News News

The structure of waterbird seed dispersal networks is not mediated by functional traits

Plants and their dispersers form interaction networks whose structure has important implications for the persistence and stability of the community. Frugivory is vital for the dispersal of many plants, but the dispersal interactions between plants and non-frugivorous animals, such as waterfowl, are poorly studied. In this study, the authors characterized the structure of networks for seed dispersal by waterfowl, considered whether their structure is similar to that of the networks formed between frugivorous birds and plants with fleshy fruits, and searched for functional traits of birds or plants that are important for maintenance of network structure. Data from four European community-level studies on the content of the digestive tracts of ducks and rallids, including 12 species of birds and 88 of plants, were used. Waterbird seed dispersal networks shared some organizational patterns with those of frugivores, but unlike frugivores, their underlying structure was not related to functional traits. This is likely related to fundamental differences between waterfowl and frugivores in the way they ingest seeds. Differences in the functional role of particular waterbird species for seed dispersal are likely due to other processes, such as differences in population size, movement patterns, microhabitat selection, or gut processing of seeds. informacion[at]ebd.csic.es: Sebastián-González et al (2020) Waterbird seed-dispersal networks are similarly nested but less modular than those of frugivorous species, and not driven by species ecological traits. Funct Ecol https://doi.org/10.1111/1365-2435.13657


https://besjournals.onlinelibrary.wiley.com/doi/full/10.1111/1365-2435.13657
Average (0 Votes)

Latest News Latest News

A timeline for the urbanization of wild birds: The case of the lesser kestrel

The Lesser kestrel (Falco naumanni) evolved as a separate species in the Old-World kestrel radiation starting in the late Miocene. Given that the first cities were erected in the Holocene, this...

Stripes of prey species associated with group living

Grouping is a widespread form of predator defence, with individuals in groups often performing evasive collective movements in response to attack by predators. Individuals in these groups use...

Seed dispersal by neotropical waterfowl depends on bird species and seasonality

Waterbirds have an important ecological function as vectors of plant dispersal between different wetlands. In the Neotropical region, there is very limited information about this dispersal. In...

Impact of fisheries on sea turtles

The bycatch of sea turtles by industrial fisheries is receiving an increasing attention in recent years due to the high impact it causes on these endangered species. This issue was evaluated in...