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20 results for “Brazilian savannah”
Figure 2 in Food niche of Exomalopsis (Exomalopsis) fulvofasciata Smith (Hymenoptera: Apidae) in Brazilian savannah: the importance of oil-producing plant species as pollen sources
Figure 2. Estimated number of pollen types in each study area using extrapolation curves. ESP: Ecological Station of Panga, MG and SPSCN: State Park of Serra de Caldas Novas, GO.
Figs. 5–8 in Axima nordestina (Hymenoptera, Eurytomidae), a new stalk-eyed wasp from Brazilian savannah
Figs. 5–8. Axima nordestina Barbosa, Krogmann & Azevedo sp. nov., 5. Head and mesosoma, lateral view. 6. Wings, dorsal view. 7. Metasoma, lateral view. 8. Head and mesosoma, dorsal view.
Figures 10-13 in Brown-lacewings (Insecta: Neuroptera: Hemerobiidae) from Brazilian savannah in Central Brazil
Figures 10-13. Distribution of the studied Hemerobiidae species and their occurrence records to Brazil and Neotropics. 10. Hemerobius hernandezi Monserrat and Megalomus impudicus (Gerstaecker). 11. Nomerobius argentinensis González Olazo and Nomerobius cuspidatus Oswald. 12. Notiobiella Banks. 13. Nusalala tessellata (Gerstaecker). / Distribución de las especies de Hemerobiidae estudiadas y sus registros de ocurrencia en Brasil y el Neotrópico. 10. Hemerobius hernandezi Monserrat and Megalomus impudicus (Gerstaecker). 11. Nomerobius argentinensis González Olazo and Nomerobius cuspidatus Oswald. 12. Notiobiella Banks. 13. Nusalala tessellata (Gerstaecker).
Figures 1-6 in Brown-lacewings (Insecta: Neuroptera: Hemerobiidae) from Brazilian savannah in Central Brazil
Figures 1-6. Habitus of collected species of Hemerobiidae. 1. Hemerobius hernandezi Monserrat, lateral view. 2. Megalomus impudicus (Gerstaecker), lateral view. 3. Nomerobius argentinensis González Olazo, dorsal view. 4. Nomerobius cuspidatus Oswald, lateral view. 5. Notiobiella sp., lateral view 6. Nusalala tessellata (Gerstaecker), dorsal view. Scale bar: 1 mm. / Hábitos de las especies de Hemerobiidae recolectadas. 1. Hemerobius hernandezi Monserrat, vista lateral. 2. Megalomus impudicus (Gerstaecker), vista lateral. 3. Nomerobius argentinensis González Olazo, vista dorsal. 4. Nomerobius cuspidatus Oswald, vista lateral. 5. Notiobiella sp., vista lateral. 6. Nusalala tessellata (Gerstaecker), vista dorsal. Escala: 1 mm.
Data from: Temporal distribution of endophytic and exophytic insect guilds responds to host plant phenology in the Brazilian Savannah
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Abandoned pastures and restored savannahs have distinct patterns of plant-soil feedback and nutrient cycling compared with native Brazilian savannahs.
<p>Around 40% of the original Brazilian savannah territory is occupied by pastures dominated by fast-growing exotic C4 grasses, which impact ecosystem nutrient cycling. The restoration of these areas depends on the re-establishment of soil processes. We assessed how restoration of abandoned pastures through direct seeding of native species and land-management practices (burning and ploughing) affect soil nutrient cycling dynamics compared to native savannahs. We compared the activity of soil enzymes related to carbon (C), nitrogen (N) and phosphorus (P) cycling, as well as soil microbial biomass and soil chemical properties, such as pH and the concentration of N, P, potassium (K) and soil organic matter, among abandoned pastures, native savannah and restored areas. Abandoned pastures had faster nutrient turnover than native savannah, dominated by slow-growing native species. This pattern was evident from the overall higher biomass-specific enzyme activity in abandoned pastures than in native savannah. Compared with native savannah, restored areas had similar levels of soil enzyme activity, but lower microbial biomass and soil organic matter. Synthesis and application: The low enzyme activity in restored areas was likely related to a reduced soil organic carbon concentration due to practices such as burning and ploughing, rather than plant-soil feedback. The lower immobilization of nutrients in microbial biomass and lower retention of nutrients in restored areas, compared with native savannah, is expected to favour the re-establishment of fast-growing exotic species. Furthermore, the modifications of soil chemical and microbial properties related to abandonment of pastures did not influence restoration outcomes, because land-management practices applied prior to direct seedling had a major impact on the soil microbial community and soil fertility. Therefore, restoration of abandoned pastures should consider a greater focus on restoring soil carbon and nutrient cycling.</p>
Abandoned pastures and restored savannahs have distinct patterns of plant-soil feedback and nutrient cycling compared with native Brazilian savannahs.
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FIGURES 10–18 in A new phytophagous Bracon Fabricius (Hymenoptera, Braconidae) associated with Protium ovatum Engl. (Burseraceae) fruits from Brazilian savannah
FIGURES 10–18. Bracon zuleideae sp. nov. female, coloration.10, 13, 16. Habitus, lateral view. 11, 14, 17. Head, frontal view. 12, 15, 18. Habitus, dorsal view. Scale = 1.0 mm.
