The Chincha guano islands in Peru, from The Illustrated London News (21 February 1863)

The nest of the Peruvian Booby is made of guano.

Guano (via Spanish, ultimately from the Quechua wanu, meaning 'dung') is the excrement (feces and urine) of seabirds, cave dwelling bats, and seals. Guano manure is an effective fertilizer due to its high levels of phosphorus and nitrogen and also its lack of odor. It was an important source of nitrates for gunpowder. Soil that is deficient in organic matter can be made more productive by addition of this manure.

Composition[link]

Guano consists of ammonium oxalate and urate, phosphates, as well as some earth salts and impurities. Guano also has a high concentration of nitrates. Bird guano has a fertilizer analysis of 11 to 16 percent nitrogen, 8 to 12 percent equivalent phosphoric acid, and 2 to 3 percent equivalent potash.^[1] Bat and seal guano are lower in fertilizer value than bird guano.

History[link]

Mining guano in the Central Chincha Islands off the southwest coast of Peru, ca 1860.

The word "guano" originates from the Quichua language of the Andes and means "the droppings of sea birds". Andean peoples collected guano from the coast of Peru for use as soil enricher. The rulers of the Inca Empire assigned great value to guano, restricting access to it and punishing any disturbance to the birds with death.^[2]

Guano has been harvested over several centuries along the coast of Peru, where islands and rocky shores have been sheltered from humans and predators. The Guanay Cormorant has historically been the most important producer of guano; its guano is richer in nitrogen than guano from other seabirds. Other important guano producing species off the coast of Peru are the Peruvian Pelican and the Peruvian Booby.^{[citation needed]}

Advertisement for guano, 1884

In November 1802, Alexander von Humboldt studied guano and its fertilizing properties at Callao in Peru, and his subsequent writings on this topic made the subject known in Europe.

The high concentration of nitrates also made guano an important strategic commodity. The discovery during the 1840s of the use of guano as a fertilizer and its Chile saltpetre content as a key ingredient in explosives made the area strategically valuable.^{[citation needed]}

In this context the US passed the Guano Islands Act in 1856 giving citizens discovering a source of guano the right to take possession of unclaimed land and entitlement to exclusive rights to the deposits. However, the guano could only be removed for the use of citizens of the United States.^[2] This enabled US citizens to take possession of unoccupied islands containing guano.^{[citation needed]}

Control over guano played an important role in the Chincha Islands War (1864-1866) between Spain and a Peruvian-Chilean alliance since Spain occupied with its navy the Chincha Islands depriving Peru of lucrative income.

In the second half of the 19th century guano extraction was eclipsed by salpeter in the form of caliche extraction from the interior of Atacama Desert, not far from the guano areas. After the War of the Pacific (1879-1883) Chile seized much of the guano as well as salpeter producing area making its national treasury grow by 900% between 1879 and 1902 due to taxes coming from the newly acquired lands.^[3]

The importance of guano deposits faded after 1909 when Fritz Haber developed the Haber-Bosch process of industrial nitrogen fixation (nitrogen gas from the air converted into liquid ammonia fertilizer). The Haber process is important today because the fertilizer generated from ammonia is responsible for sustaining one-third of the Earth's population.^[4] It is estimated that half of the protein within human beings is made of nitrogen that was originally fixed by this process, the remainder was produced by nitrogen fixing bacteria and archaea.^[5]

Sourcing[link]

A Herring Gull (Larus argentatus) jettisoning waste near Île-de-Bréhat.

The ideal type of guano is found in exceptionally dry climates, as rainwater drains the guano of nitrates. Guano is harvested on various islands in the Pacific Ocean (for example, the Chincha Islands) and in other oceans (for example, Juan de Nova Island and Christmas Island). These islands have been home to mass seabird colonies for many centuries, and the guano has collected to a depth of many metres. In the 19th century, Peru was famous for its supply of guano.

Bat guano is usually mined in caves and this mining is associated with a corresponding loss of troglobytic biota and diminishing of biodiversity. Guano deposits support a great variety of cave-adapted invertebrate species, which rely on bat feces as their sole nutrient input. In addition to the biological component, deep guano deposits contain local paleoclimatic records in strata that have built up over thousands of years, which are unrecoverable once disturbed.

