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- W2743999719 abstract "MEPS Marine Ecology Progress Series Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout the JournalEditorsTheme Sections MEPS 581:21-32 (2017) - DOI: https://doi.org/10.3354/meps12293 Context-dependent interaction between an intertidal sponge and a green macroalga in a variable temperate Patagonian bay Marianela Gastaldi1,2,*, Fausto Nahuel Firstater1,2, Maite Andrea Narvarte1,2, Pedro Daleo1,3 1Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Av. Rivadavia 1917, Capital Federal, Argentina 2Escuela Superior de Ciencias Marinas, Universidad Nacional del Comahue, Güemes 1030, 8520 San Antonio Oeste, Río Negro, Argentina 3Instituto de Investigaciones Marinas y Costera (IIMYC), Universidad Nacional de Mar Del Plata (UNMdP), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Dean Funes 3350, 7600 Mar del Plata, Argentina *Corresponding author: marianelagastaldi@gmail.com ABSTRACT: The stress gradient hypothesis states that positive interactions become more important as physical stress increases. Organisms living in Patagonian intertidal ecosystems are subjected to high desiccation stress due to elevated temperatures and strong winds. In coastal environments, sponges and macroalgae are common benthic organisms, and they occur from the subtidal to intertidal zones. As human pressure has increased in these systems, both sponges and macroalgae have become more abundant, which has led to more frequent interactions between them. To evaluate the interaction between Hymeniacidon perlevis and Ulva lactuca in 2 contrasting environments, we sampled their abundance and conducted field factorial experiments consisting of sponge transplants and manipulation of algal presence. Our results show that in harsher environments, U. lactuca facilitates H. perlevis likely through the reduction of direct solar radiation or high substrate temperature beneath its canopy, whereas in milder environments, U. lactuca negatively affects H. perlevis throughout other physical or chemical mechanisms (e.g. abrasion, feeding interference through changing current dynamics, depletion of oxygen, allelochemical compound production). KEY WORDS: Stress gradient hypothesis · Hymeniacidon perlevis · Ulva lactuca · Intertidal · Shallow subtidal · Temperate Patagonia Full text in pdf format PreviousNextCite this article as: Gastaldi M, Firstater FN, Narvarte MA, Daleo P (2017) Context-dependent interaction between an intertidal sponge and a green macroalga in a variable temperate Patagonian bay. Mar Ecol Prog Ser 581:21-32. https://doi.org/10.3354/meps12293 Export citation RSS - Facebook - Tweet - linkedIn Cited by Published in MEPS Vol. 581. Online publication date: October 13, 2017 Print ISSN: 0171-8630; Online ISSN: 1616-1599 Copyright © 2017 Inter-Research." @default.
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- W2743999719 title "Context-dependent interaction between an intertidal sponge and a green macroalga in a variable temperate Patagonian bay" @default.
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