|
|
|
|
| |
|
|
| Johnston, Robyn M.; McCartney, Matthew P.. |
| For agriculture there is a continuum of water storage options, ranging from groundwater aquifers, soil water, natural wetlands and small ponds and tanks to large reservoirs. In any situation each of these has its own niche in terms of technical feasibility, socioeconomic sustainability and impact on public health and the environment. Planning storage requires insight into impending needs and also a good understanding of what already exists and what was, and was not, successful, in the past. This report provides an inventory of existing and prospective water storage in the Ghanaian Volta and the Ethiopian Blue Nile basins. It provides as much quantitative data as possible, but highlights both the dearth of readily available information and the lack of... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Water storage; River basins; Reservoirs; Ponds; Tanks; Groundwater; Soil moisture; Wetlands; Environmental Economics and Policy; Farm Management. |
| Ano: 2010 |
URL: http://purl.umn.edu/113608 |
| |
|
| |
|
| |
|
|
| Jezequel, Youenn; Bonnel, Julien; Coston-guarini, Jennifer; Guarini, Jean-marc; Chauvaud, Laurent. |
| Experiments in marine behavioural ecology rely heavily on observations made in tanks. However, when studying acoustic behaviours of marine animals in confined volumes, the effects of reverberation must be characterized, something that has been overlooked in parts of the marine ecology literature. In this study, we characterized reverberation in tanks using an artificial sound source and examined the implications for bioacoustic studies using sounds emitted by the European lobster Homarus gammarus during feeding and in response to stress. Broadband and transient sounds commonly produced by crustaceans were severely impacted by reverberation such that their spectral characteristics and pulse width durations could not be assessed. In contrast, low-frequency... |
| Tipo: Text |
Palavras-chave: European lobster; Passive acoustics; Tanks; Reverberation; Rattle; Buzzing sound; Spectral analysis. |
| Ano: 2018 |
URL: https://archimer.ifremer.fr/doc/00439/55080/56512.pdf |
| |
|
|
|
