by Yekaterina BLINOVA, Cand. Sc. (Biol.), Leading Research Scientist, All-Russia Research Institute of Sea Fishing and Oceanography Seaweeds (algae) are the oldest photosynthetic organisms of the earth known to have created its oxygen atmosphere. The land plants come from them. The role of this wonderful family of the plant kingdom is immense indeed. First and foremost, the algae are the primary "producers" of organic matter from inorganic one, the cornerstone of our planet's ecological pyramid. Although their biomass in the World Ocean is something like 1.7 bln tons, their annual produce amounts to as much as 550.2 bln. Marine life, especially in the off-shore zones subject to anthropogenic effects, owes its existence to algae in the long run. They bring down water pollution, they give food and shelter to many invertebrates and fish - to fry in the first place, and they serve as a substrate (attachment base) for sea animals and fish roe. Algae are quite diverse in color, size, structure and form: they may be filamentous, laminar and ramified (branched). Some have small stems and what looks like leaflets; and those growing on solid ground are supplied with anchoring organs like rhizoids, soles and suckers. Physiologically, sea plants are precious. Their layers accumulate, selectively, mineral elements at concentrations dozens and even thousands of times as high as the ambient water. Large algae, the macrophytes, absorb light and nutrients by their entire surface. Pages. 97 Our country is washed by thirteen seas, mostly in the temperate zone. The total biomass of seaweeds tops 10 mln tons, and their yearly produce is severalfold as high. Our seas are inhabited by 850 - 900 macrophyte species (around 170 species of green algae, about 250 red and 450 brown algae species) as well as a variety of sea grasses (Monocotyledoneae) . The offshore macrophytobentos is formed for the most part by brown - laminar and focus (Fucaceae) - algae, which are the largest. They ... Read more

This publication was posted on Libmonster in another country. The article seemed interesting to our editor.

Full version:
English Library · 2137 days ago 0 907
Professional Authors' Comments:
Order by: 
Per page: 
  • There are no comments yet
Library guests comments

0 votes
English Library
London, United Kingdom
14.09.2018 (2137 days ago)
Permanent link to this publication:

Library Partners

ELIBRARY.ORG.UK - British Digital Library

Create your author's collection of articles, books, author's works, biographies, photographic documents, files. Save forever your author's legacy in digital form. Click here to register as an author.

Editorial Contacts
Chat for Authors: UK LIVE: We are in social networks:

About · News · For Advertisers

British Digital Library ® All rights reserved.
2023-2024, ELIBRARY.ORG.UK is a part of Libmonster, international library network (open map)
Keeping the heritage of the Great Britain


US-Great Britain Sweden Serbia
Russia Belarus Ukraine Kazakhstan Moldova Tajikistan Estonia Russia-2 Belarus-2

Create and store your author's collection at Libmonster: articles, books, studies. Libmonster will spread your heritage all over the world (through a network of affiliates, partner libraries, search engines, social networks). You will be able to share a link to your profile with colleagues, students, readers and other interested parties, in order to acquaint them with your copyright heritage. Once you register, you have more than 100 tools at your disposal to build your own author collection. It's free: it was, it is, and it always will be.

Download app for Android