scholarly journals Diversidade e distribuição de ninfas de Plecoptera (Insecta) por substratos em rios do Parque Estadual da Pedra Branca, Rio de Janeiro, Brasil

2017 ◽  
Vol 10 (2) ◽  
pp. 76-81 ◽  
Author(s):  
Fernanda Avelino Capistrano ◽  
Gisele Luziane de Almeida ◽  
Leandro Silva Barbosa
Keyword(s):  
Monte Carlo ◽  
Rio De Janeiro ◽  
Diversity Index ◽  
Similarity Index ◽  
Shannon Index ◽  
Air Temperatures ◽  
Biological Similarity ◽  
Para Determinar ◽  
Abundance And Diversity ◽  
Janeiro State

Resumo. No presente estudo procuramos entender o principal substrato de ocorrência de ninfas de Plecoptera (Insecta) em rios do Parque Estadual da Pedra Branca (Rio de Janeiro, RJ, Brasil). As coletadas das ninfas foram realizadas entre agosto/2008 a março/2009, em cinco riachos localizados a 200 m de altitude. Foram investigados cinco tipos diferentes de substrato: areia, folhiço retido, folhiço de fundo, rocha com musgo e rocha solta lisa. Além da coleta de imaturos, a temperatura da água e do ar, o pH, a largura e a profundidade dos riachos, e a velocidade da água (método de flutuação) foram medidas. A Análise de Espécies Indicadoras e o Teste de Monte Carlo foram utilizados para determinar a preferência de habitats pelas morfoespécies. O índice de Shannon foi utilizado para verificar a maior diversidade entre os substratos e os rios. Uma análise de agrupamento foi realizada a fim de verificar a similaridade física e biológica dos rios. Um total de 559 ninfas foi coletado e distribuídos em seis morfoespécies. O substrato ‘folhiço retido’ mostrou-se como o de maior abundância e riqueza em todos os riachos estudados. A heterogeneidade de substratos foi apontada como principal fator de diversidade entre os pontos de coleta.Diversity and substrate distribution of Plecoptera nymphs (Insecta) in strems of Parque Estadual da Pedra Branca, Rio de Janeiro, BrazilAbstract. The present study contributes to the understanding the main substrate where Plecoptera nymphs have occur in streams of Parque Estadual da Pedra Branca (Rio de Janeiro municipality, Rio de Janeiro State, Brazil). The collects of the nymphs were realized between August 2008 to March 2009, in five streams located at 200 m. asl. Five different substrates were investigated: sand, litter deposited in pool areas, litter in riffle areas, stones with moss and free stones. In addition to the collection of nymphs, water and air temperatures, pH, width and depth of the streams, and water velocity (float method) were measurement. The Indicator Species Analyses and Monte Carlo Test were used to determine the habitat distributions of the insects. The Shannon Index was used to verify the diversity index of streams and substrates. The Cluster Analysis using the similarity index of Morisita, was used to verify the physical and biological similarity of the streams studied. A total of 559 nymphs were collected and distributed by six taxa. The litter was the substrate with high abundance and diversity. The heterogeneity of substrates maybe the factor to explain the diversity between the areas collected.

scholarly journals The The diversity and abundance of Hymenoptera insects on tidal swamp rice field in Indragiri Hilir District, Indonesia

2020 ◽  
Vol 21 (3) ◽  
Author(s):  
ZAHLUL IKHSAN ◽  
HIDRAYANI ◽  
YAHERWANDI ◽  
HASMIANDY HAMID
Keyword(s):  
Species Diversity ◽  
Rice Field ◽  
Diversity Index ◽  
Human Life ◽  
Similarity Index ◽  
Pitfall Trap ◽  
Vital Role ◽  
Tidal Swamp ◽  
Abundance And Diversity ◽  
Number Of Individuals

