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Related Concept Videos

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Other Algae

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The group Stramenopiles include some phototrophic microorganisms. Members of this group possess flagella covered in numerous short, hairlike extensions, a feature that inspired the group's name, derived from the Latin words for "straw" and "hair." Some of the main categories of Stramenopiles include diatoms, golden algae, and brown algae.Diatoms are unicellular, photosynthetic eukaryotes, with over 200 known genera. They play a key role in the planktonic communities of both marine and...
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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...
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Related Experiment Video

Updated: Oct 25, 2025

Sampling, Sorting, and Characterizing Microplastics in Aquatic Environments with High Suspended Sediment Loads and Large Floating Debris
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Sampling, Sorting, and Characterizing Microplastics in Aquatic Environments with High Suspended Sediment Loads and Large Floating Debris

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Marine macrophytes retain microplastics.

E E Esiukova1, O I Lobchuk1, A A Volodina1

  • 1Shirshov Institute of Oceanology, Russian Academy of Sciences, 36, Nahimovskiy prospekt, Moscow 117997, Russia.

Marine Pollution Bulletin
|August 3, 2021
PubMed
Summary
This summary is machine-generated.

Microplastic (MP) contamination is higher inside aquatic plant thickets in the Baltic Sea. Fibers dominate MP pollution, with algae accumulating significantly higher levels than surrounding sands.

Keywords:
MacroalgaeMacrophytesMicroplasticsThe Baltic SeaThicketsWater samples

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Area of Science:

  • Environmental Science
  • Marine Biology
  • Ecotoxicology

Background:

  • Microplastics (MPs), particles ranging from 0.2-5 mm, pose a growing threat to marine ecosystems.
  • Aquatic vegetation, such as macrophytes, can influence the distribution and accumulation of environmental contaminants.

Purpose of the Study:

  • To quantify and compare microplastic contamination levels in water inside and outside macrophyte thickets in the Baltic Sea.
  • To identify the predominant types and abundance of microplastics associated with algae and compare them to other marine habitats.

Main Methods:

  • Water samples were collected from within and outside macrophyte thickets in the Baltic Sea.
  • Microplastic abundance and types (fibers, fragments, etc.) were analyzed in water samples and on algae.
  • Algal samples were categorized by type (filamentous vs. cartilaginous) to assess differential microplastic retention.

Main Results:

  • Microplastic particle concentration in water was 1.7 times higher within macrophyte thickets compared to outside areas.
  • Fibers constituted the vast majority (92.5%) of the identified microplastics.
  • Algae showed high microplastic abundance (1245 ± 1020 items/m²) and (376 ± 404 items/kgDW), significantly exceeding levels found in swash zone sands.

Conclusions:

  • Macrophyte beds act as accumulation zones for microplastics, particularly fibers, in the Baltic Sea.
  • Filamentous algae demonstrate a greater capacity for retaining microplastic fibers than cartilaginous algae.
  • Seagrass-covered areas exhibit substantially higher microplastic contamination in water and sediments compared to adjacent regions.