fjord phytoplankton #fjordbiología #chilefoldscope #MicroToxMap

Today we headed out into the fjords to take some depth samples for a transect between the marine station and the salmon and shellfish farms. It will be raining this week so the large layer of fresh water on the top of the fjord will surely be in flux, this can have a large impact on the plankton living within.
We found several different dinoflagellates. While working on classifying them, Jorge, a taxonomist working with microtoxmap, noticed several toxic species in the lower layers. We will need to understand more about the relative abundance, as well as the changes in numbers through time.

4 Comments Add yours

  1. laksiyer says:

    How interesting. What species is the toxic one?

    1. babo989 says:

      Dinophysis acuminata was the notable toxic one. It creates lipophilic diuretic toxins. There are possibly several others, over 25 species were identified and a few are still being analyzed.

  2. susanneS says:

    How deep was the water sample?

    1. babo989 says:

      We took several samples using a niskin bottle, going from 0-10 meters. Due to the large amount of recent rainfall and other conditions in constant flux, the low salinity layer in this fjord seems to extend to ~6m at around 18% salinity. The high amount of dinoflagellates were just under this pycnocline, around 7-8 meters.

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