نتایج جستجو برای: taxonomic groups
تعداد نتایج: 751952 فیلتر نتایج به سال:
The importance of analyzing the determinants of biodiversity and community composition by using multiple trophic levels is well recognized; however, relevant data are lacking. In the present study, we investigated variations in species diversity indices and community structures of the plankton taxonomic groups-zooplankton, rotifers, ciliates, and phytoplankton-under a range of local environment...
Phylogenetic profiling, a network inference method based on gene inheritance profiles, has been widely used to construct functional gene networks in microbes. However, its utility for network inference in higher eukaryotes has been limited. An improved algorithm with an in-depth understanding of pathway evolution may overcome this limitation. In this study, we investigated the effects of taxono...
Many supraspecific zoantharian names have long and complicated histories. The present list is provided to advise researchers on the current state of supraspecific nomenclature of the zoantharians, particularly given the recent attention paid to the taxonomy, phylogeny, and biodiversity of this order. At the same time, several taxonomic issues brought to light by recent research are resolved. De...
Background: As children spend roughly 30 hours per week at school, the associated benefits of physical activity (PA) can be developed within physical education (PE) lessons, break times and after school activities. Therefore, the main aims of this investigation were to (i) investigate the differences between males and females PA levels across the tarmac area during lunch time, (ii) investigate ...
بخش سیناروییدس از جنس کوزینیا (تیره کاسنی ( مورد بازنگری تاکسونومیکی قرار می گیرد.تاکسون های زیر به عنوان تاکسونهای جدید شرح داده می شوند. cousinia shiraziana, c. denaensis, c. lurestanica, c. pasagadensis, c. sahandica, c. gaharensis, c. silvanica, c. arakensis, c. kurdestanica, c. ardalensis. تاکسون های زیر یکبار دیگر در مقایسه با آخرین مطالعه گروه به عنوان تاکسون های مستقل شناخته می شوند. c...
Ecologists have been largely interested in the description and understanding of the power scaling relationships between body size and abundance of organisms. Many studies have focused on estimating the exponents of these functions across taxonomic groups and spatial scales, to draw inferences about the processes underlying this pattern. The exponents of these functions usually approximate -3/4 ...
In a recent paper Warwick & Clarke (1995: Mar Ecol Prog Ser 129:301-305) introduced 2 new measures of community diversity, A and A' These measures dlffer from more conventional d~ver sity indices by incorporating the taxonomic relatedness of species into their calculation. In this paper we compare temporal trends in A and A' with more conventional diversity measures for the demersal fish commun...
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