scholarly journals Ichthyofauna as an environmental quality indicator of the Bertioga Channel, São Paulo (Brazil)

2017 ◽  
Vol 65 (1) ◽  
pp. 29-43 ◽  
Author(s):  
June Ferraz Dias ◽  
Maria Luiza Flaquer da Rocha ◽  
Thassya Christina dos Santos Schmidt ◽  
Bárbara Capelari Villamarin ◽  
Diego Barbosa Morais
Keyword(s):  
Environmental Quality ◽  
Abiotic Factors ◽  
Fish Fauna ◽  
Sao Paulo ◽  
Estuarine Fish ◽  
Otter Trawl ◽  
São Paulo ◽  
Monthly Basis ◽  
The North ◽  
Abc Analysis

Abstract The aim of this study was to investigate the ichthyofauna structure in the region of the north outfall of the Bertioga Channel (São Paulo, Brazil) and the possible effects of the environmental quality loss. The samples were collected in a monthly basis, from September to December 2005, at two oceanographic stations with an otter-trawl. The fish fauna structure was evaluated by ecological indicators and the environmental quality evaluated by the ABC analysis and the Estuarine Fish Communities Index (EFCI). A total of 1553 individuals from 50 species were sampled. Ariidae and Sciaenidae amounted to 60 % and Cathorops spixii represented 36 % of all specimens collected. The highest richness and ecological diversity were recorded in December, while the highest numerical abundance was found in October. The majority of the species were represented by juveniles. The cluster analysis and canonical correspondence analysis showed a consistent and clear difference between the sampling stations, and the abiotic factors analyzed (temperature, depth and salinity) do not seem to have influence on the community structure. The ABC analysis suggested a moderate disturbed environment and the EFCI allowed classifying the area as "poor", due to the 12 metrics analyzed, concerning the reduction of the species diversity, composition and abundance, and modifications in the nursery function and trophic integrity of the area. Future studies should focus on jointly analyze chemical indicators of water and sediment with the biological indicators, to confirm the ichthyofaunal condition of the north outfall of the Bertioga Channel.

scholarly journals ENVIRONMENTAL DRIVERS OF FISH ASSEMBLAGES FROM THE SHALLOW INFRALITTORAL AREAS OF THE PARANAGUÁ BAY, SOUTHERN BRAZIL

2020 ◽  
Vol 24 (04) ◽  
pp. 917-927
Author(s):  
Paula Nakayama ◽  
◽  
Alberto Carvalho Peret ◽  
Johnatas Adelir-Alves ◽  
Olímpio Rafael Cardoso ◽  
...  
Keyword(s):  
Fish Assemblages ◽  
Diversity Index ◽  
Abiotic Factors ◽  
Sampling Site ◽  
Fish Fauna ◽  
Environmental Drivers ◽  
Estuarine Fish ◽  
Otter Trawl ◽  
Paranaguá Bay ◽  
Wiener Diversity Index

The composition of estuarine fish fauna is dynamic and complex. Despite the variation in fish fauna in estuaries, it is possible to observe some species associated with microhabitats. The assemblage composition of these communities is apparently derived from habitat selection. The aim of this study was to assess the structure of the demersal fish fauna of the Paranaguá Bay and its relationship with biotic and abiotic factors. To this end, monthly collections were conducted using an otter trawl, from October 1999 to September 2000, at five sites in the shallow infralittoral. Biotic (organic matter, and invertebrates) and abiotic factors (salinity, temperature, pH, dissolved oxygen, seston, and nutrients) were recorded during sampling. A total of 6,623 individuals were captured, belonging to 2 species of Chondrichthyes and 53 species of Actinopterygii (26 families). Sciaenidae was the most representative in terms of richness, with 11 species, and Ariidae was the most representative in terms of abundance. The catfish Cathorops spixii was the most abundant species, representing 21 % of the entire catch. There were significant differences in the composition and abundance of the fish fauna among the studied areas, as evidenced by the Shannon-Wiener diversity index. Such differences seem to be related to the complexity of habitats, which occur due to different types of bottom cover found at each sampling site. The abiotic variables indicated little influence on the structure of the fish assembly. These results contribute to a better understanding of the fish fauna from the shallow infralittoral areas of the Paranaguá Bay, and provide data to decision makers for better implementation of management and conservation measures.

scholarly journals Bird communities in two fragments of semideciduos forest in rural São Paulo state

2003 ◽  
Vol 63 (2) ◽  
pp. 307-319 ◽  
Author(s):  
D. D. Pozza ◽  
J. S. R. Pires
Keyword(s):  
Environmental Quality ◽  
Bird Community ◽  
Sao Paulo ◽  
São Paulo ◽  
Semideciduous Forest ◽  
Value Analysis ◽  
Quantitative Survey ◽  
Paulo State ◽  
Number Of Species ◽  
São Paulo State