FIGURES 4–9 in A new phytophagous Bracon Fabricius (Hymenoptera, Braconidae) associated with Protium ovatum Engl. (Burseraceae) fruits from Brazilian savannah
FIGURES 4–9. Bracon zuleideae sp. nov. female. 4. Head, frontal view. 5. Antenna. 6. Mesosoma, dorsal view, and detail of the anterior margin of scutellum. 7. Basal lobe of tarsal claw. 8. Metasoma, dorsal view. 9. Ventral valves, lateral view.
FIGURES 1–3 in A new phytophagous Bracon Fabricius (Hymenoptera, Braconidae) associated with Protium ovatum Engl. (Burseraceae) fruits from Brazilian savannah
FIGURES 1–3. Protium ovatum Engl. (Burseraceae). 1. Branch with fruits. 2. Cross section of healthy fruit. 3. Cross section of fruit damaged by Bracon zuleideae sp. nov. larvae.
FIGURES 19–24 in A new phytophagous Bracon Fabricius (Hymenoptera, Braconidae) associated with Protium ovatum Engl. (Burseraceae) fruits from Brazilian savannah
FIGURES 19–24. Bracon zuleideae sp. nov. male, coloration.19, 22. Habitus, lateral view. 20, 23. Head, frontal view. 21, 24. Habitus, dorsal view. Scale = 1.0 mm.
Figure 3 in Food niche of Exomalopsis (Exomalopsis) fulvofasciata Smith (Hymenoptera: Apidae) in Brazilian savannah: the importance of oil-producing plant species as pollen sources
Figure 3. Absolute abundance of pollen types and the number of types observed in each sample. (A) Ecological Station of Panga, MG (ESP), and (B) State Park of Serra de Caldas Novas, GO (SPSCN).
Figure 5 in Food niche of Exomalopsis (Exomalopsis) fulvofasciata Smith (Hymenoptera: Apidae) in Brazilian savannah: the importance of oil-producing plant species as pollen sources
Figure 5. Abundance of pollen types according to grain size categories: small (S) and medium (M) in two natural areas. (A) Ecological Station of Panga, MG (ESP), and (B) State Park of Serra de Caldas Novas, GO (SPSCN).
Figure 1 in Food niche of Exomalopsis (Exomalopsis) fulvofasciata Smith (Hymenoptera: Apidae) in Brazilian savannah: the importance of oil-producing plant species as pollen sources
Figure 1. Number of Exomalopsis fulvofasciata recorded on Byrsonima flowers in the two savannah areas. Ecological Station of Panga, MG (ESP) – 1 to 9 and State Park of Serra de Caldas Novas, GO (SPSCN) – 10 to18.
Figure 4 in Food niche of Exomalopsis (Exomalopsis) fulvofasciata Smith (Hymenoptera: Apidae) in Brazilian savannah: the importance of oil-producing plant species as pollen sources
Figure 4. Abundance of pollen types according to the anther type: poricidals (P) and non-poricidals (NP). (A) Ecological Station of Panga, MG (ESP), and (B) State Park of Serra de Caldas Novas, GO (SPSCN).
Figs. 1–4 in Axima nordestina (Hymenoptera, Eurytomidae), a new stalk-eyed wasp from Brazilian savannah
Figs. 1–4. Axima nordestina Barbosa, Krogmann & Azevedo sp. nov. 1. Habitus, lateral view. 2. Head, lateral view. 3. Head, frontal view. 4. Mesosoma and petiole, dorsal view.
Figure 9 in Brown-lacewings (Insecta: Neuroptera: Hemerobiidae) from Brazilian savannah in Central Brazil
Figure 9. Population fluctuation of Hemerobiidae collected between February 2018 and May 2019 in areas of Brazilian savannah at the Parque Nacional da Chapada dos Veadeiros (PNVC), in Alto ParaÍso de Goiás, Goiás state and Parque Nacional Grande Sertão Veredas (PNGSV), in Chapada Gaúcha, Minas Gerais state, both in Brazil. / Fluctuación poblacional de Hemerobiidae registrada entre febrero 2018 y mayo 2019 en áreas de la sabana brasileña en el Parque Nacional da Chapada dos Veadeiros (PNVC), en Alto ParaÍso de Goiás, estado de Goiás y el Parque Nacional Grande Sertão Veredas (PNGSV), en Chapada Gaúcha, estado Minas Gerais, ambos en Brasil.
Figures 7-8. Sympherobius amazonicus Penny and Monserrat. 7. Habitus, lateral view. 8 in Brown-lacewings (Insecta: Neuroptera: Hemerobiidae) from Brazilian savannah in Central Brazil
Figures 7-8. Sympherobius amazonicus Penny and Monserrat. 7. Habitus, lateral view. 8. Distribution records of S. amazonicus and Sympherobius Banks in Brazil and the Neotropics. / Sympherobius amazonicus Penny y Monserrat. / Sympherobius amazonicus Penny and Monserrat. 7. Hábito, vista lateral. 8. Registros de distribución de S. amazonicus y Sympherobius Banks en Brasil y el Neotrópico.
Data from: Long-distance pollen and seed dispersal and inbreeding depression in Hymenaea stigonocarpa (Fabaceae: Caesalpinioideae) in the Brazilian savannah
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Benthic macroinvertebrates in a protected area within the Brazilian savannah
<p>Collection.</p>
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