Alicia Ledo

Alicia Ledo
Freelance Scientist

PhD

About

37
Publications
21,500
Reads
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1,680
Citations
Additional affiliations
January 2020 - present
Freelance
Position
  • Consultant
May 2016 - March 2019
University of Aberdeen
Position
  • PostDoc Position
January 2013 - May 2013
Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria
Position
  • PostDoc Position

Publications

Publications (37)
Article
Full-text available
There is a growing interest globally in reducing the environmental impacts of farming by reusing agricultural waste and reducing agricultural greenhouse gas (GHG) emissions. In this work, the potential of Mediterranean viticulture for GHG emissions mitigation and Carbon (C) storage in biomass and soil is examined. In a field experiment, synthetic f...
Article
Full-text available
The carbon gain in restored logged forest There is currently great interest in the capacity of global forest to store carbon and hence contribute to the mitigation of climate change in the coming decades. In a study of Southeast Asian tropical forest, Philipson et al. show that active restoration of logged forests generates higher rates of carbon a...
Article
Full-text available
This study evaluates the dynamics of soil organic carbon (SOC) under perennial crops across the globe. It quantifies the effect of change from annual to perennial crops and the subsequent temporal changes in SOC stocks during the perennial crop cycle. It also presents an empirical model to estimate changes in the SOC content under crops as a functi...
Article
Full-text available
Tropical montane forests (TMFs) play an important role as a carbon reservoir at a global scale. However, there is a lack of a comprehensive understanding on the variation in carbon storage across TMF compartments [namely aboveground biomass (AGB), belowground biomass (BGB), and soil organic matter] along altitudinal and environmental gradients and...
Article
Full-text available
Research Highlights: We proposed new methodologies for the spatial analysis of regeneration processes and compared with existing approaches. Background and Objectives: Identifying the spatial relationship between adult trees and new cohorts is fundamental to understanding the dynamics of regeneration and therefore helps us to optimize the stand den...
Article
Full-text available
Key message: Permanent sampling plots (PSPs) are a powerful and reliable methodology to help our understanding of the diversity and dynamics of tropical forests. Based on the current inventory of PSPs in Indonesia, there is high potential to establish a long-term collaborative forest monitoring network. Whilst there are challenges to initiating suc...
Article
Full-text available
Design Type(s) data integration objective • data collection and processing objective • factorial design Measurement Type(s) amount of carbon atom in soil Technology Type(s) digital curation Factor Type(s) climate • Species • experimental condition • age Sample Characteristic(s) Brazil • cultivated environment • Canada • United States of America • N...
Article
Evergreen oak woodlands in the Western Mediterranean exploited as agrosilvopastoral systems have often been considered as a sustainability paradigm. Yet, these ecosystems show profound symptoms of degradation with widespread tree decline and increased mortality, making them a paradigmatic example of overexploited eco- systems threatened by global c...
Article
Reliable quantification of nitrous oxide emission is a key to assessing efficiency of use and environmental impacts of N fertilizers in crop production. In this study, N2O emission and yield were quantified with a database of 853 field measurements in 104 reported studies and a regression model was fitted to the associated environmental attributes...
Article
Process-based models are useful tools to integrate the effects of detailed agricultural practices, soil characteristics, mass balance, and climate change on soil N2O emissions from soil - plant ecosystems, whereas static, seasonal or annual models often exist to estimate cumulative N2O emissions under data-limited conditions. A study was carried ou...
Article
Full-text available
Climate change mitigation and food security are two of the main challenges of human society. Agroforestry systems, defined as the presence of trees on external and internal boundaries, cropland, or on any other available niche of farmland, can provide both climate change mitigation and food. There are several types of agroforestry systems with diff...
Article
Full-text available
13 Climate change mitigation and food security are two of the main challenges of human 14 society. Agroforestry systems, defined as the presence of trees on external and internal 15 boundaries, cropland, or on any other available niche of farmland, can provide both climate 16 change mitigation and food. There are several types of agroforestry syste...
Article
Full-text available
Background Canopy structure, defined by leaf area index (LAI), fractional vegetation cover (FCover) and fraction of absorbed photosynthetically active radiation (fAPAR), regulates a wide range of forest functions and ecosystem services. Spatially consistent field-measurements of canopy structure are however lacking, particularly for the tropics. Me...
Article
Full-text available
Accurate estimation of tree biomass is necessary to provide realistic values of the carbon stored in the terrestrial biosphere. A recognized source of errors in tree above-ground biomass (AGB) estimation is introduced when individual tree height values (H) are not directly measured but estimated from diameter at breast height (DBH) using allometric...
Article