The greatest damage caused by mining to caves with extant guano deposits is to the bat colonies themselves. Bats are highly vulnerable to regular disturbance to their roosts. Some species, such as Phyllonycteris aphylla, have low fat reserves, and will starve to death when regularly disturbed and put into a panic state during their resting period. Many species will drop pups when in panic, with subsequent death, leading to a steady reduction in population. Research in Jamaica has shown that mining for bat guano is directly related to the loss of bat species, associated invertebrates and fungi, and is the greatest threat to bat caves on the island. ^[6]

Properties[link]

In agriculture and gardening guano has a number of uses, including as: soil builder, lawn treatments, fungicide (when fed to plants through the leaves), nematicide (decomposing microbes help control nematodes), and as composting activator (nutrients and microbes speed up decomposition).^[2]

See also[link]

• Guano Islands Act
• Phosphate mining in Nauru
• Histoplasmosis
• Phosphorite
• Bat Cave mine

References[link]

External links[link]

Wikimedia Commons has media related to: Guano

• ProAbonos
• Jamaican Bat Guano and Cave Preservation

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Ace Ventura is a fictional character, created by screenwriters Jack Bernstein, Tom Shadyac and Steve Oedekerk. Ace was played by Jim Carrey in the films (Ace Ventura: Pet Detective, released in 1994, and Ace Ventura: When Nature Calls, released in 1995.) He was voiced by Michael Daingerfield (credited as Michael Hall) in the animated television series.

Biography[link]

Ace is a Miami-based private detective specializing in the retrieval of missing animals, said to be the son of Ron Ventura and descendant of such as "Ernest Ventura Shackleton" and "Jacques Ventura Costeau". It is not known whether the animated television series was contiguous with the feature-films; but if it was it may take place before them because the only one of his pets to appear in the series is his capuchin monkey, Spike. During the second film, Ace attempts monasticism after a failed rescue attempt of a raccoon; only to be called out of retirement to investigate a missing sacred animal. By the events portrayed in Ace Ventura, Jr. it is established that Ace has disappeared somewhere in the Bermuda Triangle, and never appears in the film itself.^[1]

Development[link]

This section requires expansion.

Bernstein had wanted to do a comedic version of Sherlock Holmes, and when watching the Stupid Pet Tricks segment on Late Night With David Letterman, got the idea for a pet detective.^{[citation needed]}

Personality[link]

Ace Ventura is an eccentric self-styled 'pet detective' who forsook regular police work to concentrate on this latter pursuit. Like other fictional detectives, he is notable for extraordinary powers of observation and deduction; and on at least one occasion, he has managed to escape being shot by catching a bullet in his teeth.

Ventura's eccentricities include his persistent vulgarity and exceedingly flamboyant behaviour; but he is nevertheless a dedicated detective, driven by an insatiable adoration of animals and a desire to protect them from human mistreatment. In Ace Ventura Jr: Pet Detective, it is implied that his abilities, personality, and appearance are hereditary. Although Ace is an animal lover, the second film reveals a deep-seated chiroptophobia.

In most appearances, Ace usually wears an unbuttoned Aloha shirt over a plain white A-shirt, with red and black striped trousers and black combat boots. He lives in an apartment alongside many different animals, all of whom hide from his landlord, Mr. Schickadance, in his absence.

[edit] Appearance in The Mask: The Animated Series

In the episodes "The Aceman Cometh/Have Mask, Will Travel" of The Mask: The animated series, when Milo, the pet dog of Stanley Ipkiss, was stolen by Dr. Pretorius, Ipkiss calls Ace for help. Both Ipkiss/the Mask and Ace Ventura were the animated versions of characters portrayed by Jim Carrey himself. Ace later accidentally wears the mask on his rump, which assumes a face similar to his own and gains the ability to speak, suggesting a joke featured in the original film of speaking while presenting his rump to the listener and moving it in semblance of a speaking mouth.

Reception[link]

Ace was ranked the 60th Greatest Movie Character in a November, 2008 list by Empire Magazine.^[2] Cyborg Franky from Japanese anime and manga One Piece is based on the character.^{[citation needed]}

See also[link]

• Ace Ventura: Pet Detective
• Ace Ventura: When Nature Calls

External links[link]

• Ace Ventura: Pet Detective at the Internet Movie Database
• Ace Ventura: When Nature Calls at the Internet Movie Database
• Ace Ventura Jr: Pet Detective at the Internet Movie Database

References[link]