نتایج جستجو برای: succession
تعداد نتایج: 11436 فیلتر نتایج به سال:
This study examined “new CEO dismissal”, i.e., a new CEO is dismissed within three years after succession. Based upon agency theory and human capital theory, we argue that new CEO dismissal may represent a correction to an inappropriate CEO selection and accordingly, succession contexts that tend to lead to an inappropriate CEO selection will increase the likelihood of new CEO dismissal. With a...
Volcanic eruptions are major natural disturbances with varied and complex consequences. Recent studies of how plants colonize newly created volcanic surfaces already have begun to clarify our understanding of succession. Because volcanoes create disturbance mosaics, it is imperative that we more fully understand the biotic responses. The 1883 eruption of Krakatau captured the world’s imaginatio...
We begin a systematic study of the enumerative combinatorics of mixed succession rules, which are succession rules such that, in the associated generating tree, the nodes are allowed to produce their sons at several different levels according to different production rules. Here we deal with a specific case, namely that of two different production rules whose rule operators commute. In this situ...
In order to evaluate the dynamics of carbon storage during forest succession and explore the significance of water relations and soil stability in forest environments, a study was conducted in 2011. This study investigated the dynamics of soil organic carbon (SOC) fractions and its protection through aggregation along the successional forests. An experiment in South China examined pine forest (...
I differ with Cheng’s appraisal of certain events and think that we need a more sophisticated analysis of the twin policy goals he identifies and embraces–self-determination and global order– before they can offer real policy guidance. But State Succession and Commercial Obligations stands out as a rigorously researched, original, and insightful effort to understand this quite confused and opaq...
Long-term assessment of ecosystem restoration projects is complex because of ecological processes such as succession, particularly in highly dynamic ecosystems such as estuaries. Restoration of intertidal flats and marshes on formerly embanked land, often called managed coastal realignment (MR), became popular in estuarine management. In our study, biophysical and monetary data were collected t...
Karst ecosystems are fragile and are in many regions degraded by anthropogenic activities. Current management of degraded karst areas focuses on aboveground vegetation succession or recovery and aims at establishing a forest ecosystem. Whether progressive succession of vegetation in karst areas is accompanied by establishment of soil biota is poorly understood. In the present study, soil microb...
Accelerated by global climate changing, retreating glaciers leave behind soil chronosequences of primary succession. Current knowledge of primary succession is mainly from studies of vegetation dynamics, whereas information about belowground microbes remains unclear. Here, we combined shifts in community assembly processes with microbial primary succession to better understand mechanisms govern...
Insect succession patterns have been studied largely around the world by using thepredictable sequential arrival pattern of different insect species that become attracted to thedecomposing carcass at various stages of the decay. Currently, in some countries there areinsufficient studies detailing the seasonal variation of insect succession patterns ondecomposing remains. To date...
Lianas (woody vines) can have profound effects on tree recruitment, growth, survival, and diversity in tropical forests. However, the dynamics of liana colonization soon after land abandonment are poorly understood, and thus it is unknown whether lianas alter tree regeneration early in succession. We examined the liana community in 43 forests that ranged from 1 to 31 yr old in central Panama to...
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