Early succession – diatoms, shrimp and fish

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On 10 October 2012, B block marine scientists went down to the Pearson College dock and checked on the substrates that they had suspended in the water on 7 September 2012.

After a month there have been some changes:

 September

A bleach bottle is now covered in benthic diatoms:

 October

So is the piece of cinder block:

 SeptemberOctober

And a glass jar:

 

September

October

The “Kraken” bottle is covered in diatoms too:

September

October

And it is home to at least one dock shrimp:

 

 

 

The tire also housed several shrimp (the photos didn’t turn out though, sorry!)

 

 

And the substrate below…

 

 

…had a crescent gunnel living between the bottle and the mesh covering.

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