Can Rubber Crop Systems Recover Termite Diversity in Previously Degraded Pastures in the Colombian Amazon Region?

Introduction. COVID-19 is a pathology caused by the SARS-CoV2 virus. The World Health Organization has reported more than 94 million cases and two million deaths worldwide. Objective: To describe the seroprevalence, spatial distribution, and clinical and sociodemographic variables of SARS-CoV2 in a community of the Colombian Amazon region. Methods. In December 2020, a cross-sectional observational study was carried out in a population located in the Colombian Amazon in the municipality of Mitú. Sociodemographic and clinical data were taken. Besides, 590 blood samples were taken, and an antibody detection was carried out with an ELISA and a recombinant protein N antigen of SARS-CoV2. Results. A seroprevalence of 57.6% was observed. The highest proportion of the infection is located in inter-municipal transport zones. The bivariate analysis did not show differences in the SARS-CoV2 infection rate concerning the variables sex, age-range, and the presence of comorbidities (P> 0.05). The bivariate and multivariate analysis showed that being symptomatic and presenting neurological manifestations of the upper respiratory tract are clinical variables associated with SARS-CoV2 infection (P <0.05). One of the causes of this virus's high spread in this community could be that 53.3% of the people were asymptomatic. Conclusions. Our data showed a high burden and transmission of SARS-CoV-2 in this indigenous community. This could be linked to cultural behaviors and the high infection rate in asymptomatic patients.

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A preliminary checklist of soil ants (Hymenoptera: Formicidae) of Colombian Amazon

Biodiversity Data Journal ◽

10.3897/bdj.6.e29278 ◽

2018 ◽

Vol 6 ◽

Cited By ~ 2

Author(s):

Daniel Castro ◽

Fernando Fernández ◽

Andrés Meneses ◽

Maria Tocora ◽

Stepfania Sanchez ◽

...

Keyword(s):

New Records ◽

River Basins ◽

Amazon Region ◽

Different Depths ◽

Colombian Amazon ◽

Ant Diversity

This paper presents an updated list of soil ants of the Colombian Amazon collected in three different river basins: the Amazon, the Caquetá and the Putumayo. The list includes 10 subfamilies, 60 genera and 218 species collected from TSBF monoliths at four different depths (Litter, 0 - 10 cm, 10 - 20 cm and 20 - 30 cm). This updated list increases considerably the knowledge of edaphic macrofauna of the region, due to the limited published information about soil ant diversity in the Colombian Amazon region.This is the first checklist of soil ant diversity of the Colombian Amazon region. Six new records of species for Colombia are exposed:Acropygatricuspis(LaPolla, 2004),Typhlomyrmexclavicornis(Emery, 1906),Typhlomyrmexmeire(Lacau, Villemant & Delabie, 2004),Cyphomyrmexbicornis(Forel, 1895),Megalomyrmexemeryi(Forel, 1904) andMyrmicocryptaspinosa(Weber, 1937), most of them corresponding to subterranean ants.

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New records of araneid spiders (Araneae: Araneidae) in the Colombian Amazon Region

Zootaxa ◽

10.11646/zootaxa.2626.1.2 ◽

2010 ◽

Vol 2626 (1) ◽

pp. 46 ◽

Cited By ~ 1

Author(s):

JAIME PINZON ◽

LIGIA BENAVIDES ◽

ALEXANDER SABOGAL

Keyword(s):

South America ◽

Geographic Distribution ◽

New Records ◽

Distribution Patterns ◽

Amazon Region ◽

Museum Collections ◽

Geographic Position ◽

New Information ◽

Colombian Amazon ◽

First Time

We have revised all the specimens of Araneidae from the Colombian Amazon Region in the Arachnological Collection of the Instituto de Ciencias Naturales at the Universidad Nacional de Colombia (ICN), in addition to the specimens collected between 2000 and 2004 by the authors in the lower Caquetá and Apaporis rivers (Amazonas and Vaupés, Colombia). A total of 77 new records for Araneidae in the Colombian Amazon are reported; 26 of these species are new records for the country and the region in addition to 15 more species known for Colombia but newly recorded in the region, the distribution of the remaining 36 species is expanded within the region. The genera Encyosaccus Simon 1865 (E. sexmaculatus Simon 1895), Hingstepeira Levi 1995 (H. folisecens Hingston 1932) and Micrepeira Schenkel 1953 (M. fowleri Levi 1995 and M. tubulofasciens Hingston 1932) are recorded for the first time in Colombia. From this revision, it is evident the great amount of new information available in museum collections. Due to the strategic geographic position of Colombia, species inventories in different localities of the Colombian Amazon Region are important to fill distributional gaps of many species in South America. This work contributes to the knowledge of geographic distribution patterns of orb-weaving species in Colombia and in the entire Amazon Region.

