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1
tesis de maestría
Publicado 2020
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Gold extraction via small scale mining in the Amazon rainforest of Peru has become one of the greatest threats to deforestation and land degradation in the Amazon, especially in the Madre de Dios region which is one of the last biggest remnants of continuous tropical rainforest in the world. Restoration of these degraded ecosystems have become a priority in the last decade but without concrete actions, however, few research has been conducted in response to these restoration activities nor natural regeneration. The significance of this research was to 1) To Analyze how gold mining affects forest structure, species richness and diversity in the Amazon Rainforest of Madre de Dios, Peru. 2) To assess variation on diversity levels in secondary successional forest compared to that found in primary forest 3) to identify variations in the gold extraction methods reported in the region and how i...
2
artículo
Vascular plants of the headwaters of the Gocta, Chinata and Yumbilla waterfalls, Amazon region, Peru
Publicado 2020
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We present here the diversity of vascular plants from the headwaters of the Gocta, Chinata and Yumbilla Falls, Amazonas region, Peru, 2012. 107 families, 279 genera and 509 species of vascular plants were registered. Pteridophyta presents 19 species in 14 genera and 10 families, Pinophyta, one species; and Magnoliophyta, 489 species in 264 genera and 96 families of this last division; 324 species, 194 genera and 80 families are included in the Magnoliopsida class and 165 species, 70 genera and 16 families are in the Liliopsida class. The Orchidaceae family is the most diverse, with 26 genera and 83 species, followed by the Asteraceae families, with 38 genera and 69 species and Poaceae, with 15 genera and 34 species. The most diverse genera are Epidendrum, with 25 species, followed by Peperomia and Solanum, with 11 species each. 54 species are endemic. The Asteraceae family is the one wit...
3
artículo
Vascular plants of the headwaters of the Gocta, Chinata and Yumbilla waterfalls, Amazon region, Peru
Publicado 2020
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We present here the diversity of vascular plants from the headwaters of the Gocta, Chinata and Yumbilla Falls, Amazonas region, Peru, 2012. 107 families, 279 genera and 509 species of vascular plants were registered. Pteridophyta presents 19 species in 14 genera and 10 families, Pinophyta, one species; and Magnoliophyta, 489 species in 264 genera and 96 families of this last division; 324 species, 194 genera and 80 families are included in the Magnoliopsida class and 165 species, 70 genera and 16 families are in the Liliopsida class. The Orchidaceae family is the most diverse, with 26 genera and 83 species, followed by the Asteraceae families, with 38 genera and 69 species and Poaceae, with 15 genera and 34 species. The most diverse genera are Epidendrum, with 25 species, followed by Peperomia and Solanum, with 11 species each. 54 species are endemic. The Asteraceae family is the one wit...
4
artículo
Publicado 2012
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Ecological surrogates are environmental or biotic proxies for biodiversity quantification. Their application circumvents logistic constraints and taxonomic voids to sample and identify species, and has become an important tool in conservation and management. In this study, we illustrate a surrogate method using multivariate ordinations, and we apply it to tree data from the Chanchamayo montane forest (Andes, Peru).
5
artículo
Publicado 2012
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Ecological surrogates are environmental or biotic proxies for biodiversity quantification. Their application circumvents logistic constraints and taxonomic voids to sample and identify species, and has become an important tool in conservation and management. In this study, we illustrate a surrogate method using multivariate ordinations, and we apply it to tree data from the Chanchamayo montane forest (Andes, Peru).
6
artículo
Publicado 2012
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This paper reviews the different indices used to describe and characterize the horizontal structure or spatial pattern in forest stands, with particular emphasis on those which have been applied to the study of tropical forests. These indices have been classified according to their data-inventory requirements. A number of aspects concerned with the statistical properties of the most commonly employed indices (Fisher and Morisita indices, LQV techniques and SADIE in the quadrats group; Clark-Evans, Pielou and Byth-Ripley in the nearest-neighbour group; The empirical L(d) and O-ring functions in the mapped data group) and their applicability to tropical stands, have been tested in experimental plots located in an Andean tropical forest.
7
artículo
Publicado 2012
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This paper reviews the different indices used to describe and characterize the horizontal structure or spatial pattern in forest stands, with particular emphasis on those which have been applied to the study of tropical forests. These indices have been classified according to their data-inventory requirements. A number of aspects concerned with the statistical properties of the most commonly employed indices (Fisher and Morisita indices, LQV techniques and SADIE in the quadrats group; Clark-Evans, Pielou and Byth-Ripley in the nearest-neighbour group; The empirical L(d) and O-ring functions in the mapped data group) and their applicability to tropical stands, have been tested in experimental plots located in an Andean tropical forest.
