scholarly journals Species diversity and community structure of butterfly in urban forest fragments at Lucknow, India

2018 ◽  
Vol 10 (4) ◽  
pp. 1276-1280
Author(s):  
Ashok Kumar ◽  
Satyapal Singh Rana
Keyword(s):  
Climate Change ◽  
Community Structure ◽  
Species Diversity ◽  
Urban Forest ◽  
College Campus ◽  
Forest Fragments ◽  
Weather Patterns ◽  
Northern India ◽  
Equable Climate ◽  
The City

The survey was carried out between September 2015-August 2016 in five different localities  in Lucknow like Bijli Pasi Quila, Smriti Upvan, Vanasthali Park, Butchery Ground and BSNVPG College Campus, Lucknow, 26.84’N latitude and 80.92’E longitude, is located at an elevation of 126 meters above sea level and in the plain of northern India. Its location is responsible for the diverse weather patterns and climate change. The region has tropical dry equable climate having three main seasons; cold, hot and rainy season. Temperature of the city ranges from 23.8- 45.8°C in summer and 4.6-29.7°C in winter. During the study, butterflies were collected mainly with the help of circular aerial net, which were then placed in killing jar. Killed butterflies were stored in the insect box by proper pinning them for identification. During the course of study, 30 species of butterflies, belonging to 26 genera, representing 5 families, were recorded in Lucknow. 11 Species from nymphalidae, 7 sp. pieridae, 5 sp. from lycaenidae, 3 sp. From hesperidae and 3 sp. from papilionidae were recorded in all selective sites. The butterflies observed were categorized into groups based on their relative numbers; most common >9-10, common 6-8, rare 3-5, very rare 0-2. This study is used for academic as well as applied importance.         

scholarly journals Entender a natureza para projetar: a Paleta Vegetal do Projeto Paisagístico do Parque Capibaribe

2021 ◽  
Vol 14 (1) ◽  
pp. 281
Author(s):  
Joelmir Marques da Silva ◽  
Ana Raquel Santos de Meneses ◽  
Maiara Costa Mota
Keyword(s):  
Climate Change ◽  
Urban Forest ◽  
Public Spaces ◽  
Forest Fragments ◽  
Lowland Forest ◽  
Environmental Recovery ◽  
The Face ◽  
Environmental Network ◽  
The City ◽  
Selection Of

Ante as demandas globais emergentes relacionadas à conservação da natureza e às mudanças climáticas, a cidade do Recife, capital do Estado de Pernambuco, Brasil, vem buscando estratégias para enfrentar tais problemáticas. Entre os projetos em desenvolvimento destaca-se o do Parque Capibaribe que visa promover uma nova forma de experienciar a cidade atrelada à recuperação ambiental e viabilizada pela criação e valorização dos espaços públicos, notadamente aqueles que englobam porções de natureza, e por sua conexão aos fragmentos florestais urbanos, públicos ou privados, formando uma grande rede ambiental. Contudo, um dos grandes desafios estava na seleção de espécies vegetais da Floresta Ombrófila Densa das Terras Baixas, característica do sítio, para compor a Paleta Vegetal do Projeto Parque Capibaribe, por existir uma lacuna referente ao seu emprego no paisagismo. Desta forma, objetiva-se com este artigo, apresentar e discutir o processo da seleção das espécies que compõem esta Paleta Vegetal. Por meio de pesquisa bibliográfica, sobre levantamentos florísticos e fitossociológicos de fragmentos florestais próximos ao Rio Capibaribe, chegou-se a um total de 523 espécies, que posteriormente foram submetidas a critérios relacionados ao uso dos espaços e manutenção, resultando em 194 espécies de diferentes estratos.  Understanding nature in order to design: the Vegetation Palette of the Capibaribe Park Landscape ProjectA B S T R A C TIn the face of emerging global demands concerning nature conservation and climate change, Recife, capital of the State of Pernambuco, Brazil, has been seeking strategies to address these issues. Among the projects under development, the Capibaribe Park Project, which aims to promote a new way of experiencing the city in conjunction with environmental recovery, stands out for its creation and enhancement of public spaces, notably those that include pockets of nature, and their connection to fragments of public or private urban forest, forming a large environmental network. However, one of the major challenges has been the selection of plant species from the Dense Ombrophilous Lowland Forest, characteristic of the locality, to compose the Capibaribe Park Vegetation Palette, since there is a knowledge gap regarding their use in landscaping. The aim of this article is thus to describe the methodological process of selecting the species that make up this vegetation palette, which, through bibliographic research on floristic and phytosociological surveys of forest fragments near the Capibaribe River, reached a total of 523 species. From these, 194 species from different strata were subsequently selected according to space use and maintenance criteria.Keywords: Environmental Recovery, Urban Parks, Urban Sustainability, Landscape, Vegetation.