Abstract. Ikhsan Z, Hidrayani, Yaherwandi, Hamid H. 2020. The diversity and abundance of Hymenoptera insects on tidal swamp rice field in Indragiri Hilir District, Indonesia. Biodiversitas 21: 1020-1026. Hymenoptera is one of the four largest insect orders and it plays a vital role in human life as pollinators, parasitoids, and predators. Hymenoptera parasitoids are particularly important as agents of biological control of pest. The objective of this research was to study the diversity and abundance of Hymenoptera on tidal swamp rice field in Indragiri Hilir District, Riau Province, Indonesia. Samplings were conducted in 3 sub-districts of rice production centers, namely Batang Tuaka, Keritang and Reteh, using four trapping techniques (i.e. insect net, malaise trap, pitfall trap, and yellow pan trap). Shannon diversity index (H '), Krebs evenness index (E), and Jaccard similarity index (Is) were calculated. We found 4,701 individuals consisting of 39 families and 319 species of Hymenoptera at the three studied areas. Tidal swamp rice in Indragiri Hilir District had a high species diversity of Hymenoptera parasitoids and Hymenoptera predators, but a moderate species diversity of Hymenoptera pollinators. Species diversity and evenness of Hymenoptera parasitoids and predators were higher in Keritang than in Batang Tuaka and Reteh. The families of Formicidae, Braconidae, Ichneumonidae, and Scelionidae had the highest number of species, while Formicidae, Scelionidae, Diapriidae, and Braconidae had the highest number of individuals. Based on these findings, the abundance and diversity of Hymenoptera insects in Indragiri Hilir District have the potentials to be developed as biological agents to control pests on tidal swamp rice in this area.

scholarly journals Abundance and Diversity of Diatom Class Bacillariophyceae as Bioindictaor of Pollution in the Waters of Tanjung Luar Fish Landing Based

2021 ◽  
Vol 20 (3) ◽  
pp. 525
Author(s):  
Niswatul Audah ◽  
Lalu Japa ◽  
M. Yamin
Keyword(s):  
Random Sampling ◽  
Sampling Method ◽  
Diversity Index ◽  
Similarity Index ◽  
Pollution Level ◽  
Dominance Index ◽  
Systematic Random Sampling ◽  
Species Similarity ◽  
Sample Points ◽  
Abundance And Diversity

Tanjung Luar is coastal water used as a waste disposal area for Fish Landing Based (FLB) activities. However, the condition of the waters with phytoplankton as a bioindicator has never been reporting. This research aims to know Bacillariophyceae in terms of abundance, diversity, and measurement of environmental pollution variables. Methods Sampling at the study location was determined by a systematic random sampling method. Data analysis Bacillariophyceae were determined using formula abundance, diversity index, and dominance index. The index of similarity of species between sample points was determined based on the Bray-Curtis Cluster Analysis. Furthermore, the results showed an abundance of Bacillaryophyceae of 322,000 individuals / L classified as low, the diversity index of Bacillariophyceae of 2.162 classified as moderate, and a dominance index of 0.138 (without dominating species). The results showed that the highest species similarity index was between sample points II and III (57.9%), and the lowest species similarity index between sample points I and II was 23.7%. Water pollution on the waters of PPI Tanjung Luar is classified as moderate pollution level and oligotrophic fertility.

scholarly journals FITOSSOCIOLOGIA DO COMPONENTE ARBÓREO NUM REMANESCENTE DE FLORESTA OMBRÓFILA DENSA SUBMONTANA LIMÍTROFE À RESERVA BIOLÓGICA DO TINGUÁ, RIO DE JANEIRO

FLORESTA ◽  
2010 ◽  
Vol 40 (1) ◽  
Author(s):  
Felipe De Araújo Pinto Sobrinho ◽  
Alexandre Gabriel Christo ◽  
Rejan Rodrigues Guedes-Bruni
Keyword(s):  
Rio De Janeiro ◽  
Diversity Index ◽  
Structural Characteristics ◽  
Total Density ◽  
Important Species ◽  
Accumulation Curve ◽  
Secondary Stage ◽  
Structural Aspects ◽  
Janeiro State ◽  
Biological Reserve

