Relocation of dredged material in estuaries under the aspect of the Water Framework Directive—A comparison of benthic quality indicators at dumping areas in the Elbe estuary

Taupp, Thomas; Wetzel, Markus A.

doi:10.1016/j.ecolind.2013.05.008

Cited by 19 publications

(6 citation statements)

References 44 publications

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“…Nevertheless, in some cases, such as the offshore platforms in the Adriatic Sea, the BOPA index seemed to yield a better assessment of stressed situations than AMBI or M-AMBI (Spagnolo et al, 2014). In the same way, as regards the dumping of dredged material in the Elbe Estuary, the BO2A index showed a better ecological status than the other indices such as AMBI and M-AMBI (Taupp and Wetzel, 2013). It had been extensively noted that BOPA (and BO2A) indices were easier to apply than other indices because the required level of taxonomic knowledge was reduced; it was only necessary to identify amphipods, along with a reduced list of opportunistic polychaetes, and distinguished the genus Jassa from the other amphipods (Jahani et al, 2012).…”

Section: Discussionmentioning

confidence: 79%

“…This ratio has proven especially effective to detect benthic disturbances in response to human pressures resulting from oil spills or offshore oil and gas production (e.g. Gomez and Dauvin, 2000;Nikitik and Robinson, 2003;Andrade and Renaud, 2011;Joydas et al, 2011Joydas et al, , 2012Sukumaran et al, 2013;Seo et al, 2014;Spagnolo et al, 2014), organic enrichment in sediments due to sewage discharge , 2012bVazirizadeh and Arebi, 2011;Subida et al, 2012;Pinedo et al, 2012;Serrano et al, 2014), fish farms (Keeley et al, 2012;Jahani et al, 2012;Karakassis et al, 2013;Zhang et al, 2013;Riera and de-laOssa-Carretero, 2013;Aguado-Giménez et al, 2015), organic and heavy metal contamination and diverse human activities (Dauvin et al, , 2012Munari and Mistri, 2007;Pranovi et al, 2007;Blanchet et al, 2008;Bakalem et al, 2009;Grimes et al, 2010;Pelin, 2011;Wetzel et al, 2012;Caglar and Albayrak, 2012;Saddik and Zourarah, 2013;Taupp and Wetzel, 2013), mosaic of habitats (Bouchet and Sauriau, 2008;Munari and Mistri, 2008;Lavesque et al, 2009;Do et al, 2011Do et al, , 2012Culhane, 2012), eutrophication (Afli et al, 2008;Zhang et al, ...…”

Section: Discussionmentioning

confidence: 99%

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Polychaete/amphipod ratios: An approach to validating simple benthic indicators

Dauvin

Andrade

de-la-Ossa-Carretero

et al. 2016

Ecological Indicators

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a b s t r a c tAmong the macro-invertebrates used for the assessment of soft-bottom communities, most polychaetes are classified as tolerant/opportunistic to pollution while amphipods are considered as sensitive. These taxa have been used in several ecological indices, such as the simple abundance ratio between Polychaeta and Amphipoda or the Benthic Opportunist Annelids Amphipods (BO2A) index, to assess the Ecological Quality Status -EcoQs-of soft-bottom communities. In terms of Taxonomic Sufficiency (TS), the polychaete/amphipod ratio (i.e. at the level of the class/order) has been proved to be effective in identifying major changes in benthic communities following disturbances. However, an underlying issue is to assess the acceptable TS limit value needed to state accurately the quality of the benthic environment. We tested three indices using 18 series of observations carried out in five north-eastern Atlantic and Mediterranean zones impacted by oil spills, oil and gas production, brine and urban sewage, harbours and aquaculture farms within impacted and control areas. Similar results to BO2A were obtained when limiting the TS at the level of Polychaete opportunistic families, which required a lower degree of taxonomic expertise, and classifying all amphipods as sensitive taxa. In such a way that the EcoQs given by the BPOFA (Benthic Polychaete Opportunistic Families Amphipods) was very similar to those given by the BO2A (Benthic Opportunistic Annelids Amphipods).

