Markus Gastauer

Markus Gastauer
VALE | VALE · Instituto Tecnológico Vale

About

139
Publications
29,573
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1,411
Citations
Citations since 2017
110 Research Items
1349 Citations
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Introduction
Markus Gastauer currently works at the Instituto Tecnológico Vale, VALE. Markus does research in Evolutionary Biology, Botany and Ecology. Their most recent publication is 'Plantas nativas para recuperação de áreas de mineração em Carajás'.

Publications

Publications (139)
Article
Full-text available
Fungi execute many ecosystem functions and are thus expected to contribute substantially to ecosystem stability along environmental gradients. Here, we aimed to describe the fungal communities along a vegetation gradient found in Amazonian cangas using ITS2 metabarcoding. Rupestrian canga vegetation covers ironstone outcrops from the Carajás Nation...
Article
Full-text available
The revegetation of steep slopes after mining and infrastructure projects is not an easy task. To enhance the effectiveness of revegetation projects, the present study aimed to review (i) specific challenges of steep slope revegetation, (ii) ecological succession patterns in similar environments, (iii) soil conditioning and revegetation strategies...
Article
Jaborandi (Pilocarpus microphyllus), an endemic species of the Brazilian flora threatened with extinction, is the only natural source of pilocarpine, an alkaloid widely used in the pharmaceutical industry. This compound is extracted from the leaf tissue and may be affected by edaphic and nutritional variations. The aim of this study was to correlat...
Article
Full-text available
Mimosa acutistipula is endemic to Brazil and grows in ferruginous outcrops (canga) in Serra dos Carajás, eastern Amazon, where one of the largest iron ore deposits in the world is located. Plants that develop in these ecosystems are subject to severe environmental conditions and must have adaptive mechanisms to grow and thrive in cangas. Mimosa acu...
Article
Full-text available
The lack of knowledge about seeds of native species constitutes a major challenge to their use in environmental rehabilitation activities. In this study, we analysed the morphology and germination of native species seeds found in areas close to Fe and Mn mines in the Eastern Amazon. We also evaluated the effect of scarification on seeds showing nat...
Preprint
Mimosa acutistipula is endemic to Brazil and grows in ferruginous outcrops (canga) in Serra dos Carajás, eastern Amazon, where one of the largest iron ore deposits in the world is located. Plants that develop in these ecosystems are subject to severe environmental conditions and must have adaptive mechanisms to grow and thrive in cangas. Mimosa acu...
Article
Arbuscular mycorrhizal fungi (AMF) perform important ecological functions in the rehabilitation of degraded areas, acting through several mechanisms, such as the production of glomalin-related soil proteins (glomalin), which act as cementing agents and nutritional reserves and sequester carbon in soil. The aim of the present study was to determine...
Article
Full-text available
Background and Aims The Atlantic Forest biodiversity hotspot is a complex mosaic of habitat types. However, the diversity of the rainforest at the core of this complex has received far more attention than that of its marginal habitats, such as cloud forest, semideciduous forest or restinga. Here, we investigate broad-scale angiosperm tree diversity...
Article
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Few studies have evaluated the genetic status of medicinal plants exposed to commercial harvesting. Here, we examine the genetic variability of Pilocarpus microphyllus, an endemic and threatened medicinal plant species from the eastern Amazon, across its largest remaining wild population. Popularly known as jaborandi, species of Pilocarpus genus ar...
Article
Full-text available
Mining activity is of great economic and social importance; however, volumes of metallic ore tailings rich in potentially toxic elements (PTEs) may be produced. In this context, managing this environmental liability and assessing soil quality in areas close to mining activities are fundamental. This study aimed to compare the concentrations of PTEs...
Article
Road networks cause degradation by mean of disturbances that can alter the biodiversity and the functioning of the Caatinga ecosystems. We tested the hypotheses that (i) Caatinga vegetation near roads is less taxonomically, functionally and phylogenetically diverse, (ii) phylogenetically and functionally more clustered than vegetation further from...
Article
Full-text available
Continuous systematic monitoring is necessary to measure the success or failure of mineland rehabilitation. Here, we aimed to outline how measures of phylogenetic diversity and phylogenetic community structure complement existing monitoring frameworks along a waste pile rehabilitation chronosequence in Carajás National Forest, Brazil, including pri...
Article
Full-text available
Background Canga is the Brazilian term for the savanna-like vegetation harboring several endemic species on iron-rich rocky outcrops, usually considered for mining activities. Parkia platycephala Benth. and Stryphnodendron pulcherrimum (Willd.) Hochr. naturally occur in the cangas of Serra dos Carajás (eastern Amazonia, Brazil) and the surrounding...
