Brown algae Cystoseira sp. and to gain additional information on the environmental conditions of the area seawater samples were collected from six sampling stations along the Turkish coast of the Aegean Sea. Concentrations of Cd, Pb, Cu, Zn, Mn and Fe were measured for both algae and seawater samples. The heavy metal concentrations detected in algae showed significant differences among all stat...

The intensity of human-induced impacts on the distribution and diversity of macroinvertebrates and water quality of Gbako River, North Central, Nigeria, was evaluated monthly for 6 months using modified kick sampling techniques. Four study stations were selected along the river course (upper reaches of less human impacts through mid-reaches with relative high human impacts to lower reaches of l...

There is increasing recognition that protozoa is very useful in monitoring and evaluating water ecological healthy and quality. In order to study the relationship between structure and function of protozoan communities and water qualities, six sampling stations were set on Lake Donghu, a hypereutrophic subtropical Chinese lake. Microbial communities and protists sampling from the six stations w...

the healthy condition of the taleghan river in upstream of the taleghan dam was studied in order to better understanding the role of benthic invertebrate bio-purification faced to waste water inflows to the river in several parts. sampling was started from the fall of 2005 and continued to the winter of 2006. in this way, five stations were selected using a pre-sampling strategy based on simila...

A new, nonparametric approach is proposed for global estimation of the spatial covariance structure of a random function X(z) observed repeatedly at a finite number of sampling stations zi' i=l, 2, ... ,n, in the plane. The true covariance structure is assumed to be neither isotropic nor stationary. Using a new variant of multidimensional scaling, termed scaled-metric scaling, one may compute a...

A major impediment to understanding the seemingly random occurrence of ciguatera toxicity is uncertainty regarding the field ecology of benthic dinoflagellates that introduce toxins into the coral reef food web. Although broad generalizations have been made, past studies have often yielded contradictory results, particularly between ecological patterns documented in the Pacific versus the Carib...

Winter bait stations are becoming a commonly used technique for multispecies inventory and monitoring but a technical evaluation of their effectiveness is lacking. Bait stations have three components: carcass attractant, remote camera, and hair snare. Our 22,975 km2 mountainous study area was stratified with a 5 × 5 km sampling grid centered on northern Idaho and including portions of Washingto...

Environmental monitoring typically falls into one of two broad categories. Targeted designs, utilizing fixed stations, focus on describing and quantifying impacts, tracking trends, and assessing compliance with regulatory guidelines or limits. Probabilistic designs, in contrast, draw sampling stations at random from an area or region, and the stations are used to describe conditions in the regi...

Studies of temporal and spatial changes in phytoplankton biomass and turbidity provide essential information on coral reef ecosystem function and health. Fluctuation of phytoplankton biomass responds to several factors including nutrient inputs, both anthropogenic and natural, while turbidity is mostly affected by sediment resuspension or transport from terrestrial systems. These parameters can...

In 7 different region which represent most used harbors, ports and fishing shelters in the Sea of Marmara and Black Sea in Turkey coasts. Ecological Quality Status was assesed by sampling soft-bottom macrozoobenthos from 22 stations in 2014.