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Tuesday, January 30 • 6:00pm - 9:00pm
Poster Display. Using Fyke Nets to Survey Spring Ponds

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AUTHORS: David A. Seibel, Becca Blado, Taylor J. Curran - Wisconsin Department of Natural Resources - Antigo

ABSTRACT: Spring ponds are generally small (< 5 surface acres), headwater springs with permanently discharging outlet creeks flowing into and contributing to the ecology of trout streams. Spring ponds are coldwater ecosystems and native brook trout waters. Some spring ponds have been naturalized by brown and rainbow trout. Many are small and deep and most have bottoms consisting of deep layers of marl and organic silt making surveying the fish communities difficult with traditional electofishing gears or seines. In the past, we have successfully sampled some spring ponds which have reasonable boat access with a mini-boom electrofishing unit. But many spring ponds do not allow launching anything other than a hand-launched jon boat or canoe. In April 2017, we surveyed two spring ponds using two sizes of nylon fyke nets to determine if that gear and method can representatively sample the trout population and the entire fish community. Two mini-fyke nets, 2 feet high X 3 feet wide with 33 foot leads and 0.1875 inch (3/16”) stretch mesh throughout and two fyke nets, 4 feet high x 6 feet wide with 75 foot leads and 0.7500 inch (3/4”) stretch mesh were fished at the same time in two separate spring ponds to determine: 1) if fyke nets will adequately survey the trout populations in spring ponds, 2) if fyke nets will survey the rest of the fish community in spring ponds, and 3) if mini-fyke nets and regular fyke nets work similarly in regards to sampling the trout and non-trout populations. Both sizes of fyke nets surveyed the adult trout populations adequately. Due to the larger mesh of the bigger fyke nets, they did not capture small trout or most of the forage species representatively. Fyke nets are a viable method to survey trout and fish community assemblages in spring ponds.

Tuesday January 30, 2018 6:00pm - 9:00pm CST
Ballroom C & Foyer

Attendees (7)