Background: Composting as a waste management technology is becoming more widespread. The purpose of this study was to assess the feasibility and to find the most effective composting process for the ratio of green waste, digested and dewatered sludge from Chonibieh wastewater treatment plant in the west region of Ahvaz. Methods: The composting time was 23 days and the evaluated parameters in th...

Little is known about the production of fluorescent dissolved organic matter (FDOM) in the anoxic oceanic sediments. In this study, sediment pore waters were sampled from four different sites in the Chukchi-East Siberian Seas area to examine the bulk dissolved organic carbon (DOC) and their optical properties. The production of FDOM, coupled with the increase of nutrients, was observed above th...

soil enzyme activities are considered as one of the most important biological indicators and reflect the soil quality and fertility. current study was conducted to investigate the relationship between urease, invertase, alkaline phosphatase and aryl sulphatase activities of two histosols (located in kerman and shahrekord provence) and some of the soil chemical and biological properties. soil sa...

dissolved organic carbon of different molecular weights from piration rates of marine plankton populations, p. 289-357. humic and clear waters. Appl. Environ. Microbial. 56: 1672In J. E. Hobbie and P. J. 1eB. Williams, [eds.], Heterotro1677. phic activity in the sea. Plenum. TURLEY, C. M., AND K. LOCHTE. 1990. Microbial response to ZWEIEL, U.L.,B. NORRMAN,AND A. HAGSTROM. 1993. Conthe input of ...

This study investigates whether different intensities of organic matter removal associated with timber harvest influence decadal-scale storage of soil organic carbon (SOC) and total nitrogen (TN) in the top 1 m of mineral soil 18 years postharvest in a Pinus taeda L. forest in the Gulf Coastal Plain. We quantified forest harvest-related changes in SOC, TN, microbial biomass carbon (MBC), and ni...

The investigated section cropping out in Kuh-e-Banesh, Zagros basin (southern Iran) is represented by limestone, Cherty beds and marllevels bearing abundant Planktonic foraminifers, radiolarian microfaunas, and ammonite imprints. For the first time, well to moderatelypreserved forms of Planktonic foraminifera have been extracted from black shale and marls levels. Extracted biota was studied wit...

The inventories of carbon residing in organic matter dissolved in the ocean [dissolved organic carbon (DOC)] and in the atmosphere as CO2 are of the same order of magnitude, such that small changes in the DOC pool could have important consequences in atmospheric carbon and thus climate. DOC in the global ocean is largely formed in the sunlit euphotic zone, but identifying predictable controls o...

Title of Dissertation: THE REGULATION OF BACTERIOPLANKTON CARBON METABOLISM IN A TEMPERATE SALTMARSH SYSTEM Jude Kolb Apple, Doctor of Philosophy, 2005 Dissertation Co-Directed By: Professor Paul A. del Giorgio Department of Biological Sciences Université du Québec à Montréal Professor W. Michael Kemp Horn Point Laboratory University of Maryland Center for Environmental Science This study descr...

Macroalgae or macrophytes are a heterogeneous assemblage of macroscopic eukaryotes belonging to various evolutionary lineages, which live predominantly in aquatic habitats. They have undifferentiated vegetative bodies organized in pseudoparanchymatous and parenchymatous bodies. As with higher plants, marine macroalgae or seaweeds are photosynthetic species that, by harvesting sunlight energy, c...

Runoff leads to the leaching of soil nutrients, transports the topsoil particles and deposits the sediments in water reservoirs. Recognition of different environmental factors affecting the runoff properties and water infiltration depth has a great importance concerning soil for the integrated management of watershed and the distinguishment of complex hydrological processes. Thus, this research...