نتایج جستجو برای: sea plants
تعداد نتایج: 326291 فیلتر نتایج به سال:
objective: the present study is based on an ethnobotanical research project conducted in hormozgan province that is located in south of iran, bordering waters of the persian gulf and oman sea. this survey was carried out in order to recover the ethnobotanical and ethnomedicinal knowledge of the residents of this province. they are using medicinal and functional plants for treating or preventing...
cement is an essential ingredient in the concrete buildings. for production of cement considerable amount of fossil fuel and electrical energy is consumed. on the other hand for generating one tone of portland cement, nearly one ton of carbon dioxide is released. it shows that 7 percent of the total released carbon dioxide in the world relates to the cement industry. considering ecological issu...
This study challenges the paradigm that salt marsh plants prevent lateral wave-induced erosion along wetland edges by binding soil with live roots and clarifies the role of vegetation in protecting the coast. In both laboratory flume studies and controlled field experiments, we show that common salt marsh plants do not significantly mitigate the total amount of erosion along a wetland edge. We ...
Seagrasses are marine angiosperms that evolved from land plants but returned to the sea around 140 million years ago during the early evolution of monocotyledonous plants. They successfully adapted to abiotic stresses associated with growth in the marine environment, and today, seagrasses are distributed in coastal waters worldwide. Seagrass meadows are an important oceanic carbon sink and prov...
The biological systems known as ecosystems are always composed of a great number of "pa r tne r s " (10, 26, 27). Solar energy, which is the origin of life, is captured by plants possessing chlorophyll (the green plants) which grow on land and in the sea. All species of vegetarian animals, from minuscule crustaceans to elephants, feed on these plants. Such animals may be devoured by carnivores,...
Pilot experiments in the tidally dominated Dutch Wadden Sea indicated a negative relationship between Zostera marina L. transplantation success and tidal depths. As light availability was sufficient, we hypothesised that water dynamics (particularly waves) and ensuing sediment mobility (movement or resuspension of the sediment) were the major cause for the loss of transplants at larger depths. ...
the distribution and abundance of high aquatic plants in the gorganroud river was examined at five stations in four seasons (20 samples) over one year period during 2009-2010. we identified 21 species of aquatic plants from 21 genera, belonging to 9 families. these species were determined as 3 halophytic species (14.2%) and 18 high aquatic plants (85.7%).the highest species diversity was observ...
considering the increasing rice consumption in the world and also the excessive application of pesticides to increase production, an experiment was conducted to determine the pesticide residues and their effects on nitrogen, potassium and phosphorus content of hashemi, khazar and gohar (sa13) rice cultivars, in a factorial design at randomized complete block design with three replications. in t...
“The naturalist looking at species as he might succeed from a fork low down in the separation of the species of any species in a more or less from their sap this is unimportant for the instincts already possessed by certain plants so that natural selection of mere piles of superimposed strata and watch the sea separating an island even if we believe that pure water can effect little or no offsp...
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