Evaluation of an Experimental Re-introduction of Sockeye Salmon into Skaha Lake; Year 1 of 3, 2000 Technical Report.
Bibliographic record
Abstract
Historical records indicate that sockeye salmon were once found in most of the lakes in the Okanagan River Basin. Currently, the only sockeye population within the Okanagan River Basin is found in Osoyoos Lake. Abundance of this stock has declined significantly in the last fifty years. The Okanagan Nation and tribes in the U.S. have proposed re-introducing the species into Okanagan Lake, which has a large rearing capacity. However, assessing the potential benefits and risks associated with a reintroduction of sockeye salmon into Okanagan Lake is difficult because of uncertainties about factors that determine production of Okanagan sockeye, and potential interactions with other species in Okanagan Lake. Associated with this proposal are the potential risks of re-introduction of sockeye salmon into Okanagan Lake. One of these is the effects of sockeye on the resident Okanagan Lake kokanee population, which has declined significantly in the past several years because of habitat loss due to human encroachment, competition with introduced mysid shrimp, and the reduction of biological productivity in the lake as municipalities have moved to more complete effluent treatment. Another concern is the possibility of the transmission of diseases that are currently not found in Okanagan and Skaha lakes from re-introduced sockeye to resident fish. An additional concern is the risk that exotic species (e.g. tench, largemouth bass), that have become established in southern Okanagan Lakes (principally as a result of purposeful introductions in the US Columbia/Okanagan river system), may be able to extend their range to Skaha and Okanagan Lakes, through fish ladders provided at the outlets of Vaseaux (McIntyre Dam) and Skaha Lakes (Okanagan Falls Dam), for natural upstream migration of sockeye. A transboundary multi-agency workshop was hosted in November of 1997 to discuss the potential risks and benefits of reintroducing sockeye salmon into Okanagan Lake. These discussions were summarized into a Draft Action Plan that recommended that sockeye be re-introduced to Skaha Lake as an experimental management strategy to resolve some of these uncertainties (Peters et al. 1998). The purpose of this project is to assess the risks and benefits of an experimental reintroduction of sockeye salmon into Skaha Lake. The assessment will be accomplished by completing the following six objectives over three years: (1) Disease Risk Assessment; (2) Exotic species Re-introduction risk Assessment; (3) Inventory of Existing Habitat and Opportunities for Habitat Enhancement; (4) Development of a life-cycle model of Okanagan salmonids, including interaction with resident kokanee; (5) Development of an experimental design and; (6) Finalize a plan for experimental re-introduction of sockeye salmon into Skaha Lake and associated monitoring programs.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.002 | 0.001 |
| Meta-epidemiology (narrow) | 0.001 | 0.001 |
| Meta-epidemiology (broad) | 0.001 | 0.001 |
| Bibliometrics | 0.001 | 0.000 |
| Science and technology studies | 0.001 | 0.001 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.001 | 0.002 |
| Insufficient payload (model declined to judge) | 0.004 | 0.001 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".