Ivan LizagaGhent University | UGhent · Faculty of Bioscience Engineering
Ivan Lizaga
PhD in Geology
About
65
Publications
32,155
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1,056
Citations
Citations since 2017
Introduction
Ivan Lizaga currently works at the Isotope bioscience Laboratory (ISOFYS) at Ghent University. He did his PhD at the Department of Soil and Water at the Spanish National Research Council.
Ivan does research in Soil Science, geomorphology, remote sensing and Ecology. Their current project is 'An integrated sediment export quantification approach for sustainable management agroecosystems' which will be focused on Mediterranean and rain forest areas.
Publications
Publications (65)
In the Mediterranean region, the long history of cultivation is associated with significant changes in the original landscape. Agricultural intensification and subsequent land abandonment and reforestation have significantly affected the hydrological behaviour and connectivity patterns of hydrological systems. Thus, information on the spatial distr...
The present dominant trend of retreating and shrinking glaciers is leading to the formation of new soil in proglacial zones. The Cordillera Blanca located in the Peruvian Andes includes the Lake Parón catchment known for the Artesonraju Glacier and its rapid retreat, forming the largest proglacial lake in the region. This work aims to gain knowledg...
Several decades of intensive rainfed, farming in Mediterranean mountains and later land abandonment has led to rapid land use and land cover changes. During recent centuries, the conversion of rangelands into croplands has increased the surfaces prone to erosion. In the southern Pre-Pyrenees, the process was reversed during the middle of the twenti...
The loss of fertile topsoil is one of the principal soil degradation problems in mountain agroecosystems worldwide. Soil erosion rates reach their maximum during exceptional storm events that remove soil particles, especially from unprotected topsoil. In Mediterranean mountainous environments, several centuries of non-irrigated agriculture and the...
Soil erosion and fine particle transport are two of the major challenges in food security and water quality for the growing global population. Information of the areas prone to erosion is needed to prevent the release of pollutants and the loss of nutrients. Sediment fingerprinting is becoming a widely used tool to tackle this problem, allowing to...
Soils constitute one of the most critical natural resources and maintaining their health is vital for agricultural development and ecological sustainability, providing many essential ecosystem services. Driven by climatic variations and anthropogenic activities, soil degradation has become a global issue that seriously threatens the ecological envi...
Recent land use changes, the absence of soil protection between crop periods, and extreme precipitation events have been highlighted as major influential factors in the fluctuations of sediment export in the last decades at the catchment scale worldwide. In this regard, soil erosion and fine-particle export are two of the major concerns of soil nut...
Soil erosion is a major cause of damage to agricultural lands in many parts of the world and is of particular concern in semiarid parts of Iran. We use five machine learning techniques—Random Forest (RF), M5P, Reduced Error Pruning Tree (REPTree), Gaussian Processes (GP), and Pace Regression (PR)—under two scenarios to predict soil erodibility in t...
Erosion causes significant soil and nutrient losses that can reach streams and degrade habitats. Phosphorus (P) is among the nutrients of greatest concern for water pollution. Due to the increase in the number of storm events over the last decade, which could rise further under climate change scenarios, a more in-depth analysis of the effect of rai...
In the Cordillera Blanca, the glaciers delineated by some of the highest peaks in the tropical Peruvian Andes have experienced a fast retreat over the last few decades. At the foot of Artesonraju Peak, the glacier‐fed river conveys fine sediments to Parón Lake, which is enclosed in the proglacial area created by the retreating glaciers of the uniqu...
Purpose
Identifying best practices for sediment fingerprinting or tracing is important to allow the quantification of sediment contributions from catchment sources. Although sediment fingerprinting has been applied with reasonable success, the deployment of this method remains associated with many issues and limitations.
Methods
Seminars and debat...
In this tutorial, we are gonna walk you through the FingerPro package and the last tool out there, and how to implement them.
🌍 Here you'll find the code used during this short tutorial
https://github.com/eead-csic-eesa/fingerPro/blob/master/example_code_2nd_video.R
👍 Subscribe for more tips: https://www.youtube.com/channel/UCllOHYksoXXMeNtBRH0Dv...
Soil erosion is especially severe in areas affected by intermittent heavy rainfalls after dry periods, and human practices such as deforestation. Mediterranean mountain environments underwent conversion of rangelands into croplands during the previous centuries to increase agricultural production but this process was reversed after land abandonment...
