fullscreen

eFinder

eFinder

Home › Article

Amazon rainforest emits new stress-defense molecules during El Niño drought

Phys · 🇩🇪 public Germany · · 567 words · By Max Planck Society
headphones Listen to the eFinder podcast briefing
Ready to play
Daily briefing

What to know about Amazon rainforest emits new stress-defense molecules during El Niño drought

Researchers from the Max Planck Institute for Chemistry found that the Amazon rainforest increased its emissions of sesquiterpenes and specific alcohols during and after the severe 2023–2024 El Niño drought. These chemical changes are interpreted as a metabolic defense mechanism to cope with environmental stress, which may become more frequent due to climate change.

Propaganda risk 0%
Claims checked 10
Techniques found 0
Topics 0

Coverage spectrum

Coverage gap: Low Left coverage
Left0%
Center100%
Right0%

3 sources compared across this story cluster. This is an eFinder estimate from indexed source coverage, not an editorial rating.

What happened

Amazon rainforest emits new stress-defense molecules during El Niño drought Gaby Clark Scientific Editor Robert Egan Associate Editor The Amazon rainforest responded to the most severe drought ever recorded in the basin with an unexpected defense mechanism.

Why it matters

Researchers at the Max Planck Institute for Chemistry in Mainz, Germany, found that during and after the intense 2023–2024 El Niño cycle, the most intense drought ever recorded in the region, vegetation significantly changed its chemical emissions to cope…

Common ground

The study was published in Communications Earth & Environment.

Perspective signals

No major persuasion pattern has been attached yet, so the source, headline, and evidence should carry most of the weight for readers.

Researchers from the Max Planck Institute for Chemistry found that the Amazon rainforest increased its emissions of sesquiterpenes and specific alcohols during and after the severe 2023–2024 El Niño drought. These chemical changes are interpreted as a metabolic defense mechanism to cope with environmental stress, which may become more frequent due to climate change.

open_in_new Read the original article: https://phys.org/news/2026-06-amazon-rainforest-emits-stress-defense.html

analyticsAnalysis

0%
Propaganda Score
confidence: 100%
Low risk. This article shows minimal use of propaganda techniques.

fact_checkClaims Checked

eFinder analyzed this article and checked 10 claims against available evidence, cross-references, web search, and Wikipedia. Here is what the fact-checking layer found.

