In this study we present a comparative quantification of CaCO3 production rates by rhodolith-forming coralline red algal communities situated in high polar latitudes and assess which environmental parameters control these production rates. The present rhodoliths act as ecosystem engineers, and their carbonate skeletons provide an important ecological niche to a variety of benthic organisms. The...

We continue our study of hyperinvariant subspaces for rationally cyclic subnormal operators. We establish a connection between hyperinvariant subspaces and weak-star continuous point evaluations on the commutant. Introduction. Let A be a compact subset of the complex plane C and let R(K) denote the algebra of rational functions with poles off K. For a positive measure p with support in K let R2...

physicochemical and mechanical properties of wheat grains can have a great impact on the quality of the final products (bread). therefore, correct selection of wheat cultivar for specific applications seems to be crucial. in this study, the differences in the physicochemical and mechanical properties (under compression and impact loadings) of ten iranian wheat cultivars (azar2, alamut, bam, bah...

Forests contribute significantly to terrestrial biodiversity conservation. Monitoring of tree species diversity is vital due climate change factors. Remote sensing imagery a means data collection for predicting species. Since various sensors have different spectral and spatial resolutions, it worth comparing them ascertain which could influence the accuracy prediction diversity. Hence, this stu...

and Applied Analysis 3 disease. From this point, we say the stochastic model is more realistic than the deterministic model. The rest of this paper is organized as follows. In Section 2, we show that there is a unique nonnegative solution of system 1.3 . In Section 3, we show that there is a stationary distribution under small white noise. While in Section 4, we consider the situation when the ...

Ying Xia Li, Guang Ce Wang*, Jian Feng Niu, Zheng Quan Gao & Chang Sheng Chen School of Life Science and Technology, Nanyang Normal University, Nanyang 473 061, China Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, Nanhai Road 7, Qingdao 266 071, China. Nation Deep Sea Center of State Oceanic Administration, People’s Republic of China, Qingda...

while the hydrological balance of forest ecosystems has often been studied, quantitative studies on the seasonal variability of rainfall interception (i) and canopy storage capacity (s) by individual trees are less frequently reported. hence, the effects of the seasonal variation in i and s by individual persian oak trees (quercus brantii var. persica) in the zagros forests of iran were studied...