10.5061/DRYAD.147R0
Aavik, Tsipe
University of Tartu
Holderegger, Rolf
Swiss Federal Institute of Technology in Zurich
Bolliger, Janine
Swiss Federal Institute for Forest, Snow and Landscape Research
Data from: The structural and functional connectivity of the grassland
plant Lychnis flos-cuculi
Dryad
dataset
2013
Inbreeding
Lychnis flos-cuculi
2013-10-21T16:42:51Z
2013-10-21T16:42:51Z
en
https://doi.org/10.1038/hdy.2013.120
176727 bytes
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CC0 1.0 Universal (CC0 1.0) Public Domain Dedication
Understanding the relationship between structural and functional
connectivity is essential for successful restoration and conservation
management, particularly in intensely managed agricultural landscapes. We
evaluated the relationship between structural and functional connectivity
of the wetland plant Lychnis flos-cuculi in a fragmented agricultural
landscape using landscape genetic and network approaches. First, we
studied the effect of structural connectivity, such as geographic distance
and various landscape elements (forest, agricultural land, settlements and
ditch verges), on gene flow among populations as a measurement of
functional connectivity. Second, we examined the effect of structural
graph-theoretic connectivity measures on gene flow among populations and
on genetic diversity within populations of L. flos-cuculi. Among landscape
elements, forests hindered gene flow in L. flos-cuculi, whereas gene flow
was independent of geographic distance. Among the structural
graph-theoretic connectivity variables, only intrapopulation connectivity,
which was based on population size, had a significant positive effect on
gene flow, that is, more gene flow took place among larger populations.
Unexpectedly, interpopulation connectivity of populations, which takes
into account the spatial location and distance among populations, did not
influence gene flow in L. flos-cuculi. However, higher observed
heterozygosity and lower inbreeding was observed in populations
characterised by higher structural interpopulation connectivity. This
finding shows that a spatially coherent network of populations is
significant for maintaining the genetic diversity of populations.
Nevertheless, lack of significant relationships between gene flow and most
of the structural connectivity measures suggests that structural
connectivity does not necessarily correspond to functional connectivity.
genotypesgeneflow_landscape_variablesThe table contains landscape
variables measured within the corridors between the study populations of
Lychnis flos-cuculi in Oberaargau region, Switzerland. The corridors had
different widths, which have been indicated in variable names: 50, 100,
300, 500 and 1000 meters. Columns include the proportion of the following
landscape variables measured within corridors: forests (indicated as
"forest" in the column name), settlements
("settlement"), the verges of ditches, streams and rivers
("water") and agricultural land ("agri"). Landscape
variables were measured using VECTOR25 data by Swisstopo. In addition to
landscape variables, the table includes cumulative elevation change
between the study populations (in meters) as well as Euclidean distance
between populations (in meters). The table also includes the measure of
gene flow used in the study - genetic differentiation Fst.
Oberaargau region Switzerland