Scheda di dettaglio – i prodotti della ricerca
| Dato | Valore |
|---|---|
| Title | Estimating functional diversity of zooplankton taxa: comparison of C, N isotopic signatures of organisms along lake morpho-edaphic gradient |
| Abstract | Increasing concern on biodiversity consequent to human impacts on the environment provides a basis for quantifying the role of organisms in transferring matter and energy through the trophic web, i.e. paths and processes responsible for ecosystem functioning. Aquatic environments, and freshwater in particular, have been identified as extremely sensitive to biodiversity loss consequent to human activities. To understand and ultimately prevent loss of ecosystem functioning, however, impact of environmental variables on operational diversity has to be estimated. A possible approach to quantify roles and understand vicariance, is by applying carbon and nitrogen stable isotopes analyses. By measuring carbon and nitrogen isotopic signatures, organism food sources and position level along food webs are tracked, thus providing quantitative estimates of bi-dimensional niches. We applied C and N stable isotopes analysis to zooplankton taxa from lakes to compare how and whether taxa specific isotopic signatures vary along a morpho-edaphic gradient. Analyses were performed on zooplankton taxa from 11 lakes of the same subalpine region, collected in two seasons representative of different degrees of carbon fractionation and nitrogen enrichment. We provided basic information for understanding the possible impact of environmental variables, such as algal nutrient enrichment and lake size, on the complexity of between-taxa interactions which are crucial for estimating vulnerability of lacustrine ecosystems to human impacts. |
| Source | SESF 8: VIII Symposium for European Freshwater Sciences, Muenster, Germania, 1-5 luglio 2013 |
| Keywords | ZooplanktonStable isotope analysisSubalpine lakesTrophic role |
| Year | 2013 |
| Type | Presentazione |
| Authors | Emanuela Boggio; Roberta Bettinetti; Marina Manca |
| Text | 282680 2013 Zooplankton Stable isotope analysis Subalpine lakes Trophic role Estimating functional diversity of zooplankton taxa comparison of C, N isotopic signatures of organisms along lake morpho edaphic gradient Emanuela Boggio; Roberta Bettinetti; Marina Manca Emanuela Boggio; Marina Manca CNR ISE VB Roberta Bettinetti Universita degli Studi dell Insubria, Dipartimento di Scienze Chimiche e Ambientali, Como Increasing concern on biodiversity consequent to human impacts on the environment provides a basis for quantifying the role of organisms in transferring matter and energy through the trophic web, i.e. paths and processes responsible for ecosystem functioning. Aquatic environments, and freshwater in particular, have been identified as extremely sensitive to biodiversity loss consequent to human activities. To understand and ultimately prevent loss of ecosystem functioning, however, impact of environmental variables on operational diversity has to be estimated. A possible approach to quantify roles and understand vicariance, is by applying carbon and nitrogen stable isotopes analyses. By measuring carbon and nitrogen isotopic signatures, organism food sources and position level along food webs are tracked, thus providing quantitative estimates of bi dimensional niches. We applied C and N stable isotopes analysis to zooplankton taxa from lakes to compare how and whether taxa specific isotopic signatures vary along a morpho edaphic gradient. Analyses were performed on zooplankton taxa from 11 lakes of the same subalpine region, collected in two seasons representative of different degrees of carbon fractionation and nitrogen enrichment. We provided basic information for understanding the possible impact of environmental variables, such as algal nutrient enrichment and lake size, on the complexity of between taxa interactions which are crucial for estimating vulnerability of lacustrine ecosystems to human impacts. Published version In SEFS 8 VIII Symposium for European Freshwater Sciences Muenster, Germania, 1 5 luglio 2013 . SESF 8 VIII Symposium for European Freshwater Sciences Muenster, Germania 1 5 luglio 2013 Internazionale Contributo PPT PPT_SESF_Boggio.pdf Presentazione BOGGIO EMANUELA marinamarcella.manca MANCA MARINA MARCELLA TA.P04.016.004 Ecologia teorica e applicata degli ecosistemi acquatici |