The Scotch broom, Cytisus scoparius (Fabaceae), a paradox in Denmark – an invasive plant or endangered native species?
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The Scotch broom, Cytisus scoparius (Fabaceae), a paradox in Denmark – an invasive plant or endangered native species? / Rosenmeier, Lars; Kjær, Erik Dahl; Nielsen, Lene Rostgaard.
In: Botanical Journal of the Linnean Society, Vol. 171, No. 2, 2013, p. 429-440.Research output: Contribution to journal › Journal article › Research › peer-review
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T1 - The Scotch broom, Cytisus scoparius (Fabaceae), a paradox in Denmark – an invasive plant or endangered native species?
AU - Rosenmeier, Lars
AU - Kjær, Erik Dahl
AU - Nielsen, Lene Rostgaard
PY - 2013
Y1 - 2013
N2 - Scotch broom, Cytisus scoparius, spreads rapidly in parts of Denmark and is considered an invasive species by someauthors. However, the species has been present in the Danish flora for centuries and is therefore considered nativeto Denmark. In the present study we explore whether Danish Scotch broom consists of one or two gene pools withpotential differences in phenotype and invasiveness. One plastid and five nuclear microsatellite markers were usedto reveal potential substructuring of Danish Scotch broom. Nine populations were included representing populationsexhibiting invasive behaviour and populations showing non-invasive behaviour. An Italian population wasused as reference. Bayesian analysis based on genetic markers indicated that the sampled populations form twodistinct gene pools, and this pattern was supported by neighbour-joining trees. Measurements of height and widthof the analysed plants showed that the two gene pools correspond to populations exhibiting either a horizontalhabit and non-invasive behaviour or an erect habit and, in some cases, invasive behaviour. The Italian populationclustered with the erect ones. We discuss the origin and taxonomic status of the two gene pools and conclude thatDanish horizontal Scotch broom should be given a formal taxonomic status in order to initiate conservationactivities for its protection.
AB - Scotch broom, Cytisus scoparius, spreads rapidly in parts of Denmark and is considered an invasive species by someauthors. However, the species has been present in the Danish flora for centuries and is therefore considered nativeto Denmark. In the present study we explore whether Danish Scotch broom consists of one or two gene pools withpotential differences in phenotype and invasiveness. One plastid and five nuclear microsatellite markers were usedto reveal potential substructuring of Danish Scotch broom. Nine populations were included representing populationsexhibiting invasive behaviour and populations showing non-invasive behaviour. An Italian population wasused as reference. Bayesian analysis based on genetic markers indicated that the sampled populations form twodistinct gene pools, and this pattern was supported by neighbour-joining trees. Measurements of height and widthof the analysed plants showed that the two gene pools correspond to populations exhibiting either a horizontalhabit and non-invasive behaviour or an erect habit and, in some cases, invasive behaviour. The Italian populationclustered with the erect ones. We discuss the origin and taxonomic status of the two gene pools and conclude thatDanish horizontal Scotch broom should be given a formal taxonomic status in order to initiate conservationactivities for its protection.
U2 - 10.1111/j.1095-8339.2012.01319.x
DO - 10.1111/j.1095-8339.2012.01319.x
M3 - Journal article
VL - 171
SP - 429
EP - 440
JO - Botanical Journal of the Linnean Society
JF - Botanical Journal of the Linnean Society
SN - 0024-4074
IS - 2
ER -
ID: 44533979