scholarly journals Diversity and Community Structure of Oribatid Mites (Acari, Oribatei) at Memorial Complexes of a Megapolis

2013 ◽  
Vol 47 (4) ◽  
pp. 291-297
Author(s):  
L. A. Kolodochka ◽  
O. S. Shevchenko
Keyword(s):  
Community Structure ◽  
Species Diversity ◽  
Species Complex ◽  
Common Species ◽  
Oribatid Mites ◽  
Direct Relation ◽  
City Center ◽  
Degree Of Dominance ◽  
Different Types ◽  
The City

Abstract In different types of substrate (soil, litter, lichens and mosses) collected at three memorial complexes (cemeteries) of Kyiv (Ukraine), 70 species from 57 genera, 34 families of oribatid mites were found. A few eurytopic species capable of tolerance to different types of pollution make up an essential part in each species complex. The species diversity and complexity of oribatid community structure at researched areas increased with distance from the city center. There was no direct relation between the degree of dominance of most common species and the cemetery’s relative remoteness from the center of the city.

ESTRUTURA, DIVERSIDADE E HETEROGENEIDADE DO ESTRATO REGENERANTE EM UM FRAGMENTO FLORESTAL URBANO APÓS 10 ANOS DE SUCESSÃO FLORESTAL

FLORESTA ◽  
2015 ◽  
Vol 45 (3) ◽  
pp. 535 ◽  
Author(s):  
Raphaela Vilela Eiras e Paiva ◽  
José Hugo Campos Ribeiro ◽  
Fabricio Alvim Carvalho
Keyword(s):  
Multivariate Analysis ◽  
Species Diversity ◽  
Urban Forest ◽  
Shannon Index ◽  
Forest Fragments ◽  
Ecological Groups ◽  
Small Fragment ◽  
Forest Fragment ◽  
Semideciduous Forest ◽  
Dalbergia Nigra

Este estudo visou avaliar a composição florística, a fitossociologia e a diversidade de espécies do estrato regenerante arbóreo de um pequeno fragmento (0,5 ha) de Floresta Estacional Semidecidual, após 10 anos de abandono, no perímetro urbano do município de Juiz de Fora, MG, Brasil. Os indivíduos da regeneração arbórea (altura ≥ 1 m e DAP < 5 cm) foram amostrados em 25 parcelas aleatórias de 5 x 5 m. Foram amostrados 1224 indivíduos pertencentes a 40 espécies. Houve uma forte predominância (> 90%) de espécies de estágios sucessionais iniciais (pioneiras e secundárias iniciais). Como reflexo da forte dominância ecológica observada, exercida principalmente pela elevada densidade das espécies Dalbergia nigra e Siparuna guianensis, o valor do índice de diversidade de espécies de Shannon (H’ = 2,38) foi muito inferior aos valores encontrados para fragmentos florestais maduros. Mesmo sendo um fragmento pequeno, isolado e em estágio inicial de sucessão secundária, análises multivariadas (agrupamento e DCA) evidenciaram a formação de grupos florísticos e uma forte diferenciação no arranjo das espécies, evidenciando a heterogeneidade típica de florestas tropicais. Embora apresente uma baixa diversidade, esse fragmento urbano tem funções ecológicas e sociais importantes para a região, que carece de áreas verdes para a conservação da flora nativa.AbstractStructure, diversity and heterogeneity of regeneration stratum in an urban forest fragment after 10 years of forest succession. This research aimed to evaluate the floristic composition, phytosociology and species diversity of the regenerating woody stratum of a small fragment (0.5 ha) of Semideciduous Forest, after 10 years of abandonment, in the municipality of Juiz de Fora, MG, Brazil. All woody individuals (height ≥ 1 m dbh <5 cm) were sampled at 25 random plots of 5 x 5 m. We sampled 1224 individuals belonging to 40 species. There was a strong predominance (> 90%) of species of early successional stages (pioneer and early secondary). Reflecting the strong observed ecological dominance, exercised primarily by the high density of the species Dalbergia nigra and Siparuna guianensis, species diversity value (Shannon index H '= 2.38) was much lower than the values found for mature forest fragments in this region. Although a small fragment, isolated and in early stages of secondary succession, the multivariate analysis (cluster and DCA) revealed the formation of distinct floristic groups and a strong differentiation in the arrangement of the species, showing the tropical forests typical heterogeneity. Although it has a low diversity, this urban fragment has ecological and social importance to the region, that present lack of green areas to conserve the native flora.Keywords:  Phytosociology; multivariate analysis; gradient analysis; ecological groups.

