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Terms in this set (209)
-producing oxygen
-preventing shoreline erosion
List the roles plants play
-lessening excess nutrients during growing season
in a healthy aquatic
-stabilizing lake bottom
ecosystem.
-providing food and habitat for fish, waterfowl, and
other aquatic animals
-harm ecology of aquatic ecosystem
-curtail or prevent recreational water uses (e.g.
List ways that excessive fishing, boating, swimming)
plant growth can -impart tastes or odors to drinking water
adversely affect the -hamper water treatment operations
ecology and uses of a -adversely affect aesthetics, resort trade, and
water body. waterfront property values
-produce toxins that harm animals drinking the
water
-growth habits: rooted in shallow water, most
Describe the general growth above water
growth habits of, means -means of dispersal: underground root systems
of dispersal and potential -potential problems: very dense and may exclude
problems caused by: recreational pursuits like boating, fishing, and
Emergent aquatic plants swimming. Purple loosestrife is an example of a
problem species.
, -growth habits: grow mostly under water surface,
pondweeds sometimes have floating leaves in
addition to their submerged leaves; whorled-leaf
plants grow underwater with whorled leaf
attachments
Describe the general
-means of dispersal: pondweeds have extensive
growth habits of, means
root systems, runners, and can also reproduce from
of dispersal and potential
seeds; plants with whorled leaves can disperse
problems caused by:
when uprooted by breaking free and getting moved
Submergent aquatic
by the wind
plants (both pondweeds
-potential problems: most pondweeds not nuisance
and plants with whorled
except for curlyleaf pondweed and sometimes sago
leaves)
pondweed; whorled leaf plants can uproot and
break free easily and drift with wind to clutter
shoreline; Eurasian watermilfoil is an aggressive non-
native that can affect habitat and restrict recreation.
Raking is required to remove these clutters.
-growth habits: occur on water surface and can be
Describe the general
free-floating or rooted with large floating leaves
growth habits of, means
-means of dispersal: free floating plants are easily
of dispersal and potential
windblown. rooted ones not so much
problems caused by:
-potential problems: free-floating plants
Free-floating and rooted
accumulate on shorelines and are difficult to control
floating-leaved aquatic
in large waterbodies; rooted plants are rarely a
plants
nuisance.
-growth habits: found free-floating (planktonic) or
attached to submerged surfaces (filamentous or
Describe the general
"rooted").
growth habits of, means
-means of dispersal: multiply rapidly in warm
of dispersal and potential
weather;
problems caused by:
-potential problems: free-floating algae
Free-floating,
responsible for many nuisance algal blooms
filamentous, and "rooted"
(release toxin, low DO, blue-green algae); removing
algae
rooted algae can allow worse species to come in so
don't mess with them.
, Advantages:
-offer longer-lasting control than some mechanical
methods
-less physical labor
-ultimately cost less
List the advantages and
-important tool for specific nuisance plants/algae
disadvantages of
such as Eurasian watermilfoil and purple loosestrife
chemical control of
Disadvantages:
aquatic plants and algae
-restrictions on water use
-oxygen depletion and fish kills
-sudden nutrient release into water can lead to
other plant or algae problems
-risk to people and nontarget organisms
-maintain balanced communities by feeding on
aquatic plants, insects, and other fish & provide a
Describe the beneficial food source for natural predators
roles of Wisconsin's fish -fishing for food/sport is popular in WI and
populations. ddepends on healthy populations
-fish farms and hatcheries raise fish for food, feed,
fertilizer, bait, and to release
-eliminating undesirable or competing fish from fish
rearing ponds
-removing exotic and other undesirable species
from a waterbody
List 5 types of situations -thinning stunted fish to bring a population into
in which fish control may balance
be warranted -eliminating fish from a hatchery water supply to
prevent a potential reservoir of disease-causing
organisms
-treating fish spawning sites to prevent
overpopulation of an individual species
Explain why post- -because when fish populations are lowered,
treatment management density-dependent population growth allows the
can be important in the population to rebound if not managed post-
long-term success of a treatment
pesticide treatment
project.
, Know the Law: Who do WI DNR Aquatic Plant Management Program
you need to get approval
from to conduct any
chemical treatment for
fish control?
List the 2 main reasons -nuisance
why mosquito control -disease
may be warranted.
-egg: laid in water, hatch in ~3 days, some laid on
dry land and hatch when flooded
Describe the 4 stages of -larva: "wiggler", 4 instars with molting in between
the mosquito life cycle, each, filterers, air tube to breath from surface
including the main -pupa: comma shaped, non-feeding, lasts a few
structural features of days, contain respiratory trumpets, "tumblers"
each -adult: 1 pair wings, elongated probiscis, pair of
antennae, males have bushy antennae while females
have short and sparse antennae
-the types and locations of breeding sites
-# of generations per year
-host preference of the females (what animals they
prefer to get blood from)
List the types of info you
-seasonal population levels and how rainfall affects
need about a mosquito
them
species before you can
-their flight range
develop an effective
-common resting areas
program to control it.
-whether the species can transmit pathogens that
may be present in your area
-whether the mosquitoes carry pathogens that are
present in wildlife populations