Anthropogenic pollution


Chemical pollution:

Persistent Organic Pollutants (POPs) : very limited amounts in  

snow and water, but a lot of dioxins in the air of the region

due to extensive use of firewood burning for different purposes.

Quite possible Persistent Organic Pollutants in fish in the rivers.


Probable presence of oxybenzone and octinoxate : extensive

use of sunscreens due to ozone hole over Patagonia.


Probable presence of plastic micro-particles in the rivers due

to the move to biodegradable and oxo-degradable bags in the region.

Micro-plastic found in the lake by a scientific project:

www.adventurescientists.org/microplastics.html

Les microplastiques envahissent nos sols.pdf


Certain oil pollution in lake Leones from

two-stroke engines on boats.


Chemical pollution of water and nano-particles

pollution due to washing of technical clothes for

“adventure” and “bad weather” tourism.


Pollution of soil by glyphosate, killing its microbiota-

used to control invasive plant species.

Glyphosate is really bad for earth worms.

Comment se passer du glyphosate.pdf


“Science et vie”, June 2017: Real microbial disturbances are induced in soils by colossal amounts of antibiotics that are consumed (and rejected) by livestock. Some bacteria increase their numbers by 70%, others disappear. As to fungi, in principle insensitive to antibiotics, they undergo strong modifications.


Proven and serious heavy metals pollution of soil and water in the region from old mines, such as the mine La Escondida. This lead and copper mine operated for short periods from 1954 to 1986 near Puerto Guadal, the last 2 years in the hands of Corfo (Production Development Corporation). Cows are still dying when grazing around. Mine operations also depleted the water table.

Heavy metals pollution of soil and water around Puerto Guadal (Spanish)

Pollution in the General Carrera lake basin (Spanish)


Pollution of soil by chemicals from antiparasites and antibiotics used in horses and mainly cows, severely  altering the microbiota of the soil, including large microbiota, like worms and mushrooms. Alteration of microbiota: some bacteria can increase up to 70%, some bacteria disappear completely; mushrooms, which are usually insensitive to antibiotics, are subject to strong changes.


Pollution by neonicotinoids (in the region: used on cherry trees mainly), causing decline of pollinators such as bees, wild insects, bats. Presence of nerve agents in honey.

Study: Neonicotinoids in honey.pdf

Study: nerve agents in honey.pdf


Tourism-related pollution: air pollution and noise, solid waste and littering, sewage, aesthetic pollution.

Didimo (Didymosphenia geminata) in rivers. Tourism brings pathogens and highly virulent wildlife diseases which decimate local wildlife: Amphibians worldwide threatened by deadly fungus.pdf


Light pollution, kills a lot of birds, insects, marine life worldwide - very limited within the project.


Introduced and invasive species.


Externally generated pollution: antibiotics in salmon , Chile goes to environmental justice for the escape of 690,000 salmon: Chile acude a la justicia ambiental por el escape de 690.000 salmones.pdf 


Regional urban management:


Coyhaique, the regional capital, is the most polluted city in Americas.


Absence of waste management policy in the region:


Rubbish dump in Puerto Guadal, →

close to the lake, one of several around

the lake General Carrera

Anthropogenic pollution

01.2018 - October 2019

synthetic fish
micro plastic pollution of lake Carrera
Rubbish dump Guadal
Light pollution Patagonia

Very limited light pollution of the area