Human Impact and Management of Coastal and Estuarine Ecosystems

Day, John W.; Yáñez‐Arancibia, Alejandro; Kemp, W. Michael

doi:10.1002/9781118412787.ch19

Cited by 7 publications

(4 citation statements)

References 78 publications

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“…The lower abundance and biomass recorded at the deepest site of the lagoon may be related to the preference of most species for pre-limnic areas in which they find greater availability of food and shelter (Day et al, 2013). Also, deeper zones do not have a structurally complex habitat, which may relate to lower species diversity.…”

Section: Discussionmentioning

confidence: 95%

Structure and diversity of fishes in a freshwater and coastal subtropical lagoon

Ferreira

Guereschi

Machado

et al. 2016

Journal of Fish Biology

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This study examined the fish communities of Peri Lagoon in southern Brazil to aid in the development of an effective management plan because the area is under threat from human activities. Sampling of fish fauna, ichthyoplankton and limnological data were compared between sites, differing by habitat type and characteristics such as depth, substratum composition and vegetation type. Results were significantly related to site, with the highest diversity and abundance recorded at shallow vegetated sites. A total of 14 fish species were recorded throughout the lagoon, with the most abundant being Hyphessobrycon luetkenii. Of the 14 species, half were sampled at their larval stage, suggesting a healthy and protected system. Significantly more larvae and eggs were collected during colder months (autumn to winter) and at sites closer to stream flow, possibly owing to increased food sources and habitat protection. This study highlights the importance of Peri Lagoon as a nursery ground for a wide range of fish species, providing essential information for incorporation into the future protection of fish stocks throughout Brazil.

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Section: Discussionmentioning

confidence: 95%

Structure and diversity of fishes in a freshwater and coastal subtropical lagoon

Ferreira

Guereschi

Machado

et al. 2016

Journal of Fish Biology

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“…An earlier study by Sugimoto et al (2009) also found a positive relationship between nitrate δ 15 N values and the nitrate fraction in TDIN, which they explained by in situ isotopic effects during nitrification. However, whether higher δ 15 N values of nitrate at MC are related to site-specific nitrification rates in our estuary needs further investigation, as the δ 18 O and δ 15 N values of nitrate are rather representative of atmospheric NO 3 deposition values (Durka et al, 1994;Fang et al, 2011) and nitrification is likely to play a minor role at ammonium concentrations < 5 µM (Day et al, 1989) that prevail in the Swan River estuary.…”

Section: Discussionmentioning

confidence: 92%

Can mussels be used as sentinel organisms for characterisation of pollution in urban water systems?

Reichwaldt¹,

Ghadouani²

2016

Preprint

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Abstract. Urbanisation strongly impacts aquatic ecosystems by decreasing water quality and altering water cycles. Today, much effort is put towards the restoration and conservation of urban waterbodies to enhance ecosystem service provision leading to liveable and sustainable cities. To enable a sustainable management of waterbodies, the quantification of the temporal and spatial variability of pollution levels and biogeochemical processes is essential. Stable isotopes have widely been used to identify sources of pollution in ecosystems. For example, increased nitrogen levels in waterbodies are often accompanied with a higher nitrogen stable isotope signature (δ15N), which can then be detected in higher trophic levels such as mussels. The main aim of this study was to assess the suitability of nitrogen stable isotope as measured in mussels, as an indicator able to resolve spatial and temporal variability of nutrient pollution in an urban, tidally influenced estuary (Swan River estuary; Western Australia). Our results showed a trend by which sites with higher nitrates concentrations yielded higher nitrate δ15N values; however, nitrogen concentrations and nitrogen stable isotope signature of nitrate throughout the estuary were well within natural values, indicating groundwater inflow rather than pollution by human activity was responsible for differences between sites. The δ15N signature in mussels was very stable over time within each site which allowed for the detection of spatial difference and indicated that mussels can be used as time-integrated sentinel organism in urban systems. In addition, our study indicates that the nature of the relationship between δ15N in the mussels and the nitrate in the water can provide insights into site specific biogeochemical transformation of nutrients. We suggest that mussels and other sentinel organisms can become a robust tool for the detection and characterization of the dynamics of a number of emerging anthropogenic pollutants of concern in urban water systems.

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“…The displacement of the willow series (Salix fragilis and Salix atrocinerea) to both banks of the Loire, between Saint-Nazaire, Nantes, and Donges is observed as a result of the artificial accumulation of sediments after the channel deepening into the estuary for channelling due to navigation (Figs. [10][11][12][13].…”

Section: Resultsmentioning

confidence: 99%

Plant Landscape and Models of French Atlantic Estuarine Systems. Extended Summary of the Doctoral Thesis

Cianfaglione

2021

Transylvanian Review of Systematical and Ecological Research

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The present study proposes a theoretical common model of environmental gradients and functioning of vegetation and Plant Landscape of the French Atlantic estuarine systems. This model offers a basis to improve classification and ecological studies of estuarine systems, and to helps the monitoring and assessment of land uses, land forms transformation and human impacts, thanks to the develop of a spatio-temporal predictive model based on actual and potential vegetation following a dynamico-catenal approach. In eight selected estuaries, fieldworks was undertook for a total of 98,315 ha highlighting two vegetation series and four geopermaseries, corresponding to 131 plant associations, 60 alliances, 43 orders, and 28 classes. The vegetation of three representative estuaries was mapped, for a total of 74,433 ha. A synthetic scheme of estuary vegetation landscape is proposed, integrating geographical and ecological gradients as well as geomorphologic forms.

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Human Impact and Management of Coastal and Estuarine Ecosystems

Cited by 7 publications

References 78 publications

Structure and diversity of fishes in a freshwater and coastal subtropical lagoon

Structure and diversity of fishes in a freshwater and coastal subtropical lagoon

Can mussels be used as sentinel organisms for characterisation of pollution in urban water systems?

Plant Landscape and Models of French Atlantic Estuarine Systems. Extended Summary of the Doctoral Thesis

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