Isabel Schmidt

Isabel Schmidt
University of Brasília | UnB · Department of Ecology

PhD

About

65
Publications
24,525
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2,158
Citations
Citations since 2017
43 Research Items
1825 Citations
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Publications

Publications (65)
Article
Full-text available
Large‐scale restoration programs in the tropics require large volumes of high quality, genetically diverse and locally adapted seeds from large number of species. However, scarcity of native seeds is a critical restriction to achieve restoration targets. In this paper, we analyze three successful community‐based networks that supply native seeds an...
Article
Sustainable harvest of non-timber forest products (NTFPs) can play an important role in biodiversity conservation and livelihoods. However, harvesting policy intended to promote conservation are frequently either ineffective or too complicated. Successful policies should consider ecological impacts, local ecological knowledge and management practic...
Article
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The coexistence of grasses, herbs, shrubs and trees characterizes savannas; therefore, to restore such ecosystems one should consider re-introducing all these growth forms. Currently, little is known about field establishment of most “Cerrado” (Brazilian savanna) species that could be used for restoration purposes. Most knowledge on restoration is...
Article
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Several decades of frustrated attempts to prevent fires in the Brazilian Savanna (Cerrado) have led to deleterious ecological and management consequences. In 2014, the first Integrated Fire Management (IFM) programme was launched in three protected areas (PAs). The IFM programme considers local practices, ecological information, management options...
Article
Understanding the resilience of ecosystems to different land uses is critical to elucidate the mechanisms underlying regeneration processes and plan more sustainable land-use systems. While these relationships are well understood in continuous tropical forests, they are still poorly comprehended in forest formations embedded in a savanna matrix, ev...
Article
1. Ecological restoration of tropical open ecosystems remains challenging for both science and practice. Over the last decade, innovative techniques have been developed, but whether they have been successful or not remains to be demonstrated. Assessing the outcomes of these initiatives is crucial to drive the following steps to improve tropical gra...
Article
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There is high potential for ecosystem restoration across tropical savannah-dominated regions, but the benefits that could be gained from this restoration are rarely assessed. This study focuses on the Brazilian Cerrado, a highly species-rich savannah-dominated region, as an exemplar to review potential restoration benefits using three metrics: net...
Article
Seedling planting (SP) and direct seeding (DS) are the most used methods of tropical tree propagation. We compared the performance of SP and DS plants of four seasonal tropical species over six years, considering survival, growth, above and belowground biomass, and the costs of planting and maintenance. We planted 48 pairs of SP and DS plants of Am...
Article
We introduce the concept of Biome Awareness Disparity (BAD)-defined as a failure to appreciate the significance of all biomes in conservation and restoration policy-and quantify disparities in (i) attention and interest, (ii) action, and (iii) knowledge amongst biomes in tropical restoration science, practice, and policy. By analysing 50,000 tweet...
Article
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Around 40% of the original Brazilian savanna territory is occupied by pastures dominated by fast‐growing exotic C 4 grasses, which impact ecosystem nutrient cycling. The restoration of these areas depends on the re‐establishment of soil processes. We assessed how restoration of abandoned pastures through direct seeding of native species and land‐ma...
Article
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The UN Decade of Ecosystem Restoration is poised to trigger the recovery of ecosystem services and transform structural injustices across the world in a way unparalleled in human history. The inclusion of diverse Indigenous and local communities to co-create robust native seed supply systems is the backbone to achieve the goals for the Decade. Here...
Article
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Native vegetation across the Brazilian Cerrado is highly heterogeneous and biodiverse and provides important ecosystem services, including carbon and water balance regulation, however, land-use changes have been extensive. Conservation and restoration of native vegetation is essential and could be facilitated by detailed landcover maps. Here, acros...
Article
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Species loss leads to changes in ecosystem function and services, impacting human well-being. Although biodiversity restoration is pivotal to circumvent this situation, the techniques for restoring old-growth savannas are still limited and the restoration outcomes remain unpredictable. Here, we use a trait-based approach to understand the functiona...
Article
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Restaurações de savanas neotropicais são muitas vezes realizadas de forma inadequada,desconsiderando características ecológicas dessas vegetações. Ameaçadas pela conversão paraatividades agrícolas e introdução de espécies invasoras, a conservação desses ambientes dependeda restauração ecológica. Em locais com presença de espécies exóticas invasoras...