scholarly journals Floristic Composition and Community Structure of Epiphytic Angiosperms in an Urban Forest Fragment in the Eastern Amazon

2021 ◽  
Vol 3 (4) ◽  
Author(s):  
Josélia Rozanny Vieira Pacheco ◽  
Felipe Fajardo Villela Antolin Barberena
Keyword(s):  
Community Structure ◽  
Urban Forest ◽  
Diversity Index ◽  
Species Conservation ◽  
Floristic Composition ◽  
Neotropical Region ◽  
Forest Fragments ◽  
Forest Fragment ◽  
Importance Value ◽  
Vascular Epiphytes

Vascular epiphytes are one of the most important forest components, contributing to microclimatic maintenance. These plants find ideal conditions for development in the Amazon due to the spatial heterogeneity and high temperature and humidity typical of this biome. In recent years, the Brazilian Amazon has undergone dramatic changes in its landscape, mainly due to the increase in deforestation and fire rates. We present here the floristic composition and analyze the community structure of epiphytic angiosperms of an urban forest fragment in Eastern Amazon. A total of 71 epiphytic individuals were recorded belonging to eight species and four families. Orchidaceae was the most representative family, corroborating the pattern for surveys of epiphytic diversity in the Neotropical region. Epiphytic species were found on 24 individuals of 10 tree species. The epiphytic importance value (IVe) was low for all species, except for Aechmea tocantina and Rhipsalis baccifera. Cactaceae was the family with the highest IVe. Most epiphytes were found in the crown of trees (83.1%). The diversity index of the fragment was H’ = 1.80 and the equity index was J= 0.87, reflecting the absence of highly dominant species. Conservation of urban forest fragments is necessary for the maintenance of epiphytic flora and ecosystem services.

Toward Urban Forest Diversity: Resident Tolerance for Mixtures of Tree Species Within Streets

2019 ◽  
Vol 45 (2) ◽  
Author(s):  
Lyndal Plant ◽  
Dave Kendal
Keyword(s):  
Species Diversity ◽  
Tree Species ◽  
Urban Forest ◽  
Urban Climate ◽  
Tree Species Diversity ◽  
Local Resident ◽  
Forest Diversity ◽  
Composition And Structure ◽  
Street Tree ◽  
The City

Municipalities are setting targets for increasing street tree species diversity to support resilience and enhance the supply of ecosystem services from the urban forest. Assessments of street tree composition and structure, and consequent vulnerability to the stresses of urban climate change, pests, and disease, offer guidance for such targets. However, assessing local resident preferences toward species diversity within streets is also important to achieving such targets. Much of the research on street tree preference to date has focused on resident preferences for individual street tree characteristics, without reference to collective/contextual characteristics such as species diversity. We inferred resident preferences for collective street tree features, including species richness, from nearby house sale prices in the city of Brisbane, Australia. While home-buyers were willing to pay a premium for houses on streets with mature and aged trees, their tolerance for mixtures of species was limited to no more than six species nearby. Tolerance also varied within the city with greater sensitivity to mixtures of species in locations of greater socio-economic advantage. These findings suggest that increased diversity will not automatically be accepted by the community. Municipalities need to be cautious in their approach to increasing tree species diversity at finer scales, like streetscapes, within the urban forest.

scholarly journals Ecological responses of periphyton dry mass and epilithic diatom community structure for different atrazine and temperature scenarios

Water SA ◽  
2019 ◽  
Vol 45 (4 October) ◽  
Author(s):  
Adroit Takudzwa Chakandinakira ◽  
Tongayi Mwedzi ◽  
Tawanda Tarakini ◽  
Taurai Bere
Keyword(s):  
Climate Change ◽  
Community Structure ◽  
Species Diversity ◽  
Dry Weight ◽  
Dry Mass ◽  
Taxonomic Composition ◽  
Interactive Effects ◽  
Diatom Community ◽  
Glass Substrates ◽  
Temperature Levels