Article
Full-text available
Open-cast iron mining causes drastic disturbances in soil properties. Recovery of soil chemical and physical properties is essential for successful revegetation and landscape rehabilitation. To identify changes in soil properties during the mining and revegetation process, soil samples were collected from undisturbed sites represented by forest and...
Article
Full-text available
Amazonian reforestation programs emphasize the use of species native to the region. However, reforestation using native species requires the production of high-quality seedlings. The present study aimed to evaluate the development and quality of seedlings of paricá (Schizolobium parahyba var. amazonicum), a species native to the Amazon with high po...
Article
Full-text available
Dioclea apurensis Kunth is native to ferruginous rocky outcrops (known as canga) in the eastern Amazon. Native cangas are considered hotspots of biological diversity and have one of the largest iron ore deposits in the world. There, D. apurensis can grow in post-mining areas where molecular mechanisms and rhizospheric interactions with soil microor...
Article
Full-text available
Mineland rehabilitation is intended to reduce the overall impacts of mining on biodiversity and ecosystem services and requires periodic monitoring to guarantee institutional tractability and to refine rehabilitation practices. As time- and money-consuming field surveys challenge this monitoring, the aim of this study was to develop a remote sensin...
Article
Mining activities have expanded worldwide to meet industrial demands and technological development. However, these activities have a negative impact on the environment that must be addressed. Thus, this study aimed to monitor the effects of the revegetation process on microbial proxies in an iron mine-degraded landscape using the biomass, activity,...
Preprint
Full-text available
Dioclea apurensis Kunth is native to ferruginous rocky outcrops (known as canga) in the eastern Amazon. Native cangas are considered hotspots of biological diversity and have one of the largest iron ore deposits in the world. There, D. apurensis can grow in post-mining areas where molecular mechanisms and rhizospheric interactions with soil microor...
Article
Full-text available
Rehabilitation is the key factor for improving soil quality and soil carbon stock after mining operations. Monitoring is necessary to evaluate the progress of rehabilitation and its success, but the use of repeated field surveys is costly and time-consuming at a large scale. This study aimed to monitor the environmental/soil rehabilitation process...
Article
Full-text available
The fire frequency in the Amazon increased rapidly after the 1990s due to deforestation and forest degradation, and it is expected to increase in response to climate change. We analyzed the fire occurrence and assessed seven fire hazard indices in the municipality of Canaã dos Carajás, in the eastern Amazon, for different land use and land cover (L...
Article
Full-text available
Mimosa acutistipula var. ferrea (Fabaceae) is endemic to ferruginous tropical rocky outcrops in the eastern Amazon, also known as canga. Canga are often associated with mining activities and are the target of protection and rehabilitation projects. M. acutistipula stands out in this biodiversity hotspot with high growth rates, even in rehabilitatin...
Article
Full-text available
Mineland rehabilitation is performed to reduce the overall impacts of mining operations. Thus, statistically validated and easily measurable indicators are necessary to monitor the environmental status along time, enhance the rehabilitation process, and increase institutional tractability. The objective of this study is to derive an effective indic...
Article
Full-text available
To reduce the net losses of biodiversity and ecosystem services caused by iron ore mining in Brazil, mineland rehabilitation using native plant species is necessary. However, systematic knowledge about which plant species are the best candidates for mineland rehabilitation is lacking. Therefore, iron mining companies working on the Urucum Massif re...
Article
The environmental benefits and lower implementation costs of (assisted) natural forest regrowth (NFR) compared to tree planting qualify it as a viable strategy to scale up forest restoration. However, NFR is not suitable in all places, because the potential for forest regeneration depends on the socio‐environmental context and differs greatly over...
Preprint
Full-text available
Background Canga is the Brazilian term for the savanna-like vegetation harboring several endemic species on iron-rich rocky outcrops, usually considered for mining activities. Parkia platycephala Benth. and Stryphnodendron pulcherrimum (Willd.) Hochr. naturally occur in the cangas of Serra dos Carajás (eastern Amazonia, Brazil) and the surrounding...
Article
Full-text available
The revegetation of areas impacted by iron mining may be hampered by a series of chemical and physical impediments exhibited by those areas. Physical problems, such as penetration resistance and steep slopes, may outweigh the chemical problems, such that both should be considered for soil recovery. This study aimed to evaluate the main soil attribu...
Article
Full-text available
Opencast mining drastically alters the landscape due to complete vegetation suppression and removal of topsoil layers. Precise indicators able to address incremental changes in soil quality are necessary to monitor and evaluate mineland rehabilitation projects. For this purpose, metaproteomics may be a useful tool due to its capacity to shed light...
Article
Full-text available
As Amazon deforestation rates reach the highest levels observed in the past decade, it is extremely important to direct conservation efforts to regions containing preserved forests with a high risk of deforestation. This requires forecasting deforestation, a complex endeavor due to the interplay of multiple socioeconomic and environmental factors a...
