Diversity, floristic composition, and structure of the woody vegetation of the Cerrado in the Cerrado–Amazon transition zone in Mato Grosso, Brazil

Abstract Population growth in urban areas changes freshwater ecosystems, and this can have consequences for macrophyte communities as can be seen in the municipalities that border the Capibaribe River, Pernambuco, Brazil. This study reports the effects of urbanization on the composition and structure of macrophyte communities in areas along that river. The following urbanized and non-urbanized sampling sites were chosen: Sites 1 and 2 (municipality of Santa Cruz do Capibaribe), Sites 3 and 4 (municipality of Toritama), and Sites 5 and 6 (metropolitan region of Recife). These sites were visited every two months from January to July 2013 to observe seasonal variation (wet and dry seasons). Thirty-one species were identified. Generally, the non-urbanized sites had a higher number of species. Multivariate analyses indicated significant overall differences between urbanized and non-urbanized areas (R = 0.044; p < 0.001) and between seasons (R = 0.018; p < 0.019). Owing to the large variation in physical, chemical, and biological characteristics between urbanized and non-urbanized areas, we found that urbanization significantly influenced the floristic composition and structure of macrophyte communities.

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Ants (Hymenoptera: Formicidae) from an Amazonian fragmented landscape, Juara, Mato Grosso, Brazil, with new records of ant species

Papéis Avulsos de Zoologia ◽

10.11606/1807-0205/2018.58.40 ◽

2018 ◽

Vol 58 ◽

pp. e20185840

Author(s):

Ricardo Eduardo Vicente ◽

Alexandre Casadei Ferreira ◽

Rogério Conceição Lima dos Santos ◽

Lívia Pires do Prado

Keyword(s):

Transition Zone ◽

New Records ◽

The State ◽

Fragmented Landscape ◽

General Knowledge ◽

Pitfall Traps ◽

Mato Grosso ◽

Brazilian State ◽

First Time

The state of Mato Grosso is the 3rd largest Brazilian state, is covered with three major Brazilian biomes, including the Pantanal, Cerrado, and Amazonia. To date, 449 ant species are recorded in literature for the state. In the present work, we documented the ants sampled along a fragmented landscape, in the municipality of Juara, in the Cerrado-Amazon transition zone in the state of Mato Grosso, Brazil. The ant species were captured with Pitfall traps installed in 20 trails with 10 traps in each (totaling 200). Our results show 151 species, belonging to 43 genera and eight subfamilies, of which 28 species were recorded for the first time in the state and five species recorded for the first time in Brazil. Most genera collected were Pheidole Westwood, 1839 (45 species) followed by Crematogaster Lund, 1831 (11 species). By highlighting species recorded for the first time in state of Mato Grosso and Brazil, we hope to encourage new discoveries and increase the general knowledge of the ant fauna of different biomes in the region.

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Community Arctio-Artemisetum vulgaris (Tx. 1942) Oberd. et al. 1967.: The most widespread ruderal community at Pancevacki rit

Pesticidi i fitomedicina ◽

10.2298/pif0902113s ◽

2009 ◽

Vol 24 (2) ◽

pp. 113-121

Author(s):

Radmila Stankovic-Kalezic ◽

Slobodan Jovanovic ◽

Vaskrsija Janjic ◽

Ljiljana Radivojevic

Keyword(s):

Floristic Composition ◽

Anthropogenic Influences ◽

Composition And Structure

A several-year investigation of distribution, phytocoenological differentiation, floristic composition and structure of the ruderal flora and vegetation, and relative anthropogenic influences was conducted in the area of Pancevacki rit. The study focused on the ruderal community Arctio-Artemisetum vulgaris, the most widespread of 10 ruderal communities identified in a detailed phytocoenological analysis of the location of Pancevacki rit.

