نتایج جستجو برای: plant community composition and dynamics

تعداد نتایج: 17034130  

2018
Kathryn M. Docherty

The phyllosphere hosts a variety of microorganisms, including Background bacteria, which can play a positive role in the success of the host plant. Bacterial communities in the phylloplane are influenced by both biotic and abiotic factors, including host plant surface topography and chemistry, which change in concert with microbial communities as the plant leaves develop and age. : We examined ...

2017
Heather C Manching Kara Carlson Sean Kosowsky C Tyler Smitherman Ann E Stapleton

Background: The phyllosphere hosts a variety of microorganisms, including bacteria, which can play a positive role in the success of the host plant. Bacterial communities in the phylloplane are influenced by both biotic and abiotic factors, including host plant surface topography and chemistry, which change in concert with microbial communities as the plant leaves develop and age. Methods: We e...

2017
Christopher Staley Abigail P. Ferrieri Malak M. Tfaily Yaya Cui Rosalie K. Chu Ping Wang Jared B. Shaw Charles K. Ansong Heather Brewer Angela D. Norbeck Meng Markillie Fernanda do Amaral Thalita Tuleski Tomás Pellizzaro Beverly Agtuca Richard Ferrieri Susannah G. Tringe Ljiljana Paša-Tolić Gary Stacey Michael J. Sadowsky

BACKGROUND The circadian clock regulates plant metabolic functions and is an important component in plant health and productivity. Rhizosphere bacteria play critical roles in plant growth, health, and development and are shaped primarily by soil communities. Using Illumina next-generation sequencing and high-resolution mass spectrometry, we characterized bacterial communities of wild-type (Col-...

2013
Yu Ting Wu Tesfaye Wubet Stefan Trogisch Sabine Both Thomas Scholten Helge Bruelheide François Buscot

Fungal diversity and community composition are mainly related to soil and vegetation factors. However, the relative contribution of the different drivers remains largely unexplored, especially in subtropical forest ecosystems. We studied the fungal diversity and community composition of soils sampled from 12 comparative study plots representing three forest age classes (Young: 10-40 yrs; Medium...

2015
Tao Zhang Rui Guo Song Gao Jixun Guo Wei Sun

Climate change has profound influences on plant community composition and ecosystem functions. However, its effects on plant community composition and biomass production are not well understood. A four-year field experiment was conducted to examine the effects of warming, nitrogen (N) addition, and their interactions on plant community composition and biomass production in a temperate meadow ec...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تبریز - دانشکده علوم ریاضی 1389

در این پایان نامه عملگرهای ترکیبی و ضربی را که بوسیله نگاشتهای عملگر مقدار روی فضاهای بوخنر (لورنتس بوخنر و پایا بازارایشی بوخنر ) تولید می شوند را موردمطالعه قرار داده، بسته بودن برد، فشردگی و طیف آنها را بررسی می نماییم. در ضمن این پایان نامه براساس مرجع زیر تنظیم شده است. s. c. arora, g. datt and s. verma, multiplication and composition operators on lorentz-bochner spaces, osaka j. math. 4...

2008
Arantzazu Luzuriaga

Question: How do different regeneration scenarios shape species composition at two stages of plant community establishment (emergence and net recruitment) in an early succession? Location: Northern Spain. Methods: In a recently ploughed field, we created eight regene­ ration scenarios with light, water and nitrogen availability (five replicates each). Seedlings of all species were monitored fro...

2013
D. Prati

Semi-natural grasslands, biodiversity hotspots in Central-Europe, suffer from the cessation of traditional land-use. Amount and intensity of these changes challenge current monitoring frameworks typically based on classic indicators such as selected target species or diversity indices. Indicators based on plant functional traits provide an interesting extension since they reflect ecological str...

Journal: :Ecology letters 2015
Albert Barberán Krista L McGuire Jeffrey A Wolf F Andrew Jones Stuart Joseph Wright Benjamin L Turner Adam Essene Stephen P Hubbell Brant C Faircloth Noah Fierer

The complexities of the relationships between plant and soil microbial communities remain unresolved. We determined the associations between plant aboveground and belowground (root) distributions and the communities of soil fungi and bacteria found across a diverse tropical forest plot. Soil microbial community composition was correlated with the taxonomic and phylogenetic structure of the abov...

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