BOOK OF ABSTRACTS - iufro landscape ecology conference

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IUFRO Landscape Ecology Working Group International Conference, 2-12 November, 2012 – Concepción, Chileof PRA approaches in involving the local community in understanding the environmental problems theyface and crafting solutions to address their issues.Key words: tropical rainforest, land use change, participatory rural appraisal, environmentaldegradadtion, Molawin-Dampalit subwatershed.Acknowledgements: The authors wish to acknowledge the cooperation of the local communities in theconduct of the PRA activities in the three study sites, the support of the Local Government Unit of LosBaños, Laguna.Assessing ecosystem function by soil quality and primary productivity with hyper-spectral remotesensing in desertified dry-lands, IsraelTarin Paz-Kagan a **Corresponding author: a The Albert Katz International School for Desert Studies, The Jacob BlausteinInstitute for Desert Research,Ben-Gurion University of the Negev, 84990 Midreshet Ben-Gurion,Israel.paztarin@gmail.comThe objective of this paper is to evaluate the functional state of managed semi-arid ecosystems byhyperspectral remote sensing (HSR) using soil quality and net primary productivity (NPP). The managedecosystems include: rain-fed afforestation, water harvesting afforestation, and intensive and traditionalgrazing systems in the northern Negev, Israel. We monitored soil quality, NPP and landscape patterningon a small spatial scale by HSR and common laboratory and field methods. Based on spectral data thatshow a significant capability to predict soil properties and primary productivity using the VNIRA (0.4-2.5µm) strategy, we upscale the data analysis to a large area. We adapted the assessment of soil quality asproposed by Cornel University. The soil quality variables that were tested include biological, chemical,and physical indicators (total of 14 indicators). The vegetation variables that were tested as indicators forecosystem state were: above ground biomass, plant cover and density. As to the relationships betweenfield and HSR, a high correlation (R 2 =0.89) was found between in-situ biomass measurements andspectroscopic-derived NDVI. The use of hyperspectral spectroscopy to evaluate landscape pattern byclassification methods, such as patch cover, patch density, and patch size distribution, revealed asignificant difference between land-uses. The soil assessment provides a comprehensive tool to performcritical environmental function at relatively modest cost and help target management. The use of HSR toevaluate soil indicators shows a promising tool for several soil quality indicators and with both cost andstatistical power advantages.Key words: managed land-use, ecosystem function, net primary productivity, soil quality, hyperspectralremote sensing.Acknowledgements: The work was funded by the European Commission Seventh Framework Programme(FP7/2007-2013) for the project entitled: Prevention and Restoration Actions to Combat Desertification(PRACTICE).
IUFRO Landscape Ecology Working Group International Conference, 2-12 November, 2012 – Concepción, ChilePostersStudy of macrofauna of some forest systems in AlgeriaBaha Sekhara Mounia a **Corresponding author: a Laboratoire d'écologie Ecole Normale Supérieure de Kouba, Alger,normalienne@yahoo.frThe study of the soil macrofauna in forests of Tighaghar, Beni Slimane, and El Maddad were sampled bythe method of direct manual sorting of cylindrical tubes of 10cm x 20cm. The groups represented are theearthworms, gastropods, the Fourmies, Arachnids, beetles, Chilopoda, Diplopoda, Hymenoptera andLepidoptera larvae. Oligochaete species sampled are represented in three families, eight genera and tenspecies. This stand is characterized by considerable heterogeneity in different bioclimatic zones with highconcentrations in the wet. However, there is a lack of diversification in the arid bioclimatic stage.Key words: forest, macrofauna soil, diversification, arid bioclimatic zone.Implementation of a hydrological model to estimate the effects of land-use change on water yield inthe northeast of PortugalJoão Rua a *, João Carlos Azevedo a , João Pedro Nunes b*Corresponding author: a Centro de Investigação de Montanha (CIMO) / Instituto Politécnico deBragança, Campus de Santa Apolónia, Apartado 1172, 5301-854 Bragança, Portugal, b Centro de Estudosdo Ambiente e do Mar (CESAM) / Universidade de Aveiro, Azeméis, Portugal.joao.c66@gmail.comLand-use change affects hydrological processes through changes in evapotranspiration and surface andsubsurface water movement in the landscape. Concern in the Mediterranean region has grown recentlydue to the prospects of a reduction in precipitation and the occurrence of large periods of drought,potentially affecting human communities and biodiversity. Land-use change at the watershed scale istherefore both a key water management and conservation issue. Our research consisted in theimplementation of a hydrological model in the Upper Sabor river catchment, Northeastern Portugal, toevaluate the impacts of land-cover change on hydrological processes, namely water yield. Our researchquestion was how landscape change will affect water yield in the Upper Sabor in the near future,considering change of the type and rate observed recently. This catchment was chosen to representlandscape composition and configuration in a changing mountain area of the Mediterranean regionwhere types and rates of land use change are known in detail for the last 50 years. SWAT (Soil and WaterAssessment Tool) was the model chosen to address the research question. The implementation of SWATconsisted of data gathering, preparation and database development: elevation, land use/land cover,weather, soils and land management practices. Model validation was done considering data onstreamflow between 1990 and 2008. The effect of land-use change on water yield was analysed bycomparing land use in the watershed during the validation period of time with projected land-usepatterns based upon observed trends.Key words: landscape change, hydrological model, SWAT, Sabor watershed, Portugal.Above-ground growth and carbon sequestration in secondary Nothofagus betuloides forests in SouthPatagonia, Chile.Gustavo Cruz a *, Susan Marquez a , Alvaro Promis a
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BOOK OF ABSTRACTS - iufro landscape ecology conference

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