نتایج جستجو برای: river ecosystem

تعداد نتایج: 162076  

2005
Jeng-Chung Chen Ni-Bin Chang Y. C. Chang M. T. Lee

Storm water overflow from the combined sewer system might result in a sudden devastating impact to the local ecosystem in an urban river environment. In order to assess overflow pollution load during tropical rainfall, a web-based share vision modelling system is organized and designed in this study to investigate the resultant water quality impacts from both spatial and temporal aspects simult...

2010

Governmental entities are responsible for managing and conserving large numbers of lake, river, and wetland ecosystems that can be addressed only rarely on a case-by-case basis. We present a system for predictive classification modeling, grounded in the theoretical foundation of landscape limnology, that creates a tractable number of ecosystem classes to which management actions may be tailored...

2015
María R. Felipe-Lucia Berta Martín-López Sandra Lavorel Luis Berraquero-Díaz Javier Escalera-Reyes Francisco A. Comín Antoni Margalida

The ecosystem services framework has enabled the broader public to acknowledge the benefits nature provides to different stakeholders. However, not all stakeholders benefit equally from these services. Rather, power relationships are a key factor influencing the access of individuals or groups to ecosystem services. In this paper, we propose an adaptation of the "cascade" framework for ecosyste...

2012
R. Seppelt A. A. Voinov S. Lange D. Bankamp Dries Landuyt Elina Bennetsen Rob D’Hondt Guy Engelen Steven Broekx

While being studied by scientists for decades, the term ecosystem services was only recently introduced to the general public. This introduction intended broad-scale recognition of ecosystems and their value for human wellbeing. Both quantitative and qualitative research on ecosystem services became emerging topics in scientific research. Ecosystem service prediction models were developed varyi...

Journal: :Science 2012
Guy Woodward Mark O Gessner Paul S Giller Vladislav Gulis Sally Hladyz Antoine Lecerf Björn Malmqvist Brendan G McKie Scott D Tiegs Helen Cariss Mike Dobson Arturo Elosegi Verónica Ferreira Manuel A S Graça Tadeusz Fleituch Jean O Lacoursière Marius Nistorescu Jesús Pozo Geta Risnoveanu Markus Schindler Angheluta Vadineanu Lena B-M Vought Eric Chauvet

Excessive nutrient loading is a major threat to aquatic ecosystems worldwide that leads to profound changes in aquatic biodiversity and biogeochemical processes. Systematic quantitative assessment of functional ecosystem measures for river networks is, however, lacking, especially at continental scales. Here, we narrow this gap by means of a pan-European field experiment on a fundamental ecosys...

2006
David Yates Annette Huber

Potential conflicts arising from competing demands of complex water resource systems require a holistic approach to address the tradeoff landscape inherent in freshwater ecosystem service evaluation. The Water Evaluation and Planning model version 21 (WEAP21) is a comprehensive integrated water resource management (IWRM) model that can aid in the evaluation of ecosystem services by integrating ...

2005
Efrat Farber Avner Vengosh Ittai Gavrieli Amer Marie Thomas D. Bullen Bernhard Mayer Ran Holtzman Michal Segal Uri Shavit

Recent geochemical and hydrological findings show that the water quality of the base flow of the Lower Jordan River, between the Sea of Galilee and the Dead Sea, is dependent upon the ratio between surface water flow and groundwater discharge. Using water quality data, mass-balance calculations, and actual flow-rate measurements, possible management scenarios for the Lower Jordan River and thei...

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