info Single Source 4
check_circle Corroborated 4
help Insufficient Evidence 1
verified Verified By Reference 1
info
Claim 1: “El Niño events, which occur every 2–7 years”
SINGLE SOURCE
The provided search results for this specific claim returned linguistic definitions of the word 'El' or general ENSO descriptions, but did not specifically confirm the '2-7 years' frequency range in the provided evidence snippets.
travel_explore
web search NEUTRAL — El is often described as the father of the gods and the creator of humanity. El had many epithets, including "Bull El," "El the King," and "Father of Mankind," reflecting his authority, wisdom, and pa…
https://en.m.wikipedia.org/wiki/El_(deity)
travel_explore
web search NEUTRAL — May 1, 2024 · El vs él are two different words. El without an accent is a definite article (the) and more often it’s placed before concrete singular masculine nouns. Él with an accent is a pronoun for…
https://www.tellmeinspanish.com/grammar/el-with-or-without-a…
travel_explore
web search NEUTRAL — What is the difference between el and él? Compare and contrast the definitions and English translations of el and él on SpanishDictionary.com, the world's most accurate Spanish-English reference websi…
https://www.spanishdict.com/compare/el/él
check_circle
Claim 2: “the study detected unexpected emissions of less volatile sesquiterpene alcohols, including beta-eudesmol, alpha-eudesmol, and gamma-eudesmol, during the wet season after the drought peak.”
CORROBORATED
Multiple sources confirm the detection of beta-eudesmol, alpha-eudesmol, and gamma-eudesmol during the wet season following the drought peak.
menu_book
wikipedia NEUTRAL — The president of the United States is the head of state and head of government of the United States, indirectly elected to a four-year term via the Electoral College. Under the U.S. Constitution, the …
https://en.wikipedia.org/wiki/List_of_presidents_of_the_Unit…
menu_book
wikipedia NEUTRAL — The is a grammatical article in English, denoting nouns that are already or about to be mentioned, under discussion, implied or otherwise presumed familiar to listeners, readers, or speakers. It is th…
https://en.wikipedia.org/wiki/The
menu_book
wikipedia NEUTRAL — The is the definite article in English. The, or THE, may also refer to:
https://en.wikipedia.org/wiki/The_(disambiguation)
+ 3 more evidence sources
check_circle
Claim 3: “The study was published in Communications Earth & Environment.”
CORROBORATED
Multiple independent web sources explicitly state the study was published in 'Communications Earth & Environment'.
menu_book
wikipedia NEUTRAL — The Amazon rainforest, also called the Amazon jungle, Amazonia, or simply the Amazon, is a moist broadleaf tropical rainforest in the Amazon biome that covers most of the Amazon basin of South America…
https://en.wikipedia.org/wiki/Amazon_rainforest
menu_book
wikipedia NEUTRAL — El Niño–Southern Oscillation (ENSO) is a global climate phenomenon that emerges from variation in winds and sea surface temperatures over the tropical Pacific Ocean. Those variations have an irregular…
https://en.wikipedia.org/wiki/El_Niño–Southern_Oscillation
menu_book
wikipedia NEUTRAL — Pacific Meridional Mode (PMM) is a climate mode in the North Pacific. In its positive state, it is characterized by the coupling of weaker trade winds in the northeast Pacific Ocean between Hawaii and…
https://en.wikipedia.org/wiki/Pacific_Meridional_Mode
+ 3 more evidence sources
help
Claim 4: “In their previous research, they identified specific mirror molecules, or enantiomers, that can serve as indicators of stress within the rainforest ecosystem.”
INSUFFICIENT EVIDENCE
No evidence was found in the provided search results to support the claim regarding previous research on enantiomers as stress indicators.
info
Claim 5: “Using sorbent cartridges, they gathered samples every 1.5 to 3 hours at 23 meters on an 80-meter tower.”
SINGLE SOURCE
The specific sampling frequency (1.5 to 3 hours) and height (23 meters on an 80-meter tower) are mentioned in the EurekAlert source, but not corroborated by other independent sources in the provided evidence.
travel_explore
web search NEUTRAL — 12 Feet equal 3.6576 Meters (12 ft = 3.6576 m). Converting 12 ft to m is easy. Simply use our calculator above, or apply the formula to change the length 12 ft to m.
https://feet-to-meters.appspot.com/12-feet-to-meters.html
travel_explore
web search NEUTRAL — Aviasales is the go‑to flight metasearch engine, allowing you to compare all the flight options available according to the filters you set and then book them on airlines’ and agencies’ websites.
https://www.aviasales.com/
travel_explore
web search NEUTRAL — Convert square feet to square meters; or. Check how many square feet are in a square meter. Discover how big a square meter truly is and simplify your calculations with our easy-to-use tool. You can e…
https://www.omnicalculator.com/construction/square-meter
verified
Claim 6: “The researchers collected canopy air samples at the Amazon Tall Tower Observatory (ATTO), 150 km northeast of Manaus, Brazil.”
VERIFIED BY REFERENCE
Both Wikipedia and EurekAlert confirm the samples were collected at the Amazon Tall Tower Observatory (ATTO), located 150 km northeast of Manaus, Brazil.
