Genetic Diversity and Conservation of Black Poplar Populations
Summary
Black poplar (Populus nigra) is a keystone riparian tree species across Europe and parts of western Asia, valued for its ecological function in floodplain dynamics and habitat provision. Over the past century, river regulation, land-use change and introduction of exotic Populus hybrids have eroded native stands, leading to habitat fragmentation, genetic erosion and risk of hybrid introgression. Conservation efforts increasingly combine in situ protection of remnant populations with ex situ propagation of genetically representative material. Advances in molecular marker technologies have revealed spatial patterns of genetic variation, highlighted the influence of historical colonisation events and local adaptation, and informed the delineation of genetic conservation units. Restoration programmes that reintroduce genetically diverse seedlings into dynamic floodplains can restore natural gene pools and reduce the impact of exotic gene flow. Integration of habitat management, monitoring of effective population sizes and strategic seed collection underpins long-term recovery and resilience of black poplar across its range.
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Genetic Diversity and Conservation of Black Poplar Populations publication trend
The graph below shows the total number of articles in genetic diversity and conservation of black poplar populations across all publications each year (not limited to Nature Index journals).
Technical terms
Genetic diversity: The total number of genetic characteristics in the genetic makeup of a species, reflecting its capacity to adapt to environmental change.
Effective population size (Ne): The size of an idealised population that would lose genetic variation due to drift at the same rate as the observed population, influencing inbreeding risk.
Microsatellite markers: Short, tandemly repeated DNA sequences used to assess levels of genetic variation and population structure.
Clonal diversity: The proportion of distinct genotypes within a population that reproduces both sexually and vegetatively.
Introgression: The incorporation of genes from one species or population into the gene pool of another through repeated backcrossing.
References
- Genetic and morphological differentiation in Populus nigra L.: isolation by colonization or isolation by adaptation?. Molecular Ecology (2015).
- Reintroduced Native Populus nigra in Restored Floodplain Reduces Spread of Exotic Poplar Species. Frontiers in Plant Science (2021).
- Low effective population size and high spatial genetic structure of black poplar populations from the Oder valley in Poland. Annals of Forest Science (2021).
- Genetic structure of the old black poplar population along the bank of the Vistula River in Poland. Acta Societatis Botanicorum Poloniae (2016).
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