Results 131 to 140 of about 162,760 (333)

Seascape configuration determines spatial patterns of seabird‐vectored nutrient enrichment to coral reefs

open access: yesEcography, EarlyView.
Pelagic‐feeding seabirds deliver nutrient subsidies that enhance the productivity, biodiversity, and resilience of terrestrial and marine ecosystems, particularly in nutrient‐poor tropical environments. However, the biogeophysical variables governing the fluxes of these nutrients within and among interconnected ecosystems remain poorly understood.
Courtney E. Stuart   +11 more
wiley   +1 more source

Assessing the effects of urea and TMRL media on laboratory cultivation of Gracilaria corticata [PDF]

open access: yes, 2005
The effects of urea and TMRL media have been surveyed on the laboratory cultivation of Gracilaria corticata during 41 days in spring 2002, using sea water as control. We used nine 25 liter aquariums each containing 100 grams of the red algae.
Akbari, H.   +2 more
core  

Of all shapes and sizes: a theoretical framework for animal‐mediated terrestrial heterogeneity across scales

open access: yesEcography, EarlyView.
Animals redistribute elements throughout their lives by depositing wastes and carcasses. Growing evidence shows that these zoogeochemical processes enhance landscape diversity and heterogeneity worldwide. We provide a descriptive framework for understanding how direct animal depositions (i.e.
Kristy M. Ferraro, Janey R. Lienau
wiley   +1 more source

Antibacterial and Anti-oxidant activity of three species of green, brown and red algae from Northern coast of Persian Gulf

open access: yesIranian South Medical Journal, 2015
Background: Marine algae are shown to contain a wide range of bioactive compounds, which have commercial application in pharmaceutical, medical, cosmetic, nutraceutical, food and agricultural industries.
Mohseen Heidari   +4 more
doaj  

Antibacterial properties of some marine algae of Sri Lanka [PDF]

open access: yes, 1975
The authors report on the antibacterial activity of 11 algae, green, brown and red. Prepared extracts were tested, and varying degrees of activity were exhibited.
Sachithananthan, K., Sivapalan, A.
core  

Uji Sitotoksisitas Ekstrak Metanol Alga Cokelat (Phaeophyta) Pada Lini Sel Kanker Payudara MCF - 7 [PDF]

open access: yes, 2020
Marine algae (brown algae) have been considered as a source of bioactive compounds as they may be used as food, material for industry and herbal medicine. The objective of this study was to determine the cytotoxic activity of methanolic extracts of brown
Kurniatanty, Isma
core   +1 more source

Effects of phytoplankton species distribution on particulate organic carbon dynamics along a coastal gradient

open access: yesEcography, EarlyView.
Phytoplankton communities affect carbon dynamics worldwide, strongly influencing the quality and quantity of organic carbon in coastal ecosystems. Yet, we still know little about the impacts of changing phytoplankton community composition on the potential carbon pathways in estuaries and coasts.
Catharina Uth   +4 more
wiley   +1 more source

日本産海藻の羊赤血球に対する溶血作用と保護作用 [PDF]

open access: yes, 2012
Hemolytic and protective activities of crude extracts from 9 seaweed (6 green algae, 2 brown algae and 1 red alga) on sheep red blood cells were evaluated by the absorbance at 541 nm and 576 nm by the spectrophotometric analysis. Same species showed high
柴田 潔   +2 more
core  

Total Synthesis of Ectocarpin A

open access: yesEuropean Journal of Organic Chemistry, EarlyView.
A fully enantioselective total synthesis of ectocarpin A, a new oxylipin, has been achieved in 12 steps starting from tetrahydro‐1H‐cyclopentafuranone. Key steps include the formation of the chiral core, diastereoselective epoxidation, enzymatic desymmetrization of a 1,4‐diol, epimerization, and strategic Wittig and Julia‐Kocienski olefinations to ...
Alexandre Guy   +2 more
wiley   +1 more source

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