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| Vasconcellos,Alexandre; Andreazze,Ricardo; Almeida,Adriana M.; Araujo,Helder F. P.; Oliveira,Eduardo S.; Oliveira,Uirandé. |
| Insects are essential to tropical ecosystems functioning. In semi-arid regions, the increase in abundance and/or activity (e.g. reproduction and foraging behavior) of insects is usually associated with climatic variables. The present study investigates which climatic variables are best predictors of insect abundance in an area of Caatinga in northeastern Brazil. Individuals were sampled for 24 months using Malaise and pitfall traps, and beating trays. A total of 58925 individuals belonging to 20 insect orders were collected. The most abundant orders were Hymenoptera, Diptera, Collembola and Coleoptera. Most orders studied showed a clear maximum abundance in the rainy season. Rainfall and humidity were the best predictors of insect abundance in the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Abundance; Climatic variables; Insect availability; Neotropical region. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262010000300019 |
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| Attias,Nina; Raíces,Daniel S. L.; Pessoa,Flávia S.; Albuquerque,Hermano; Jordão-Nogueira,Tássia; Modesto,Thiago C.; Bergallo,Helena de G.. |
| The spiny rats of the genus Trinomys Thomas, 1921 have a broad distribution in the Atlantic Forests of southeastern Brazil. However, some species are known only from their type locality and adjacent areas. In our study, nine areas in the state of Rio de Janeiro were surveyed and three species of the genus were captured - Trinomys dimidiatus (Günther, 1877), T. setosus (Desmarest, 1817) and T. gratiosus bonafidei (MOOJEN, 1948). We extended the distribution of T. gratiosus bonafidei in 100 km, in a straight line to the northwest, and into an area of Semidecidual Seasonal Forest. We captured T. setosus, which had not been previously recorded in the state, in the municipality of Cambuci, extending its distribution 150 km, in a straight line to the east of its... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ecoregions; Climatic variables; Distribution models; Altitude. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702009000200013 |
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| Vefago,Manoela Bez; Silva,Ana Carolina da; Cuchi,Tarik; Santos,Guilherme Neto dos; Nunes,Amanda da Silva; Rodrigues Júnior,Luiz Carlos; Lima,Carla Luciane; Gross,Aline; Kilca,Ricardo de Vargas; Higuchi,Pedro. |
| ABSTRACT: The natural regeneration process is essential for forest maintenance since it is critical for establishing new tree individuals. This study aimed to improve the understanding of the regenerative component dynamics of Araucaria Forests in Southern Brazil. We investigated the effects of climate, light, tree component structure and anthropogenic disturbance on tree species regeneration. Regenerating communities from six different fragments in forest remnants of the “Planalto Sul Catarinense” region was evaluated in permanent plots two years after the first inventory. The following demographic rates were determined: recruitment, mortality, net change in the number of individuals and the changes to both upper and lower height classes. The following... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Forest dynamics; Cattle disturbance; Climatic variables; Mixed ombrophyllous forests. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162019001500405 |
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| Neumann,Micheline Krüger; Schneider,Paulo Henrique; Schmitt,Jairo Lizandro. |
| Cyathea corcovadensis (Raddi) Domin occurs in northeastern, southeastern and southern Brazil, being widely distributed in the last. This was a three-year study, conducted from August 2008 to July 2011, in which we evaluated C. corcovadensis in a subtropical forest in southern Brazil. For the first year (August 2008 to July 2009), we monitored 30 plants on a monthly basis in order to analyze phenological events (vegetative and reproductive) and caudex growth. We also estimated the ages of the plants. Except in June and July of 2009, monthly leaf emergence and senescence were continuous and irregular, which prevented total leaf abscission, during that first year. Leaf emergence, senescence and fertility correlated with photoperiod, temperature and plant... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Growth rates; Monitoring; Tree fern; Climatic variables. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062014000200014 |
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| Registros recuperados: 10 | |
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