Papers by Yara Schaeffer-Novelli
Frontiers in Marine Science, 2016
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Galileu, 2001
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Livro de resumos, 2007
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Brazilian marine biodiversity, 2023
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Brazilian Mangroves and Salt Marshes
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Programa e Resumos, 1985
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Resumo, 1991
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Resumos, 1996
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255 Samples were analysed for organic carbon and total nitrogen and stable carbon (δ13Corg) and n... more 255 Samples were analysed for organic carbon and total nitrogen and stable carbon (δ13Corg) and nitrogen (δ15N) isotope composition. Isotopic signatures in crab species did not vary between genders, but tissues (hepatopancreas, stomach content and muscle) showed significant differences. Animal tissues, leaves and sediment stable isotope values varied highly between stations. Leaves ranged between 1.9‰ and 7.1‰ for δ15N and -29.9‰ and -27.5‰ for δ13Corg. δ15N of invertebrate muscle tissue ranged between 7.6‰ and 17.1‰ in medium trophic levels and δ13Corg between 25.2‰ and -18.7‰. The crabs Scylla serrata, Epixanthus dentatus and Episesarma versicolor belong to the highest trophic level as inferred from the high δ15N of their muscle tissue (15.3‰). The gastropod Telescopium telescopium, assumed to be a grazer, is also at the top of the benthic food web and feeds on more nutritious diets, most likely dead organisms. δ13Corg of muscle tissue of crabs, assumed to be herbivorous, and stom...
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info:eu-repo/semantics/nonPublishe
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Aquatic Conservation: Marine and Freshwater Ecosystems, 2013
Although 20% of Brazilian territory is covered by wetlands, wetland inventories are still incompl... more Although 20% of Brazilian territory is covered by wetlands, wetland inventories are still incomplete. In 1993, Brazil signed the Ramsar Convention but a coherent national policy for the sustainable management and protection of wetlands has yet to be established. Major gaps in the definition of a specific wetland policy are twofold: (1) the lack of standardized criteria by which wetlands are defined and delineated that reflects the specific ecological conditions of the country and (2) the lack of a national classification of wetlands that takes into account specific hydrological conditions and respective plant communities. In recent years, efforts have been made at a regional level to improve public awareness of the ecology of Brazilian wetlands, their benefits to society, and the major threats endangering them. Studies have shown that wetlands play a crucial role in the regional hydrological cycle and provide multiple benefits for local populations. Furthermore, Brazilian wetlands c...
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resumos expandidos, 1997
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Anais, 1994
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Papers by Yara Schaeffer-Novelli