Article
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Este artigo apresenta o projeto Jardins de Cerrado e suas atividades iniciais. Desde 2015, fazemos expedições em busca de plantas (o chamado planthunting), cultivo de ervas e arbustos nativos, experimentos científicos e jardins experimentais. Testamos metodologias de projeto e implantação, baseadas nos jardins naturalistas contemporâneos. O objetiv...
Article
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Brazil has recently (2014) changed from a zero-fire policy to an Integrated Fire Management (IFM) program with the active use of prescribed burning (PB) in federal Protected Areas (PA) and Indigenous Territories (IT) of the Brazilian savanna (Cerrado). PB is commonly applied in the management of fire-prone ecosystems to mitigate large, high-intensi...
Article
Fire is an important ecological disturbance, but anthropogenic wildfires increasingly threaten native ecosystems and human lives. In fire-prone ecosystems, zero-fire policies have been replaced by active fire management to reduce the risk of wildfires and improve ecological outcomes. The environmental drivers of fire behavior are widely known, but...
Article
The Brazilian savanna (Cerrado) is considered the most floristically diverse savanna in the world, home to more than seven thousand species. The region is a mosaic of savannas, grasslands and forests whose unique biophysical and landscape attributes are on the basis of a recent ecoregional map, paving the way to improved region-based strategies for...
Article
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Restoration techniques tailored to grasslands are needed to improve the effectiveness of restoration in tropical landscapes. In this study, we investigated the joint effects of plant–soil legacies and soil inocula in native and invaded Cerrado grasslands to evaluate whether different microbial origins affect plant–soil feedbacks and the likelihood...
Chapter
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In this book chapter, we explore how community participation and the direct seeding technique for restoring the neotropical savanna have created innovative methods and seed supply systems, which offer significant local livelihood outcomes in Central Brazil. By focusing on the experiences of the Cerrado de Pé Association and restoration projects in...
Article
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Tropical savannas are known for the fire‐prone ecosystems, yet, riparian evergreen forests are another important landscape feature. These forests usually remain safe from wildfires in the wet riparian zones. With global changes, large wildfires are now more frequent in savanna landscapes, exposing riparian forests to unprecedented impact. In 2017,...
Article
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Despite growing recognition of the conservation value of grassy biomes, our understanding of how to restore biodiverse tropical and subtropical grassy biomes (grasslands and savannas; TGB) remains limited. Several tools have recently been identified for TGB restoration including prescribed fires, appropriate management of livestock and wild herbivo...
Article
In 2019 Brazil had the highest wildland fire occurrence in South America during the last 15 years. Added to the Amazon, the Brazilian savanna (Cerrado) faces changes in fire regimes. Climatic changes and the recent weakening of environmental law enforcement are factors, but historic and large-scale trends and drivers of fire regimes must be analyze...
Article
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Bastin et al .’s estimate (Reports, 5 July 2019, p. 76) that tree planting for climate change mitigation could sequester 205 gigatonnes of carbon is approximately five times too large. Their analysis inflated soil organic carbon gains, failed to safeguard against warming from trees at high latitudes and elevations, and considered afforestation of s...
Article
The use of fire by cattle ranchers is a major source of conflict between conservationists and local communities in tropical savannas. We evaluate the role of traditional pastoral management in wildfire prevention in two protected areas within the Brazilian savanna. Finegrain field data from transect walks and interviews were combined with geospatia...
Chapter
In the Brazilian Cerrado, the veredas (swampy palm forests) are legally protected and the use of fire in these wetlands is normally prohibited. Through collaborative research with quilombola farmers who cultivate within an ecological station (protected area), we undertook a preliminary assessment of local uses and environmental impacts of agricultu...
Article
Tropical grassland-savanna mosaics are threatened globally, but they are challenging to restore because highly competitive pasture grasses inhibit recovery and are not shaded out by the patchy tree cover. We analyzed the outcomes of restoration projects and experiments established over four years in 55 ha of abandoned pastures dominated by invasive...
