Dersleri yüzünden oldukça stresli bir ruh haline sikiş hikayeleri bürünüp özel matematik dersinden önce rahatlayabilmek için amatör pornolar kendisini yatak odasına kapatan genç adam telefonundan porno resimleri açtığı porno filmini keyifle seyir ederek yatağını mobil porno okşar ruh dinlendirici olduğunu iddia ettikleri özel sex resim bir masaj salonunda çalışan genç masör hem sağlık hem de huzur sikiş için gelip masaj yaptıracak olan kadını gördüğünde porn nutku tutulur tüm gün boyu seksi lezbiyenleri sikiş dikizleyerek onları en savunmasız anlarında fotoğraflayan azılı erkek lavaboya geçerek fotoğraflara bakıp koca yarağını keyifle okşamaya başlar
Carbon Stocks And Fluxes In The Andean Tree Line Of Polylepis Reticulata In Ecuador: Present Balance And Projected Values For The 21st Century | 55600
ISSN: 2157-7617

Journal of Earth Science & Climatic Change
Open Access

Like us on:

Our Group organises 3000+ Global Conferenceseries Events every year across USA, Europe & Asia with support from 1000 more scientific Societies and Publishes 700+ Open Access Journals which contains over 50000 eminent personalities, reputed scientists as editorial board members.

Open Access Journals gaining more Readers and Citations
700 Journals and 15,000,000 Readers Each Journal is getting 25,000+ Readers

This Readership is 10 times more when compared to other Subscription Journals (Source: Google Analytics)
Recommended Conferences

12th World Conference on Earth Science & Geology

Frankfurt, Germany

10th World Conference on Earth Science & Geology

Frankfurt, Germany

4th Global Summit on Earth Science and Climate Change

Vancouver, Canada

4th Global Summit on Earth Science and Climate Change

Vancouver, Canada
Google Scholar citation report
Citations : 4072

Journal of Earth Science & Climatic Change received 4072 citations as per Google Scholar report

Journal of Earth Science & Climatic Change peer review process verified at publons
Indexed In
  • CAS Source Index (CASSI)
  • Index Copernicus
  • Google Scholar
  • Sherpa Romeo
  • Online Access to Research in the Environment (OARE)
  • Open J Gate
  • Genamics JournalSeek
  • JournalTOCs
  • Ulrich's Periodicals Directory
  • Access to Global Online Research in Agriculture (AGORA)
  • Centre for Agriculture and Biosciences International (CABI)
  • RefSeek
  • Hamdard University
  • OCLC- WorldCat
  • Proquest Summons
  • SWB online catalog
  • Publons
  • Euro Pub
Share This Page

Carbon stocks and fluxes in the Andean tree line of Polylepis reticulata in Ecuador: Present balance and projected values for the 21st century

World Conference on Climate Change

Carlos A Gracia

University of Barcelona, Spain University of Cuenca, Ecuador

ScientificTracks Abstracts: J Earth Sci Clim Change

DOI: 10.4172/2157-7617.C1.027

Trees in the tropical and subtropical mountains of South America are able to develop at high elevation, with some species forming the highest tree-line in the world at 5200m. Under these unique environmental conditions, only evergreen trees of the genus Polylepis are able to subsist. Polylepis reticulata is a very slow growth tree. The strategy of these trees to survive in such unfavorable conditions has been analyzed in the Cajas National Park (Azuay, Ecuador). In this work we measure for the first time, the carbon stocks and fluxes, particularly GPP, NPP, respiration and carbon allocation of Polylepis reticulata growing over 4000 m of altitude. From dendrometric measurements we have estimated the age of some trees (around 30 cm in diameter) to be more than 400 years. The temperature increase and changes in the rainfall pattern in these areas of the Andean cordillera can modify substantially the carbon fluxes between the forest and the atmosphere. From the 1151gC.m-2 year-1 uptake as GPP, 888gC.m-2 year-1 is returned to the atmosphere as growth and maintenance respiration. Most of the carbon retained as NPP is allocated to the leaves (194 from the 263 gCm-2 year-1). To produce one kg of dry biomass these trees transpire 5m3 of water. The physiological response of P. reticulata under different RCP scenarios (IPCC, 2013) has been simulated using the GOTILWA+ model. The results show drastic changes in all the scenarios. For example growing under the RCP 2.6, at the end of the present century the NPP is projected to increase up to 362 gCm-2 year-1 but, at the same time, the carbon allocated to leaves increase up to 325 gCm-2 year-1 or 90 per cent of the NPP. In that scenario the water used to grow 1 kg of dry matter is projected to increase up to 20 m3. The exploration of other climate scenarios shows more drastic changes that put at risk the survival of this emblematic species endemic of the Andean cordillera.

Carlos A Gracia is the Professor at the Department of Ecology, University of Barcelona. The ecophysiological responses of forest ecosystems to climate change, primary production, water and carbon balance are the core of his research work. He is the author of GOTILWA+, a process-based forest growth simulation model under different climate change scenarios. He has been the Vice-President of the Spanish Society of Terrestrial Ecology (AEET) and Member of the Directory Board of the Spanish Society of Forest Science (SECF), Member of the Scientific Advisory Board of the European Forest Institute (EFI). Since January 2014, he has joined the Prometeo fellowship from the SENESCYT (Secretaría Nacional de Educación Superior, Ciencia, Tecnología e Innovación) of Ecuador at the University of Cuenca (Azuay, Ecuador).

Email: [email protected]