Identifier: knb-lter-sbc.21.17 (in the knb Catalog System)

Data Table

REQUEST DATA:
Available Online:
 Download data after acceptance of SBC LTER Data Use Agreement:
Name: M. pyrifera standing crop, plant density, and loss rates with SE
Description: Macrocystis pyrifera standing crop, plant density and loss rates
Number of Records: 503
Number of Columns: 18
Table Structure:
Object Name: M_pyrifera_standing_crop_plant_density_and_loss_rates_with_SE_20160804.csv
Size: 92 kilobyte
Text Format:
Number of Header Lines: 1
Record Delimiter: \r\n
Orientation: column
Simple Delimited:
Field Delimiter: ,
Collapse Delimiters: no
Table Column Descriptions
  Site Date FSC Wet FSC Dry FSC Carbon FSC Nitrogen Frond Density Plant Density Plant Density Frond loss rate SE FSC Wet SE FSC Dry SE FSC Carbon SE FSC Nitrogen SE Frond Density SE Plant Density SE Plant Loss Rate SE Frond Loss Rate
Column Name Site  
date  
FSC_wet  
FSC_dry  
FSC_carbon  
FSC_nitrogen  
Frond_density  
Plant_density  
Plant_loss_rate  
Frond_loss_rate  
SE_FSC_wet  
SE_FSC_dry  
SE_FSC_carbon  
SE_FSC_nitrogen  
SE_Frond_density  
SE_Plant_density  
SE_Plant_loss_rate  
SE_Frond_loss_rate  
Definition code forsampling location Date of collection The wet mass of the foliar standing crop of M. pyrifera (kg m-2, excluding sporophylls and holdfast). These data are obtained by first calculating the wet mass of each plant, using methods detailed in Section I.B Measuring standing crop, and then dividing the total wet mass of all plants in the plot by the area of the plot. Plants without at least one frond longer than 1m are excluded. The dry mass of the foliar standing crop of M. pyrifera (kg m-2, excluding sporophylls and holdfast). These data are obtained by first calculating the dry mass of each plant, using methods detailed in Section I.B Measuring standing crop, and then dividing the total dry mass of all plants in the plot by the area of the plot. Plants without at least one frond longer than 1m are excluded. The carbon mass of the foliar standing crop of M. pyrifera (kg m-2, excluding sporophylls and holdfast). These data are obtained by first calculating the carbon mass of each plant, using methods detailed in Section I.B Measuring standing crop, and then dividing the total carbon mass of all plants in the plot by the area of the plot. Plants without at least one frond longer than 1m are excluded. The nitrogen mass of the foliar standing crop of M. pyrifera (kg m-2, excluding sporophylls and holdfast). These data are obtained by first calculating the nitrogen mass of each plant, using methods detailed in Section I.B Measuring standing crop, and then dividing the total nitrogen mass of all plants in the plot by the area of the plot. Plants without at least one frond longer than 1m are excluded. The density of M. pyrifera fronds in the plot (number m-2). The density of M. pyrifera plants in the plot (number m-2). Only plants with at least one frond greater than 1m are counted.mv The loss rate of M. pyrifera plants during the sampling interval (fraction of plants lost day-1). These data are based on losses of 10 to15 tagged plants, as described in Section I.B Measuring loss rate. The average loss rate of fronds during the sampling interval (fraction of fronds lost day-1). These data are the mean loss rate of tagged fronds from 10 to15 tagged plants, as described in Section I.B Measuring loss rate. The mean is based on frond loss from plants that survive the period; losses of whole plants are accounted for in the plant loss rate. The standard error in our estimate of foliar standing crop in units of wet mass (kg m-2). This estimate is produced using Monte Carlo methods, as described in Section I.B Quantifying Uncertainty. The error in wet mass includes two types of error. Observer error consists of errors made in the number of plants sampled and in the measurement of their size. Regression errors include variability in the allometric relationships used to calculate the size of the three plant sections, as well as uncertainty in the length:wet-mass conversion ratio The standard error in our estimate of foliar standing crop in units of dry mass (kg m-2). This estimate is produced using Monte Carlo methods, as described in section I.B Quantifying Uncertainty. The error in dry mass includes two types of error. Observer error consists of errors made in the number of plants sampled and in the measurement of their size. Regression errors include variability in the allometric relationships used to calculate the size of the three plant sections, as well as uncertainty in the length:wet-mass and