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

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Presentation on theme: "Rice farming vs. Biodiversity Main Problems in Mondego Lowlands David Rodrigues Dep. Forest Resources, ESAC, Coimbra, Portugal."— Presentation transcript:

1 Rice farming vs. Biodiversity Main Problems in Mondego Lowlands David Rodrigues Dep. Forest Resources, 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 cropMain problems: - LASER leveling of the fields - Pesticides applied - Dried fields after rice crop

4 Anas platyrhynchos Anas streperaAnas crecca Anas clypeata Anas penelopeAnas acuta Anas querquedulaAythya ferinaAythya fuligula

5 Study Area

6 Old traditional ricefields Vouga Lowlands

7 Procambarus clarkii Chironomus spp

8 Actions tested creating small areas (20 to 50 m 2 ) free of vegetation, during rice production creating small areas (20 to 50 m 2 ) free of vegetation, during rice production wise use of pesticides and herbicides during the rice production – integrated production wise use of pesticides and herbicides during the rice production – integrated production flooding of rice fields after crop harvest flooding of rice fields after crop harvest

9 9 Results Quinta do Canal – 08/1998 1200 Anas platyrhynchos Quinta da Foja – 08/1995 1600 Anas platyrhynchos

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

11 Results Plegadis falcinellus

12 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 13 Conclusions (cont.) - A gro-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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