scholarly journals Ichthyofauna from the Parque Nacional da Serra dos Órgãos and its surrounding areas, Rio de Janeiro state, Brazil

Check List ◽  
2015 ◽  
Vol 11 (4) ◽  
pp. 1696
Author(s):  
Geysa Da Silva Camilo ◽  
Bianca De F. Terra ◽  
Francisco Gerson De Araújo
Keyword(s):  
Species Richness ◽  
Rio De Janeiro ◽  
Fish Assemblages ◽  
Buffer Zone ◽  
Management Plan ◽  
Adjacent Area ◽  
Conservation Unit ◽  
Composition And Structure ◽  
Surrounding Areas ◽  
Janeiro State

This study provides a list of freshwater fishes of the Parque Nacional da Serra dos Órgãos (PARNASO; Rio de Janeiro state, Brazil) and its surrounding areas. Fish samplings were performed by electrofishing during the dry season (2010 –2011) in three different areas: 1, inside of the PARNASO (2 sites); 2, in the buffer zone (4 sites); and 3, in adjacent areas (8 sites). A total of 47 fish species in 13 families and six orders were recorded. Fish composition within the limits of the PARNASO differed from that recorded in the adjacent area, with the latter having comparatively higher species richness. The buffer area had intermediate ichthyofauna composition between the two other areas. This study enhanced knowledge on the composition and structure of the fish assemblages in PARNASO, by recording the occurrence of six new species within the park that were not included in the Management Plan of this Conservation Unit.

scholarly journals Avaliação das potencialidades e limitações da trilha da Pedra Selada e dos percursos para a Pedra Boca do Sapo no Parque Estadual da Pedra Selada (RJ)

2015 ◽  
Vol 8 (5) ◽  
Author(s):  
Vítor Correa Ferreira
Keyword(s):  
Forest Management ◽  
Early Diagnosis ◽  
Local Population ◽  
Buffer Zone ◽  
Management Plan ◽  
The State ◽  
Conservation Unit ◽  
Forest Management Plan ◽  
Negative Impacts ◽  
Management And Conservation

OO Parque Estadual da Pedra Selada, localizado no sul fluminense, possui atrativos turísticos muito interessantes, sendo o pico da Pedra Selada e os percursos para a Pedra Boca do Sapo, os mais conhecidos. Os objetivos do trabalho foram caracterizar e mapear as trilhas para localizar os pontos de limitações e os pontos de fragilidade ecoturística para auxiliar a gestão da Unidade de Conservação no planejamento, no manejo e na conservação da área. Para isso, foram mapeados com auxílio do GPS, os atrativos, os pontos de cicatrizes de erosão e na identificação das áreas sem manejo. O geoprocessamento foi utilizado em conjunto com a metodologia do Índice de Atratividade de Pontos Interpretativos; o que permitiu localizar os pontos de fragilidade ecoturística. Esse estudo foi importante porque poderá contribuir com a Unidade de Conservação na implantação do Plano de Manejo e, auxiliar a gestão do Parque Estadual da Pedra Selada na preservação dos atrativos, podendo melhorar a visita dos turistas, a renda da população local e, principalmente, minimizar os impactos negativos na biota. Como principais resultados e conclusões, o presente trabalho contribuiu para auxiliar a gestão do Parque Estadual da Pedra Selada na identificação das áreas de baixa, média e alta fragilidade ecoturística; no diagnóstico antecipado das áreas que possam sofrer impactos causados pela visitação e contribuir também na implantação da zona de amortecimento da Unidade de Conservação na região da Pedra Boca do Sapo. te Park; Fragility Ecotourism; GIS. Evaluation of the potential and limitations of the Sealed Stone trail and paths for the Pedra Boca do Sapo (Mouth Frog Stone) in the ‘Pedra Selada’ (Sealed Stone) State Park (RJ, Brazil) ABSTRACT The state Park off Pedra Selada, located on the south of Rio de Janeiro’s state, has very interesting touristic attractions, one of them being the Pedra Selada and the paths to the Boca do Sapo Rock, those are the most famous ones. The focus of this study were characterize and map the trails to locate both the limitation and the vulnerability of those eco touristic spots it was done to assist management of the Conservation Unit on planning, forest management and conservation of the area. In order to do those attractions were mapped with the help off a GPS the spots of erosion scars and on the identification of areas without forest management. The geoprocessing was used in conjunction with the attractiveness Index methodology points Interpretive; what me possible to locate the vulnerable eco touristic. This study was important because it can contributes with the Conservation Unit at the implementation off the Forest management Plan and assist on the managing of the state Park off Pedra Selada preserving attractions making both the tourist visit and the income of the local population better and manly , minimize negative impacts on environment. As main result and conclusions, the study contributed to help management of the State Park off Pedra Selada identifying areas with low, medium and high vulnerability ecotourism; the early diagnosis of the areas that may suffer impacts due to visitation and also contribute to the establishment of the buffer zone of the Conservation Unit in the region of Boca do Sapo Rock. KEYWORDS: ‘Pedra Selada’ State Park; Fragility Ecotourism; GIS.