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Composition and Structure of the Diamond–Low Carbon Steel Transition Zone Obtained by Contact Heating in Vacuum at the Eutectic Temperature of Fe–C

Russian Journal of Non-Ferrous Metals ◽

10.3103/s1067821221050126 ◽

2021 ◽

Vol 62 (5) ◽

pp. 592-601

Author(s):

P. P. Sharin ◽

M. P. Akimova ◽

S. N. Makharova ◽

S. P. Yakovleva ◽

V. I. Popov

Keyword(s):

Carbon Steel ◽

Transition Zone ◽

Eutectic Temperature ◽

Low Carbon Steel ◽

Low Carbon ◽

Composition And Structure ◽

Contact Heating

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Composition and community structure of mangroves distributed on the east coast of Marajó Island, Brazil

10.21203/rs.3.rs-1196739/v1 ◽

2022 ◽

Author(s):

Barbara Luzia Santos de Oliveira Faro ◽

Priscila Sanjuan de Medeiros-Sarmento ◽

Norma Ely Santos Beltrão ◽

Paulo Weslem Portal Gomes ◽

Ana Cláudia Caldeira Tavares-Martins

Keyword(s):

Floristic Composition ◽

Distribution Patterns ◽

Major Influence ◽

Structural Development ◽

Black Water ◽

Composition And Structure ◽

Marine System ◽

Marajó Island ◽

White Water ◽

Degree Of Similarity

Abstract Mangroves in the Amazon are influenced by several environmental conditions that determine the composition and structural development of the arboreal flora, which results in different distribution patterns. In this study, we sought to answer two questions: (1) what is the composition and structure of the mangroves near the mouth of the Amazon River in Marajó Island? (2) Are the fringe and inland mangroves more similar or dissimilar in terms of floristic composition? For this, we delimited a fringe zone and an inland zone about 1 km apart from each other. In each zone, we distributed five 400-m2 plots. The individuals were grouped into diameter and height classes and structural and phytosociological parameters were calculated. Ten species were recorded in the mangroves, of which seven are typical of white-water (várzea) and black-water (igapó) flooded forest ecosystems. We believed the adjacent ecosystems and the hydrological network are inducing the establishment of such species. The composition and structure of mangroves did not differ statistically between zones, and the degree of similarity may be a result of similar environmental factors in these zones such as low relief and high frequency of macrotides. We conclude that the vegetation of the studied mangroves has a major influence of the fluvial-marine system of the great rivers of the Amazon associated with a diversity of ecosystems that, together, generate greater floristic richness when compared to mangroves in other regions.

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An Assessment of Multiple Drivers Determining Woody Species Composition and Structure: A Case Study from the Kalahari, Botswana

Land ◽

10.3390/land8080122 ◽

2019 ◽

Vol 8 (8) ◽

pp. 122 ◽

Cited By ~ 1

Author(s):

Meyer ◽

Holloway ◽

Christiansen ◽

Miller ◽

D’Odorico ◽

...

Keyword(s):

Species Abundance ◽

Woody Species ◽

Environmental Variable ◽

Woody Vegetation ◽

Tobit Regression ◽

Species Identity ◽

Rainfall Gradient ◽

Composition And Structure ◽

Species Richness And Abundance ◽

The Impact

Savannas are extremely important socio-economic landscapes, with pastoralist societies relying on these ecosystems to sustain their livelihoods and economy. Globally, there is an increase of woody vegetation in these ecosystems, degrading the potential of these multi-functional landscapes to sustain societies and wildlife. Several mechanisms have been invoked to explain the processes responsible for woody vegetation composition; however, these are often investigated separately at scales not best suited to land-managers, thereby impeding the evaluation of their relative importance. We ran six transects at 15 sites along the Kalahari transect, collecting data on species identity, diversity, and abundance. We used Poisson and Tobit regression models to investigate the relationship among woody vegetation, precipitation, grazing, borehole density, and fire. We identified 44 species across 78 transects, with the highest species richness and abundance occurring at Kuke (middle of the rainfall gradient). Precipitation was the most important environmental variable across all species and various morphological groups, while increased borehole density and livestock resulted in lower bipinnate species abundance, contradicting the consensus that these managed features increase the presence of such species. Rotating cattle between boreholes subsequently reduces the impact of trampling and grazing on the soil and maintains and/or reduces woody vegetation abundance.

