Seaweeds: Their Productivity and Strategy for Growth

@article{Mann1973SeaweedsTP,
  title={Seaweeds: Their Productivity and Strategy for Growth},
  author={K. Mann},
  journal={Science},
  year={1973},
  volume={182},
  pages={975 - 981}
}
  • K. Mann
  • Published 1973
  • Environmental Science, Medicine
  • Science
[Fhe edge of the sea is one of the best habitats for plant growth in temperate latitudes. In favorable circumstances, net primary productivity may be as high as anywhere else on earthcomparable, for example, to a tropical rain forest. Seaweeds, which have successfully colonized this zone, are a unique form of life. They are attached to a hard substrate, not by a root system, but by a holdfast. Instead of relying on a rather localized supply of nuLtrients in the soil, they take their nutrients… Expand

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References

SHOWING 1-10 OF 49 REFERENCES
Ecological energetics of the sea-weed zone in a marine bay on the Atlantic coast of Canada. II. Productivity of the seaweeds
TLDR
The growth of the seaweeds Laminaria longicruris, L. digitata and Agarum cribrosum were followed by SCUBA divers for two years, and it was found that the blades behaved like moving belts of tissue, eroding at the tips while growing at the bases, so that a total year's growth amounted to 1 to 5 times the initial length. Expand
Ecological energetics of the seaweed zone in a marine bay on the Atlantic coast of Canada. III. Energy transformations by sea urchins
TLDR
A critical review of energy budgets for 6 other species of marine benthic grazers revealed large amounts of energy unaccounted for that might be attributed to loss of dissolved organic matter. Expand
Heterotrophy in Arctic Sublittoral Seaweeds: An Hypothesis
TLDR
The purpose in bringing together pertinent field observations and brief discussions of some of the important literature is to focus attention on the general problem of dark adaptation in arctic seaweeds, and offering a working hypothesis: that heterotrophy bolsters photosynthesis in aric deep water benthic marine algae. Expand
Production Potential of a Seaweed–Lobster Community in Eastern Canada
TLDR
The available information suggests lobster production in the seaweed zone could be increased by reducing predation and competition for food, together with an increase in suitable shelter. Expand
The origin of nitrogen and phosphorus for growth of the marine angiosperm Thalassia testudinum
TLDR
Yield-nutrient supply correlations indicate that a singnificant proportion of the phosphorus, and virtually all nitrogen for leaf growth are taken-up from the sediments, and that growth is generally limited by availability of nitrogen. Expand
Studies on algal substances in the sea. III. The production of extracellular organic matter by littoral marine algae
TLDR
Nitrogenous materials were exuded in greater concentrations during conditions which appeared injurious to the plants, including excessive desiccation, heavy rain, and extremely low temperature. Expand
Ecological energetics of the seaweed zone in a marine bay on the Atlantic coast of Canada. I. Zonation and biomass of seaweeds
TLDR
An intertidal and underwater survey of the zonation of seaweed in St. Margaret's Bay, NovaScotia, Canada showed 8 major zones as one proceeded away from shore, but carbon content and calorific value of dry matter showed little difference with species or season. Expand
THE EFFECTS OF GRAZING BY SEA URCHINS, STRONGYLOCENTROTUS SPP., ON BENTHIC ALGAL POPULATIONS1
TLDR
Observations of the rate and pattern of algal succession for periods of up to three years showed that following an initial establishment of new species, brown algae began to dominate and the rate of domination is related to the area’s tidal height, with succession most rapid in the lower intertidal areas or subtidally. Expand
SUBLITTORAL ECOLOGY OF KELP BEDS OF THE OPEN COAST AREA NEAR CARMEL, CALIFORNIA
1. Aqualung dives along the open coast south of Carmel, California, have been made over a period of two years.2. The predominant kelp on the open coast in the Monterey area is Nereocystis luetkeana;Expand
Growth of amputated and dark-exposed individuals of the brown alga Laminaria hyperborea
The seasonal growth of the brown alga Laminaria hyperborea(Gunn.) Foslie, which forms dense forests in the sublittoral zone of Helgoland, a rocky island in the Southern North Sea, was investigated byExpand
...
1
2
3
4
5
...