| Autor: |
Valeria Tomaselli, Donatella Paffetti, Davide Travaglini, Lorenzo Chelazzi, Stefano Biricolti, Fabio Boscaleri, Francesca Bottalico, Anna Buonamici, Filippo Cimò, Isabella Colombini, Giovanni Fasano, Silvia Fiorentini, Olga Mastroianni, Alessandro Materassi, Antonio Perfetti, Riccardo Russu, Cristina Vettori |
| Jazyk: |
angličtina |
| Rok vydání: |
2011 |
| Předmět: |
|
| Zdroj: |
info:cnr-pdr/source/autori:Valeria Tomaselli; Donatella Paffetti; Davide Travaglini; Lorenzo Chelazzi; Stefano Biricolti; Fabio Boscaleri; Francesca Bottalico; Anna Buonamici; Filippo Cimò; Isabella Colombini; Giovanni Fasano; Silvia Fiorentini; Olga Mastroianni; Alessandro Materassi; Antonio Perfetti; Riccardo Russu; Cristina Vettori/congresso_nome:106° Congresso Nazionale della Società Botanica Italiana/congresso_luogo:Genova/congresso_data:21-23 settembre 2011/anno:2011/pagina_da:141/pagina_a:141/intervallo_pagine:141–141 |
| Popis: |
The project LIFE+ DEMETRA (DEvelopment of a quick Monitoring index as a tool to assess Environmental impacts of TRAnsgenic crops) arises from the need to analyze standardised numerical data within an informative system in supporting Genetically Modified Organisms (GMOs) monitoring. In particular, the project is aimed to the creation of a Quick Monitoring Index (QMI) to rapidly assess the potential risk generated by a selected range of transgenic crops in well determined ecosystems. The study area is the San Rossore - Migliarino - Massaciuccoli Regional Park, characterized mainly by wetlands, lowland forests, natural poplar groves and pine forests. For carrying out the experimental field activities, four test areas have been selected within the boundaries of the Regional Park, also taking into account their proximity to cropped (or potentially cropped) surfaces in which Genetically Modified (GM) crops could be used. Different environments have been selected: a) fields adjacent to natural mixed forests; b) abandoned fields; c) wet meadows; d) natural poplar groves. Some marked varieties (GMO free have been used, due both to Italian low restriction and to the sensitive environments selected) have been dislocated in arable surfaces closed to the selected test areas. Some native plants able to hybridize with the selected crops have been genotyped with nuclear molecular markers to evaluate possible hybridization. Analyses are carried out to assess a) local ecosystem biodiversity in relation to the target crops species; b) the interactions among the three levels in trophic chains; c) definition of potential relationships between transgene-environment-plant-animal-food chain in the study plots; d) individuation of species sensitive to GM crops; and e) definition of diversity indexes to monitor biodiversity changes related to crops which could potentially be converted in transgenics. The monitoring of the plant biodiversity in the four test sites should proceed for progressive levels of investigation. In order to better define species density and composition, some sampling plots have been chosen within each of the four selected sites. For evaluating plant biodiversity we used the standardised multi-scale approach proposed by Dengler (2009). For each of the study areas we applied the scheme of Dengler, placing a variable number of permanent plots, based on the extension of the area. The plots are used for both floristic census and for the analysis of plant communities. The floristic census has been carried out with periodical inspection and phenological data have been recorded, for each plant species in each plot. In order to define possible variations of distribution and/or density of plant species, their relative abundance within their environments are evaluated. To do this, an analysis of the plant communities within plot boundaries has been assessed, according to the Braun Blanquet (1964) approach. At present, a list of wild plant species have been selected, to evaluate possible hybridization with crop species. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
|
