Results 31 to 40 of about 722 (164)

THE SYSTEMATIC POSITION OF THE FUCALES [PDF]

open access: yesNew Phytologist, 1939
T HE Fucales are probably the most widely distributed and the most abundant of all the brown algae. They have certainly reached the highest level of morphological and anatomical differentiation, yet their systematic position remains one of apparent isolation, and it has recently been claimed that they have been derived independently of all the other ...
openaire   +1 more source

Historical biogeography of the widespread macroalga Sargassum (Fucales, Phaeophyceae) [PDF]

open access: yesJournal of Phycology, 2019
Sargassum is a cosmopolitan brown algal genus spanning the three ocean basins of the Atlantic, Pacific and Indian Oceans, inhabiting temperate, subtropical and tropical habitats. Sargassum has been postulated to have originated in the Oligocene epoch approximately 30 mya according to a broad phylogenetic analysis of brown macroalgae, but its ...
Zhi Ting Yip   +2 more
openaire   +2 more sources

Feulgen Reaction in the Fucales [PDF]

open access: yesNature, 1959
THE Feulgen reaction has not been used to any great extent in cytological investigations of the larger brown algae1–4, possibly on account of the difficulty of obtaining consistent results. The following technique has now been applied successfully to growing vegetative apices and to developing receptacles of all the British members of the Fucales, with
openaire   +1 more source

Loss of canopy-forming algal richness and coverage in the northern Adriatic Sea

open access: yesEcological Indicators, 2021
Canopy-forming macroalgae, especially those belonging to the order Fucales, are creating the so-called brown algal forests that are considered amongst the most productive assemblages in the shallow coastal area.
Martina Orlando-Bonaca   +2 more
doaj   +1 more source

Macroalgal assemblages as indicators of the ecological status of marine coastal systems: A review

open access: yesEcological Indicators, 2021
Macroalgae have been utilized as biological indicators of ecosystem health in many monitoring programs worldwide. These programs have utilized various methods to quantify macroalgal community structures.
R. D'Archino, L. Piazzi
doaj   +1 more source

Dynamic structural colour increases photosynthetic performance in the alga Ericaria selaginoides

open access: yesApplied Phycology, 2021
Structural colour occurs when nanoscale structures interfere with incident light transmission and reflect particular wavelengths. The brown alga Ericaria selaginoides (Fucales, Phaeophyceae) has an opalescent photonic crystal anatomy that creates the ...
Barry Pettifor   +2 more
doaj   +1 more source

Coexistence of the reef-building coral Cladocora caespitosa and the canopy-forming alga Treptacantha ballesterosii: Description of a new Mediterranean habitat

open access: yesScientia Marina, 2020
Shallow Mediterranean rocky environments are usually dominated by macroalgae, but the stony colonial zooxan­thellate coral Cladocora caespitosa is able to build extensive banks in some particular areas.
Alèssia Pons-Fita   +4 more
doaj   +1 more source

Ascophyllum nodosum Application and Pre-Sowing Stimulation with Low-Frequency Magnetic Field as Factors Influencing Oat Grains (Avena sativa L.) Composition

open access: yesAgronomy, 2020
In this study, we tested the influence of two experimental factors on the composition of oat grain Avena sativa under the conditions of a three-year field study.
Barbara Drygaś   +3 more
doaj   +1 more source

Thermal vulnerability of the Levantine endemic and endangered habitat-forming macroalga, Gongolaria rayssiae: implications for reef carbon

open access: yesFrontiers in Marine Science, 2022
Ocean warming is a major threat to marine ecosystems, especially to species with a narrow thermal niche width and narrow biogeographic distribution, like some habitat-forming seaweeds.
Martina Mulas   +6 more
doaj   +1 more source

Hormophysa cuneiformis (Phaeophyta: Fucales) in Micronesia [PDF]

open access: yesPacific Science, 2004
Specimens of Hormophysa cuneiformis ( J. Gmelin) P. Silva, collected by R. E. DeWreede in July 1968 and by the author in January 1971 from Palau, are documented for the first time and represent the first collections of a member of the family Cystoseiraceae from Micronesia. A single specimen 6 cm tall of H. cuneiformis was collected 4.5 yr later in July
openaire   +1 more source

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