Abstract
This research investigates biogeochemical processes controlling nutrient availability and primary productivity in pools of ephemeral streams of the arid Pilbara region, northwest Australia. I found that phosphorus availability was strongly regulated by interactions with organic matter and the iron-rich sediments that dominate the region. These interactions are in turn mediatedby connectivity to groundwater and pool persistence. Autotroph community structure within pools, particularly of the periphyton, is likely to be sensitive to shifts in both nitrogen and phosphorus availability owing to pool contraction/expansion as a result of climate variation and/or altered discharge patterns associated with mining activities.
Original language | English |
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Qualification | Doctor of Philosophy |
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Award date | 8 Apr 2019 |
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Publication status | Unpublished - 2019 |