نتایج جستجو برای: forbs

تعداد نتایج: 758  

2015
Ute Petersen Johannes Isselstein

In biodiversity experiments based on seeded experimental communities, species richness and species composition exert a strong influence on canopy structure and can lead to an improved use of aboveground resources. In this study, we want to explore whether these findings are applicable to agriculturally managed permanent grassland. Vertical layered profiles of biomass, leaf area (LA) and light i...

Journal: :The New phytologist 2006
Giuliano Bonanomi Maria Grazia Sicurezza Silvia Caporaso Assunta Esposito Stefano Mazzoleni

Allelopathic effects of plant litter have been extensively studied, but less attention has been given to the dynamics of phytotoxicity during the decomposition processes. Decomposition experiments were carried out on above- and below-ground plant materials of 25 species of different functional groups (nitrogen fixer, forbs, woody and grasses-sedges) in aerobic and anaerobic conditions. The phyt...

2011
C. S. Boyd T. J. Svejcar

Restoration treatments are based on the largely untested notion that desired recovery of plant communities following disturbance wouldn’t occur in the absence of active intervention. We identified rate of short-term (10 year) floristic changes following removal of plant functional groups in Wyoming big sagebrush plant communities in 1999e2005 and 2008. Treatments imposed on 6 6 m plots were: 1)...

2016
Xi Luo Susan J. Mazer Hui Guo Nan Zhang Jacob Weiner Shuijin Hu

In terrestrial ecosystems, atmospheric nitrogen (N) deposition has greatly increased N availability relative to other elements, particularly phosphorus (P). Alterations in the availability of N relative to P can affect plant growth rate and functional traits, as well as resource allocation to above- versus belowground biomass (MA and MB). Biomass allocation among individual plants is broadly si...

2002
Philip A. Fay Jonathan D. Carlisle Brett T. Danner Michelle S. Lett James K. McCarron Catherine Stewart Alan K. Knapp John M. Blair Scott L. Collins

Although the potential for increased temperature is the primary and best-studied aspect of anthropogenic climate change, altered rainfall patterns, increased storm intensity, and more severe droughts are also predicted in most climate-change scenarios. We altered experimentally the rainfall regime in a native tallgrass prairie in northeastern Kansas and assessed leaf-level physiological activit...

Journal: :Science of The Total Environment 2021

Finding the best management strategies to restore grassland diversity and achieve a compromise between agricultural use biodiversity protection is global challenge. This paper reports novel data relating impacts of 19 years restoration managements predicted increase botanical within reseeded upland temperate common in less favoured areas Europe. The treatments imposed were: continuous sheep gra...

Aboveground net primary production (ANPP) is one of the crucially characteristics of rangeland ecosystems and it is importance in the cycle of materials and energy in these ecosystems. The aim of present study was investigate the ANPP of life forms (grasses, forbs, and shrubs), and total ANPP; then modeling of life forms and total ANPP by using precipitation and temperature in Siahpoush and Gan...

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