Prediction of carbon dynamics in response to global climate change requires an understanding of the processes that govern the distribution of carbon stocks. Above‐ground biomass ( AGB ) in tropical forests is regulated by variation in soil fertility, climate, species composition and topography at regional scales, but the drivers of fine‐scale varia...
Article
Full-text available
Detailed information about interspecific spatial associations among tropical tree species is scarce, and hence the ecological importance of those associations may have been underestimated. However, they can play a role in community assembly and species diversity maintenance. This study investigated the spatial dependence between pairs of species. F...
Article
Full-text available
Context The establishment of seedlings after regeneration fellings is key to guaranteeing the development and persistence of the forest. Depending on the objective pursued, data available or type of forest, a number of different methods have been employed to assess the relationship between seedling establishment and both environmental and stand fac...
Article
Full-text available
Inventorying field mapped plots can be difficult in tropical forest because visibility and access are limited due to high density of woody plants. Additionally, steep slopes and frequent presence of fog further complicate field measurements in mountain areas. The objective of this study was to propose a detailed field census protocol. The method de...
Article
QuestionWhat are the conditions necessary for the establishment and development of seedlings and an early stage sapling community in an old-growth cloud forest? Cloud forests are one of the most threatened ecosystems in the world; however, recruitment patterns in these forests remain largely unknown.LocationCloud Forest, Northern Peruvian Andes.Met...
Article
Full-text available
Negative density dependence (NDD) and habitat specialization have received strong empirical support as mechanisms that explain tree species diversity maintenance and distribution in tropical forests. In contrast, disturbance appears to play only a minor role. Previous studies have rarely examined the relative strengths of these diversity maintenanc...
Article
Full-text available
Las funciones de segundo orden son cada vez más empleadas en el análisis de procesos ecológicos. En este trabajo presentamos dos funciones de segundo orden desarrolladas recientemente que permiten analizar la interacción espacio-temporal entre dos especies o tipos funcionales de individuos. Estas funciones han sido desarrolladas para el estudio de...
Article
QuestionsSpecies–habitat associations may contribute to the maintenance of species richness in tropical forests, but previous research has been conducted almost exclusively in lowland forests and has emphasized the importance of topography and edaphic conditions. Is the distribution of woody plant species in a Peruvian cloud forest determined by mi...
Article
Full-text available
Lianas are a key component of tropical forests; however, most surveys are too small to accurately quantify liana community composition, diversity, abundance, and spatial distribution - critical components for measuring the contribution of lianas to forest processes. In 2007, we tagged, mapped, measured the diameter, and identified all lianas ≥1 cm...
Data
Equations used to calculate Fisher’s alpha, Shannon Index, Dominance, and evenness. (DOC)
Article
Full-text available
Cloud forests are unusual and fragile habitats, being one of the least studied and least understood ecosystems. The tropical Andean dominion is considered one of the most significant places in the world as regards biological diversity, with a very high level of endemism. The biodiversity was analysed in an isolated remnant area of a tropical montan...
Article
Full-text available
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...
Article
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...
Article
The coexistence of a high number of species in the forest is a central issue in tropical ecology. In this paper, we aim to characterise the spatial pattern of woody species in an Andean montane cloud forest to determine whether differences exist among the species in terms of spatial organization and if so, whether these differences are related to t...
Article
The spatial pattern of the different species in complex ecosystems reflects the underlying ecological processes. In this paper a second order moment function is proposed and tested to analyse the spatial distribution of a mark, which could be a tree characteristic such as diameter or height, between two different types of points, which could be two...
Article
Full-text available
Universal kriging gives the optimal linear model to incorporate auxiliary information in data analysis in the presence of spatial dependence of observations if the underlying variogram is known. However, in practice, the variogram is typically unknown and its estimation constitutes one of the major problems in universal kriging theory. In this pape...
Article
Full-text available
Tropical montane cloud forests constitute a rare and fragile ecosystem, which is threatened in many of the areas in which it is found due to the pressure of human-originated disturbances. Cloud forests have been identified as a forest type with high levels of species endemism and biodiversity. The aim of this study, which focuses on a patch of clou...

Questions

Question (1)
Question
I am looking for data contribution and collaboration. If you have some data, you can be involved in this exciting project:
Project goal: We aim to develop a comprehensible model to estimate soil organic carbon changes under perennial crops. Both food and bioenergy crop. Global study.
Methods: Meta-analysis, Inferential Statistics, Environmental Modeling, Advanced Statistical Modeling, Climate Modelling
Project information is here:

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