Volunteer-based Stream. Macroinvertebrates. Paul Steen Watershed Ecologist Huron River Watershed Council
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1 Volunteer-based Stream Monitoring- Aquatic Macroinvertebrates Paul Steen Watershed Ecologist Huron River Watershed Council
2 Aquatic Insects are Diverse and Interesting!
3 3 Reasons to love aquatic bugs 1. You never know what you will find!
4 3 Reasons to love aquatic bugs 2. Crazy Cay Camouflage!!
5 3 Reasons to love aquatic bugs 3. Tough little buggers
6 Why y collect bugs? g Good science Good indicators of stream conditions Diversity = Healthy stream t Threats to bug diversity Sedimentation Habitat loss Chemical pollution Good for volunteers Easy sampling techniques Generally abundant communities They are fun!
7 How do we collect bugs? Each team member gets a job- collector, scribe, picker, shuttler, leader, etc. Collector works upstream collecting along ~300 foot reach. Collector samples a variety of microhabitats. Store in 70% ethanol until identification. (avoid rubbing alcohol) KEEP THE BUGS LONG TERM Identification events
8 How do we collect bugs? No set bug number or time limit. This differs from DEQ Procedure 51. Some rules of thumb: -Generally, 40 minutes with a single collector- net in the water be flexible based on amount of walking around and collector experience. -BE CONSISTENT so you know what to tell people who ask. -HRWC data- at least 50 creatures (100 preferable)
9 Stream Macroinvertebrate Datasheet Collection Information Stream Conditions Habitats Sampled Identification Assessment Addressing slop in the procedures
10 Aquatic Macroinvertebrate t Identification
11 Classification System Kingdom- Animalia Phylum- Arthropoda, Mollusca, Annelida Class- Insecta (Crustacea, Pelecypoda, Gastropoda, Oligochaeta, Hirundea) Order- i.e. Diptera (true flies) Family- i.e. Tipulidae (crane flies) Genus- Do able but takes a lot of effort. Species- Hope you have your PhD.
12 Complete Metamorphosis Flying Adults Aquatic Pupae P Midge Adults Typically but not always terrestrial (True Fly) Life Cycle Other groups: Beetles Alderflies Dobsonflies Caddisflies Aquatic Larvae (many growth instars) Eggs Eggs E
13 Incomplete Metamorphosis Flying Adults Eggs Dragonfly Adults Dragonfly Nymph (aquatic) Life Cycle Adults (typically Numerous but not always growth hinstars terrestrial ) z Eggs Other groups: Mayflies Stoneflies True Bugs
14 Wiggins. Larvae of the North America Caddisfly Genera (Trichoptera). 2 nd ed Head Thorax Abdomen Peckarsky, et al. Freshwater Macroinvertebrates of Northeastern North America
15 Tips for learning identification? PRACTICE Consider taking a class at a local l college Find a local expert to coach you.
16 Let s meet the bugs! Group 1: Sensitive
17 Caddisflies Phylum: Arthropoda Class: Insecta Order: Trichoptera
18 44mm 3mm
19 Common Net-spinning Caddisfly NOT a sensitive species 10 mm Ph l Phylum: A Arthropoda th d Class: Insecta Order: Trichoptera Family: Hydropsychidae
20 Order Megaloptera: Note the Differences! Hellgrammite (family Corydalidae) No distinct, single tail Phylum: Arthropoda Class: Insecta Order: Megaloptera Generally larger Alderfly (family Sialidae) Distinct, single tail Generally smaller
21 Mayflies Phylum: Arthropoda Class: Insecta Order: Ephemeroptera
22 Gilled Snail Have an operculum or platelike door that protects the opening of the shell and can be quickly closed to avoid predators. Coiled shells that usually open on the right-hand hand side (coils spin clockwise) Phylum: Mollusca Class: Gastropoda Order: various
23 Phylum: Arthropoda Class: Insecta Order: Plecoptera Stonefly Nymph Adult
24
25 Water Penny Phylum: Arthropoda Class: Insecta Order: Coleoptera Family: Psephenidae
26 Watersnipe Fly Phylum: Arthropoda Class: Insecta Order: Diptera Family: Athericidae
27 Group 2: Somewhat-Sensitive
28 Order Megaloptera: Note the Differences! Hellgrammite (family Corydalidae) No distinct, single tail Phylum: Arthropoda Class: Insecta Order: Megaloptera Generally larger Alderfly (family Sialidae) Distinct, single tail Generally smaller
29 Beetles Phylum: Arthropoda Class: Insecta Order: Coleoptera
30 Beetles (order Coleoptera) Chewing or biting mouthparts 3 Pairs of legs Generally well sclerotized
31 Black Fly Phylum: Arthropoda Class: Insecta Order: Diptera Family: Simuliidae
32 Clams & other bivalves (phylum Mollusca, class Pelecypoda) Phylum: Mollusca Class: Pelecypoda Order: various Please ask that your volunteers do not take these from the river
33 Crane Fly Huge Diversity in sizes (one useful character: mandibles on horizontal plane) Phylum: Arthropoda Class: Insecta Order: Diptera Family: Tipulidae
34 Crayfish- Don t collect these either Phylum: Arthropoda Class: Insecta Order: Decapoda
35 Dragonflies & Damselflies Slender body Three tails Stout body No tails Don t confuse Phylum: Arthropoda with mayfly Class: Insecta Order: Odonata Suborder: Anisoptera & Zygoptera
36 Common Net-spinning Caddisfly NOT a sensitive species 10 mm Ph l Phylum: A Arthropoda th d Class: Insecta Order: Trichoptera Family: Hydropsychidae
37 Scuds, Sideswimmers Phylum: Arthropoda Class: Crustacea Order: Amphipoda
38 Sowbugs Phylum: Arthropoda Class: Crustacea Order: Isopoda
39 Group 3: Tolerant
40 Aquatic Worms (class Oligochaeta) Phylum: Annelida Note the segments! Class: Oligochaeta Order: various
41 Leeches Many, many striations (surficial only) 2 suckers- front and back Phylum: Annelida Class: Hirundae Order: various
42 Midges Phylum: Arthropoda Class: Insecta Order: Diptera Family: Chironomidae
43 Miscellaneous Snails Do not have a plate-like covering over the shell opening. Has shell that spirals with opening usually on your left side (counter-clockwise), or shell that is coiled in one plane, or shell that is dome or hat shaped with no coils. Phylum: Mollusca Class: Gastropoda Order: various Left-handed snail Planorbidae Limpets
44 True Bugs Tube-like sucking mouthparts (except in water boatman) Wings hardened near the base and membranous everywhere else Phylum: Arthropoda Class: Insecta Order: Hemiptera
45 Other True Flies Phylum: Arthropoda Already seen Class: Insecta Order: Diptera
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