8
artículo
Publicado 2005
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The forest fragments or relict forests on the Western slopes of the Andes in northwest Peru and in south-west Ecuador are fragile ecosystems, which were largely continuous at some stage in the past. The importance and uniqueness of these forests as «refuges» and stable habitats roots partly in their complex diversity and their high levels of endemicity. These in turn are the outcome of a complex topography and ecology. In this introductory chapter 12 studies are analysed, which were presented at the Taller sobre Bosques Relictos de la Vertiente Occidental Andina del Norte del Perú y Sur del Ecuador in May 2004 at the X CONABOT, Trujillo-Perú. This helps to consolidate and update our knowledge on these over 20 forests fragments in northern Peru and two previously unknown fragments are presented for the first time: Bosque La Oscurana (Cajamarca) and Kañaris (Lambayeque). Some ideas ar...
9
artículo
Publicado 2005
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The forest fragments or relict forests on the Western slopes of the Andes in northwest Peru and in south-west Ecuador are fragile ecosystems, which were largely continuous at some stage in the past. The importance and uniqueness of these forests as «refuges» and stable habitats roots partly in their complex diversity and their high levels of endemicity. These in turn are the outcome of a complex topography and ecology. In this introductory chapter 12 studies are analysed, which were presented at the Taller sobre Bosques Relictos de la Vertiente Occidental Andina del Norte del Perú y Sur del Ecuador in May 2004 at the X CONABOT, Trujillo-Perú. This helps to consolidate and update our knowledge on these over 20 forests fragments in northern Peru and two previously unknown fragments are presented for the first time: Bosque La Oscurana (Cajamarca) and Kañaris (Lambayeque). Some ideas ar...
10
artículo
Publicado 2005
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In Kañaris (Lambayeque Department) there are enormous relic forests, probably the largest relic forests on the western slope of the Andes in Peru. They are very well preserved, but at the same time botanically virtually unexplored. These forests are found at elevations of 1500-3000 m in the highlands of Upaypiteq and the adjacent areas in the Cordillera Occidental on the atlantic slope [Shin Shin, San Lorenzo, Huacapampa, Pandachí, Gramalote, Walte, Mollepampa in the district of Kañaris (2300 m)] and on the Pacific slope [Chiñama and Luto]. The current study was undertaken with the aim of studying these forests with botanical sampling, and the life and structures of the components of the forests of Upaypiteq. The botanical specimens are the basis for progress and the pricipical forest components of the cloud forest are determined as members of: Lauraceae (Persea, Ocotea, Nectandra), ...
11
artículo
Publicado 2015
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The tropical Andes and adjacent Amazon are Earth’s highest biodiversity hotspot. Manu National Park in southeastern Peru encompasses an entire watershed, ranging from Andean highlands to Amazonian lowlands, and is a megadiverse landscape on the Andes to Amazon transition. Here we present an annotated checklist of trees and related species is along an elevation gradient in the Manu Biosphere Reserve that runs from sub-montane forests at 800 m elevation up to the tree line at 3625 m. Based on a network of 21 1-hectare permanent tree plots and botanical explorations, the floristic information is systematized by elevation ranges, geographical distribution and endemism. These preliminary results show 1108 species. Of these, 43% are new records for the region of Cusco, 15 species are new records for the Peruvian flora, 40 species are endemics for Peru, and 30 are potential new species for sc...
12
artículo
Publicado 2005
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In Kañaris (Lambayeque Department) there are enormous relic forests, probably the largest relic forests on the western slope of the Andes in Peru. They are very well preserved, but at the same time botanically virtually unexplored. These forests are found at elevations of 1500-3000 m in the highlands of Upaypiteq and the adjacent areas in the Cordillera Occidental on the atlantic slope [Shin Shin, San Lorenzo, Huacapampa, Pandachí, Gramalote, Walte, Mollepampa in the district of Kañaris (2300 m)] and on the Pacific slope [Chiñama and Luto]. The current study was undertaken with the aim of studying these forests with botanical sampling, and the life and structures of the components of the forests of Upaypiteq. The botanical specimens are the basis for progress and the pricipical forest components of the cloud forest are determined as members of: Lauraceae (Persea, Ocotea, Nectandra), ...
