Scheda di dettaglio – i prodotti della ricerca
| Dato | Valore |
|---|---|
| Title | Niche Partitioning at Emergence of Two Syntopic Dragonflies |
| Abstract | We investigated the ecological requirements in the emergence phase of two congeneric species of Aeshnidae, Aeshna grandis (Linnaeus 1758) and A. juncea (Linnaeus 1758), occurring in syntopy at the southernmost limit of their range. We sampled the exuviae of the two species at the peak of their emergence in three lakes in NW Italy. In each lake we defined 30 to 50 sampling plots along the lake borders where we checked for the presence of exuviae and collected data on the microhabitat composition. By modeling the response of the exuviae presence and abundance against the environmental parameters, we could highlight a partial differentiation in the ecological requirements of the two species at emergence. In particular, A. grandis is more influenced by the structure of the aquatic vegetation than A. juncea and the niche space occupied by A. grandis is wider, almost totally encompassing the one of A. juncea. We argue that A. grandis exploits microhabitats rich in aquatic plants to avoid competition with A. juncea. We suggest the preservation of well-structured aquatic vegetation as a key management practice to preserve the three studied populations of A. grandis, a species which has been recognized as Vulnerable for Italy according to the IUCN criteria. |
| Source | Ecologies (Basel) |
| Keywords | Odonataspecies coexistenceecological nichen-dimensional hypervolumeAeshnidae |
| Journal | Ecologies (Basel) |
| Editor | MDPI, Basel, Svizzera |
| Year | 2021 |
| Type | Articolo in rivista |
| DOI | 10.3390/ecologies2010002 |
| Authors | Elena Piano, Stefano Mammola, Martina Dalle, Elisa Riservato, Marco Isaia |
| Text | 456043 2021 10.3390/ecologies2010002 ISI Web of Science WOS 000645927000001 Odonata species coexistence ecological niche n dimensional hypervolume Aeshnidae Niche Partitioning at Emergence of Two Syntopic Dragonflies Elena Piano, Stefano Mammola, Martina Dalle, Elisa Riservato, Marco Isaia Laboratory of Terrestrial Ecosystems, Department of Life Sciences and System Biology, University of Turin, Via Accademia Albertina, I 10123 Torino, Italy; Laboratory for Integrative Biodiversity Research LIBRe , Finnish Museum of Natural History LUOMUS , University of Helsinki, F 00014 Helsinki, Finland; Largo Tonolli 50, I 28922 Pallanza, Italy Molecular Ecology Group MEG , Water Research Institute IRSA , National Research Council CNR We investigated the ecological requirements in the emergence phase of two congeneric species of Aeshnidae, Aeshna grandis Linnaeus 1758 and A. juncea Linnaeus 1758 , occurring in syntopy at the southernmost limit of their range. We sampled the exuviae of the two species at the peak of their emergence in three lakes in NW Italy. In each lake we defined 30 to 50 sampling plots along the lake borders where we checked for the presence of exuviae and collected data on the microhabitat composition. By modeling the response of the exuviae presence and abundance against the environmental parameters, we could highlight a partial differentiation in the ecological requirements of the two species at emergence. In particular, A. grandis is more influenced by the structure of the aquatic vegetation than A. juncea and the niche space occupied by A. grandis is wider, almost totally encompassing the one of A. juncea. We argue that A. grandis exploits microhabitats rich in aquatic plants to avoid competition with A. juncea. We suggest the preservation of well structured aquatic vegetation as a key management practice to preserve the three studied populations of A. grandis, a species which has been recognized as Vulnerable for Italy according to the IUCN criteria. Published version https //doi.org/10.3390/ecologies2010002 Published version 2021_PIANO ET AL Ecologies.pdf Articolo in rivista MDPI 2673 4133 Ecologies Basel Ecologies Basel stefano.mammola MAMMOLA STEFANO |