Genetic diversity of the rain tree (Albizia saman) in Colombian seasonally dry tropical forest for informing conservation and restoration interventions
Abstract Albizia saman is a multipurpose tree species of seasonally dry tropical forests (SDTFs) of Mesoamerica and northern South America typically cultivated in silvopastoral and other agroforestry systems around the world, a trend that is bound to increase in light of multimillion hectare commitm...
Main Authors: | , , , , , , , |
---|---|
Format: | Article |
Language: | English |
Published: |
Wiley
2020-02-01
|
Series: | Ecology and Evolution |
Subjects: | |
Online Access: | https://doi.org/10.1002/ece3.6005 |
id |
doaj-94102a764f4e4f12b1efa002b56aae74 |
---|---|
record_format |
Article |
spelling |
doaj-94102a764f4e4f12b1efa002b56aae742021-04-02T14:46:45ZengWileyEcology and Evolution2045-77582020-02-011041905191610.1002/ece3.6005Genetic diversity of the rain tree (Albizia saman) in Colombian seasonally dry tropical forest for informing conservation and restoration interventionsCarolina Adriana Aguirre‐Morales0Evert Thomas1Carlos Ivan Cardozo2Janeth Gutiérrez3Carolina Alcázar Caicedo4Luis Gonzalo Moscoso Higuita5Luis Augusto Becerra López‐Lavalle6Mailyn Adriana González7Universidad Nacional de Colombia Sede Palmira Palmira ColombiaBioversity International Lima PeruUniversidad Nacional de Colombia Sede Palmira Palmira ColombiaInternational Center for Tropical Agriculture Cali ColombiaBioversity International Cali ColombiaForestpa SAS Medellín ColombiaInternational Center for Tropical Agriculture Cali ColombiaInstituto de Investigación de Recursos Biológicos Alexander von Humboldt Bogotá ColombiaAbstract Albizia saman is a multipurpose tree species of seasonally dry tropical forests (SDTFs) of Mesoamerica and northern South America typically cultivated in silvopastoral and other agroforestry systems around the world, a trend that is bound to increase in light of multimillion hectare commitments for forest and landscape restoration. The effective conservation and sustainable use of A. saman requires detailed knowledge of its genetic diversity across its native distribution range of which surprisingly little is known to date. We assessed the genetic diversity and structure of A.saman across twelve representative locations of SDTF in Colombia, and how they may have been shaped by past climatic changes and human influence. We found four different genetic groups which may be the result of differentiation due to isolation of populations in preglacial times. The current distribution and mixture of genetic groups across STDF fragments we observed might be the result of range expansion of SDTFs during the last glacial period followed by range contraction during the Holocene and human‐influenced movement of germplasm associated with cattle ranching. Despite the fragmented state of the presumed natural A. saman stands we sampled, we did not find any signs of inbreeding, suggesting that gene flow is not jeopardized in humanized landscapes. However, further research is needed to assess potential deleterious effects of fragmentation on progeny. Climate change is not expected to seriously threaten the in situ persistence of A. saman populations and might present opportunities for future range expansion. However, the sourcing of germplasm for tree planting activities needs to be aligned with the genetic affinity of reference populations across the distribution of Colombian SDTFs. We identify priority source populations for in situ conservation based on their high genetic diversity, lack or limited signs of admixture, and/or genetic uniqueness.https://doi.org/10.1002/ece3.6005agroforestryclimate changemicrosatellitespaleodistributionseed zonessuitability modeling |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Carolina Adriana Aguirre‐Morales Evert Thomas Carlos Ivan Cardozo Janeth Gutiérrez Carolina Alcázar Caicedo Luis Gonzalo Moscoso Higuita Luis Augusto Becerra López‐Lavalle Mailyn Adriana González |
spellingShingle |
Carolina Adriana Aguirre‐Morales Evert Thomas Carlos Ivan Cardozo Janeth Gutiérrez Carolina Alcázar Caicedo Luis Gonzalo Moscoso Higuita Luis Augusto Becerra López‐Lavalle Mailyn Adriana González Genetic diversity of the rain tree (Albizia saman) in Colombian seasonally dry tropical forest for informing conservation and restoration interventions Ecology and Evolution agroforestry climate change microsatellites paleodistribution seed zones suitability modeling |
author_facet |
Carolina Adriana Aguirre‐Morales Evert Thomas Carlos Ivan Cardozo Janeth Gutiérrez Carolina Alcázar Caicedo Luis Gonzalo Moscoso Higuita Luis Augusto Becerra López‐Lavalle Mailyn Adriana González |
