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https://purl.org/pe-repo/ocde/ford#4.01.02
192
Perú
164
Peru
132
endemism
113
endemismo
111
endemic plants
108
plantas endémicas
108
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1
artículo
Publicado 2011
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The consumer must also be clearly aware that today the purchase of reams of white paper implies the felling of trees, consequently, an attitude of "sustainable consumption" according to the preferred definition for the term proposed at the Oslo Symposium in 1994 and adopted by the third session of the United Nations Commission for Sustainable Development (CSD III) in 1995, where it was defined as: "The use of goods and services that respond to basic needs and provide a better quality of life, at the same time that minimize the use of natural resources, toxic materials, and emissions of waste and pollutants over the life cycle, in such a way that the needs of future generations are not jeopardized", a definition that is also connected with the most common internationally. of "sustainable development" which is used by the Brundtland Commission: "Sustainable development is that development ...
2
artículo
Publicado 2016
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Amazonian várzea forests are characterized by a high diversity of species and adaptations against extended flooding. Waterlogging and submergence can last up to 210 days per year, with a water column of up to 6-7 m. The present paper gives an insight into the current knowledge of morpho-anatomical, phenological and physiological responses to flooding in várzea trees, into patterns of regeneration and seedling recruitment, and into differences found along the flooding gradient, and between populations of selected species. This knowledge may serve as a basic tool for forest management. The high selective logging already caused a substitution of timber species, with high damages in the remaining stands, calling for rigorous management plans. Since the regular inundation induces the formation of annual rings, and tree growth responds to the prolonged vegetation period with signifi...
3
artículo
Publicado 2021
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The Amazonian forests of Peru are among the most diverse and disturbed by anthropic activities on the planet, today there are still gaps on the composition of the communities and their inter-specific relationships. A forest inventory was carried out in a terraced forest in the Madre de Dios region, 5 blocks were established with 2 rectangular plots of 20m x 500m each to identify and measure individuals with diameter greater than 10 cm. 4429 trees were evaluated and 254 species, 165 genera and 53 families were identified. The distribution of diameter classes and height presents typical patterns of intervened forests, in this case by the extraction of wood decades ago. The average of the biodiversity indices are: Shannon-Wienner 4.039 ± 0.16 and α-Fisher 39.90 ± 9.23, indicating that there is a high diversity of species. The species of greatest ecological importance were: Tetragastris a...
4
artículo
Publicado 2017
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This article presents the application of the non-parametric Random Forest method through supervised learning, as an extension of classification trees. The Random Forest algorithm arises as the grouping of several classification trees. Basically it randomly selects a number of variables with which each individual tree is constructed and predictions are made with these variables that will later be weighted through the calculation of the most voted class of these trees that were generated, to finally do the prediction by Random Forest. For the application, we worked with 3168 recorded voices, for which the results of an acoustic analysis are presented, registering variables such as frequency, spectrum, modulation, among others, seeking to obtain a pattern of identification and classification according to gender through a voice identifier. The data record used is in open access and can be do...
5
artículo
Publicado 2017
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This article presents the application of the non-parametric Random Forest method through supervised learning, as an extension of classification trees. The Random Forest algorithm arises as the grouping of several classification trees. Basically it randomly selects a number of variables with which each individual tree is constructed and predictions are made with these variables that will later be weighted through the calculation of the most voted class of these trees that were generated, to finally do the prediction by Random Forest. For the application, we worked with 3168 recorded voices, for which the results of an acoustic analysis are presented, registering variables such as frequency, spectrum, modulation, among others, seeking to obtain a pattern of identification and classification according to gender through a voice identifier. The data record used is in open access and can be do...
6
artículo
Publicado 2021
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The Amazonian forests of Peru are among the most diverse and disturbed by anthropic activities on the planet, today there are still gaps on the composition of the communities and their inter-specific relationships. A forest inventory was carried out in a terraced forest in the Madre de Dios region, 5 blocks were established with 2 rectangular plots of 20m x 500m each to identify and measure individuals with diameter greater than 10 cm. 4429 trees were evaluated and 254 species, 165 genera and 53 families were identified. The distribution of diameter classes and height presents typical patterns of intervened forests, in this case by the extraction of wood decades ago. The average of the biodiversity indices are: Shannon-Wienner 4.039 ± 0.16 and α-Fisher 39.90 ± 9.23, indicating that there is a high diversity of species. The species of greatest ecological importance were: Tetragastris a...
7
artículo
Publicado 2021
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The Amazonian forests of Peru are among the most diverse and disturbed by anthropic activities on the planet, today there are still gaps on the composition of the communities and their inter-specific relationships. A forest inventory was carried out in a terraced forest in the Madre de Dios region, 5 blocks were established with 2 rectangular plots of 20m x 500m each to identify and measure individuals with diameter greater than 10 cm. 4429 trees were evaluated and 254 species, 165 genera and 53 families were identified. The distribution of diameter classes and height presents typical patterns of intervened forests, in this case by the extraction of wood decades ago. The average of the biodiversity indices are: Shannon-Wienner 4.039 ± 0.16 and α-Fisher 39.90 ± 9.23, indicating that there is a high diversity of species. The species of greatest ecological importance were: Tetragastris a...
