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Ecological vineyards help protecting bird population in the environment

March 06, 2019

Ecological farmlands help protecting bird populations and reducing the effects of global change on the environment, according to a study published in the journal Agriculture, Ecosystems and Environment by the experts Joan Real, Àlex Rollan and Antonio Hernández-Matías, from the Conservation Biology Group of the Faculty of Biology and the Biodiversity Research Institute of the University of Barcelona (IRBio).

According to the study, which counted on the support from Torres Family, from Vilafranca del Penedès (Spain), the ecological viticulture increases the abundance and amount of species of farmland birds, and favours the insectivore bird populations that help the natural control of plagues in ecological crops. This agricultural practise helps improving the resilience of farmland birds -which are especially sensitive to environmental changes- towards the effects of global warming.

Farmland birds: at risk due intensive agriculture and climate change

Changes in agricultural production systems -from traditional to intensive- generated several environmental impacts on the environment, such as the loss of biodiversity. At the moment, intensive agricultural exploitation in Europe caused the loss of millions of farmland birds, which are also affected by global change.

In this context, the practice of ecological viticulture has spread over the last years in the sector of the vineyards, one of the most traditional cultures in the country. In Catalonia, this sector represents the first important ecological crop in the agricultural field, and one of every four vineyards has its origins in ecological agricultural production. Without insecticides, herbicides or chemical fertilizers, this practice includes a series of ecological and integrated techniques (mechanical control of plagues, etc.) in a context of a growing social interest for sustainable practices with biodiversity and the environment.

What is the impact of ecological crops in farmland birds?

The beneficial effects of the ecological crops of vineyards on several organisms were known from years ago. "However -says Àlex Rollan, first author of the study-, there wasn't much information on their real impact in the community of farmland birds".

In this context, from 2014 to 2015, UB-IRBio experts created bird censuses in a total of thirty-three vineyard parcels -designation of Origin Penedès- to see how the practice of ecological agriculture affected the community of farmland birds -insectivore ones mostly- and the most vulnerable species to climate change.

The new study describes for the first time the positive impact of the ecological viticulture on the abundance and amount of species of insectivore birds in the Mediterranean vineyards. The presence of herbaceous cover -a growing practice in European vineyards- has a beneficial effect on insectivore birds, in particular in spring and other seasons when people work on ecological crops, according to the study carried out by the Conservation Biology Group (UB-IRBio).

A more environment-friendly agricultural production

Birds are sensitive to changes and impacts that occur in the ecosystems worldwide. "Therefore, they are perfect bioindicators, since they show the state of conservation of natural systems"; says Joan Real, head of the team of Conservation Biology, linked to the Department of Evolutionary Biology, Ecology and Environmental Sciences of the Faculty of Biology and IRBio. "Knowing the factors that can interact with these bioindicators helps us getting information to improve the management of natural habitats and environmental sustainability", notes Joan Real.

The new study, published in the journal Agriculture, Ecosystems and Environment provides practical information for the sector of ecological viticulture and will help shape a management for a "more sustainable agricultural production regarding biodiversity conservation in the rural environment, and in particular, those birds that are endangered due the agricultural intensification and climate change", notes Antonio Hernández-Matías.

Since 1992, the Biology Conservation Group (UB-IRBio) and Torres Family Foundation, from the company with the same name, have launched several research projects and initiatives in the field of conservation of natural heritage and the design of new management tools for the conservation of biodiversity with a global and efficient perspective.

University of Barcelona

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