Water body type and land cover shape the dragonfly communities (Odonata) in the Pampa biome, Rio Grande do Sul, Brazil

Abstract: Many studies have reported that the interaction between water mite larvae and their Odonata hosts affects mating success, flight, and longevity. Males and females of Odonata species collected in the steppes and coastal plains (Pampa Biome) of Rio Grande do Sul were analyzed. Mites were removed when present and the prevalence and intensity of parasites was calculated. The aim of this study was to search and report new Odonata hosts species that are parasitized by water mite larvae and also to evaluate the prevalence and intensity rates; the differences in mite occurrence and frequency between males and females, and between thorax and abdomen of the dragonflies and damselflies in the southern Pampa biome located in Rio Grande do Sul. A total of 162 larval mites were found associated to two Odonata families: Coenagrionidae (Acanthagrion lancea Selys, 1876, Ischnura capreolus Hagen, 1861 and Ischnura fluviatilis Selys, 1876) and Libelullidae (Micrathyria ocellata Martin, 1897 and Perithemis mooma Kirby, 1889). All mites were identified as Arrenurus (Arrenurus) sp. (Arrenuridae) and showed high numbers when attached to I. capreolus (55.5%), I. fluviatilis (33.3%), followed by low numbers on M. ocellata (6.1%), A. lancea (3.7%), and P. mooma (1.2%). Mites were found on males and females of I. capreolus and I. fluviatilis, females of A. lancea and P. mooma and in M. ocellata only in males. As the parasitized Odonata species are generalist and abundant in all water body types, traits associated with mating and oviposition or larval behavior are believed to explain the frequency of parasitism in these species.

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Reptiles of the Parque Estadual de Itapuã, state of Rio Grande do Sul, southern Brazil

Check List ◽

10.15560/8.5.847 ◽

2012 ◽

Vol 8 (5) ◽

pp. 847 ◽

Cited By ~ 2

Author(s):

Gilberto Alves de Souza Filho ◽

Laura Verrastro

Keyword(s):

Rio Grande ◽

Southern Brazil ◽

Rio Grande Do Sul ◽

Conservation Unit ◽

Pampa Biome

Herein we provide a list of reptiles from Parque Estadual de Itapuã, a conservation unit of integral protection located in the municipality of Viamão, state of Rio Grande do Sul, southern Brazil and inserted in the domains of the Pampa Biome. The study was carried out from February 2003 to July 2004. We recorded 39 species: 23 snakes, eight lizards, four testudines, three amphisbaenians and one crocodilian. Through the knowledge of the species in the area, we justify the importance of preserving this important natural remnant.

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Preliminary dragonfly (Odonata) species list from the Pampa biome in Rio Grande do Sul, Brazil, with ecological notes for 19 new records for the State

Biota Neotropica ◽

10.1590/1676-0611-bn-2017-0374 ◽

2017 ◽

Vol 17 (4) ◽

Cited By ~ 8

Author(s):

Samuel Renner ◽

Eduardo Périco ◽

Gerson Júnior Ely ◽

Göran Sahlén

Keyword(s):

Rio Grande ◽

The State ◽

Water Bodies ◽

Rio Grande Do Sul ◽

Species List ◽

Surrounding Water ◽

Pampa Biome ◽

Small Streams ◽

Biogeographical Region ◽

Southern Half

Abstract An inventory of Odonata was carried out in the southern half of the state of Rio Grande do Sul, Brazil, in the Pampa biome. Originally, this biogeographical region was covered mostly by open fields and grassland, with sections of higher vegetation surrounding water bodies and rocky hills. Today the landscape is fragmented due to agricultural activities, mainly cattle farming, rice crops and forest plantations. Our survey was conducted in three municipalities from this region, between March 2015 and April 2016. Aiming at a general overview of the species composition, our sampling sites were selected on a wide basis, including lakes, bogs, temporary water bodies, small streams and river sections. Eighty two species of Odonata were collected comprising 40 genera and seven families. The dominant families were Libellulidae (56,1%), Coenagrionidae (24,5%) and Aeshnidae (7,3%). We found a diverse odonate assemblage, adding 19 new species records for the state of Rio Grande do Sul.