8
artículo
Publicado 2020
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The evergreen piedmont forests of the Biological Station Pindo Mirador, province of Pastaza, Ecuador, have been poorly studied, proposing with the research, to characterize the tree structure of the secondary piedmont evergreen forest in a sector of the forest area of the Station, providing information for the protection actions that are developed. Four plots of 0,1 ha were established covering a sampling area of 0,4 ha; all trees with D1.30 from the soil ≥ 10 cm were measured, determining their absolute height, and four diametric classes and similar number of height ranges were established with the records. Species and plot abundances, diametric classes and height ranges were analyzed to extract their descriptive statistics, and by non-parametric comparisons to establish differences between them. The contribution of species to the forest structure was assessed by determining Structura...
9
tesis de maestría
Publicado 2020
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El incremento de la deforestación en la Amazonía y sus impactos en los servicios ecosistémicos convierten a la restauración ecológica en una necesidad para garantizar la sobrevivencia de este bioma. En ese sentido, esta tesis estudió los factores que promueven el reclutamiento de árboles en la restauración de bosques. El estudio fue realizado durante la época seca de 2019 en 86 parcelas dispuestas en 6 minas cerradas, constituyendo una crono-secuencia de 27 años de áreas en proceso de restauración. Estas parcelas estuvieron ubicadas en la Amazonía del estado de Rondônia en Brasil. Se midieron diferentes factores asociados al manejo forestal y la dinámica ecológica, así como variables asociadas a los reclutas. Con los datos obtenidos se elaboraron modelos lineales mixtos en R para analizar el efecto de dichos factores en la riqueza de especies, composición específica y ...
10
artículo
Publicado 2020
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The evergreen piedmont forests of the Biological Station Pindo Mirador, province of Pastaza, Ecuador, have been poorly studied, proposing with the research, to characterize the tree structure of the secondary piedmont evergreen forest in a sector of the forest area of the Station, providing information for the protection actions that are developed. Four plots of 0,1 ha were established covering a sampling area of 0,4 ha; all trees with D1.30 from the soil ≥ 10 cm were measured, determining their absolute height, and four diametric classes and similar number of height ranges were established with the records. Species and plot abundances, diametric classes and height ranges were analyzed to extract their descriptive statistics, and by non-parametric comparisons to establish differences between them. The contribution of species to the forest structure was assessed by determining Structura...
11
artículo
Publicado 2022
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Biosphere Reserves are considered learning spaces for sustainable development; in this sense, the objective was to measure sustainable development in the Oxapampa-Asháninka-Yánesha Biosphere Reserve during its first five-year recognition by UNESCO; for this, five districts integrated in the area of the biosphere reserve have been defined as the unit of analysis (Chontabamba, Huancabamba, Oxapampa, Pozuzo and Villa Rica). Based on 111 indicators proposed by the UN and the SDGs, 39 strategic indicators were defined, which were standardized using the Z-score and successively the data grouping by the principal components analysis technique (PCA); for which 12 new instruments have been generated, assigning new labels. The Z-score of the current indicator is converted with the standard normal percentile method with a theoretical value between 0 and 100; to obtain the annual sub-indices (soci...
12
artículo
Publicado 2021
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In this paper, we assess the drivers of office rental prices in the municipality of Madrid with a sample of 4,721 offices in March, 2020. The estimation was performed using the decision tree approach, which was built with a random forest algorithm. This technique allows us to capture the strong nonlinear component in the relation between price and its drivers, mainly geospatial location. Through a stratified analysis, we find out that the willingness to pay high rent in the center of Madrid is a feature of particular relevance to medium-sized offices. For diferent reasons, we also find out some office clusters located far from the city center with high rent for both large and small offices.
13
artículo
Publicado 2021
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In this paper, we assess the drivers of office rental prices in the municipality of Madrid with a sample of 4,721 offices in March, 2020. The estimation was performed using the decision tree approach, which was built with a random forest algorithm. This technique allows us to capture the strong nonlinear component in the relation between price and its drivers, mainly geospatial location. Through a stratified analysis, we find out that the willingness to pay high rent in the center of Madrid is a feature of particular relevance to medium-sized offices. For diferent reasons, we also find out some office clusters located far from the city center with high rent for both large and small offices.
14
artículo
Palm trees are important resources for many species of animals, which when consumed the fruits promote the movement of the seeds. Palm trees of the genus Attalea and Astrocaryum are often abundant in forest fragments. However, little is known about animals that consume their fruits. The objective of this work was to identify the animals that consume fruits of Attalea maripa and Astrocaryum aculeatum. The study was carried out in the forest fragment of (UFAM), in Manaus, Brazil. The observations were made from July to September / 2018 with the help of binoculars, camera traps and photographic. The camera traps were installed in an A. aculeatum tree and eight A. maripa trees for 24 hours. In general, 11 species of animals (primates, rodents, marsupials and birds) feeding on the fruits. The seeds were consumed near the mother trees. No predated seeds were found. The mammals corresponded to ...
