Although the book cover gives the title as Twenty Thousand Leagues Under the Sea, the title page titles the book Twenty Thousand Leagues Under the Seas; Or, The Marvelous and Exciting Adventures of Pierre Arronax, Conseil His Servant, and Ned Land a Canadian Harpooner.
A man-made pond made with a pond liner has no soil â so one source of micro-organisms is missing, especially if you keep cleaning the pond liner. Most ponds have few stones and few plants reducing the number of micro-organisms even further.he use of the word ânaturalâ here refers to the pond filtration system, not the esthetic look of the pond. Iâll deal with esthetics in a future post on how to build ponds. In a natural pond the water, soil, plants, and animals all live in harmony. No one comes along to clean the pond or to aerate it.
However, the plant growth becomes a nuisance when the intended use of the pond is swimming. Dug ponds have several characteristics that make them susceptible to unwanted plant growth: â¢ Sha llow depth, allowing sunlight to penetrate to the bottom, supporting photosynthesis throughout the pond. dug pond, also called a farm pond, is a small shallow pond created artificially by digging a depression in the land. Once dug, the depression is filled primarily by groundwater, receiving surface water only from snowmelt and during storm events.