Oswaldo Jadán

Oswaldo Jadán
King Juan Carlos University | URJC

Magister
Forest Ecology in Andean forests.

About

30
Publications
38,721
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354
Citations
Introduction
Oswaldo Jadán currently works at the Escuela de Ingeniería Agronómica, University of Cuenca. Oswaldo does research in Forestry and Environmental Science. Their current project is 'Diversidad florística, estructura y comunidades forestales en bosques andinos de la provincia del Azuay'.
Additional affiliations
September 2014 - December 2014
University of Cuenca
Position
  • Professor (Assistant)
September 2014 - December 2015
University of Cuenca
Position
  • Professor (Assistant)
September 2014 - December 2016
University of Cuenca
Position
  • Professor (Assistant)

Publications

Publications (30)
Article
Full-text available
Composition, diversity, and structure of trees in tropical montane forests are responsive to ecological gradients and local succession. Those parameters are a result of ecological interactions between vegetation, environment, and location. This study identified floristic groups on mainly secondary forests and evaluated how the composition, diversit...
Article
Full-text available
Our knowledge about the structure and function of Andean forests at regional scales remains limited. Current initiatives to study forests over continental or global scales still have important geographical gaps, particularly in regions such as the tropical and subtropical Andes. In this study, we assessed patterns of structure and tree species dive...
Article
Full-text available
Andean forests and paramo have high species richness, but constantly they are threatened by deforestation. Natural arboreal regeneration of these ecosystems will condition their structure and functionality in the future, but now it has been poorly evaluated. In the Andes of Southern Ecuador, there are also abandoned Pinus patula (pine) forest plant...
Article
Full-text available
Andean forests and paramo have high species richness, but constantly they are threatened by deforestation. Natural arboreal regeneration of these ecosystems will condition their structure and functionality in the future, but now it has been poorly evaluated. In the Andes of Southern Ecuador, there are also abandoned Pinus patula (pine) forest plant...
Article
Full-text available
In Fig. 2 of this Article, the positive part of the y axis scale should read 0, 0.02, 0.04 instead of 0, 0.04, 0.02. This has been corrected online.
Article
Full-text available
Global warming is forcing many species to shift their distributions upward, causing consequent changes in the compositions of species that occur at specific locations. This prediction remains largely untested for tropical trees. Here we show, using a database of nearly 200 Andean forest plot inventories spread across more than 33.5° latitude (from...
Article
Full-text available
El bosque semi-caducifolio ha provisto Productos Forestales no Maderables (PFNM) a sus poblaciones aledañas históricamente. No obstante, información sobre el uso de sus recursos florísticos es escasa. Se determinó el Valor de Uso por Categoría de uso; el Valor de Uso total por especie, y por especie disgregada por sexo y grupo etario. Para los piso...
Article
Full-text available
Forest plantations in Loja basin often have poor silvicultural management and a scarce or no financial valuation of their standing production. Therefore, the objective of study was to evaluate the quality of a pine plantation and to know its real standing value, according to the quality of wood that can be used in a 5-hectare plantation located in...
Article
Full-text available
Tropical forests have high floristic richness and complex structures that, based on their functionality, provide ecosystem services. The richness of arboreal, shrub and herbaceous species and the carbon stored in three altitudinal floors were evaluated: Mountain foot, Montano under and Montano. Variable area plots were installed where the floristic...
Article
Full-text available
In the Southern Andes of Ecuador, there are areas of importance for the conservation of biodiversity such as Inkapirka area. The objectives were to identify landscape units, plant communities and floristic diversity. Landscape units were identified through landscape elements and their interactions between biotic, abiotic and human intervention. Pla...
Article
Full-text available
In the Andean mountains of southern Ecuador there are areas occupied by high Andean secondary forests as a consequence of anthropic activities. Here we identify different secondary forest communities located above 2900 m a.s.l, based on its floristic similarity. In each community, floristic composition was described by the total exclusive and share...
Article
Full-text available
The high Andean secondary forests have been poorly studied floristically in southern Ecuador. They have great attributes in diversity and vegetation structure. This study evaluated parameters richness, diversity and vegetation structure in two altitude belts and their relationships with uses of vegetation. Were installed 20 plots located in two alt...
Article
Full-text available
Deforestation has historically been an evolution linked to many factors, including topographic. However, these factors are not considered for the analysis of deforestation that allows implicitly know the geographical scenarios linked to the change of use. In the present study, deforestation in two time periods and its relationship with altitude and...
Article
Full-text available