O objetivo deste trabalho foi descrever os aspectos florísticos e estruturais do componente arbóreo em um fragmento alterado de Floresta Ombrófila Densa Submontana pertencente à Reserva Particular do Patrimônio Natural (RPPN) Centro de Ecologia e Cidadania do Tinguá (CEC Tinguá), no entorno da Reserva Biológica do Tinguá (RJ). Empregou-se para amostragem o método de parcelas, sendo incluídos todos os indivíduos com 5 cm ou mais de diâmetro a 1,3 m de altura do fuste (DAP). Foram amostrados 277 indivíduos, distribuídos em 21 famílias e 53 espécies, resultando em uma densidade total de 1.385 ind.ha-1. As famílias com maior riqueza de espécies foram: Fabaceae, Lauraceae, Myrtaceae, Apocynaceae e Melastomataceae. A curva do coletor indicou saturação na amostragem. As espécies mais importantes foram: Pseudopiptadenia contorta, Lacistema pubecens, Apuleia leiocarpa e Aiouea saligna. O baixo índice de diversidade de Shannon, juntamente com as características estruturais e os grupos funcionais predominantes indicam que o remanescente encontra-se em estádio secundário de sucessão. Palavras-chave: Floresta Ombrófila Densa Submontana; florística e estrutura; categorias sucessionais.   Abstract Phytosociologic of a arboreus component of the remanent of Tropical Submontane Rainforest on the bordering of Tingua Biological Reserve, Rio de Janeiro. The objective of this work was to describe the floristic and structural aspects of the arboreal component in an altered Tropical Submontane Rainforest at Center of Ecology and Citizenship of the Tinguá (CEC Tinguá) Private Natural Heritage Reserves next to the Biological Reserve of Tinguá, Rio de Janeiro State. Using the plot method we included all individuals with diameter at 1,3 m (D.B.H.) ≥ 5cm. A total of 277 individuals were sampled, distributed in 21 families and 53 species, resulting in a total density of 1.385 ind.ha-1. The species accumulation curve indicated saturation in the sampling. Fabaceae, Lauraceae, Myrtaceae Apocynaceae e Melastomataceae showed the highest values of species richness. The most important species were Pseudopiptadenia contorta, Lacistema pubecens, Apuleia leiocarpa and Aiouea saligna. The Low Shannon diversity index (H') together with the structural characteristics and the dominating functional groups of species indicating that the remainder finds itself in a secondary stage of succession.Keywords: Dense Ombrophilous Submontane Forest; Floristic and structure; successional categories. 

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.

scholarly journals THE STRUCTURE OF SUBTIDAL MACROALGAL ASSEMBLAGES AT THE TAMOIOS ECOLOGICAL STATION, A THREATENED CONSERVATION UNIT IN RIO DE JANEIRO, BRAZIL

2015 ◽  
Vol 63 (1) ◽  
pp. 71-82 ◽  
Author(s):  
Victor de Souza Koutsoukos ◽  
Roberto Campos Villaça ◽  
Maria Teresa Menezes de Széchy
Keyword(s):  
Rio De Janeiro ◽  
Diversity Index ◽  
Spatial Scales ◽  
Percent Cover ◽  
Bottom Communities ◽  
Rocky Bottom ◽  
Sargassum Vulgare ◽  
Shallow Subtidal ◽  
Rocky Bottoms ◽  
Janeiro State

The structure of subtidal rocky bottom communities at Tamoios Ecological Station (TES), situated in Ilha Grande Bay, Rio de Janeiro State, as well as in other Brazilian marine protected areas, is insufficiently characterized. The present study describes the macroalgal assemblages of shallow subtidal rocky bottoms on two islands of the TES-Imboassica (IM) and Búzios Pequena (BP)adopting species and genera as observational units. Two sites were surveyed on each island in summer 2011. Random 30x30 cm quadrats (n=3) were scraped to collect all macroalgae except crustose species. The subtidal assemblages, in which 58 macroalgal species occurred, were characterized by the high frequency and percent cover of Sargassum vulgare C. Agardh (56.8±8.4%). The sites differed significantly in total number of species and Shannon-Weiner diversity index (PERMANOVA, p<0.05). According to SIMPER, the macroalgal genera that most contributed to the dissimilarities of cover between the sites (contribution >5%) were Sargassum, Laurencia, Wrangelia, Canistrocarpus, Asparagopsis, Hypnea, Ceratodictyon, Gayliella, Spyridia and Chondria.Dissimilarities within and between the islands, as shown by nMDS of the cover data, suggest that different spatial scales should be considered in monitoring the rocky bottom communities of Ilha Grande Bay.

