germination_water {lgrdata}

Seed germination as affected by water

Description

Two datasets on the germination success of seeds of four Melaleuca species, when subjected to temperature, fire cue, and dehydration treatments. Seeds were collected from a number of sites and subjected to 6 temperature treatments and fire cues (in the fire germination data), or two a range of dehydration levels (in the water germination data).

This dataset contains the water treatment data.

Usage

germination_water

Format

A data frame with 352 rows and 5 variables:

species

factor One of four Melaleuca species

site

integer Coding for the site where the seed was collected

water.potential

double Water potential of the seed (Mpa) after incubation (low values is drier)

germ

integer Number of germinated seeds

n

integer Number of seeds tested (25 for all rows)

Source

Data are from Hewitt et al. 2015 (Austral Ecology 40(6):661-671), shared by Charles Morris, and simplified for the purpose of this package.

See Also

germination_fire

Examples

data(germination_water)
with(germination_water,
  plot(jitter(water.potential), germ/n,
    pch=21, bg=terrain.colors(4)[species])
)