. The ecology and life history of the common frog (Rana temporaria temporaria) . 100 200 300 RAINFALL IN M ILLI METRES Fig. 36. Joint Functional Regression Diagram, Showing the Relation between Rainfall and Temperature and Spawn Date for the month Mi Note: (i) a trough of earliness at about o°C, (2) a ridge of lateness at about 3''-4°C, (3) signs of another ridge of lateness above 7°C, (4) the latest dates occur at opposite ends of the diagram, when it is either very cold or very hot for the time of the year. temperature of — 2*5°C has been recorded, but here is to be found the immense advanta
. The ecology and life history of the common frog (Rana temporaria temporaria) . 100 200 300 RAINFALL IN M ILLI METRES Fig. 36. Joint Functional Regression Diagram, Showing the Relation between Rainfall and Temperature and Spawn Date for the month Mi Note: (i) a trough of earliness at about o°C, (2) a ridge of lateness at about 3''-4°C, (3) signs of another ridge of lateness above 7°C, (4) the latest dates occur at opposite ends of the diagram, when it is either very cold or very hot for the time of the year. temperature of — 2*5°C has been recorded, but here is to be found the immense advantage of working with a large scheme such as tliis. The data for these low temperatures come from very cold winters in parts of the country that have cold climates anyway, and a single observer has no chance of collecting observations such as these, as well as the other extremes that are needed for a complete survey. Passing now to slightly warmer conditions, we reach the freezing point, o°C, and here encounter what was perhaps the most dramatic event in the whole investigation. (It would be quite wrong to suppose
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Keywords: ., bookcentury1900, bookcollectionbiodiv, booksubjectranatemporaria
