geoscience.net logo
+ Resolve Article
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter

+ Translate
+ Subscribe to Site Feed
GeoScience Most Shared ContentMost Shared Content

Potential detection and deterrence ranges by harbor seals of underwater acoustic harassment devices (AHD) in the Bay of Fundy, Canada


, : Potential detection and deterrence ranges by harbor seals of underwater acoustic harassment devices (AHD) in the Bay of Fundy, Canada. Journal of the World Aquaculture Society 33(2): 176-183

Underwater acoustic harassment devices (AHDs) are designed to deter seals from attacking finfish aquaculture cages. They may also be unintentionally disturbing non-target marine mammals. As the distance from the sound source increases, the rate at which the sound pressure level (SPL) drops per unit distance decreases. This prohibits presenting loud sounds near the cages without also creating sounds that can be detected kilometers away.

US$19.90

DOI: 10.1111/j.1749-7345.2002.tb00492.x


Other references

Fink, Hermann., 1931: The staining of yeast.cells with methylene blue and studies of the permeability of the yeast cell-membrane. The authors show that methylene blue staining cannot be relied upon to distinguish between living and dead yeast cells. If placed in distilled water, particularly in the presence of certain sugars, the cells can be stained very darkly, yet are the...

Feinstein, Alvan R., 1999: Indexes of contrast and quantitative significance for comparisons of two groups. Although boundaries for 'large' and 'small' differences are needed to plan research and interpret results, the diverse indexes of descriptive contrast for the central indexes, A and B, of two groups, have not received intensive...

Suzuki, Y.; Yamashita, R.; Nakai, K.; Sugano, S., 2001: DBTSS: DataBase of human Transcriptional Start Sites and full-length cDNAs. Although the information of cDNAs is indispensable for analyzing gene function, most of the cDNA sequences stored in current databases are imperfect in the sense that they lack the precise information of 5' end termini. To overcome this diffi...

Massmann, W., 1955: The danger of air pollution in railroad tunnels. Archiv für Gewerbepathologie und Gewerbehygiene 14(2): 129-189

Stern-Ginossar, N.; Mandelboim, O., 2009: An integrated view of the regulation of NKG2D ligands. NKG2D is one of the best characterized activating receptors and is expressed on natural killer cells and on various T-cell subsets. This receptor recognizes several different ligands that are induced by cellular stresses. In this review, we descri...

Grond, M.; Jauss, M.; Hamann, G.; Stark, E.; Veltkamp, R.; Nabavi, D.; Horn, M.; Weimar, C.; Köhrmann, M.; Wachter, R.; Rosin, L.; Kirchhof, P., 2014: Improved detection of silent atrial fibrillation using 72-hour Holter ECG in patients with ischemic stroke: a prospective multicenter cohort study. Adequate diagnosis of atrial fibrillation (AF), including paroxysmal AF, is an important part of stroke workup. Prolonged ECG monitoring may improve the detection of paroxysmal, previously undiagnosed AF (unknown AF). Therefore, we evaluated syste...

Apetov, S.A., 1954: Non occupational traumatism of adults according to the data of the Moskva emergency station. Sovetskoe Zdravookhranenie 13(6): 47-50

Chen, W.J., 1988: The clinical and experimental studies on "the therapeutic principle of huoxue huayu" in traditional Chinese medicine. Proceedings of the Chinese Academy of Medical Sciences and the Peking Union Medical College 3(4): 236-238

Rønnov-Jessen, L.; Petersen, O.W., 1993: Induction of alpha-smooth muscle actin by transforming growth factor-beta 1 in quiescent human breast gland fibroblasts. Implications for myofibroblast generation in breast neoplasia. By using a novel experimental system for the study of reactive fibroblast differentiation at the molecular level, we describe the induction of the alpha-isoform of smooth muscle actin by transforming growth factor-beta (TGF-beta 1) in human normal...

Gollhofer, J.; Timofeev, R.; Lan, P.; Schmidt, W.; Buckhout, T.J., 2015: Vacuolar-Iron-Transporter1-Like proteins mediate iron homeostasis in Arabidopsis. Iron deficiency is a nutritional problem in plants and reduces crop productivity, quality and yield. With the goal of improving the iron (Fe) storage properties of plants, we have investigated the function of three Arabidopsis proteins with homolo...