Sediment fingerprinting has emerged as a valuable tool for elucidating soil erosion processes and assessing the sources of sediment and particle-bound chemicals. Due to its upward trend in popularity and the parallel advances in analytical methods, different types of tracers such as Compound-Specific Stable Isotopes (CSSIs) have been incorporated t...
Sediment fingerprinting experiments have been used to demonstrate the sensitivity of numerical mixing model outputs to different particle size distributions in source materials and experimental sediment mixtures. The study aims to examine further grain size effects in the distribution of geochemical elements by soils through a laboratory experiment...
The mineral composition of soils and weathering processes are known to control the natural radioactivity of soils but research on the influence of water erosion and of main soil properties in the spatial variability of lithogenic and fallout radionuclides remains little investigated in heterogeneous agroecosystems with complex landscape. An extensi...
A Compound Specific Stable Isotope (CSSI) sediment tracing approach is applied for the first time in a Mediterranean mountain agroforestry catchment subjected to intense land use changes in the past decades. Many Mediterranean mountain environments underwent conversion of rangelands into croplands during the previous centuries to increase agricultu...
Fingerprinting technique is a widely used tool to assess the sources of sediments and particle bound chemicals within a watershed, and the results obtained from unmixing models are becoming valuable data to support soil and water resources monitoring and conservation. Nowadays, numerous studies have used fingerprinting techniques to examine specifi...
Soil erosion can present a major threat to agriculture due to loss of soil, nutrients, and organic carbon. Therefore, soil erosion modelling is one of the steps used to plan suitable soil protection measures and detect erosion hotspots. A bibliometric analysis of this topic can reveal research patterns and soil erosion modelling characteristics tha...
To gain a better understanding of the global application of soil erosion prediction models, we comprehensively
reviewed relevant peer-reviewed research literature on soil-erosion modelling published between 1994 and 2017.
We aimed to identify (i) the processes and models most frequently addressed in the literature, (ii) the regions
within which mod...
To gain a better understanding of the global application of soil erosion prediction models, we comprehensively reviewed relevant peer-reviewed research literature on soil-erosion modelling published between 1994 and2017. We aimed to identify (i) the processes and models most frequently addressed in the literature, (ii) the regions within which mode...
Soil erosion can present a major threat to agriculture due to loss of soil, nutrients, and organic carbon. Therefore, soil erosion modelling is one of the steps used to plan suitable soil protection measures and detect erosion hotspots. A bibliometric analysis of this topic can reveal research patterns and soil erosion modelling characteristics tha...
Episode 1 - The basics of the technique
In this tutorial, we are gonna walk you through the basics of the technique, why is the technique needed and the basics steps you need to take in order to implement it.
Link to the video
https://www.youtube.com/watch?v=LcrM_vLOa_I&t=3s&ab_channel=UnmixingScience
Soil erosion and fine particle exports are two of the major concerns of soil nutrient loss and water quality decrease nowadays. In Mediterranean mountainous environments, agricultural practices during different cropland stages likely increase sediment supplies and the export of fertilisers and pesticides out into the drainage system. In this study,...
Soil loss by erosion processes is one of the largest challenges for food production and reservoir siltation around the world. Information on sediment, nutrients and pollutants is required for designing effective control strategies. The estimation of sediment sources is difficult to get using conventional techniques, but sediment fingerprinting is a...
Sediment export rates are sensitive to different parent materials, changes in land use, human impact and climate, but the landscape response to such changes is difficult to interpret, and more knowledge of soil erosion hot spots is still needed. Special focus should be directed to examine the role of the erosional impact of water movement in mobili...
In the changing glacierized areas of the maritime Arctic region, fluxes of sediments are of high intensity during the Arctic melting season. On the Western Spitsbergen Island around Grønfjord, several glaciers have declined rapidly over the last century. The Aldegonda Glacier has retreated about 2 km since 1911 when the glacier tongue reached the s...
Systematic bibliometric investigations are useful to evaluate and compare the scientific impact of journal papers, book chapters and conference proceedings. Such studies allow the detection of emerging research topics, the analyses of cooperation networks, and the collection of in-depth insights into a specific research topic. In the presented work...
Soil erosion induced by runoff is a main hydrological pathway for lateral soil carbon movement in terrestrial landscapes. Consequences of accelerated soil erosion have led to the degradation of soil resources and reduction of soil productivity. Water erosion includes detachment, soil transport and sedimentation processes. The dynamics of soil erosi...