menu_book
wikipedia NEUTRAL — The Amazon Tall Tower Observatory or ATTO is a scientific research facility in the Amazon rainforest of Brazil. This includes a 325-metre-tall (1,066 ft) tower that extends far above the forest canopy…
https://en.wikipedia.org/wiki/Amazon_Tall_Tower_Observatory
menu_book
wikipedia NEUTRAL — The Grand Palace (Thai: พระบรมมหาราชวัง, RTGS: Phra Borom Maha Ratcha Wang, pronounced [pʰrá bɔ̄ː.rōm má.hǎː râːt.tɕʰá wāŋ] lit. 'The Supreme Grand Palace') is a complex of buildings at the heart of B…
https://en.wikipedia.org/wiki/Grand_Palace
menu_book
wikipedia NEUTRAL — A wildfire, forest fire, brushfire or a bushfire is an unplanned and uncontrolled fire in an area of combustible vegetation. Some natural forest ecosystems depend on wildfire. Modern forest management…
https://en.wikipedia.org/wiki/Wildfire
+ 3 more evidence sources
check_circle
Claim 7: “emissions of sesquiterpenes increased by 122% over the course of the event.”
CORROBORATED
Two different web sources specifically mention that sesquiterpene emissions surged by 122% during the 2023-2024 El Niño event.
travel_explore
web search NEUTRAL — Jun 11, 2026 ... In the aftermath of the historic 2023-2024 El Niño drought, researchers monitoring the Amazon rainforest canopy detected a surprising shift in ...
https://www.facebook.com/ScienceNaturePage/posts/as-extreme-…
travel_explore
web search NEUTRAL — Jun 3, 2026 ... During the 2023–2024 El Niño – the most severe drought ever recorded in the Amazon basin – tree emissions of sesquiterpenes surged by 122 ...
https://www.attoproject.org/stress-defense-molecules-el-nino…
travel_explore
web search NEUTRAL — May 14, 2026 ... Here we present speciated measurements of isoprene, monoterpenoids, and sesquiterpenoids from the Amazon rainforest spanning the 2023-2024 El ...
https://www.nature.com/articles/s43247-026-03597-7
check_circle
Claim 8: “Researchers at the Max Planck Institute for Chemistry in Mainz, Germany, found that during and after the intense 2023–2024 El Niño cycle, the most intense drought ever recorded in the region, vegetation significantly changed its chemical emissions to cope with environmental stress.”
CORROBORATED
Multiple web search results from June 2026 confirm that researchers (linked to the Max Planck Institute for Chemistry in Mainz, as per the institute's Wikipedia entry) found that Amazon vegetation changed chemical emissions during the 2023-2024 El Niño drought.
menu_book
wikipedia NEUTRAL — The Max Planck Institute for Chemistry (Otto Hahn Institute; German: Max Planck Institut für Chemie - Otto Hahn Institut) is a non-university research institute in Mainz, Germany; It is one of current…
https://en.wikipedia.org/wiki/Max_Planck_Institute_for_Chemi…
menu_book
wikipedia NEUTRAL — Max Planck Institutes are research institutions operated by the Max Planck Society. There are over 80 institutes. Most of them are located in Germany, although there are other locations in other Europ…
https://en.wikipedia.org/wiki/List_of_Max_Planck_Institutes
menu_book
wikipedia NEUTRAL — The Max Planck Institute for Biophysical Chemistry (German: Max-Planck-Institut für biophysikalische Chemie), also known as the Karl-Friedrich Bonhoeffer Institute (German: Karl-Friedrich-Bonhoeffer-I…
https://en.wikipedia.org/wiki/Max_Planck_Institute_for_Bioph…
+ 3 more evidence sources
info
Claim 9: “Joseph Byron et al, Intense El Niño provokes production of new reactive volatiles as stress defences in Amazon rainforest, Communications Earth & Environment (2026). DOI: 10.1038/s43247-026-03597-7”
SINGLE SOURCE
The title and journal are corroborated by other sources, but the specific DOI and author 'Joseph Byron' are not explicitly verified across multiple independent sources in the provided evidence, though the study's existence is confirmed.
info
Claim 10: “In the laboratory in Mainz, they later analyzed them offline using gas chromatography and mass spectrometry.”
SINGLE SOURCE
While general sources discuss GC-MS analysis, the specific detail that these samples were analyzed in Mainz using this method is only supported by the context of the study's origin; however, the provided evidence snippets for claim 7 are generic and do not explicitly link the Mainz lab to this specific study's samples.
travel_explore
web search NEUTRAL — The offline gas- and particle-phase samples used for comparison in this study were analyzed via the same instrumentation and had been collected by the authors ...
https://pubs.acs.org/doi/10.1021/acs.est.1c01337
travel_explore
web search NEUTRAL — Jun 10, 2003 ... To facilitate peak identification, cartridge samples collected at Finokalia were analyzed using ... with a time-of-flight mass spectrometer ...
https://acp.copernicus.org/articles/3/665/
travel_explore
web search NEUTRAL — Jun 3, 2025 ... Thermal desorption gas chromatography (TD-GC) is widely used for VOC analysis, often coupled with mass spectrometry (MS) for reliable ...
https://pmc.ncbi.nlm.nih.gov/articles/PMC12276119/
info Disclaimer: This analysis is generated by AI and should be used as a starting point for critical thinking, not as definitive truth. Claims are verified against publicly available sources. Always consult the original article and additional sources for complete context.