The Water Net, Hydrodictyon
نویسندگان
چکیده
منابع مشابه
Ecological impacts of water net (Hydrodictyon reticulatum) in Lake Aniwhenua, New Zealand
The ecological impacts of Hydrodictyon reticulatum blooms (1989-94) were studied at Lake Aniwhenua (a constructed lake) in North Island, New Zealand by collating fish, invertebrate and macrophyte data collected towards the end of a four year bloom period and following its decline. Hydrodictyon reticulatum had some localised impacts on the biota of the lake. Some macrophyte beds were smothered t...
متن کاملThe Cell Sap of Hydrodictyon
Analysis of the cell sap of Hydrodictyon patenaeforme Pocock, from California indicates the usual marked accumulation of potassium, which is 4000 times as concentrated as in the surrounding pond water. Small amounts of sodium and calcium were found. Chloride makes up about three-fourths of the anions, with a very high sulfate, and much lower bicarbonate concentration accounting for most of the ...
متن کاملIon Transport in Hydrodictyon africanum
The concentrations of K, Na, and Cl in the cytoplasm and vacuole, the tracer fluxes of these ions into and out of the cenocyte, and the electrical potential difference between bathing solution and vacuole and cytoplasm, have been measured in Hydrodictyon africanum. If the ions were acted on solely by passive electrochemical forces, a net efflux of K and Cl and a net influx of Na would be expect...
متن کاملEffects of mannitol hypertonicity on water and ion contents in the alga Hydrodictyon reticulatum.
Long-term effects of mannitol hypertonicity on the water and ion contents in the fresh-water alga Hydrodictyon reticulatum were studied. The cells did not behave as osmometers and a closer examination suggested that wall elasticity was related to the medium tonicity and that the rate of sodium extrusion from the cells depended on the wall (turgor) pressure.
متن کاملThe effect of ouabain on the Alga Hydrodictyon reticulatum.
The action of the cardiac glycoside ouabain on animal cells was thoroughly studied and its characteristics are well known (see Weatherall 1962): the cells gain sodium and lose potassium, the cell membrane potential decaying. This is commonly interpreted as a rerult of a specific sodium-potassium transport inhibition . The effects of ouabain were also looked for on giant cells of Characeae; some...
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ژورنال
عنوان ژورنال: Nature
سال: 1960
ISSN: 0028-0836,1476-4687
DOI: 10.1038/188545a0