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Elucidating the effects of global climate change on macroalgae: effects of marine heat waves on populations of Hypnea pseudomusciformis (Gigartinales, Rhodophyta)

Grant number: 18/11445-7
Support type:Scholarships in Brazil - Post-Doctorate
Effective date (Start): April 01, 2019
Field of knowledge:Biological Sciences - Botany - Plant Taxonomy
Principal researcher:Mutue Toyota Fujii
Grantee:Fábio Nauer da Silva
Home Institution: Instituto de Pesquisas Ambientais (IPA). Secretaria do Meio Ambiente (São Paulo - Estado). São Paulo , SP, Brazil
Associated scholarship(s):19/20327-0 - Assessment of temperature and nutrient gradient on seasonal dynamics of Hypnea musciformis complex (Gigartinales, Rhodophyta) from South Florida, BE.EP.PD


Global climate change (GCM) has profound implications for marine ecosystems and for the economic and social systems that depend on them. GCMs will have a significant effect on the distributions of a wide variety of species, causing extinctions or population expansions. Although marine macroalgae play critical ecological roles in coastal regions, their responses to climate change are not well understood. The Brazilian coast, which is about 8000 km long and with a latitudinal gradient of 5°N to 33°S, comprises tropical and subtropical ficogeographic environments, and thus meets the criteria for studies on the effect of GCM on marine biodiversity. In this project we propose a case study with the species of red alga Hypnea pseudomusciformis. Using different populations with different thermal characteristics under a temperature and heat wave gradient, we can predict how the impacts of climate change (for example, warming) will affect the distribution of this important species in the Brazilian coast. For this, analysis of representatives of five populations along the Brazilian coast (certified by using molecular tool), combined with physiological data, may provide a large-scale perspective of how different populations respond in their physiological thermal limits, especially in wave events caused by global climate change.

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Scientific publications
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
NAUER, FABIO; BORBUREMA, HENRIQUE D. S.; YOKOYA, NAIR S.; FUJII, MUTUE T. Effects of ocean acidification on growth, pigment contents and antioxidant potential of the subtropical Atlantic red alga Hypnea pseudomusciformis Nauer, Cassano & MC Oliveira (Gigartinales) in laboratory. Rev. bras. Bot., v. 44, n. 1, p. 69-77, MAR 2021. Web of Science Citations: 0.
NAUER, FABIO; NAVES, MATHEUS; PLASTINO, ESTELA MARIA; OLIVEIRA, MARIANA CABRAL; FUJII, MUTUE TOYOTA. Ecotypes of Hypnea pseudomusciformis (Cystocloniaceae, Rhodophyta) revealed by physiological, morphological, and molecular data. JOURNAL OF APPLIED PHYCOLOGY, v. 32, n. 6, p. 4399-4409, DEC 2020. Web of Science Citations: 0.
YOKOYA, NAIR S.; NAUER, FABIO; OLIVEIRA, MARIANA C. Concise review of the genusHypneaJVLamouroux, 1813. JOURNAL OF APPLIED PHYCOLOGY, v. 32, n. 6, p. 3585-3603, DEC 2020. Web of Science Citations: 4.

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