Impacts of urban wastewater discharge on seagrass meadows (Zostera noltii)

Cabaço, Susana; Machás, Raquel; Vieira, Vasco M. N. C. S.; Santos, Rui

doi:10.1016/j.ecss.2007.11.005

Cited by 88 publications

(71 citation statements)

References 35 publications

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“…Only beaches present such a distant impact (5 km) but with a lower strength (0.7 m 2 ; ± 0.7 destroyed for 1 m 2 ; built). Compared to these values, the '500 m safety distance' generally used for seagrass meadows seems untenable Cabaço et al, 2008;Tuya et al, 2014). These data will be very useful for the modeling of anthropogenic pressure impacts and the prediction of the possible ecosystem services loss after construction works.…”

Section: Posidonia Oceanica Meadows: Declining Limits and Lost Areasmentioning

confidence: 99%

The impact of 85 years of coastal development on shallow seagrass beds (Posidonia oceanica L. (Delile)) in South Eastern France: A slow but steady loss without recovery

Holon¹,

Boissery

Guilbert³

et al. 2015

Estuarine, Coastal and Shelf Science

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Keywords: seagrass meadows decline consequences of urbanization large-scale decrease of seagrass meadows loss of marine meadows human-driven impacts anthropogenic pressures a b s t r a c t Shallow Posidonia oceanica beds (0 to À15 m), the most common seagrass in the Mediterranean, were mapped from aerial photographs dating from the 1920's and from 2012 along 800 km of coastline in South-Eastern France (Provence-Alpes-Côte-d'Azur region). Changes in P. oceanica bed spatial distribution (limits and extent) during these 85 years were analyzed in terms of concordance (remaining areas), positive discordance (expanding areas) or negative discordance (lost areas). Lost areas were linked with direct or indirect impacts of coastal development (artificialized coastlines (namely harbours, ports of refuge, landfills, artificial beaches, groynes and pontoons, submarine pipelines and aquatic farms) visible on the photographs. The comparison showed that 73% of the shallow limits have declined. Considering spatial extent, remaining seagrass meadows areas accounted for the major part (85%), while lost areas accounted for 13% and expanding areas for 1.1%. Lost areas were mainly linked with artificial coastlines but 44% remained with undetermined causes (invisible pressures and/or mixed effects). The analysis of 96 coastal facilities creating the artificial (namely man-made) coastlines showed that the highest impact over the longest distance (5 km) was caused by harbours. Only artificial beaches had such a distant impact. Pontoons were the least surrounded by lost seagrass meadows areas. These quantitative data offer important information for marine conservation.

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Section: Posidonia Oceanica Meadows: Declining Limits and Lost Areasmentioning

confidence: 99%

The impact of 85 years of coastal development on shallow seagrass beds (Posidonia oceanica L. (Delile)) in South Eastern France: A slow but steady loss without recovery

Holon¹,

Boissery

Guilbert³

et al. 2015

Estuarine, Coastal and Shelf Science

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“…While low levels of nutrient enrichment may stimulate seagrasses through increased photosynthesis and production, high nutrient enrichment generally leads to negative effects (Burkholder et al 2007). Excessive ammonium may be toxic (Van Katwijk et al 1997;Cabaço et al 2008), while nitrate may inhibit growth due to carbon limitation in some seagrass species (Burkholder et al 1994).…”

Section: Seagrassesmentioning

confidence: 99%

Marine Eutrophication

Jessen¹,

Bednarz²,

Rix³

et al. 2014

Environmental Indicators

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Eutrophication is one of the key local stressors for coastal marine ecosystems, particularly in those locations with many estuaries, intense coastal development or agriculture, and a lack of coastal forests or mangroves. The landderived import of not only inorganic nutrients, such as nitrate and phosphate, but also particulate and dissolved organic matter (POM and DOM) affects the physiology and growth of marine organisms with ensuing effects on pelagic and benthic community structures, as well as cascading effects on ecosystem functioning. Indicators for marine eutrophication are therefore not only key water quality parameters (inorganic and organic nutrient concentrations, oxygen and chlorophyll availability, and biological oxygen demand), but also benthic status and process parameters, such as relative cover and growth rates of indicator algae, invertebrate recruitment, sedimentary oxygen demand, and interactions between indicator organisms. The primary future challenge lies in understanding the interaction between marine eutrophication and the two main marine consequences of climate change, ocean warming, and acidification. Management action should focus on increasing the efficiency of nutrient usage in industry and agriculture, while at the same time minimizing the input of nutrients into marine ecosystems in order to mitigate the negative effects of eutrophication on the marine realm.

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“…One important aspect that must be considered is the consequence of the rapid resource consumption and the associated waste generation and polluting emissions, such as air pollutants emission, wastewater discharge and solid wastes [2][3][4][5][6]. Also, the increasing income and improved life quality require more natural resources [7], Thus, it is essential, and of tremendous significance, to study the complicated interactions between economic, ecological and social systems and quantify various flows [8,9], and to try to provide scientific decision support to policy makers to develop appropriate policies for promoting regional sustainability.…”

Section: Introductionmentioning

confidence: 99%

An Emergy-Based Hybrid Method for Assessing Sustainability of the Resource-Dependent Region

Shi

Chang

et al. 2017

Sustainability

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As the natural resources are getting exhausted, the concept of sustainable development of regions has received increasing attention, especially for resource-dependent cities. In this paper, an innovative method based on emergy analysis and the Human Impact Population Affluence Technology (IPAT) model is developed to analyze the quantitative relationship of economic growth, energy consumption and its overall sustainability level. Taiyuan, a traditional, resource-dependent city in China, is selected as the case study region. The main results show that the total emergy of Taiyuan increased from 9.023 × 10 23 sej in 2007 to 9.116 × 10 23 sej in 2014, with a 38% decline in non-renewable emergy and an increase of imported emergy up to 125%. The regional emergy money ratio (EMB) was reduced by 48% from 5.31 × 10 13 sej/$ in 2007 to 2.74 × 10 13 sej/$ in 2014, indicating that the increasing speed of consuming resources and energy was faster than the increase of GDP, and that Taiyuan's money purchasing power declined. The lower emergy sustainability index (ESI) indicates that Taiyuan was explored and produced large quantities of mineral resources, which puts more stress on the environment as a consequence, and that this is not sustainable in the long run. The IPAT analysis demonstrates that Taiyuan sticks to the efforts of energy conservation and environmental protection. In order to promote regional sustainable development, it is necessary to have an integrated effort. Policy insights suggest that resourceful regions should improve energy and resource efficiency, optimize energy and resourceful structure and carry out extensive public participation.

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Impacts of urban wastewater discharge on seagrass meadows (Zostera noltii)

Cited by 88 publications

References 35 publications

The impact of 85 years of coastal development on shallow seagrass beds (Posidonia oceanica L. (Delile)) in South Eastern France: A slow but steady loss without recovery

The impact of 85 years of coastal development on shallow seagrass beds (Posidonia oceanica L. (Delile)) in South Eastern France: A slow but steady loss without recovery

Marine Eutrophication

An Emergy-Based Hybrid Method for Assessing Sustainability of the Resource-Dependent Region

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