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dc.contributor.author
Vazquez, Diego P.  
dc.contributor.author
Melián, Carlos J.  
dc.contributor.author
Neal, M. Williams  
dc.contributor.author
Blüthgen, Nico  
dc.contributor.author
Krasnov, Boris R.  
dc.contributor.author
Poulin, Robert  
dc.date.available
2020-03-16T21:54:50Z  
dc.date.issued
2007-07  
dc.identifier.citation
Vazquez, Diego P.; Melián, Carlos J.; Neal, M. Williams; Blüthgen, Nico; Krasnov, Boris R.; et al.; Species abundance and asymmetric interaction strength in ecological networks; Wiley Blackwell Publishing, Inc; Oikos; 116; 7; 7-2007; 1120-1127  
dc.identifier.issn
0030-1299  
dc.identifier.uri
http://hdl.handle.net/11336/99738  
dc.description.abstract
The strength of interactions among species in a network tends to be highly asymmetric. We evaluate thehypothesis that this asymmetry results from the distribution of abundance among species, so that speciesinteractions occur randomly among individuals. We used a database on mutualistic and antagonistic bipartitequantitative interaction networks. We show that across all types of networks asymmetry was correlated withabundance, so that rare species were asymmetrically affected by their abundant partners, while pairs ofinteracting abundant species tended to exhibit more symmetric, reciprocally strong effects. A null model showsthat abundance provides a sufficient explanation of the asymmetry structure in some networks, but suggests therole of additional factors in others. Although not universal, our hypothesis holds for a substantial fraction ofnetworks analyzed here, and should be considered as a null model in all studies aimed at evaluating theecological and evolutionary consequences of species interactions.  
dc.format
application/pdf  
dc.language.iso
eng  
dc.publisher
Wiley Blackwell Publishing, Inc  
dc.rights
info:eu-repo/semantics/openAccess  
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/  
dc.subject.classification
Ecología  
dc.subject.classification
Ciencias Biológicas  
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS  
dc.title
Species abundance and asymmetric interaction strength in ecological networks  
dc.type
info:eu-repo/semantics/article  
dc.type
info:ar-repo/semantics/artículo  
dc.type
info:eu-repo/semantics/publishedVersion  
dc.date.updated
2019-12-05T13:36:15Z  
dc.journal.volume
116  
dc.journal.number
7  
dc.journal.pagination
1120-1127  
dc.journal.pais
Reino Unido  
dc.journal.ciudad
Londres  
dc.description.fil
Fil: Vazquez, Diego P.. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto Argentino de Investigaciones de las Zonas Áridas. Provincia de Mendoza. Instituto Argentino de Investigaciones de las Zonas Áridas. Universidad Nacional de Cuyo. Instituto Argentino de Investigaciones de las Zonas Áridas; Argentina  
dc.description.fil
Fil: Melián, Carlos J.. University of California; Estados Unidos  
dc.description.fil
Fil: Neal, M. Williams. Bryn Mawr College; Estados Unidos  
dc.description.fil
Fil: Blüthgen, Nico. Universität Würzburg; Alemania  
dc.description.fil
Fil: Krasnov, Boris R.. Ben Gurion University of the Negev; Israel  
dc.description.fil
Fil: Poulin, Robert. University of Otago; Nueva Zelanda  
dc.journal.title
Oikos  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1111/j.2007.0030-1299.15828.x  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://onlinelibrary.wiley.com/doi/10.1111/j.0030-1299.2007.15828.x