Abstract
This paper investigates the importance of dispersal directionality and river network structure to biodiversity patterns. Our model results suggest that dispersal directionality plays a crucial role in determining biodiversity patterns, even more so than dispersal rates. Dispersal directionality heterogenizes the spatial distribution of abundance, which results in higher extinction rates of rare species and higher β diversity. It induces a few species with very high abundances at the expense of many species with intermediate abundances, thereby lowering α and γ diversities. The river network structure also increases β diversity, i.e., more heterogeneous ecosystems, in comparison to typical two-dimensional landscapes. We find that the interplay between the dispersal directionality and network topology has important consequences on relative species abundance patterns and the distribution of α diversity.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 221-229 |
| Number of pages | 9 |
| Journal | Journal of Theoretical Biology |
| Volume | 252 |
| Issue number | 2 |
| DOIs | |
| State | Published - May 21 2008 |
| Externally published | Yes |
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Keywords
- Biodiversity
- Directionality
- Dispersal
- Network structure
- River network
ASJC Scopus subject areas
- Agricultural and Biological Sciences(all)
Cite this
Patterns of vegetation biodiversity : The roles of dispersal directionality and river network structure. / Muneepeerakul, Rachata; Bertuzzo, Enrico; Rinaldo, Andrea; Rodriguez-Iturbe, Ignacio.
In: Journal of Theoretical Biology, Vol. 252, No. 2, 21.05.2008, p. 221-229.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Patterns of vegetation biodiversity
T2 - The roles of dispersal directionality and river network structure
AU - Muneepeerakul, Rachata
AU - Bertuzzo, Enrico
AU - Rinaldo, Andrea
AU - Rodriguez-Iturbe, Ignacio
PY - 2008/5/21
Y1 - 2008/5/21
N2 - This paper investigates the importance of dispersal directionality and river network structure to biodiversity patterns. Our model results suggest that dispersal directionality plays a crucial role in determining biodiversity patterns, even more so than dispersal rates. Dispersal directionality heterogenizes the spatial distribution of abundance, which results in higher extinction rates of rare species and higher β diversity. It induces a few species with very high abundances at the expense of many species with intermediate abundances, thereby lowering α and γ diversities. The river network structure also increases β diversity, i.e., more heterogeneous ecosystems, in comparison to typical two-dimensional landscapes. We find that the interplay between the dispersal directionality and network topology has important consequences on relative species abundance patterns and the distribution of α diversity.
AB - This paper investigates the importance of dispersal directionality and river network structure to biodiversity patterns. Our model results suggest that dispersal directionality plays a crucial role in determining biodiversity patterns, even more so than dispersal rates. Dispersal directionality heterogenizes the spatial distribution of abundance, which results in higher extinction rates of rare species and higher β diversity. It induces a few species with very high abundances at the expense of many species with intermediate abundances, thereby lowering α and γ diversities. The river network structure also increases β diversity, i.e., more heterogeneous ecosystems, in comparison to typical two-dimensional landscapes. We find that the interplay between the dispersal directionality and network topology has important consequences on relative species abundance patterns and the distribution of α diversity.
KW - Biodiversity
KW - Directionality
KW - Dispersal
KW - Network structure
KW - River network
UR - http://www.scopus.com/inward/record.url?scp=42749097330&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=42749097330&partnerID=8YFLogxK
U2 - 10.1016/j.jtbi.2008.02.001
DO - 10.1016/j.jtbi.2008.02.001
M3 - Article
C2 - 18343409
AN - SCOPUS:42749097330
VL - 252
SP - 221
EP - 229
JO - Journal of Theoretical Biology
JF - Journal of Theoretical Biology
SN - 0022-5193
IS - 2
ER -