Abstract
Church forests in Ethiopia are remnants of once continuous forests and provide a unique opportunity to investigate how human-driven isolation and small population sizes influence the genetic diversity and structure of tree species. This study investigated three indigenous tree species of high conservation priority in Ethiopia that constitute a considerable and important part of church forests: Afrocarpus gracilior , Juniperus procera , and Olea europaea subsp. cuspidata . A total of 237 A. gracilior , 466 J. procera , and 341 O. europaea trees were sampled across multiple church and natural/non-church reference forests to determine the genetic diversity and population structure using DNA markers. The level of diversity varied among species and between populations within species. Afrocarpus gracilior populations exhibited low genetic diversity, small effective population sizes, and high inbreeding, indicating vulnerability and limited suitability as standalone seed sources. Maintaining variability requires combining multiple populations. Juniperus procera and O. europaea populations showed high genetic diversity, but some showed moderate inbreeding and relatively low effective population sizes, highlighting the need for population-level prioritization in forest management and restoration. These findings emphasize that conservation and forest restoration strategies cannot be generalized across species. Species-specific investigations and tailored management approaches are essential for maintaining genetic diversity and supporting long-term forest resilience.
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Claims 7
Claim · model-written summary
Genetic diversity varied among species and among populations within species.
- Outcome
- diversitye0
Not reportedTaxon
Verbatim
e0“The level of diversity varied among species and between populations within species.”
Claim · model-written summary
Afrocarpus gracilior populations had low genetic diversity, small effective population sizes and high inbreeding.
- Taxon
- Afrocarpus gracilior
Afrocarpus graciliore0 - Outcome
- low genetic diversity, small effective population sizes, and high inbreedinge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Afrocarpus gracilior populations exhibited low genetic diversity, small effective population sizes, and high inbreeding”
Claim · model-written summary
Juniperus procera populations showed high genetic diversity, while some had moderate inbreeding and relatively low effective population sizes.
- Taxon
- Juniperus procera
Juniperus procerae0 - Outcome
- high genetic diversitye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Juniperus procera and O. europaea populations showed high genetic diversity, but some showed moderate inbreeding and relatively low effective population sizes”
Claim · model-written summary
O. europaea populations showed high genetic diversity, while some had moderate inbreeding and relatively low effective population sizes.
- Taxon
- O. europaea
Olea europaeae0 - Outcome
- high genetic diversitye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Juniperus procera and O. europaea populations showed high genetic diversity, but some showed moderate inbreeding and relatively low effective population sizes”
Claim · model-written summary
Multiple Afrocarpus gracilior populations should be combined to maintain variability.
- Outcome
- combining multiple populationse0
Not reportedTaxon
Verbatim
e0“Maintaining variability requires combining multiple populations.”
Claim · model-written summary
Forest management and restoration should prioritize Juniperus procera and O. europaea populations individually.
- Outcome
- population-level prioritization in forest management and restoratione0
Not reportedTaxon
Verbatim
e0“highlighting the need for population-level prioritization in forest management and restoration.”
Claim · model-written summary
Conservation and forest restoration should use species-specific investigations and tailored management.
- Outcome
- Species-specific investigations and tailored management approachese0
Not reportedTaxon
Verbatim
e0“Species-specific investigations and tailored management approaches are essential for maintaining genetic diversity and supporting long-term forest resilience.”