| Iona
Beach
Plant
Survivability
This summer Vancouver Aquarium volunteers assessed the health
of the plants from the spring planting project. The Jack Pine
were in excellent condition! The deciduous plants were a little
wilted from the summer heat, but the majority of plants were doing
well.
Debris
Surveys
Debris surveys are conducted before and after cleanups to measure
the impact our work is having on the environment. Wow! What a
difference between before and after the spring clean up! Wood
debris was decreased by 5% allowing the marsh vegetation to flourish
and increase by 15%.

Vegetation
Surveys
Carrying out a vegetation survey is not a straightforward job,
but this summer a small group of volunteers headed down to the
marsh and identified the plants at Iona Beach. Artic rush was
the dominant plant at this site. We also saw lots of pacific silverweed
in flower. Plants in the other category included sage, yarrow,
thistle, great sundew, purple loosestrife, dandelions, sandwort,
and sedges.
Invertebrate
Surveys
We have begun a new project this fall - invertebrate surveys.
Invertebrates can be used as an indicator of water quality, thus
giving us another means to measure the condition of the Fraser
River. The diversity of invertebrate species was low, attributed
to the cold November temperature when the survey was done. Amphipods,
invertebrates that are somewhat tolerant to pollution, were by
far the most dominant.
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