Mortality and survival of eggs and chicks of Western Reef Heron Egretta gularis on Nakhilo Island, Persian Gulf, 2008
January 2011
In a study on breeding processes of Western Reef Heron Egretta gularis carried out from March to September 2008 on Nakhiloo Island, we estimated the breeding population, mortality, natality and the breeding success of this species. The breeding success during the incubation, nestling, post-nestling and overall stages were 62.1, 46.4, 39.2 and 49.2%, respectively. Eating of the eggs by Black...
Geochemistry and ionic interaction in the Bizerte Lagoon waters (Northern Tunisia)
January 2011
The Bizerte Lagoon is classified in the category of medium salinity environments. The lagoon geochemistry, with regard to the major ions, is essentially controlled by the continental contributions and interactions with the marine environment. The geochemical analyses of the major ions as well as their behaviour in the lagoon water permitted to describe the eventual ability of a solution chemical...
Polychlorinated biphenyls and chlorinated pesticides in the mussel Mytilus galloprovincialis sampled along the Moroccan Atlantic Coast
December 2010
The mussel samples (Mytilus galloprovincialis) were collected from 13 sites along 2,000 km of the Moroccan Atlantic coast. Specimens were collected in the wet seasons (winter) of 2003, 2004 and 2007, and in the dry seasons (spring and summer) of 2003, 2005, 2006 and 2007. Polychlorinated biphenyls (PCBs), DDT and its derivatives, aldrin, heptachlor and hexachlorobenzene (HCB), were quantified in the...
Comparison of two methods for estimating energy storage efficiency in phytoplankton photosynthesis
December 2010
The energy storage efficiency of photosynthesis is a sensitive diagnostic tool for probing the physiological status of phytoplankton in the laboratory and in nature. Furthermore, it is also a key factor in determining the economics of photobioreactors and algal mass culture ponds for the production of biodiesel and related applications. Photoacoustics allows direct determination of the energy storage...
Litter decomposition dynamics associated with cashew nut plantation in coastal habitat of Orissa, India
November 2010
Being a key process in nutrient and carbon cycling in coastal ecosystems, decomposition of litter in coastal sand dunes of Orissa was studied in relation to abiotic and biotic factors. Microbial isolation was performed using standard procedures and decomposition of leaf litter was studied using litter bag technique. Higher microbial populations were encountered in soil with cashew plantations compared to...
Morphotectonics and formation of the Taiwan Bank Canyon, Southwest offshore Taiwan Island
November 2010
The South Taiwan Bank Canyon (STBC) is a large canyon on the southwest offshore Taiwan Island, bearing significant implications in fossil energy exploration. In this study, we analyze the morphology and sedimentary structure of the STBC, as well as those in nearby continental margin, using high-resolution swath bathymetry and seismic data. The the STBC is multiple-headed, steep in the upper part as a...
Integration of coastal and marine areas into sustainable development strategies: A case study of Africa
October 2010
The coastal and marine environments of the African region are uniquely situated to support a variety of activities and to serve diverse human needs for food, transport, and recreation. The pressures from growing populations in coastal zones of Africa, expanding coastal tourism, intensified fisheries, and a large number of other economic activities pose an increasing threat, which jeopardize the quality of...
Automated techniques for quantification of beach change rates using Landsat series along the North-eastern Nile Delta, Egypt
February 2010
Ten scenes of Landsat sensors (MSS, TM and ETM+) at unequal intervals spanning 35-year period between 1972 and 2007, were analyzed to quantify erosion and accretion pattern along the North-eastern coastline of Nile Delta, from Gamasa to Port Said. Rates of shoreline changes were calculated from automated waterline positions generated at 852 locations using a Digital Shoreline Analysis System (DSAS) version...
Chum salmon spawners do not respond to flickering near-UV radiation that could be used to drive away egg predators in spawning streams
February 2010
Chum salmon (Oncorhynchus keta) eggs are eaten in large numbers by Japanese dace (Tribolodon hakonensis) in the spawning streams in Hokkaido. One way to reduce predation on salmon eggs might be to use flickering near-ultraviolet (UV) radiation at 386 nm, to which Japanese dace is known to react negatively. The effect of flickering near-UV on chum salmon was determined in this paper. Sexually mature chum...
Breeding biology of South American Tern from Cardos Island, Santa Catarina State, Brazil
January 2010
The South American Tern Sterna hirundinacea Lesson, 1831 occurs in the Atlantic Ocean, from Tierra del Fuego (Argentina) to Bahia (Brazil) and in the Pacific Ocean all around the southern part of the continent, up the Peruvian coast. Daily observations were conducted from April to November in 2003, 2005 and 2006 to gather information on the reproductive biology of the South American Tern in the...
A theoretical spectrum for multi-peaked energy sea states
January 2010
The single peaked JONSWAP and double peaked Torsethaugen spectra are unable to simulate multi-peaked spectral sea states effectively. A theoretical spectrum was developed from a modified Weibull distribution and presented. The multi-peaked wave power spectra recorded by a deep-water buoy deployed in the Bay of Bengal, Indian Ocean by the National Institute of Ocean Technology were simulated using this theoretical...
An overview of recent technologies on wave and current measurement in coastal and marine applications
January 2010
The coastal ocean is the most important zone for the maritime countries for recreation, mineral and energy exploitation, weather forecasting and national security. Understanding of coastal and oceanic processes is mostly based on field measurements and laboratory experiments. Most coastal processes occur over relatively long time spans and have large spatial extents. They also involve or are impacted by a...
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