Abstract Limestones (CaCO 3 ) have been an important source for masonry and mortars throughout approx. 10,000 years of human history. They are often composed calcitic shells minute marine algae, known as calcareous nannofossils. The 0.25–30-µm large skeletons these primary producers well documented from various archaeological materials including building stones masonry. Surprisingly, tiny micro...

Regression analysis of the relationship between the size of interphase and mitotic digestive cells of green hydra, and the numbers and total volume of the symbiotic Chlorella algae they contain showed a partial correlation only, suggesting that numbers of algae per cell are not regulated by limiting them to a specific proportion of the host cell, and that the variation observed in numbers of al...

One hundred and forty-four published successions of shallow-water carbonates, deposited between the Palaeocene Miocene, from Levant to Himalayas, have been re-analysed using a standardised approach investigate distribution carbonate facies carbonate-producing organisms. Large benthic foraminifera were found be volumetrically most important group producers during whole period, with peak in abund...

Widespread mortality of reef-building coral substantially reduces the capacity for reef growth and makes available extensive bare substrate areas that in absence recovery will be eroded by a variety external internal bioeroders. Here, we analyze rates erosion on six different types carbonate substrates under situ conditions over 2-yr period. We measure vertical changes surface elevation four sp...

Although entomopathogenic fungi (EPF) are best known for their ability to protect crops against insect pests, they may have other beneficial effects on their host plants. These effects, which include promoting plant growth and conferring resistance against abiotic stresses, have been examined in recent years to acquire a better understanding of them. The primary purposes of the present study we...

Bioerosion is the destruction of hard substrates resulting from biological activity, and plays a relevant role in ecological interactions coastal dynamics processes. Several organisms have evolved structures behaviors allowing them to perforate biotic abiotic surfaces, transforming surfaces into particles, contributing significantly sediment production marine environment. Due large geographical...

Abstract The Los Guájares valley is located about 35 km south of Granada in the Internal Zones Betic Cordillera. Miocene deposits this area consist six sedimentary units separated by unconformities, which are exposed small and laterally discontinuous outcrops overlying metamorphic rocks Alpujárride Complex. lowest unit comprises upper Serravallian marls with planktonic foraminifera filling nept...

Cyprus is one of the few areas Mediterranean where lower and upper Miocene coral-reefs occur in close proximity thus well suited to investigate how environmental geological changes affected reefs their associated shallow-marine facies. The prevailing conditions Terra Member Koronia are reconstructed here, using detailed microfacies comparisons skeletal, foraminiferal calcareous algal assemblage...

effects of different soil moisture regimes and p application on available and inorganic p forms were studied in four paddy soils, north of iran. a factorial experiment in a completely randomized design with two replications was performed in a laboratory study. factors of soil at four levels (two acid and two alkaline-calcareous soils), soil moisture contents at three different levels (air-dry, ...