Mammalian herbivory in Romanian exploratory

Usage Rights

This data is Free within projects.

Dataset Abstract

Mammalian herbivores are important drivers of plant species composition in forests, and at high densities of herbivore browsing pressure can have effects on regeneration of tree species, including mortality of saplings, and lead to a dominance of one understorey plant species (usually a species tolerant to browsing). In production forests herbivory can have detrimental effects on timber quality and success of regeneration stages. Existing empirical evidence for the effect of forest plant species diversity is scare and largely comes from observational studies or small feeding trial experiments. As most mammal herbivores are generalists it is predicted trees and woody plants will be more susceptible to browsing when growing in an environment with more plant species (i.e. food sources). This task will try to elucidate the links between forest characteristics and mammalian herbivory and whether the potential increase in herbivory outwieghs other benefits of forest diversity such as resistance to insect herbivores. Mammal herbivores present in the Romanian exploratory: Red deer (Cervus elaphus), Roe deer (Capreolus capreolus), and Wild boar (Sus scrofa).

Dataset Design

At each plot mammalian browsing on tree saplings and other woody plant species is assessed in four subplots (5m x 5m). Per browsed plant the percentage of available shoots browsed is estimated, and the lower and upper height limits of browsed twigs recorded. Plant diamter is recorded. Additionally per subplot all woody species are identified and the number of individuals and percentage cover per species recorded. At each plot phytometers of Task II.3 are assessed for browsing damage and/or removal by wild boar. At the plot level faecal pellet groups are counted and GPS marked, and wild boar rooting depth and percentage area of plot rooted have been recorded.

Spatial Extent

Romania

Measurement Circumstances

Are there circumstances that explain the precision of your measurements? Could it be that a sandstorm destroyed part of the plots in a given year?

