Fish
Lakes
Invasives
Mammals
WILD
100

What is another name for a fishes tail fin

Caudal

100

What were many of the lakes in MN formed by?

Glaciers

100

Name at least 2 invasive species we have in MN

banded mystery snails, Rusty crayfish, spiny waterfleas, common carp, sea lamprey, zebra mussels, curly leaf pondweed, Eurasion watermilfoil, Starry stonewort
100

What is the scoring system we use for White-tail Deer

Boone and Crockett

100

What is the difference between fish and fishes

Fish refers to one fish or many fish of one type, fishes means many different species of fish in a group

200

What is another name for a fishes gill plate / gill cover

Operculum

200

Define Eutrophication

the aging of lakes characterized by increasing amounts of nutrients accumulating in the lake

200

Invasive species are what 2 things

  1. Non-native (alien) to the ecosystem AND

  2. Introduction causes or is likely to cause economic or environmental harm

200

What 2 things can you use to identify animals when you do not actually see them

tracks and scat

200

What is the name for a fishes back fin

Dorsal

300

What are 3 of the 4 types of fish surveying tools we discussed?

  • Electrofishing

  • Trap nets

  • Gill nets

  • Seining

300

What are the three types of lakes from youngest to olders

Oligotrophic, Mesotrohic, Eutrophic

300

True or false, The Ring-necked Pheasant is invasive

False

300

What is yarding up and why do deer do it

Deer group together in large numbers to 

1. Conserve energy

2. Conserve heat

3. Safety in numbers

300

When do deer lose their velvet

August - September

400

What is one positive and one negative of using Trap nets for fish surveying

Positives:

  • Most fish do not die

  • Can target specific species

  • Simple to set up

  • Low environmental impact


Negatives: 

  • Time consuming to place and retrieve

  • Other animals can get caught

  • Lots of maintenance fixing holes


400

What is 1 key characteristic of a mesotrophic lake

  • More nutrients than oligotrophic

  • Occasional algae bloom

  • Organic matter at the bottom

  • Excellent for fishing

400

What is 1 of the 2 problems that carp cause

  • Disrupt native plant roots

  • Declines water quality

400

What deer hunting zone number is Holdingford in 

215

400

What is a riparian zone and what can they help with

Definition: an area of land between land and a river/lake

What can they help with? Reduce nutrient run off entering the lake

500

List the following fish stocking sizes in order from smallest to largest

- Fingerling

- Hatchling

- Fry

(smallest) Hatchling, Fry, Fingerling (biggest)

500

What are the three water layers of the lake

1. Epilimnion

2. Thermocline

3. Hypolimnion 

500

What are 2 of the 3 problems that invasive plants 

  • Form dense mats on the water's surface

  • Overtake habitat

  • Provides unsuitable habitat

500

what 4 types of measurements do you take to score a deer

main beam, tines, circumference, spread

500

What is 1 of the 3 ways biologists are trying to control algae blooms in lakes

Copper based algaecides, aerators, dip/sein nets