Human Appropriation of the Products of Photosynthesis

نویسندگان

  • Peter M. Vitousek
  • Paul R. Ehrlich
  • Anne H. Ehrlich
  • Pamela A. Matson
چکیده

برای دانلود رایگان متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Harvesting the biosphere: the human impact.

The human species has evolved to dominate the biosphere: global anthropomass is now an order of magnitude greater than the mass of all wild terrestrial mammals. As a result, our dependence on harvesting the products of photosynthesis for food, animal feed, raw materials, and energy has grown to make substantial global impacts. During the past two millennia these harvests, and changes of land us...

متن کامل

Appropriation Based -Syllabus and Advanced EFL Learners’ Speaking Skill: The Case of Chunks-on-Card Activities

The impetus for conducting the present study came from Thornbury's (2005) approach to teach speaking in which he claimed that awareness-raising techniques, along with appropriation strategies, facilitate the process of teaching and learning speaking. Therefore, the present study attempted to explore the impact of the appropriation-based syllabus to teach speaking by using chunks-on-card...

متن کامل

“Appropriation Art” and Recognition of the Legal Status of the Author

It is often thought that appropriation art doesn’t give rise to its traditional concept and place. Because there are secondary works in the world of visual arts that are taken from the original works. From a legal point of view despite their uniqueness, definite and certain material existence of these works, the situa­tion of the author is not very clear. “How can be explained the authorship re...

متن کامل

Diurnal Variations of Gas Exchange Characteristics in Leaves of Anise Hyssop (Agastache foeniculum) under Normal, Drought Stress and Recovery Conditions

 Net photosynthesis rate (Pn), stomatal conductance (gs) and transpiration rate (E) of anise hyssop were measured during the four cloudless days, in reference to diurnal fluctuations of leaf temperature (Tleaf), leaf vapor pressure deficit (VPD leaf) and photosynthetic photon flux density (PPFD) in well watered (WW), stressed (S) and recovered (R) plants. An analysis of measured data showed tha...

متن کامل

Effect of Drought Stress on Chemical Constituents, Photosynthesis and Antioxidant Properties of Rosmarinus officinalis Essential Oil

This research was carried out to assess the effect of drought stress on head branch dry weight, photosynthesis, essential oil yield and radical scavenging of rosemary (Rosmarinus officinalis L.) in Islamic Azad University, Shoushtar branch, Iran during 2010-2011.The experiments were carried out using complete randomized block design with four replications and drought stress levels included cont...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2007