Distribuição de macrófitas aquáticas em relação a variáveis ambientais em ecossistemas lóticos da Bacia do rio Itanhaém

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Integração entre um modelo de simulação hidrológica e Sistema de Informação Geográfica na delimitação de zonas tampão ripárias

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Caracterização ambiental da bacia hidrográfica do Córrego Rico, Jaboticabal - SP

Pós-graduação em Agronomia (Produção Vegetal) - FCAV

Indicadores ambientais e planejamento integrado dos recursos hídricos na microbacia do córrego do coqueiro

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Dinâmica das comunidades de aves no mosaico de hábitats do Pantanal do Rio Negro, MS

Pós-graduação em Ciências Biológicas (Zoologia) - IBB

Biologia e ciclo de vida de Astyanax cf. scabripinnis paranae Eigenmann, 1914 (Characidae, Tetragonopterinae), no Ribeirão Grande, Parque Estadual da Serra do Mar, núcleo Santa Virginia, SP

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Ecossistemas de referência para restauração de matas ciliares: existem padrões de biodiversidade, estrutura florestal e atributos funcionais?

A utilização de ecossistemas naturais como meta a ser atingida e a seleção de indicadores para monitoramento dos projetos são temas controversos na ciência e na prática da restauração. Analisamos a vegetação ripária em quatro remanescentes de Floresta Estacional Semidecidual, para verificar se alguns atributos dessas comunidades se repetem em diferentes locais, podendo ser referência para esta região fitogeográfica. Instalamos dez parcelas de 100 m² em cada local, amostramos plantas lenhosas com altura ≥ 0,5 m, divididas em estrato regenerante (DAP < 5 cm) e estrato arbóreo (DAP ≥ 5 cm) e classificamos as espécies com base em atributos funcionais, raridade e status de ameaça. Contabilizamos lianas, pteridófitas e árvores com epífitas. As variáveis estruturais de densidade (estrato arbóreo e regenerante e árvores com epífitas), área basal e cobertura de copas não diferiram entre locais. Foram pouco variáveis entre as áreas a riqueza rarefeita para 100 indivíduos no estrato arbóreo, a riqueza total estimada por Jackknife e as proporções de espécies raras, tolerantes à sombra, de crescimento lento e zoocóricas. Porém, analisando-se a proporção de indivíduos na comunidade, somente a tolerância à sombra foi pouco variável. Para as outras variáveis analisadas não existem padrões que possam ser considerados referência para esta região fitogeográfica. No entanto, ainda que para algumas variáveis existam padrões, sua utilização como meta da restauração depende de: 1) prazos longos para monitoramento de projetos e, sobretudo, 2) estudos que demonstrem que os ecossistemas restaurados podem, um dia, igualar aos ecossistemas pré-existentes.

Hydrosedimentological disequilibrium in a small, urbanized watershed

AIM: In this paper we estimate the sediment yield and other related information for a small urbanized watershed, located in Sorocaba, São Paulo State. The driving forces that produce the observed scenario are presented and discussed; METHODS: Over a year, water samples and hydrologic information concerning the river channel were collected monthly at one sampling site. In the laboratory, water samples were oven dried (80 ºC) and the total suspended solid weighed for each sample. To estimate sediment yield we used Colby's simplified method. The sediment delivery ratio (SDR) was estimated using two methods: the relief - length ratio and the bifurcation ratio; RESULTS: The annual sediment yield estimated for the period was 1,636.1 t. The total specific sediment yield was 541.7 t.km -2.y-1. Bedload was the predominant fraction. The SDR changed between 60 and 66% according to the method employed. CONCLUSIONS: The main driving forces of hydrosedimentological disequilibrium are the lack of riparian vegetation, the dumping of construction wastes at inadequate sites, and the launching of untreated sewage. Hence, if these three factors were controlled, a significant improvement in the environmental quality, particularly water quality, might be achieved.

Dryinidae (Hymenoptera, Chrysidoidea) da estação ecológica de Jataí, Luiz Antônio, SP, Brasil

Pós-graduação em Agronomia (Entomologia Agrícola) - FCAV

Diapriinae (Hymenoptera, Diapriidae) da estação ecológica de Jatí, no município de Luiz Antônio

Pós-graduação em Agronomia (Entomologia Agrícola) - FCAV

Seasonal variability of a conditional stability constant and the characterization of sedimentary humic substances from typical agricultural and urban areas

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

The influence of habitat homogenization on the trophic structure of fish fauna in tropical streams

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Petrified Marattiales pinnae from the Lower Permian of North-Western Gondwana (Parnaiba Basin, Brazil)

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

How does tourist monitoring alter fish behavior in underwater trails?

Nature based tourism is becoming more popular because it is perceived as a solution to the conflict between conservation and economic exploitation. Nevertheless, it is known to cause several effects. This paper reports findings whereby monitored tourism avoids triggering adverse effects for social cichlid fish species, Crenicichla lepidota. Measures used included aggression toward territorial intruders and the number of nests built in pristine reference areas for monitored and in non-monitored tourist areas. We observed suppressed aggressive behavior and suppressed nesting only in the non-monitored area. We conclude that by monitoring visits, and using techniques including avoiding stepping on the river bed, reducing the number of visitors, prohibiting fish feeding and protecting riparian vegetation, it is possible to avoid the enduring damage caused by nature tourism. (C) 2014 Elsevier Ltd. All rights reserved.

Classificação e mapeamento de áreas de risco de enchentes e inundações no bairro Jardim Inocoop - Rio Claro - SP

In the last few decades, Brazil has experienced an accelerated urbanization process in which many cities have grown in a disorderly way occupying environmentally fragile areas unsuitable for habitation. Anthropogenic actions such as high levels of impermeable soil, structural changes in watercourses, lack of riparian vegetation, illegal presence of trash and rubbish along the river banks added to irregular settlements in floodplains result in the rise of high risk areas. When accompanied by intense and prolonged rainfall phenomena, those areas have been the scenery of serious accidents such as floods. This study aims to classify the level of the risk of floods in the neighborhood of Jardim Inocoop, in the town of Rio Claro, São Paulo countryside, Brazil. One of the main technical support to tackle this issue is the identification and classification of the risks. In order to classify the risk level of flood in this case study, the methodology adopted was developed by the Ministry of Cities and Technology Research Institute, and take into account the arrangement of the hydrological scenario, vulnerability of households and dangerous process according to the distance of the houses from the axis of drainage. Therefore, the risk levels adopted to classify are listed below: very high (MA), high risk (A), moderate (M) and low risk (B). In conclusion, it is imperative to develop prevention plans in order to avoid or to minimize the damages caused by natural disasters. Therefore, the zoning of the risk sceneries remains as an important issue once it helps to identify the areas with high level risk of flood. Consequently, the occupation must be regulated where there is low or absent risk and it must be often forbidden where the high risk of flood is detected. Thus, the present study remains as an attempt to notify the risk of floods through its spatialization on a map, remainig...(Complete abstract click electronic access below)