Global patterns of interaction specialization in bird-flower networks

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60076658%3A12310%2F17%3A43895434" target="_blank" >RIV/60076658:12310/17:43895434 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/67985939:_____/17:00478075 RIV/00216208:11310/17:10361609

Výsledek na webu

<a href="http://onlinelibrary.wiley.com/doi/10.1111/jbi.13045/epdf" target="_blank" >http://onlinelibrary.wiley.com/doi/10.1111/jbi.13045/epdf</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1111/jbi.13045" target="_blank" >10.1111/jbi.13045</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Global patterns of interaction specialization in bird-flower networks

Popis výsledku v původním jazyce

Aim Among the world&apos;s three major nectar-feeding bird taxa, hummingbirds are the most phenotypically specialized for nectarivory, followed by sunbirds, while the honeyeaters are the least phenotypically specialized taxa. We tested whether this phenotypic specialization gradient is also found in the interaction patterns with their floral resources. We compiled interaction networks between birds and floral resources for 79 hummingbird, nine sunbird and 33 honeyeater communities. Interaction specialization was quantified through connectance (C), complementary specialization (H-2), binary (Q(B)) and weighted modularity (Q), with both observed and null-model corrected values. We compared interaction specialization among the three types of bird-flower communities, both independently and while controlling for potential confounding variables, such as plant species richness, asymmetry, latitude, insularity, topography, sampling methods and intensity. Results Hummingbird-flower networks were more specialized than honeyeater-flower networks. Specifically, hummingbird-flower networks had a lower proportion of realized interactions (lower C), decreased niche overlap (greater H-2) and greater modularity (greater Q(B)). However, we found no significant differences between hummingbird- and sunbird-flower networks, nor between sunbird- and honeyeater-flower networks. Main conclusions As expected, hummingbirds and their floral resources have greater interaction specialization than honeyeaters, possibly because of greater phenotypic specialization and greater floral resource richness in the New World. Interaction specialization in sunbird-flower communities was similar to both hummingbird-flower and honeyeater-flower communities. These results suggest a link between interaction specialization and both phenotypic specialization and floral resource richness within bird-flower communities at a global scale.

Název v anglickém jazyce

Global patterns of interaction specialization in bird-flower networks

Popis výsledku anglicky

Aim Among the world&apos;s three major nectar-feeding bird taxa, hummingbirds are the most phenotypically specialized for nectarivory, followed by sunbirds, while the honeyeaters are the least phenotypically specialized taxa. We tested whether this phenotypic specialization gradient is also found in the interaction patterns with their floral resources. We compiled interaction networks between birds and floral resources for 79 hummingbird, nine sunbird and 33 honeyeater communities. Interaction specialization was quantified through connectance (C), complementary specialization (H-2), binary (Q(B)) and weighted modularity (Q), with both observed and null-model corrected values. We compared interaction specialization among the three types of bird-flower communities, both independently and while controlling for potential confounding variables, such as plant species richness, asymmetry, latitude, insularity, topography, sampling methods and intensity. Results Hummingbird-flower networks were more specialized than honeyeater-flower networks. Specifically, hummingbird-flower networks had a lower proportion of realized interactions (lower C), decreased niche overlap (greater H-2) and greater modularity (greater Q(B)). However, we found no significant differences between hummingbird- and sunbird-flower networks, nor between sunbird- and honeyeater-flower networks. Main conclusions As expected, hummingbirds and their floral resources have greater interaction specialization than honeyeaters, possibly because of greater phenotypic specialization and greater floral resource richness in the New World. Interaction specialization in sunbird-flower communities was similar to both hummingbird-flower and honeyeater-flower communities. These results suggest a link between interaction specialization and both phenotypic specialization and floral resource richness within bird-flower communities at a global scale.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10618 - Ecology

Projekt

<a href="/cs/project/GB14-36098G" target="_blank" >GB14-36098G: Centrum pro tropickou biologii</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2017

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Journal of Biogeography

ISSN

0305-0270

e-ISSN

—

Svazek periodika

44

Číslo periodika v rámci svazku

8

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

20

Strana od-do

1891-1910

Kód UT WoS článku

000406117000020

EID výsledku v databázi Scopus

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