15
artículo
Publicado 2021
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1. Forest landscape restoration (FLR) has gained momentum globally and guidance is needed to identify those species, sites and planting methods that increase restoration success. Incorporating native Non-Timber Forest Product (NTFP) species in FLR approaches provides an opportunity to simultaneously deliver ecological and economic benefits. The Brazil nut tree is one of the most valuable Amazonian NTFP species and could fulfil a cornerstone role in Amazon FLR. However, the factors defining establishment success within Brazil nut restoration activities remain unknown. 2. Here, we evaluate the effect of management practices, restoration site (pastures, agroforestry, secondary forest and canopy gaps in old growth forest) and environmental conditions on the establishment success (tree growth, survival and fruit production) of Brazil nut restoration projects implemented by smallholders in the...
16
informe técnico
Publicado 2018
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Western Amazonia is known to harbour some of Earth's most diverse forests, but previous floristic analyses have excluded peatland forests which are extensive in northern Peru and are among the most environmentally extreme ecosystems in the lowland tropics. Understanding patterns of tree species diversity in these ecosystems is important both for quantifying beta‐diversity in this region, and for understanding determinants of diversity more generally in tropical forests. Here we explore patterns of tree diversity and composition in two peatland forest types – palm swamps and peatland pole forests – using 26 forest plots distributed over a large area of northern Peru. We place our results in a regional context by making comparisons with three other major forest types: terra firme forests (29 plots), white‐sand forests (23 plots) and seasonally‐flooded forests (11 plots). Peatland...
17
artículo
Publicado 2021
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La bolaina blanca (Guazuma crinita Mart, Meliaceae) es una de las especies más importantes de la región Ucayali por su rápido crecimiento y creciente valor en el mercado, convirtiéndola en una especie competitiva al momento de elegir especies para un programa de producción de bienes y servicios sostenible, por ello la determinación de la cantidad de biomasa cumple un papel clave para este fin; en este contexto, fueron evaluados 38 árboles de G. crinita de 31 meses de edad, con diámetro promedio a la atura de la base de 13,33 cm, con un valor máximo y mínimo de 17,4 y 10,2 cm, respectivamente, con desviación estándar de 1,80 cm y un coeficiente de variabilidad de 13%, para una biomasa total promedio de 28,76 Kg, con una desviación estándar de 10,07 y un coeficiente de variabilidad del 35%; se determinó que en la cuenca del río Aguaytia existe una alta relación entre la va...
18
artículo
Publicado 2010
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One plot of 1 ha, was established in the terra firm forest in the Pongo de Qoñec, Kosñipata valley (Cusco), inside the reserve Biósfera of the Manú, to 710 m; 12°53'53"S and 72°22'25"W. We registered, 56 families, 153 genus, 249 species, with 813 individuals with Dap ≥ 10 cm. Families, more rich were: Fabaceae (32 species), Moraceae (24), Rubiaceae (17) and Lauraceae (12); The most rich genus were, Inga (17), Neea (7), Miconia (5); the total basal area was 40.50 m2, of them Iriartea deltoidea with 6.58 m2, Socratea salazarii 2.28 m2, and Endlicheria sp 1.65 m2, obtained bigger ab; The specie with most high value of importance went: I deltoidea, corroborating previous studies in the terra firm forests. The structural analysis evidences than diametrics class of 10-20 cm, was 71.3 % of the total of individuals. When comparing our results, the Pongo Qoñec, surprisingly obtained high...
19
artículo
Publicado 2021
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This research was supported by the Project Concytec – Banco Mundial, through its executing unit is the Fondo Nacional de Desarrollo Científico, Tecnológico y de Innovación Tecnológica (FONDECYT) (Project No. 043-2019-FONDECYT- BMINC.INV). A special thanks to the entire team of the research project “MaderApp: Un aplicativo móvil para el reconocimiento automático y en tiempo real de especies maderables comerciales para combatir la tala ilegal en Selva Central, Perú”.
20
artículo
Publicado 2021
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The white ball (Guazuma crinita Mart, Meliaceae) as one of the most important species in the Ucayali region due to its rapid growth and increasing market value, makes it a competitive species when choosing species for a program of production of goods and sustainable services, therefore determining the amount of biomass plays a key role for this purpose; In this purpose, the 38 trees of G. crinita at 31 months of age, with an average diameter at the height of the base of 13.33 cm, with a maximum and minimum value of 17.4 and 10.2 cm, respectively, with a standard deviation of 1.80 cm and a variability coefficient of 13%, for an average total biomass of 28.76 Kg, with a standard deviation of 10.07 and a variability coefficient of 35%; It was determined that there is a high relationship between the independent variable diameter at the height of the base (dab) and the total aerial biomass of...
