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Functional traits driving species role in the structure of terrestrial vertebrate scavenger networks
ID
Sebastián-González, Esther
(
Author
),
ID
Morales-Reyes, Zebensui
(
Author
),
ID
Botella, Francisco
(
Author
),
ID
Naves-Alegre, Lara
(
Author
),
ID
Pérez-García, Juan M.
(
Author
),
ID
Mateo-Tomás, Patricia
(
Author
),
ID
Olea, Pedro P.
(
Author
),
ID
Moleón, Marcos
(
Author
),
ID
Magalhães Barbosa, Jomar
(
Author
),
ID
Hiraldo, Fernando
(
Author
),
ID
Jerina, Klemen
(
Author
),
ID
Krofel, Miha
(
Author
), et al.
URL - Source URL, Visit
https://doi.org/10.1002/ecy.3519
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(961,99 KB)
MD5: C387B4D9A7349AC57C5BC0E5E0AE50D5
URL - Source URL, Visit
https://esajournals.onlinelibrary.wiley.com/doi/10.1002/ecy.3519
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Abstract
Species assemblages often have a non-random nested organization, which in vertebrate scavenger (carrion-consuming) assemblages is thought to be driven by facilitation in competitive environments. However, not all scavenger species play the same role in maintaining assemblage structure, as some species are obligate scavengers (i.e., vultures) and others are facultative, scavenging opportunistically. We used a database with 177 vertebrate scavenger species from 53 assemblages in 22 countries across five continents to identify which functional traits of scavenger species are key to maintaining the scavenging network structure. We used network analyses to relate ten traits hypothesized to affect assemblage structure with the %role% of each species in the scavenging assemblage in which it appeared. We characterized the role of a species in terms of both the proportion of monitored carcasses on which that species scavenged, or scavenging breadth (i.e., the species %normalized degree%), and the role of that species in the nested structure of the assemblage (i.e., the species %paired nested degree%), therefore identifying possible facilitative interactions among species. We found that species with high olfactory acuity, social foragers, and obligate scavengers had the widest scavenging breadth. We also found that social foragers had a large paired nested degree in scavenger assemblages, probably because their presence is easier to detect by other species to signal carcass occurrence. Our study highlights differences in the functional roles of scavenger species and can be used to identify key species for targeted conservation to maintain the ecological function of scavenger assemblages.
Language:
English
Keywords:
assemblage nestedness
,
carrion
,
facilitative interaction
,
normalized degree
,
obligatescavenger
,
olfactory acuity
,
social foraging
,
vultur
Work type:
Article
Typology:
1.01 - Original Scientific Article
Organization:
BF - Biotechnical Faculty
Publication status:
Published
Publication version:
Version of Record
Submitted for review:
07.01.2021
Article acceptance date:
24.05.2021
Publication date:
27.08.2021
Year:
2021
Number of pages:
Str.
Numbering:
Vol. 102, iss. 12
PID:
20.500.12556/RUL-132860
UDC:
630*15
ISSN on article:
1939-9170
DOI:
10.1002/ecy.3519
COBISS.SI-ID:
83700995
Publication date in RUL:
05.11.2021
Views:
1085
Downloads:
241
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Record is a part of a journal
Title:
Ecology
Shortened title:
Ecol.
Publisher:
Brooklyn Botanic Garden
ISSN:
1939-9170
COBISS.SI-ID:
4294054
Licences
License:
CC BY 4.0, Creative Commons Attribution 4.0 International
Link:
http://creativecommons.org/licenses/by/4.0/
Description:
This is the standard Creative Commons license that gives others maximum freedom to do what they want with the work as long as they credit the author.
Licensing start date:
27.08.2021
Secondary language
Language:
Slovenian
Keywords:
mrhovinarji
,
interakcije vrst
,
iskanje hrane
,
sociologija živali
Projects
Funder:
ARRS - Slovenian Research Agency
Project number:
P4-0059
Name:
Gozd, gozdarstvo in obnovljivi gozdni viri
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