. Bulletin of the British Museum (Natural History). EARTHWORMS FROM GAMBIA 5 at the sides of fields where weeds and the unwanted tops of ground crops had been discarded, or, near to water. In these situations earthworms were often present in large numbers. ECOLOGY: CLIMATE AND SOIL The two main collecting areas are similar in consisting of lightly wooded grassland with scattered villages surrounded by cultivated land. In the coastal region, how- ever, the climate is slightly more humid and the temperature a little lower than inland. The soils of the two areas also differ slightly although in b
. Bulletin of the British Museum (Natural History). EARTHWORMS FROM GAMBIA 5 at the sides of fields where weeds and the unwanted tops of ground crops had been discarded, or, near to water. In these situations earthworms were often present in large numbers. ECOLOGY: CLIMATE AND SOIL The two main collecting areas are similar in consisting of lightly wooded grassland with scattered villages surrounded by cultivated land. In the coastal region, how- ever, the climate is slightly more humid and the temperature a little lower than inland. The soils of the two areas also differ slightly although in both locaUties they are essentially sandy Fig. I. Climate of the basin of the R. Gambia. Temperature (Fahrenheit), Broken line: average highest temperature each month, ; Contimwiis line: average daily temperature, ; Humidity, Dotted line: relative humidity, , daily average at hrs.; , daily average at Ivrs. Rainfall (Inches) Average monthly precipitation. Horizontal lines: (average total annual rainfall 39-5 inches); vertical lines: (average annual rainfall 51-0 inches). The only meteorological station in Gambia is situated at Yundum in the coastal region but meteorological information of inland areas can be obtained from data collected at Tambacounda in Senegal, near to the eastern extremity of Gambia. The meteorological data available (Meteorological Office, London, 1958) were obtained by standard apparatus so the temperature and humidities at ground level, or indeed the soil itself, which influence earthworm ecology and behaviour, are unknown. Nevertheless, the data recorded (Text-fig. i) provide a useful guide to the general. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the o
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Keywords: ., 1968, boo, bookauthorbritishmuseumnaturalhistory, bookcentury1900
