نتایج جستجو برای: plant succession

تعداد نتایج: 405037  

2004
Timothy D. Schowalter

This paper provides a conceptual framework for increasing our understanding of the relationships between plant resistance to insect herbivores and insect herbivore influences on ecosystem nutrient cycling and succession. For a given plant species, adequate nutrient/light availability favors establishment and productivity; small insect herbivore populations regulated by plant biochemistry stimul...

2017
Quanchao Zeng Yang Liu Li Xiao Yimei Huang

Overgrazing is a severe problem in several regions in Northwestern China and has caused serious land degradation. Secondary natural succession plays an important role in the accumulation of soil carbon and nitrogen contents. Estimating the effects of grazing exclusion on soil quality and plant diversity will improve our understanding of the succession process after overgrazing and promote judic...

Journal: :Journal American Society of Mining and Reclamation 1993

2015
Aaron S. David Phoebe L. Zarnetske Sally D. Hacker Peter Ruggiero Reuben G. Biel Eric W. Seabloom

Invasive species can alter the succession of ecological communities because they are often adapted to the disturbed conditions that initiate succession. The extent to which this occurs may depend on how widely they are distributed across environmental gradients and how long they persist over the course of succession. We focus on plant communities of the USA Pacific Northwest coastal dunes, wher...

2000
E. WILLIAM SCHWEIGER JAMES E. DIFFENDORFER ROBERT D. HOLT RAYMOND PIEROTTI MICHAEL S. GAINES

We compared the density and spatial distribution of four small mammal species (Microtus ochrogaster, Peromyscus maniculatus, Sigmodon hispidus, and P. leucopus) along with general measures of an old field plant community across two successional phases (1984–1986 and 1994–1996) of an experimental study of fragmentation in eastern Kansas. During the early phase the plant community was characteriz...

2016
Werner Ulrich Markus Klemens Zaplata Susanne Winter Wolfgang Schaaf Santiago Soliveres Nicholas J. Gotelli

31 Theory on plant succession predicts a temporal increase in the complexity of spatial 32 community structure and of competitive interactions: initially random occurrences of early 33 colonising species shift towards spatially and competitively structured plant associations in 34 late successional stages. Here we use long-term data on early plant succession in a German 35 post mining area to d...

2014
Jie Zhao Shengping Li Xunyang He Lu Liu Kelin Wang

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...

2016
Ian A. Dickie Angela M. Wakelin Laura Martinez-Garcia Sarah J. Richardson Jason M. Tylianakis

34 35 The role of pathogens, including oomycetes, in long-term ecosystem development has 36 remained largely unknown, despite hypotheses that pathogens drive primary succession, 37 determine mature ecosystem plant diversity, or dominate in retrogressive, nutrient-limited 38 ecosystems. Using DNA sequencing from roots, we investigated the frequency and host 39 relationships of oomycete communiti...

2006
J. T. A. VERHOEVEN M. B. SCHMITZ

A fertilization experiment was carried out in 3 mesotrophic fens to investigate whether plant growth in these systems is controlled by the availability of N, P or K. The fens are located in an area with high N inputs from precipitation. They are annually mown in the summer to prevent succession to woodland. Above-ground plant biomass increased significantly upon N fertilization in the two 'mid'...

اجتهادی, حمید, جنگجو, محمد, رفیعی, فهیمه,

Secondary succession after wildfire usually leads to vegetation types that can differ with the original vegetation in terms of forage productivity and community stability. Plant functional types (PFTs) can be used as ecological indices for assessing effects of disturbances on the natural plant communities. Accordingly, this research was aimed to identify, classify and analyze PFTs in three rang...

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