Leguminosae tree species diversity in coastal forests of Rio de Janeiro, Brazil

2021 ◽  
Vol 21 (3) ◽  
Author(s):  
Davi Nepomuceno da Silva Machado ◽  
Marcelo Trindade Nascimento ◽  
Ana Angélica Monteiro de Barros ◽  
Richieri Antônio Sartori ◽  
Claudio Belmonte de Athayde Bohrer ◽  
...  
Keyword(s):  
Species Composition ◽  
Tree Species ◽  
Environmental Variables ◽  
Rio De Janeiro ◽  
Similarity Index ◽  
Species Group ◽  
Coastal Forests ◽  
Southeast Region ◽  
Exclusive Group ◽  
Janeiro State

Abstract: This study investigated the current Leguminosae tree species composition in coastal forests over lithosoil soil or sandy plains in the eastern and central portion of Rio de Janeiro state, Brazil. A comparative study between the Atlantic Forest areas of the Southeast Region of Brazil was conducted to evaluate the influence of environmental variables on floristic differentiation. A total of 34 areas of the Southeast Region was selected from the NeoTropTree platform and the Leguminosae species in these areas were the basis for a similarity analysis. The Jaccard Similarity Index and the UPGMA method were applied for grouping analysis. The relationships between the Leguminosae species composition and the environmental variables were investigated via Cannonical Correspondance Analysis (CCA). The cluster analysis showed that the Leguminosae tree species group of this portion of Rio de Janeiro coastline share floristic affinity with seasonal forests, a result confirmed by CCA. This floristic differentiation is sustained by an exclusive group of Leguminosae species established over lithosoils or sandy plains, and signals that the extent of dry forests in Rio de Janeiro state might be larger than currently stated. The results justify distinct conservation actions in view of the floristic singularities of these areas.

scholarly journals Oviposition behavior of wild yellow fever vector mosquitoes (Diptera: Culicidae) in an Atlantic Forest fragment, Rio de Janeiro state, Brazil

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Shayenne Olsson Freitas Silva ◽  
Cecilia Ferreira de Mello ◽  
Ronaldo Figueiró ◽  
Tatiana Docile ◽  
Michele Serdeiro ◽  
...  
Keyword(s):  
Atlantic Forest ◽  
Yellow Fever ◽  
Rio De Janeiro ◽  
Yellow Fever Virus ◽  
Diversity Index ◽  
Oviposition Behavior ◽  
Abiotic Factors ◽  
Ground Level ◽  
Mosquito Vectors ◽  
Janeiro State

AbstractAlthough there are many studies on the control of mosquito vectors of the yellow fever virus (YFV) in tropical forests, there are still few ecological studies regarding abiotic factors effect on these mosquitoes. Here we characterize these effects on oviposition behavior, abundance, and diversity of mosquito vectors of YFV. The study was conducted in Córrego da Luz Municipal Park, in Casimiro de Abreu, Rio de Janeiro state, Brazil, from July 2018 to December 2019. Ovitraps were placed at ground level and 3 m high. The data were tested for normality using the Shapiro–Wilk test, followed by an independent sample analysis, the Mann–Whitney test. The Shannon Diversity Index was used to evaluate the abundance of mosquitos' eggs collected at both ground level and 3 m high. We highlight the presence of Haemagogus janthinomys and Hg. leucocelaenus, primary YFV vectors in forest areas. The abundance of Hg. leucocelaenus (63%), Hg. janthinomys (75%), and Aedes terrens (58%) was higher at the height of 3 m, while Ae. albopictus (52%) was higher at ground level. Aedes albopictus was positively correlated with temperature. Culicidae monitoring is essential for assessing the YFV transmission cycle in Atlantic forest fragments.

