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Do Microplastics and Climate Change Negatively Affect Shredder Invertebrates from an Amazon Stream? An Ecosystem Functioning Perspective

2022; RELX Group (Netherlands); Linguagem: Inglês

10.2139/ssrn.4210360

1556-5068

Viviane Caetano Firmino, Renato Tavares Martins, Leandro Schlemmer Brasil, Erlane José Cunha, Raul Bismarck Pinedo, Neusa Hamada, Leandro Juen,

Microplastics and Plastic Pollution

Download This Paper Open PDF in Browser Add Paper to My Library Share: Permalink Using these links will ensure access to this page indefinitely Copy URL Do Microplastics and Climate Change Negatively Affect Shredder Invertebrates from an Amazon Stream? An Ecosystem Functioning Perspective 43 Pages Posted: 5 Sep 2022 See all articles by Viviane FirminoViviane Firminoaffiliation not provided to SSRNRenato Tavares Martinsaffiliation not provided to SSRNLeandro Schlemmer Brasilaffiliation not provided to SSRNErlane José Cunhaaffiliation not provided to SSRNRaul Bismarck Pinedoaffiliation not provided to SSRNNeusa Hamadaaffiliation not provided to SSRNLeandro Juenaffiliation not provided to SSRN Abstract Pollution and climate change are among the main threats to the biodiversity of freshwater ecosystems in the 21st century. We experimentally tested the effect of microplastic and climate change (i.e., increase in temperature and CO2) on the survival and consumption of an Amazon stream shredder. We tested the following hypotheses: (1) increasing microplastic concentrations and, climate change reduce shredders survival due to toxicity and metabolic stress caused by stressors; (2) climate change has a negative effect on shredder consumption, due to stress which increases the metabolic cost of vital functions, but microplastic dose used in the experiment will not change shredder consumption because toxic effects on consumption rates occur only with overdosed and/or when chronically exposed. We combine different concentrations of microplastic: control (0 particles/mL), low (1.8 × 10 particles/mL) and, medium (1.8 × 102 particles/mL) and climate change scenarios that simulate in real-time the increase in temperature and CO2 forecast for 2100 for Amazon: Control air temperature = 26.6ºC, CO2 = 386.4 ppm (real-time, Manaus, Brazil); Intermediate air temperature = 29.7ºC, CO2 = 611.6 ppm; and Extreme air temperature = 31.4ºC, CO2 = 1,066.9 ppm. We found that both stressors have lethal effects, increasing mortality risk, but there was no interaction between both. Shredder consumption was negatively affected only by climate change. Our results indicate that microplastic and climate change have strong effects on the consumption and/or survival of insect shredders in Amazon streams. In addition, microplastic and climate change effects may affect not only at populational level but also in the ecosystem functioning (e.g., nutrient cycling). Integrative approaches to better understand and mitigate the effects of both stressors are necessary, due to plastic pollution and climate change co-occur in the environment. Keywords: aquatic insects, leaf consumption, plastic pollution, survival, warming, CO2 Suggested Citation: Suggested Citation Firmino, Viviane and Martins, Renato Tavares and Brasil, Leandro Schlemmer and Cunha, Erlane José and Pinedo, Raul Bismarck and Hamada, Neusa and Juen, Leandro, Do Microplastics and Climate Change Negatively Affect Shredder Invertebrates from an Amazon Stream? An Ecosystem Functioning Perspective. Available at SSRN: https://ssrn.com/abstract=4210360 Viviane Firmino (Contact Author) affiliation not provided to SSRN ( email ) No Address Available Renato Tavares Martins affiliation not provided to SSRN ( email ) No Address Available Leandro Schlemmer Brasil affiliation not provided to SSRN ( email ) No Address Available Erlane José Cunha affiliation not provided to SSRN ( email ) No Address Available Raul Bismarck Pinedo affiliation not provided to SSRN ( email ) No Address Available Neusa Hamada affiliation not provided to SSRN ( email ) No Address Available Leandro Juen affiliation not provided to SSRN ( email ) No Address Available Download This Paper Open PDF in Browser Do you have a job opening that you would like to promote on SSRN? Place Job Opening Paper statistics Downloads 2 Abstract Views 1 PlumX Metrics Feedback Feedback to SSRN Feedback (required) Email (required) Submit If you need immediate assistance, call 877-SSRNHelp (877 777 6435) in the United States, or +1 212 448 2500 outside of the United States, 8:30AM to 6:00PM U.S. Eastern, Monday - Friday. Submit a Paper Section 508 Text Only Pages SSRN Quick Links SSRN Solutions Research Paper Series Conference Papers Partners in Publishing Jobs & Announcements Newsletter Sign Up SSRN Rankings Top Papers Top Authors Top Organizations About SSRN SSRN Objectives Network Directors Presidential Letter Announcements Contact us FAQs Copyright Terms and Conditions Privacy Policy We use cookies to help provide and enhance our service and tailor content. To learn more, visit Cookie Settings. This page was processed by aws-apollo4 in 0.234 seconds