نتایج جستجو برای: sea plants
تعداد نتایج: 326291 فیلتر نتایج به سال:
Worldwide emissions of CO2 from human energy-related activities are currently about 30 billion metric tons per year (a metric ton is 10 kg) according to the US Department of Energy International Energy Outlook (http://www.eia.doe.gov/oiaf/ieo/emissions.html). One outcome of the resulting rise in anthropogenic CO2 levels has been a growing concern for the loss of ice and snow in the polar region...
Plants and algae were found useful in the decontamination of water polluted with chlorinated phenolic compounds. An artificial wastewater contaminated with up to 350 ppm herbicide 2,4-dichlorophenol (2,4-DCP), was successfully treated using horseradish, potato and Ulva sp. (sea lettuce), amended with H2O2. Horseradish -mediated provided up to 99% removal of 2,4-DCP from model solution, while, p...
Estimates of the radiocarbon age of seawater are required in correlations between marine and terrestrial records of the late Quaternary climate. We radiocarbon-dated marine shells and terrestrial plant remains deposited in two bays on Norway's west coast between 11,000 and 14,000 years ago, a time of large and abrupt climatic changes that included the Younger Dryas (YD) cold episode. The radioc...
Climate (the average and variability of weather conditions over a period of time) is a primary driver of ecological systems. Important climate and climaterelated factors for ecosystems include precipitation, air and water temperature, ice cover duration, sea level, stream flow, solar radiation, and water clarity. These factors affect resources available to plants, animals, and microbes and act ...
Tryptophol [2-(3-indolyl)-ethanol], a well-known constituent of terrestrial plants and microorganisms, has so far been isolated from tryptophan fermentations, plant seedlings, Aspergillus niger, Agrobacterium tumefaciens, Ceratocystis spp., and Rhizobium spp. (Buckingham, 1994). We have now isolated tryptophol from the marine sponge Ircinia spinulosa collected from the Aegean Sea. In addition t...
The Sea-viewing Wide Field-of-view Sensor (SeaWiFS) provides global monthly measurements of both oceanic phytoplankton chlorophyll biomass and light harvesting by land plants. These measurements allowed the comparison of simultaneous ocean and land net primary production (NPP) responses to a major El Niño to La Niña transition. Between September 1997 and August 2000, biospheric NPP varied by 6 ...
conclusions the findings of this study indicated that these isolates were plant pathogenic fungi, which entered seawater from the environment, and were likely to have a suitable lipase activity on plant oils. results four fungal species were isolated from water samples of the caspian sea (north of iran) between february and june 2011. the nucleotide sequences reported for three of these isolate...
mud volcanoes are defined as main elements of geological structures and ways through and within which buried argillaceous loose sediments and lithified rocks. the gharniaregh tappeh and naftelijeh mud volcanoes are the most attractive geomorphological phenomena in continental which appear along the eastern coast of the caspian sea. the naftelijeh mud volcano is more active than gharniaregh–tapp...
Oxytetracycline-resistant bacteria were isolated from a mariculture farm in China, and accounted for 32.23% and 5.63% of the total culturable microbes of the sea cucumber and the sea urchin rearing waters respectively. Marine vibrios, especially strains related to Vibrio splendidus or V. tasmaniensis, were the most abundant resistant isolates. For oxytetracycline resistance, tet(A), tet(B) and ...
High densities of Evechinus chloroticus are common in the rocky subtidal of outer Dusky Sound, Fiordland. Within this area, organisms are zonated into three habitats. These habitats are a shallow fucoid fringe; a mid-depth barren zone dominated by crustose forms (algae and sessile invertebrates) and devoid of most large algae; a deeper algal meadow where smaller herbaceous and turfing algae pre...
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