Soil erosion induced by runoff is a main hydrological pathway for lateral transport of carbon in terrestrial landscapes. More information about how water erosion influences the carbon gains and losses at different erosional and depositional landform positions is critical, especially in fragile agroecosystems with a variety of land uses and ephemera...
Soil salinization is one of the most important causes for land degradation and desertification and is an important threat to land management, farming activities, water quality, and sustainable development in arid and semi-arid areas. Soil salinization is often characterized with significant spatiotemporal dynamics. The salt-affected soil is predomi...
The aim of this research was to analyse the effect of rainfall intensity and slope on soil and nutrient losses by hydric erosion in soils with different hydrological characteristics. This research was carried out on soils collected from slopes with different land uses/covers (LU/LC)-forest, scrub, agricultural, afforested and barren land-, from a m...
Patterns of erosion, transport and deposition of soil particles not only affect the distribution of mineral fraction of the soil but their organic components. The spatial variability of soil nutrients in Mediterranean mountain agroecosystems that combine complex land uses and abrupt topography is poorly documented despite emerging concerns on nutri...
In the Mediterranean region, floods are expected to increase as a result of climate change and knowledge of soil erosion hot spots during exceptional rainfalls is required to support mitigation measures. This study quantifies the main sediment sources during an exceptional rainfall event in 2012 (235 mm) at the outlet of two catchments located in N...
Soil salinization is one of the biggest challenges for food production worldwide and an important threat to farming activities, water quality, land degradation and sustainable development in arid and semi-arid areas. Soil saliniza-tion is mainly characterized by significant spatiotemporal dynamics. The salt-affected soils are predominant in the Ebi...
As in other regions of the world, glaciers in South America like in Torres del Paine National Park are shrinking. The trends of increasing temperatures would accelerate melting process that will affect not only populations but also natural resources as water and soil that support life. Recent works in other polar and cold regions have shown the use...
This session aims to encourage remote sensing researchers from the perspective of different disciplines (soil scientist, agronomist and agricultural engineer) to share and present their relevant research in sensing technologies applied to agriculture.
SSS10.3 session emphasize remote sensing studies (e.g. soil diagnostics and crop monitoring) to...
Sediment source fingerprinting is increasingly used to provide insight into the dynamics of catchment sediment transfer processes, yet relatively few studies seek to validate source apportionments obtained from unmixing models. Our work focuses on simulating natural processes to test the accuracy of source apportionments obtained using a multivaria...
Increasing complexity in human-environment interactions at multiple watershed scales presents major challenges to sediment source apportionment data acquisition and analysis. Herein, we present a step-change in the application of Bayesian mixing models: Deconvolutional-MixSIAR (D-MIXSIAR) to underpin sustainable management of soil and sediment. Thi...
Changes in land use due to human activities on soils and vegetation are a widespread problem that often leads to land degradation and are of considerable concern worldwide in the context of environmental degradation and global climate change. Over last centuries, the conversion of rangelands into croplands had increased the surfaces prone to erosio...
Land degradation by water erosion is one of the main problems in Mediterranean areas. This problem is of particular relevance in mountain areas, where intensive farming and land use changes including land abandonment and changes in soil cover occur. This research analysed the contribution of different land uses to soil and nutrient losses in an eph...
Soil magnetic susceptibility (MS) is a rapid and cost-effective technique that has been applied in environmental
studies for monitoring soil pollution by heavy metals and soil redistribution and to infer soil forming processes.
Few studies involved magnetic research in arable soils and limited information is available about the use of field
magneti...
In Mediterranean mountainous environments, the removal of natural vegetation for developing agriculture increased the surface areas prone to erosion in the past centuries. In Southern Pre-Pyrenees, the process was inverted during the middle of the 20th century. This work aims to assess how land-use changes after widespread land abandonment affect s...
Many ice-free environments in Maritime Antarctica are undergoing rapid and substantial environmental changes in response to recent climate trends. This is the case of Elephant Point (Livingston Island, South Shetland Islands, SSI), where the glacier retreat recorded during the last six decades exposed 17% of this small peninsula, namely a moraine e...
Soils in ice‐free areas of Elephant Island (South Shetland Islands) have been forming since the last deglaciation following the glacial retreat that started in the area probably later than 9.7‐5.5ka. In paraglacial landscapes landforms and processes in transition from glacial to non‐glacial conditions, are experiencing rapid environmental adjustmen...
