Alaska Wetlands

Description

alaska ecology study sheet
Zoe Ballard-huffman
Mind Map by Zoe Ballard-huffman, updated more than 1 year ago
Zoe Ballard-huffman
Created by Zoe Ballard-huffman over 6 years ago
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Resource summary

Alaska Wetlands
  1. other birds
    1. birds of prey aka raptors
      1. powerful curved bills
        1. sharp talons
          1. birds, fish, mammals, amphibians, crustaceans
            1. some perch near freshwater wetlands other soar high or low over them
            2. eagles, hawks falcons owls
              1. bald eagles and ospreys common along coast of alaska
                1. buteos "soaring hawks" and owls hunt by perching
                  1. northern harrier "marsh hawk"

                    Annotations:

                    • low flying over prey
              2. the water cycle
                1. amphibians
                  1. amphibians breath and absorb water through their skin.
                    1. all amphibians produce poisonous skin secretions
                      1. keep the skin moist, prevent bacteria, molds, and diseases from entering the body.
                      2. frogs can see in almost all directions
                        1. start out their lives in water, breathing through hills, and eventually develop lungs, which enable them to exist on land.
                          1. cold blooded: they cannot form their own body heat, they take it from the enviroment
                            1. wood frogs life cycle
                              1. 1. they begin their lives as tadpoles
                                1. 2. mature tadpoles have legs
                                  1. 3. by mid summer the tadpoles has developed into a young froglet
                                    1. 4. wood frogs freeze solid during the winter
                                      1. 5. frogs breed as soon as they thaw out
                                      2. amplexus
                                        1. male frog crasps to the female fertlizing eggs, as she lays 2000-3000 eggs in a big jelly like formation. they hatch 4-8 days depending on the temp
                                      3. water birds
                                        1. water fowl
                                          1. ducks
                                            1. courtship rituals
                                              1. different mates every year
                                                1. diving ducks (divers)
                                                  1. clams, insects, crustaceans, fish, deep plants
                                                    1. large mashes and lakes
                                                      1. short pointed wings

                                                        Annotations:

                                                        • because of their wings they need a long space to take off
                                                        1. can dive 150ft
                                                          1. inland, canvasback, redhead, ring-necked, and scaup
                                                            1. seaducks, eiders, soters, long-tailed, harleguin, goldeneyes, bufflehead, and mergansers
                                                            2. puddle ducks (dabblers)
                                                              1. insects, crustaceans on the surface of water
                                                                1. broad wings

                                                                  Annotations:

                                                                  • means they can take of quickly
                                                                  1. small ponds
                                                                    1. mallard, pintail, green-winged teal, american wigeon, gadwalls, northern shoveler

                                                                      Annotations:

                                                                      • Mallard: most common type of duck in north america
                                                                  2. geese, swans
                                                                    1. mate for life
                                                                      1. molt once per year

                                                                        Annotations:

                                                                        • molt means to replace feathers once a year.
                                                                        1. adapted for walking and grazing on land
                                                                      2. loons

                                                                        Annotations:

                                                                        • they eat fish, hense the sharp bills and webbed feet
                                                                        1. sit low in the water
                                                                          1. sink straight down
                                                                            1. they cary their young on their backs
                                                                              1. webbed feet and sharply pointed bills
                                                                              2. grebes
                                                                                1. long skinny necks
                                                                                  1. dive forward
                                                                                    1. fresh water lakes, ponds, and slow moving rivers
                                                                                      1. lobed toes
                                                                                        1. carry young on back
                                                                                          1. western pied-bills in southearn alaska
                                                                                          2. shore birds and waiters
                                                                                            1. long legs, shorts tails, sharp pointed wings
                                                                                              1. bristle-thighed curlew, black turnstone, western sandpiper, nest only in alaskas wetlands
                                                                                                1. dowitchers, godwits, plovers, turnstones, sandpipers, curlews, snipe, phalaropes, yellow legs
                                                                                                2. seabirds
                                                                                                  1. webbed feet
                                                                                                    1. sharp bills
                                                                                                      1. gulls, terns, and cormorants
                                                                                                    2. mammals
                                                                                                      1. beavers
                                                                                                        1. slow river current
                                                                                                          1. enhance the growing conditions for willows
                                                                                                            1. remove the competition of larger, older trees
                                                                                                              1. great moose habitat
                                                                                                              2. the ponds they make from biulding dams, are good spawning habitats
                                                                                                              3. moose
                                                                                                                1. submerge their heads to obtain mineral-rich aquatic plants that help replace calcium lost through nursing or antler development
                                                                                                                  1. feed in ponds
                                                                                                                    1. river floodplains provide abundance of willows, which is a favorite of moose
                                                                                                                    2. nuskrats
                                                                                                                      1. aquatic plants, roots, stems, cattails,lilies, sedges, and grass, mussels, shrimp, and small fish
                                                                                                                        1. keep an air open in the ice to access their cache
                                                                                                                        2. otters and mink
                                                                                                                          1. forage on both land and fresh and salt water
                                                                                                                            1. mink prefer streams, ponds, beaches and marshes
                                                                                                                              1. advantage of an abundance of mice or hares
                                                                                                                              2. polar bears
                                                                                                                                1. classified as marine mammals
                                                                                                                                  1. wetlands and shores are important foraging grounds for polar bears in Summer when seals are out of reach
                                                                                                                                    1. find and eat bird eggs, rodents, and berries
                                                                                                                                  2. fishes use of wetlands
                                                                                                                                    1. nursery areas for many fish species
                                                                                                                                      1. streams, rivers, and riparian wetlands produce the millions of salmon
                                                                                                                                        1. riparian wetlands are ecpecailly important to small fish like sculpins, young freshwater fish, and juvenile salmon.
                                                                                                                                          1. riparian wetlands provide an abundance of envertibrate, food, and protection of strong currents
                                                                                                                                          2. aquatic invertebrates
                                                                                                                                            1. many aquatic invertebrates can be used as an indicator of stream or wetland health, as some are very tolerant of pollution and low oxygen conditions, and some can only inhabit clear, well oxygenated waters
                                                                                                                                              1. grouped according to their ecosystem and feeding functions
                                                                                                                                                1. some like dragonfly larvae and the predacious diving beetle are predators consuming other invertebrates, tiny fish and even tadpoles
                                                                                                                                                  1. shredders: like some stonefly larva, break leaves and other particulates greater then 1mm in size into smaller peices
                                                                                                                                                    1. youngsters dominate: macroinvertebrates in the water are the larva form of terrestrial animals, and are very different looking from their adult counterparts
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