13
artículo
Publicado 2015
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Los Andes están considerados como los puntos calientes más diversos de los trópicos, dentro de estos se encuentra el Parque Nacional del Manu, cuyas complejas condiciones climáticas y fisiográficas albergan una mega-diversidad y endemismo. En el presente trabajo se presenta una lista anotada de especies arbóreas y afines a lo largo de un gradiente de elevación desde los bosques submontanos a 800 m hasta la línea de bosque a 3625 m en la Reserva de Biosfera del Manu. En base a una red de 21 parcelas permanentes de una hectárea y exploraciones botánicas se sistematiza la información florística por rangos de elevación, distribución geográfica y endemismo. Estos resultados preliminares se traducen en 1108 especies de las cuales el 39.7% son morfoespecies, el 43% de las especies determinadas son registros nuevos para la región del Cusco, 15 especies son nuevos registros para l...
14
artículo
Publicado 2021
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This work was supported by the Consejo Nacional de Ciencia, Tecnolog?a e Innovaci?n Tecnol?gica (PE) [015-2019- FONDECYT-BM]; FONDECYT-CONCYTEC [N? 237-2015-FONDECYT].
15
tesis de maestría
Publicado 2025
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This study evaluated risk factors associated with asymptomatic malaria among adults in communities near Iquitos: Zungarococha, Puerto Almendra, Ninarumi, and Llanchama. The sample consisted of 412 adults enrolled in a previous study conducted in 2017. The techniques used were a database review and standardized PCR and ELISA tests, and the instruments were a data collection form and a results processing form. The study found a prevalence of 10.2% of asymptomatic malaria, 4 times (16.5%) more cases of malaria were detected by PCR, 64.7% of submicroscopic cases were asymptomatic, and 97.6% of asymptomatic malaria cases were caused by Plasmodium vivax. The sociodemographic factors associated with the risk of asymptomatic malaria were living in Llanchama (OR 3.5, p<0.001, 95% CI 1.776–6.995) and being a laborer (OR 4.2, p=0.021, 95% CI 1.241–14.363). The epidemiological factors associated...
16
tesis de grado
Publicado 2019
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Las actividades humanas están produciendo un exceso de gases de efecto invernadero que están potencialmente calentando el clima de la tierra. En tanto que los ecosistemas forestales están almacenando el Carbono de la atmósfera en la biomasa y el suelo. La siguiente investigación, “Evaluación del incremento volumétrico de cinco especies forestales y su almacenamiento de captura de carbono, Centro de Producción e Investigación Pabloyacu, Moyobamba – 2018”, tuvo como objetivo general la evaluación del incremento volumétrico de cinco especies forestales y su almacenamiento de captura de carbono; Eucalipto torrelliana, Eucalipto saligna, Bolaina, Pino chuncho y Tornillo, especies encontradas, en la plantación forestal perteneciente al Centro de Investigación se desarrolló metodológicamente en dos fases, la fase de campo, que se desarrolló por etapas, la etapa de identifi...
17
artículo
Publicado 2020
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The Regional Government of Cajamarca started in 2014 the recognition process as a regional conservation area of the El Chaupe, Cunia and Chinchiquilla Forests. The objective of this study was to estimate the social benefits and costs for the establishment of the conservation area, which will serve the regional authority to manage its creation. In order to achieve the objective, a contingent valuation study was carried out in order to estimate the economic value of the main services provided by forests, after which, these values were added to infer the social benefits they generate in a scenario of improvements through conservation programs. In addition, the probable costs of the optimal management of the area in which installation and program costs with long-term vision are included were estimated. The investigation concludes that the net social benefits range between 25 and ...
18
artículo
Publicado 2017
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One of the major challenges in ecology is to understand how ecosystems respond to changes in environmental conditions, and how taxonomic and functional diversity mediate these changes. In this study, we use a trait-spectra and individual-based model, to analyse variation in forest primary productivity along a 3.3 km elevation gradient in the Amazon-Andes. The model accurately predicted the magnitude and trends in forest productivity with elevation, with solar radiation and plant functional traits (leaf dry mass per area, leaf nitrogen and phosphorus concentration, and wood density) collectively accounting for productivity variation. Remarkably, explicit representation of temperature variation with elevation was not required to achieve accurate predictions of forest productivity, as trait variation driven by species turnover appears to capture the effect of temperature. Our semi-mechanist...
