Foods of Blue-Winged Teal in Two Neotropical Wetlands

1994 ◽  
Vol 58 (3) ◽  
pp. 561 ◽  
Author(s):  
Jorge E. Botero ◽  
Donald H. Rusch
Keyword(s):  
Neotropical Wetlands

scholarly journals Evidence of cross-taxon congruence in Neotropical wetlands: Importance of environmental and spatial factors

2017 ◽  
Vol 12 ◽  
pp. 108-118 ◽  
Author(s):  
Marisa C. Lários ◽  
Catia Nunes da Cunha ◽  
Jerry Penha ◽  
Victor L. Landeiro ◽  
João B. Pinho ◽  
...  
Keyword(s):  
Spatial Factors ◽  
Neotropical Wetlands

scholarly journals Stability and generalization in seed dispersal networks: a case study of frugivorous fish in Neotropical wetlands

2016 ◽  
Vol 283 (1837) ◽  
pp. 20161267 ◽  
Author(s):  
Sandra Bibiana Correa ◽  
Joisiane K. Arujo ◽  
Jerry Penha ◽  
Catia Nunes da Cunha ◽  
Karen E. Bobier ◽  
...  
Keyword(s):  
Seed Dispersal ◽  
Plant Species ◽  
Binary Data ◽  
Species Loss ◽  
Small Species ◽  
Network Stability ◽  
Frugivorous Birds ◽  
Neotropical Wetlands ◽  
Using Data

When species within guilds perform similar ecological roles, functional redundancy can buffer ecosystems against species loss. Using data on the frequency of interactions between fish and fruit, we assessed whether co-occurring frugivores provide redundant seed dispersal services in three species-rich Neotropical wetlands. Our study revealed that frugivorous fishes have generalized diets; however, large-bodied fishes had greater seed dispersal breadth than small species, in some cases, providing seed dispersal services not achieved by smaller fish species. As overfishing disproportionately affects big fishes, the extirpation of these species could cause larger secondary extinctions of plant species than the loss of small specialist frugivores. To evaluate the consequences of frugivore specialization for network stability, we extracted data from 39 published seed dispersal networks of frugivorous birds, mammals and fish (our networks) across ecosystems. Our analysis of interaction frequencies revealed low frugivore specialization and lower nestedness than analyses based on binary data (presence–absence of interactions). In that case, ecosystems may be resilient to loss of any given frugivore. However, robustness to frugivore extinction declines with specialization, such that networks composed primarily of specialist frugivores are highly susceptible to the loss of generalists. In contrast with analyses of binary data, recently developed algorithms capable of modelling interaction strengths provide opportunities to enhance our understanding of complex ecological networks by accounting for heterogeneity of frugivore–fruit interactions.

Overfishing disrupts an ancient mutualism between frugivorous fishes and plants in Neotropical wetlands

2015 ◽  
Vol 191 ◽  
pp. 159-167 ◽  
Author(s):  
Sandra Bibiana Correa ◽  
Joisiane K. Araujo ◽  
Jerry M.F. Penha ◽  
Catia Nunes da Cunha ◽  
Pablo R. Stevenson ◽  
...  
Keyword(s):  
Neotropical Wetlands

Neotropical wetlands: Building links among wetland scientists

2004 ◽  
Vol 12 (6) ◽  
pp. 543-546 ◽  
Author(s):  
J. F. Gottgens ◽  
R. H. Fortney
Keyword(s):  
Neotropical Wetlands

scholarly journals Human pressure drives biodiversity–multifunctionality relationships in neotropical wetlands

2021 ◽  
Author(s):  
Dieison Moi ◽  
fernando Lansac-Tôha ◽  
Gustavo Romero ◽  
Thadeu Sobral-Souza ◽  
Bradley Cardinale ◽  
...  
Keyword(s):  
Indirect Effects ◽  
Human Activities ◽  
Ecosystem Metabolism ◽  
Ecosystem Functions ◽  
Nutrient Concentrations ◽  
Human Pressure ◽  
Ecological Functions ◽  
Neotropical Wetlands ◽  
The Relationship ◽  
Ecosystem Multifunctionality

Abstract Many studies have shown that biodiversity regulates a multitude of ecological functions that are needed to maintain the productivity and efficiency of a variety of types of ecosystems. What is not known is how human activities may change the ‘multifunctionality’ of ecosystems as they have both direct impacts on ecosystems and indirect effects on the biodiversity that serves to control ecological functions. Using a database on hundreds of lakes spanning four large neotropical wetlands, we demonstrate that species richness and the functional diversity of fish, macrophytes, microcrustaceans, rotifers, protists, and phytoplankton are positively associated with ecosystem multifunctionality, including nutrient concentrations, standing biomass, and ecosystem metabolism. However, we also found that the relationship between biodiversity and multifunctionality is weakened by human pressures and that part of this impact occurs through changes in biodiversity. Our results suggest that human activities may break down the biological controls needed to maintain the suite of ecosystem functions that sustain wetlands.

Impacts on freshwater macrophytes produced by small invertebrate herbivores: Afrotropical and Neotropical wetlands compared

Hydrobiologia ◽  
2020 ◽  
Vol 847 (19) ◽  
pp. 3931-3950 ◽  
Author(s):  
M. Celeste Franceschini ◽  
Kevin J. Murphy ◽  
Isabel Moore ◽  
Michael P. Kennedy ◽  
Fedra S. Martínez ◽  
...  
Keyword(s):  
Freshwater Macrophytes ◽  
Neotropical Wetlands ◽  
Invertebrate Herbivores

Neotropical wetlands: New instruments in ecosystem management

2004 ◽  
Vol 12 (6) ◽  
pp. 587-596 ◽  
Author(s):  
Steven A. Loiselle ◽  
Simone Bastianoni ◽  
Luca Bracchini ◽  
Claudio Rossi
Keyword(s):  
Ecosystem Management ◽  
Neotropical Wetlands ◽  
New Instruments

Invertebrate dispersal by waterbird species in neotropical wetlands

2024 ◽  
Vol 84 ◽  
Author(s):  
G. G. Silva ◽  
A. J. Green ◽  
C. Stenert ◽  
L. Maltchik
Keyword(s):  
Statistical Models ◽  
Aquatic Invertebrates ◽  
Bird Species ◽  
Neotropical Region ◽  
South American ◽  
Waterbird Species ◽  
Neotropical Wetlands ◽  
Faecal Samples ◽  
Broad Variety ◽  
Biogeographical Regions

Abstract Endozoochory by waterbirds is particularly relevant to the dispersal of non-flying aquatic invertebrates. This ecological function exercised by birds has been demonstrated in different biogeographical regions, but there are no studies for the neotropical region. In this work, we identified propagules of invertebrates in faeces of 14 syntopic South American waterbird species representing six families, and hatched additional invertebrates from cultured faeces. We tested whether propagule abundance, species richness and composition varied among bird species, and between the cold and warm seasons. We found 164 invertebrate propagules in faecal samples from seven different waterbirds species, including eggs of the Temnocephalida and Notonectidae, statoblasts of bryozoans (Plumatella sp.) and ephippia of Cladocera. Ciliates (including Paramecium sp. and Litostomatea), nematodes and rotifers (Adineta sp. and Nottomatidae) hatched from cultured samples. Potential for endozoochory was confirmed for 12 of 14 waterbird species. Our statistical models suggest that richness and abundance of propagules are associated with bird species and not affected by seasonality. Dispersal by endozoochory is potentially important to a broad variety of invertebrates, being promoted by waterbirds with different ecological and morphological traits, which are likely to drive the dispersal of invertebrates in neotropical wetlands.

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