lodgepole_phenology_state: Pinus contorta var latifolia flowering states

In scisus/flowers: Phenology of Lodgepole Pine Pollen Shed and Cone Receptivity

Pinus contorta var latifolia flowering states

Description

This dataset contains reproductive phenological data for lodgepole pine (Pinus contorta subsp. latifolia) grown in commercial and government seed orchards at 7 sites in British Columbia, Canada (Figure 1). Data was collected between 1997 and 2012. Seed orchards measured pollen shed, cone receptivity, date cones were picked, and the weight of the cones. Not all orchards measured all variables in all years. This dataset contains only cleaned, harmonized, and formatted pollen shed and cone receptivity phenology data. It records observations as states and also contains pre-harmonization coding in Phenophase_Recorded column.

Usage

lodgepole_phenology_state

Format

A data frame with 29058 rows and 14 variables:

Index

integer A unique identifier that discriminates between males and females of each tree in each year.

DoY

integer Day of year of observation

Date

character date of observation

Phenophase_Recorded

character pre-harmonization state coding (from original data sheets)

State

integer harmonized phenological state coding. 1 for not yet flowering, 2 for flowering, 3 for finished flowering. 0 indicates no flowers.

Sex

character whether the observation is for pollen shed (MALE) or cone receptivity (FEMALE)

Year

integer Year of observation

Site

character Seed orchard site where observation was made

Orchard

integer Orchard identifer within a seed orchard site

Genotype

integer Genotype identifier (corresponds to "Clone" label in Seed Orchard operations)

Tree

integer Internal identifier for an individual tree (ramet in seed orchard operations). Not unique or always assigned.

X

character part of a grid identifier system for tree locations within orchards

Y

integer part of a grid identifier system for tree locations within orchards

Source

character Whether data provided by Wagner or Walsh

Source

Phenology data was originally collected for the Operational Tree Improvement Program as part of an effort to explain variation in seed production between orchards. Data was collated from multiple orchards and cleaned in order to build phenological models of pollen shed and cone receptivity in lodgepole pine. Raw data provided by Chris Walsh at Kalamalka Seed Orchards and Rita Wagner at Prince George Tree Improvement Station, both with the BC Ministry of Forests, Lands and Natural Resource Operations. Data cleaned, harmonized, and formatted by C. Susannah Tysor while at the University of British Columbia. susannah at pobox.com

scisus/flowers documentation built on Feb. 8, 2024, 3:58 p.m.