In 2012 verloren we Jean Jacques Peters, voormalig ingenieur van het Waterbouwkundig Laboratorium (1964 tot 1979) en internationaal expert in sedimenttransport, rivierhydraulica en -morfologie. Als eerbetoon aan hem hebben we potamology (http://www.potamology.com/) gecreëerd, een virtueel gedenkarchief dat als doel heeft om zijn manier van denken en morfologische aanpak van rivierproblemen in de wereld in stand te houden en te verspreiden.
Het merendeel van z’n werk hebben we toegankelijk gemaakt via onderstaande zoekinterface.
Importance of multi-sensor observations to advance species co-occurrence knowledge: A demonstration of two acoustic technologies
Calonge, A.; Goossens, J.; Muñiz, C.; Reubens, J.; Debusschere, E. (2024). Importance of multi-sensor observations to advance species co-occurrence knowledge: A demonstration of two acoustic technologies. Mar. Ecol. Prog. Ser. 727: 49-65. https://dx.doi.org/10.3354/meps14496
Multi-sensor observations, integrated across time and space, may bridge knowledge gaps in ecosystem dynamics, one aspect of which is species co-occurrence. In the present work, we combined data streams from 2 acoustic technologies; passive acoustic monitoring (PAM) and acoustic telemetry (AT) jointly installed under the LifeWatch project. We made use of existing long-term data series from studies on single-species dynamics, to investigate the co-occurrence of multiple species: European seabass, Atlantic cod and cetaceans (harbour porpoise and dolphins), in the Belgian part of the North Sea. Common co-occurrence analyses were applied to a combined PAM and AT hourly presence-absence matrix at different spatial and temporal resolutions. The fish species were in the presence of harbour porpoise at least one-third (seabass) to nearly half (cod) of the time they were detected. At a seasonal resolution, we did not observe probabilities of occupancy to be higher or lower than what is expected by chance, while we could discern patterns of co-occurrence when using an hourly resolution. Analyses done at an hourly resolution showed that porpoises have a significantly higher probability of co-occurrence with cod or seabass during autumn and winter nights. Developing these large-scale networks of integrated acoustic instruments while considering species co-occurrences would further expand data applicability. Considering co-occurrence in ecological research is a step towards ecosystem-based management of our oceans.
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