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EFEITO DA EXPLORAÇÃO NA RIQUEZA FLORÍSTICA E DIVERSIDADE EM UMA FLORESTA ECOTONAL DA REGIÃO NORTE MATO-GROSSENSE

FLORESTA ◽

10.5380/rf.v41i2.21877 ◽

2011 ◽

Vol 41 (2) ◽

Author(s):

Chirle Colpini ◽

Versides Sebastião de Moraes e Silva ◽

Thelma Shirlen Soares ◽

José Vespasiano Lisboa Assumpção ◽

Roberto Chiaranda

Keyword(s):

Species Diversity ◽

Floristic Composition ◽

Wiener Index ◽

Northern Region ◽

Floristic Diversity ◽

Mato Grosso ◽

Floristic Richness ◽

Before And After ◽

Logged Forest ◽

Southern Amazonia

O objetivo deste estudo foi avaliar as mudanças ocorridas na riqueza e diversidade de espécies em uma floresta ecotonal na região norte mato-grossense. Os dados foram coletados em três ocasiões (2001, antes da exploração, e em 2003 e 2007, após a exploração), em 74 parcelas de 0,25 ha, sendo 69 para estudar a floresta não explorada e 5 para a explorada, com a retirada dos fustes de árvores com diâmetros comercialmente aceitos no mercado. Todos os indivíduos com diâmetro a 1,3 m de altura do solo (Dap) ≥ 17 cm foram mensurados e identificados. A diversidade florística foi avaliada por meio do quociente de mistura de Jentsch e pelo índice de Shannon-Wiener e a equabilidade pelo índice de Pielou. A variação da riqueza e diversidade de espécies antes e após a exploração madeireira foi pequena, o que confirma o baixo impacto da exploração na composição e diversidade das espécies da floresta.Palavras-chave: Diversidade; equabilidade; Amazônia Meridional. AbstractLogging effects on floristic richness and species diversity in an ecotonal forest in northern region of Mato Grosso state, Brazil. The aim of this research was to evaluate changes in relation to floristic richness and species diversity in an ecotonal forest in northern region of Mato Grosso State, Brazil. Data had been collected along three different moments (2001 [before logging], in 2003 and 2007 [after logging]) in 74 0.25-ha plots (69 in unlogged forest and 5 in logged forest). Trees with diameter ≥ 17 cm and 1.3 m height (dbh) had been measured and identified. Floristic diversity was evaluated by Jentsch Coefficient of Mixture and Shannon-Wiener index as well as its equability by Pielou’s Index. There were little variations before and after logging in relation to floristic richness and species diversity, it confirms low impact of exploration on floristic composition and species diversity of the forest.Keywords: Diversity; equability; Southern Amazonia.

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A comparative study of five cerrado areas in southern Mato Grosso, Brazil

Edinburgh Journal of Botany ◽

10.1017/s0960428600003036 ◽

1991 ◽

Vol 48 (3) ◽

pp. 307-332 ◽

Cited By ~ 15

Author(s):

A. T. Oliveira-Filho ◽

F. R. Martins

Keyword(s):

Community Structure ◽

Comparative Study ◽

Hierarchical Classification ◽

Floristic Composition ◽

Mato Grosso ◽

Savanna Woodland ◽

Classification Techniques ◽

Polar Ordination ◽

Cerrado Savanna

Quantitative descriptions of the woody flora and soil analyses are given for five areas of cerrado (savanna woodland) near Cuiabá, Mato Grosso state, Brazil. Comparisons are made of the floristic composition and community structure of these areas using polar ordination and hierarchical classification techniques.Descrições quantitativas da flora lenhosa e anâlises de solos são apresentadas para cinco áreas de cerrado nas proximidades de Cuiabá, Mato Grosso. São realizadas comparações entre estas areas em composição florística e estrutura comunitária utilizando técnicas de ordenação polar e classifiçãcao hierárquica.

