:Year  
Fence  
Plot  
Species  
WW  
SW  
Dry  
Treatment  
DOY.max.flowers  
max.flowers  
flower.biomass  
biomass  
Definition:Sample yearSamples are collected in 3 blocks, each block contains 2 fences (1-2; 3-4; 5-6). Within a block each fence is a split plot, winter warmed on one side, ambient on the other. Fences within blocks are replicates of each otherEach fence contains 4 plots, A, B on the ambient side of the fence,C, D on the winter warmed side of the fence. Summer warming treatments are nested within winter warming treatments, plots C, D have open top chambers to produce a summer warming effect. Plot A is synonymous with plot 2 in CiPEHR data setsspecies for which data was recordedW = winter warmed side; C= control/ambient sideS = summer or air warming; C=controlC=control; D=drying treatmentTreatment label - Air warming refers to presence of an open top chamber, Soil warming refers to the winter warmed plots in which increased snow cover produces elevated soil temperatures, Air & Soil warming refers to open top chamber and increased snow depth treatments, Ambient refers to no air or soil warming treatment.DOY on which maximum number of flowers was observed. NOTE: For Eriophorum vaginatum the DOY denotes the date when the flowers were counted not the date when the maximum number of flowers were counted.maximum number of flowers. NOTE: For Eriophorum vaginatum these values are the number of flowers counted on a particular day not the maximum number of flowers.max number of flowers adjusted for the biomass of that species in the plotspecies biomass
Storage Type:integer  
string  
string  
string  
string  
string  
string  
string  
string  
string  
string  
string  
Measurement Type:nominalnominalnominalnominalnominalnominalnominalnominalnominalnominalnominalnominal
Measurement Values Domain:
DefinitionSample year
DefinitionSamples are collected in 3 blocks, each block contains 2 fences (1-2; 3-4; 5-6). Within a block each fence is a split plot, winter warmed on one side, ambient on the other. Fences within blocks are replicates of each other
DefinitionEach fence contains 4 plots, A, B on the ambient side of the fence,C, D on the winter warmed side of the fence. Summer warming treatments are nested within winter warming treatments, plots C, D have open top chambers to produce a summer warming effect. Plot A is synonymous with plot 2 in CiPEHR data sets
Definitionspecies for which data was recorded
DefinitionW = winter warmed side; C= control/ambient side
DefinitionS = summer or air warming; C=control
DefinitionC=control; D=drying treatment
DefinitionTreatment label - Air warming refers to presence of an open top chamber, Soil warming refers to the winter warmed plots in which increased snow cover produces elevated soil temperatures, Air & Soil warming refers to open top chamber and increased snow depth treatments, Ambient refers to no air or soil warming treatment.
DefinitionDOY on which maximum number of flowers was observed. NOTE: For Eriophorum vaginatum the DOY denotes the date when the flowers were counted not the date when the maximum number of flowers were counted.
Definitionmaximum number of flowers. NOTE: For Eriophorum vaginatum these values are the number of flowers counted on a particular day not the maximum number of flowers.
Definitionmax number of flowers adjusted for the biomass of that species in the plot
Definitionspecies biomass
Missing Value Code:                        
Accuracy Report:                        
Accuracy Assessment:                        
Coverage:                        
Methods:                        

Data Table

Data:https://pasta-s.lternet.edu/package/data/eml/knb-lter-bnz/583/15/8a87be132a524cc0b9a534ca54cf5b8e
Name:583_DryPEHR_Phenology_2019_flower_biomass_LTER_Data.csv
Description:This dataset contains the annual flower count and biomass data from DryPEHR.
Number of Columns:12

Table Structure
Object Name:583_DryPEHR_Phenology_2019_flower_biomass_LTER_Data.csv
Text Format:
Number of Header Lines:1
Record Delimiter:\n
Line Delimiter:\n
Orientation:column
Simple Delimited:
Field Delimiter:,
Quote Character:"

