Related Experiment Video
Updated: Mar 24, 2026
07:00
Microbiota of Attine Ants' Gardens: Visualizing a Microbial Landscape by Scanning Electron Microscopy
Published on: October 4, 2024
1.3K
Ecosystem function decays by fungal outbreaks in Antarctic microbial mats
David Velázquez1, Alberto López-Bueno2, Daniel Aguirre de Cárcer2
1Departamento de Biología, Universidad Autónoma de Madrid, Madrid, Spain.
Scientific Reports
|March 15, 2016
Summary
Microbial mats in Antarctica show signs of decay, with blighted patches linked to increased fungi and nitrogen loss. This Antarctic ecosystem degradation may be accelerated by rapid regional warming.
Area of Science:
- Microbial Ecology
- Antarctic Ecosystems
- Environmental Science
Background:
- Antarctica possesses diverse freshwater and terrestrial ecosystems.
- Microbial mats are key systems in terms of biomass and metabolic functions in Antarctica.
Purpose of the Study:
- To describe blighting phenomena in Antarctic microbial mats.
- To investigate the causes and implications of these blighted patches.
Main Methods:
- Macroscopic observation of blighted patches in microbial mats.
- Analysis of physiological traits, nitrogen levels, and microstructural changes.
- Correlation with fungal abundance and environmental warming.
Main Results:
- Observed lysis plaque-like blighted patches on Livingston Island.
- Blighting associated with physiological decay, nitrogen depletion, and microstructural alterations.
- High fungal abundance and physical changes linked to biogeochemical gradient disruption.
Conclusions:
- Antarctic microbial mat decay is linked to increased fungal activity and physical disruption.
- Warming temperatures in the Antarctic Peninsula may accelerate this ecosystem degradation.
More Related Videos
14:38Establishment of Microbial Eukaryotic Enrichment Cultures from a Chemically Stratified Antarctic Lake and Assessment of Carbon Fixation Potential
Published on: April 20, 2012
11.9K
12:34Agar-Block Microcosms for Controlled Plant Tissue Decomposition by Aerobic Fungi
Published on: February 3, 2011
15.5K
Related Concept Videos
01:28Biodeterioration
27
Biodeterioration refers to the unwanted alteration of materials caused by microorganisms—especially fungi—which damage both organic substrates (paper, wood, textiles) and inorganic ones (stone, plaster, glass). Unlike abiotic decay, biodeterioration results from biological activity that produces physical disruption and chemical degradation.Physical deterioration occurs as fungal hyphae penetrate pores, cracks, and surface irregularities. Hyphal turgor pressure, thigmotropic growth...
27
01:25Microbial Mats
21
Microbial communities forming biofilms and mats represent complex, spatially structured ecosystems where metabolic processes are stratified according to light, oxygen, and nutrient gradients. Biofilms are initial colonization stages, only a few millimeters thick, while mature microbial mats can reach centimeter-scale thickness and display intricate vertical organization. Their structural and functional heterogeneity allows microorganisms to occupy distinct ecological niches within a few...
21
01:30Marine Microbial Ecology
16
Marine microbial ecosystems are shaped by distinct physicochemical limits, including high salinity, low nutrient availability, and fluctuating oxygen levels. These conditions favor smaller microbial cell sizes, which maximize their surface-to-volume ratio for efficient nutrient uptake.Microbial activity and community composition are closely linked to biogeochemical cycles, particularly in dynamic environments like estuaries, where halotolerant microbes thrive in response to variable salinity...
16
01:24Freshwater Microbial Ecology
16
Freshwater systems such as streams, rivers, and lakes exhibit distinct physical and biological characteristics that influence their microbial communities. These environments are broadly categorized into lotic systems—those with flowing waters like streams and most rivers—and lentic systems, which include still or slow-moving waters such as lakes, ponds, and marshes.In lentic systems, phytoplankton drive primary production, generating autochthonous organic carbon. In contrast, lotic...
16
01:27Microbes and Climate Change
16
Microorganisms are pivotal agents in Earth's biogeochemical cycles, significantly influencing climate dynamics through their metabolic activities. These microbes modulate the levels of key greenhouse gases by both contributing to and helping mitigate climate change.Microbial Contributions to Greenhouse Gas EmissionsRising global temperatures accelerate microbial metabolism, which, in turn, speeds up the decomposition of organic matter. This process releases carbon dioxide (CO₂) through...
16
01:29Soil Microbial Ecology
16
Soil microbial ecology is defined by highly diverse, spatially structured communities that drive nutrient cycling, organic matter turnover, and overall ecosystem stability. Although a gram of soil can contain thousands of bacterial and archaeal taxa, the ecological processes they mediate are even more crucial for sustaining terrestrial life.Microhabitats and NichesSoil is a heterogeneous mixture of minerals, organic matter, water, and air. Microbes inhabit distinct microhabitats formed by...
16