Data columns available in the raw data part of this dataset

plot
unique number for each plot
Data group: Exploratory plot id
Values
ROM04
ROM03
ROM01
ROM05
ROM02
treat
plot treatment - focal tree species in the plot
Data group: Treatment
Values
BM
F
FBM
B
FB
Trich
number of focal tree species in plot
Data group: Species richness
Keywords: diversity
Values
4
1
2
3
Tdiv
Shannon diversity index of plot based on focal tree species
Data group: Diversity measure
Keywords: diversity, diversity indices
Values
0.279055796
0.509458556
0.423119963
0
0.247750827
elevation
Plot elevation (above sea level)
Data group: Plot descriptor
Alert Sample values are not displayed because this column hasn't been approved yet.
distancewater
Distance from centre of plot to nearest water source
Data group: Plot descriptor
Alert Sample values are not displayed because this column hasn't been approved yet.
distanceroad
Distance from centre of plot to nearest large road
Data group: Plot descriptor
Alert Sample values are not displayed because this column hasn't been approved yet.
landuse
Landuse class that plot is situated within
Data group: Plot descriptor
Alert Sample values are not displayed because this column hasn't been approved yet.
forestcover
Percentage forest cover at plot location based on Europe-wide GIS layer
Data group: Plot descriptor
Alert Sample values are not displayed because this column hasn't been approved yet.
PresenceC
Presence of conifer species in plot; Datagroup description: Presence data
Data group: Presence data
Values
0
1
PresenceB
Presence of Beech; Datagroup description: Presence data
Data group: Presence data
Values
1
0
Tdens
tree density of plot
Data group: Plot descriptor
Values
37
34
35
28
31
Tdom
dominant focal tree species
Data group: Plot descriptor
Values
FS
AA
PA
APS
slope
slope level of plot
Data group: Plot descriptor
Values
1
3
2
Urich
understorey woody species richness - number of species based on subplot sampling
Data group: Species richness
Keywords: diversity
Values
2
4
5
3
1.9999999999999998
Udiv
Shannon diversity index of understorey woody species per plot
Data group: Diversity measure
Keywords: diversity, diversity indices
Values
0.686
0.652
0.522
0.69
0.684
Ucover
average percentage cover by all understorey woody species based on four subplots
Data group: Species composition
Values
10
12.75
14.5
10.5
14.25
Udom
dominant understorey woody species
Data group: Understorey species code
Values
NONE
FS/AA
AA
APS
FS
Uindivid
number of individual understorey plants in all subplots
Data group: Plot descriptor
Values
126
119
123
122
124
Unum_brwsd
number of understorey woody species browsed
Data group: Performance
Keywords: herbivory
Values
2
0
1
3
Ubintensity
average browsing intensity of all understorey woody species in subplots
Data group: Performance
Keywords: herbivory
Values
19
0
16.0625
20
15
Ubnumber
number of individual understorey plants browsed in subplots
Data group: Performance
Keywords: herbivory
Values
1
11
12
0
16
Ubpercent
percentage of individual understorey plants browsed
Data group: Performance
Keywords: herbivory
Values
1.1627906976744187
2.73972602739726
19.047619047619047
1.5151515151515151
0
APS
number of Acer pseudoplatanus plants
Data group: Species composition
Keywords: herbivory
Values
19
0
13
2
1
CA
number of Corylus avellana plants
Data group: Species composition
Keywords: herbivory
Values
4
1
6
2
0
AI
number of Alnus incana plants
Data group: Species composition
Keywords: herbivory
Values
0
1
10
RH
number of Rubus hirtus plants
Data group: Species composition
Keywords: herbivory
Values
3
2
1
0
4
AA
number of Abies alba plants
Data group: Species composition
Keywords: herbivory
Values
0
107
11
10
1
RC
number of Rosa canina plants
Data group: Species composition
Keywords: herbivory
Values
1
0
FS
number of Fagus sylvatica plants
Data group: Species composition
Keywords: herbivory
Values
11
101
10
17
2
FE
number of Fraxinus excelsior plants
Data group: Species composition
Keywords: herbivory
Values
0
17
26
16
1
SN
number of Sambucus nigra plants
Data group: Species composition
Keywords: herbivory
Values
3
0
1
4
UM
number of Ulmus minor plants
Data group: Species composition
Keywords: herbivory
Values
0
16
11
1
AP
number of Acer platanoides plants
Data group: Species composition
Keywords: herbivory
Values
15
3
2
11
0
PA
number of Picea abies plants
Data group: Species composition
Keywords: herbivory
Values
6
1
2
0
CB
number of Carpinus betulus plants
Data group: Species composition
Keywords: herbivory
Values
0
6
Apsb
number of browsed Acer pseudoplatanus plants
Data group: Performance
Keywords: herbivory
Values
3
0
8
Aab
number of browsed Abies alba
Data group: Performance
Keywords: herbivory
Values
1
9
0
4
2
Fsb
number of browsed Fagus sylvatica
Data group: Performance
Keywords: herbivory
Values
4
1
0
Umb
number of browsed Ulmus minor
Data group: Performance
Keywords: herbivory
Values
6
7
0
Cbb
number of browsed Carpinus betulus
Data group: Performance
Keywords: herbivory
Values
0
1
percentAps
percentage of Acerpseudoplatanus plants browsed
Data group: Performance
Keywords: herbivory
Values
NA
12.698412698412698
0
7.142857142857142
11.11111111111111
percentAa
percentage of Abies alba plants browsed
Data group: Performance
Keywords: herbivory
Values
13.333333333333334
0
1.2987012987012987
1.6666666666666667
18.181818181818183
percentFs
percentage of Fagus sylvatica plants browsed
Data group: Performance
Keywords: herbivory
Values
0
5.263157894736842
2.2222222222222223
1.4925373134328357
percentUm
percentage of Ulmus minor plants browsed
Data group: Performance
Keywords: herbivory
Values
NA
63.63636363636363
0
37.5
percentCb
percentage of Carpinus betulus plants browsed
Data group: Performance
Keywords: herbivory
Values
16.666666666666664
NA
Red
number of Red deer faecal pellets recorded in subplots
Data group: Herbivory data
Keywords: herbivory
Values
1
2
0
Roe
number of Roe deer faecal pellets recorded in subplots
Data group: Herbivory data
Keywords: herbivory
Values
1
2
0