Video Experimental Relacionado

Updated: Dec 13, 2025

Author Spotlight: Leaf Trait Analysis for Climate and Ecology Reconstruction in Modern and Ancient Plant Communities

Author Spotlight: Leaf Trait Analysis for Climate and Ecology Reconstruction in Modern and Ancient Plant Communities

Published on: October 25, 2024

Antiguo conjunto orogénico y monzónico de la flora alpina templada más rica del mundo

Wen-Na Ding^1,2, Richard H Ree³, Robert A Spicer^1,4,5

¹CAS Key Laboratory of Tropical Forest Ecology, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Mengla, Yunnan 666303, China.

Science (New York, N.Y.)

|August 1, 2020

Resumen

La evolución de las plantas alpinas en la región Tibet-Himalaya-Hengduan comenzó en el Oligoceno, diversificándose en las montañas Hengduan. La construcción de montañas y los monzones impulsaron la diversificación posterior y la expansión de la gama, dando forma a la Tierra

Área de la Ciencia:

Ecología
Biología evolutiva
Paleoclimatología

Sus antecedentes:

Los ecosistemas alpinos se enfrentan a amenazas por el calentamiento global, lo que requiere la comprensión de su historia evolutiva.
La región del Tíbet-Himalaya-Hengduan alberga la flora alpina templada más rica del mundo.

Objetivo del estudio:

Reconstruir la historia evolutiva de las biotas alpinas en la región Tibet-Himalaya-Hengduan.
Comprender cómo los cambios ambientales históricos, incluidos los eventos geológicos y climáticos, dieron forma a la flora alpina.

Principales métodos:

Reconstrucciones filogenéticas del bioma y la evolución del rango geográfico.

Principales resultados:

Los linajes alpinos existentes en la región surgieron a principios del Oligoceno.
La diversificación inicial ocurrió en las montañas de Hengduan.
La diversificación acelerada y la colonización de las áreas adyacentes a principios y mediados del Mioceno fueron impulsadas por la construcción de montañas e intensificaron los monzones asiáticos.

Conclusiones:

Las montañas Hengduan albergan una antigua flora alpina, que existe continuamente por más tiempo que cualquier otra en todo el mundo.
Los eventos geológicos y climáticos pasados han moldeado significativamente las biotas alpinas modernas.
Comprender esta historia evolutiva es crucial para predecir y mitigar los impactos del cambio climático en las especies alpinas.

Más Videos Relacionados

Removal of Exogenous Materials from the Outer Portion of Frozen Cores to Investigate the Ancient Biological Communities Harbored Inside

Removal of Exogenous Materials from the Outer Portion of Frozen Cores to Investigate the Ancient Biological Communities Harbored Inside

Published on: July 3, 2016

Microbiota of Attine Ants' Gardens: Visualizing a Microbial Landscape by Scanning Electron Microscopy

Microbiota of Attine Ants' Gardens: Visualizing a Microbial Landscape by Scanning Electron Microscopy

Published on: October 4, 2024

Videos de Conceptos Relacionados

Global Climate Change

Global Climate Change

Throughout its ~4.5 billion year history, the Earth has experienced periods of warming and cooling. However, the current drastic increase in global temperatures is well outside of the Earth’s cyclic norms, and evidence for human-caused global climate change is compelling. Paleoclimatology, the study of ancient climate conditions, provides ample evidence for human-caused global climate change by comparing recent conditions with those in the past.

Introduction to Plant Diversity

Introduction to Plant Diversity

From Water to Land

Green Algae

Green Algae

Green algae, also referred to as chlorophytes, are different from red algae in having the chloroplasts containing chlorophylls a and b, which give them their distinct green hue. However, they lack phycobiliproteins, preventing them from developing the red or blue-green pigmentation seen in red algae. In terms of photosynthetic pigment composition, green algae closely resemble plants and share a close evolutionary relationship with them. Taxonomically Green algae belong to Phylum Chlorophyta in...

The Colonization of Land

The Colonization of Land

Changes in the environment of the early Earth drove the evolution of organisms. As prokaryotic organisms in the oceans began to photosynthesize, they produced oxygen. Eventually, oxygen saturated the oceans and entered the air, resulting in an increase in atmospheric oxygen concentration, known as the oxygen revolution approximately 2.3 billion years ago. Therefore, organisms that could use oxygen for cellular respiration had an advantage. More than 1.5 years ago, eukaryotic cells and...

Non-vascular Seedless Plants

Non-vascular Seedless Plants

The diverse plant life on Earth—consisting of nearly 400,000 species—can be divided into three broad categories based on biological characteristics: nonvascular, seedless vascular, and seed plants.

Threats to Biodiversity

Threats to Biodiversity

There have been five major extinction events throughout geological history, resulting in the elimination of biodiversity, followed by a rebound of species that adapted to the new conditions. In the current geological epoch, the Holocene, there is a sixth extinction event in progress. This mass extinction has been attributed to human activities and is thus provisionally called the Anthropocene. In 2019 the human population reached 7.7 billion people and is projected to comprise 10 billion by...