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Littérature scientifique sur le sujet « Seagrass wrack »

Auteur : Grafiati
Publié le 1 avril 2023

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Articles de revues sur le sujet "Seagrass wrack"

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Joyce, Matthew A., Sinead M. Crotty, Christine Angelini, Orlando Cordero, Collin Ortals, Davide de Battisti et John N. Griffin. « Wrack enhancement of post-hurricane vegetation and geomorphological recovery in a coastal dune ». PLOS ONE 17, no 8 (31 août 2022) : e0273258. http://dx.doi.org/10.1371/journal.pone.0273258.

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Coastal ecosystems such as sand dunes, mangrove forests, and salt marshes provide natural storm protection for vulnerable shorelines. At the same time, storms erode and redistribute biological materials among coastal systems via wrack. Yet how such cross-ecosystem subsidies affect post-storm recovery is not well understood. Here, we report an experimental investigation into the effect of storm wrack on eco-geomorphological recovery of a coastal embryo dune in north-eastern Florida, USA, following hurricane Irma. We contrasted replicated 100-m2 wrack-removal and unmanipulated (control) plots, measuring vegetation and geomorphological responses over 21 months. Relative to controls, grass cover was reduced 4-fold where diverse storm wrack, including seagrass rhizomes, seaweed, and wood, was removed. Wrack removal was also associated with a reduction in mean elevation, which persisted until the end of the experiment when removal plots had a 14% lower mean elevation than control plots. These results suggest that subsides of wrack re-distributed from other ecosystem types (e.g. seagrasses, macroalgae, uplands): i) enhances the growth of certain dune-building grasses; and ii) boosts the geomorphological recovery of coastal dunes. Our study also indicates that the practice of post-storm beach cleaning to remove wrack–a practice widespread outside of protected areas–may undermine the resilience of coastal dunes and their services.
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Baring, Ryan J., Rebecca E. Lester et Peter G. Fairweather. « Trophic relationships among animals associated with drifting wrack ». Marine and Freshwater Research 69, no 8 (2018) : 1248. http://dx.doi.org/10.1071/mf17274.

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Wrack accumulates commonly in surf zones of sandy beaches and can be a semipermanent feature. Very few studies have investigated the trophic pathways associated with wrack accumulations in sandy beach surf zones, despite their potential importance to nearshore food webs. In the present study, we were specifically interested in determining the fish–wrack trophic associations in the nearshore. Macrophytes, macroinvertebrates and fish were sampled from drifting wrack at two sites with different macrophyte compositions (i.e. algae v. an algae–seagrass mix) in South Australia. The gut contents of fish were sampled, and the δ13C and δ15N stable isotope signatures of fish, macroinvertebrates and macrophytes were analysed. Using both the stable isotope and diet data, we identified that fish are feeding among wrack accumulations, but some unexplained trophic pathways suggest that fish are also likely to be foraging over multiple habitats elsewhere for food. In contrast, there was more evidence that grazing macroinvertebrates may be feeding on and around macrophytes within the accumulations, as well as using them as habitat. Thus, the present study established some baseline trophic pathways associated with wrack accumulations in sandy beach surf zones. Given the modest evidence for use of wrack as a food source, the lower trophic levels of the food webs identified remain unknown and should be an area for future research.
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Cucco, Andrea, Giovanni Quattrocchi, Walter Brambilla, Augusto Navone, Pieraugusto Panzalis et Simone Simeone. « The Management of the Beach-Cast Seagrass Wracks—A Numerical Modelling Approach ». Journal of Marine Science and Engineering 8, no 11 (3 novembre 2020) : 873. http://dx.doi.org/10.3390/jmse8110873.

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Seagrass wrack are commonly found on the beach face of the sandy shore all around the world and often persists in situ during the whole year, favouring the emergence of conflicts for the use of the sandy coasts for bathing or for other recreational purposes. As a consequence, these deposits are often removed from the beach during the summer months, temporary stocked, and relocated on the shore face in the next autumn or winter season. The selection of the sites on the shoreline where the leaves should be released before the storms season is often an issue, considering the optimization needs between the transportation costs and the oceanographic features of the dumping site. In this study, a numerical approach was proposed to identify the most suitable areas for the autumnal repositioning of the seagrass wracks for two beaches of Sardinia, an island located in the Western Mediterranean Sea where Posidonia oceanica (L. Delile, 1813) is the most widespread seagrass species. The method is based on the use of hydrodynamic, wave, and particle tracking models and provides important indications useful for the management of this type of practice that can be extended to all different type of beaches along the Mediterranean coasts.
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Chapman, M. G., et D. E. Roberts. « Use of seagrass wrack in restoring disturbed Australian saltmarshes ». Ecological Management and Restoration 5, no 3 (décembre 2004) : 183–90. http://dx.doi.org/10.1111/j.1442-8903.2004.00207.x.

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Baring, Ryan J., Peter G. Fairweather et Rebecca E. Lester. « Nearshore drift dynamics of natural versus artificial seagrass wrack ». Estuarine, Coastal and Shelf Science 202 (mars 2018) : 164–71. http://dx.doi.org/10.1016/j.ecss.2017.12.017.

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Liu, Songlin, Stacey M. Trevathan-Tackett, Carolyn J. Ewers Lewis, Quinn R. Ollivier, Zhijian Jiang, Xiaoping Huang et Peter I. Macreadie. « Beach-cast seagrass wrack contributes substantially to global greenhouse gas emissions ». Journal of Environmental Management 231 (février 2019) : 329–35. http://dx.doi.org/10.1016/j.jenvman.2018.10.047.

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Beltran, Rafel, Pedro Beca-Carretero, Núria Marbà, Maria Antònia Jiménez et Anna Traveset. « Spatio-temporal variation in macrofauna community structure in Mediterranean seagrass wrack ». Food Webs 25 (décembre 2020) : e00178. http://dx.doi.org/10.1016/j.fooweb.2020.e00178.

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Hemminga, M. A., et J. Nieuwenhuize. « Seagrass wrack-induced dune formation on a tropical coast (Banc d'Arguin, Mauritania) ». Estuarine, Coastal and Shelf Science 31, no 4 (octobre 1990) : 499–502. http://dx.doi.org/10.1016/0272-7714(90)90040-x.

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Lavery, PS, K. McMahon, J. Weyers, MC Boyce et CE Oldham. « Release of dissolved organic carbon from seagrass wrack and its implications for trophic connectivity ». Marine Ecology Progress Series 494 (4 décembre 2013) : 121–33. http://dx.doi.org/10.3354/meps10554.

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Poore, Alistair G. B., et Kimberly M. Gallagher. « Strong consequences of diet choice in a talitrid amphipod consuming seagrass and algal wrack ». Hydrobiologia 701, no 1 (1 août 2012) : 117–27. http://dx.doi.org/10.1007/s10750-012-1263-1.

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Thèses sur le sujet "Seagrass wrack"

1

Arpayoglou, Irene. « Cultivation of Wrack Collected Seagrasses ». NSUWorks, 2004. http://nsuworks.nova.edu/occ_stuetd/285.

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