1926 | Peridinium, |
1927 | Prymnesium |
1928 | Gomphosphaeria, |
1929 | Porphyridium, |
1930 | Uroglena volvox |
1931 | Herbarium Image: Mimulus luteus |
1932 | Herbarium Image: Nitella opaca |
1933 | Herbarium Image: Nitella opaca |
1934 | Herbarium Image: Potamogeton perfoliatus |
1935 | Herbarium Image: Oenanthe fluviatilis |
1936 | Nostoc, |
1937 | Herbarium Image: Potamogeton crispus |
1938 | Trentepohlia, |
1939 | Herbarium Image: Potamogeton gramineus |
1940 | Prymnesium |
1941 | Soil moisture data: AC0101, Nottinghamshire, 2008 |
1942 | River Piddle P2 Spring 2008 |
1943 | Melosira, |
1944 | Scenedesmus, |
1945 | Rhodochorton (Audouinella), |
1946 | Herbarium Image: Alisma plantago-aquatica |
1947 | Gomphosphaeria, |
1948 | Syngenta Pond Invertebrate Data (2004) |
1949 | Gomphosphaeria, |
1950 | Analogue (nutrient), YSI, turbidity and stage data for the Wensum Demontration Test Catchment's monitoring kiosk E in 2014 |