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Published in Michael Hehenberger, Zhi Xia, Huanming Yang, Our Animal Connection, 2020
Michael Hehenberger, Zhi Xia, Huanming Yang
G got its name from guano, excreta of seabirds from which guanine was first isolated. Guano was used as a source of fertilizers, a property already known to the Incas. It is said that the word guano actually has its roots in the Quechua language, still spoken in Peru. Crystalline guanine has been known for centuries as “pearl essence” and used in the cosmetics industry to provide a shimmering luster. Guanine crystals are rhombic platelets composed of multiple transparent layers. They have a high index of refraction that partially reflects and transmits light from layer to layer, thus producing a pearly luster.
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Published in Michael Hehenberger, Zhi Xia, Our Animal Connection, 2019
G got its name from guano, excreta of seabirds from which guanine was first isolated. Guano was used as a source of fertilizers, a property already known to the Incas. It is said that the word guano actually has its roots in the Quechua language, still spoken in Peru. Crystalline guanine has been known for centuries as “pearl essence” and used in the cosmetics industry to provide a shimmering luster. Guanine crystals are rhombic platelets composed of multiple transparent layers. They have a high index of refraction that partially reflects and transmits light from layer to layer, thus producing a pearly luster.
Wastes and recycle
Published in Howard T. Odum, Elisabeth C. Odum, Mark T. Brown, Environment and Society in Florida, 2018
Howard T. Odum, Elisabeth C. Odum, Mark T. Brown
Simpler agrarian society recycled the wastes of human society back to agriculture; some farms in China still carry human wastes (called night soil) from villages back to the fields. However, our intensive industrial agriculture uses fertilizer from geological deposits such as Florida’s phosphate deposits and bird guano deposits found on some islands in dry climates. Guano is the accumulated waste of animal colonies rich in nitrogen and phosphorus. As Figure 34.1 shows, a closed cycle was replaced with a one-way flow from geological deposits into waste accumulations in our landscape.
Rocky relationships: the petroglyphs of the Murujuga (Burrup Peninsula and Dampier Archipelago) in Western Australia
Published in Australian Journal of Earth Sciences, 2019
E. R. Ramanaidou, L. C. Fonteneau
On the other hand, bird excrement is common on the surface of the weathered gabbro and granophyre of the Murujuga. Guano, an accumulation of bird or bat excrement, is a commercial source of both phosphorus and nitrogen. Guano deposits such as that found in the Australian territory of Christmas Island are mainly used as chemical fertilisers for the agriculture sector. Ornithogenic soils are extremely high in phosphate, nitrate, and ammonium (Wait, Aubrey & Anderson, 2005). The composition of seabird guano mainly includes ammonium oxalate (C2H8N2O4), ammonium urate (C5H7N5O3) and phosphates (NH4)3PO4 and unleached guano typically contains 8 to 16 wt% N, 8 to 12 wt% equivalent phosphoric acid, and 2 to 3 wt% equivalent potash. From the three samples of bird droppings collected from the top of the Murujuga rocks, only one was large enough to calculate nitrogen and carbon with respective values of 1.43 wt% N and 11.9 wt% C. The P2O5 and SO3 from the 3 samples respectively varied from 1.04 to 5.87 wt% and from 0.31 to 3.28 wt%, respectively, showing that the bird droppings are a potential source of phosphorus and sulfur in the leached and surface layers of the Murujuga rocks. Pillans and Fifield (2013) reported crandallite (a calcium phosphate) in the desert varnish of the Murujuga; a similar phosphorus enrichment by wading bird guano soils of the Florida everglades was also described by Irick et al. (2015).
Evaluation of phytotoxic effects of cationic polyacrylamide polymers: implication for the use of sludges as organic soil amendments in assisted phytostabilization
Published in International Journal of Phytoremediation, 2020
Kathia Tabra, Eduardo C. Arellano, Samuel Contreras, Rosanna Ginocchio
Amending the sand with guano had a positive effect on shoot biomass and the emergence of A. sativa. This is because guano provides organic matter, nutrients and beneficial microorganisms for the growth of the plant, improving at the same time the physical, chemical and microbiological characteristics of the substrate (Chiu et al. 2006; Kabas et al. 2012; Zornoza et al. 2012, 2013). However, this positive effect of guano was reversed at high C-PAM doses both in the emergence (1,000 mg L−1, 0.3 g kg−1) and shoot biomass (5,000 mg L−1; 1.5 g kg−1) response variables of A. sativa. The effect of C-PAM containing substrate on root development directly impacted emergence and biomass of A. sativa.
A green approach for the reduction of representative aryl functional groups using palladium ecocatalysts
Published in Green Chemistry Letters and Reviews, 2021
Claude Grison, Pauline Adler, Pierre-Alexandre Deyris, Sebastien Diliberto, Clotilde Boulanger
Eichhornia crassipes were purchased from a specialized grower (Nymphea company, France). The plants were placed in an outdoor tank under greenhouse filled with water to which guano was added as fertilizer.Mentha aquatica was purchased from a specialized grower (Nymphea company, France) that used hydroponics in order to maximize the roots of the plants.Pistia stratiotes was either purchased from a specialized grower (Nymphea company, France) or directly collected by CNR (Compagnie Nationale du Rhône) from the Rhône river and Gardon river near the city of Comps (Gard, France).Ludwigia peploides was collected by CNR (Compagnie Nationale du Rhône) from the Sèze river and Rhône river near the city of Bagnols-sur-Cèze (Gard, France).Reynoutria japonica was collected by ETPB Gardons either from the Gardon d’Alès river near the city of La Grand-Combe (Gard, France), or by the Mixt Union Ganges le Vigan from the Hérault river near the city of Le Vigan (Gard, France).Bark pine and pinecone were collected in the region of Montpellier (Hérault, France) in fall 2018 and are from the species of black pine (Pinus nigra).Coffee grounds were obtained directly from our laboratory.