Evidence details
11 Feb 2020
The evidence record you selected is shown below.
Click 'Duplicate evidence' to create an editable copy of this record.
Study
- Citation
- Webb, J. A., & Keough, M. J. (2002). Measurement of environmental trace-metal levels with transplanted mussels and diffusive gradients in thin films (DGT): a comparison of techniques. Marine Pollution Bulletin.
- Study description
- Passive samplers (DGT) deployed inside and outside of 2 marinas for 2 one month periods and the amounts of four metals (Cu, Zn, Cd, Pb) accumulated compared.
Response
- Cause term/trajectory
-
Hydrology - surface flow (other)
(Increase)
- Cause description
- Amount of water movement inside and outside marinas. Although not quantified directly, there was minimal movement of water inside the marinas.
- Effect term/trajectory
-
Water quality - metals
(Increase)
- Effect description
- The amount of metal accumulated in the DGT sampler over two one-month deployments, one in summer and one in winter. This result is for Cu
- Response measure type
- Other
- Response measure value
- 2.5
- Statistical significance
- NA
- Documentation
- Figure 3
- Response measure description
- results varied among the two marinas and for the two deployments over time, but overall, approximately 2.5 x as much copper accumulated in the samplers inside the marinas compared to outside.
Design
- Source data
- Field
- Study type
- Observation
- Study design
- Control/reference vs. treatment/impact (no before)
- Number of independent control or reference sampling units
- 2
- Number of indendent impact or treatment sampling units
- 1 control, 1 impact at each of 2 independent sampling sites
- Sample size used in analysis
- NA - no analysis
- Design description
- 2 replicates deployed each time, but some of these were lost
Context
- Climate
- Temperate
- Country
- Australia
- Habitat
- Estuary
- Spatial extent
- Regional
- Temporal extent
- Months
- Context description
- Two marinas around Melbourne, Australia, in two different bays