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Inv. Species – Aquatic Plants, Fungi, Viruses

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Presentation on theme: "Inv. Species – Aquatic Plants, Fungi, Viruses"— Presentation transcript:

1 Inv. Species – Aquatic Plants, Fungi, Viruses
Lecture 4

2 Alligatorweed Alternathera philoxeroides
White, ball-like flowers Thin leaves that form star-shapes Generally grows very thickly Found in warmer climates Reduces water flow and quality by blocking sunlight Controls include releasing certain insects, most commonly, the alligator weed flea beetle

3 Brazilian Waterweed Egeria densa
Whorls of 4-6 leaves Leaves have tiny fine teeth along the edges Not found in Michigan Limits water flow and activities such as swimming or fishing Is a popular aquarium plant which is how it spreads so easily (people dumping their aquariums in ponds/lakes) Controls don’t work

4 Caulerpa, Mediterranean Clone Caulerpa taxifolia
Notably has a “neat” arrangement of leaves Aquarium plant, not in the Great Lakes Is said to crowd out many species of fish Helps control polluted waters A certain type of slug helps control, but isn’t able to survive in the Mediterranean where this is more of a problem

5 Common Reed Phragmites australis
Very blowy –Jinyoung Kim Found in Michigan Chokes out other plants such as wild rice/cattails No notable controls

6 Curly Pondweed Potamogeton crispus
Easily identifiable by the oddly shaped leaves Found in the Great Lakes region Competes with native species Clogs waterways (rivers, streams etc) Control is mostly just cutting it down to reduce the population

7 Rock Snot Didymosphenia geminata
Looks like a bunch of goop An invasive species to the southern hemisphere Is a microscopic type of algae Doesn’t pose much threat Just makes recreational fishing/boating annoying Control is mostly just preventing further spread by civilians being careful

8 Eurasian Watermilfoil Myriophyllum spicatum
The leaves have 4 whorls Small orange-red flowers Found in the Great Lakes region Crowds out native species Disrupts recreational activities Controls biologic control (moths or sterile Asian Carp) and manual removal

9 Giant Reed Arundo donax
Mostly only distinguishable from the common reed because it’s giant-sized Found in Michigan Originally introduced to control erosion Crowds out native species Contributes to higher fire frequency/intensity No notable controls

10 Giant Salvinia Salvinia molesta
Is only found floating in the water Looks a bit like a bunch of beans Not found in Michigan Forms mats that block sunlight and reduces oxygen to the water Biologic control (weevil) works best, manual and chemical have been used as well

11 Hydrilla Hydrilla verticillata
Whorls with 2-8 leaves Oftentimes has reddish streaks Not found in Michigan Introduced through aquariums Crowds out native species Messes with irrigation and boating Controls include chemicals, grass carp and various insects

12 Melaleuca Melaleuca quinquenervia
Most notably has brush-like flowers (pink or white) Not found in Michigan Originally introduced for erosion control and beauty Crowds out native species Only control is the regulation of movement of the plant

13 Purple Loosestrife Lythrum salicaria
Reddish stalks Clusters of purple flowers near the top Found in Michigan Introduced through ship’s ballast and for aesthetic purposes Crowds out native species Reduces water flow Controls are mostly biological (beetles)

14 Water Hyacinth Eichhornia crassipes
Notably white-lilac flowers Broad, waxy leaves Found in Michigan Introduced for aesthetic purposes Has the potential to completely cover bodies of water, restricting water flow and oxygen Controls are mostly biological (weevils)

15 Water Lettuce Pistia stratiotes
Thick leaves in a rosette-shape, similar to lettuce Found in Michigan Restricts water flow and oxygen Promotes the growth of mosquitos Controls are primarily manual removal Chemical and biological (weevils/moths) have also been used

16 Water Spinach Ipomoea aquatica
This is the Chinese kind of spinach Leaves are paper-airplane shaped Not found in Michigan Can form mats which block sunlight Is delicious No notable controls

17 Dutch Elm Disease Ophiostoma
Branches, starting from the top, will begin to die prematurely Found in Michigan Introduced through diseased logs w/ beetles Manual removal, chemical treatment and fungal injections have all been used as controls

18 Butternut Canker Sirococcus clavigignenti-juglandacearum
Trees will have these huge gashes Huge problem in Michigan Spread through rain where spores will invade other trees Controls primarily consist of breeding butternut trees to be resistant to this fungus

19 Oak Wilt Ceratocystis fagacearum
Most notably causes discoloration in the leaves Found in Michigan Infected trees will usually die within six months Spreads either through insects or using root connections Controls are primarily prevention rather than curing We usually use careful planning habits

20 Whitenose Bat Syndrome Pseudogymnoascus destructans
This is the one that kills bats I will talk more about this in the binder, don’t think it’s necessary to know for now

21 Viruses Blue Tongue Virus Orbivirus West Nile Virus Flavivirus
Bird Flu H5N5 I will go over these in more detail in the binder

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