Article
Rehabilitation of mining areas is a relevant and current subject, in which the response of microbial communities is an important evaluation tool regarding their progress. In this context, our study had the objective of evaluating the effect of rehabilitation on the community composition and activity of arbuscular mycorrhizal fungi, and their relati...
Article
Full-text available
We examined the reproductive strategy of two Amazonian quillworts (Isoëtes cangae and Isoëtes serracarajensis), endemic and threatened species of canga ecosystems. Sexual propagation was examined by in vitro fertilization assays, while asexual propagation was examined by tiller emission. Isoëtes cangae is an outcrossing species that reproduces excl...
Article
Full-text available
Phosphorus (P) fixation in the soil reduces the utilization of this element by plants and can be one of the main problems for fertilization management in soils containing Fe oxides. As a strategy to minimize the effects of P retention, organic materials, such as biochar or commercial composts, may be useful tools to maintain P availability and dela...
Article
Full-text available
Bee pollinators are key components of terrestrial ecosystems. Evidence is mounting that bees are globally in decline, and species with a higher degree of specialization are the most vulnerable to local extinction. However, ecological features that could explain bee specialization remain poorly tested, especially in tropical species. Here, we aim to...
Article
Full-text available
Organic materials, such as biochar and organic compost, can reduce P sorption mechanisms and improve soil fertility, benefiting the reclamation of areas impacted by mining. This study evaluated how the chemical properties of Fe mining soil, the adsorption of P onto this substrate, and the growth of the native plant Dioclea apurensis, were affected...
Chapter
Full-text available
A partir dos resultados obtidos na primeira fase de estudos, uma nova série de atividades foram realizadas para ampliar o conhecimento da ecologia de Isoetes cangae e fornecer subsídios para sua conservação. Para reduzir os riscos de perda da espécie, estas atividades têm por objetivo ampliar sua ocorrência e perpetui-dade em ambiente natural. Assi...
Chapter
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Introdução Os projetos de atividades industriais de mineração na Serra dos Carajás são acompanhados por expedições científicas e pesquisas botânicas. Os estudos levaram à descrição de duas espécies do gênero Isoetes L. (I. can-gae e I. serracarajensis), endêmicas dos campos rupes-tres ferruginosos (cangas), que ocorrem no topo dessas serras (Pereir...
Article
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Native species may have adaptive traits that are advantageous for overcoming the adverse environmental conditions faced during the early stages of mine land rehabilitation. Here, we examined the nitrogen (N) growth responses of two native perennial grasses (Axonopus longispicus and Paspalum cinerascens) from canga in nutrient-poor iron mining subst...
Article
Full-text available
Context Island Biogeography Theory and Habitat Amount Hypothesis postulate species richness and densities to increase with connectivity and habitat amount, while niche theory highlights the importance of environmental heterogeneity for species coexistence. Additional ecological niches in heterogeneous landscapes increase species richness and functi...
Article
Full-text available
Environment and plant interactions are important drivers of forest community assembly and dynamics. This study explored how forest dynamics influence the phylogenetic structure of Tropical Atlantic Forests. We hypothesized that: (a) maximum diameter and maximum height are conserved traits within the phylogenetic lineages; (b) the set of dead large...
Preprint
Full-text available
The revegetation of areas impacted by iron mining may be hampered by a series of chemical and physical impediments exhibited by those areas. Physical problems, such as penetration resistance and steep slopes, may outweigh the chemical problems, such that both should be considered for soil recovery. This study aimed to evaluate the main soil attribu...
Article
This study addresses paleoclimate influences in a southern Amazonia ecotone based on multiproxy records from lakes of the Carajás region during the last 45k cal a bp. Wet and cool environmental conditions marked the initial deposition in shallow depressions with detrital sediments and high weathering rates until 40k cal a bp. Concomitantly, forest...
Article
Full-text available
Human activities change natural landscapes, and in doing so endanger biodiversity and associated ecosystem services. To reduce the net impacts of these activities, such as mining, disturbed areas are rehabilitated and restored. During this process, monitoring is important to ensure that desired trajectories are maintained. In the Carajás region of...
Article
Full-text available
The application of sustainability principles to mining activities remains challenging. Explorations of non-renewable natural resources are irreversible; however, they can be better compensated for if the profit resulting from extraction is reinvested in social and human well-being and if environmental impacts are repaired. Thus, the evaluation of m...
Technical Report
A baixa disponibilidade de fósforo (P) é um dos principais problemas em áreas ricas em óxidos de Fe, o que dificulta o manejo da fertilização com fosfato devido às reações de sorção, notadamente nas áreas de mineração de Fe. O uso de materiais orgânicos, como biocarvão ou composto comercial são alternativas que podem reduzir os mecanismos de sorção...
