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Old 05-26-2011, 10:39 AM   #11 (permalink)
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Default Re: DFWAPC & HAAPS San Marcos River Trip

Okay, I found it. Page 3 lists most of the species in the river that we saw (excpet they did not list the Ludwigia palustris we found...unless it was truely L. repens). Get a look at the bottom of that page where it lists %biomass at each sample point. The major "heavy-hitters" are both noxious/invase species. I know they were only counting propagules/floating bits...but that shows how well-suited these invasives are to spreading compared to the natives.

http://apms.org/japm/vol39/v39p75.pdf
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Old 05-26-2011, 10:47 AM   #12 (permalink)
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Cool Re: DFWAPC & HAAPS San Marcos River Trip

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Originally Posted by davemonkey View Post
Is that Potamogeton illinoensis? I think I remember that species being listed as occuring in the river, but I can't find the source where I "think" I got that information. I'll keep hunting to be sure unless someone else knows.
Yes, it is Potamogeton illinoensis. Here's a source: San Marcos Observing System

We found this mid-river in shallow water with swift-flowing current. HeyPK spotted it as we passed by. A quick u-turn and upstream paddling resulted in us grabbing a few stems.



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Old 05-26-2011, 11:02 AM   #13 (permalink)
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Cool Re: DFWAPC & HAAPS San Marcos River Trip

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Great link! Thanks for sharing.

You mentioned a map that shows the approximate location of the Cryptocoryne beckettii. Do you have a link for that?

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Old 05-26-2011, 07:49 PM   #14 (permalink)
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Default Re: DFWAPC & HAAPS San Marcos River Trip

A few more photos:




This green heron was completely habituated to people and was intent on catching a fish. A wild green heron would not let me get within 50 yards.


Saltgrass restaurant.
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Old 05-26-2011, 08:33 PM   #15 (permalink)
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Default Re: DFWAPC & HAAPS San Marcos River Trip

What an outstanding image of the heron!
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