Scheda di dettaglio – i prodotti della ricerca
| Dato | Valore |
|---|---|
| Title | Resting vs active stages: the up and down in plankton dynamics |
| Abstract | Composition of the marine coastal plankton undergoes seasonal fluctuations and interannual variations also due to the alternance of active and resting stages (cysts) in the water column and sediments. To fully understand the functioning of planktonic systems in marine coastal areas we need to integrate information coming from pelagos and benthos into a continuum that helps us to quantify the biological transfer between these two domains. To achieve this goal we have set up an ad-hoc experimental design in a confined marine basin at Taranto (southern Italy, Ionian Sea). We considered: active stages in the water column; cyst production (sediment traps); cyst accumulation in the sediments and in situ cyst germination (inverted traps). The whole study was structured in two "times", one in autumn, to observe the encystment dynamics, and one in the following spring, to observe the excystment. A total of 222 taxa were found in all the components of the system. In particular, 150 were active in the water column, 88 were cysts sunk in the sediment traps, 72 constituted the "cyst bank" in the sediments, and 63 were found as newly excysted active stages in the inverted traps. Only 17 taxa resulted common to all the sampling types. Scrippsiella trochoidea (Dinoflagellata), Ciliophora spp. and Acartia sp. (Copepoda) were selected as examples of life-cycle strategies. Different behaviours of taxa and their tuning with the environmental conditions result in the apparent unpredictability of plankton dynamics and composition in confined marine coastal areas. |
| Source | 50th European marine Biology Symposium, Helgoland, Germani, 21/9/2015, 25/9/2015 |
| Keywords | resting stagesplanktonbenthic pelagic coupling |
| Year | 2015 |
| Type | Abstract in atti di convegno |
| Authors | Belmonte M., Rubino F., Belmonte G. |
| Text | 371670 2015 resting stages plankton benthic pelagic coupling Resting vs active stages the up and down in plankton dynamics Belmonte M., Rubino F., Belmonte G. CNR IStituto per l Ambiente Marino Costiero, S.S. di Taranto CNR IStituto per l Ambiente Marino Costiero, S.S. di Taranto Lab. di Zoogeografia e Fauna, Universita del Salento, Lecce Published version 50th European marine Biology Symposium Helgoland, Germani 21/9/2015, 25/9/2015 Internazionale Contributo Composition of the marine coastal plankton undergoes seasonal fluctuations and interannual variations also due to the alternance of active and resting stages cysts in the water column and sediments. To fully understand the functioning of planktonic systems in marine coastal areas we need to integrate information coming from pelagos and benthos into a continuum that helps us to quantify the biological transfer between these two domains. To achieve this goal we have set up an ad hoc experimental design in a confined marine basin at Taranto southern Italy, Ionian Sea . We considered active stages in the water column; cyst production sediment traps ; cyst accumulation in the sediments and in situ cyst germination inverted traps . The whole study was structured in two times , one in autumn, to observe the encystment dynamics, and one in the following spring, to observe the excystment. A total of 222 taxa were found in all the components of the system. In particular, 150 were active in the water column, 88 were cysts sunk in the sediment traps, 72 constituted the cyst bank in the sediments, and 63 were found as newly excysted active stages in the inverted traps. Only 17 taxa resulted common to all the sampling types. Scrippsiella trochoidea Dinoflagellata , Ciliophora spp. and Acartia sp. Copepoda were selected as examples of life cycle strategies. Different behaviours of taxa and their tuning with the environmental conditions result in the apparent unpredictability of plankton dynamics and composition in confined marine coastal areas. Abstract in atti di convegno BELMONTE MANUELA fernando.rubino RUBINO FERNANDO DTA.AD002.135.001 Interazioni bento pelagiche nel controllo della dinamica del plancton marino costiero |