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The Maine Rivers Fish Assemblage Assessment: Application to the Presumpscot River in 2006 (2010 State of the Bay Presentation)

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The Maine Rivers Fish Assemblage Assessment: Application to the Presumpscot River in 2006 (2010 State of the Bay Presentation) University of Southern Maine USM Digital Commons Presentations Casco Bay Estuary Partnership (CBEP) 2010 The Maine Rivers Fish Assemblage Assessment: Application to the Presumpscot River in 2006 (2010 State of the Bay Presentation) Chris O. Yoder Lon E. Hersha Midwest Biodiversity Institute Edward T. Rankin Ohio University Follow this and additional works at: https://digitalcommons.usm.maine.edu/cbep-presentations Recommended Citation Yoder, C. O., Hersha, L.E., & Rankin, E.T. (2010). The Maine Rivers Fish Assemblage Assessment: Application to the Presumpscot River in 2006 (2010 State of the Bay Presentation). [Presentation slides]. Portland, ME: University of Southern Maine, Muskie School of Public Service, Casco Bay Estuary Partnership. This Book is brought to you for free and open access by the Casco Bay Estuary Partnership (CBEP) at USM Digital Commons. It has been accepted for inclusion in Presentations by an authorized administrator of USM Digital Commons. For more information, please contact [email protected]. THE MAINE RIVERS FISH ASSEMBLAGE ASSESSMENT: APPLICATION TO THE PRESUMPSCOT RIVER IN 2006 Chris O. Yoder, Research Director Lon E. Hersha, Research Associate Center for Applied Bioassessment and Biocriteria Midwest Biodiversity Institute Columbus, OH Edward T. Rankin, Senior Research Associate Voinovich School for Leadership & Public Affairs Ohio University The Ridges Athens, OH 45701 St. John/ Allagash Aroostook Successful IBI DevelopmentThree Requires Linked Projects:2005/6 a Sufficient Regional Database1.Maine rivers fish assemblage assessment (2001-2007) 2.Connecticut R. fish assemblage2004/5 assessment (2008Presumpscot-9).2002 2003 3.Regional EMAP – 2006New England rivers2008/9 assessment 2008/9(2008-9); part based on NRSA probabilistic sites draw. Why Knowledge of the Fish Assemblage is Important Current Issues: • LimitedWe usedKnowledge to sayof Extant this Faunajust about– limited mostlyMaine, to managed but it species applies (especially to the trout rest and salmon); need to document relative abundance ofof co -Newoccurring England. native and alien species and their respective influence. • Naturally Depauperate Fauna – cold water, coastal drainages – “how will these respond?” • Assess Potential Conflicts with High Profile Restoration Goals – do non-native species pose an unintentional deterrent? Kennebec River (2002-6) . Wyman Dam to Merrymeeting Bay (30 sites, 2 test areas) . Follow-up Waterville to Augusta (2002-6) Androscoggin River (2003) . Errol, NH to Merrymeeting Bay (51 sites) 46.00 Sebasticook River (2003) . Douglas Pond to Winslow (9 sites) Penobscot River (2004) . N. Br. To Hamden (40 sites); included W. Br., E. Br., 5 additional 350+ Samples tributaries Northern Maine Rivers (2005-6) . St. John (14 sites), Allagash (8 sites), Aroostook (10 sites), St. Croix (12 sites) Southern Maine Rivers (2006) . Presumpscot R. (22 sites) . Saco R. (32 sites) Miscellaneous Maine Rivers (2007) . Mattawamkeag R., Rapid R., Moose R., Moosehead Outlets, Dead R., E. Br. Penobscot (22 sites) Sampling Methods Standardized Approach: • Pulsed D.C. boat electrofishing – effort indexed to distance • Electrode array customized for Maine river conditions • Intensive survey design – mainstem & non-wadeable tribs. • Field water quality and habitat data • July – September index period • Sampling guided by a QAPP • Standardized sampling to yield comparable data • All representative habitat types within each site • Geo-referenced sample site location and sample track • Fish are identified to species, enumerated, and weighed • DELT anomalies recorded Logistics: Getting the Right Equipment to a Site Maine Rivers Fish Assemblage Assessment: 2002-7 Key First Task – Understand Current Distribution of Riverine Fish Species: Maine Rivers Fish Distribution Atlas Cold Water Species: Non-Salmonids (Indigenous Natives) Common white sucker (adult life stage) Slimy sculpin Lake chub Burbot Maine Rivers Fish Assemblage Assessment: 2002-7 Introduced Species Smallmouth bass (adult life stage) (Introduced Naturalized c. 1870) Maine Rivers Fish Assemblage Assessment: 2002-7 Thermal? Physical barriers Maine Fish Data: No Smallmouth Bass 350 300 250 This parallels similar observations in 200 Maine lakes 150 Number/Km 100 50 SMSM Bass Bass >10 >0--999 0 SM Bass >100 Minnows-Stickleback All Dace Detailed autecology of known and potential species – 60 species recorded thus far in Maine’s rivers Tiered Aquatic Life Use Conceptual Model: Draft Biological Tiers (10/22 draft) Natural structural, functional, and taxonomic integrity is preserved. 