Rice Creek Watershed District, 2015 — present
This is a complex project that involves a recreational lake (Long lake) located several miles downstream of five large carp nurseries (Lino Lakes) with adult and juvenile carp moving in large numbers between these systems each year. Our goal is to develop a practical carp management strategy for this system of lakes by addressing key attributes of carp biology. Specifically, we determined the abundance, biomass and age structure of carp inhabiting the system. We also surveyed all locations to determine carp nursery sites. Following that, we installed a PIT antenna along the major migration route and implanted several 100s of carp with miniature tags to monitor the rates with which adults and juveniles move between the lake and the nurseries. Altogether, the data we collected is being used in a population model to determine which combinations of management strategies are most likely to succeed. These will most likely include a combination of aggressive removal in Long Lake using winter seining with a deterrent system to slow down the immigration of juveniles from Lino Lakes to Long Lake. Tests of the deterrent system are scheduled to start in 2017. Stay tuned…
Ramsey-Washington Metro Watershed District, 2015 — present
This project has 3 objectives: monitoring potential nursery ponds for successful reproduction of carp; reducing the adult population in the Phalen Chain of Lakes near Maplewood by approximately 10-15% using a baited box net; and using a statistical model to guide adaptive management. In addition to the main project, we have worked with RWMWD staff to eradicate carp from small basins using a combination of water drawn down using a backpack electrofishing (this involves some major mud wrestling with carp!).
Three Rivers Park District, 2015 — present
Three Rivers Park District contacted Carp Solutions to assist with a chain of lakes that they presumed were infested with carp. These lakes are connected to Lake Independence near Maple Plain, a popular recreational lake. The project had 4 main objectives: Estimating the population and biomass of carp in lakes Ardmore and Spurzem, two lakes closely connected to Lake Independence; Implanting radiotransmitters in adult carp from these two lakes so their movement patterns could be documented; Investigating potential recruitment sites within the chain of lakes using trap net surveys designed to capture young of year carp; and Developing an age structure for Ardmore and Spurzem in order to determine how often carp produce strong year classes within these systems.
Shell Rock River Watershed District, 2016–present
Our work with SRRWD started in October 2016 with 5 objectives: estimating biomass in Albert Lea and Fountain Lakes; determining the age structure of carp population to document historical recruitment (production of young) patterns; investigating movement patterns and using radiotelemetry to locate and target aggregations during netting operations; using a PIT antenna system to test the efficiency of an existing electric barrier; and running management scenarios through our statistical model to determine best options for adaptive carp management.
Scott County Watershed Management Organization, 2016 — present
The project in Cedar Lake near New Prague started in the summer of 2016. It consisted of four main objectives: Estimating the abundance and biomass of carp in Cedar Lake using boat electrofishing surveys; Tracking the movement of adult carp using radiotelemetry to locate their sites of winter aggregations that will be targeted for removal later this winter; Determining age structure and historical recruitment patterns in Cedar Lake; and Compiling data to determine best options for adaptive carp management in Cedar Lake using a population dynamics model.