Climate change–induced temperature increase may influence the ecotoxicity of agricultural herbicides such as atrazine and consequently negatively impact aquatic biota. The objective of this study was to assess the effects of increased temperature on the ecotoxicity of atrazine to diatom community structure and stream periphyton load using laboratory microcosm experiments. A natural periphyton community from the Mukwadzi River, Zimbabwe, was inoculated into nine experimental systems containing clean glass substrates for periphyton colonisation. Communities were exposed to 0 µg∙L-1 (control), 15 µg∙L-1 and 200 µg∙L-1 atrazine concentrations at 3 temperature levels of 26°C, 28°C and 30°C. Periphyton dry weight and community taxonomic composition were analysed on samples collected after 1, 2 and 3 weeks of colonisation. A linear mixed-effects model was used to analyse the main and interactive effects of atrazine and temperature on dry mass, species diversity, evenness and richness. Temperature and atrazine had significant additive effects on species diversity, richness and dry mass. As temperature increased, diatom species composition shifted from heat-sensitive species such as Achnanthidium affine to heat-tolerant species such as Achnanthidium exiguum and Epithemia adnata. Increasing temperature in aquatic environments contaminated with atrazine results in sensitive and temperature-intolerant diatoms being eliminated from periphyton communities. Climate change will exacerbate effects of atrazine on periphyton dry mass and diatom community structure.

scholarly journals TOPOPHILIA AND ENVIRONMENTAL VALUATION OF URBAN FOREST FRAGMENTS IN AN AMAZONIAN CITY

2018 ◽  
Vol 21 (0) ◽  
Author(s):  
HENRIQUE DOS SANTOS PEREIRA ◽  
STEPHANY ANRY KUDO ◽  
SUZY CRISTINA PEDROZA DA SILVA
Keyword(s):  
Urban Landscape ◽  
Urban Forest ◽  
Environmental Valuation ◽  
Forest Fragments ◽  
Environmental Resources ◽  
Socioeconomic Variables ◽  
Consumptive Use ◽  
Forest Remnants ◽  
Positive Feelings ◽  
The City

Abstract The factors that can influence the environmental valuation of urban forest fragments (UFFs) in two neighborhoods of the city of Manaus (AM) were assessed. The valuation data were obtained through the technique of pile sorting followed by ranking, considering 14 socioenvironmental attributes. Most of the residents (59%, N = 69) mentioned positive feelings (topophilia) regarding the conservation of the fragments in the urban landscape. The attributes associated with the ecocentric vision were those that received the highest positive values, followed by anthropocentric attributes associated with the direct non-consumptive use of environmental resources, such as “aesthetic” and “learning”. Residents who live closer tended to value the fragment more than distant residents, and the opposite occurred when there was an association between the presence of the fragment and violence and crime in the neighborhood. Among the socioeconomic variables investigated, only the time as a resident seemed to be related to the way the city residents value these forest remnants.

scholarly journals Snacks in the city: the diet of hedgehogs in Auckland urban forest fragments

2019 ◽  
Vol 43 (2) ◽  
Author(s):  
Catherine Nottingham ◽  
◽  
Alistair Glen ◽  
Margaret Stanley
Keyword(s):  
Urban Forest ◽  
Forest Fragments ◽  
The City

scholarly journals Urban Forest Sustainability in Residential Areas in the City of Santo Domingo

Forests ◽  
2021 ◽  
Vol 12 (7) ◽  
pp. 884
Author(s):  
Solhanlle Bonilla-Duarte ◽  
Víctor Gómez-Valenzuela ◽  
Alma-Liz Vargas-de la Mora ◽  
Agustín García-García
Keyword(s):  
Climate Change ◽  
Ecosystem Services ◽  
Forest Cover ◽  
Urban Forest ◽  
Added Value ◽  
Forest Planning ◽  
Residential Areas ◽  
Santo Domingo ◽  
Sustainability Index ◽  
The City

Cities are territories vulnerable to climate change. An alternative to increase resilience and mitigate the effects of the climate context is urban forest planning to increase ecosystem services. This research constructed a forest cover sustainability index, based on 147 semi-structured interviews with residents of four residential areas of the city of Santo Domingo (Gazcue, Zona Colonial, Ciudad Nueva, and San Carlos), in which information was collected based on both benefit perception and tree management in their home and nearby public areas. The socioeconomic characteristics of the population and the information gathered from the measurements of the urban forest in both public and private areas of the city during the 2016–2019 period were considered, including these four residential areas, which established the ecosystem services provided by the urban forest. The results showed that Gazcue had a higher value in the forest cover sustainability index. The factors that influenced this result were: job stability, medium-high income, and property ownership. Likewise, the added value of the territory, whether in terms of tourism or the socioeconomic value of the population that inhabits it, is closely related to a greater attention to urban planning, prioritizing the conservation and landscape harmony that the arboreal component can provide. In conclusion, urban forest planning in cities should consider tree species, the design and structure of spatial arrangements, and a competent legal framework that can meet the challenges of territorial sustainability and contribute to the resilience and mitigation of climate change impacts.

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