Reptile species persistence under climate change and direct human threats in north-western Argentina.
Protected areas have been established historically in residual places where the potential for extractive uses is low, implying that places at risk are usually under-protected. Argentina is no exception, with few protected areas established in productive regions that are prone to conversion. Here, us...
por Portal Padrão
publicado
17/12/2018
10:39 AM
Distribuição espaço-temporal da precipitação e SPI no estado de Rondônia (RO), Brasil, por meio de técnicas de geoestatística.
This study had the objective of analyzing the spatial distribution pattern of the precipitation and the spatio-temporal variability of the long-term (drought) rainfall anomalies (SPI-12) in the state of Rondonia, using the Standardized Precipitation Index - SPI, by means of a geostatistical approach...
por Portal Padrão
publicado
17/12/2018
10:37 AM
Microalgae-mediated bioremediation and valorization of cattle wastewater previously digested in a hybrid anaerobic reactor using a photobioreactor: comparison between batch and continuous operation.
Scenedesmus obliquus (ACOI 204/07) microalgae were cultivated in cattle wastewater in vertical alveolar flat panel photobioreactors, operated in batch and continuous mode, after previous digestion in a hybrid anaerobic reactor. In batch operation, removal efficiencies ranges of 65 to 70% of COD, 98 ...
por Portal Padrão
publicado
17/12/2018
10:36 AM
Biofertilizer replace urea as a source of nitrogen for sugarcane production.
In this study, different nitrogen doses (0, 16, 48, 64, 80, and 96 kg ha−1 ) from two sources, biofertilizer (from anaerobic digestion of cattle wastewater) and urea, were applied to cultivate two sugarcane varieties (RB 867515 and SP 803280). °Brix values higher than 21% were obtained with appli...
por Portal Padrão
publicado
17/12/2018
10:34 AM
Improving drought management in the Brazilian semiarid through crop forecasting.
In this paper, we evaluated the performance of the model AquaCrop for crop yield forecasting in the Brazilian semiarid (BSA) using meteorological observation and Eta model seasonal climate forecasts as input data. The study area is characterized by low rainfall that is poorly distributed throughout ...
por Portal Padrão
publicado
17/12/2018
10:33 AM
Análise espacial de serapilheira foliar em parcela permanente, Amazônia Ocidental, Rondônia: comparação de diferentes métodos.
A matéria orgânica, conhecida como serapilheira, proveniente da senescência das estruturas vegetais, é de suma importância para manutenção dos ecossistemas florestais visto que, este material, nas florestas tropicais, pode representar até 90% da produtividade primária líquida. Mediante ist...
por Portal Padrão
publicado
17/12/2018
10:28 AM
Potencial do Cadastro Ambiental Rural (CAR) no controle do desmatamento em assentamentos no município de Novo Repartimento (PA).
Ao avaliar a dinâmica do desmatamento em 15% dos assentamentos federais do Estado do Pará, durante cinco anos, detectou-se haver proporcionalmente mais desmatamentos no interior dos assentamentos do que na área que os circunscreve. Assim, tem-se o Cadastro Ambiental Rural (CAR) como uma contribui...
por Portal Padrão
publicado
17/12/2018
10:26 AM
Improving the use of ground-based radar rainfall data for monitoring and predicting floods in the iguaçu river basin.
This study investigates the efficiency of correcting radar rainfall estimates using a stochastic error model in the upper Iguaçu river basin in Southern Brazil for improving streamflow simulations. The 2-Dimensional Satellite Rainfall Error Model (SREM2D) is adopted here and modified to account for...
por Portal Padrão
publicado
17/12/2018
10:24 AM
Baseline Surface Radiation Network (BSRN): structure and data description (1992-2017).
Small changes in the radiation budget at the earths surface can lead to large climatological responses when persistent over time. With the increasing debate on anthropogenic influences on climatic processes during the 1980s the need for accurate radiometric measurements with higher temporal resoluti...
por Portal Padrão
publicado
17/12/2018
10:23 AM
Ecophysiological plasticity of Amazonian trees to long‑term drought.
Episodic multi-year droughts fundamentally alter the dynamics, functioning, and structure of Amazonian forests. However, the capacity of individual plant species to withstand intense drought regimes remains unclear. Here, we evaluated ecophysiological responses from a forest community where we sampl...
por Portal Padrão
publicado
17/12/2018
10:21 AM
Photo-Fenton approach for the determination of organic nitrogen in rainwater.
The importance of taking the organic forms of nitrogen (ON) into account when estimating atmospheric nitrogen deposition has been known for a long time. However, there is still only a modest amount of data on organic nitrogen in rainwater worldwide, largely due to the difficulties and uncertainties ...
por Portal Padrão
publicado
17/12/2018
10:20 AM
Impactos das mudanças de uso da terra nas áreas prioritárias para conservação da biodiversidade no nordeste do estado do Pará, Brasil.
Este trabalho teve por objetivo identificar e quantificar a cobertura vegetal e uso da terra na MNP e comparar com as áreas prioritárias para conservação da biodiversidade. Para tanto, foi realizado o cruzamento de dados vetoriais de uso e cobertura da terra com as APCs e as áreas protegidas na...
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