Table Column Descriptions
 YearFencePlotSpeciesWWSWDryTreatmentDOY.max.flowersmax.flowersflower.biomassbiomass
Column Name:Year  
Fence  
Plot  
Species  
WW  
SW  
Dry  
Treatment  
DOY.max.flowers  
max.flowers  
flower.biomass  
biomass  
Definition:Sample yearSamples are collected in 3 blocks, each block contains 2 fences (1-2; 3-4; 5-6). Within a block each fence is a split plot, winter warmed on one side, ambient on the other. Fences within blocks are replicates of each otherEach fence contains 4 plots, A, B on the ambient side of the fence,C, D on the winter warmed side of the fence. Summer warming treatments are nested within winter warming treatments, plots C, D have open top chambers to produce a summer warming effect. Plot A is synonymous with plot 2 in CiPEHR data setsspecies for which data was recordedW = winter warmed side; C= control/ambient sideS = summer or air warming; C=controlC=control; D=drying treatmentTreatment label - Air warming refers to presence of an open top chamber, Soil warming refers to the winter warmed plots in which increased snow cover produces elevated soil temperatures, Air & Soil warming refers to open top chamber and increased snow depth treatments, Ambient refers to no air or soil warming treatment.DOY on which maximum number of flowers was observed. NOTE: For Eriophorum vaginatum the DOY denotes the date when the flowers were counted not the date when the maximum number of flowers were counted.maximum number of flowers. NOTE: For Eriophorum vaginatum these values are the number of flowers counted on a particular day not the maximum number of flowers.max number of flowers adjusted for the biomass of that species in the plotspecies biomass
Storage Type:integer  
string  
string  
string  
string  
string  
string  
string  
string  
string  
string  
string  
Measurement Type:nominalnominalnominalnominalnominalnominalnominalnominalnominalnominalnominalnominal
Measurement Values Domain:
DefinitionSample year
DefinitionSamples are collected in 3 blocks, each block contains 2 fences (1-2; 3-4; 5-6). Within a block each fence is a split plot, winter warmed on one side, ambient on the other. Fences within blocks are replicates of each other
DefinitionEach fence contains 4 plots, A, B on the ambient side of the fence,C, D on the winter warmed side of the fence. Summer warming treatments are nested within winter warming treatments, plots C, D have open top chambers to produce a summer warming effect. Plot A is synonymous with plot 2 in CiPEHR data sets
Definitionspecies for which data was recorded
DefinitionW = winter warmed side; C= control/ambient side
DefinitionS = summer or air warming; C=control
DefinitionC=control; D=drying treatment
DefinitionTreatment label - Air warming refers to presence of an open top chamber, Soil warming refers to the winter warmed plots in which increased snow cover produces elevated soil temperatures, Air & Soil warming refers to open top chamber and increased snow depth treatments, Ambient refers to no air or soil warming treatment.
DefinitionDOY on which maximum number of flowers was observed. NOTE: For Eriophorum vaginatum the DOY denotes the date when the flowers were counted not the date when the maximum number of flowers were counted.
Definitionmaximum number of flowers. NOTE: For Eriophorum vaginatum these values are the number of flowers counted on a particular day not the maximum number of flowers.
Definitionmax number of flowers adjusted for the biomass of that species in the plot
Definitionspecies biomass
Missing Value Code:                        
Accuracy Report:                        
Accuracy Assessment:                        
Coverage:                        
Methods:                        

Data Package Usage Rights

Data Use

This work has been produced as part of the Long Term Ecological Research Program and data users should adhere to the Data Use Agreement of the Long Term Ecological Research Network.

Citation

It is considered a matter of professional ethics to acknowledge the work of other scientists. Thus, the Data User should 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(s), Year of Data Publication, Title of Dataset, Publisher, Dataset identifier, Dataset URL, Dataset DOI. For Example: Van Cleve, Keith; Chapin, F. Stuart; Ruess, Roger W. 2016. Bonanza Creek Experimental Forest: Hourly Temperature (sample, min, max) at 50 cm and 150 cm from 1988 to Present, Bonanza Creek LTER - University of Alaska Fairbanks. BNZ:1, http://www.lter.uaf.edu/data/data-detail/id/1. doi:10.6073/pasta/725db90d86686be13e6d6b2da5d61217.

