نتایج جستجو برای: natural succession

تعداد نتایج: 491902  

Journal: :Environmental monitoring and assessment 2009
WenJun Zhang Wu Wei

Strong spatial correlation may exist in the spatial succession of biological communities, and the spatial succession can be mathematically described. It was confirmed by our study on spatial succession of both plant and arthropod communities along a linear transect of natural grassland. Both auto-correlation and cross-correlation analyses revealed that the succession of plant and arthropod comm...

2014
Silvana Hudjetz Gottfried Lennartz Klara Krämer Martina Roß-Nickoll André Gergs Thomas G. Preuss

The degradation of natural and semi-natural landscapes has become a matter of global concern. In Germany, semi-natural grasslands belong to the most species-rich habitat types but have suffered heavily from changes in land use. After abandonment, the course of succession at a specific site is often difficult to predict because many processes interact. In order to support decision making when ma...

2005
Scot Duncan Virginia E. Duncan

Forest succession on degraded tropical lands often is slowed by impoverished seed banks and low rates of seed dispersal. Within degraded landscapes, remnant forests are potential seed sources that could enhance nearby forest succession. The spatial extent that forest can influence succession, however, remains largely unstudied. In abandoned agricultural lands in Kibale National Park, Uganda, re...

2010
Lori J. Kayes Paul D. Anderson Klaus J. Puettmann

Question: How does vegetation develop during the initial period following severe wildfire in managed forests? Location: Southwestern Oregon, USA. Methods: In severely burned plantations, dynamics of (1) shrub, herbaceous, and cryptogam richness; (2) cover; (3) topographic, overstory, and site influences were characterized on two contrasting aspects 2 to 4 years following fire. Analysis of varia...

Journal: :PROCEEDINGS OF CIVIL ENGINEERING IN THE OCEAN 2002

Journal: :Environmental monitoring and assessment 2014
Zhongyu Sun Hai Ren Val Schaefer Qinfeng Guo Jun Wang

A large area of plantations has been established worldwide and especially in China. Evaluating the restoration status of these plantations is essential for their long-term management. Based on our previous work, we used an ecological memory (EM) approach to evaluate four 26-year-old plantations that represent four common kinds of plantations in subtropical China, i.e., mixed broad-leaved planta...

2004

Vegetation succession was studied for 12 years on an abandoned nutrient-poor small field surrounded by a strip of natural grassland. No fertilizers or herbicides were applied. Few weeds or annuals were present during this period. Only two plants, i.e. Agrostis capillaris and Festuca rubra , dominated during the 12 years. At two spatial scales (0.04 and 0.4 m) a dramatic increase in species rich...

Journal: :Family process 2011
Alexandra Solomon Douglas Breunlin Katherine Panattoni Mara Gustafson David Ransburg Carol Ryan Thomas Hammerman Jean Terrien

This qualitative study used a grounded theory methodology to analyze life-story interviews obtained from 10 family business owners regarding their experiences in their businesses with the goal of understanding the complexities of family business succession. The grounded theory that emerged from this study is best understood as a potential web of constraints that can bear on the succession proce...

2011
Axel Schwerk Jan Szyszko

Degraded areas constitute challenging tasks with respect to sustainable management of natural resources. Maintaining or even establishing certain successional stages seems to be particularly important. This paper presents a model of the succession in five different types of degraded areas in Poland based on changes in the carabid fauna. Mean Individual Biomass of Carabidae (MIB) was used as a n...

2013
Yuelin Li Fangfang Yang Yangxu Ou Deqiang Zhang Juxiu Liu Guowei Chu Yaru Zhang Dennis Otieno Guoyi Zhou

BACKGROUND Natural forest succession often affects soil physical and chemical properties. Selected physical and chemical soil properties were studied in an old-growth forest across a forest successional series in Dinghushan Nature Reserve, Southern China. METHODOLOGY/PRINCIPAL FINDINGS The aim was to assess the effects of forest succession change on soil properties. Soil samples (0-20 cm dept...

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