Early Warnings in Ecosystems: Comparison between Different Indicators
نویسندگان
چکیده
RAUL DONANGELO, HUGO FORT, MARTEN SCHEFFER, EGBERT H. VAN NES, and VASILIS DAKOS ∗ Instituto de F́ısica, Facultad de Ingenieŕıa, Universidad de la República, Julio Herrera y Reissig 565, 11.300 Montevideo, Uruguay. † Instituto de F́ısica, Facultad de Ciencias, Universidad de la República, Iguá 4225, 11.400 Montevideo, Uruguay. ‡ Aquatic Ecology and Water Quality Management Group, Wageningen University PO Box 8080, 6700 DD Wageningen, The Netherlands.
منابع مشابه
Early Warnings for Catastrophic Shifts in Ecosystems: Comparison between Spatial and Temporal Indicators
The task of providing leading indicators of catastrophic regime shifts in ecosystems is fundamental in order to design management protocols for those systems. Here we address the problem of lake eutrophication (that is, nutrient enrichment leading to algal blooms) using a simple spatial lake model. We discuss and compare different spatial and temporal early warning signals announcing the catast...
متن کاملCatastrophic phase transitions and early warnings in a spatial ecological model
Gradual changes in exploitation, nutrient loading, etc produce shifts between alternative stable states (ASS) in ecosystems which, quite often, are not smooth but abrupt or catastrophic. Early warnings of such catastrophic regime shifts are fundamental for designing management protocols for ecosystems. Here we study the spatial version of a popular ecological model, involving a logistically gro...
متن کاملComparison of the environmental indicators of phosphorus efficiency and the balance between saffron and wheat production systems in the Qaenat region, Iran
Improving the resource use efficiency in agro- ecosystems is an importantfactor for reducing environmental pollution. To evaluate phosphorus (P) efficiency andbalance indicators, research was conducted in wheat and saffron production systems inthe Qaenat region (South Khorasan Province, Iran) during 2011 and 2012, based on themethod of the Organization for Economic Co-operation and Development ...
متن کاملComparison of the environmental indicators of phosphorus efficiency and the balance between saffron and wheat production systems in the Qaenat region, Iran
Improving the resource use efficiency in agro- ecosystems is an importantfactor for reducing environmental pollution. To evaluate phosphorus (P) efficiency andbalance indicators, research was conducted in wheat and saffron production systems inthe Qaenat region (South Khorasan Province, Iran) during 2011 and 2012, based on themethod of the Organization for Economic Co-operation and Development ...
متن کاملLooking Back and Forward: Could Safety Indicators Have Given Early Warnings about the Deepwater Horizon Accident?
An important question with respect to the Deepwater Horizon accident is whether the accident is a symptom of systemic safety problems in the deepwater drilling industry. An answer to such a question is hard to obtain unless the risk level related to major accident prevention, preparedness, and responses of the oil and gas industry is measured and evaluated over time. In this paper, we present i...
متن کامل