Carabidae of Barnaul city parks: ecological characteristics and species composition

2018 ◽  
Vol 8 (2) ◽  
pp. 348-353
Author(s):  
E. A. Kuchina ◽  
N. D. Ovcharenko ◽  
L. D. Vasileva
Keyword(s):  
Species Composition ◽  
Diversity Index ◽  
Similarity Index ◽  
Life Forms ◽  
Ground Beetles ◽  
Forest Steppe ◽  
Ecological Groups ◽  
Dominant Group ◽  
Species Diversity Index ◽  
Steppe Species

<p>Anthropogenic impact on the population of ground beetles leads to a change in their numbers, structure of dominance, density, species composition, spectrum of life forms. This makes the beetles Carabidae a convenient and informative bioindicator of the ecological state of biocenoses. The material for this work was the Carabidae collections conducted in June-August 2016-2017 in the park zone of different regions of Barnaul, differing in location, area, hydrological regime, vegetation cover, purpose and anthropogenic load. When processing the material, the quantitative, species and generic composition of the carabidae was determined, calculations were made for such indicators as the Berger-Parker dominance index, the Shannon species diversity index (Hs), and the Jacquard species similarity index. The fauna (Coleoptera, Carabidae) of the park zone of Barnaul is represented by 55 species belonging to 20 genera. The dominant group is represented by species belonging to steppe, forest and polyzonal groups. Forest-steppe species of ground beetles as dominants have not been identified in any of the investigated territories. The greatest variety of ecological groups was noted on the territory of the Yubileyny рark, which is explained by the presence of zones with various microclimatic conditions, the presence of a birch grove that flows through the park with the Pivovarka River, and a wide log in the park. Registered species belong to eight groups of life forms belonging to two classes - zoophagous and myxophytophagous. On the numerical and species abundance, zoophages predominate. The spectrum of life forms corresponds to the zonal spectrum characteristic of the forest-steppe zone.</p><p> </p>

Assemblage Patterns of Hymenoptera at Different Elevations of Gunung Datuk, Rembau

2017 ◽  
Vol 14 (2) ◽  
pp. 1 ◽  
Author(s):  
Noor Nasuha Abd Aziz ◽  
Siti Khairiyah Mohd Hatta ◽  
Idris Abd Ghani ◽  
Saiyid Jalaluddin Saiyid Shaifuddin
Keyword(s):  
Species Richness ◽  
Diversity Index ◽  
High Elevation ◽  
Significant Difference ◽  
Index Site ◽  
Evenness Index ◽  
Abundance And Diversity ◽  
Richness Index ◽  
Paired T Test ◽  
Malaise Traps

A study on abundance and diversity of Hymenoptera was conducted in Gunung Datuk, Rembau. Samplings were conducted from November 2014 to February 2015 using six Malaise traps. Three traps were placed at Site 1 at 700m height for high elevation and the remaining traps were placed at Site 2 at 200m height for low elevation. A total number of 221 Hymenopteran were collected which consist of nine families namely Ichneumonidae, Formicidae, Braconidae, Bethylidae, Evaniidae, Tiphiidae, Vespidae, Pompilidae and Apidae. In this study, 93 individuals were obtained from Site 1, comprising nine families and 43 morphospecies while 127 individuals were obtained from Site 2 with nine families and 45 morphospecies. Formicidae was the most dominant family collected from both sites with a total of 104 individuals while the least family recorded was Apidae with only one individual. Shannon’s Weiner Diversity Index (H’) showed Site 1 had the higher diversity value with H’ = 3.17 compared to Site 2 with value H’ = 3.12. For Evenness Index, Site 1 had higher value compared to Site 2 with E’ = 0.84 and E’ = 0.82 respectively. Moreover, for Margalef Richness Index, Site 1 recorded R’ = 9.24 while site two recorded R’ = 9.08 which concluded that Site 1 had higher species richness compared to Site 2. Paired t-test showed that both sites had no significant difference with p>0.05. Overall study showed that the diversity and abundance of Hymenoptera in Gunung Datuk were low since the value of H’ is less than 3.50.

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