lodgepole_phenology_event: Pinus contorta var latifolia flowering events

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

Pinus contorta var latifolia flowering events

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 events.

Usage

lodgepole_phenology_event

Format

A data frame with 15707 rows and 15 variables:

Index

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

State

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

Year

integer Year of observation

DoY

integer Day of year of observation

Event_Label

character Phenological event label. Four types of phenological observations are recorded 1) not yet flowering 2) first flowering observation 3)last flowering observation and 4) flowering is over

Event_Obs

integer Phenological event coded as an integer for modeling purposes

Date

character date of observation

Sex

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

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.