wet-mass:dry-mass conversion ratios. The standard error in our estimate of foliar standing crop in units of carbon mass (kg m-2). This estimate is produced using Monte Carlo methods, as described in Section I.B Quantifying Uncertainty. The error in carbon mass includes two types of error. Observer error consists of errors made in the number of plants sampled and in the measurement of their size. Regression errors include variability in the allometric relationships used to calculate the size of the three plant sections, as well as uncertainty in the length:wet-mass, wet-mass:dry-mass and dry-mass:carbon-mass conversion ratios. The standard error in our estimate of foliar standing crop in units of nitrogen mass (kg m-2). This estimate is produced using Monte Carlo methods, as described in Section I.B Quantifying Uncertainty. The error in nitrogen mass includes two types of error. Observer error consists of errors made in the number of plants sampled and in the measurement of their size. Regression errors include variability in the allometric relationships used to calculate the size of the three plant sections, as well as uncertainty in the length:wet-mass, wet-mass:dry-mass and dry-mass:nitrogen-mass conversion ratios. The standard error in our estimate of M. pyrifera frond density (number m-2). Error in frond density reflects variation in the total number of plants sampled in a plot. This estimate is produced by comparing repeated sampling by different observers of a single plot. The standard error in our estimate of M. pyrifera plant density (number m-2). Error in plant density reflects variation in the total number of plants sampled in a plot. This estimate is produced by comparing repeated sampling by different observers of a single plot. The standard error in our estimate of M. pyrifera plant loss (day-1). This error is sampling error associated with calculating a mean loss rate for the entire plot based on 10 to15 tagged plants. The standard error in the calculated rate of frond loss (day-1). This error is sampling error associated with calculating a mean loss rate for the entire plot based on 10 to15 tagged plants.
Storage Type string  
date  
integer  
decimal  
decimal  
decimal  
decimal  
decimal  
decimal  
decimal  
decimal  
decimal  
decimal  
decimal  
decimal  
decimal  
decimal  
decimal  
Measurement Type nominal dateTime ratio ratio ratio ratio ratio ratio ratio ratio ratio ratio ratio ratio ratio ratio ratio ratio
Measurement Values Domain
Allowed values and definitions
Format YYYY-MM-DD
Precision 1
Unit kilogramPerMeterSquared
Precision 0
Type real
Min
Max 100000 
Unit kilogramPerMeterSquared
Precision 0
Type real
Min
Max 100000 
Unit kilogramPerMeterSquared
Precision 0
Type real
Min
Max 100000 
Unit kilogramPerMeterSquared
Precision 0
Type real
Min
Max 100000 
Unit numberPerMeterSquared
Precision 0
Type real
Min
Max 100000 
Unit numberPerMeterSquared
Precision 0
Type real
Min
Max 100000 
Unit reciprocalDay
Precision 0
Type real
Min
Max 100000 
Unit reciprocalDay
Precision 0
Type real
Min
Max 100000 
Unit kilogramPerMeterSquared
Precision 0
Type real
Min
Max 100000 
Unit kilogramPerMeterSquared
Precision 0
Type real
Min
Max 100000 
Unit kilogramPerMeterSquared
Precision 0
Type real
Min
Max 100000 
Unit kilogramPerMeterSquared
Precision 0
Type real
Min
Max 100000 
Unit numberPerMeterSquared
Precision 0
Type real
Min
Max 100000 
Unit numberPerMeterSquared
Precision 0
Type real
Min
Max 100000 
Unit reciprocalDay
Precision 0
Type real
Min
Max 100000 
Unit reciprocalDay
Precision 0
Type real
Min
Max 100000 
Missing Value Code
Code -99999
Expl no information available
Code -99999
Expl no information available
Code -99999
Expl not available, or not collected
Code -99999
Expl not available, or not collected
Code -99999
Expl not available, or not collected
Code -99999
Expl not available, or not collected
Code -99999
Expl not available, or not collected
Code -99999
Expl not available, or not collected
Code -99999
Expl not available, or not collected
Code -99999
Expl not available, or not collected
Code -99999
Expl not available, or not collected
Code -99999
Expl not available, or not collected
Code -99999
Expl not available, or not collected
Code -99999
Expl not available, or not collected
Code -99999
Expl not available, or not collected
Code -99999
Expl not available, or not collected
Code -99999
Expl not available, or not collected
Code -99999
Expl not available, or not collected
Accuracy Report                                    
Accuracy Assessment                                    
Coverage Coverage Info                                  
Methods