Fabio Rossano Dario - Academia.edu (original) (raw)

Papers by Fabio Rossano Dario

World News of Natural Sciences, 2018

The objective of this study was accomplishes a knowledge survey of the Apiaká indigenous on the m... more The objective of this study was accomplishes a knowledge survey of the Apiaká indigenous on the mammals of natural occurrence in their territory, who is located in the Mato Grosso State, Southern Brazilian Amazon Rainforest. As method for collect the data were used open and semi-structured interviews. Twelve indigenous were interviewed, with both genres and different ages. The interviewees mentioned 36 different species of mammals and they showed wide ecological knowledge regarding these animals. The oral transmission of knowledge occurs across generations.

World News of Natural Sciences, 2017

The diversity of birds is directly correlated with the structure of the forest. Any interfering w... more The diversity of birds is directly correlated with the structure of the forest. Any interfering with the vegetation produces direct effects on the avifauna through the increase, decrease, or alternation of two key attributes: food and shelter. So, the composition of life in the forest is altered as changes occur in vegetation that directly interferes with the population structure of the avifauna, be those changes natural or anthropic. This study was realized in Amazon Rainforest fragments, and the main objective was to analyze the behavior of frugivorous and omnivorous birds in three different stages of ecological succession. In forest environments, where a vertical stratification of resources occurs, these species are distributed occupying a high diversity of trophic niches. The diversity and density of the frugivorous and omnivorous birds in the forest fragments in medium and advanced stage of ecological succession could be directly correlated not only with the structure of the forest but also to the fact that these birds feed almost exclusively on abundant and easy to find food source: shrub and tree fruit of certain vegetable species abundant in rainforest understory layer.

Scholars Journal of Agriculture and Veterinary Sciences, 2017

The diversity of birds is directly correlated with the structure of the forest. The fragmentation... more The diversity of birds is directly correlated with the structure of the forest. The fragmentation of forest, i.e., the disruption in the continuity of forest habitat cover can cause impacts on bird's abundance, species richness, and community dynamics. Any interference with the vegetation produces direct effects on the avifauna through the increase, decrease, or alternation of two key attributes: food and shelter. So, the composition of life in the forest is altered as changes occur in vegetation that directly interferes with the population structure of the avifauna, being those changes natural or anthropic. This study was realized in forest fragments of Atlantic Forest in a metropolitan area of São Paulo, Brazil, to analyze the groups of birds that were affected by the forest fragmentation in different stages of ecological succession and the results showed alterations in the diversity and density of bird's species, principally among specialist species.

Scientia Forestalis, 2000

The study was carried out in an area located at Serra do Mar, belonging to Mata Atlântica formati... more The study was carried out in an area located at Serra do Mar, belonging to Mata Atlântica formation, also known as Atlantic Rain Forest, near the town of Paraibuna, State of São Paulo, Brazil (located at latitude 23 o 31'S to 23 o 33'S, longitude 45 o 39'W to 45 o 42'W and altitude of 944 to 1.136m). Three fragments of natural vegetation (sizes of 46.92 ha, 4.28 ha and 26.38 ha) and an adjacent area of eucalypts plantation (42.15 ha), were utilized for the surveys. In all situations the understorey was quite prominent and the vegetation of the gallery forest fragments were in a medium stage of secondary regeneration. The fragment of smaller size was formed by a corridor of natural vegetation, connecting the two larger fragments. The objectives of the study were to analyze the groups of birds that were affected by the forest fragmentation and, additionally, to evaluate the impacts caused by the fragmentation and the isolation degree of these areas, using birds as ecological indicator to analyze the corridor's effectiveness to the passage of genetic material among fragments. The method used to register the avifauna specimens was the captures and recaptures supported by mist nets installed within the fragments understorey and within an eucalypts plantation. Taking into account 2.502 hours of mist net in all studied areas, it was possible to register a total of 54 species of birds, distributed over a range of 14 families and 6 orders. The main species were characterized as insect-eating and omnivorous. The species composition was affected by the fragmentation and also by the reduction of the natural vegetation. The quantity and diversity of birds showed a direct relationship with the size of the fragment and structure of the vegetation and an inverse relationship with the isolation degree of the area. There was no evidence of passage of any typical forest avifauna individuals by the corridor. The registration of great quantity of common species to both fragments and corridor, of several trophic groups and distribution in the different strata of the vegetation, demonstrates the dynamics among these environments. The corridor is working as an effective habitat area, complementing the network of existent reserve. The width is directly attached to the corridor effectiveness, however, the ideal width is an empiric measure, because several variables can affect the species flux to the corridor, as area, isolation degree, structure and vegetation composition, edge effect, neighborhood type and anthropic pressures. The eucalypts plantations, even containing the understorey level quite prominent, form an effective barrier to different avifauna species, mainly over those ones that live in the core zone of the forest.