Technical Report
A retenção de P gera baixa utilização desse elemento pelas plantas e pode ser um dos principais problemas para o manejo de fertilização do solo em áreas ricas em óxidos de Fe, como encontrado nas áreas de exploração desse elemento na Província Mineral de Carajás (PMC). Como forma de minimizar os efeitos da retenção de P, materiais orgânicos, como b...
Preprint
Full-text available
Background Tropical forests hold high biodiversity, which challenges the selection of species for forest restoration. For a site-specific restoration is required the understanding of the main influences ruling the assemblages. We aimed to answer three questions. 1) how do environmental variables influence taxonomic, phylogenetic diversities, and th...
Article
Two competing ecological hypotheses, i.e., the niche complementarity (NCH) and the mass ratio (MRH) hypotheses , have been proposed to explain how stand structural complexity, functional trait diversity and composition simultaneously determine aboveground biomass in natural forests. Here, we hypothesized that the effects of stand structural attribu...
Article
Full-text available
We promoted microbial iron reduction and subsequent iron oxidation, in crushed iron‐rich mine waste at pilot scale (~1 m3). Repeated iron cycling led to the formation of new iron oxide cements cementing grains and aggregating the waste material. The technology has promise for accelerating remediation of iron ore mine sites. Accelerating microbial i...
Article
Secondary forests emerging during traditional shifting cultivation practices are increasingly recognized for their fulfillment of ecosystem services and mitigation potential of climate change and biodiversity losses. The soil seed bank as a recruit reservoir is a limiting factor for natural forest regeneration of such secondary forests and is decis...
Article
Full-text available
Ferruginous tropical rocky outcrops such as that of banded iron formations, in Brazil also known as ‘cangas’, are characterized by severe abiotic conditions, such as shallow soils and high temperatures and represent unique hotspots of biodiversity. This study aimed to analyze a metaproteome from a typical canga soil, which may be critical to unders...
Book
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Este compêndio de trabalhos técnico-científicos elaborados na Gerência de Espeleologia e Tecnologia trata-se de uma síntese dos principais artigos publicados em periódicos nacionais e internacionais e congressos científicos entre os anos de 2018 e 2019. No intuito de se aprimorar os conhecimentos da dinâmica e funcionamento dos ecossistemas cavern...
Article
Full-text available
Impacted areas by iron mining may face challenges in the management of phosphate fertilization and reduced efficiency of rehabilitation practices, thus extending the time required for the rehabilitation of these areas. The objective of this study was to evaluate phosphorus (P) lability in soils of native forest and ferriferous canga areas (savanna...
Article
Full-text available
Despite the importance of climate‐adjusted provenancing to mitigate the effects of environmental change, climatic considerations alone are insufficient when restoring highly degraded sites. Here we propose a comprehensive landscape genomic approach to assist the restoration of moderately disturbed and highly degraded sites. To illustrate it we empl...
Article
Altitude and environmental variables such as edaphic properties are considered determinants of species distribution and community composition in mountain ecosystems. Here, we aimed to outline the effects of distinct mountain peaks, altitude and soil properties on community composition, species density, phylogenetic structure and diversity of angios...
Preprint
Full-text available
Despite the importance of climate-adjusted provenancing to mitigate the effects of environmental change, climatic considerations alone are insufficient when restoring highly degraded sites. Here we propose a comprehensive landscape genomic approach to assist the restoration of moderately disturbed and highly degraded sites. To illustrate it we empl...
Preprint
Full-text available
Native tropical forests hold high levels of diversity, challenging forest restoration of large areas in a global change scenario. For a site-specific restoration is required the understanding of the main influences ruling the assemblages. We aimed to answer three questions. 1) how do environmental variables influence taxonomic, phylogenetic diversi...
Article
Functional ecology provides useful tools for selecting native species for rehabilitation purposes. Here, we evaluated a list of native tree and shrub species as candidates for use in waste pile rehabilitation in the Carajás National Forest, eastern Amazon, Brazil, to increase the diversity and stability of the reinstated communities. Native species...
Preprint
Full-text available
Road networks cause disturbances that can alter the biodiversity and the functioning of the Caatinga ecosystems. We tested the hypotheses that (i) Caatinga vegetation near roads is less taxonomically, functionally and phylogenetically diverse, (ii) phylogenetically and functionally more clustered than vegetation further from roads, (iii) plant trai...
Article
Full-text available
Remote sensing technologies can play a fundamental role in the environmental assessment of open-cast mining and the accurate quantification of mine land rehabilitation efforts. Here, we developed a systematic geographic object-based image analysis (GEOBIA) approach to map the amount of revegetated area and quantify the land use changes in open-cast...