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author | rekado <rekado@elephly.net> | 2013-05-11 20:06:18 +0800 |
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committer | rekado <rekado@elephly.net> | 2013-05-11 20:06:18 +0800 |
commit | 2727dc5dfb2eac4f39d1b203875e6a4104068513 (patch) | |
tree | dd74406937f7bf2f9df840457b1fedd3d9283347 | |
parent | 71e5388bc38239042a1fbff2ee6257529d194028 (diff) |
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-rw-r--r-- | assignment2/mitigation.tex | 18 | ||||
-rw-r--r-- | assignment2/potential-effects.tex | 2 | ||||
-rw-r--r-- | assignment2/references.bib | 7 |
3 files changed, 12 insertions, 15 deletions
diff --git a/assignment2/mitigation.tex b/assignment2/mitigation.tex index 448a369..9cdf874 100644 --- a/assignment2/mitigation.tex +++ b/assignment2/mitigation.tex @@ -44,7 +44,7 @@ The temporary effects of construction work on the river, such as sedimentation from earthworks, could be minimised by establishing permanent vegetated riparian buffers or by using temporary filtering devices such as hay bales or mesh fences to reduce the amount of -sediment polluting the water \parencite{niwa-sediment-mitigation}. A +sediment polluting the water \parencite{niwa-freshwater}. A permanent vegetated buffer zone would not only be a minimisation measure for the effects of construction work, but also reduce the impacts due to leakage from dairy farms. @@ -72,16 +72,12 @@ adverse effects on river water outweigh the effects of energy consumption, wastewater could be treated internally to allow its reuse. Treating wastewater before discharge is also a way to reduce the contamination of waterways with excess nutrients, harmful -bacteria, as well as organic and inorganic compounds. - - - Recover and reuse spilled raw materials and products. - - Process by-products into higher value products instead of waste. - -An alternative to discharging wastewater in rivers is the application -to soils, such as pasture or farm land, thereby recycling nutrients. -Dependent on the amount of nutrients removed by plants or other means, -nutrients can be lost to groundwater or be washed into open water -bodies where they accelerate the process of +bacteria, as well as organic and inorganic compounds. An alternative +to discharging wastewater in rivers is the application to soils, such +as pasture or farm land, thereby recycling nutrients. Dependent on +the amount of nutrients removed by plants or other means, nutrients +can be lost to groundwater or be washed into open water bodies where +they accelerate the process of eutrophication \parencite{chemical}. Hence, this attempt at minimisation will itself be in need of an impact assessment. diff --git a/assignment2/potential-effects.tex b/assignment2/potential-effects.tex index 7fc35d0..25b59a2 100644 --- a/assignment2/potential-effects.tex +++ b/assignment2/potential-effects.tex @@ -75,7 +75,7 @@ spill into nearby water bodies. An excessive increase in suspended sediments in the river affects water clarity, thereby reducing penetration with sunlight which is needed by aquatic plants and algae to grow. Increased turbidity may also make it difficult for fish to -find food or detect predators \parencite{niwa-sediment}. As the +find food or detect predators \parencite{niwa-freshwater}. As the sediment load of a river increases, its flow characteristics change making the conditions less favourable for certain aquatic species and invertebrate habitat may be destroyed by smothering animals, plants diff --git a/assignment2/references.bib b/assignment2/references.bib index 19cfe77..1f95579 100644 --- a/assignment2/references.bib +++ b/assignment2/references.bib @@ -74,9 +74,10 @@ volume={27} } -@online{niwa-sediment, - title={Kaitiaki tools: sediment}, - url={http://www.niwa.co.nz/our-science/freshwater/tools/kaitiaki_tools/impacts/sediment}, +@online{niwa-freshwater, + title={Kaitiaki tools: science centre freshwater and estuaries}, + url={http://www.niwa.co.nz/our-science/freshwater/tools/kaitiaki_tools}, + urldate={2013-05-11}, author={{NIWA}}, year={2009} } |