scholarly journals The influence of offshore windpower on demersal fish

2006 ◽  
Vol 63 (5) ◽  
pp. 775-784 ◽  
Author(s):  
Dan Wilhelmsson ◽  
Torleif Malm ◽  
Marcus C. Öhman
Keyword(s):  
Species Richness ◽  
Power Plants ◽  
Fish Assemblages ◽  
Demersal Fish ◽  
Fish Abundance ◽  
Artificial Reefs ◽  
Fish Community Structure ◽  
Blue Mussels ◽  
Fish Aggregation ◽  
Surrounding Areas

Abstract A significant expansion of offshore windpower is expected in northwestern Europe in the near future. Little is known about the impacts it may have on the marine environment. Here, we investigate the potential for wind turbines to function as artificial reefs and fish aggregation devices (FADs), i.e. whether they would locally increase fish densities or alter fish assemblages. Fish communities and habitat composition were investigated using visual transects at two windpower farms off the southeastern coast of Sweden, central Baltic Sea. Fish abundance was greater in the vicinity of the turbines than in surrounding areas, while species richness and Shannon–Wiener diversity (H′) were similar. On the monopiles of the turbines, fish community structure was different, and total fish abundance was greater, while species richness and diversity (H′) were lower than on the surrounding seabed. Blue mussels and barnacles covered most of the submerged parts of the turbines. On the seabed, more blue mussels and a lesser cover of red algae were recorded around the power plants than elsewhere. Results from this study suggest that offshore windfarms may function as combined artificial reefs and fish aggregation devices for small demersal fish.

Diversity of Mosquitoes (Diptera: Culicidae) in the Bom Retiro Private Natural Heritage Reserve, Rio de Janeiro State, Brazil

2022 ◽  
Author(s):  
Amanda Queiroz Bastos ◽  
Cecilia Ferreira de Mello ◽  
Júlia dos Santos Silva ◽  
Hélcio Reinaldo Gil-Santana ◽  
Shayenne Olsson Freitas Silva ◽  
...  
Keyword(s):  
Species Richness ◽  
Rio De Janeiro ◽  
Diversity Index ◽  
Abundant Species ◽  
Immature Stages ◽  
Larval Habitats ◽  
Natural Heritage ◽  
Wiener Diversity Index ◽  
Water Tanks ◽  
Janeiro State

