Five Years of Biomonitoring at a Southern New Hampshire Stream Otter Brook Farm Harris Center For Conservation Education Rick Van de Poll, Ph. D. Laurel Swope, M. S.
Otter Brook Farm Overview “The Otter Brook Farm Trust exists to preserve the integrity, the stability, the beauty and the sanctity of its community, which includes land, water, plants and animals and the people who live there and those that visit for education and inspiration. ” Otter Brook Farm Mission Statement May 2008
Harris Center in the Schools Program
Otter Brook Farm Project q Began in Spring 2008 q Two local 8 th-Grade classes focus on Field Ecology q High School Envirothon skills training q Adult Ed Programs & Field Trips
Otter Brook Farm Project Over 100 students served each year l Teacher & Parent assisted hands-on learning l Coached by experts & professional biologists l Culminates in June Symposium for both schools l
OBF Water Quality Sampling Sites
Otter Brook Farm Bogle Brook Site Nigronia sp.
Otter Brook Farm Bogle Brook Site Peltoperla sp. Acroneuria sp.
Otter Brook Farm Bogle Brook Site White sucker Creek chub
Otter Brook Farm Bogle Brook Site Siphloplecton sp. Hagenius brevistylus
NH Rapid Stream Assessment Technique This was the data form we first used, which was then modified after several years of field testing
Field Testing Results Using the RSAT Data Form l l l Students were far better collectors than anticipated > 100 bugs were usually collected Species diversity ranged from 17 – 44 spp. Species were regularly ID’d well below RSAT groups The RSAT WQ Index was better understood when based on 100 points
Changes Made to the RSAT Data Form WQ Index based on 100 pts l WQ ratios per group were altered to better reflect distribution data l Tolerance groups were realigned according to EPA biometrics data and regional tolerance values l Greater specificity was given to the level of effort and substrate type(s) sampled l
The EW NH RSAT Data Form N
Sample Species – Nov 2012 Organism Mayflies Heptageniidae - Flathead mayfly Leptophlebiidae - Pronggill mayfly Baetidae - Small Minnow mayfly Other Mayfly Dragonflies (Anisoptera) Aeshna - Darners Boyeria - Fawn Darner Cordulegaster - Spike tail Libellulidae - Skimmer Damselflies (Zygoptera) Calopterygidae - Broadwinged Stoneflies Peltoperlidae - Roachlike stonefly Perlidae - Common stonefly Perlodidae - Perlodid stonefly Chloroperlidae - Green stonefly Nemouridae - Nemourid stonefly Capniidae - Winter stonefly Leuctridae - Rollwinged stonefly True Bugs Notonectidae - Backswimmer Veliidae - Broad-shouldered water strider Gerridae - Common water strider Nepidae - Water scorpion Insect Order Ephemeroptera Ephemeroptera Odonata Odonata Plecoptera Plecoptera Hemiptera # Found 11/13/12 2 11 9 5 1 5 9 1 1 0 6 1 0 0 3 0 0 # Found 11/14/12 10 9 14 2 0 4 4 1 0 0 1 0 0 3 5 9 0 Hemiptera 1 0 0 Total 12 20 23 7 1 9 13 2 1 0 7 1 0 3 8 9 0 2 0 0
Sample Species – Nov 2012 Caddisflies Glossosomidae - Saddlecase makers Hydropsychidae - Common netspinners Hydroptilidae - Micro caddisflies Lepidostomatidae - Box casemakers Leptoceridae - Longhorn casemakers Limnephilidae - Northern casemakers (Pycnopsyche - Leafy casemakers) Phryganeidae - Giant casemakers Rhyacophilidae - Free-living caddisflies Unknown sand casemaker Dobsonflies-Fishflies-Alderflies Corydalus - Dobsonfly Nigronia - Fishfly Sialis - Alderfly Beetles Dytiscidae - Predaceous diving beetle Elmidae - Riffle beetle Gyrinidae - Whirligig beetle Haliplidae - Crawling water beetle Hydrophilidae - Water scavenger beetle Psephenidae - Water penny True Flies Ceratopogonidae - Biting midges Chironomidae - Tanypod bloodworms Chironomidae - Chironomid midges Cuculiidae - Mosquitoes Tipulidae - Craneflies Trichoptera Trichoptera Trichoptera Megaloptera Coleoptera Coleoptera Diptera Diptera 4 8 1 0 0 0 4 0 1 0 0 0 0 6 1 0 0 0 0 0 8 18 0 2 0 0 2 2 1 0 3 0 1 0 3 1 0 0 0 0 12 26 1 2 0 0 6 2 0 4 0 1 0 3 7 1 0 1 sum 81 105 186
Findings for 2008 - 2012
Otter Brook Farm is comprised of 1850 acres, over 1000 acres of which is in permanent conservation. Old growth swamp forests, sinuous beaver meadowlands, centuries old cellar holes, rushing streams & trout-filled brooks are all a part of this remarkable landscape. Yet Otter Brook Farm would not even be known or thought of were it not for the vision of its owners and the following of hundreds of students and visitors who come every year to enjoy its beauty… Otter Brook Farm Landowners Crotched Mountain Foundation Harris Center for Conservation Education Peterborough Conservation Commission NHDES Biomonitoring Program
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