Video Experimental Relacionado

Updated: Feb 16, 2026

Spatial Temporal Analysis of Fieldwise Flow in Microvasculature

Spatial Temporal Analysis of Fieldwise Flow in Microvasculature

Published on: November 18, 2019

Patrones espaciales y temporales del blanqueamiento masivo de los corales en el Antropoceno

Terry P Hughes¹, Kristen D Anderson¹, Sean R Connolly^1,2

¹Australian Research Council (ARC) Centre of Excellence for Coral Reef Studies, James Cook University, Townsville, QLD 4811, Australia.

Science (New York, N.Y.)

|January 6, 2018

Resumen

Los eventos de blanqueo de coral ahora ocurren con más frecuencia, con solo seis años entre eventos severos. Esta tendencia, impulsada por el calentamiento global, amenaza la recuperación de los sistemas de arrecifes tropicales en todo el mundo.

Área de la Ciencia:

Biología marina
Ciencias del clima
Ecología

Sus antecedentes:

Los sistemas de arrecifes tropicales se enfrentan a desafíos sin precedentes debido a los eventos recurrentes de blanqueo de coral.
El intervalo entre eventos severos de blanqueo se está acortando, lo que dificulta la recuperación de los conjuntos de corales maduros.

Objetivo del estudio:

Para analizar los registros mundiales de blanqueamiento de coral de 1980 a 2016.
Determinar la frecuencia cambiante y el tiempo de retorno de los eventos severos de blanqueo de coral.

Principales métodos:

Análisis de registros de blanqueo de 100 localizaciones de arrecifes distribuidas globalmente.
Evaluación estadística del tiempo medio de retorno entre eventos severos de blanqueo en el tiempo.

Principales resultados:

El tiempo medio de retorno entre eventos severos de blanqueo se ha reducido significativamente desde 1980, alcanzando ahora una media de seis años.
Las temperaturas de la superficie del mar tropical han aumentado, lo que lleva a un blanqueamiento más frecuente durante todas las fases de El Niño-Oscilación Sur.
El blanqueamiento de los corales está ocurriendo con más frecuencia, lo que aumenta el riesgo de eventos anuales en el futuro cercano.

Conclusiones:

Los sistemas de arrecifes tropicales están experimentando una nueva era de blanqueamiento frecuente de los corales debido al calentamiento global.
El tiempo de recuperación reducido entre los eventos de blanqueo representa una grave amenaza para la persistencia de los ecosistemas de arrecifes de coral.
La mitigación urgente del cambio climático es necesaria para evitar el blanqueo anual y preservar los arrecifes de coral.

Más Videos Relacionados

Spatial Molecular Imaging of the Glycome Using Mass Spectrometry

Spatial Molecular Imaging of the Glycome Using Mass Spectrometry

Published on: November 28, 2025

Author Spotlight: Separation of Coral Host Tissues and Algal Symbionts and Analyzing Their Metabolites

Author Spotlight: Separation of Coral Host Tissues and Algal Symbionts and Analyzing Their Metabolites

Published on: October 13, 2023

Videos de Conceptos Relacionados

Fixed Action Patterns

Fixed Action Patterns

A fixed action pattern (FAP) is a specific, hard-wired sequence of behaviors that occurs in response to an external stimulus, called a sign stimulus. The behavior is “fixed” because it is essentially unchangeable—proceeding similarly across individuals of a species every time it occurs.

Atomic Mass

Atomic Mass

Atoms — and the protons, neutrons, and electrons that compose them — are extremely small. For example, a carbon atom weighs less than 2 × 10−23 g. When describing the properties of tiny objects such as atoms, we use appropriately small units of measure, such as the atomic mass unit (amu). The amu was originally defined based on hydrogen, the lightest element, then later in terms of oxygen. Since 1961, it has been defined with regard to the most abundant isotope of carbon, atoms of which...

Molar Mass

Molar Mass

The identity of a substance is defined not only by the types of atoms or ions it contains but by the quantity of each type of atom or ion. For example, water, H2O, and hydrogen peroxide, H2O2, are alike in that their respective molecules are composed of hydrogen and oxygen atoms. However, because a hydrogen peroxide molecule contains two oxygen atoms, as opposed to the water molecule, which has only one, the two substances exhibit very different properties.

Patterns of Fever

Patterns of Fever

Before understanding the types and patterns of fever, it is essential to know its phases.

¹H NMR of Labile Protons: Temporal Resolution

¹H NMR of Labile Protons: Temporal Resolution

Protons bonded to heteroatoms such as nitrogen and oxygen exhibit a range of chemical shift values. This is due to the varying degree of hydrogen bonding between the proton and the heteroatom in other molecules. The extent of hydrogen bonding affects the electron density around the proton, thereby giving different chemical shift values for the protons in the proton NMR spectrum.
The –OH proton in alcohols typically appears in the range of δ 2 to 5 ppm but can vary depending on the specific...

Depth Perception and Spatial Vision

Depth Perception and Spatial Vision

Depth perception is the ability to perceive objects three-dimensionally. It relies on two types of cues: binocular and monocular. Binocular cues depend on the combination of images from both eyes and how the eyes work together. Since the eyes are in slightly different positions, each eye captures a slightly different image. This disparity between images, known as binocular disparity, helps the brain interpret depth. When the brain compares these images, it determines the distance to an object.