Article
Defining the reference system for restoration projects in regions characterized by complex vegetation mosaics is challenging. Misidentification of anthropogenically‐degraded grasslands or savannas as natural vegetation can lead to inappropriate restoration efforts and legislation. Here we use the Cerrado region of Brazil as an example of the import...
Article
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Recruitment in savanna environments represents a high-risk step in a plant’s life cycle. Dimorphandra mollis Benth (Fabaceae) is a savanna tree species which produces dry fruits holding coat-imposed dormant seeds dispersed late in the dry season. We investigated fire effects on fruit dehiscence, seed dormancy breaking and seed viability, and also m...
Article
Land occupation and management systems have defined fire regimes and landscapes for millennia. The savanna biome is responsible for 86% of all fire events, contributes to 10% of the total carbon emissions annually and is home to 10% of the human population. European colonization has been associated with the implementation of fire suppression polici...
Article
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Global strategies under the scope of CBD are important in guiding policies and resources for the conservation of biological diversity. This paper emphasized the need to develop actions under the Global Strategy for Plant Conservation (GSPC) with measurable results up to 2020, regarding the status and perspectives related to Targets 12 and 13, focus...
Article
The use of fire by cattle ranchers is a major source of conflict between conservationists and local communities in tropical savannas. We evaluate the role of traditional pastoral management in wildfire prevention in two protected areas within the Brazilian savanna. Fine-grain field data from transect walks and interviews were combined with geospati...
Article
Questions Indicators that can provide information during the early stages of restoration are very useful for predicting restoration outcomes. Can savanna restoration outcomes be affected by the initial functional‐group composition? Are there functional groups that, when established early, can prevent colonization by invasive grasses, trigger a succ...
Article
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Background: Invasion by African C4 grasses threatens disturbed and newly restored areas in Neotropical savannas. Allelopathy exhibited by some native species may contribute to native communities resist invasion and such native species establish in invaded areas. Aims: To establish the potential use of the Neotropical ruderal shrub Lepidaploa aurea...
Article
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Wildfires continue to cause damage to property, livelihoods and environments around the world. Acknowledging that dealing with wildfires has to go beyond fire-fighting, governments in countries with fire-prone ecosystems have begun to recognize the multiple perspectives of landscape burning and the need to engage with local communities and their pr...
Article
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The initial growth of Cerrado tree species is slow, what impairs large scale seedling production for planting. The effect of plant hormones is well known for crop species, in this study we aimed to test the effect of two commercial biostimulants on the initial growth of six native tree species widely distributed and abundant in Cerrado. We applied...
Article
Invasive alien species (IAS) threaten the stability of natural ecosystems and the persistence of several native species. Despite the known occurrence of animal IAS in Brazilian Protected Areas, the lack of systematized information impairs the planning, implementation and improvement of control actions. We identified, listed and evaluated animal inv...
Article
Finding fast-growing native species able to interfere in invasive grass species’ growth is essential to restore savannas and grasslands, where native tree growth is rather limited. We tested the phytotoxicity of Lepidaploa aurea (Mart. ex DC.) H.Rob. (Asteraceae), a native shrub from the Brazilian savanna that apparently inhibits the growth of inva...
Article
Understanding the role of the environmental drivers that determine plant population dynamics is essential to promote the conservation of target species and their habitats. Vellozia aff. sincorana is an endemic key species from the rupestrian grasslands (campos rupestres) of the Chapada Diamantina region in the Brazilian savanna (Cerrado). The branc...
Article
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RESUMO-Pela primeira vez no Brasil, queimadas prescritas de baixa intensidade no começo da estação seca foram implementadas em Unidades de Conservação (UC) do Cerrado como estratégia de manejo. Os objetivos destas queimadas são proteger áreas de vegetação sensíveis ao fogo, como mata ciliar; fragmentar e reduzir o combustível criando mosaicos de ve...
Article
Full-text available
RESUMO-Pela primeira vez no Brasil, queimadas prescritas de baixa intensidade no começo da estação seca foram implementadas em Unidades de Conservação (UC) do Cerrado como estratégia de manejo. Os objetivos destas queimadas são proteger áreas de vegetação sensíveis ao fogo, como mata ciliar; fragmentar e reduzir o combustível criando mosaicos de ve...
