نتایج جستجو برای: علف نیphragmites australis

تعداد نتایج: 6578  

Journal: :Conservation biology : the journal of the Society for Conservation Biology 2008
Carl Hershner Kirk J Havens

Climate change is projected to increase stress for many coastal plant communities. Along large portions of the North American coast, habitat degradation from anthropogenic changes to the environment already threaten the community structure of tidal marshes and submerged aquatic grass beds. The potential loss of ecological services historically provided by these communities has been a long-stand...

2007
Bruce A. Wilking Mark J. McCaughrean Michael G. Burton Timothy Giblin John T. Rayner

Preliminary analysis is presented for J, H, and K 0 images of the Corona Australis cloud core. Color-color and color-magnitude diagrams reveal relatively few new cluster members. We conclude that the R Cr A infrared cluster consists of only about 30 members and its size reeects the available reservoir of molecular gas.

Journal: :Frontiers in plant science 2016
Gareth D. Holmes Nathan E. Hall Anthony R. Gendall Paul I. Boon Elizabeth A. James

Common Reed (Phragmites australis) is a frequent component of inland and coastal wetlands in temperate zones worldwide. Ongoing environmental changes have resulted in the decline of this species in many areas and invasive expansion in others. In the Gippsland Lakes coastal waterway system in south-eastern Australia, increasing salinity is thought to have contributed to the loss of fringing P. a...

2012
CONRAD J. HOSKIN

In Australia the frog family Microhylidae is largely restricted to tropical rainforests of the Wet Tropics region in the northeast of the country, but in that region the family is diverse. Only one species, Cophixalus ornatus, is widespread in the Wet Tropics but there has been suspicion that it may comprise multiple species. A recent study (Hoskin et al. 2011) assessed genetic and phenotypic v...

Journal: :Phytomedicine : international journal of phytotherapy and phytopharmacology 2005
A G Tempone S E Treiger Borborema H F de Andrade N C de Amorim Gualda A Yogi C Salerno Carvalho D Bachiega F N Lupo S V Bonotto D C H Fischer

Leishmaniasis and Chagas disease afflict the poorest countries in the world. The Brazilian flora represents a rich source for the screening of potential antiparasitic compounds. In this work, we tested the total alkaloid and ethanol extracts of nine different plants from Brazilian families which produce isoquinoline alkaloids, to determine their in vitro antiparasitic effect against L. chagasi ...

2012
Kimberly L. Dibble Laura A. Meyerson

Roads, bridges, and dikes constructed across salt marshes can restrict tidal flow, degrade habitat quality for nekton, and facilitate invasion by non-native plants including Phragmites australis. Introduced P. australis contributes to marsh accretion and eliminates marsh surface pools thereby adversely affecting fish by reducing access to intertidal habitats essential for feeding, reproduction,...

Journal: :Sustainability 2022

In southern Taiwan, rivers sporadically cease to flow and dry up in winter. The exposed riverbeds are very vulnerable wind erosion. strong northeast monsoon often induces serious estuarine sand drift fugitive dust, which cause damages agricultural crops, human health infrastructures. Giant reed (Arundo formosana), common (Phragmite australis) the wild sugarcane (Saccharum spontaneum) pioneer gr...

Journal: :محیط زیست طبیعی 0
پریسا تابان کارشناسی ارشد محیط زیست، دانشگاه آزاد اسلامی واحد علوم و تحقیقات تهران کوروش کاوسی کارشناس ارشد گیاه شناسی، دانشگاه آزاد اسلامی واحد علوم و تحقیقات تهران اسماعیل کهرم استادیار دانشگاه آزاد اسلامی واحد علوم و تحقیقات تهران حمید گشتاسب استادیار دانشگاه محیط زیست کرج

we studied cu concentration on part of aras riparian vegetation. cu was selected as an index metal due to polluting the aras river through agarak copper mines drainage. results of cu concentration in indicator plant have been examined using spss16. considering the situation of the copper mines as well as the habitat of the indicator plant, two stations before and after the exit of the industria...

2015

institutions is anything to judge by (Clarke, 1980), then Ha rlingen supervision. The answer depends on what Price binary options Terra Bella thinks the other party would do. In some studies research subjects are told that they can expect to select freely from among several available consumer Discount binary options indicator Harlingen.

2015
Chun Wang Derrick Y. F. Lai Chuan Tong Weiqi Wang Jiafang Huang Chongsheng Zeng Xuhui Zhou

Understanding the functional relationship between greenhouse gas fluxes and environmental variables is crucial for predicting the impacts of wetlands on future climate change in response to various perturbations. We examined the relationships between methane (CH4) emission and temperature in two marsh stands dominated by the Phragmites australis and Cyperus malaccensis, respectively, in a subtr...

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