Impact of urbanization on coastal wetland structure and function

S. Y. Lee, R. J.K. Dunn, R. A. Young, R. M. Connolly, P. E.R. Dale, R. Dehayr, C. J. Lemckert, S. McKinnon, B. Powell, P. R. Teasdale, D. T. Welsh

Research output: Contribution to journalArticle

167 Citations (Scopus)

Abstract

Urbanization is a major cause of loss of coastal wetlands. Urbanization also exerts significant influences on the structure and function of coastal wetlands, mainly through modifying the hydrological and sedimentation regimes, and the dynamics of nutrients and chemical pollutants. Natural coastal wetlands are characterized by a hydrological regime comprising concentrated flow to estuarine and coastal areas during flood events, and diffused discharge into groundwater and waterways during the non-flood periods. Urbanization, through increasing the amount of impervious areas in the catchment, results in a replacement of this regime by concentrating rain run-off. Quality of run-off is also modified in urban areas, as loadings of sediment, nutrients and pollutants are increased in urban areas. While the effects of such modifications on the biota and the physical environment have been relatively well studied, there is to date little information on their impact at the ecosystem level. Methodological issues, such as a lack of sufficient replication at the whole-habitat level, the lack of suitable indices of urbanization and tools for assessing hydrological connectivity, have to be overcome to allow the effects of urbanization to be assessed at the ecosystem level. A functional model is presented to demonstrate the impact of urbanization on coastal wetland structure and function.

Original languageEnglish
Pages (from-to)149-163
Number of pages15
JournalAustral Ecology
Volume31
Issue number2
DOIs
Publication statusPublished - Apr 2006
Externally publishedYes

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coastal wetland
urbanization
wetlands
urban areas
urban area
pollutants
runoff
chemical pollutant
waterways
ecosystems
nutrient
ecosystem
hydrological regime
nutrients
concentrating
pollution load
connectivity
biota
groundwater
replacement

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Lee, S. Y., Dunn, R. J. K., Young, R. A., Connolly, R. M., Dale, P. E. R., Dehayr, R., ... Welsh, D. T. (2006). Impact of urbanization on coastal wetland structure and function. Austral Ecology, 31(2), 149-163. https://doi.org/10.1111/j.1442-9993.2006.01581.x
Lee, S. Y. ; Dunn, R. J.K. ; Young, R. A. ; Connolly, R. M. ; Dale, P. E.R. ; Dehayr, R. ; Lemckert, C. J. ; McKinnon, S. ; Powell, B. ; Teasdale, P. R. ; Welsh, D. T. / Impact of urbanization on coastal wetland structure and function. In: Austral Ecology. 2006 ; Vol. 31, No. 2. pp. 149-163.
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Lee, SY, Dunn, RJK, Young, RA, Connolly, RM, Dale, PER, Dehayr, R, Lemckert, CJ, McKinnon, S, Powell, B, Teasdale, PR & Welsh, DT 2006, 'Impact of urbanization on coastal wetland structure and function', Austral Ecology, vol. 31, no. 2, pp. 149-163. https://doi.org/10.1111/j.1442-9993.2006.01581.x

Impact of urbanization on coastal wetland structure and function. / Lee, S. Y.; Dunn, R. J.K.; Young, R. A.; Connolly, R. M.; Dale, P. E.R.; Dehayr, R.; Lemckert, C. J.; McKinnon, S.; Powell, B.; Teasdale, P. R.; Welsh, D. T.

In: Austral Ecology, Vol. 31, No. 2, 04.2006, p. 149-163.

Research output: Contribution to journalArticle

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Lee SY, Dunn RJK, Young RA, Connolly RM, Dale PER, Dehayr R et al. Impact of urbanization on coastal wetland structure and function. Austral Ecology. 2006 Apr;31(2):149-163. https://doi.org/10.1111/j.1442-9993.2006.01581.x