2014
DOI: 10.4236/ojms.2014.42009
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Wind-Driven Dynamics of Beach-Cast Wrack in a Tide-Free System

Abstract: Whereas wrack dynamics on tidally influenced beaches have been studied to some detail, essentially nothing is known about how drift lines in tide-free coastal systems vary in space and time. We provide evidence for high spatial and temporal dynamics of beach-cast wrack on a sand beach in the Western Baltic Sea. Over the course of one year, the amount of weekly deposited macrophyte wrack fluctuated from zero to 3000 g•m −1 shoreline. Wrack mostly accumulated just above the waterline. Part of the beach-cast wrac… Show more

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Cited by 29 publications
(18 citation statements)
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References 15 publications
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“…Heck et al 2008) and environmental forcing acting at local and global (Ochieng and Erftemeijer 1999) scales. Seagrass beach-cast accretes mainly by the influence of the waves M A N U S C R I P T A C C E P T E D ACCEPTED MANUSCRIPT 4 generated when the prevailing coastal winds are perpendicular towards the shore (Ochieng and Erftemeijer 1999, Hammann and Zimmer 2014, Gómez-Pujol et al 2013 if there is sufficient seagrass litter in the water. The same mechanism is responsible for the erosion of seagrass beach-cast, particularly during severe storm events characterized by the presence of high waves and precipitation in the coastal region (Mateo et al 2003).…”
Section: Introductionmentioning
confidence: 99%
See 1 more Smart Citation
“…Heck et al 2008) and environmental forcing acting at local and global (Ochieng and Erftemeijer 1999) scales. Seagrass beach-cast accretes mainly by the influence of the waves M A N U S C R I P T A C C E P T E D ACCEPTED MANUSCRIPT 4 generated when the prevailing coastal winds are perpendicular towards the shore (Ochieng and Erftemeijer 1999, Hammann and Zimmer 2014, Gómez-Pujol et al 2013 if there is sufficient seagrass litter in the water. The same mechanism is responsible for the erosion of seagrass beach-cast, particularly during severe storm events characterized by the presence of high waves and precipitation in the coastal region (Mateo et al 2003).…”
Section: Introductionmentioning
confidence: 99%
“…The size of seagrass beach-cast deposits has been assessed in the past by different methodologies, such as video-monitoring (Almar et al 2008, Nieto et al 2010, Gómez-Pujol et al 2013), photographs , quantification of the amount of the seagrass beach-cast removed in touristic beaches (De Falco et al 2008, Simeone and and in situ measurements (Ochieng and Erftemeijer 1999, Nordstrom et al 2011, Hammann and Zimmer 2014. However, these studies are built on single or short temporal observations, preventing the quantification of stocks, inputs and fate of seagrass beach-cast at annual scale.…”
Section: Introductionmentioning
confidence: 99%
“…The slope of the beach will affect safety and comfort in tourism, especially swimming. The slope of the beach can also experience a change, changes due to the height of the water can cause large changes in the width of the beach [9]. Based on its slope, [4] suggests that the type of beach in general is divided into 4 types namely flat beach, steep and steep slope.…”
Section: Discussionmentioning
confidence: 99%
“…mats are slightly negatively buoyant (Merceron & Morand, 2004), two mechanisms that may bring them to the water’s surface, transitioning from submerged to floating mats, are: (1) turbulence from rising or falling tides which is capable of stirring these floating mats from near the substrate to the surface in shallow systems; and (2) gases, such as hydrogen sulfide, carbon dioxide or methane associated with decomposition (Roden & Tuttle, 1992), and/or oxygen from photosynthesis which propel submerged mats to the surface. When floating, additional tidal forces from the superficial freshwater layer, and/or wind forcing, may lead to greater movement and longer float times (Hammann & Zimmer, 2014). …”
Section: Discussionmentioning
confidence: 99%