Give Beach Ecosystems Their Day in the Sun

Dugan, Jenifer E.; Defeo, Omar; Jaramillo, Eduardo; Jones, Alan R.; Lastra, Mariano; Nel, Ronel; Peterson, Charles H.; Scapini, Felicita; Schlacher, Thomas A.; Schoeman, David S.

doi:10.1126/science.329.5996.1146-a

Cited by 96 publications

(63 citation statements)

References 5 publications

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“…Roughly 80% of the total OM transport to ocean sediments happens in the shallow water depths of shelf seas (Figure 1.12; Borges, 2005). Because of their high economic value, shelf seas, sandy shorelines, and estuaries are not only exposed to increasing anthropogenic pressure but are also threatened by sea-level rise (Dugan et al, 2010;Bauer et al, 2013). Despite their importance, carbon cycling dynamics in shelf seas are still not well understood, mostly due to the high complexity of carbon sources and sinks (Gattuso et al, 1998).…”

Section: Sediment and Om Transport From Large Riversmentioning

confidence: 99%

Where Carbon Goes When Water Flows: Carbon Cycling across the Aquatic Continuum

et al. 2017

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The purpose of this review is to highlight progress in unraveling carbon cycling dynamics across the continuum of landscapes, inland waters, coastal oceans, and the atmosphere. Earth systems are intimately interconnected, yet most biogeochemical studies focus on specific components in isolation. The movement of water drives the carbon cycle, and, as such, inland waters provide a critical intersection between terrestrial and marine biospheres. Inland, estuarine, and coastal waters are well studied in regions near centers of human population in the Northern hemisphere. However, many of the world's large river systems and their marine receiving waters remain poorly characterized, particularly in the tropics, which contribute to a disproportionately large fraction of the transformation of terrestrial organic matter to carbon dioxide, and the Arctic, where positive feedback mechanisms are likely to amplify global climate change. There are large gaps in current coverage of environmental observations along the aquatic continuum. For example, tidally-influenced reaches of major rivers and near-shore coastal regions around river plumes are often left out of carbon budgets due to a combination of methodological constraints and poor data coverage. We suggest that closing these gaps could potentially alter global estimates of CO 2 outgassing from surface waters to the atmosphere by several-fold. Finally, in order to identify and constrain/embrace uncertainties in global carbon budget estimations it is important that we further adopt statistical and modeling approaches that have become well-established in the fields of oceanography and paleoclimatology, for example.

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Section: Sediment and Om Transport From Large Riversmentioning

confidence: 99%

Where Carbon Goes When Water Flows: Carbon Cycling across the Aquatic Continuum

et al. 2017

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“…Sandy beaches are threatened ecosystems (Schlacher et al 2007, Defeo et al 2009, Dugan et al 2010, due to rising sea levels and enhanced frequency of intense storms (IPCC 2007) as well as through interactions between manifestations of climate change and management responses intended to counteract ABSTRACT: Despite increasing use of dredged materials as beach fill to protect coastal property and public beaches from storm damage, knowledge of how this practice affects sandy beach ecosystems remains poor. We coupled field monitoring of 2 successive beach disposal events with mesocosm experiments to assess mechanisms of ecological effects of fine sediment disposal.…”

Section: Introductionmentioning

confidence: 99%

Dominant macrobenthic populations experience sustained impacts from annual disposal of fine sediments on sandy beaches

Manning¹,

Peterson²,

Bishop³

2014

Mar. Ecol. Prog. Ser.

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“…, Oliver Zielinski a geochemical cycles, significant disciplinary and interdisciplinary gaps in understanding beach ecosystem functioning remain because most studies were uni-disciplinary and focused either on ecology, physical beach environment, management, or biology (Dugan et al, 2010;Nel et al, 2014). Therefore, we conducted a study that combines the disciplines sedimentology, hydrology, biogeochemistry, microbiology, and ecology.…”

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confidence: 99%

The drivers of biogeochemistry in beach ecosystems: A cross-shore transect from the dunes to the low-water line

et al. 2017

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This study addresses key processes in high-energy beach systems using an interdisciplinary approach. We assess spatial variations in subsurface pore water residence times, salinity, organic matter (OM) availability, and redox conditions and their effects on nutrient cycles as well as on microbial community patterns and microphytobenthos growth. At the study site on Spiekeroog Island, southern North Sea, beach hydrology is characterized by the classical zonation with an upper saline plume (USP), a saltwater wedge, and a freshwater discharge tube in between. Sediment and pore water samples were taken along a cross-shore transect from the dunes to the low-water line reaching sediment depths down to 5 m below sediment surface. Spatial variations in pore water residence time, salinity, and organic matter availability lead to steep redox and nutrient gradients. Vertical and horizontal differences in the microbial community indicate the influence of these gradients and salinity on the community structure. shoreline. We propose that this nutrient efflux triggers growth of microphytobenthos on sediment surfaces of the discharge zone. A first comparison of nutrient discharge rates of the beach site with a nearby sandy backbarrier tidal flat margin indicates that the beach system might be of less importance in supplying recycled nutrients to nearshore waters than the backbarrier tidal flat area.

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Give Beach Ecosystems Their Day in the Sun

Cited by 96 publications

References 5 publications

Where Carbon Goes When Water Flows: Carbon Cycling across the Aquatic Continuum

Where Carbon Goes When Water Flows: Carbon Cycling across the Aquatic Continuum

Dominant macrobenthic populations experience sustained impacts from annual disposal of fine sediments on sandy beaches

The drivers of biogeochemistry in beach ecosystems: A cross-shore transect from the dunes to the low-water line

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