Article history: Received 1 December 2003 Received in revised form 28 September 2005 Accepted 29 September 2005 Available online 27 December 2005 This paper considers the connection between the diversity of catch in amulti-species fishery and the productivity of the fishery under different access regimes. A modified Gordon– Schaefer model is used to analyse the importance of the level of divers...

During July, 1991, two young boys were brutally attacked by multiple teenaged assailants while fishing at a suburban Connecticut pond. After being accosted at knife point, the victims were bound with duct tape, beaten with a baseball bat and dragged into the pond to drown. One victim managed to free himself, rescue his colleague, and summon help from local residents. An exhaustive investigation...

Clean, freshwater is a necessity to sustain human life. Maintenance of freshwater biodiversity is critical to sustain vital ecological functions, such as biofiltration, that promote clean water. In addition to clean water, functionally intact and biologically complex freshwater ecosystems also provide many other economically valuable services and long-term benefits to human societies such as fo...

Production ecosystems typically have a high dependence on supporting and regulating ecosystem services and while they have thus far managed to sustain production, this has often been at the cost of externalities imposed on other systems and locations. One of the largest challenges facing humanity is to secure the production of food and fiber while avoiding long-term negative impacts on ecosyste...

Species invasion is one of the leading mechanisms of global environmental change, particularly in freshwater ecosystems. We used the Food and Agriculture Organization’s Database of Invasive Aquatic Species to study invasion rates and to analyze invasion pathways within Europe. Of the 123 aquatic species introduced into six contrasting European countries, the average percentage established is 63...

A major challenge for ecological research is to identify ways to improve resilience to climate-induced changes in order to secure the ecosystem functions of natural systems, as well as ecosystem services for human welfare. With respect to aquatic ecosystems, interactions between climate warming and the elevated runoff of humic substances (brownification) may strongly affect ecosystem functions ...

We contrast ecological and life history traits of the well studied freshwater invader, the zebra mussel (Dreissena polymorpha), with the lesser known invasive golden mussel (Limnoperna fortunei) to compare salient biological traits and environmental limits, and to predict the potential spread and ecosystem impacts ofL. fortunei in areas where it is introduced. Both species are sessile, byssate ...

A new system for automatic detect fault of water quality monitoring devices used in aquaculture is proposed in this paper. The proposed system can detect the whole system which includes platform、gateway、WSN、sensor、 actuator. China is the world’s largest freshwater culture nation which provides 80% of the freshwater culture fish. The water quality is essential to freshwater culture, and the envi...

PURPOSE: This technical note describes the application of a suite of biomarker assays to samples of brown bullhead liver tissues taken from two locations in Ohio. One was a river reach that had historically been severely impacted by the effluents of a coking plant; the other is regarded as relatively pristine, and is a freshwater estuarine research preserve. The objective of the study was to in...

[1] The ocean surface rapidly exchanges heat, freshwater, and gases with the atmosphere, but once water sinks into the ocean interior, the inherited properties of seawater are closely conserved. Previous water‐mass decompositions have described the oceanic interior as being filled by just a few different property combinations, or water masses. Here we apply a new inversion technique to climatol...