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 are provided by the Bonanza Creek LTER, a partnership between the University of Alaska Fairbanks, and the U.S. Forest Service. Significant funding for collection of these data was provided by the National Science Foundation Long-Term Ecological Research program (NSF Grant numbers DEB-1636476, DEB-1026415, DEB-0620579, DEB-0423442, DEB-0080609, DEB-9810217, DEB-9211769, DEB-8702629) and by the USDA Forest Service, Pacific Northwest Research Station (Agreement # RJVA-PNW-01-JV-11261952-231).

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.

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.

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 in its present condition. 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.

Additional Acknowledgements

The Schuur lab data provided on this site are freely available and were furnished by individual Schuur lab members who encourage their use. Please kindly inform in writing (or e-mail) the appropriate Schuur lab scientist(s) (PI) of how you intend to use the data and of any publication plans. It is also important to contact the Schuur lab investigator to assure you are downloading the latest revision of the data and to prevent potential misuse or misinterpretation of the data. Please acknowledge the data source as a citation. If the Schuur lab (PIs) feel that they should be acknowledged or offered participation as authors, they will let you know and we assume that an agreement on such matters will be reached before publishing and/or use of the data for publication. If your work directly competes with the Schuur lab analysis they may ask that they have the opportunity to submit a manuscript before you submit one that uses unpublished data. In addition, when publishing please acknowledge the agency that supported the research. Lastly, we kindly request that those publishing papers using Schuur lab data provide reprints to the PIs. [This statement taken from The Ameriflux Network data sharing policy]. Funding Acknowledgements: National Science Foundation Office of Polar Programs, Arctic Natural Sciences Program (ARC-1019324 , ARC-1203777, OPP-1312402); Department of Energy NICCR Program; Department of Energy Terrestrial Ecosystem Processes; National Science Foundation CAREER Program; National Parks Inventory and Monitoring Program; National Science Foundation Bonanza Creek LTER program.

Keywords

By Thesaurus:
Biogeochemistryclimate, disturbance, plant phenology

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:

Experimental Design

The DryPEHR project is adjacent to the Eight Mile Lake (EML) watershed and EML natural thaw gradient, and is situated in the northern foothills of the Alaska Range. Permafrost temperature has been monitored annually on a gentle north-facing slope at this site in a 30-m-deep borehole that was installed in 1985. Warming treatment here refers to growing season air temperature warming using open top chambers (OTC) combined with soil insulation using snow fences during the snow covered months. Drying is achieved using an automated pumping system that lowers the water table in the dry plots. Soil warming began in 2008; OTCs and drying in 2011. PLEASE NOTE that the control (no drying or warming treatment) for DryPEHR comes from the CiPEHR treatment and is thus identical to the CiPEHR WW and SW control. Ie: DryPEHR plot A = CiPEHR plot 2 and DryPEHR control water wells = CiPEHR control water wells.Heterogeneous microtopography as a result of subsidence has caused variable moisture conditions with some plots periodically or continuously flooded during the thawed period and some plots remaining dry. The water dynamics driven by landscape position are difficult to control via experimental pumping and the Control/Dry treatment designations may therefore not be accurate qualitative descriptors. Each treatment contains two adjacent, pseudo-replicated plots, both of which were monitored for phenology. Final values for each plot represent an average value from the two pseudo-replicates (which is why it is possible to have 0.5 flowers or berries).