Abstract This study registers the diversity of Culicidae in the Bom Retiro Private Natural Heritage Reserve (RPPNBR), Rio de Janeiro state, Brazil, based on the collection of the immature stages in natural and artificial larval habitats. Larvae and pupae were collected monthly at two sites of the RPPNBR from May 2014 to July 2015 using dippers and aquatic pipettes. The diversity of the mosquito community was described using the Shannon–Wiener Diversity Index (H′), as well as diversity, richness, and dominance of species found in different larval habitats (lake, bamboos, bromeliads, and artificial vessels). The Mann–Whitney test was used to calculate differences between the two natural and artificial habitats. Overall, 15,659 specimens belonging to 25 species, ten genera, and two subfamilies were collected. The most abundant species collected at sites that were reforested recently were Culex pleuristriatus Theobald, 1903, Limatus durhamii (Theobald, 1901), Aedes albopictus (Skuse, 1895), Culex neglectus (Lutz, 1904), and Culex retrosus (Lane & Whitman, 1951). In a forest preserved site, the most abundant species were Cx. neglectus, Culex iridescens (Lutz, 1905), Sabethes identicus (Dyar & Knab, 1907), Wyeomyia arthrostigma (Lutz, 1905), and Li. durhamii. With respect to larval habitats, 0.1% of the specimens were collected along the edge of a lake, 5.5% in bamboos, 35.9% in bromeliads, and 58.4% in artificial containers. Only 5.5% of the specimens were collected in the forest preserved site, with the remaining samples from the site with altered vegetation. A greater species richness and diversity were found in forest-altered sites compared to the forest preserved site. Several species were collected in the water accumulated in the nylon lids of plastic water tanks. Such vessels can promote an increase in mosquito population density in the environment surrounding the study area.

The effect of an artificial reef system on the transient fish assemblages – south-eastern coast of Brazil

2014 ◽  
Vol 95 (3) ◽  
pp. 635-646 ◽  
Author(s):  
Diogo Fonseca Da Rocha ◽  
Marcos Alberto Lima Franco ◽  
Pedro Vianna Gatts ◽  
Ilana Rosental Zalmon
Keyword(s):  
Rio De Janeiro ◽  
Fish Assemblages ◽  
Artificial Reef ◽  
Fish Population ◽  
Artificial Reefs ◽  
Functional Structure ◽  
Eastern Coast ◽  
Northern Coast ◽  
Protective Environment ◽  
Janeiro State

Artificial reefs (ARs) are often used to improve fishing and, consequently, the economy of a region. However, the way in which the species use the reefs may vary between fish assemblages. An assessment was made of the influence of an AR complex on the transient fish population off the northern coast of Rio de Janeiro state and, therefore, two control areas were sampled. Gillnets were used to capture individual fish in six sampling surveys. Cumulative abundance and biomass curves (ABC) were used to assess the possible effects of the reefs on the community's functional structure. In the dry season, during which the influence of the Paraíba do Sul River is smaller, a larger richness of r-strategy species and juveniles of K-strategy species was observed in the reef area compared with the control areas, suggesting that the AR acts as a protective environment for these species. During the lower river discharge period the results indicated a potential disturbance in the functional structure of the AR fish community and, therefore, a less stable environment relative to the control areas. This ‘instability’ warrants a positive connotation, as it indicates that the artificial reefs are harbouring species that are particularly sensitive to predation, making the reef a powerful tool for maintaining these populations on the northern coast of Rio de Janeiro.

Community structure of temperate reef fishes in kelp-dominated subtidal habitats of northern Chile

2007 ◽  
Vol 58 (12) ◽  
pp. 1069 ◽  
Author(s):  
Alejandro Pérez-Matus ◽  
Lara A. Ferry-Graham ◽  
Alfredo Cea ◽  
Julio A. Vásquez
Keyword(s):  
Species Richness ◽  
Fish Species ◽  
Fish Assemblages ◽  
Sea Water ◽  
Reef Fishes ◽  
Northern Coast ◽  
Northern Chile ◽  
Temperate Reef ◽  
Composition And Structure ◽  
Study Sites

