A simple technique for estimating the recovery rate of a subtropical estuarine system after a flood event

Christie Schacht, Charles James Lemckert

Research output: Contribution to journalSpecial issue

Abstract

The Fitzroy River is one of Australia's largest river systems, with an estuarine section extending 60 km from its mouth to a tidal limiting barrage. The Fitzroy River, whose catchment is 142450 km2 experiences annual short-lived flooding as a result of intermittent heavy summer rainfall events. This study revealed that the Fitzroy River estuary behaves as an enclosed bay as it does not experience a freshwater inflow after the cessation of a flood event. There was a need to develop a predictive estuarine recovery graph as typical formulas, (such as the fraction of freshwater) did not apply. Implications of this simplistic (salinity recovery) graph will lead to a better understanding and knowledge base for both the independent and commercial fisheries. The reason for this being that a during a flood event, the majority of freshwater species (upstream of the barrage) and estuarine -dependant (downstream) species are washed into the adjacent Pacific Ocean. The re-migration of both the fresh and estuarine dependant species after the flood event is closely related to the rate of salinity recovery
Original languageEnglish
Pages (from-to)415-418
Number of pages4
JournalJournal of Coastal Research
Volume1
Issue number39
Publication statusPublished - 2006
Externally publishedYes

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barrage
river
salinity
river system
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flooding
estuary
catchment
rainfall
ocean
summer
rate
commercial fishery

Cite this

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title = "A simple technique for estimating the recovery rate of a subtropical estuarine system after a flood event",
abstract = "The Fitzroy River is one of Australia's largest river systems, with an estuarine section extending 60 km from its mouth to a tidal limiting barrage. The Fitzroy River, whose catchment is 142450 km2 experiences annual short-lived flooding as a result of intermittent heavy summer rainfall events. This study revealed that the Fitzroy River estuary behaves as an enclosed bay as it does not experience a freshwater inflow after the cessation of a flood event. There was a need to develop a predictive estuarine recovery graph as typical formulas, (such as the fraction of freshwater) did not apply. Implications of this simplistic (salinity recovery) graph will lead to a better understanding and knowledge base for both the independent and commercial fisheries. The reason for this being that a during a flood event, the majority of freshwater species (upstream of the barrage) and estuarine -dependant (downstream) species are washed into the adjacent Pacific Ocean. The re-migration of both the fresh and estuarine dependant species after the flood event is closely related to the rate of salinity recovery",
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A simple technique for estimating the recovery rate of a subtropical estuarine system after a flood event. / Schacht, Christie; Lemckert, Charles James.

In: Journal of Coastal Research, Vol. 1, No. 39, 2006, p. 415-418.

Research output: Contribution to journalSpecial issue

TY - JOUR

T1 - A simple technique for estimating the recovery rate of a subtropical estuarine system after a flood event

AU - Schacht, Christie

AU - Lemckert, Charles James

PY - 2006

Y1 - 2006

N2 - The Fitzroy River is one of Australia's largest river systems, with an estuarine section extending 60 km from its mouth to a tidal limiting barrage. The Fitzroy River, whose catchment is 142450 km2 experiences annual short-lived flooding as a result of intermittent heavy summer rainfall events. This study revealed that the Fitzroy River estuary behaves as an enclosed bay as it does not experience a freshwater inflow after the cessation of a flood event. There was a need to develop a predictive estuarine recovery graph as typical formulas, (such as the fraction of freshwater) did not apply. Implications of this simplistic (salinity recovery) graph will lead to a better understanding and knowledge base for both the independent and commercial fisheries. The reason for this being that a during a flood event, the majority of freshwater species (upstream of the barrage) and estuarine -dependant (downstream) species are washed into the adjacent Pacific Ocean. The re-migration of both the fresh and estuarine dependant species after the flood event is closely related to the rate of salinity recovery

AB - The Fitzroy River is one of Australia's largest river systems, with an estuarine section extending 60 km from its mouth to a tidal limiting barrage. The Fitzroy River, whose catchment is 142450 km2 experiences annual short-lived flooding as a result of intermittent heavy summer rainfall events. This study revealed that the Fitzroy River estuary behaves as an enclosed bay as it does not experience a freshwater inflow after the cessation of a flood event. There was a need to develop a predictive estuarine recovery graph as typical formulas, (such as the fraction of freshwater) did not apply. Implications of this simplistic (salinity recovery) graph will lead to a better understanding and knowledge base for both the independent and commercial fisheries. The reason for this being that a during a flood event, the majority of freshwater species (upstream of the barrage) and estuarine -dependant (downstream) species are washed into the adjacent Pacific Ocean. The re-migration of both the fresh and estuarine dependant species after the flood event is closely related to the rate of salinity recovery

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SN - 0749-0208

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