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Semiaquatic bugs (Hemiptera, Heteroptera, Gerromorpha) from Rio Grande do Sul, southern Brazil

Check List ◽

10.15560/17.5.1323 ◽

2021 ◽

Vol 17 (5) ◽

pp. 1323-1343

Author(s):

Juliana Mourão dos Santos Rodrigues ◽

Oséias Martins Magalhães ◽

Evaldo Alves Joaquim Júnior ◽

José Ricardo Inacio Ribeiro ◽

Felipe Ferraz Figueiredo Moreira

Keyword(s):

Atlantic Forest ◽

New Records ◽

Rio Grande ◽

The State ◽

Southern Brazil ◽

Rio Grande Do Sul ◽

Pampa Biome ◽

First Time

Rio Grande do Sul (RS) is the southernmost state in Brazil and includes areas within the Pampa and Atlantic Forest biomes. The semiaquatic bugs (Hemiptera, Heteroptera, Gerromorpha) from RS are poorly known, with only 14 previously recorded species. We carried out two expeditions in this state, in 2002 and 2019, across 19 municipalities. Here, we provide new records for 19 species, of which 13 are recorded for the first time from the state, five have their distributions expanded, and one is recorded again from a same locality previously reported in the literature. Furthermore, 13 species were collected for the first time in the Pampa biome and one in the Atlantic Forest.

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Nitrogen fertilization in the growth phase of 'Chardonnay' and 'Pinot Noir' vines and nitrogen forms in sandy soil of the Pampa Biome

Revista CERES ◽

10.1590/0034-737x201764040013 ◽

2017 ◽

Vol 64 (4) ◽

pp. 433-440 ◽

Cited By ~ 1

Author(s):

Felipe Lorensini ◽

Carlos Alberto Ceretta ◽

Lessandro De Conti ◽

Paulo Ademar Avelar Ferreira ◽

Max Kleber Laurentino Dantas ◽

...

Keyword(s):

Plant Height ◽

Sandy Soil ◽

Nitrogen Fertilization ◽

Dry Matter ◽

Rio Grande ◽

Pinot Noir ◽

Rio Grande Do Sul ◽

Mineral N ◽

Total N ◽

Pampa Biome

ABSTRACT Information on nitrogen fertilization in growing vines is still a very limited subject, especially for crops on sandy soils in the Pampa Biome in Rio Grande do Sul, where viticulture has expanded considerably in the last decade. This study aimed to assess the impact of N doses on growth of young plants of Chardonnay and Pinot Noir vines and N forms present in sandy soil in the Pampa Biome. The experiment was conducted from October 2011 to December 2012 in a vineyard in Santana do Livramento, in Southern Rio Grande do Sul State, in soil with 82 g kg-1 clay in the 0-20 cm layer. Vines of Chardonnay and Pinot Noir varieties were subjected to applications of 0, 10, 20, 40, 60, and 80 kg N ha-1 year-1. Total N in leaves, SPAD readings, stem diameter, plant height, and dry matter of the pruned material were evaluated in two growth cycles and three times. Soil samples were collected at 0-10 and 10-20 cm depths at four crop growth stages, in which N-NH4 +, N-NO3 -, and total N were analyzed and the mineral N was calculated. The N levels applied to young vines, although they did not provide relevant changes in the N-NH4 +, N-NO3 -, and mineral N contents in the soil, were able to increase the N content in the leaves, increasing plant vigor. because the reason is that there was an increase in stem diameter, plant height, and dry matter of pruned material in most evaluation periods. These parameters suggest better growth patterns and uniformity of young grapevines with possible positive effects in anticipation of production, demonstrating the importance of nitrogen fertilization strategies to the growing vines in the sandy soil conditions of the Pampa Biome.

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Land use changes after the period commodities rising price in the Rio Grande do Sul State, Brazil

Ciência Rural ◽

10.1590/0103-8478cr20160647 ◽

2017 ◽

Vol 47 (4) ◽

Cited By ~ 1

Author(s):

Vicente Celestino Pires Silveira ◽

◽

José Antonio González ◽

Eliana Lima da Fonseca ◽

◽

...

