Genetic Diversity and Population Dynamics in Tropical Flora
Summary
Tropical forests harbour an extraordinary array of plant species whose long‐term viability depends on the interplay between genetic diversity and population dynamics. Genetic diversity refers to the total repertoire of genes within and among populations, underpinning the capacity to adapt to changing environments and resist disease. In tropical flora, complex patterns of gene flow, local adaptation and demographic fluctuation shape spatial genetic structure at multiple scales. Past climatic oscillations and geological events have driven range shifts and the formation of refugia, while contemporary threats such as deforestation, fragmentation and land‐use change disrupt connectivity, reduce effective population sizes and accelerate genetic erosion. Insights into these processes are essential for guiding conservation planning, sustainable management of non‐timber forest products and the restoration of degraded landscapes in tropical regions worldwide.
Research from Nature Portfolio
Integrating genetic data with geospatial assessment has refined the evaluation of extinction risk for a poorly known legume tree endemic to the Atlantic Forest. By coupling species distribution models derived from herbarium records with population genetic analyses, researchers demonstrated that the species exhibits low genetic diversity, high inbreeding and historical population decline. Future climate projections predict further range contraction, indicating that conservation measures must explicitly incorporate genetic information to identify and safeguard populations with the highest adaptive potential and to inform both in situ protection and ex situ germplasm banking strategies.
Genetic Diversity and Population Dynamics in Tropical Flora publication trend
The graph below shows the total number of articles in genetic diversity and population dynamics in tropical flora across all publications each year (not limited to Nature Index journals).
Technical terms
Genetic diversity: The variation of heritable traits within and among populations, crucial for adaptation and resilience.
Gene flow: The movement of alleles between populations, promoting genetic connectivity and reducing inbreeding.
Population structure: The spatial distribution of genetic variation that reflects historical and contemporary processes.
Single-nucleotide polymorphism (SNP): A single base‐pair change in the genome used as a marker to study genetic variation.
Microsatellite marker: A short, tandemly repeated DNA sequence used to assess genetic diversity and relationships among individuals.
References
- Genetic data improve the assessment of the conservation status based only on herbarium records of a Neotropical tree. Scientific Reports (2019).
- Genome-wide SNP analysis to assess the genetic population structure and diversity of Acrocomia species. PLOS ONE (2021).
- Genetic Structure in Populations of Euterpe precatoria Mart. in the Brazilian Amazon. Frontiers in Ecology and Evolution (2021).
- Hybrid zone of a tree in a Cerrado/Atlantic Forest ecotone as a hotspot of genetic diversity and conservation. Ecology and Evolution (2022).
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