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Section: Discussionmentioning

confidence: 79%

Section: Discussionmentioning

confidence: 99%

Polychaete/amphipod ratios: An approach to validating simple benthic indicators

Dauvin

Andrade

de-la-Ossa-Carretero

et al. 2016

Ecological Indicators

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“…Thus, soft bottom macrofauna community structure is strongly related to both hydrodynamic force and sediment composition (Warwick and Uncles 1980;Rhoads and Boyer 1982;Yates et al 1993). Therefore, macrofauna communities are often used as an indicator of physical disturbance such as dredging and dumping activities (Muxika et al 2005;Taupp and Wetzel 2013;Whomersly et al 2008), which affects the hydrodynamic regime as well as the sediment composition.…”

Section: Introductionmentioning

confidence: 99%

Benthic biodiversity changes in response to dredging activities during the construction of a deep-water port

et al. 2015

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During the construction of a deep-water port (JadeWeserPort), bathymetry, sediment distribution, and macrofauna community structure were studied in the Inner Jade, a highly anthropogenically impacted tidal channel located in the southern North Sea. In order to assess the effects of additional disturbance by dredging activities, macrofaunal community compositions between 2002 (before the construction work had begun) and 2010 (during the final construction phase) were compared. The sand extraction for land reclamation and the redirection of the fairway changed the bathymetry markedly. While the old fairway in the centre of the study area remained mud dominated, a general increase in coarser sediments was detected in 2010. The dynamic nature of the study area in combination with the direct and indirect effects of dredging increased bathymetric heterogeneity [measured by singlebeam (2002) and multibeam (2010) echo-sounder]. In 2010, the macrofauna community structure roughly resembled the different categories of dredging activities. The most recently dredged northwestern area was inhabited by a community, which was different from the community in the regularly dredged old fairway. Both were different from the community in the northeastern, non-dredged area. In the southern area, and in the transition areas between the other three communities, a fourth community was found. A general increase of macrofaunal abundance and taxa number was observed in 2010, with the exception of the recently dredged area. The structure of the macrofauna community during the port construction phase seemed to be determined by secondary dispersal of the dominant taxa and recolonisation by highly mobile and opportunistic species.

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“…The idea that is usually suggested to reverse this trend is to keep the dredged sediments within the lagoon itself, restoring the eroded salt marshes, for example [31,32]. However, in this case it is necessary to guarantee the sediment quality, which should respect the legal limits in terms of the chemical and ecotoxicological compatibility between the sediments to be relocated and the areas of their destination [33][34][35][36]. Lagoons, as semi-enclosed basins, are usually potentially polluted environments, and thus this is not an analysis with a foregone conclusion.…”

Section: Introductionmentioning

confidence: 99%

Improvement in the Sediment Management of a Lagoon Harbor: The Case of Marano Lagunare, Italy

Bosa

Petti

Pascolo

2021

Water

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Port silting is a common and natural process which often causes serious inconveniences for safe navigation and requires expensive dredging operations to keep the port operative. Sediment deposition is closely related to the exchange water between the basin and the surrounding environment; one way to limit deposits is by reducing the flow entering the port. However, this may be in contrast with the need for adequate sediment quality, which in turn is closely related to an appropriate water current. This seems to be particularly important in lagoon environments, where sediments are often polluted, making its disposal more complicated and costly. The present paper investigates the situation of the port of Marano Lagunare (Italy) by means of a bidimensional morphological-hydrodynamic and spectral coupled model. To reduce the sediment input into the port, the closure of a secondary port entrance is usually suggested. However, this work demonstrates that a complete dredging of the secondary port inlet allows for an increase in water circulation or efficiency renewal, which ensures a better oxygenation at the bottom of the canals.

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Relocation of dredged material in estuaries under the aspect of the Water Framework Directive—A comparison of benthic quality indicators at dumping areas in the Elbe estuary

Cited by 19 publications

References 44 publications

Polychaete/amphipod ratios: An approach to validating simple benthic indicators

Polychaete/amphipod ratios: An approach to validating simple benthic indicators

Benthic biodiversity changes in response to dredging activities during the construction of a deep-water port

Improvement in the Sediment Management of a Lagoon Harbor: The Case of Marano Lagunare, Italy

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