Lake Water and Sediment I. Characteristics and Water Chemistry of Some Canadian East Coast Lakes1
Bibliographic record
Abstract
Sixteen lakes are described, varying in geology and all but Iwo of low productivity, and including three acid bog types. A method is described for indirect estimation of the sum of Na and K. In lakes generally, low pH is related to low conductivity, but in these coastal lakes the Na in ocean spray keeps up the conductivity even in very acid waters. At cquilibrium the inorganic P in solution is 2-3 ppb and reprcscnts a residual soluble fraction, independent of productivity and pII. Total P is 10-15 ppb and the concentration is not related to productivity. There is an annual cycle of inorganic I ’ with a winter maximum, spring decline, and summer minimum. Methyl orange alkalinity varies dircclly with the sum of Ca and Mg and with either of the ions separately. The scatter in the regression of alkalinity versus Mg is greater than that of alkalinity versus Ca. Them is a reduction of per cent organic material in the sediments directly rclatcd to increasing alkalinity. The cause is attributed to greater bacterial activity as Lhe pI1 goes up. These papers are in continuation of studies related to the productivity of some east coast Canadian lakes. The lakes sclectcd exhibit considerable variety of type and geology, as shown by their map locations (Fig. 1). I ‘ ‘ram the work of M. W. Smith the capacity of many of the lakes to support fish is known, providing a standard by which to judge other estimates. The following notes on the lakes will supplcmcnt Figure 1 and Table 1. Lakes 1, 2, and 3 arc located near IIalifax in forbidding granite country. No. 1 is a clearwater primitive, No. 2 an extreme acid bog type, and No. 3 moderately acid bog. Lakes 4, 5, and 6 are near Yarmouth in a quartzite-slate formation, No. 4 being an acid bog type. Their quality indices, based on fish, are respectively 0.20, 0.53, and 0.98, where 1.O would bc average (Hayes 1957). Lakes 7 to 11 are scattered over Nova Scotia. Nos. 7 and 8 arc not far apart in a sandstone-shale conglomerate. The drainage area of No. 8 supports marginal farming, and the lake has a quality index of 0.36. Grand Lake, No. 9, is the largest and 1 Acknowledgement is made of linancial support by the Nova Scotia llcsearch Foundation
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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 | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.002 | 0.006 |
| Science and technology studies | 0.003 | 0.001 |
| Scholarly communication | 0.001 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.002 | 0.000 |
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".