The diversity, horizontal and vertical structure of tree and shrub vegetation in traditional cocoa plantations and primary forest were characterized. The alpha and beta diversity were evaluated and the relationships between richness with the structure of the arboreal vegetation were identified. The forest recorded the highest values in species rich...
Article
Full-text available
Cocoa production in the Ecuadorian Amazon is an important source of income for the local population. There is a wide variety of cocoa production systems, from enriched primary forests to traditional agroforestry systems and monoculture. This study assesses the relationship between tree diversity, carbon stocks, agricultural productivity and forest...
Article
Full-text available
En este estudio se evaluó un sistema de bosque y tres sistemas agroforestales SAFs, tradicionales denominados localmente "chakras" con cultivo de cacao propagado sexual y asexualmente dentro de cuatro sistemas de uso de la tierra: 1) bosque primario, 2) chakra con cacao por semilla; 3) chakra con cacao injerto y 4) chakra sin cultivo comercial, en...
Article
Full-text available
In this study a system of forest and three SAFs traditional locally called “chakras” were evaluated in cocoa farming spread sexually and asexually in four land use systems: 1) primary forest, 2) chakra cocoa farmed by seed; 3) chakra with cocoa graft, and 4) chakra without cash crop in Sumaco Biosphere Reserve, Ecuador. Variables were analyzed for...
Chapter
Full-text available
This chapter presents the contribution of “chakra,” a traditional agroforestry system, to climate change adaptation and biodiversity conservation in Ecuador’s Amazonian communities. IPCC’s methodology was used for the estimation of carbon sequestration in soil, biomass, and cacao plantations. Carbon levels in multiple systems of land use were measu...
Article
Full-text available
The soil-transmitted In Ecuador to assess the potential of ecosystem services in relation to carbon stored by quantifying biomass in forest ecosystems, there have been many efforts applied research to improve assessment methods. This research made in the stratum evergreen forest of lowland of Amazonía. The aim was to determine the aerial biomass an...
Article
Full-text available
En el Ecuador, para evaluar la potencialidad de los servicios ecosistémicos respecto al carbono almacenado mediante la cuantificación de la biomasa en los ecosistemas forestales, se han realizado muchos esfuerzos de investigación aplicada, que permitan mejorar los métodos de evaluación. La presente investigación se realizó en el estrato Bosque siem...
Conference Paper
Full-text available
Pocas investigaciones se han realizado para examinar diferencias entre el bosque y sistemas productivos tradicionales con base tanto para la mitigación del cambio climático, como para la conservación de la biodiversidad a través del fomento de corredores productivos entre los fragmentos de bosque en ecosistemas amazónicos. La presente investigación...
Chapter
Full-text available
El Estado en su afán de mejorar la planificación y ordenamiento del territorio, así como de proveer información oficial para el uso de actores internos y externos, que trabajan en el sector ambiental en nuestro país; ha generado por primera vez el Mapa de Ecosistemas del Ecuador, el mismo que constituye una herramienta fundamental y de carácter ofi...
Article
Full-text available
A pesar de la creciente evidencia del efecto de los sistemas productivos tradicionales sobre el secuestro y almacenamiento de carbono, pocas investigaciones se han realizado para examinar esta relación entre el bosque y sistemas productivos tradicionales con base a la mitigación al cambio climático, especialmente en ecosistemas amazónicos. La prese...
Thesis
Full-text available
The research was conducted in Sumaco Biosphere Reserve in the province of Napo, Republic of Ecuador. We studied seven systems of land use: Chakras with and without shade, cocoa crops propagated by seed with and without shade, cacao grafted with and without shade and primary forest. We evaluated three response variables: tree and shrub diversity, st...
Article
Full-text available
The Royal Sunangel (Heliangelus regalis) is endemic to sandstone ridges in southeast Ecuador and northeast Peru. This hummingbird is currently considered endangered, although little has been published on its natural history, distribution, and conservation. We found H. regalis in three habitat types, but abundance was higher in stunted shrubland, at...
Technical Report
Full-text available
El folleto “LA MAGIA DE LOS TEPUYES DEL NANGARITZA: una guía para conocer a sus habitantes” fue financiado por Conservación Internacional Ecuador y el Programa de Evaluaciones Rápidas (RAP) de Conservation International. Este documento se basó en información proveniente del estudio Tepuyes de la Cuenca Alta del Río Nangaritza RAP 2009, Cordillera d...
Article
Full-text available
Se presenta un análisis sobre el estado del conocimiento de la familia Cactaceae en el Ecuador. De acuerdo con la información actual, en el Ecuador continental habitan 43 especies de cactus, pertenecientes a 16 géneros. Cuatro géneros de cactáceas se encuentran representados por más de cuatro especies. Entre los más diversos sobresalen: Armatocereu...

Questions

Questions (3)
Question
Dear colleagues
It has been published on functional traits that are related to carbon storage in tropical forests. I need to know about, which functional traits of tropical forest species are related to the regulation of water in a river basin and how they are measured?. Thank you

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