the usage and production of polychlorinated biphenyls (pcbs) was banned in argentina in2002, approximately twenty to thirty years later than in other countries. a total of 29 sediment samples (upto 14 m deep) were analyzed for a mix of seven individual pcbs in a time series for over more than one year in twelve selected locations, including harbors, recreational docks and several industrialized...

the introduction of acacia saligna in the north nile delta of egypt is causing harmful impacts on the plant diversity. thirty stands were established in both invaded and non-invaded areas. the species abundance and diversity were determined. soil samples were collected and analyzed. the correlation between vegetation and soil variables was investigated. the allelopathic potential of water and m...

since heavy metals are considered as one of the major pollutants threatening, the main goal of this study was to bring out the concentrations of pb, zn and mn in the surface sediments off bushehr in the persian gulf. for this purpose, after collection of samples, the concentrations of the three metals in surface sediments were measured through the atomic absorption. the results were compared wi...

in the present paper various transects perpendicular to iranian makran coasts (chabahar-gawater) were studied using satellite image processing, field observations, sandy shore profiling and grain size analysis to evaluate sedimentology and geomorphology of the area. data revealed that the study area includes exposed rocky shores (52%), sandy shores (40%), and mud flats (8%) sheltered in estuari...

Conflicts in coastal zones arise as a result of the variance between divergent interests, within limited and dynamic socio-spatial and ecological dimensions, with little effort at critical consensus. Coastal zones worldwide exhibit three classical internal trademarks – high pressures for development, management weaknesses to protect coastal ecosystems and the deterioration of environmental cond...

Given incontrovertible evidence that humans are the most powerful agents of environmental change on the planet, research has begun to acknowledge and integrate human presence and activity into updated descriptions of the world’s biomes as “anthromes”. Thus far, a classification system for anthromes is limited to the terrestrial biosphere. Here, I present a case for the consideration and validit...

Approved for public release; distribution is unlimited. 1. Purpose. The purpose of this manual is to provide guidance in enviromental engineering for coastal shore protection projects. 2. Applicability. This manual applies to all field operating activities that have responsibility for environmental impact studies related to coastal shore protection projects. 3. Discussion. This manual summarize...

The intensity and magnitude of change that characterize coastal areas now demand the implementation of collective processes and tools to enhance coastal zone knowledge and management. Our hypothesis is that Coastal Spatial Data Infrastructures (CSDI) can contribute to Integrated Coastal Zone Management (ICZM) through a combination of technologies, policies and institutional arrangements to impr...

There has been a significant investment in research to define exposures and potential hazards of pharmaceuticals in freshwater and terrestrial ecosystems. A substantial number of integrated environmental risk assessments have been developed in Europe, North America and many other regions for these situations. In contrast, comparatively few empirical studies have been conducted for human and vet...

in this paper the telemac-3d model has been hired to simulate and study the high waves’ interaction with coastal structures. therefore a special arrangement of telemac-3d has been prepared in this study to simulate wave generation, coastal processes, wave set-up and overtopping over coastal structures. experimental data has been used to verify this arrangement of the model. thereafter, the mode...