Keyword(s):

Land Use ◽

Atlantic Forest ◽

Rio Grande ◽

Raw Material ◽

Biodiesel Production ◽

World Population ◽

Rio Grande Do Sul ◽

Early 21St Century ◽

Pampa Biome ◽

The Impact

ABSTRACT: At the end of the 20th and early 21st century, agricultural systems incorporated definitively a new mission: to generate goods for a world population that continues to grow and whose way of life demand food with low environmental impact. Soybean is the main raw material for the production of biodiesel in Brazil, accountably responsible for 82.4% of the total produced between 2006 and 2013. The Brazilian state of Rio Grande do Sul (RS), which is formed by the Pampa and the Atlantic forest biomes, was responsible for 35.7% of the country's biodiesel production in the referred period. The aim of this paper was to verify the impact of the increased area of soybean cultivation in land use in Rio Grande do Sul State, in the period between 1990 and 2015, considering separately its two biomes (Pampa and Atlantic Forest) original areas, using both census dataset and satellite images. We used the period from 1990 to 2000 as before commodity rising price (BCRP) and the period from 2000 to 2013 as commodity rising price (CRP). The 505,162 ha from Atlantic Forest biome and 1,192,115ha from Pampa biome were added to soybean production in the CRP period. In the Atlantic Forest, this enlargement occurred in the border of the main production area, while in Pampa biome conversion of natural grassland to crop land was the main reason for the large increment in the cultivated area.

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Mammalia, Chiroptera, Molossidae, Molossus rufus É. Geoffroy, 1805: Distribution extension

Check List ◽

10.15560/8.2.291 ◽

2012 ◽

Vol 8 (2) ◽

pp. 291

Author(s):

Felipe B. Peters ◽

Paulo Ricardo de O. Roth ◽

Alexandre U. Christoff

Keyword(s):

Geographical Distribution ◽

Atlantic Forest ◽

New Records ◽

Rio Grande ◽

The State ◽

Rio Grande Do Sul ◽

Southern Limit ◽

Pampa Biome ◽

Forest Biome

This paper presents seven new records of occurrence of Molossus rufus for the state of Rio Grande do Sul, Brazil, three from the Atlantic Forest Biome and four from the Pampa Biome. The southern limit of the known geographical distribution of this species in Brazil is extended by 159 km.

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RELATIONSHIP BETWEEN ARBOREAL, TOPOGRAPHIC, AND EDAPHIC STRUCTURES IN A STRETCH OF A RIPARIAN FOREST IN THE PAMPA BIOME, RIO GRANDE DO SUL, BRAZIL

FLORESTA ◽

10.5380/rf.v49i4.59167 ◽

2019 ◽

Vol 49 (4) ◽

pp. 773

Author(s):

Ana Claudia Bentancor Araujo ◽

Helio Junior Bentancor Araujo ◽

Edenir Luis Grimm ◽

Solon Jonas Longhi

Keyword(s):

Natural Regeneration ◽

Environmental Variables ◽

Riparian Forest ◽

Rio Grande ◽

Rio Grande Do Sul ◽

Natural Area ◽

Eugenia Uniflora ◽

Main Species ◽

Pampa Biome ◽

Considerable Loss

Despite the considerable loss of natural area in the Pampa biome, the number of scientific studies carried out here is low; it is lower in terms of natural regeneration. Therefore, the present study analyzed arboreal shrub and natural regeneration as well as the influence of environmental variables on the distribution of a riverine forest of the Espinilho stream in the Pampa biome, Rio Grande do Sul. A hundred plots were systematically set for arboreal shrub sampling. To evaluate the regenerating component, two classes were established: Class I and Class II. The main species in the arboreal shrub were Ocotea acutifolia (Nees) Mez and Pouteria salicifolia (Spreng.) Radlk., while those in natural regeneration were Eugenia uniflora L. and Blepharocalyx salicifolius (Kunth) O.Berg. The characteristics of the relief, soil, and canopy conditioned the species of the arboreal shrub and regenerating strata.

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OCORRÊNCIA E DISTRIBUIÇÃO DA FLORA AMEAÇADA DE EXTINÇÃO NO PONTAL DA BARRA, PELOTAS (RS): ESPÉCIES ARBÓREAS E ARBUSTIVAS / OCCURRENCE AND DISTRIBUTION OF THREATENED FLORA SPECIES AT PONTAL DA BARRA, PELOTAS (RS): ARBOREOUS AND ARBUSTIVE SPECIES

Geographia Meridionalis ◽

10.15210/gm.v4i1.13445 ◽

2018 ◽

Vol 4 (1) ◽

pp. 29

Author(s):

Tiago Schuch Lemos Venzke ◽

Giovanni Nachtigall Maurício ◽

William Matzenauer

Keyword(s):

