Download imap fish stream protocol table .pdf

Contents : Inventory & Monitoring Protocols Fishes In Small Streams Survey Level Preliminary (office-oriented) Questions Which researchers and knowledgeable people have information on the system and insights for effective inventory and monitoring Identify species present and habitat types from previous studies. Note sample methodology and catch variability. Note rare or protected species What literature and potential inventory and monitoring methods are relevant to this system Familiarize yourself with potential species. Visit fish collections. Site visit with ground-truthing: Walk enough creeks to locate and map all general habitat types and their distribution. Make casual visual observations of fish present. Note possible difficulties for potential sampling gears (e.g. large snags thick aquatic vegetation high water velocity turbidity low/thick bank vegetation conductivity tidal action deep water sensitive species and habitat). Reconnaissance (field-oriented) What is the general type and distribution of habitat(s) Can we initially rule out any sampling gear and methodology Which aquatic and terrestrial habitats directly or indirectly contribute to ecological and physical processes in the aquatic system What is the structure of these habitats How are they distributed How accessible is this system Products Intensive literature review. Consult knowledgeable people Baseline (field-oriented) Methods What are the basic physical and biological attributes of the aquatic system How do they change through time IMAP Inventory Monitoring and Assessment Program Intensive habitat assessment: Seasonal measurements describing spatial and temporal variation in physical chemical and biological attributes. Stream reach survey measurements and classification of streams and reaches (4: ch. 6-7 57: ch.4). Macrohabitat identification substrate analysis cover and refuge assessment stream bank condition associated terrestrial vegetation water flow water temperature water clarity water chemistry (DO H-ion concentration alkalinity hardness total dissolved solids nitrate phosphorus) (4: ch.8-12 14 15 17 18 18 19: ch.3). Baseline-level gear evaluation performed in an experimental manner with sufficient sample effort to allow for basic statistical comparisons (84). Qualitative assessment may also be important. Gear comparison studies found in literature for similar habitats and similar species may be sufficient. Include gear types and methodology that target specific life stages (Ichthyoplankton (8 10 57: ch. 9) escapement/redd and carcass surveys (19: ch.4)). Measure catch efficiency: Mark-recapture studies (49 41 78 65 57: ch.11) or rotenone (often not appropriate) or seining (40 45) have been used to estimate actual populations in an area and can be used to estimate catch efficiency. Partial or preliminary species list. Data and products from previous or similar studies. Basic info on past and present land use as well as present and potential fish community. Basic info on habitat quality and quantity. Conduct preliminary watershed/drainage basin assessment: identify geomorphic properties stream order base flow elevation historic and present land use basin land cover. Identify water body: water body type position identification (lat long/UTM) descriptive attributes (name ownership accessibility). (4: ch.4-5 19: ch.2) Library of previous studies and relevant sampling methodology. Rough map of major habitat distribution. Initial assessment of potential sampling gear and methodology. Intensive habitat assessment. Species richness General relative abundance and temporal trends in fish abundance. Selection of effective gear for Comprehensive Level study. Quantified catch efficiency for Comprehensive Level inventory and monitoring gear. Inventory & Monitoring Protocols Fishes In Small Streams Survey Level Questions Baseline (cont.) Which gear and sampling methodology will be most effective for documenting changes in the abundance of various fish species within the aquatic system (answer Comprehensive Level questions) (72). Methods Seining : One of the most common gear types. Used in lakes estuaries streams rivers and marine environments. Most effective for slow moving water areas with even and firm substrate and a lso little or no aquatic vegetation. Limited by water depth. Can be fairly disruptive to habitat. Seining has been effective in assessing species richness and/or abundance and habitat value (84 81 79 23 22 57: ch.7). Electrofishing : A very common method for sampling fishes. Typically used as boatmounted devices for lakes estuaries and large rivers and as backpack-models for streams (57: ch.8). Can be used in higher water velocities and in areas with uneven substrates and obstructio

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