Levanger: Levanger
In oharar/LatentINLA: Package to Write GLLVMs in INLA
Levanger R Documentation
Levanger
Description
Data on plant coverage in semi-natural grasslands from around Levanger, Norway
Usage
Levanger
Format
A list with two data frames. species contains percent cover of 90
species, site contains site 35 covariates (including plotID and date).
The data are by row and column abundance.
This data set contains data on vascular plant species in semi-natural
grasslands in a study area in Levanger, Norway. The extent of the study area
was about 4 km × 5 km. The vegetation was recorded in 1 m × 1 m plots using
a restricted random sampling design and the dataset includes data from 132
such plots.
The coordinates for each plot were randomly drawn within the study area but
only plots located within a semi-natural meadow was included in the final
dataset. The random sampling was restricted by dividing the study area into
five equally sized units and requiring an equal number of plots within each
of these. The study area and the management of the grasslands are also described in
Johansen et al. (2016).
In the sampling plots, the cover of all vascular
plant species was recorded as percentage cover and these are the numbers
presented in the dataset. The total cover within a plot was allowed to
exceed 100
In addition to the plant cover data, a number of environmental variables
were recorded for each plot. The environmental variables can be found to
the right in the dataset, and include variables scored by visual assessment
in the field and results from lab analysis of soil samples. Separated soil
samples were collected from 0-10 cm and 10-20 cm soil depth. Each soil
sample included soil from nine different subsamples taken just outside
the 1 m × 1 m plots. The soil samples were analysed for pH and organic
matter content (OM) according to standard methods. The
ammonium-acetate-lactate method (–AL) described by Egner et al. (1960) was
used to estimate the content of plant available P, K, Mg and Ca in the soil
samples. The units for all plant available nutrients are mg 100 g^-1.
Source
oharar/LatentINLA documentation built on Sept. 13, 2023, 5:18 p.m.
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| Levanger | R Documentation |
Levanger
Description
Data on plant coverage in semi-natural grasslands from around Levanger, Norway
Usage
Levanger
Format
A list with two data frames. species contains percent cover of 90 species, site contains site 35 covariates (including plotID and date). The data are by row and column abundance.
This data set contains data on vascular plant species in semi-natural grasslands in a study area in Levanger, Norway. The extent of the study area was about 4 km × 5 km. The vegetation was recorded in 1 m × 1 m plots using a restricted random sampling design and the dataset includes data from 132 such plots.
The coordinates for each plot were randomly drawn within the study area but only plots located within a semi-natural meadow was included in the final dataset. The random sampling was restricted by dividing the study area into five equally sized units and requiring an equal number of plots within each of these. The study area and the management of the grasslands are also described in Johansen et al. (2016).
In the sampling plots, the cover of all vascular plant species was recorded as percentage cover and these are the numbers presented in the dataset. The total cover within a plot was allowed to exceed 100
In addition to the plant cover data, a number of environmental variables were recorded for each plot. The environmental variables can be found to the right in the dataset, and include variables scored by visual assessment in the field and results from lab analysis of soil samples. Separated soil samples were collected from 0-10 cm and 10-20 cm soil depth. Each soil sample included soil from nine different subsamples taken just outside the 1 m × 1 m plots. The soil samples were analysed for pH and organic matter content (OM) according to standard methods. The ammonium-acetate-lactate method (–AL) described by Egner et al. (1960) was used to estimate the content of plant available P, K, Mg and Ca in the soil samples. The units for all plant available nutrients are mg 100 g^-1.
Source
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