beetle: ground beetle assemblages

In gllvm: Generalized Linear Latent Variable Models

ground beetle assemblages

Description

These data describe the abundance of ground beetle assemblages from the Scottish landscape alongside with the environmental data and species traits. The data includes abundances of 68 species of ground beetle species.

Usage

data(beetle)

Format

Y

A data frame of species composition of the ground-beetle assemblages.

X

A data frame of study design variables and environmental data.

SiteCode

Unique id for sample.

Landuse

Land use type.

Grid

Grid where sample were collected.

Area

sampling area in Scotland.

Samplingyear

Sampling year

Texture

1, peat; 2, peaty loam; 3, loamy sand; 4, sandy loam; 5, sandy clay loam; 6, sandy silt loam; 7, silty clay

Org

organic content (% loss of organic content on ignition), log10 transformed

pH

soil pH

AvailP

available P (mg/L), log10 transformed

AvailK

available K (mg/L)

Moist

percentage moisture content

Bare

percentage cover estimate of bare ground in 11 1-m2 quadrats, arcsine transformed

Litter

percentage cover estimate of litter cover in 11 1-m2 quadrats, log10 transformed

Bryophyte

percentage cover estimate of bryophytes in 11 1-m2 quadrats, arcsine transformed

Plants.m2

number of reproductive stems (flowering or fruiting) in 11 1-m2 quadrats

Canopy

height canopy height (cm) in 11 1-m2 quadrats

Stemdensity

number of stems (ramets) in 100 cm2

Biom_l5

dry mass (g) of biomass 0–5 cm from soil surface in 400 cm2

Biom_m5

dry mass (g) of biomass .5 cm from soil surface in 400 cm2, log10 transformed

Reprobiom

biomass of reproductive parts (flowers and fruits) in 100 cm2, log10 transformed

Elevation

elevation in m a.s.l.

Management

management intensity index (see Materials and Methods: Environmental data)

TR

A data frame of the species names and species morphological and life trait characteristics.

SPECIES

Species names.

CODE

Species codes corresponding species names in abundance matrix

LYW

diameter of the eye, measured from above

LAL

length of the antenna

LPW

maximum width of the pronotum

LPH

maximum depth (“vaulting”) of the pronotum

LEW

maximum width of the elytra

LFL

length of the metafemur (with the articulation segments), from the coxa to the apex

LTR

length of the metatrochanter

LRL

length of the metatarsi

LFW

maximum width of the metafemur

LTL

total length (length of the pronotum in the medial line plus length of the elytra, from the medial ridge of the scutellum to the apex)

CLG

color of the legs (1, pale; 2, black; 3, metallic)

CLB

color of the body (1, pale; 2, black; 3, metallic)

WIN

wing development (1, apterous or brachypterous; 2, dimorphic; 3, macropterous)

PRS

shape of the pronotum (1, oval; 2, cordiform; 3, trapezoidal)

OVE

overwintering (1, only adults; 2, adults and larvae or only larvae)

FOA

food of the adult (1, mostly Collembola; 2, generalist predator; 3, mostly plant material)

DAY

daily activity (1, only diurnal; 2, nocturnal)

BRE

breeding season (1, spring; 2, summer; 3, autumn or winter)

EME

main period of emergence of the adults (1, spring; 2, summer; 3, autumn)

ACT

main period of adult activity (1, autumn; 2, summer only)

Details

Beetles were sampled with two parallel rows of nine pitfall traps (diameter 7.5 cm, 2 m apart) at each site, starting in early May.

Detailed description of the data available in the reference and in the Ecological Archives E082-012.

References

Ignacio Ribera, Sylvain Dolédec, Iain S. Downie, and Garth N. Foster. 2001. Effect of land disturbance and stress on species traits of ground beetle assemblages. Ecology 82:1112-1129.

Examples

## Not run: 
data(beetle)
# Abundance matrix
Y <- beetle$Y
# Environmental data
X <- beetle$X
# Species traits
TR <- beetle$TR

## End(Not run)

gllvm documentation built on April 3, 2025, 6:09 p.m.