Evidence of endozoochory in upland geese <i>Chloephaga picta</i> and white‐bellied seedsnipes <i>Attagis malouinus</i> in sub‐Antarctic Chile

Lazaro, Xenabeth; Mackenzie, Roy; Jiménez, Jaime E.

doi:10.1002/ece3.7725

Cited by 5 publications

(2 citation statements)

References 42 publications

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“…Thus, short‐term studies are necessary to understand the waterbird seed‐dispersal network specificities in different wetland systems, while long‐term studies would be necessary to understand such patterns over time. Finally, in order to understand the processes underlying the dynamics of wetland biodiversity and, consequently, wetland conservation, it is important to integrate networks for waterbird seed‐dispersal by endozoochory with other mechanisms of plant dispersal, such as endozoochory of whole plants or viable fragments, or epizoochory (Green et al, 2022; Lázaro et al, 2021; Silva et al, 2018; Wilkinson et al, 2017). Likewise, there is a need to investigate dispersal networks for other organisms dispersed by waterbirds, as shown for many aquatic invertebrates (Brochet et al, 2010b; Green & Figuerola, 2005; Martín‐Vélez et al, 2022; Silva et al, 2022) and recently for fishes (Lovas‐Kiss, Vincze, Löki, et al, 2020; Silva et al, 2019).…”

Section: Discussionmentioning

confidence: 99%

A waterfowl seed‐dispersal network from the Neotropical region is nested and modular

et al. 2023

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Seed dispersal by vertebrates is fundamental for the persistence of plant species, forming networks of interactions that are often nested and modular. Networks involving angiosperms and frugivorous birds are relatively well‐studied in the Neotropical region, but there are no previous studies of networks involving waterbirds. Here, we describe the structure of a Neotropical waterfowl seed‐dispersal network and identify the species that have an important role for the network structure. We used information on 40 plant taxa found in fecal samples of five common waterfowl species to calculate the nestedness (NODF), weighted nestedness (WNODF), modularity, and weighted modularity of the network. We found that the network was nested, with yellow‐billed teal showing the highest contribution both to nestedness and weighted nestedness. Twenty‐four plant species contributed positively to weighted nestedness, with Salzmann's mille graines presenting the highest influence both to nestedness and weighted nestedness. The network was modular, but the weighted modularity was not significant. These results need to be considered with caution due to incomplete interaction sampling for two species. Ringed teal, Brazilian teal, and yellow‐billed teal were considered hub modular species. Among plants, beak sedges and water snowflake were considered modular hub species, while Salzmann's mille graines and spikerush were network connectors. The structure of this Neotropical waterbird seed‐dispersal network differed from the only previous waterfowl network study, from Europe, which found similar level of nestedness but no significant modularity. We include several possible explanations for this discrepancy and identified priorities for future research into waterbird–plant interaction networks. Abstract in Portuguese is available with online material.

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Section: Discussionmentioning

confidence: 99%

A waterfowl seed‐dispersal network from the Neotropical region is nested and modular

et al. 2023

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“…upland goose ( Chloephaga picta ), white-bellied seedsnipe ( Attagis malouinus ), mallard ( Anas platyrhnchos ), skua ( Stercororius sp.)] and even a flying fox ( Pteropus conspicillatus ), has been shown to be feasible ( Parsons et al., 2007 ; Wilkinson et al., 2017 ; Lázaro et al., 2021 ; Maggio et al., 2022 ), and Ricciocarpos has been noted to be present in the faeces of mallards ( Hartman, 1985 ). Thus, long distance dispersal via bird vectors ( Viana et al., 2016 ) is a plausible mechanism to explain bryophyte species with disjunct, sometimes bipolar, geographic distributions ( Schuster, 1983 ; Piñeiro et al., 2012 ; Lewis et al., 2014b ).…”

Section: Distribution and Ecology Of Ricciocarposmentioning

confidence: 99%

The monoicous secondarily aquatic liverwort Ricciocarpos natans as a model within the radiation of derived Marchantiopsida

Singh,

Bowman

2023

Front. Plant Sci.

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Liverworts represent one of six embryophyte lineages that have a Devonian, or earlier, origin, and are, at present, represented by only Marchantia polymorpha as an established model. Ricciocarpos natans is a secondarily monoicous aquatic liverwort with a worldwide distribution, being found on all continents except Antarctica. Ricciocarpos, a monotypic genus, forms a sister relationship with Riccia, the largest genus of the Marchantiopsida (~250 species), diverging from their common ancestor in the mid-Cretaceous. R. natans is typically found on small stagnant ponds and billabongs (seasonal pools), where it assumes a typical ‘aquatic’ form with long scale keels for stabilization on the water surface. But, as water bodies dry, plants may become stranded and subsequently shift their development to assume a ‘terrestrial’ form with rhizoids anchoring the plants to the substrate. We developed R. natans as a model to address a specific biological question — what are the genomic consequences when monoicy evolves from ancestral dioicy where sex is chromosomally determined? However, R. natans possesses other attributes that makes it a model to investigate a variety of biological processes. For example, it provides a foundation to explore the evolution of sexual systems within Riccia, where it appears monoicy may have evolved many times independently. Furthermore, the worldwide distribution of R. natans postdates plate tectonic driven continent separation, and thus, provides an intriguing model for population genomics. Finally, the transition from an aquatic growth form to a terrestrial growth form is mediated by the phytohormone abscisic acid, and represents convergent evolution with a number of other aquatic embryophytes, a concept we explore further here.

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Endozoochorous plant dispersal by the Brown Bear ( Ursus arctos ) in the Pyrénées: angiosperms but also ferns and mosses and the importance of disaggregation agents

Pauly,

Vanpé,

Roy

et al. 2024

Botany Letters

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Evidence of endozoochory in upland geese Chloephaga picta and white‐bellied seedsnipes Attagis malouinus in sub‐Antarctic Chile

Cited by 5 publications

References 42 publications

A waterfowl seed‐dispersal network from the Neotropical region is nested and modular

A waterfowl seed‐dispersal network from the Neotropical region is nested and modular

The monoicous secondarily aquatic liverwort Ricciocarpos natans as a model within the radiation of derived Marchantiopsida

Endozoochorous plant dispersal by the Brown Bear ( Ursus arctos ) in the Pyrénées: angiosperms but also ferns and mosses and the importance of disaggregation agents

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