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Pereyra PER, Hallwass G, Begossi A, Giacomin LL, Silvano RAM. Fishers' Knowledge Reveals Ecological Interactions Between Fish and Plants in High Diverse Tropical Rivers. Ecosystems 2023. [DOI: 10.1007/s10021-023-00818-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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Mihalitsis M, Morais RA, Bellwood DR. Small predators dominate fish predation in coral reef communities. PLoS Biol 2022; 20:e3001898. [PMID: 36445867 PMCID: PMC9707750 DOI: 10.1371/journal.pbio.3001898] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2022] [Accepted: 10/31/2022] [Indexed: 12/03/2022] Open
Abstract
Ecosystem processes are challenging to quantify at a community level, particularly within complex ecosystems (e.g., rainforests, coral reefs). Predation is one of the most important types of species interactions, determining several ecosystem processes. However, while it is widely recognised, it is rarely quantified, especially in aquatic systems. To address these issues, we model predation on fish by fish, in a hyperdiverse coral reef community. We show that body sizes previously examined in fish-fish predation studies (based on a metanalysis), only represent about 5% of likely predation events. The average fish predator on coral reefs is just 3.65 cm; the average fish prey just 1.5 cm. These results call for a shift in the way we view fish predation and its ability to shape the species or functional composition of coral reef fish communities. Considered from a functional group approach, we found general agreement in the distribution of simulated and observed predation events, among both predator and prey functional groups. Predation on coral reefs is a process driven by small fish, most of which are neither seen nor quantified.
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Affiliation(s)
- Michalis Mihalitsis
- Research Hub for Coral Reef Ecosystem Functions, James Cook University, Townsville, Queensland, Australia
- College of Science and Engineering, James Cook University, Townsville, Queensland, Australia
- Australian Research Council Centre of Excellence for Coral Reef Studies, James Cook University, Townsville, Queensland, Australia
- Department of Evolution and Ecology, University of California, Davis, California, United States of America
- * E-mail:
| | - Renato A. Morais
- Research Hub for Coral Reef Ecosystem Functions, James Cook University, Townsville, Queensland, Australia
- College of Science and Engineering, James Cook University, Townsville, Queensland, Australia
- Australian Research Council Centre of Excellence for Coral Reef Studies, James Cook University, Townsville, Queensland, Australia
| | - David R. Bellwood
- Research Hub for Coral Reef Ecosystem Functions, James Cook University, Townsville, Queensland, Australia
- College of Science and Engineering, James Cook University, Townsville, Queensland, Australia
- Australian Research Council Centre of Excellence for Coral Reef Studies, James Cook University, Townsville, Queensland, Australia
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Peluso LM, Mateus L, Penha J, Bailly D, Cassemiro F, Suárez Y, Fantin-Cruz I, Kashiwaqui E, Lemes P. Climate change negative effects on the Neotropical fishery resources may be exacerbated by hydroelectric dams. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 828:154485. [PMID: 35283123 DOI: 10.1016/j.scitotenv.2022.154485] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/19/2021] [Revised: 03/06/2022] [Accepted: 03/07/2022] [Indexed: 06/14/2023]
Abstract
Climate change is now recognized as a reality and along with human pressures such as river fragmentation by dams, amplifies the threats to freshwater ecosystems and their biodiversity. In the Brazilian portion of the Upper Paraguay River Basin (UPRB) that encompasses the Pantanal, one of the largest tropical wetlands in the world, in addition to the high biodiversity found there, fisheries are an important ecosystem service mostly supported by migratory fishes. We estimated the current range of migratory fish of commercial interest, also assessing the climate change effects predicted on the distribution patterns. Then, we assessed the effects of future climate on fish richness, and combining species ranges with routes blocked by artificial dams investigated possible impacts on fishery and food security in the UPRB. Climate change will induce range contraction between 47% and 100% for the species analyzed, and only four migratory fish may have suitable habitat until the end-of-century. The local richness will reduce about 85% in the basin. River fragmentation by dams acting together with climate change will prevent upstream shifts for most fish species. About 4% of present range and up to 45% of future range of migratory fish should be blocked by dams in UPRB. Consequently, this will also negatively affect fishery yield and food security in the future.
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Affiliation(s)
- Luiza Moura Peluso
- Programa de Pós-Graduação em Ecologia e Conservação da Biodiversidade, Instituto de Biociências, Universidade Federal de Mato Grosso, Avenida Fernando Corrêa, 2367, CEP 78060-900 Cuiabá, Mato Grosso, Brazil.
