Pratique du Shadowing: The secret language of trees - Camille Defrenne and Suzanne Simard - Apprendre l'anglais à l'oral avec YouTube

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Most of the forest lives in the shadow of the giants that make up the highest canopy.
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Most of the forest lives in the shadow of the giants that make up the highest canopy.
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These are the oldest trees, with hundreds of children and thousands of grandchildren.
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They check in with their neighbors, sharing food, supplies, and wisdom gained over their long lives.
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They do all this rooted in place, unable to speak, reach out, or move around.
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The secret to their success lies under the forest floor, where vast root systems support the towering trunks above.
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Partnering with these roots are symbiotic fungi called mycorrhizae.
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These fungi have countless branching, thread-like hyphae that together make up the mycelium.
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The mycelium spreads across a much larger area than the tree root system and connect the roots of different trees together.
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These connections form mycorrhizal networks.
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Through mycorrhizal networks, fungi can pass resources and signaling molecules between trees.
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We know the oldest trees have the largest mycorrhizal networks with the most connections to other trees, but these connections are incredibly complicated to trace.
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That’s because there are about a hundred species of mycorrhizal fungi– and an individual tree might be colonized by dozens of different fungal organisms, each of which connects to a unique set of other trees, which in turn each have their own unique set of fungal associations.
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To get a sense of how substances flow through this network, let’s zoom in on sugars, as they travel from a mature tree to a neighboring seedling.
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Sugar’s journey starts high above the ground, in the leaves of the tallest trees above the canopy.
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The leaves use the ample sunlight up there to create sugars through photosynthesis.
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This essential fuel then travels through the tree to the base of the trunk in the thick sap.
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From there, sugar flows down to the roots.
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Mycorrhizal fungi encounter the tips of the roots and either surround or penetrate the outer root cells, depending on the type of fungi.
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Fungi cannot produce sugars, though they need them for fuel just like trees do.
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They can, however, collect nutrients from the soil much more efficiently than tree roots— and pass these nutrients into the tree roots.
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In general, substances flow from where they are more abundant to where they are less abundant, or from source to sink.
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That means that the sugars flow from the tree roots into the fungal hyphae.
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Once the sugars enter the fungus, they travel along the hyphae through pores between cells or through special hollow transporter hyphae.
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The fungus absorbs some of the sugars, but some travels on and enters the roots of a neighboring tree, a seedling that grows in the shade and has less opportunity to photosynthesize sugars.
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But why does fungus transport resources from tree to tree?
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This is one of the mysteries of the mycorrhizal networks.
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It makes sense for fungus to exchange soil nutrients and sugar with a tree— both parties benefit.
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The fungus likely benefits in less obvious ways from being part of a network between trees, but the exact ways aren’t totally clear.
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Maybe the fungus benefits from having connections with as many different trees as possible, and maximizes its connections by shuttling molecules between trees.
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Or maybe plants reduce their contributions to fungi if the fungi don’t facilitate exchanges between trees.
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Whatever the reasons, these fungi pass an incredible amount of information between trees.
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Through the mycorrhizae, trees can tell when nutrients or signaling molecules are coming from a member of their own species or not.
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They can even tell when information is coming from a close relative like a sibling or parent.
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Trees can also share information about events like drought or insect attacks through their fungal networks, causing their neighbors to increase production of protective enzymes in anticipation of threats.
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The forest’s health relies on these intricate communications and exchanges.
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With everything so deeply interconnected, what impacts one species is bound to impact others.

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Why practice speaking with this video?

The video "The Secret Language of Trees" featuring Camille Defrenne and Suzanne Simard presents a fascinating exploration of the interconnectedness of trees and their environment. This engaging material offers English learners a rich context to enhance their speaking skills. By practicing speaking with this video, you can:

  • Expand Vocabulary: The discussion introduces unique terms like "mycorrhizal networks" and "photosynthesis," which can enrich your linguistic repertoire.
  • Improve Comprehension: Understanding complex ecological concepts helps in grasping advanced sentence structures and ideas.
  • Practice Speaking Fluency: Repeating phrases can significantly help in improving your pronunciation and fluency, making it easier to integrate these terms into everyday conversations.

Additionally, this video exemplifies how trees communicate and share resources, which can inspire learners to think about communication beyond language, thus enhancing their overall speaking skills.

Grammar & Expressions in Context

The speakers use a variety of grammatical structures that English learners can analyze and practice. Here are some key structures:

  • Use of Present Simple: Phrases like "trees can tell when nutrients or signaling molecules are coming" emphasize ongoing actions or truths, which are essential for providing clear information.
  • Causative Structures: The expression "causing their neighbors to increase production" demonstrates causation in a relatable context, showing how one action influences another.
  • Passive Voice: The phrase "are connected" indicates action without specifying the subject, which is common in scientific writing and useful for learners to understand how to present information objectively.
  • Complex Sentences: The use of subordinate clauses, as seen in "which in turn each have their own unique set of fungal associations," provides complex ideas that challenge learners to structure longer sentences in their speech.

Common Pronunciation Traps

While practicing speaking with this video, English learners may encounter several tricky words and pronunciation nuances:

  • "Mycorrhizal": This term may be difficult due to its length and unfamiliar syllable structure. Pay attention to the breakdown: my-cor-rhiz-al.
  • "Photosynthesis": Break it down into parts: pho-to-syn-the-sis. Focus on making the "th" sound clear to improve overall pronunciation.
  • Complex Terms: Words like "interconnectedness" and "symbiotic" may be challenging. Practice them in phrases to enhance your pronunciation skills through the shadowing app or during shadow speak practices.

By focusing on these pronunciation aspects, you can significantly improve English pronunciation and communicate more effectively, making your learning experience dynamic and engaging.

Qu'est-ce que la technique du Shadowing ?

Le Shadowing est une technique d'apprentissage des langues fondée sur la science, développée à l'origine pour la formation des interprètes professionnels. Le principe est simple mais puissant : vous écoutez de l'anglais natif et le répétez immédiatement à voix haute — comme une ombre suivant le locuteur avec un décalage de 1 à 2 secondes. Les recherches montrent une amélioration significative de la précision de la prononciation, de l'intonation, du rythme, des liaisons, de la compréhension orale et de la fluidité.

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