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- Abundância e diversidade da ordem Coleoptera em vinhas de diferentes regiões vinícolas de PortugalPublication . Taranto, Luisa; Rodrigues, Isabel; Villa, Maria; Pereira, J.A.Os insetos da ordem Coleoptera desempenham um papel fundamental na manutenção e incremento da sustentabilidade dos ecossistemas agrários, ao servir de suporte a relevantes serviços ecossistémicos. Atualmente, são o maior grupo de insetos já descritos e estão presentes em quase todos os ambientes agrícolas. Na vinha, os coleópteros podem ocupar diferentes nichos ecológicos, a destacar a ação predadora de algumas famílias que se alimentam de pragas importantes da videira. Neste sentido, no presente trabalho procedeu-se à avaliação da abundância e diversidade das famílias de coleópteros na copa da videira e no coberto vegetal do solo de vinhas de diferentes regiões vinícolas portuguesas nomeadamente Região Demarcada do Douro, Bairrada, Beira Interior, Península de Setúbal, Trás-os-Montes e Vinhos Verdes. Para tal, em 2019, em três períodos distintos (julho, setembro e outubro) procedeu-se à amostragem de 36 vinhas dispersas nas diferentes regiões vinícolas. Em cada parcela, foram colhidas 20 amostras, 10 na copa da videira e 10 no coberto vegetal, utilizando a técnica de varredura. No total foram capturados 2954 indivíduos pertencentes a 36 famílias de Coleoptera. As famílias mais abundantes foram Chrysomelidae, Coccinellidae e Latridiidae. Os resultados apontam para uma maior abundância e diversidade de Coleoptera na Região Demarcada do Douro. Em todas as regiões vinícolas, o maior número de indivíduos foi observado no coberto vegetal em julho. O coberto vegetal mostrou ser uma zona importante de Coleoptera, provavelmente, uma vez que possui fontes alternativas de alimento, maior humidade e pode servir de abrigo para a presença destes artrópodes.
- Response of the Coccinellidae community within sustainable vineyards to the surrounding landscapePublication . Taranto, Luisa; Rodrigues, Isabel; Santos, Sónia A.P.; Villa, Maria; Pereira, J.A.The family Coccinellidae (Coleoptera) includes important predatory natural enemies in agricultural crops. To survive, this group uses different occurring resources across the landscape; therefore, the landscape can influence the Coccinellidae community in agroecosystems. In this context, this work aims to evaluate the response of the Coccinellidae community to the landscape context within a gradient of distances from vineyards managed under sustainable production methods. For that, Coccinellidae were sampled in thirty-five vineyards distributed by six wine Protected Designation of Origin (PDO) regions of Portugal, and landscape metrics—composition and configuration—were calculated in a 2000 m, 1500 m, 1000 m, 750 m, and 500 m buffers around the vineyards. Then, Coccinellidae species were identified, and the response of the Coccinellidae to the landscape metrics was analyzed. In total, 326 Coccinellidae from 21 species were collected. The most abundant species were Scymnus apetzi, Scymnus interruptus, Scymnus subvillosus, Coccinella septempunctata, and Stethorus pusillus, which together represented 83.4% of the total collected individuals. Most specimens were concentrated in July and at the vegetation cover. Results from the statistical analysis (Generalized Linear Mixed Models) indicated that the presence of seminatural habitat surrounding the crop may favor Coccinellidae, while habitat fragmentation seems detrimental for them. The potential relevance of the identified Coccinellidae for pest control in vineyards is discussed.
- Abundance and diversity of the order Coleoptera in vineyards from different wine regions of PortugalPublication . Taranto, Luisa; Pereira, J.A.; Rodrigues, IsabelInsects of the order Coleoptera plays an essential role in managing and enhancing the sustainability of agricultural ecosystems by supporting relevant ecosystem services. Currently, they are the largest group of insects ever described and they are present in almost all agricultural environments. In vineyards, Coleoptera may occupy different ecological niches, highlighting the predatory action of some families against important vine pests. In this sense, the present study aimed to evaluate the abundance and diversity of Coleoptera’s families and species of Coccinellidae in the vine canopy and vegetation cover of vineyards from different Portuguese Wine Regions, namely, Bairrada, Beira Interior, Douro, Península de Setúbal, Trás-os-Montes, and Vinhos Verdes. For this, in 2019, on three different periods (July, September, and October), the vegetation cover of 36 vineyards scattered in the different wine regions were sampled. For each plot, 20 samples were collected, ten in the canopy and ten on the vegetation cover, using the sweeping technique. In total 2954 Coleoptera individuals were collected belonging to 36 families, among these, 315 were Coccinellidae grouped in 22 species. The most abundant families were Chrysomelidae, Coccinellidae and Latridiidae. For Coccinellidae species, the most observed ones were Scymnus apetzi, Scymnus interruptus and Coccinella septempunctata. Results points toward a higher abundance of Coleoptera families and Coccinellidae species at the Douro Region. Most specimens were concentrated in July and at the vegetation cover, for all the Wine Regions. Vegetation cover was found to have a great importance in Coleoptera and Coccinellidae refugee and performance shelter as a microhabitat within the vineyards. The diversity index of Coleoptera indicates a higher diversity in July at Douro grapevines. Also, for Coccinellidae species, the higher diversity in canopy and in vegetation cover was observed in July and September, respectively in the same region. Further studies on pests and natural enemies’ dynamics, the use of different variables and increase sampling dates should address non explained patterns in this study.
- Intermediate fragmentation surrounding vineyards favours the Coleoptera community within the cropPublication . Taranto, Luisa; Rodrigues, Isabel; Santos, Sónia Marina Figueiredo Abrantes; Villa, Maria; Pereira, J.A.Insects of the order Coleoptera play an essential role in agricultural sustainability by supporting many ecosystem services (such as biological control, nutrient cycling or pollination). In agroecosystems, the Coleoptera community may be influenced by the surrounding landscape, which can provide living resources, like food or shelter, during different seasons, originating spillover movements between different environments. The present study aimed to evaluate the response of the Coleoptera community to the landscape surrounding vineyards at different buffers. For that, Coleoptera were sampled in six wine protected designation of origin (PDO) regions of Portugal (35 vineyards), and landscape configuration and composition metrics were calculated at buffers of 500, 750, 1000, 1500 and 2000 m radii around the vineyards. In total, 2954 Coleoptera individuals belonging to 36 families were collected. The most abundant families were Chrysomelidae, Coccinellidae and Latridiidae. Results indicated that intermediate habitat fragmentation levels, particularly in semi-natural areas and vineyards, favoured Coleoptera biodiversity in vine-producing regions. Moreover, the range of activity of Coleoptera seems to be larger This work constitutes an important contribution to understanding the response of the Coleoptera community to the landscape context in vineyards in Portugal and contributes to the theoretical framework about the influence of habitat fragmentation on biodiversity.