Search results for "Food web"
showing 10 items of 181 documents
Relazioni trofiche tra organismi sospensivori in reef biogenici intertidali
2012
Composition and trophic structure of motile fauna populations in macrophytes of a natural CO2 vent system
2014
The trophic structure of a pipefish community (Pisces: Syngnathidae) from a western Mediterranean seagrass meadow based on stable isotope analysis
2004
Syngnathus abaster and S. typhle (Pisces. Syngnathidae) from a dense Cymodocea nodosa meadow in the western Mediterranean Stagnone di Marsala (Italy) were studied using δ13C and δ15N analysis. Because of the presence of these two species in the same habitat and the specialized parental care by the male, the effect of species and sex on the isotopic composition was also studied to investigate the different feeding strategies between and within species. S. abaster and S. typhle exhibited enriched 13C and 15N values throughout the sampling period (δ13C mean ± s.e. = -10.5 ± 1.8‰ and -10.8 ± 2.0‰, δ15N mean ± s.e. = 11.9 ± 0.7‰ and 10.6 ± 1.0‰ respectively), suggesting that these species receiv…
Stable isotope signatures of selected benthos at natural carbon dioxide vents: preliminary results on macrophytes
2013
Stable isotopes: a tool for understanding trophodynamic functioning in coastal lagoons
2010
Spatial variations in habitat use and food habits of juvenile and adult fishes in a mangal ecosystem (Gazi Bay, Kenya)
2009
Exploitation of food sources by ichthyofauna in the Acquatina coastal system (Apulia, Italy)
2010
Using web-based information systems and stable isotopes analysis to investigate the trophic structure of a fish assemblage in a Mediterranean lagoon
2010
Uso trofico dell’habitat da parte dell’ittiofauna in una piccola laguna costiera mediterranea
2011
Stable isotopes and trophic positions of littoral fishes from a Mediterranean Marine Protected Area
2008
Stable isotope analyses were employed to explore feeding and foraging habitats and trophic levels of littoral fishes in a western Mediterranean Marine Protected Area (Egadi Islands, Sicily, Italy). Carbon and nitrogen stable isotope ratios were measured in primary producers, invertebrates and fishes collected in December 2001 and January 2002. Fishes of the littoral region of the Egadi Islands had isotopic signatures that fell into a wider range for δ13C (about 6‰) than for δ15N (about 3‰). Carbon isotope ratios were consistent with a food web based on mixed sources and two trophic pathways leading to different fish species. Differences in the isotopic composition between islands were highe…