4,000 years later, ancient Maya civilization may solve the world’s water crisis


CHICAGO — At present’s governments would possibly have the ability to draw inspiration from the traditional Maya in relation to addressing water remedy challenges within the age of worldwide warming, a brand new examine explains. The water purification strategies practiced by the Mesoamerican civilization — relationship again so far as 4,000 years in the past — supply a cheap and sustainable different to trendy water remedy methods, researchers argue.

The Maya had been pioneers in creating methodologies to purify, filter, and retailer water. They constructed reservoirs that had been naturally cleansed by aquatic crops and particular sands. Researchers now suggest that merging up to date information with the insights of the traditional Maya may result in economical and environment friendly water remedy options.

The Mayan civilization has had a steady presence in present-day nations of Mexico, Guatemala, and Honduras for no less than 3,800 years. They had been groundbreaking of their growth of positional numerals, together with the concept of zero. Moreover, Mesoamerica was one of many few areas globally to originate writing. The Maya deciphered time intricacies by way of their complete Lengthy Depend calendar, showcasing their superior arithmetic skills.

Innovatively, they adopted intense farming in swamps, using a technique referred to as “raised fields.” This concerned creating canal and ditch networks to handle water throughout each the wet and annual five-month dry seasons.

The Maya constructed and maintained reservoirs that equipped potable water for over a millennium. These reservoirs catered to the huge populations of their magnificent cities. This subtle civilization developed infrastructure similar to canals, dams, sluices, and berms to handle water successfully.

Lidar map of Tikal highlighting some of its reservoirs.
Lidar map of Tikal highlighting a few of its reservoirs. (Picture tailored Tankersley et al. 2020). Lidar-derived hillshade picture created by Francisco Estrada-Belli of the PAQUNAM LiDAR Initiative. Used with permission. Graphic modified by Bryan Lin.

They utilized quartz sand, generally sourced from distant areas, to filter water in sprawling cities like Tikal, a outstanding Mayan metropolis in the course of the Late Basic Interval (600-900 AD) positioned in present-day northern Guatemala.

An evaluation of sediment cores from a Tikal reservoir revealed using zeolite sand, a volcanic variant identified for its capability to filter contaminants and dangerous microbes. This sand was imported from areas roughly 18 miles away.

The researchers be aware that Tikal’s reservoirs may retailer over 900,000 cubic meters of water. This reservoir sustained the town’s estimated 80,000 inhabitants and their crops throughout dry spells.

“Most main southern lowland Maya cities emerged in areas that lacked floor water however had nice agricultural soils,” says the examine’s lead writer Lisa Lucero, an anthropology professor on the College of Illinois in Chicago, in a media release. “They compensated by establishing reservoir methods that began small and grew in dimension and complexity.”

Mayan monarchs derived a lot of their status from their capability to make sure water provide and bountiful harvests, usually performing rituals to appease the rain deity, Chahk. The scientists spotlight the shut connection between clear water entry and political authority, noting that essentially the most in depth reservoirs had been strategically positioned close to palatial and sacred websites.

One problem confronted by rulers was preserving reservoir water contemporary. To handle this, the Maya seemingly harnessed the filtering capabilities of aquatic plants native to Central American wetlands, together with cattails, sedges, and reeds. A few of these crops have been recognized in sediment cores from Maya reservoirs.

Maya vessel from Guatemala depicting a king sitting on a throne
Maya vessel (c. 700-800 CE) from Guatemala depicting a king sitting on a throne sporting a water lily headdress. Water lilies (Nymphaea ampla) on reservoir surfaces indicated clear water and symbolized Basic Maya kingship (c. 250-900 CE). Courtesy the Boston Museum of Effective Arts (www.mfa.org).

In accordance with Prof. Lucero, these crops successfully clarified the water, lowering murkiness whereas absorbing contaminants. The reservoirs would bear common upkeep, changing outdated crops with new ones, and the harvested nutrient-rich crops and soil could be repurposed as fertilizers.

The water lily, symbolic of purity and Maya royalty, was a staple in these reservoirs. Pollen traces of this plant have been found in sediment cores from numerous reservoirs. To help water lilies, reservoirs had been lined with clay, facilitating root progress. Furthermore, surrounding timber and shrubs shaded the water, cooling it and stopping algae proliferation.

“The kings even donned headdresses adorned with the flowers and are depicted with water lilies in Maya artwork,” notes Prof. Lucero.

Proof from numerous cities means that these reservoirs persistently equipped clear water to hundreds for over a millennium, solely failing throughout extreme droughts between 800 and 900 AD.

The analysis group believes that as our planet grapples with changing climate patterns, we must always think about adopting the aquatic plant-based methods utilized by the traditional Maya. This strategy not solely ensures clear water but in addition helps aquatic life and replenishes soil vitamins.

“Constructed wetlands present many benefits over standard wastewater remedy methods,” Prof. Lucero acknowledged. “They supply a cheap, low know-how, inexpensive and excessive energy-saving remedy know-how. The subsequent step transferring ahead is to mix our respective experience and implement the teachings embodied in historic Maya reservoirs at the side of what’s presently identified about constructed wetlands.”

The examine is printed within the journal Proceedings of the National Academy of Sciences.

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South West Information Service author James Gamble contributed to this report.

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