A quali-quantitative survey was done in two fragments (75 and 100 ha) of semideciduous forest in rural São Paulo State. The aim was to characterize the bird community according to richness, abundance, and occurrence frequency in these areas. The qualitative survey showed 145 species in the Estação Ecológica de São Carlos - EESCar (Brotas) - and 173 in the Fazenda Santa Cecília - FSC (Patrocínio Paulista), while the quantitative survey showed the presence of 60 and 72 species in EESCar and FSC respectively. The isolation and the lower environmental quality of the EESCar fragment may be responsible for the lower number of species in this area compared to that of FSC. Abundance index value analysis (IPA) showed that both areas have a large number of species with low IPA and few species with intermediate or high IPA compared to the pattern observed in other surveys. At FSC, a larger number of occurrences of species in danger of extinction in São Paulo State was also observed. Apparently, the FSC fragment had better environmental quality for sheltering a larger number of species, including the endangered ones. The study of the community of birds is important in planning management and conservation of natural areas.

scholarly journals Structural and geochronological constraints on the evolution of the Juréia Massif, Registro Domain, State of São Paulo, Brazil

2007 ◽  
Vol 79 (3) ◽  
pp. 441-455 ◽  
Author(s):  
Cláudia R. Passarelli ◽  
Miguel A.S. Basei ◽  
Hélcio J. Prazeres-Filho ◽  
Oswaldo Siga-Jr. ◽  
Gergely A.J. Szabó ◽  
...  
Keyword(s):  
Shear Zone ◽  
Sao Paulo ◽  
Amphibolite Facies ◽  
Metamorphic Event ◽  
São Paulo ◽  
Paulo State ◽  
The North ◽  
Domain State ◽  
Geochronological Constraints ◽  
Shear System

The Juréia Massif, southeastern São Paulo State (Brazil), is part of the Registro Domain, limited to the north by the Cubatão-Itariri Shear System and to the south by the Serrinha Shear Zone. Mostly composed of migmatitic granitegneiss rocks, represents a Paleoproterozoic terrane (1.9-2.2 Ga) strongly deformed during the Neoproterozoic (750-580 Ma). The present tectonic scenario was established at the end of the Neoproterozoic, as a result of collages associated with the formation of Western Gondwana. The Ponta da Juréia, our study area within the Juréia Massif, is constituted by paragneisses (garnet-muscovite-biotite gneisses). The monazite U-Pb age of 750 Ma is related to a main regional metamorphic event that reached the high amphibolite facies, recorded in rocks from the Itatins Complex and Cachoeira Sequence as well, which also belongs to the Registro Domain. The paragneissic rocks of this study are affected by the E-W-trending Serrinha Shear Zone, registering a predominantly dextral movement. Biotite K-Ar ages of 482 ± 12 Ma may represent later movements and reflect the younger ages of reactivation of the major lineaments and juxtaposition of the tectonic blocks involved.

scholarly journals ICHTHYOFAUNA IN THE INNER CONTINENTAL SHELF NEXT TO THE PARANAGUÁ ESTUARINE COMPLEX, SOUTHERN BRAZIL

2021 ◽  
Vol 46 (4) ◽  
pp. 1-13
Author(s):  
Cesar SANTOS ◽  
Roberto SCHWARZ JUNIOR ◽  
Helen Audrey PICHLER ◽  
Olímpio Rafael CARDOSO ◽  
Marcelo Renato LAMOUR ◽  
...  
Keyword(s):  
Continental Shelf ◽  
Fish Assemblages ◽  
Fish Fauna ◽  
Temporal Variations ◽  
Otter Trawl ◽  
Rainfall Regime ◽  
Wet Season ◽  
Environmental Characteristics ◽  
The North ◽  
Inner Continental Shelf

The composition and structure of fish assemblages in the inner continental shelf of the Paraná State are affected by cold fronts and the rainfall regime. Data from fishing activities in this region, as well as the analysis of environmental characteristics, are the main tools available for understanding fish dynamics, under influence of increasing human activities. In order to better understand patterns and temporal variations in fish assemblages in the inner continental shelf of the Paraná State, a total of 24 double trawls were performed with an otter trawl between August 2000 and July 2001, in two sampling areas, the North area in front of the northern mouth of the Paranaguá Estuary Complex, and the South area, in front of the Leste beach. A total of 45,277 fish specimens belonging to 35 families and 97 species were caught. Sciaenidae was the most abundant family, with 37.1% of the total number of individuals caught, and with the highest richness (18 species). Statistical analyses evidenced significant differences in environmental characteristics and in fish fauna, and that both areas disturbances were observed in the fish assemblages during the dry and wet season, being more intense in the Southern area, disturbances that would be related to the shrimp fishing present in the two areas sampled in this study.

scholarly journals Assessment of the environmental quality of the Cachoeirinha-Invernada watershed, Guarulhos municipality (State of São Paulo, Brazil), as an urbanization reflex