An important aim of fish ecology is to understand and predict patterns of distribution and abundance in marine communities. Such patterns were examined at four kelp-dominated sites along the northern coast of Chile (19° through 30° S) over 1 year. Fish species richness, diversity and abundance estimates obtained via observational and destructive sampling methods were compared among sites as were habitat and environmental variables that characterised the sites; including sea water temperature below the surface, nutrients, productivity, visibility, density of macroalgae stands, and percentage cover of observed microhabitats (including understorey algae and faunal assemblages). In total, 19 fish species belonging to 14 families were observed from all sites. Species richness and diversity were highest in sites where kelp canopy was composed of two species and where kelp was densest, although only species diversity was significantly different among sites. The sites with high kelp density, in turn, sustained abundant habitat-forming species in the kelp understorey. Principal coordinate analysis indicated that the composition and structure of the fish assemblages varied significantly with depth at all study sites. The depth distribution of fishes was correlated with the arrangement of site-specific biological microhabitats, defined by the algae or invertebrate species that form the microhabitat. Temperature, productivity, and nutrients did not vary consistently across study sites, but did vary within individual sites. We suggest that kelp cover and composition strongly affects the diversity and distribution of fishes at shallow coastal habitats in northern Chile through the availability of microhabitats.

scholarly journals Amphibians and reptiles from the Parque Nacional da Tijuca, Brazil, one of the world’s largest urban forests

2021 ◽  
Vol 21 (2) ◽  
Author(s):  
Thiago Arnt Dorigo ◽  
Carla Costa Siqueira ◽  
Jane C. F. Oliveira ◽  
Luciana Ardenghi Fusinatto ◽  
Manuela Santos-Pereira ◽  
...  
Keyword(s):  
Species Richness ◽  
Atlantic Forest ◽  
Rio De Janeiro ◽  
Species Abundance ◽  
Urban Forests ◽  
Secondary Data ◽  
Sampling Effort ◽  
Amphibian Species ◽  
Reptile Species ◽  
Janeiro State

Abstract: The Parque Nacional da Tijuca in Rio de Janeiro, Brazil, is considered to be one of the world’s largest urban forests, however no systematic inventory of its herpetofauna is available. In the present study, we surveyed the amphibians and reptiles of this park to assess its species composition (including secondary data) and obtain estimates of species richness and abundance. We conducted active searches (460 hours) between January 2013 and December 2015. We identified the taxa endemic to either the Atlantic Forest or Rio de Janeiro state, and verified the conservation status of each species in the international, Brazilian, and state red lists. We also estimated the species richness and sampling sufficiency by rarefaction curves and Bootstrap richness estimator, and analyzed the distribution of the species abundance in Whittaker plots. We recorded 3,288 individuals over 36 months, representing 24 species of amphibians and 25 reptiles. The cumulative species curves, rarefaction, and the richness estimated indicated that sampling effort was adequate. Species abundance adjusted to the log-series model in both amphibians and reptiles. The four most abundant amphibians represented 70% of the individuals recorded in this group, while the two most abundant reptiles represented 60% of the total individuals. The inclusion of the secondary data raised the number of amphibian species to 38, and the number of reptiles to 36. Approximately 80% of the amphibian species and 28% of the reptile species recorded are endemic to the Atlantic Forest, and six of the amphibian species are endemic to Rio de Janeiro state. Six amphibian species and one reptile species are classified under some threat of extinction, and two reptile species were exotic. The considerable diversity of the herpetofauna of the Parque Nacional da Tijuca, which includes endemic and threatened species, reflects the effectiveness of the reforestation of this protected area and emphasizes the importance of its conservation.

scholarly journals 103 butterflies (Papilionoidea) from Ilha Grande and Ilha da Marambaia, Rio de Janeiro, Brazil

2021 ◽  
Vol 52 (4) ◽  
pp. 63-70
Author(s):  
Carlos Eduardo Guimarães Pinheiro ◽  
Millena Castro Ribeiro ◽  
Roberto de Xerez
Keyword(s):  
Species Richness ◽  
Community Ecology ◽  
Rio De Janeiro ◽  
Collecting Methods ◽  
Janeiro State