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Pollen atlas of useful and cultivated plants in the Colombian Amazon region

Review of Palaeobotany and Palynology ◽

10.1016/s0034-6667(98)00057-8 ◽

1998 ◽

Vol 100 (1-2) ◽

pp. 123-124

Author(s):

Henry Hooghiemstra

Keyword(s):

Amazon Region ◽

Cultivated Plants ◽

Colombian Amazon

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First confirmed record of the LaVal’s Disk-winged Bat, Thyroptera lavali Pine, 1993 (Chiroptera, Thyropteridae), from Colombia

Check List ◽

10.15560/17.2.471 ◽

2021 ◽

Vol 17 (2) ◽

pp. 471-478

Author(s):

Darwin M. Morales-Martínez ◽

Miguel E. Rodríguez-Posada ◽

Sara G. Acosta-Morales ◽

Ana M. Saldarriaga

Keyword(s):

First Record ◽

Amazon Region ◽

Colombian Amazon

We document the first record of Laval’s Disk-winged Bat, Thyroptera lavali Pine, 1993, from the Amazon region of Colombia. This record increases to four the number of Thyroptera species in the country and extends the known range of T. lavali 428 km east and 338 km north from the nearest previous localities. The distribution of this species now comprises 11 localities from six ecoregions and five countries: Brazil, Colombia, Ecuador, Peru, and Venezuela. We highlight the paucity of knowledge on bat species in the Colombian Amazon.

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Lagochilascaris minor IN A PATIENT FROM THE COLOMBIAN AMAZON: A CASE REPORT

Revista do Instituto de Medicina Tropical de São Paulo ◽

10.1590/s0036-46651998000600009 ◽

1998 ◽

Vol 40 (6) ◽

pp. 387-389 ◽

Cited By ~ 5

Author(s):

Ligia I. MONCADA ◽

Carlos A. ALVAREZ ◽

Carlos CASTELLANOS ◽

Elvia CACERES ◽

Santiago NICHOLLS ◽

...

Keyword(s):

Case Report ◽

Chronic Infection ◽

Amazon Region ◽

The Third ◽

Colombian Amazon

A chronic infection (10 years) by Lagochilascaris minor is described in a woman from the amazon region of Colombia. This is the third case of infection by this parasite that has been described so far in Colombia, and only the first one in a person coming from the Colombian Amazon region.

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Soil Quality Restoration during the Natural Succession of Abandoned Cattle Pastures in Deforested Landscapes in the Colombian Amazon

Agronomy ◽

10.3390/agronomy11122484 ◽

2021 ◽

Vol 11 (12) ◽

pp. 2484

Author(s):

Carlos H. Rodríguez-León ◽

Clara P. Peña-Venegas ◽

Armando Sterling ◽

Daniel Castro ◽

Lizeth K. Mahecha-Virguez ◽

...

Keyword(s):

Soil Quality ◽

Negative Impact ◽

Amazon Region ◽

Soil Macrofauna ◽

Natural Succession ◽

Soil Variables ◽

Physico Chemical ◽

Successional Stages ◽

Colombian Amazon ◽

The Individual

Successional processes in abandoned pastures in the Amazon region have been well-documented for the floristic component; however, soil succession has been poorly studied. This study assessed the physical, chemical and biological responses of soils in the Amazon region during the natural succession process in two main landscapes of the Colombian Amazon. Soil data on soil physico–chemical (bulk density, macroaggregates, pH and minerals) and biological (soil macrofauna) composition were evaluated along chronosequence with four successional stages: (i) degraded pastures, (ii) young (10–20-year-old), (iii) middle-age (25–40-year-old) and (iv) mature forests, in two different landscapes (hill and mountain). Individual soil variables and a synthetic indicator of soil quality (GISQ) were evaluated as tools for natural succession monitoring. The results corroborated the negative impact that cattle ranching has on Amazon soils. After 10 years of natural succession, the physico–chemical and biological soil components were widely restored. Less soil compaction and organic carbon occurred in older successional stages. Soil macrofauna richness and density increased along the chronosequence, with an evident association between the macrofauna composition and the macroaggregates in the soil. None of the individual soil properties or the GISQ indicator discriminated among natural succession stages; therefore, new soil quality indicators should be developed to monitor soil quality restoration in natural successions.

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