Article
Full-text available
Although wetlands are commonly managed with fire by local communities and managers in tropical savannas, little is known about fire behavior in these ecosystems. We measured fire intensity and temperature in 13 experimental early (June) and late (September) dry season fires in wet grasslands in the Brazilian savanna, the "Cerrado". We aimed to char...
Article
Full-text available
The veredas (palm swamps) of the cerrado biome are legally protected as áreas de Preservação Permanente (Permanent Preservation Areas), and the use of fire in these wetlands is prohibited. We carried out a preliminary assessment of environmental impacts of the local use of agricultural fire in veredas through a collaborative research project in Jal...
Article
Ethnobotany and Harvesting Impacts on Candombá (Vellozia aff. sincorana), A Multiple Use Shrub Species Endemic to Northeast Brazil: This study assessed the relationship between knowledge, use, and harvesting impacts on Vellozia aff. sincorana L.B.Sm. & Ayensu (Velloziaceae) populations. The species has a dracaenoid habit and is endemic to the Chapa...
Article
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Este estudo teve por objetivo investigar potenciais efeitos do fogo na germinação de sementes de capim-dourado (Syngonanthus nitens) (Bong.) Ruhland (Eriocaulaceae). Sementes coletadas na região do Jalapão, Tocantins, foram submetidas a choques de temperaturas de 60º, 100 ºC, 150 ºC e 200 ºC durante 1, 3 e 5 minutos. Foram feitas 5 réplicas, com 20...
Article
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This study aimed to assess the effects of fire on germination of golden-grass (Syngonanthus nitens (Bong.) Ruhland, Eriocaulaceae) seeds. Seeds collected in Jalapão (Tocantins, Brazil) were exposed to heat shock treatments at 60 °C, 100 °C, 150 °C and 200 °C, for 1′, 3′, and 5′. For each treatment and control five replications were used (20 seeds e...
Article
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Fire regimes influence and are influenced by the structure and composition of plant communities. This complex reciprocal relationship has implications for the success of plant invasions and the subsequent impact of invasive species on native biota. Although much attention has been given to the role of invasive grasses in transforming fire regimes a...
Article
Full-text available
1. Understanding how management activities impact plant population dynamics is necessary to conserve at-risk species, control invasive species and sustainably harvest non-timber forest products (NTFP). For NTFP, knowledge about how the sustainability of harvest varies by plant life-form and part harvested is limited and needed to inform management...
Article
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Harvesting Effects and Population Ecology of Buriti Palm (Mauritia flexuosa L. f., Arecaceae) in the Jalapão Region, Central Brazil. Buriti palm is used for several purposes in Jalapão, Brazil, among which harvesting of young leaves has the greatest potential impact on palm populations. This work aimed to (i) assess buriti palm uses, (ii) identify...
Article
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The sale of handcraft made from S. nitens' scapes is an important source of income in the Jalapão region, Tocantins state. Understanding seed production and dispersal periods, and germination potential is essential to management strategies that guarantee the ecological and economic sustainability of this activity. To characterize the seed productio...
Article
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The handicrafts made fromSyngonanthus nitens scapes have been an important source of income for rural communities in the Jalapão region of Brazil since the late 1990s. This study analyzedS. nitens harvest and management techniques and the economic importance of the handicrafts. We also tested the effects of harvest onS. nitens population ecology. H...
Article
Full-text available
The handicrafts made fromSyngonanthus nitens scapes have been an important source of income for rural communities in the Jalapão region of Brazil since the late 1990s. This study analyzedS. nitens harvest and management techniques and the economic importance of the handicrafts. We also tested the effects of harvest onS. nitens population ecology. H...
Article
Full-text available
Heteropterys pteropetala is a 1-2 meter height shrub characteristic from Cerrado vegetation, Brazil. Their anemochorous seeds are dispersed during the dry season (mid-May to mid-Sept). We investigated the effects of the fire season on sexual reproduction and population structure of this species in a cerrado sensu stricto at Reserva Ecológica do IBG...
Article
Full-text available
Heteropterys pteropetala is a 1-2 meter height shrub characteristic from Cerrado vegetation, Brazil. Their anemochorous seeds are dispersed during the dry season (mid-May to mid-Sept). We investigated the effects of the fire season on sexual reproduction and population structure of this species in a cerrado sensu stricto at Reserva Ecológica do IBG...

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