Methods

FIELD: Phenology of the dominant plant species was monitored throughout the growing season. Plots were surveyed starting after snow-melt through mid-September to determine the day of year (DOY) on which bud burst, and senescence occurred. Once plants had flowered, flowers and berries were counted in the entire plot (0.36m2) for each species. Bud burst was monitored early May to mid June, Flowering early June to mid July, Berries mid July to late August, Senescence late August to mid September. The species observed were: Betula nana (bud, flower, senescence), Carex bigelowii (bud, flower senescence), Rubus chamaemorus (bud, flower, berry, senescence), Vaccinium uliginosum (bud, flower, berry, senescence), Vaccinium vitis-idaea (flower, berry), Eriophorum vaginatum (flower, senescence) and Rhododendron subarcticum (flower). Onset of senescence in B. nana and V. uliginosum was defined as at least one leaf with no green (turning red) and complete senescence when no leaves were green; in C. Bigelowii. E. vaginatum, and R. chamaemorus onset of senescence was defined as at least one leaf with no green (leaves turning yellow) and complete senescence if all leaves were yellow. Flowers were either counted as individual flowers (R. Chamaemorus, V. uliginosum, V. vitis-idaea), infloresence clusters (B. nana, R. subarcticum) or number of flowering tillers (C. Bigelowii, E. vaginatum). Each treatment had two pseudo-replicated subplots. If a phenological event was observed in at least one of these two subplots, that DOY was used to determine first occurrence. For flowers and berries averages were calculated from the two subplots, hence it is possible to have observed 0.5 flowers or berries.

Sampling Area and Study Extent
Sampling Description:

Sampling Frequency

Data was collected every 3-7 days. EV flowers in 2014 were measured from April onward and by 5/23/2014 numbers had stabilized, so flowers were reported for that day. In 2019, a subset of the plots was sampled.

Sampling Extent:
Sampling Site: 
Description:EML -- Tussock tundra at treeline with permafrost thaw and thermokarst. This site is in the Eight Mile Lake Watershed, west of the town of Healy on Stampede Road, Interior Alaska. This area contains three sites on a permafrost thaw gradient and a nearby experimental snow fence manipulation.. Site alternate names:
Site Coordinates:
Longitude (degree): -149.239569Latitude (degree): 63.880708

Time Period
Begin:
2013-05-01
End:
2019-09-16

People and Organizations

Publishers:
Organization:Bonanza Creek LTER
Address:
Boreal Ecology Cooperative Research Unit ,
University of Alaska Fairbanks,
P.O. Box 756780 ,
Fairbanks, AK 99775 USA
Phone:
907-474-6364 (voice)
Phone:
907-474-6251 (fax)
Creators:
Individual: Stephanie Kadej
Position:PhD Student
Address:
Center for Ecosystem Science and Society, POBox 5620,
Flagstaff, AZ 86011 United States
Email Address:
sk2258@nau.edu
Web Address:
https://www2.nau.edu/schuurlab-p/
Individual: Heidi G Rodenhizer
Position:PhD Student
Address:
Northern Arizona University: Ecosystem Science and Society Center (ECOSS) PO Box 5620,
Flagstaff, AZ 86011 United States
Email Address:
hgr7@nau.edu
Web Address:
https://www2.nau.edu/schuurlab-p/
Individual: Marguerite Mauritz
Position:Research Associate Professor
Address:
University of Texas, El Paso, 500 W University,
El Paso, TX 79902 United States
Email Address:
memauritz@utep.edu
Web Address:
https://expertise.utep.edu/profiles/memauritz
Individual: Meghan A. Taylor
Position:Postdoctoral Researcher
Address:
Yale School of Forestry & Environmental Science,
New Haven, CT 06511 United States
Email Address:
meghan.taylor@yale.edu
Web Address:
https://bradfordlab.yale.edu/lab-profiles
Individual: Justin Ledman
Position:Site Technician
Address:
PO Box 18 Healy, AK 99743,
Healy, AK 99743 United States
Phone:
651-895-0474 (voice)
Email Address:
justin.ledman@gmail.com
Individual: Susan M.N. Natali
Position:Affiliate Scientist
Address:
Woods Hole Research Center, 149 Woods Hole Road,
Falmouth, MA 02540 United States
Phone:
508-444-1560 (voice)
Email Address:
snatali@whrc.org
Web Address:
http://www.whrc.org/about/cvs/snatali.html
Individual: Edward A.G. Schuur
Position:Senior Investigator
Address:
Northern Arizona University: Ecosystem Science and Society Center (ECOSS) PO Box 5620,
Flagstaff, AZ 86011 United States
Phone:
(928) 523-8344 (voice)
Email Address:
Ted.Schuur@nau.edu
Web Address:
https://www2.nau.edu/schuurlab-p/
Organization:Bonanza Creek LTER
Address:
Boreal Ecology Cooperative Research Unit ,
University of Alaska Fairbanks,
P.O. Box 756780 ,
Fairbanks, AK 99775 USA
Phone:
907-474-6364 (voice)
Phone:
907-474-6251 (fax)
Email Address:
uaf-bnz-im-team@alaska.edu
Web Address:
http://www.lter.uaf.edu
Contacts:
Organization:Bonanza Creek LTER
Position:Data Manager
Address:
Boreal Ecology Cooperative Research Unit ,
University of Alaska Fairbanks,
P.O. Box 756780 ,
Fairbanks, AK 99775 USA
Phone:
907-474-6364 (voice)
Phone:
907-474-6251 (fax)
Email Address:
uaf-bnz-im-team@alaska.edu
Web Address:
http://www.lter.uaf.edu
Metadata Providers:
Organization:Bonanza Creek LTER
Position:Data Manager
Address:
Boreal Ecology Cooperative Research Unit ,
University of Alaska Fairbanks,
P.O. Box 756780 ,
Fairbanks, AK 99775 USA
Phone:
907-474-6364 (voice)
Phone:
907-474-6251 (fax)
Email Address:
uaf-bnz-im-team@alaska.edu
Web Address:
http://www.lter.uaf.edu