1 Structure and function similar to natural community with some additional 2 taxa & biomass; no or incidental anomalies; sensitive non-native taxa may be present; ecosystem level functions are fully maintained The BiologicalEvident changes Condition in structure Gradient: due to loss of some rare native 3 taxa; shifts in relative abundance; ecosystem level functions fully A conceptual modelmaintained for interpreting through redundant detrimental attributes of the system. change in aquaticModerate ecosystems changes in structure due to replacement of sensitive ubiquitous taxa by more tolerant taxa; 4 overall balanced distribution of all expected taxa; Susan P. Davies andecosystem Susan functions K. Jackson largely maintained. (Ecological Applicationscondition 16:4, shows 2006) signs of physiological Sensitive taxa markedly diminished; 5 stress; ecosystem function shows reduced conspicuously unbalanced distribution of Specific to Ecotype] to Specific complexity and redundancy; increased [ major groups from that expected; organism build up or export of unused materials. Extreme changes in structure; wholesale changes in anomalies may be frequent; taxonomic composition; extreme alterations from 6 ecosystem functions are normal densities; organism condition is often poor; extremely altered. Condition of the Biotic Community Biotic of the Condition LOW Human Disturbance Gradient HIGH Development of tools & methods to ascertain the status of native riverine fish assemblages is a major goal of this project Cold Water Assemblages The “assumed baseline” for the Biological Condition Gradient applicable to Maine’s large rivers BCG Based Conceptual Model: Maine Riverine Fish Assemblage Native inland freshwater & diadromous species (Atlantic salmon, alewife, American 1 shad, American eel, brook trout, native cyprinids, white & longnose sucker) Same as tier 1 except: non-native salmonid species with naturalized 2 populations may co-occur with brook trout. Some native diadromous species are reduced in abundance; shifts towards intermediate tolerances and mesotherms; brook trout are 3 reduced or replaced by non-native naturalized salmonid species. Some native diadromous species are rare or absent; moderately tolerant species predominate; 4 brook trout are absent; non-native mesotherms & eurytherms present; anomalies present. Native diadromous species are absent or brook trout are absent; non-native if present by interventions; some native 5 salmonids are non-reproducing; cyprinids are absent, replaced by non-native eurytherms usually High Gradient Riverine Ecotype] Riverine Gradient High - tolerant and moderately tolerant species; predominate; anomalies present. Native diadromous species rare or absent; tolerant (toxic impacts); non-native species predominate and may become numerous 6 eurytherms predominate; (enrichment); species richness reduced in some cases anomalies frequent. Moderate Condition of the Biotic Community Biotic of the Condition [ LOW Human Disturbance Gradient HIGH Guidelines for Deriving Regionally Relevant “IBI The primary projectType” goal Assessment is the Tools development of a fish IBI tailored to the Maine fish assemblage• Karr et al. (1986) provides guidance for metric development, substitution, Process has been refinedand modification. and “better • Requires detailed knowledge of the quantified” by Hughesregional et faunaal. (1998) including lifeand history, most recently by Whittiertaxonomy, etzoogeography, al. (2007) and natural history. • Requires an extensive database from We retained the conceptualconsistent sampling approach of both of Karr – making this “tooreference mechanical” condition and amay gradient of human disturbance. have unintended• Requires consequences extensive testing of candidate metrics and aggregate indices. “Unique” Character of the Riverine Fish Fauna of Maine . Post-glacial ingress defined “baseline” fauna . Maine Rivers “constrained” to Gulf of Maine. One brief connection to St. Lawrence & none to Connecticut & western river basins. Curry (2007): Late glacial impacts on dispersal and colonization of Atlantic Canada and Maine by freshwater fishes. Quaternary Research 67(2): 225-233. Several “warmwater” species common to this latitude in other regions are not indigenous (blackbass, pike, muskellunge, crappie). “Traditional” IBI vs. Interim Maine IBI “Traditional IBI Metrics: Interim Maine IBI Metrics: 1. Native species richness* 1. Indigenous species richness 2. Darter Species 2. Native cyprinids (less fallfish) 3. Sucker Species 3. %Adult white/longnose biomass 4. Sunfish Species 4. %Blackbass 5. %Intolerant species 5. %Fluvial specialist/dependent 6. %Tolerant species* 6. %Macrohabitat generalists 7. %Omnivores 7. %Benthic insectivores 8. %Insectivores 8. Temperature stenotherms 9. %Top carnivores 9. %Native salmonids 10. %Hybrids 10.Non-guarding lithophils 11. %Diseased individuals 11.%DELT anomalies 12. Number of individuals 12.Non-indigenous species
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