Good work, Mark! The helping hand of man can be good in situations like yours.
Or otherwise, too. Twenty years ago, the "wisdom" of the local governing bodies decided to plant carp in our local lake (Devils Lake) to take care of a burgeoning lake aquatic weed problem (primarily introduced, invasive, foreign aquarium plants like elodea), so people could ski and boat with little bother from the lake flora. "We can make this tourist trap even more idyllic!" The plan worked so well, the lake became sterile. Oxygen starving, stinking, toxic algae began record blooming. No longer could anyone find sport species such as bluegill, crappy, bass, or even the migrating salmon. Only the huge, plant eating carp were left. Fortunately, the carp were sterilized, but are very long-lived (20-30 years...no one knows for sure). The large population of native fish died off as there was no plant cover for spawn and fry. The carp had eaten everything in sight. The carp were even seen rolling up to people's lawns after they mowed their grass to find food! Then, of course, the fish predators such as ducks, loons, eagles, osprey, etc. all began disappearing right along with their prey, the fish. The hand of man screwed things up as usual, it seems. Our lovely lake had become a bathtub.
The same group of carp implementors decided they needed to do something else. In time they proposed poisoning the lake (after putting a bounty on carp failed miserably to reduced the carp population). After, they would re-introduce native species (at some cost to local taxpayers, natch.) But a user group came to the rescue and stopped the poisoning plan in its tracks. Fishermen.
We tried something new, this time involving bass fishermen instead of biologists and bureaucrats. Now and every year, the Oregon Bass Organization organizes a Christmas tree collection after Christmas. We get thousands of trees donated to a site near the lake. Fishermen volunteers lash hundreds of trees together and boat-tow these once-festive clumps out into the lake to submerge and act as reefs and nurseries and protection for the fry. The native fish population, once near extinction is slowly, unfortunately achingly so, returning to its once natural status. The carp are still here, but their lifespans are hopefully soon coming to a natural conclusion.
For several years, we had no loon nesting. I missed their night cries. But the birds, too, are slowly returning to Devils Lake.