| | - Lúcia Mateus
- Laboratório de Ecologia de Manejo de Recursos Pesqueiros, Centro de Biodiversidade, Instituto de Biociências, Universidade Federal de Mato Grosso, Cuiabá, Mato Grosso, Brazil
| | - Jerry Penha
- Laboratório de Ecologia de Manejo de Recursos Pesqueiros, Centro de Biodiversidade, Instituto de Biociências, Universidade Federal de Mato Grosso, Cuiabá, Mato Grosso, Brazil
| | - Dayani Bailly
- Programa de Pós-Graduação em Ecologia de Ambientes Aquáticos Continentais, Centro de Ciências Biológicas, Universidade Estadual de Maringá, Maringá, Paraná, Brazil
| | | | - Yzel Suárez
- Centro de Estudos em Recursos Naturais, Universidade Estadual de Mato Grosso do Sul, Dourados, Mato Grosso do Sul, Brazil
| | - Ibraim Fantin-Cruz
- Programa de Pós-Graduação em Recursos Hídricos, Universidade Federal de Mato Grosso, Cuiabá, Mato Grosso, Brazil
| | - Elaine Kashiwaqui
- Grupo de Estudos em Ciências Ambientais e Educação, Universidade Estadual de Mato Grosso do Sul, Mundo Novo, Mato Grosso do Sul, Brazil
| | - Priscila Lemes
- Laboratório de Ecologia e Biogeografia da Conservação, Centro de Biodiversidade, Instituto de Biociências, Universidade Federal de Mato Grosso, Cuiabá, Mato Grosso, Brazil
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Donoso I, Fricke EC, Hervías-Parejo S, Rogers HS, Traveset A. Drivers of Ecological and Evolutionary Disruptions in the Seed Dispersal Process: Research Trends and Biases. Front Ecol Evol 2022. [DOI: 10.3389/fevo.2022.794481] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
As the sole opportunity for most plants to move, seed dispersal influences the biodiversity and functioning of plant communities. Global change drivers have the potential to disrupt seed dispersal processes, affecting plant communities and ecosystem functions. Even though much information is available on the effects of seed dispersal disruption (SDD), we still lack a comprehensive understanding of its main causes at a global scale, as well as the potential knowledge gaps derived from research biases. Here we present a systematic review of biotic and abiotic SDDs to ascertain the global change drivers addressed, dispersal modes impacted, plant processes affected, and spatial focus of existing research on this topic up-to-date. Although there are many modes of dispersal and global change drivers in temperate and tropical ecosystems worldwide, research efforts have predominantly addressed the effect of alien species for biotic seed dispersal in temperate systems and oceanic islands as well as how defaunation of bird or mammal dispersers has affected seed removal in the Neotropics. SDD studies were also biased toward forest ecosystems, with few in shrublands or grasslands. Finally, the effects of climate change, ecological consequences at the whole community level, and evolutionary changes were largely unrepresented in SDD studies. These trends are likely due to a combination of true geographic and ecological patterns in seed dispersal and global change and bias in research focus. We conclude that increased research investment in the less-studied systems and a better understanding of potential synergies and feedback between multiple global change drivers will be important to forecast the threats to plant biodiversity and those ecosystem functions derived from seed dispersal in the Anthropocene.
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Correa SB, van der Sleen P, Siddiqui SF, Bogotá-Gregory JD, Arantes CC, Barnett AA, Couto TBA, Goulding M, Anderson EP. OUP accepted manuscript. Bioscience 2022; 72:753-768. [PMID: 35923189 PMCID: PMC9343230 DOI: 10.1093/biosci/biac038] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Riverine floodplains are biologically diverse and productive ecosystems. Although tropical floodplains remain relatively conserved and ecologically functional compared to those at higher latitudes, they face accelerated hydropower development, climate change, and deforestation. Alterations to the flood pulse could act synergistically with other drivers of change to promote profound ecological state change at a large spatial scale. State change occurs when an ecosystem reaches a critical threshold or tipping point, which leads to an alternative qualitative state for the ecosystem. Visualizing an alternative state for Amazonian floodplains is not straightforward. Yet, it is critical to recognize that changes to the flood pulse could push tropical floodplain ecosystems over a tipping point with cascading adverse effects on biodiversity and ecosystem services. We characterize the Amazonian flood pulse regime, summarize evidence of flood pulse change, assess potential ecological repercussions, and provide a monitoring framework for tracking flood pulse change and detecting biotic responses.
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Affiliation(s)
| | | | | | | | | | | | - Thiago B A Couto
- Florida International University Institute of Environment and a member of the Tropical Rivers Lab
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Araujo JM, Correa SB, Penha J, Anderson J, Traveset A. Implications of overfishing of frugivorous fishes for cryptic function loss in a Neotropical floodplain. J Appl Ecol 2021. [DOI: 10.1111/1365-2664.13891] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- Joisiane Mendes Araujo
- Programa de Pós‐Graduação em Ecologia e Conservação da Biodiversidade Instituto de Biociências Universidade Federal de Mato Grosso Cuiabá Brazil
| | - Sandra Bibiana Correa
- Department of Wildlife, Fisheries and Aquaculture Mississippi State University Starkville MS USA
| | - Jerry Penha
- Centro de Biodiversidade Universidade Federal de Mato Grosso Cuiabá Brazil
| | - Jill Anderson
- Department of Genetics, and Odum School of Ecology University of Georgia Athens GA USA
| | - Anna Traveset
- Mediterranean Institute of Advanced Studies (CSIC‐UIB)Terrestrial Ecology Group Mallorca Balearic Islands Spain
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