author_sort |
Carolina Adriana Aguirre‐Morales |
title |
Genetic diversity of the rain tree (Albizia saman) in Colombian seasonally dry tropical forest for informing conservation and restoration interventions |
title_short |
Genetic diversity of the rain tree (Albizia saman) in Colombian seasonally dry tropical forest for informing conservation and restoration interventions |
title_full |
Genetic diversity of the rain tree (Albizia saman) in Colombian seasonally dry tropical forest for informing conservation and restoration interventions |
title_fullStr |
Genetic diversity of the rain tree (Albizia saman) in Colombian seasonally dry tropical forest for informing conservation and restoration interventions |
title_full_unstemmed |
Genetic diversity of the rain tree (Albizia saman) in Colombian seasonally dry tropical forest for informing conservation and restoration interventions |
title_sort |
genetic diversity of the rain tree (albizia saman) in colombian seasonally dry tropical forest for informing conservation and restoration interventions |
publisher |
Wiley |
series |
Ecology and Evolution |
issn |
2045-7758 |
publishDate |
2020-02-01 |
description |
Abstract Albizia saman is a multipurpose tree species of seasonally dry tropical forests (SDTFs) of Mesoamerica and northern South America typically cultivated in silvopastoral and other agroforestry systems around the world, a trend that is bound to increase in light of multimillion hectare commitments for forest and landscape restoration. The effective conservation and sustainable use of A. saman requires detailed knowledge of its genetic diversity across its native distribution range of which surprisingly little is known to date. We assessed the genetic diversity and structure of A.saman across twelve representative locations of SDTF in Colombia, and how they may have been shaped by past climatic changes and human influence. We found four different genetic groups which may be the result of differentiation due to isolation of populations in preglacial times. The current distribution and mixture of genetic groups across STDF fragments we observed might be the result of range expansion of SDTFs during the last glacial period followed by range contraction during the Holocene and human‐influenced movement of germplasm associated with cattle ranching. Despite the fragmented state of the presumed natural A. saman stands we sampled, we did not find any signs of inbreeding, suggesting that gene flow is not jeopardized in humanized landscapes. However, further research is needed to assess potential deleterious effects of fragmentation on progeny. Climate change is not expected to seriously threaten the in situ persistence of A. saman populations and might present opportunities for future range expansion. However, the sourcing of germplasm for tree planting activities needs to be aligned with the genetic affinity of reference populations across the distribution of Colombian SDTFs. We identify priority source populations for in situ conservation based on their high genetic diversity, lack or limited signs of admixture, and/or genetic uniqueness. |
topic |
agroforestry climate change microsatellites paleodistribution seed zones suitability modeling |
url |
https://doi.org/10.1002/ece3.6005 |
work_keys_str_mv |
AT carolinaadrianaaguirremorales geneticdiversityoftheraintreealbiziasamanincolombianseasonallydrytropicalforestforinformingconservationandrestorationinterventions AT evertthomas geneticdiversityoftheraintreealbiziasamanincolombianseasonallydrytropicalforestforinformingconservationandrestorationinterventions AT carlosivancardozo geneticdiversityoftheraintreealbiziasamanincolombianseasonallydrytropicalforestforinformingconservationandrestorationinterventions AT janethgutierrez geneticdiversityoftheraintreealbiziasamanincolombianseasonallydrytropicalforestforinformingconservationandrestorationinterventions AT carolinaalcazarcaicedo geneticdiversityoftheraintreealbiziasamanincolombianseasonallydrytropicalforestforinformingconservationandrestorationinterventions AT luisgonzalomoscosohiguita geneticdiversityoftheraintreealbiziasamanincolombianseasonallydrytropicalforestforinformingconservationandrestorationinterventions AT luisaugustobecerralopezlavalle geneticdiversityoftheraintreealbiziasamanincolombianseasonallydrytropicalforestforinformingconservationandrestorationinterventions AT mailynadrianagonzalez geneticdiversityoftheraintreealbiziasamanincolombianseasonallydrytropicalforestforinformingconservationandrestorationinterventions |
_version_ |
1721561493926838272 |