Availability of food resources and habitat structure shape the individual‐resource network of a Neotropical marsupial
1. Spatial and temporal variation in networks has been reported in different studies. However, the many effects of habitat structure and food resource availability variation on network structures have remained poorly investigated, especially in individual‐ based networks. This approach can shed l...
| Main Authors: | Camargo, Nicholas Ferreira de, Oliveira, Hernani F. M. de, Ribeiro, Juliana Fernandes, Camargo, Amabílio J. A. de, Vieira, Emerson Monteiro |
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2019
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https://repositorio.unb.br/handle/10482/35799 https:// doi.org/10.1002/ece3.5024 https://orcid.org/0000-0001-6859-8780 https://orcid.org/0000-0003-3488-621X |
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ir-10482-357992019-11-11T13:35:01Z Availability of food resources and habitat structure shape the individual‐resource network of a Neotropical marsupial Camargo, Nicholas Ferreira de Oliveira, Hernani F. M. de Ribeiro, Juliana Fernandes Camargo, Amabílio J. A. de Vieira, Emerson Monteiro Cerrados Marsupial 1. Spatial and temporal variation in networks has been reported in different studies. However, the many effects of habitat structure and food resource availability variation on network structures have remained poorly investigated, especially in individual‐ based networks. This approach can shed light on individual specialization of resource use and how habitat variations shape trophic interactions. 2. To test hypotheses related to habitat variability on trophic interactions, we investigated seasonal and spatial variation in network structure of four populations of the marsupial Gracilinanus agilis in the highly seasonal tropical savannas of the Brazilian Cerrado. 3. We evaluated such variation with network nestedness and modularity considering both cool‐dry and warm‐wet seasons, and related such variations with food resource availability and habitat structure (considered in the present study as environmental variation) in four sites of savanna woodland forest. 4. Network analyses showed that modularity (but not nestedness) was consistently lower during the cool‐dry season in all G. agilis populations. Our results indicated that nestedness is related to habitat structure, showing that this metric increases in sites with thick and spaced trees. On the other hand, modularity was positively related to diversity of arthropods and abundance of fruits. 5. We propose that the relationship between nestedness and habitat structure is an outcome of individual variation in the vertical space and food resource use by G. agilis in sites with thick and spaced trees. Moreover, individual specialization in resource‐rich and population‐dense periods possibly increased the network modularity of G. agilis. Therefore, our study reveals that environment variability considering spatial and temporal components is important for shaping network structure of populations. 2019-11-11T13:34:30Z 2019-11-11T13:34:30Z 2019 Artigo Camargo, Nícholas F. de et al. Availability of food resources and habitat structure shape the individual‐resource network of a Neotropical marsupial. Ecology and Evolution, v. 9, n. 7, 2019. DOI: https://doi.org/10.1002/ece3.5024. Disponível em: https://onlinelibrary.wiley.com/doi/full/10.1002/ece3.5024. Acesso em: 11 nov. 2019. https://repositorio.unb.br/handle/10482/35799 https:// doi.org/10.1002/ece3.5024 https://orcid.org/0000-0001-6859-8780 https://orcid.org/0000-0003-3488-621X Inglês Acesso Aberto This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. © 2019 The Authors. Ecology and Evolution published by John Wiley & Sons Ltd. application/pdf Wiley |
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Inglês |
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Cerrados Marsupial |
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Cerrados Marsupial Camargo, Nicholas Ferreira de Oliveira, Hernani F. M. de Ribeiro, Juliana Fernandes Camargo, Amabílio J. A. de Vieira, Emerson Monteiro Availability of food resources and habitat structure shape the individual‐resource network of a Neotropical marsupial |
| description |
1. Spatial and temporal variation in networks has been reported in different studies.
However, the many effects of habitat structure and food resource availability variation
on network structures have remained poorly investigated, especially in individual‐
based networks. This approach can shed light on individual specialization
of resource use and how habitat variations shape trophic interactions.
2. To test hypotheses related to habitat variability on trophic interactions, we investigated
seasonal and spatial variation in network structure of four populations of
the marsupial Gracilinanus agilis in the highly seasonal tropical savannas of the
Brazilian Cerrado.
3. We evaluated such variation with network nestedness and modularity considering
both cool‐dry and warm‐wet seasons, and related such variations with food resource
availability and habitat structure (considered in the present study as environmental
variation) in four sites of savanna woodland forest.
4. Network analyses showed that modularity (but not nestedness) was consistently
lower during the cool‐dry season in all G. agilis populations. Our results indicated
that nestedness is related to habitat structure, showing that this metric increases
in sites with thick and spaced trees. On the other hand, modularity was positively
related to diversity of arthropods and abundance of fruits.
5. We propose that the relationship between nestedness and habitat structure is an
outcome of individual variation in the vertical space and food resource use by
G. agilis in sites with thick and spaced trees. Moreover, individual specialization in
resource‐rich and population‐dense periods possibly increased the network modularity
of G. agilis. Therefore, our study reveals that environment variability considering
spatial and temporal components is important for shaping network
structure of populations. |
| format |
Artigo |
| author |
Camargo, Nicholas Ferreira de Oliveira, Hernani F. M. de Ribeiro, Juliana Fernandes Camargo, Amabílio J. A. de Vieira, Emerson Monteiro |
| author_sort |
Camargo, Nicholas Ferreira de |
| title |
Availability of food resources and habitat structure shape the individual‐resource network of a Neotropical marsupial |
| title_short |
Availability of food resources and habitat structure shape the individual‐resource network of a Neotropical marsupial |
| title_full |
Availability of food resources and habitat structure shape the individual‐resource network of a Neotropical marsupial |
| title_fullStr |
Availability of food resources and habitat structure shape the individual‐resource network of a Neotropical marsupial |
| title_full_unstemmed |
Availability of food resources and habitat structure shape the individual‐resource network of a Neotropical marsupial |
| title_sort |
availability of food resources and habitat structure shape the individual‐resource network of a neotropical marsupial |
| publisher |
Wiley |
| publishDate |
2019 |
| url |
https://repositorio.unb.br/handle/10482/35799 https:// doi.org/10.1002/ece3.5024 https://orcid.org/0000-0001-6859-8780 https://orcid.org/0000-0003-3488-621X |
| _version_ |
1672205847255580672 |
| score |
13.657419 |