Methods for estimating the occurrence and abundance of marine fishes
Perez-Ruzafa, A.; Moreno-Borges, S.; Pérez-Marcos, M.; Lenfant, P.; Clemente, S.; Marcos, C. (2025). Methods for estimating the occurrence and abundance of marine fishes, in: Cabral, H. et al.[s.d.] Ecology of marine fish. pp. 175-198. https://dx.doi.org/10.1016/b978-0-323-99036-3.00002-7
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| Author keywords |
Fish assemblage survey; Techniques; Gears; Factors of variability; Sampling designs |
| Authors | | Top |
- Perez-Ruzafa, A.
- Moreno-Borges, S.
- Pérez-Marcos, M.
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- Lenfant, P.
- Clemente, S.
- Marcos, C.
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| Abstract |
Understanding the distribution and dynamics of fish assemblages and populations, and the factors that determine them, is essential for managing resources, both for sustainable fisheries management and for the conservation of biodiversity and ecosystem integrity in the face of human impacts and the effects of climate change. In order to achieve this, it is necessary to employ sampling techniques and gears that are appropriate to the biology and behavior of the species in question. Furthermore, experimental sampling designs must be employed that are capable of controlling for the drivers of variability. This chapter reviews the different techniques available, from those based on traditional fishing techniques and gears to those based on remote sensors, the direct observation of the population, or new approaches based on molecular techniques. It also discusses the advantages and limitations of each of these techniques and the conditions under which they can or should be used. |
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