نتایج جستجو برای: گیاه نی phragmites australis

تعداد نتایج: 37060  

Journal: :Molecular ecology 2003
K Saltonstall

Over the past century, the spread of the common reed (Phragmites australis) has had a dramatic impact on wetland communities across North America. Although native populations of Phragmites persist, introduced invasive populations have dominated many sites and it is not clear if the two types can interbreed. This study compares patterns of differentiation in 10 microsatellite loci among North Am...

فرزین صیّاد قربانی شیرین

فلزّات سنگین از عوامل مهّم آلاینده محیط زیستی به شمار می روند که از طریق مناطق ساحلی و رودخانه ها وارد دریا شده و از طریق زنجیره غذایی در بدن آبزیان تجمّع میابند (عبادتی و همکاران، 1384). این عناصر در نتیجه عوامل طبیعی و انسانی مخصوصاً فعّالیّت های صنعتی، کشاورزی و فاضلاب های شهری وارد محیط می شوند و از طریق زنجیره غذایی در بدن آبزیان تجمّع میابند (اسماعیلی و همکاران، 1388). فعّالیّت های</strong...

2012
Xuehong Wang Junbao Yu Di Zhou Hongfang Dong Yunzhao Li Qianxin Lin Bo Guan Yongli Wang

In this study, we compared ecological characteristics of wetland vegetation in a series of restoration projects that were carried out in the wetlands of Yellow River Delta. The investigated characteristics include plant composition structure, species diversity and community similarity in three kinds of Phragmites australis wetlands, i.e. restored P. australis wetlands (R1, R2, R3 and R4: restor...

2007
Bruce W. Pengra Carol A. Johnston Thomas R. Loveland

Mapping tools are needed to document the location and extent of Phragmites australis, a tall grass that invades coastal marshes throughout North America, displacing native plant species and degrading wetland habitat. Mapping Phragmites is particularly challenging in the freshwater Great Lakes coastal wetlands due to dynamic lake levels and vegetation diversity. We tested the applicability of Hy...

2008
Maria Sahuquillo Maria Rosa Miracle Maria Rieradevall

Macroinvertebrates assemblages on reed beds, with special attention to Chironomidae (Diptera), in Mediterranean shallow lakes Macroinvertebrates associated to reed-beds (Phragmites australis) in six shallow natural water bodies along the 220 km of coast of the Comunidad Valenciana (Spain) were studied. These sites were selected to reflect different trophic states, but also, and due to the natur...

2007
RYAN S. KING WILLIAM V. DELUCA PETER P. MARRA

The invasion of North American tidal marshes by Phragmites australis, or common reed, is a large-scale ecological problem that has been primarily studied at small spatial scales. Previous local-scale studies have provided evidence that the expansion of Phragmites is facilitated by disturbance and increased nitrogen (N) associated with agricultural and urban-suburban (developed) land uses along ...

Journal: :Water research 2007
Cristina S C Calheiros António O S S Rangel Paula M L Castro

Wastewaters from leather processing are very complex and lead to water pollution if discharged untreated, especially due to its high organic loading. In this study the survival of different plant species in subsurface horizontal flow constructed wetlands receiving tannery wastewater was investigated. Five pilot units were vegetated with Canna indica, Typha latifolia, Phragmites australis, Steno...

2015
Marie-Andrée Tougas-Tellier Jean Morin Daniel Hatin Claude Lavoie

Climate change will likely affect flooding regimes, which have a large influence on the functioning of freshwater riparian wetlands. Low water levels predicted for several fluvial systems make wetlands especially vulnerable to the spread of invaders, such as the common reed (Phragmites australis), one of the most invasive species in North America. We developed a model to map the distribution of...

2010
Christine Holdredge Mark D. Bertness Brian R. Silliman

Many mechanisms of invasive species success have been elucidated, but those driving cryptic invasions of non-native genotypes remain least understood. In one of the most successful cryptic plant invasions in North America, we investigate the mechanisms underlying the displacement of native Phragmites australis by its Eurasian counterpart. Since invasive Phragmites ’ populations have been especi...

Journal: :رستنیها 0
یوبرت قوستا دانشیار بیماری شناسی گیاهی، گروه گیاه پزشکی، دانشگاه ارومیه، ارومیه، ایران ([email protected]) مسعود ابرین بنا استادیار بیماری شناسی گیاهی، گروه گیاه پزشکی، دانشگاه ارومیه، ارومیه، ایران

during the visits of common reed [phragmites australis (cav.) trin. ex steud] in different locations of west azerbaijan province during 2015–16, symptoms of fungal infections was frequently observed. among the isolated and studied fungi, deightoniella arundinacea (corda) s. hughes was commonly observed. based on available literatures, this species was found new to mycobiota of iran.

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