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DIVERSITAS FLORISTIK DAN STRUKTUR VEGETASI DI HUTAN GUNUNG PAYUNG, TAMAN NASIONAL UJUNG KULON

BERITA BIOLOGI ◽

10.14203/beritabiologi.v17i3.3434 ◽

2018 ◽

Vol 17 (3) ◽

Author(s):

Purwaningsih Purwaningsih ◽

Tika D. Atikah

Keyword(s):

Forest Structure ◽

National Park ◽

Floristic Composition ◽

Forest Stand ◽

Floristic Diversity ◽

Lagerstroemia Speciosa ◽

Large Numbers ◽

Composition And Structure ◽

Quadrat Method ◽

Artocarpus Elasticus

A floristic diversity and vegetation forest structure was carried out on the Mount Payung, Ujung Kulon National Park. The objective was to floristic composition and structure of the forest located at the peninsula of Ujung Kulon, Banten. The study was conducted using the quadrat method by establishing plots of 5000 m2 each at two locations Pasir Ipis and Gunung Keneng, thus the total area sampled was 1 ha. They were Plot Pasir Ipis and Plot Gunung Keneng. A total of 1898 trees comprising 105 species of 74 genera and 43 families were recorded. The number of species at Pasir Ipis higher (90 species) than plot Gn Keneng (61 species). Based on calculation the important value indexes (IVI), there were some dominan species with IVI >10 at Pasir Ipis Neesia altissima (IV=21,55), Barringtonia racemosa (17,89), Payena acuminata (13,35) and Neonauclea lanceolata (12,37). The dominated species at Plot Gn Kendeng were Pseuduvaria reticulata (IV= 34,30), Dillenia excelsa (27,62), Lagerstroemia speciosa (20,89), Popowia pisocarpa (17,57). The structure of forest could be inferred from the diameter and height of trees. The diameter measurements showed that 75,57 % of trees in plot Pasir Ipis and 80,51 % in plot Gunung Kendeng consist of small individuals with diameters between 10-20 cm. Trees with large diameters of >100 cm occurred in two plots among them Barringtonia racemosa, Polyalthia lateriflora, Popowia pisocarpa, Artocarpus elasticus. The presence of large numbers of small trees and lesser numbers of trees with large diameters in a forest stand indicated that the stand was regenerating after heavy disturbance. The presence of the majority of trees with height of < 20 m (99 %) further confirmed the forest’s dynamic status.

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Stand structure and growth form of the birch transition community in an industrially damaged ecosystem, Sudbury, Ontario

Canadian Journal of Forest Research ◽

10.1139/x85-131 ◽

1985 ◽

Vol 15 (5) ◽

pp. 809-817 ◽

Cited By ~ 19

Author(s):

G. I. James ◽

G. M. Courtin

Keyword(s):

Forest Fires ◽

Growth Form ◽

Stand Structure ◽

Floristic Composition ◽

Past Century ◽

Morphological Development ◽

Metal Mining ◽

Composition And Structure ◽

Woodland Regeneration ◽

Crown Dieback

The anthropogenic birch transition community has developed in the vicinity of Sudbury, Ont., as a result of base-metal mining and smelting, logging, and forest fires over the past century. This study investigates the floristic composition and structure of an exposed ridge site and a protected woodland site in this community, a coppice woodland dominated by Betulapapyrifera Marsh. and Acerrubrum L. For convenience in the field, vegetation was classified into growth forms I to V on the basis of morphological development and stem diameter to separate multiple-stemmed stools from single-stemmed individuals and seedlings from saplings of seedling size but older than 1 year. The ridge was dominated by small stools (growth form II) of B. papyrifera, whereas both large stools (growth form I) and small stools of B. papyrifera and A. rubrum characterized the woodland. No A. rubrum and only a few B. papyrifera seedlings became established at the ridge. Seedlings that survive develop into growth form II while still less than 1 m high. At the woodland, regeneration also was low, but A. rubrum seedlings were more frequent than those of B. papyrifera. Lack of seedlings, the persistence of coppicing, and periodic crown dieback maintain this coppice woodland in its present form so that little change with time is expected.

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