Land use conversion from cropland to natural vegetation can be an effective mechanism to reduce soil C losses and promote soil C recovery affecting the storage of C in soils. Understanding how anthropogenic land use changes lead to implications for soil C storage and how it affects the distribution of total carbon provide information that will supp...
Soils are the largest C reservoir of terrestrial ecosystems and play an important role in regulating the concentration of CO 2 in the atmosphere. The exchange of CO 2 between the atmosphere and soil controls the balance of C in soils. The CO 2 fluxes may be influenced by climate conditions and land use and cover change especially in the upper soil...
Soil redistribution processes play an important role influencing the spatial distribution patterns of soil and associated soil organic carbon (SOC) at landscape scale. Information on drivers of SOC dynamics is key for evaluating both soil degradation and SOC stability that can affect soil quality and sustainability. 137Cs measurements provide a ver...
The spatial variability of soil organic carbon (SOC) and nitrogen (SON) can be affected by environmental factors such as land use change, type of vegetation, topographic characteristics, soil management practices and specially soil redistribution processes. The use of fallout 137Cs derived from nuclear testing in the past century has been widely us...
Fine-grained sediment is an important pollutant and determining its provenance is an important issue for reservoir management and river quality. Sediments accumulated in reservoirs have greatly decreased water storage capacities and are a major threat to the sustainability of water resources around the world. Using fingerprinting procedures is now...
Increased sediment erosion levels can lead to degraded water and food quality, reduced aquatic biodiversity, decrease reservoir capacity and restrict recreational usage but determining soil redistribution and sediment budgets in watersheds is often challenging. One of the methods for making such determinations applies sediment fingerprinting method...
In Maritime Antarctica important environmental changes are affecting ice-free environments of the South Shetland Islands and the northern Antarctica Peninsula. In the Elephant Point Peninsula (Livingstone Island) a rapid glacier retreat during the last decades has exposed already around 20% of its 1.16 km2 surface. Despite soil development is taken...
Fallout caesium-137 has been used to trace soil redistribution in abandoned fields located in the Central Spanish Pyrenees. A total of 28 fields with different lengths, slope angles and time since abandonment were selected on a representative south facing slope of the Estarrún valley. The local reference inventory and the magnitude and spatial dist...
The Ebro river gypsum scarp shows a high density of inactive and currently active mass movements. An analysis of the numerous factors and processes which control the evolution of this scarp, his geomorphological landforms and a 3D diagram explaining his evolution was performed. Both, uploading in a family of joints parallel to the scarp, and the pr...
No. 0088 Categories Symposium 19: Erosion threats in mountain environments: processes, impacts and mitigation Title Using roughness and C-factor in a connectivity index to evaluate the impact of land use/cover changes in a Mediterranean mountain catchment Abstract Sediment connectivity has an important effect on the development of morphological lan...
Land use/cover changes since 1957 by human intervention have probably increased connectivity and runoff in Barués Catchment, mostly due to tillage and geomorphological processes such as landsliding, gullying incised streams and severe soil erosion whilst abandoned arable lands and reforested areas seems to be very efficient in reducing runoff and c...
In Elephant Point Peninsula the glacier retreat recorded during the second half of the XX century has exposed 17% of its 1.16 km2 surface (Oliva & Ruiz-Fernández, 2016). This study aims at characterizing the upper soil layers of recently formed soils developed on different geomorphic features to investigate the properties that can reveal features r...
Ambal ridge, covering 4km2, is a salt pillow of Gachsaran Formation with significant salt exposures in direct contact with the Karun River, Zagros Mountains. The highly cavernous salt dome is currently being flooded by the Gotvand Reservoir, second largest in Iran. Geomorphic evidence, including the sharp deflection of the Karun River and defeated...
Projects
Projects (4)
This project will focus on testing and developing powerful specific land use tracers, such as Compound Specific Stable Isotopes (CSSI) and environmental DNA (eDNA), for improving the land cover discrimination of sediment provenance through the collection and dating of sediment cores in sink areas.
This forum is used by the working group created to brainstorm and publicly discuss the ongoing activities and challenges of the joined meta-analysis study.
This is to be considered as the first collaborative research activity following the "Soil erosion modelling Workshop (Global Alliance)". Hopefully, this is going to be the first initiative of a long series of scientific collaborations.
This research would contribute to a better understanding of soil redistribution dynamics in agricultural mountain landscapes and its effect on some of the main soil properties.