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<br /> <br /> <br /> <br /> <br /> <br />Proposal for carp removal during spring migration upstream of Long Lake in Orono MN <br />January 21th, 2022 <br />Prepared For: Jane <br />Davidson LLWA <br /> <br /> <br />Prepared by: <br />Carp Solutions LLC <br />www.carpsolutionsmn.com <br /> <br /> <br />Data collected in previous years showed that a large number (~80%) of common carp <br />that inhabit Long Lake migrate each spring up the creek that flows into the lake from the north <br />(stream inlet is located in the NE area of the lake). These carp are blocked by the man-made <br />dam constructed just below County Road 6. This scenario creates an opportunity to remove <br />large numbers of carp in the spring as they aggregate in the creek below the barrier. Our work <br />conducted in 2021 suggested that 2,900 carp need to be removed to reduce carp biomass in <br />Long Lake to less than 100 kg/ha, which is a management threshold at which water quality and <br />diversity of Navarre aquatic plants may improve. Data collected in 2021 also showed that Long <br />Lake is dominated by large carp that are at least several years old suggesting that production of <br />young carp in that system is relatively low. Thus, removal of adult carp in the spring is expected <br />to be long-lasting (i.e. removed carp are unlikely to be replaced by increased production of young <br />carp). <br /> <br /> <br />We propose a 2-phase approach for removing common carp from the inlet creek in the spring <br />of 2022. <br />Phase I ($9,774) will include <br />1. Installation of a temporary physical fence that will be used as a “gate” that can be closed <br />trapping the carp that aggregate in the stream so they can be confined and removed, <br />2. installation of a PIT antenna that can be used to remotely monitor the presence of carp in the <br />stream and report that to a website so we can mobilize quickly to arrive on site and remove the <br />carp <br />3. Two days of carp removal in the stream using backpack electrofishers. This will allow us to <br />estimate the feasibility of this effort and we will also examine the carp for tags to determine if <br />our population estimate is still valid. <br /> <br />Phase II ($14,160) will include <br />1. Four additional days of carp removal <br />2. Running the PIT antenna for an additional month. <br />3. Data analysis and report.