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| Brandt, Angelika; Gutt, Julian; Hildebrandt, Marc; Pawlowski, Jan; Schwendner, Jakob; Soltwedel, Thomas; Thomsen, Laurenz. |
| Many countries are very active in marine research and operate their own research fleets. In this decade, a number of research vessels have been renewed and equipped with the most modern navigation systems and tools. However, much of the research gear used for biological sampling, especially in the deep-sea, is outdated and dependent on wired operations. The deployment of gear can be very time consuming and, thus, expensive. The present paper reviews wire-dependent, as well as autonomous research gear for biological sampling at the deep seafloor. We describe the requirements that new gear could fulfil, including the improvement of spatial and temporal sampling resolution, increased autonomy, more efficient sample conservation methodologies for morphological... |
| Tipo: Text |
Palavras-chave: Deep-sea; Autonomous sampling devices; Sampling efficiency; Benthic research; Wire times; Robotics. |
| Ano: 2016 |
URL: https://archimer.ifremer.fr/doc/00335/44589/44306.pdf |
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| Cauvy-fraunié, Sophie; Trenkel, Verena; Daufresne, Martin; Maire, Anthony; Capra, Hervé; Olivier, Jean-michel; Lobry, Jérémy; Cazelles, Bernard; Lamouroux, Nicolas. |
| Long-term ecological surveys (LTES) often exhibit strong variability among sampling dates. The use and interpretation of such interannual variability is challenging due to the combination of multiple processes involved and sampling uncertainty. Here, we analysed the interannual variability in ~30 years of 150 species-density (fish and invertebrate) and environmental-observation time series in four aquatic-systems (stream, river, estuary, and marine continental shelf) with different sampling efforts to identify the information provided by this variability. We tested, using two empirical methods, whether we could observe simultaneous fluctuation between detrended time series corresponding to widely acknowledged assumptions about aquatic population dynamics:... |
| Tipo: Text |
Palavras-chave: Long-term ecological surveys (LTES); Aquatic species (stream -river-estuary- marine); Interannual variability; Symbolic analyses; Sampling efficiency. |
| Ano: 2019 |
URL: https://archimer.ifremer.fr/doc/00606/71805/70293.pdf |
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| LIMA,DAYANA A.; CORDEIRO,DANILO P.; FRANKLIN,ELIZABETH. |
| Abstract Larvae of Psychodidae develop in a variety of breeding sites, including vertebrate feces. As searching for the larvae can be an extremely difficult task, immatures of many species are little known, with descriptions of coprophagous moth flies all from outside the Neotropics. In an attempt to mitigate this challenge, we tested an oviposition trap using cattle dung as attractant, measured the efficiency and specificity of the traps and the most efficient period of exposition in the field. With 60 traps installed in one fragment of ombrophilous forest, 344 immatures were collected, distributed in four species of Psychoda and one of Feuerborniella. Psychodidae accounted for 75% of the collected Diptera. The high specificity of the trap to Psychodidae... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cattle-Arthropoda; Immature insects; Psychodinae; Sampling efficiency. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652020000100709 |
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