I learned that scientists switched from measuring in lux (the amount of illumination) and started measuring light power only since the 1980's! Today, light power is mostly expressed as PAR, but some authors still seem to refer to the precursor, µE's. (An obvious salute to Einstein.)
Yet another article for those who look at nutrients and algae as something to avoid, eliminate and be worried about.
Hyperparasitism of trichodinid ciliates on monogenean gill flukes of two marine fish A. Colorni*, A. Diamant Dis Aquat Org 65: 177–180, 2005, Published June 30 doi:10.3354/dao065177 Full PDF is available on the Int-Res link above! Under perturbed environmental conditions, specificity between fish hosts and their parasitic fauna often breaks down (Rohde 1982, Thoney & Hargis... Continue Reading →
Let the word AQUARIUM then be the one selected to indicate these interesting collections of aquatic animals and plants, distinguishing it as a Freshwater Aquarium, if contents be fluviatile, or a Marine Aquarium, if it be such as I have made the subject of the present volume. – The Aquarium, Philip Henry Gosse, 1856. The start... Continue Reading →