Comparative limnology of natural and man-made tropical lakes

Limnology of the Great Lakes of Nicaragua

Man-made lakes, ecological studies and conservation needs in Nigeria.

The benefit derived from the creation of man-made lakes in Nigeria and other developing countries is usually associated with great risks. Whenever we establish a dam, it appears we dam the inherent consequences to the detriment of man and his environment. Debts were incurred by the countries concerned, man and animals were displaced, arable lands destroyed including degradation of forest and wi...

Terrestrial Natural and Man-made Electromagnetic Noise

The terrestrial environment is continuously exposed to electromagnetic radiations which set up a “background” electromagnetic noise. For what concerns electromagnetic waves in the Non Ionizing Radiation band (NIR), i.e. for frequencies lower than 300 GHz, the background can have a natural or an artificial origin. In the first case electromagnetic radiations have generally an atmospheric or a co...

Entropy-based Serviceability Assessment of Water Distribution Networks, Subjected to Natural and Man-Made Hazards

In this study a modified entropy-based measure is presented for evaluating the serviceability level of water distribution networks in which the hydraulic uncertainties (flow rates in pipes) as well as the uncertainties due to mechanical parameters (failure probabilities of links) are considered simultaneously. In the proposed entropy calculation method, the connectivity order of the network dem...

Trait sorting in Daphnia colonising man-made lakes

1. We used a zooplankton metacommunity to ask how dispersal, genetic drift and selection act to determine the local and regional distributions of trait variation. Since the formation of the lakes 80 years ago, cladoceran species have sorted into local assemblages that cluster by lake depth. Given this species sorting, we ask whether intraspecific variation in an ecologically important phenotypi...