Cite as:
Tiede, Y.; Homeier, J.; Cumbicus, N.; Pe&ntilde;a, J.; Albrecht, J.; Ziegenhagen, B.; Bendix, J.; Brandl, R. &amp; Farwig, N. (2016): <b>Phylogenetic niche conservatism does not explain elevational patterns of species richness, phylodiversity and family age of tree assemblages in Andean rainforest.</b>. <i>Erdkunde</i> <b>70</b>(1), 83-106.

Resource Description

Title: Phylogenetic niche conservatism does not explain elevational patterns of species richness, phylodiversity and family age of tree assemblages in Andean rainforest.
FOR816dw ID: 269
Publication Date: 2016-02-01
License and Usage Rights: PAK 823-825 data user agreement. (
Resource Owner(s):
Individual: Yvonne Tiede
Individual: Jürgen Homeier
Individual: Nixon Cumbicus
Individual: Jaime Peña
Individual: Jörg Albrecht
Individual: Birgit Ziegenhagen
Individual: Jörg Bendix
Individual: Roland Brandl
Individual: Nina Farwig
Phylogenetic niche conservatism (PNC) is the tendency of species within a clade to retain ancestral traits and<br/> to persist in their primary ecological niches on geological time scales. It links evolutionary and ecological processes and has<br/> been hypothesized to explain patterns of species richness and the composition of species assemblages. Decreasing patterns<br/> of species richness along latitudinal gradients were often explained by the combination of ancient tropical climates, trait<br/> retention of tropical lineages and environmental filtering. PNC also predicts decreasing phylodiversity and family age with<br/> decreasing tropicality and has been invoked to explain these patterns along climatic gradients across latitudinal as well as elevational<br/> gradients. However, recent studies on tree assemblages along latitudinal and elevational gradients in South America<br/> found patterns contradicting the PNC framework. Our study aims to shed light on these contradictions using three different<br/> metrics of the phylogenetic composition that form a gradient from recent evolutionary history to deep phylogenetic<br/> relationships. We analyzed the relationships between elevation and taxonomic species richness, phylodiversity and family<br/> age of tree assemblages in Andean rainforests in Ecuador. In contrast to predictions of the PNC we found no associations<br/> of elevation with species richness of trees and increasing clade level phylodiversity and family age of the tree assemblages<br/> with elevation. Interestingly, we found that patterns of phylodiversity across the studied elevation gradient depended especially<br/> on the deep nodes in the phylogeny. We therefore suggest that the dispersal of evolutionarily old plant lineages with<br/> extra-tropical origins influences the recent composition of tree assemblages in the Andes. Further studies spanning broader<br/> ecological gradients and using better resolved phylogenies to estimate family and species ages are needed to obtain a deeper<br/> mechanistic understanding of the processes that drive the assembly of tree communities along elevational gradients.
| Andes | Biodiversity | Ecudaor |
Literature type specific fields:
Journal: Erdkunde
Volume: 70
Issue: 1
Page Range: 83-106
Metadata Provider:
Individual: Jörg Bendix
Online Distribution:
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