Episteme, 2002

One of the Brazil’s most important forest formations is the Atlantic Rain Forest, located at the ... more One of the Brazil’s most important forest formations is the Atlantic Rain Forest, located at the long of the coast of the Atlantic Ocean from the parallel 5° 30’ S to 30° 00’ S. This forest originally covered 15% of Brazilian’s territory in an area of approximately 130 millions hectares. In almost 500 years of deforestation, since the beginning of the colonization by Portugal in 1530, this dense tropical forest was reduced to fragments of modified forest, currently remains only 7.6% of its original area. the brazilian’s economic cycles had been extremely injurious to the country in ecological means with a large-scale process of deforestation of atlantic rain forest. this cycle was: the exploration of the wood of a tree named Pau Brazil (Caesalpinia echinata Lam.), the sugar cane crop, the exploration of diamond and gold mines, the extensive cattle activities, the coffee crop and the industrial development. the accelerated process of fragmentation and also the reduction of the atlantic rain forest natural vegetation turned this region in one of the bigger priority areas for the conservation of the natural resources in the whole world, therefore this rich ecosystem is an important center of evolution, owning 1.807 species between mammals, birds, reptiles and amphibians, being 160 endemic species, and about 20.000 species of plants, being 8.000 endemic at this area.

Ciência Rural, 2002

The study was carried out in an area located at "Serra do Mar", belonging to "Mata Atlântica" for... more The study was carried out in an area located at "Serra do Mar", belonging to "Mata Atlântica" formation, also known as Atlantic Rain Forest, near the town of Paraibuna, State of São Paulo, Brazil (located at 23o 31’S to 23o 33’S, 45o 39’W to 45o 42’W and 944 to 1.136m altitude). Three fragments of natural vegetation (sizes of 47, 26 and 4 hectares) and an adjacent area of eucalypts plantation were utilized for the surveys. In all situations the understorey was quite prominent and the vegetation of the gallery forest fragments was in a medium stage of secondary regeneration. The method used to the register the avifauna specimens was the technique of observations per fixed points. The main objective of the study was to analyze the groups birds that were affected by the forest fragmentation and, additionally, to evaluate the impacts caused by the fragmentation and the isolation degree of these areas. Taking into account all studied areas, it was possible to register a total of 113 species of birds, distributed over a range of 27 families and 13 orders. The main species were caracterized as insect-eating, omnivorous and grain-eating, all of them occupying the understorey level. The species composition was affected by the fragmentation and also by the reduction of the natural vegetation. The quantity and diversity of birds showed a direct relationship with the size of the fragments, and structure of the vegetation and an inverse relationship with the isolation degree of the area.

Fresenius Environmental Bulletin, 2003

The sugar cane industrial process generates organic residues: filter cake, bagasse and decantatio... more The sugar cane industrial process generates organic residues: filter cake, bagasse and decantation mud, that can be used as organic composting. In this research their effects as an organic composting with or without biodynamic preparations were studied, both in the soil and in the sugar-cane crop yield. The results indicate that organic composting is an economical and viable alternative, which can result in a yield increase, and that the composting process with biodynamic preparations is more effective too. The chemical and biological parameters of the soil do not have significant differences between treatments.

Episteme, 2006

The vegetation is one of the most important characteristic of the environment for the maintenance... more The vegetation is one of the most important characteristic of the environment for the maintenance of the wild animals. The natural or anthropic changes in the vegetation interfere directly in the fauna populacional structure, altering the diversity and density of the animals and, affecting mainly the rare species with low populacional density. The ecological succession is an important, it is a natural process wich is characterized by the substitutions that happened in an ecosystem after a natural or anthropic disturbance until a stable stage. In general the diversity of the animals increases during the ecological succession and it reaches the maximum in the climax of the vegetation. The most important characteristics of the vegetation to a bigger diversity of birds in a certain habitat are the presence of the understorey and the height of the forest, that determines the number of vertical strata. The composition of wild animals' communities is the product of the evolutionary process. Each species is dependent of both, certain characteristics of the vegetation and the biological interactions that determine where the specie can exist.

Conscientiae Saúde, 2008

The study was carried out in two forest fragments located at East-Amazonian, in the town of Parag... more The study was carried out in two forest fragments located at East-Amazonian, in the town of Paragominas, State of Pará, Brazil (located at latitude 3o24’S to 3o38’S, longitude 47o12’W to 47o40’W), in October 2007 and March 2008. The main objective of the study was to analyze the groups of birds that were affected by the forest fragmentation and the isolation degree of these areas, using birds as ecological indicator. The method used to register the avifauna specimens were the technique of observations per fixed points and were calculated the Shannon-Weaver diversity index (H’=3,7795) and Equitability (E=0,7854) and for each species was calculated the Index of Point Abundance (IPA). Taking into account 48 hours of observations, it was possible to register a total of 123 species of birds, distributed over a range of 36 families, 15 orders and grouped in nine trophic guilds. Insectivores and omnivores were the more significantly abundant.

