Bedload and Nearbed Detritus Transport in a Tidal Saltmarsh Creek

Hemminga, M.A.; Cattrijsse, A.; Wielemaker, A.

doi:10.1006/ecss.1996.0005

Cited by 34 publications

(13 citation statements)

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“…Because NP represents the excess of photosynthetically-fixed carbon that is not consumed by local producers and consumers, higher levels of NP should correspond to a greater potential capacity for the system to accumulate and/or export organic carbon. Indeed, systems with large levels of NP are often important sinks of organic carbon and/or can export large amounts of organic carbon to neighboring systems (Suchanek et al 1985, Hemminga et al 1996, Santos et al 2003. On this basis, the decreasing levels of shoalgrass abundance across State Park to Kee's Bayou to Gongora do not seem to largely impact the potential capacity for the lagoons to accumulate and/or export organic carbon, since their system-integrated benthic NP did not vary significantly.…”

Section: Discussionmentioning

confidence: 99%

“…The study of system metabolism is important to ascertain whether a system is a source or sink of carbon and oxygen and to understand its role in ecosystem-scale budgets. System metabolism sets a maximum limit to the capacity of the system to export organic matter and act as a trophic resource for neighboring systems (Hemminga et al 1996, Asmus & Asmus 2000, Santos et al 2003. In addition, the dynamics of system metabolism may also be indicative of the extent of the system's dependence on internal recycling vs. imported resources.…”

Section: Abstract: Seagrass · Halodule Wrightii · Benthic Microalgaementioning

confidence: 99%

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Benthic metabolism across a gradient of anthropogenic impact in three shallow coastal lagoons in NW Florida

Stutes¹,

Cebrián²,

Stutes³

et al. 2007

Mar. Ecol. Prog. Ser.

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Section: Discussionmentioning

confidence: 99%

Section: Abstract: Seagrass · Halodule Wrightii · Benthic Microalgaementioning

confidence: 99%

Benthic metabolism across a gradient of anthropogenic impact in three shallow coastal lagoons in NW Florida

Stutes¹,

Cebrián²,

Stutes³

et al. 2007

Mar. Ecol. Prog. Ser.

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“…In both Europe and America, studies have indicated that usually less than 1%, but occasionally up to 10%, of the organic matter produced is exported as COM, that is, as floating litter, to coastal waters (Hemminga et al 1996b;Wolff et al 1979;Dankers et al 1984;Dame and Kenny 1986). The export of POM and DOM is better known.…”

Section: Saltmarshes and Fluxes Of Organic Mattermentioning

confidence: 96%

Ecohydrology as a new tool for sustainable management of estuaries and coastal waters

Wolanski

Boorman²,

Chı́charo

et al. 2004

Wetlands Ecol Manage

156

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Throughout the world, estuaries and coastal waters have experienced degradation. Present proposed remedial measures based on engineering and technological fix are not likely to restore the ecological processes of a healthy, robust estuary and, as such, will not reinstate the full beneficial functions of the estuary ecosystem. The successful management of estuaries and coastal waters requires an ecohydrologybased, basin-wide approach. This necessitates changing present practices by official institutions based on municipalities or counties as an administrative unit, or the narrowly focused approaches of managers of specific activities (e.g., farming and fisheries, water resources, urban and economic developments, wetlands management and nature conservationists). Without this change in thinking and management concept, estuaries and coastal waters will continue to degrade, whatever integrated coastal management plans are implemented. To help in this process of change there is a need to (1) develop a profound understanding of the effects of biota and biotic processes on mediating estuary response to changing hydrology, sediment and nutrient flux and of the biota on hydrology at the river basin scale, and (2) to develop science-based remediation measures at the river basin scale, with elements of ecohydrology and phytotechnology at their core, to strengthen the ability of the biota to sustain and adapt to human-induced stresses.

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“…The export of organic matter from saltmarshes can be by bedload and nearbed detritus transport, by tidal fluxes (Hemminga et al 1996), or by animals (fishes and birds) feeding in the marsh ecosystem (Deegan & Garrit 1997). The export characteristics of any particular marsh primarily depend on factors such as vegetation type, physiography, and geomorphology (Taylor & Allanson 1995).…”

Section: Introductionmentioning

confidence: 99%

Ecological importance of passive deposition of organic matter into burrows of the SW Atlantic crab Chasmagnathus granulatus

Botto¹,

Iribarne²,

Gutiérrez³

et al. 2006

Mar. Ecol. Prog. Ser.

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The burrowing crab Chasmagnathus granulatus is the most abundant bioturbator in estuarine intertidal sediments from southern Brazil to central Argentina. This crab is a deposit feeder that excavates and maintains large semi-permanent open burrows with funnel shaped entrances. In this study we showed that the funnel shaped burrows with low aspect ratio are the most common and, with field experiments, we demonstrated that these burrows are also the most efficient in the capture of organic matter. As shown by C isotopic signatures, the origin of trapped detrital material is Spartina densiflora. Burrows are distributed in the upper part of estuaries and saltmarshes, mostly in areas of low energy, and cover extensive areas between the marsh vegetation and the open estuary. Through sampling of crab densities and use of satellite images, we estimated the number of burrows of different shapes in the Bahia Blanca estuary (38°50' S), one of the largest estuarine intertidals in the SW Atlantic. After combining this information with the trapping efficiency of burrows of different shapes, we estimated that within 100 d, a crab bed could capture the entire annual production from a marsh area of similar size. Therefore, we suggest that these extensive burrow beds may be considered large macrodetritus retention areas, reducing the amount of organic matter exported from marshes but locally increasing the sediment organic matter content.

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Bedload and Nearbed Detritus Transport in a Tidal Saltmarsh Creek

Cited by 34 publications

References 0 publications

Benthic metabolism across a gradient of anthropogenic impact in three shallow coastal lagoons in NW Florida

Benthic metabolism across a gradient of anthropogenic impact in three shallow coastal lagoons in NW Florida

Ecohydrology as a new tool for sustainable management of estuaries and coastal waters

Ecological importance of passive deposition of organic matter into burrows of the SW Atlantic crab Chasmagnathus granulatus

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