نتایج جستجو برای: natural succession

تعداد نتایج: 491902  

Journal: :Global journal of health science 2014
Mohamad Mehrtak Soodabeh Vatankhah Bahram Delgoshaei Arian Gholipour

BACKGROUND Succession planning promotes the culture of private ownership, staff loyalty to the organization and develops organizational commitment, and increases organizational stability. The study was conducted to examine the status of succession planning in the Iranian health system in order to highlight the key concepts, provide new insight, and attract the attention of senior managers of th...

Variation along the successional stage of a plant community is not limited to plant composition and diversity but also related to nutrient resources and plant species abundance distribution. Therefore, the use of models that consider the distribution of ecological niches in addition to the relative frequency of species in the distribution of species is also important. The object of current stud...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه سیستان و بلوچستان 1390

abstract the influence of cation?? and anion?? interactions on the strength and nature of n…h hydrogen bond has been investigated by quantum chemical calculations in s-triazine…3hf complex. ab initio calculations were performed at mp2/6-311++g(d,p) level of theory. the natural bond orbital (nbo) analysis and the bader’s quantum theory of atoms in molecules (aim) were also used to elucidate t...

Journal: :Annual review of phytopathology 2002
Gregory S Gilbert

Plant pathogens cause mortality and reduce fecundity of individual plants, drive host population dynamics, and affect the structure and composition of natural plant communities. Pathogens are responsible for both numerical changes in host populations and evolutionary changes through selection for resistant genotypes. Linking such ecological and evolutionary dynamics has been the focus of a grow...

Journal: :IOP conference series 2023

Abstract Since 1995, PT Freeport Indonesia has been building forest succession in its tailing area. The first vascular plants were ferns. spermatophyte species, especially grass, coming later. In 2005, grassland covered all permanent plots, except a few small trees from pioneer species. Family Fabaceae was one of the plant groups found area, with 12 Over 15 years later, area vanished, replaced ...

Journal: :Australasian Journal on Ageing 2015

2007
Mojca DUH Polona TOMINC Miroslav REBERNIK

In countries with a long history of entrepreneurship and market economy, significant research efforts have been devoted to family business succession. Such studies are rare in former communist countries, mainly because private enterprises were outlawed during the socialist economy era. Considering reports on the importance and complexity of succession issues, and taking into account the ageing ...

2013
Nguyen E. López-Lozano Karla B. Heidelberg William C. Nelson Felipe García-Oliva Luis E. Eguiarte Valeria Souza

Ecological succession is one of the most important concepts in ecology. However for microbial community succession, there is a lack of a solid theoretical framework regarding succession in microorganisms. This is in part due to microbial community complexity and plasticity but also because little is known about temporal patterns of microbial community shifts in different kinds of ecosystems, in...

Journal: :Concrete Journal 2010

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