Here we show a list of 103 butterflies (Papilionoidea) found at Ilha Grande and Ilha da Marambaia, Rio de Janeiro State, Brazil. To our knowledge, this is the first butterfly inventory conducted in these islands. The species richness, the collecting methods utilized, endemism, and the mimicry rings found in the islands are discussed. Moreover, we emphasize the importance and the utilization of butterflies as suitable models to assess community ecology patterns.

scholarly journals Distribution of fish assemblages in Lajes Reservoir, Rio de Janeiro, Brazil

2001 ◽  
Vol 61 (4) ◽  
pp. 563-576 ◽  
Author(s):  
F. G. ARAÚJO ◽  
L. N. SANTOS
Keyword(s):  
Rio De Janeiro ◽  
Fish Assemblages ◽  
Spatial Separation ◽  
Abundant Species ◽  
Clear Sign ◽  
Astyanax Fasciatus ◽  
Tilapia Rendalli ◽  
High Dominance ◽  
Distribution Of Fish ◽  
Janeiro State

Spatial distribution of fish assemblages in Lajes Reservoir, a 30 km² impoundment in Rio de Janeiro State (Lat. 22º42'-22º50'S; Long. 43º53'-44º05'W) was assessed to detect patterns of available habitat use by the fish. A standardized monthly sampling program was carried out from January to December 1994 at three zones of the reservoir (upper, near tributary mouths; middle; and lower, near the dam). Fishes were caught by gillnets, (50 m long, 3 m height), with mesh ranging having from 25 to 45 mm between knots, submerged during 12 hours. A total of 5,089 fishes were collected comprising 15 species, 14 genera and 9 families. Loricariichthys spixii, Astyanax bimaculatus, Parauchenipterus striatulus, Astyanax fasciatus parahybae, Oligosarchus hepsetus, Rhamdia parahybae, Hypostomus affinis, and Geophagus brasiliensis were the most abundant species, each contributing above 1% of the total number. Loricariichthys spixii was the dominant species, contributing over 80% of total number and biomass. Fish abundance, number of species, and biomass were higher in the upper zone, but differences from this overall pattern were shown by some species. Loricariichthys spixii and Rhamdia parahybae were more abundant in the upper zone, while all other species showed no differences in their abundance among the zones. Seasonal environmental variables of temperature, pH, transparency, and water level did not show a clear association with fish occurrence. Most fish used the different zones of the reservoir with no clear sign of spatial separation. High dominance of L. spixii, reduced abundance of reolific species Leporinus copelandii and Cyphocharax gilberti, and presence of introduced species such as Cichla monoculus and Tilapia rendalli are indications of antropic effects in the fish community.

scholarly journals ANURANS FROM BARRA DE LA LAGUNA DE ROCHA (ROCHA, URUGUAY)

2019 ◽  
Vol 2 (2) ◽  
pp. 23
Author(s):  
Gisela Pereira ◽  
Ernesto Elgue ◽  
Raúl Maneyro
Keyword(s):  
Species Richness ◽  
Species Composition ◽  
Protected Area ◽  
New Records ◽  
Management Plan ◽  
Field Trips ◽  
Historical Records ◽  
Conservation Unit ◽  
Amphibian Species ◽  
Future Studies

We present a list of amphibian species from the protected area Barra de la Laguna de Rocha (BLR), Uruguay. Fifteen monthly three-day field trips were performed between September 2011 and March 2013. During each field trip, active searches of individuals and auditive samplings were performed at seven selected sites. We recorded 19 species of amphibians belonging to five families: Bufonidae (4 especies), Hylidae (5), Leptodactylidae (7), Microhylidae (1) y Odontophrynidae (2). Comparing these data with historical records (obtained from cientific collections and literature), eight species represented new records for the study site. The species richness in the area represents 39.6% of the total richness recorded for Uruguay. We highlight the presence of Melanophryniscus montevidensis (Philippi 1902), a locally and globally threatened species. Information on BLR's amphibian species composition could help in the implementation of the management plan for this conservation unit, as well as to stimulate future studies in the area.

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