نتایج جستجو برای: debresia marina
تعداد نتایج: 3988 فیلتر نتایج به سال:
The effects of light-limitation stress were investigated in natural stands of the seagrasses Zostera marina and Cymodocea nodosa in Ria Formosa coastal lagoon, southern Portugal. Three levels of light attenuation were imposed for 3 weeks in two adjacent meadows (2-3 m depth), each dominated by one species. The response of photosynthesis to light was determined with oxygen electrodes. Chlorophyl...
Marina is a mooring facility or port located on body of water that provides service for small boat and yacht. The marinas in Malaysia are managed by private companies few Marine Department Malaysia. There successful However, some failed. This study aims to identify the factors establish marina certain less performed To factors, literature review survey operators method used analyse data was Ana...
In a previous study, we measured the redox potential of the primary electron acceptor pheophytin (Phe) a of photosystem (PS) II in the chlorophyll d-dominated cyanobacterium Acaryochloris marina and a chlorophyll a-containing cyanobacterium, Synechocystis. We obtained the midpoint redox potential (E(m)) values of -478 mV for A. marina and -536 mV for Synechocystis. In this study, we measured th...
Seagrass beds are the foundation species of functionally important coastal ecosystems worldwide. The world's largest losses of the widespread seagrass Zostera marina (eelgrass) have been reported as a consequence of wasting disease, an infection with the endophytic protist Labyrinthula zosterae. During one of the most extended epidemics in the marine realm, ∼90% of East and Western Atlantic eel...
The article addresses the role played within the social imaginary of Brazil by the scientific voyages of physicians in the first half of the twentieth century. Two texts are analyzed: a report by Arthur Neiva and Belisário Penna published in Memórias do Instituto Oswaldo Cruz and another by Julio Paternostro, released in 1945 in Viagem ao Tocantins. The former contributed to singling out pathol...
A harbour can be defined as a sheltered part of a body of water that is deep enough to provide anchorage and operative conditions for loading/unloading of ships. It is also a place in which upland activities interface with waterborne activities. Different harbour classification schemes can be devised based on scale, complexity or activity. SCIENTIA MARINA 71(2) June 2007, 223-238, Barcelona (Sp...
BORIS PEJIN1*, JASMINA GLAMOCLIJA2, ANA CIRIC2, YONG KIEN-THAI3, MARINA SOKOVIC2 1University of Belgrade – Department of Life Sciences, Institute for Multidisciplinary Research, Kneza Viseslava 1, 10030 Belgrade, Serbia 2University of Belgrade – Mycological laboratory, Department of Plant Physiology, Institute for Biological Research “Sinisa Stankovic”, Bulevar Despota Stefana 142, 11000 Belgra...
Leaf structure and water relations were studied in a temperate population of Avicennia marina subsp. australasica along a natural salinity gradient [28 to 49 parts per thousand (ppt)] and compared with two subspecies grown naturally in similar soil salinities to those of subsp. australasica but under different climates: subsp. eucalyptifolia (salinity 30 ppt, wet tropics) and subsp. marina (sal...
Acaryochloris marina is a unique cyanobacterium that is able to produce chlorophyll d as its primary photosynthetic pigment and thus efficiently use far-red light for photosynthesis. Acaryochloris species have been isolated from marine environments in association with other oxygenic phototrophs, which may have driven the niche-filling introduction of chlorophyll d. To investigate these unique a...
Declines in the seagrass Zostera marina L. in estuaries and lagoons have been attributed in part to reductions in irradiance reaching the seagrass blades. Epiphytes growing on Z. marina have the potential to attenuate a large fraction of the light that would otherwise reach the blades. This problem has previously been studied by measuring light penetration through homogenized epiphytic slurries...
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