Temporal, Geographic and Taxonomic Coverage

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

Time Period
Begin:
2013-05-01
End:
2019-09-16
Sampling Site: 
Description:Dataset geographic description information is unavailable. {datafile/geoCoverage is empty}
Site Coordinates:
Longitude (degree): -149.225556Latitude (degree): 63.883056

Project

Parent Project Information:

Title:The Bonanza Creek LTER
Personnel:
Individual: Keith Van Cleve
Organization:Bonanza Creek LTER
Position:Lead Principal Investigator
Role:Principal Investigator
Individual: F.S. Stuart Chapin
Organization:Bonanza Creek LTER
Position:Lead Principal Investigator
Address:
Department of Biology and Wildlife; Institute of Arctic Biology: University of Alaska Fairbanks 193 Arctic Health P.O. Box 757000,
Fairbanks, AK 99775 United States
Phone:
(907) 455-6408 (voice)
Phone:
(907) 474-6967 (fax)
Email Address:
terry.chapin@alaska.edu
Web Address:
http://terrychapin.org/
Role:Principal Investigator
Individual: Roger W. Ruess
Organization:Bonanza Creek LTER
Position:Lead Principal Investigator
Address:
Institute of Arctic Biology University of Alaska Fairbanks P.O. Box 757000,
Fairbanks, AK 99775-0180 United States
Phone:
(907) 474-7153 (voice)
Phone:
(907) 474-6967 (fax)
Email Address:
rwruess@alaska.edu
Web Address:
http://www.iab.uaf.edu/~roger_ruess/
Role:Principal Investigator
Funding:

NSF Grant numbers DEB-1636476, DEB-1026415, DEB-0620579, DEB-0423442, DEB-0080609, DEB-9810217, DEB-9211769, DEB-8702629

USDA Forest Service, Pacific Northwest Research Station (Agreement # RJVA-PNW-01-JV-11261952-231)

Maintenance

Maintenance:
Description:

Status

Ongoing

Frequency:
Other Metadata

Additional Metadata

additionalMetadata
        |___text '\n    '
        |___element 'metadata'
        |     |___text '\n      '
        |     |___element 'unitList'
        |     |     |___text '\n        '
        |     |     |___element 'unit'
        |     |     |        \___attribute 'id' = 'DOY'
        |     |     |___text '\n        '
        |     |     |___element 'unit'
        |     |     |        \___attribute 'id' = 'count'
        |     |     |___text '\n        '
        |     |     |___element 'unit'
        |     |     |        \___attribute 'id' = 'gm-2'
        |     |     |___text '\n        '
        |     |     |___element 'unit'
        |     |     |        \___attribute 'id' = 'maxflowers(gbiomass)-1m-2'
        |     |     |___text '\n      '
        |     |___text '\n    '
        |___text '\n  '

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