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Coastal lagoons and their evolution

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Coastal lagoons and their evolution : a hydromorphological perspective. / Duck, Robert W.; da Silva, Jose Figueiredo.

In: Estuarine, Coastal and Shelf Science, Vol. 110, 2012, p. 2-14.

Research output: Contribution to journalArticle

Harvard

Duck, RW & da Silva, JF 2012, 'Coastal lagoons and their evolution: a hydromorphological perspective' Estuarine, Coastal and Shelf Science, vol 110, pp. 2-14., 10.1016/j.ecss.2012.03.007

APA

Duck, R. W., & da Silva, J. F. (2012). Coastal lagoons and their evolution: a hydromorphological perspective. Estuarine, Coastal and Shelf Science, 110, 2-14. 10.1016/j.ecss.2012.03.007

Vancouver

Duck RW, da Silva JF. Coastal lagoons and their evolution: a hydromorphological perspective. Estuarine, Coastal and Shelf Science. 2012;110:2-14. Available from: 10.1016/j.ecss.2012.03.007

Author

Duck, Robert W.; da Silva, Jose Figueiredo / Coastal lagoons and their evolution : a hydromorphological perspective.

In: Estuarine, Coastal and Shelf Science, Vol. 110, 2012, p. 2-14.

Research output: Contribution to journalArticle

Bibtex - Download

@article{909423bbb1d74a789cede802c4703ddd,
title = "Coastal lagoons and their evolution: a hydromorphological perspective",
author = "Duck, {Robert W.} and {da Silva}, {Jose Figueiredo}",
year = "2012",
doi = "10.1016/j.ecss.2012.03.007",
volume = "110",
pages = "2--14",
journal = "Estuarine, Coastal and Shelf Science",
issn = "0272-7714",

}

RIS (suitable for import to EndNote) - Download

TY - JOUR

T1 - Coastal lagoons and their evolution

T2 - a hydromorphological perspective

A1 - Duck,Robert W.

A1 - da Silva,Jose Figueiredo

AU - Duck,Robert W.

AU - da Silva,Jose Figueiredo

PY - 2012

Y1 - 2012

N2 - From a geoscience perspective, coastal lagoons are essentially ephemeral features which are part of a continuum of coastal environments. Their natural hydromorphological evolution is seldom if ever permitted to take place as a consequence of human action; either directly by engineering interventions, to maintain or create navigable inlets, or indirectly due to activities within their catchment areas. The hydromorphological impacts of historical, contemporary and proposed engineering activities in coastal lagoons around in the world are reviewed and from these a powerful exemplar is that of the Aveiro system in Portugal. Here, two centuries of channelization, jetty and breakwater construction and progressive dredging have transformed a then fluvially dominant system into one that is today tidally dominant. Both the tidal range and tidal prism have increased along with the extent of saline intrusion. The associated stresses imposed by increased tidal currents have, in turn, led to important changes in the sedimentary regime and to the loss of almost all seagrass species which were once abundant in the system. This, along with observations from other related case studies, raises important questions regarding the concept of lagoon ecosystem 'health' and the baseline or reference conditions to which it is assessed. © 2012 Elsevier Ltd. All rights reserved.

AB - From a geoscience perspective, coastal lagoons are essentially ephemeral features which are part of a continuum of coastal environments. Their natural hydromorphological evolution is seldom if ever permitted to take place as a consequence of human action; either directly by engineering interventions, to maintain or create navigable inlets, or indirectly due to activities within their catchment areas. The hydromorphological impacts of historical, contemporary and proposed engineering activities in coastal lagoons around in the world are reviewed and from these a powerful exemplar is that of the Aveiro system in Portugal. Here, two centuries of channelization, jetty and breakwater construction and progressive dredging have transformed a then fluvially dominant system into one that is today tidally dominant. Both the tidal range and tidal prism have increased along with the extent of saline intrusion. The associated stresses imposed by increased tidal currents have, in turn, led to important changes in the sedimentary regime and to the loss of almost all seagrass species which were once abundant in the system. This, along with observations from other related case studies, raises important questions regarding the concept of lagoon ecosystem 'health' and the baseline or reference conditions to which it is assessed. © 2012 Elsevier Ltd. All rights reserved.

UR - http://www.scopus.com/inward/record.url?scp=84859074353&partnerID=8YFLogxK

U2 - 10.1016/j.ecss.2012.03.007

DO - 10.1016/j.ecss.2012.03.007

M1 - Article

JO - Estuarine, Coastal and Shelf Science

JF - Estuarine, Coastal and Shelf Science

SN - 0272-7714

VL - 110

SP - 2

EP - 14

ER -

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