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Rice farming vs. Biodiversity Main Problems in Mondego Lowlands

Rice farming vs. Biodiversity Main Problems in Mondego Lowlands. David Rodrigues Dep . Forest Resources , ESAC, Coimbra, Portugal.

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Rice farming vs. Biodiversity Main Problems in Mondego Lowlands

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  1. Rice farming vs. Biodiversity Main Problems in Mondego Lowlands David Rodrigues Dep. ForestResources, ESAC, Coimbra, Portugal

  2. Results of the Project PAMAF 4031 “Ecology and Game Management of Anatidae and Rallidae on Mondego Lowlands. Correlations with Rice Production, Nature Conservation and Sanity”, that tested some management actions of rice fields to improve conditions for waterfowl.

  3. Main problems:- LASER leveling of the fields- Pesticides applied- Dried fields after rice crop

  4. Anas platyrhynchos Anas strepera Anas crecca Anas clypeata Anas penelope Anas acuta Anas querquedula Aythya ferina Aythya fuligula

  5. Study Area

  6. Old traditional ricefields Vouga Lowlands

  7. Procambarusclarkii Chironomusspp

  8. Actions tested • creating small areas (20 to 50 m2) free of vegetation, during rice production • wise use of pesticides and herbicides during the rice production – integrated production • flooding of rice fields after crop harvest

  9. Results Quinta do Canal – 08/1998 1200 Anasplatyrhynchos Quinta da Foja – 08/1995 1600 Anasplatyrhynchos

  10. Results Quinta do Canal – 01/1995 92 Anas acuta 135 Anas penelope 251 Anas platyrhynchos 1272 Anas clypeata

  11. Results Plegadisfalcinellus

  12. Conclusions - Rice fields are important as feeding habitat for many waterbirds of SPAs and IBAs; - Priority areas for agro-environmental incentives of rice production should be extended until 15 km from SPAs or IBAs for waterbirds, and incentives can be in a inverse order to the distance from these areas – e.g. 5, 10, 15km;

  13. Conclusions (cont.) - Agro-environmental incentives of rice production should include flooding of rice fields after crop harvest, at least from early November to end of January, on at least 50% of the subsidized area; - Waterfowl managers should consider the management of rice fields as bird feeding habitat during rice crop, by reducing the density of seeding and/or creating areas free of vegetation.

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