Biodiversity Conservation ◽

Endemic Species ◽

Rio Grande ◽

Environmental Conservation ◽

Brazilian Coast ◽

Vegetation Types ◽

Rio Grande Do Sul ◽

Conservation Unit ◽

High Importance ◽

Pampa Biome

O Pontal da Barra é uma área úmida localizada na Praia do Laranjal, município de Pelotas, Rio Grande do Sul e localizado no estuário da Laguna dos Patos. A área é rica em biodiversidade, abrigando várias espécies endêmicas dos biomas Mata Atlântica e em menor proporção do Bioma Pampa. Neste estudo, reportamos observações da presença de oito espécies de plantas ameaçadas de extinção no Pontal da Barra. Destacamos que a ocorrência de espécies da flora ameaçadas de extinção qualifica a região do Pontal da Barra e arredores como uma área de elevada importância para conservação ambiental. A transformação da área em unidade de conservação vai preservar um conjunto mundialmente único de tipos de vegetação e ecossistemas no estuário da Laguna dos Patos e incentivar o ecoturismo na Praia do Laranjal.ABSTRACT:Pontal da Barra is a wetland located on Laranjal Beach, in the municipality of Pelotas, Rio Grande do Sul, and located in the estuary of the Laguna dos Patos. The area is rich in biodiversity, sheltering several endemic species from the Atlantic Forest biomes and, to a lesser extent, of the Pampa biome. In this study, we report observations of the presence of eight species of plants threatened with extinction in Pontal da Barra. We emphasize that the occurrence of endangered flora species qualifies the region of Pontal da Barra and surroundings as an area of high importance for environmental conservation. The transformation of the area into a conservation unit will preserve a globally unique set of vegetation types and ecosystems in the Laguna dos Patos estuary and encourage ecotourism at Praia do Laranjal.Key words: Estuary; Brazilian coast, Biodiversity; Conservation; Marsh

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The diversity of Odonata adults’s at Pampa Biome from Brazil

Revista de Biología Tropical ◽

10.15517/rbt.v67i1.33285 ◽

2019 ◽

Vol 67 (1) ◽

Author(s):

Manoel Daltro Nunes Garcia Junior ◽

Matheus Rakes ◽

Juliano De Bastos Pazini ◽

Rafael Antonio Pasini ◽

Flávio Roberto Mello Garcia ◽

...

Keyword(s):

Species Diversity ◽

Environmental Conditions ◽

Rio Grande ◽

The State ◽

Southern Region ◽

Rio Grande Do Sul ◽

Insect Biodiversity ◽

Pampa Biome ◽

First Time ◽

Over Time

The growth of humankind has brought with it several environmental problems that have worsened over time, including the loss of insect biodiversity. The Odonata order have been indicated by several authors as relevant bioindicators for assessing and monitoring environmental conditions of specific locations. The main objective of this study was to conduct an inventory of the Odonata diversity in the Pampa Biome, of the Southern region of the state of Rio Grande do Sul, Brazil. The species survey was conducted between November 2014 and October 2015. Adult insects were collected in Capão do Leão, Pelotas and Rio Grande cities. Each location was visited nine times, totalizing 54 samplings. Entomological nets were used for capturing adult insects, which were then kept in entomological envelopes. The identification of the specimens was carried out with taxonomic keys of Lencioni and Heckman. In addition, Chao-1, the Shannon-Wiener and Jackknife indexes were associated with the sampling areas. During the species survey a total of 2 680 Odonata specimens were collected, representing 45 species encompassed in 22 genera and six families. The Libellulidae and Coenagrionidae families were registered in 60 and 30 % of the specimens sampled, followed of the Aeshnidae, Calopterygidae, Gomphidae and Lestidae, of reduced occurrence. The genera Erythrodiplax, Micrathyria and Ischnura were found at least once in all the visited sites. The study resulted in the registration for the first time of the following species: Progomphus complicatus Selys, Lestes minutus Selys, Homeoura ambigua Ris, and Tauriphila xiphea Ris. These species were not previously reported in any Odonata study of the Brazilian state of Rio Grande do Sul. In regard to Odonata diversity in the Southern region of Rio Grande do Sul, Libellulidae and Coenagrionidae are the families more abundants. Erythrodiplax and Micrathyria are the most common genera. Miathyria marcella represented 9.6 % of all collected libellulidae and was the most abundant specie. Capão do Leão has the largest species diversity (wealth), the largest number of collected specimens and more diversity than Pelotas and Rio Grande. However, the results showed that the Odonatofauna in the State are still little known, and new studies are needed to better describe this group in other regions.

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