JP:
If you’re not aware of what golden algae is, it a naturally occurring algae that is in the majority of our water system, is that correct?
TM:
It’s a single celled organism it’s pretty much throughout the state of Texas it just based on the water quality. Some of the far East Texas waters don’t have the right PH to allow it to produce toxicity, that is the one unique thing that separates it from, say our normal green algae we’d see in our reservoirs. At times, when conditions are right it can generate a toxin. That toxin is not known to be harmful to humans or mammals and birds, but it is toxic to other fish. It can be toxic to freshwater mussels, aquatic insects, we’re not real sure of the effect on of them with that toxin. So it is just a naturally occurring thing that we just have throughout the state of Texas that we deal with an be aware of. We do sampling in partnership with Parks and Wildlife. Starting in the fall through the spring, it has been seen. It’s not impossible to have a bloom or toxic event in the summer, but monitoring the data over the last 20 years, it definitely seems to be much more of a fall to winter, early spring occurrence for us so we collect samples every month from Possum Kingdom and Granbury with are our reservoirs that have been most impacted by this. We send them to Texas Parks and Wildlife they do cell counts and toxicity analysis. But honestly, it’s also a very elusive little critter and predicting exactly when it’s going to bloom, the conditions that are going to happen and then even more importantly when it’s going to become toxic has eluded pretty much the best minds around the globe. Golden algae is not just unique to Texas, it’s throughout a good portion of the United States. There are populations in Israel, Australia, even up in the Norway and Sweden areas have had impacts from golden algae and trying to find a single set of positive factors has been elusive for us. Every time we think we start to figure out the situations and scenarios setting up, it will do something different and surprise us.
JP:
So basically, just a real quick summary of it, golden algae is always there, sometimes it begins to bloom and when it blooms it will be toxic to fish and mussels.
TM:
Not necessarily. It can bloom which means it rapidly increases the size of its population. It can bloom and not be toxic. You might see a tea color to your water, but if you’re not seeing fish dying, there are blooms in East Texas, but because they have a much more acidic pH in their water in East Texas, that seems to prohibit the production of the toxin. They might have a bloom or a relatively clear water body suddenly become kind of a nice tea colored lake, but it’s not toxic. We have seen that from time to time in the Basin. We’ll have high cell counts, but no evidence of toxicity.
JP:
So, I think our question was what are we doing to stop this from happening?
TM:
Theres not a thing you can do, it is part of the natural food chain in our reservoirs and lakes. People have, including the BRA, have spent a lot of money trying to figure out if there’s ways to control it and it again, until you can figure out the exact mechanisms that are triggering the transition to toxicity, there’s not much you can do to develop it. In most of the proposed solutions would have much more severe impacts on our existing fisheries and biota in the reservoir. So, there is not anything currently that we’re aware of that can be done to prevent a toxic bloom or control it.
JP:
And there are people throughout the world that are researching this that have not yet found a means of doing that, so we are just hoping that that doesn’t happen. That we don’t have blooms and toxicity and fish kills like we had a number of times in the past 20 years. But there’s really not way of predicting that.
TM:
I would also caution when people try to eradicate native species, we’re not aware of the Pandora’s box of repercussions that could unfold from doing that. Trying to control something that’s there naturally and does serve a purpose in the ecosystem could have equally detrimental results.
JP:
Well, I hope we answered that question. It was our only question this time. I appreciate your time and answering it for us.