Tags

Type your tag names separated by a space and hit enter

The legacy of biogeographic history on the composition and structure of Andean forests.
Ecology. 2020 Jul 06 [Online ahead of print]E

Abstract

The biogeographic origin of species may help to explain differences in average tree height and aboveground biomass (AGB) of tropical mountain forests. After the Andean uplift, small-statured trees should have been amongst the initial colonizers of the highlands (new cold environment) from the lowland tropics since these species are pre-adapted to cold conditions with narrow vessels that are relatively resistant to freezing. If the descendants of these small-statured clades continue to dominate tropical highland forests, there will be a high co-occurrence of close relatives at high elevations. In other words, this scenario predicts a systematic decline in tree size, AGB, and phylogenetic diversity with elevation. In contrast, the colonization of Andean forests by some large-statured clades that originated in temperate regions may modify this expectation and promote a mixing of tropical and temperate clades, thereby increasing the phylogenetic diversity in tropical highland forests. This latter scenario predicts an increase or no change of tree size, AGB, and phylogenetic diversity with elevation. We assessed how the historical immigration of large-statured temperate-affiliated tree lineages adapted to cold conditions may have influenced the composition and structure of Andean forests. Specifically, we used 92 0.25-ha forest inventory plots distributed in the tropical Andes Mountains of Colombia to assess the relationship between the phylogenetic diversity and AGB along elevational gradients. We classified tree species as being either 'tropical-affiliated' or 'temperate-affiliated' and estimated their independent contribution to forest AGB. We used structural equation modeling to separate the direct and indirect effect of elevation on AGB. We found a "hump-shaped" relationship of phylogenetic diversity, AGB, and tree size with elevation. The high phylogenetic diversity found between 1800-2200 m asl was due to the mixing of highland floras containing many temperate-affiliated species, and lowland floras containing mostly tropical-affiliated species. The high AGB in highland forests, which contrasted with the expected decline of AGB with elevation, was likely due to the significant contribution of temperate-affiliated species. Our findings highlight the lasting importance of biogeographic history on the composition and structure of Andean mountain forests.

Authors+Show Affiliations

Departamento de Ciencias Forestales, Universidad Nacional de Colombia Sede Medellín, Universidad Nacional de Colombia, Calle 59A No 63-20, Medellín, Colombia.Departamento de Ciencias Forestales, Universidad Nacional de Colombia Sede Medellín, Universidad Nacional de Colombia, Calle 59A No 63-20, Medellín, Colombia.Department of Biology, University of Miami, Miami, USA.Sistema de Monitoreo de Bosques y Carbono, Instituto de Hidrología, Meteorología y Estudios Ambientales de Colombia - IDEAM, Calle 25D No. 96-70, Bogotá, Colombia.Departamento de Ciencias Forestales, Universidad Nacional de Colombia Sede Medellín, Universidad Nacional de Colombia, Calle 59A No 63-20, Medellín, Colombia. Sistema de Monitoreo de Bosques y Carbono, Instituto de Hidrología, Meteorología y Estudios Ambientales de Colombia - IDEAM, Calle 25D No. 96-70, Bogotá, Colombia.Departamento de Ciencias Forestales, Universidad Nacional de Colombia Sede Medellín, Universidad Nacional de Colombia, Calle 59A No 63-20, Medellín, Colombia.Grupo de Investigación en Ecosistemas y Cambio Global, Carbono & Bosques, Calle 51A No. 72-23, Apartamento 601, Medellín, Colombia.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

32629538

Citation

González-Caro, Sebastián, et al. "The Legacy of Biogeographic History On the Composition and Structure of Andean Forests." Ecology, 2020, pp. e03131.
González-Caro S, Duque Á, Feeley KJ, et al. The legacy of biogeographic history on the composition and structure of Andean forests. Ecology. 2020.
González-Caro, S., Duque, Á., Feeley, K. J., Cabrera, E., Phillips, J., Ramirez, S., & Yepes, A. (2020). The legacy of biogeographic history on the composition and structure of Andean forests. Ecology, e03131. https://doi.org/10.1002/ecy.3131
González-Caro S, et al. The Legacy of Biogeographic History On the Composition and Structure of Andean Forests. Ecology. 2020 Jul 6;e03131. PubMed PMID: 32629538.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - The legacy of biogeographic history on the composition and structure of Andean forests. AU - González-Caro,Sebastián, AU - Duque,Álvaro, AU - Feeley,Kenneth J, AU - Cabrera,Edersson, AU - Phillips,Juan, AU - Ramirez,Sebastián, AU - Yepes,Adriana, Y1 - 2020/07/06/ PY - 2020/7/7/entrez PY - 2020/7/7/pubmed PY - 2020/7/7/medline KW - Carbon stocks KW - Fagaceae KW - Historical dispersal KW - Niche conservatism KW - Tree size KW - Tropical Andes SP - e03131 EP - e03131 JF - Ecology JO - Ecology N2 - The biogeographic origin of species may help to explain differences in average tree height and aboveground biomass (AGB) of tropical mountain forests. After the Andean uplift, small-statured trees should have been amongst the initial colonizers of the highlands (new cold environment) from the lowland tropics since these species are pre-adapted to cold conditions with narrow vessels that are relatively resistant to freezing. If the descendants of these small-statured clades continue to dominate tropical highland forests, there will be a high co-occurrence of close relatives at high elevations. In other words, this scenario predicts a systematic decline in tree size, AGB, and phylogenetic diversity with elevation. In contrast, the colonization of Andean forests by some large-statured clades that originated in temperate regions may modify this expectation and promote a mixing of tropical and temperate clades, thereby increasing the phylogenetic diversity in tropical highland forests. This latter scenario predicts an increase or no change of tree size, AGB, and phylogenetic diversity with elevation. We assessed how the historical immigration of large-statured temperate-affiliated tree lineages adapted to cold conditions may have influenced the composition and structure of Andean forests. Specifically, we used 92 0.25-ha forest inventory plots distributed in the tropical Andes Mountains of Colombia to assess the relationship between the phylogenetic diversity and AGB along elevational gradients. We classified tree species as being either 'tropical-affiliated' or 'temperate-affiliated' and estimated their independent contribution to forest AGB. We used structural equation modeling to separate the direct and indirect effect of elevation on AGB. We found a "hump-shaped" relationship of phylogenetic diversity, AGB, and tree size with elevation. The high phylogenetic diversity found between 1800-2200 m asl was due to the mixing of highland floras containing many temperate-affiliated species, and lowland floras containing mostly tropical-affiliated species. The high AGB in highland forests, which contrasted with the expected decline of AGB with elevation, was likely due to the significant contribution of temperate-affiliated species. Our findings highlight the lasting importance of biogeographic history on the composition and structure of Andean mountain forests. SN - 1939-9170 UR - https://www.unboundmedicine.com/medline/citation/32629538/The_legacy_of_biogeographic_history_on_the_composition_and_structure_of_Andean_forests DB - PRIME DP - Unbound Medicine ER -
Try the Free App:
Prime PubMed app for iOS iPhone iPad
Prime PubMed app for Android
Prime PubMed is provided
free to individuals by:
Unbound Medicine.