Biotemas, 2010

This study was carried out in forest fragments located in the Atlantic Rainforest, in the town of... more This study was carried out in forest fragments located in the Atlantic Rainforest, in the town of Anchieta, south of Espírito Santo State, Brazil (located at latitude 20 o 40'S to 20 o 48'S, longitude 40 o 34'W to 40 o 42'W), along the seasons of 2008. The main objective of the study was to analyze the groups of birds that were affected by the forest fragmentation and the degree of isolation of these areas. The method used to register the avifauna specimens was the technique of observation per fixed point. Thus, the Shannon-Weaver diversity index (H'=4.18) was calculated, showing a significant abundance in the studied areas, and Equitability (E=0.81), suggesting that the number of species registered at the site represented the maximum capacity the areas were able to shelter. The Index of Point Abundance (IPA) was also calculated for each species. The IPA varied from 0.0042 (one contact) to 0.9500 (228 contacts), with a large number of species with low IPA and a few species with intermediate or high IPA. Taking into account 80 hours of observations, it was possible to register a total of 168 species of birds, distributed over a range of 45 families, 20 orders, and grouped in eight trophic guilds. Omnivores and insectivores were the most abundant, with 58 and 52 species respectively. The species most affected by the forest fragmentation were the great frugivores and understorey insectivorous birds.

Biociências, 2009

The study was carried in environment characterized as Restinga Vegetation fragments, situated in ... more The study was carried in environment characterized as Restinga Vegetation fragments, situated in Southeastern Brazil, municipality of Anchieta, Espírito Santo State (located at latitude 20o47'S to 20o49'S, longitude 40o35'W to 40o37'’W), along the seasons of 2008. The main objective of the study was to know the avifauna composition existent in this natural environment. The method used to register the avifauna specimens were the technique of observations per fixed points and were calculated the Shannon-Weaver diversity index (H’=3,97) and Equitability (E=0,89) and for each species was calculated the Index of Point Abundance (IPA). Taking into account 50 hours of observations, it was possible to register a total of 87 species of birds, distributed over a range of 27 families, 12 orders and grouped in 7 trophic guilds. Omnivores and insectivores were the more significantly abundant.

Atualidades Ornitológicas, 2012

O estudo foi realizado em um fragmento florestal de Mata Atlântica, localizado no município de Ja... more O estudo foi realizado em um fragmento florestal de Mata Atlântica, localizado no município de Jandira, Região Metropolitana de São Paulo, Brasil (entre as coordenadas geográficas 23o33'10'' e 23o33'26'' Sul e 46o52'58'' e 46o53'25''Oeste), a 740 m de altitude, ao longo das quatro estações do ano, entre Maio/2008 e Fevereiro/2009. O objetivo foi conhecer a composição da avifauna neste ambiente antrópico e analisar os grupos de aves afetados pela fragmentação florestal em áreas urbanas. O método utilizado para o registro da avifauna foi o de observações por pontos fixos. Foram calculados o Índice de Diversidade de Shannon-Weaver e Índice de Equidade de Pielou para a área estudada, e o Índice Pontual de Abundância para as espécies registradas nos quatro períodos amostrais. Foram registradas, em 53 horas e 20 minutos de observações, 88 espécies de aves, distribuídas em 35 famílias, 17 ordens e agrupadas em sete guildas tróficas, sendo insetívoro e onívoro as guildas mais abundantes.

Tropical Ecology, 2011

The forests along Brazil's Atlantic coast have undergone extensive transformation from clearing f... more The forests along Brazil's Atlantic coast have undergone extensive transformation from clearing for agriculture and urban expansion. In this study we describe the avian community in a coastal restinga forest near the city of Ubatuba, northern coast of the state of São Paulo in southeastern Brazil. We used point counts to characterize the avifauna. During 36 hours of observation we recorded 114 species of birds distributed among 23 families. We calculated point abundance, frequency of occurrence and Kendeigh index for each species. Similarly, community metrics [diversity (H´= 3.91) and equitability (E = 0.82)] were obtained for the avifauna in our study site. Omnivores and insectivores were more abundant, with 45 and 35 species respectively. Our results show that despite being a secondary forest the study area was characterized by a diverse avian community.

Asian Journal of Biological and Life Sciences, 2014

Animal dispersers are the key in the configuration of plant communities and expanding existing po... more Animal dispersers are the key in the configuration of plant communities and expanding existing populations. Knowledge about how frugivory and seed deposition are spatially distributed is valuable to understand the role of dispersers on the structure and dynamics of plant populations. Seed dispersal by animals provides a fundamental service for the ecosystems, and mammals are one of the most important vertebrate groups responsible for seed dispersal in tropical regions.

Asian Journal of Biological and Life Sciences, 2013

Vegetation is one of the most important characteristics of the environment because it supports an... more Vegetation is one of the most important characteristics of the environment because it supports animal life. Any interfering with the vegetation produces direct effects on the fauna through the increase, decrease, or alternation of two key attributes: food and shelter. So, the composition of life in the forest is altered as changes occur in vegetation that directly interferes with the population structure of the fauna, be those changes natural or anthropic. This fact can be realized by the alterations in the diversity and density of animal species, principally among specialist species.