Eutrophication indicators in the Hutt River Estuary, New Zealand

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Author(s)
Fry, B.
Rogers, K.
Barry, B.
Barr, N.
Dudley, B.
Griffith University Author(s)
Year published
2011
Metadata
Show full item recordAbstract
The Hutt River estuary near Wellington New Zealand has a luxuriant intertidal band of green macroalgae growing throughout the year. Investigations of water chemistry suggested that the upstream freshwater river was likely P-limited and passed on watershed nitrogen nutrients to the estuary. P fertilisation of the estuary from marine waters led to crossing N and P nutrient loadings that support the observed macroalgal proliferation. Chemical analyses of nutrients, macroalgae, and barnacle and mussel consumers were used to understand further the mix of factors controlling eutrophication and food webs in this urban estuary. d15N ...
View more >The Hutt River estuary near Wellington New Zealand has a luxuriant intertidal band of green macroalgae growing throughout the year. Investigations of water chemistry suggested that the upstream freshwater river was likely P-limited and passed on watershed nitrogen nutrients to the estuary. P fertilisation of the estuary from marine waters led to crossing N and P nutrient loadings that support the observed macroalgal proliferation. Chemical analyses of nutrients, macroalgae, and barnacle and mussel consumers were used to understand further the mix of factors controlling eutrophication and food webs in this urban estuary. d15N and d13C were respective helpful indicators of watershed N inputs and C cycling between benthic and pelagic parts of the food web.
View less >
View more >The Hutt River estuary near Wellington New Zealand has a luxuriant intertidal band of green macroalgae growing throughout the year. Investigations of water chemistry suggested that the upstream freshwater river was likely P-limited and passed on watershed nitrogen nutrients to the estuary. P fertilisation of the estuary from marine waters led to crossing N and P nutrient loadings that support the observed macroalgal proliferation. Chemical analyses of nutrients, macroalgae, and barnacle and mussel consumers were used to understand further the mix of factors controlling eutrophication and food webs in this urban estuary. d15N and d13C were respective helpful indicators of watershed N inputs and C cycling between benthic and pelagic parts of the food web.
View less >
Journal Title
New Zealand Journal of Marine and Freshwater Research
Volume
45
Issue
4
Copyright Statement
© 2011 Taylor & Francis. This is an electronic version of an article published in New Zealand Journal of Marine and Freshwater Research [Volume, Issue, Year, Pages]. New Zealand Journal of Marine and Freshwater Research is available online at: http://www.tandfonline.com with the open URL of your article.
Subject
Ecosystem Function
Earth Sciences
Environmental Sciences
Biological Sciences