2019 ◽  
Vol 46 (2) ◽  
Author(s):  
Reinaldo Romero VARGAS ◽  
Antônio Roberto SAAD ◽  
Fabrício Bau DALMAS ◽  
Regina De Oliveira Moraes ARRUDA ◽  
Anderson Targino da Silva FERREIRA
Keyword(s):  
Environmental Quality ◽  
Sao Paulo ◽  
São Paulo

Avaliação da qualidade ambiental da bacia hidrográfica Cachoeirinha-Invernada, município de Guarulhos (estado de São Paulo, Brasil), como um reflexo de urbanização. A urbanização das regiões sudeste e sul do Brasil tem sido caracterizada pela falta de planejamento geotécnico, o que causou uma série de desastres naturais induzidos pela interferência antrópica. O objetivo deste trabalho é a análise da qualidade ambiental da Bacia Hidrográfica Cachoeirinha Invernada, localizada no município de Guarulhos. Para tal análise, foram realizados:  levantamento das condicionantes geológicas e geomorfológicas, análise interpretativa do mapa de uso e ocupação da terra e da qualidade das águas superficiais, levantamento do sistema urbano de saneamento básico, bem como a verificação da aplicação da legislação ambiental. Os resultados obtidos atestam que a Bacia Hidrográfica Cachoeirinha-Invernada está amplamente degradada, devido à urbanização caracterizada por altas densidades de ocupação em morros e vales, terrenos em que o ambiente físico é muito frágil para tal demanda. As principais evidências dos processos geológicos correspondem à degradação do solo por erosão, movimentos de massa e inundações, incluindo o assoreamento dos vales. As ocupações de Áreas de Preservação Permanente ocorrem no topo das colinas, áreas com grande declividade, margens de riachos e nascentes. A falta de esgotos sanitários ligados à rede de esgotos, o descarte de efluentes diretamente em riachos e valas, além do descarte inadequado de resíduos sólidos contribuíram para a baixa qualidade ambiental avaliada na Bacia Hidrográfica Cachoeirinha-Invernada.

The Spanish-Dutch War and the Policy of the Spanish Crown toward the Town of Sao Paulo

Itinerario ◽  
2002 ◽  
Vol 26 (1) ◽  
pp. 107-125
Author(s):  
Rafael Ruiz
Keyword(s):  
Sao Paulo ◽  
Spanish Empire ◽  
Dutch Republic ◽  
São Paulo ◽  
The South ◽  
The North ◽  
South Of Brazil ◽  
The Town ◽  
Made In ◽  
United Provinces

Historians have made in depth studies on the consequences of the Dutch incursions and invasion into the north and northwest of Brazil, for both the Spanish Empire and the United Provinces of the Dutch Republic. The purpose of this paper is to show that the war between Spain and the Dutch Republic also affected the south of Brazil and that it forced Spain to adopt measures that altered the policy of the Spanish Crown regarding Sao Paulo.

scholarly journals Spatio-temporal variation in surf zone fish communities at Ilha do Cardoso State Park, São Paulo, Brazil

2017 ◽  
Vol 41 (2) ◽  
pp. 239-253
Author(s):  
Jana Menegassi del Favero ◽  
June Ferraz Dias
Keyword(s):  
Seasonal Changes ◽  
Fish Community ◽  
Surf Zone ◽  
High Tide ◽  
Fish Communities ◽  
Fish Fauna ◽  
Sao Paulo ◽  
Biological Data ◽  
Seasonal Effect ◽  
São Paulo

In order to analyze the time-space variation of the fish fauna in the surf zone fish communities at Ilha do Cardoso State Park, São Paulo, Brazil, four consecutive hauls were done over a year on three beaches with different degrees of exposure, at low and high tide. To evaluate the influence of each abiotic variable over the fish community, a Canonical Correspondence Analysis was conducted. We identified 7,286 individuals belonging to 20 families and 47 species, most specimens collected were juveniles. At low tide, the highest diversity and richness values were calculated while the highest dominance was obtained at high tide. As for the number of species collected at the three beaches, stood out for the lower values the cooler months, between June and September. Abiotic variables explained 41.3% of the variability of biological data, where 11.4% corresponds to the spatial variation. Meanwhile the temporal variables accounted for 31.9% of the variation in abundance, where 26.3% of the variance explained nycthemeral variation. Additionally two groups were clearly observed between months with low and high temperature. However in this variable, the tidal variation, excluding the seasonal effect, explained 6.2%, while seasonality, excluding tide effect, explained 26.3%. Although the main measurable seasonal changes were related to temperature, water temperature showed a low percentage of explanation in the fish fauna variability (2.7%). Finally, it is emphasized that the seasonal changes in surf zone fish community primarily reflect patterns of recruitment determined by the reproductive activity and coastal circulation.

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