Results 101 to 110 of about 6,189 (215)

Distribution and Density of Vegetative Hydrilla Propagules in the Sediments of Two New Zealand Lakes [PDF]

open access: yes, 1999
The distribution and density of hydrilla (Hydrilla verticillata (L.f.)Royle) turions and tubers in two New Zealand lakes were assessed by sampling cores of sediment from Lakes Tutira and Waikapiro each year from 1994 to 1997.
Champion, P.D.   +3 more
core  

CHEMICAL RESTORATION IN NITELLA [PDF]

open access: yesJournal of General Physiology, 1935
Cells of Nitella exposed to distilled water lose their ability to produce action currents and to distinguish electrically between sodium and potassium. This ability was quickly restored by exposure to blood plasma deprived of calcium. Human blood and that of the cat, calf, and sheep gave essentially the same results.
openaire   +3 more sources

Hydroacoustic Survey and Point Sampling of Macrophytes In Diamond Lake 2009 [PDF]

open access: yes, 2010
MaxDepth Aquatics, Inc. was contracted to conduct a hydroacoustic survey of macrophyte distribution in Diamond Lake in 2009. The survey essentially repeated surveys conducted in 2002 and 2007, allowing for a detailed assessment of conditions in 2009 and ...
Eilers, Benn   +3 more
core   +1 more source

Reconstruction of the charophyte community of Lake Shinji by oospore collection

open access: yesKnowledge and Management of Aquatic Ecosystems, 2016
Submerged aquatic vegetation (SAV) aids in maintaining a clear stable state in shallow lakes. However, charophytes are more effective in increasing transparency compared to angiosperms.
Komuro T.   +3 more
doaj   +1 more source

Functional diversity of macrophyte communities within and between Pyrenean lakes [PDF]

open access: yes, 2015
Submersed vegetation is a common feature in about 70% Pyrene an high mountain (>1500 m a.s.l.) lakes. Isoetids and soft-water elodeids are common elements of this underw ater flora and can form distinct vegetation units (i.e.
Ballesteros i Sagarra, Enric, 1958-   +4 more
core  

CYANOPHYCEAE, EUGLENOPHYCEAE, CHLOROPHYCEAE, ZYGNEMATOPHYCEAE Y CHAROPHYCEAE EN ARROZALES DE CHILE CYANOPHYCEAE, EUGLENOPHYCEAE, CHLOROPHYCEAE, ZYGNEMATOPHYCEAE AND CHAROPHYCEAE IN CHILEAN RICE PADDIES

open access: yesGayana: Botanica, 2000
Se realizó un estudio taxonómico de ciertos grupos de algas en algunos arrozales de Chile provenientes de 15 localidades comprendidas entre la VI y VIII regiones. Se analizó un total de 31 muestras colectadas en enero de 1997. Se determinó un total de 40
Iris Pereira   +2 more
doaj  

Characeae of Nebraska [PDF]

open access: yes, 1944
The object of this resulting paper is to review the Characeae already published for the state and to report additional ...
Daily, Fay K.
core   +1 more source

Chrysosphaerella and the phytoplankton of the Little Sea, Dorset [PDF]

open access: yes, 1994
The Little Sea is an 80-acre, shallow freshwater lake formed about a hundred years ago by sand-dunes cutting off a sea-inlet at Studland Bay, near Swanage. This work presents a general survey of the phytoplankton in the lake from October 1990 to December
Stevens, Derek
core  

Nitella syncarpa Chevall.

open access: yes, 2021
Nitella syncarpa (Thuill.) Chevall. Verwachsenfrüchtige Glanzleuchteralge Art ISFS: Checklist: 50040 Characeae Nitella Nitella anarthrodactylée Nitella syncarpa (Thuill.) Chevall. Bestimmungsschlüssel Zusammenfassung Artbeschreibung Mittelgrosse Pflanze (15 - 40 (70) cm), ziemlich robust, manchmal verkrustet. Sprossachse: 0,7 - 1 mm dick.
openaire   +1 more source

First record of Nitellopsis obtusa (Characeae) in Mongolia: A novel genus in the national flora

open access: yesJournal of Asia-Pacific Biodiversity
Nitellopsis obtusa (Desv.) J.Groves, the species of charophytes (Characeae, Charales), has a wide distribution from Europe to Asia, and is listed as a threatened species in certain countries.
Syou Kato   +5 more
doaj   +1 more source

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