Simone Varandas

Simone Varandas
Universidade de Trás-os-Montes e Alto Douro | utad · Departamento de Ciências Florestais e Arquitetura Paisagista

PhD

About

133
Publications
58,729
Reads
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3,322
Citations
Introduction
Simone Varandas currently works at the Departamento de Ciências Florestais e Arquitetura Paisagista, Universidade de Trás-os-Montes e Alto Douro. Simone does research in Environmental Science and Water Science. Their current project is 'FRESHCO - Multiple implications of invasive species on Freshwater Mussel coextinction processes.'.
Additional affiliations
October 2006 - present
Universidade de Trás-os-Montes e Alto Douro
Position
  • Auxiliar Professor
Education
January 1999 - October 2006
Universidade de Trás-os-Montes e Alto Douro
Field of study
  • Agricultural Sciences - Forestry Sciences
October 1994 - July 1996
Universidade de Trás-os-Montes e Alto Douro
Field of study
  • Agricultural Sciences / Forest Science
October 1987 - July 1992
Universidade de Trás-os-Montes e Alto Douro
Field of study
  • Agricultural Sciences / Forest Science

Publications

Publications (133)
Article
Full-text available
Throughout the last decades, the increasing pressure of anthropogenic (climate and land-use) changes has been a major impact on biodiversity in several regions and habitat types. These drivers have disturbed the timing of reproduction in animals and plants as well as the migration of animals resulting in changes in population size and species distr...
Article
1. Pseudunio marocanus (Pallary, 1918) is an endemic species of Morocco and is considered one of the world's 100 most threatened species. The life cycle of this critically endangered freshwater mussel remains unknown. However, knowledge about the discharge period of its larvae and its ecological fish hosts is crucial to adopt more effective conserv...
Article
Full-text available
Theidentification of key biodiversity areas (KBA) was initiated by the International Union for Conservation of Nature in 2004 to overcome taxonomic biases in the selection of important areas for conservation, including freshwater ecosystems. Since then, several KBAs have been identified mainly based on the presence of trigger species (i.e., species...
Article
Full-text available
Droughts can change the distribution and alter the behaviour, phenology and physiology of many species, leading in extreme cases to high mortalities or even extirpation. In this study, a before/after comparison was performed in two Portuguese river basins (Rabaçal and Tuela) to assess the possible effects of an extreme drought on the abundance and...
Article
Full-text available
The Paiva River is considered one of the least polluted rivers in Europe and its watershed has a high conservation value. However, the Paiva River basin suffers pressures related with recurrent disturbances in land use, such as forest fires, agricultural activities, urbanization and pressures that affect the natural hydromorphological conditions an...
Book
Full-text available
Projetos apresentados à Fundação para a Ciência e Tecnologia, de conclusão das Bolsas de Inicio à Investigação atribuídas aos formandos da Escola de Verão “EcoCampus Living Lab - Educação para o Desenvolvimento Sustentável”
Article
• Freshwater mussels (Order Unionida) are highly threatened. Interspecific competition for food sources with invasive alien species is considered to be one of the factors responsible for their decline because successful invaders are expected to have wider trophic niches and more flexible feeding strategies than their native counterparts. • In this...
Article
Anthropogenic freshwater habitats may provide undervalued prospects for long‐term conservation as part of species conservation planning. This fundamental, but overlooked, issue requires attention considering the pace that humans have been altering natural freshwater ecosystems and the accelerated levels of biodiversity decline in recent decades. We...
Article
Full-text available
The inappropriate use of antibiotics, one of the causes of the high incidence of antimicrobial-resistant bacteria isolated from aquatic ecosystems, represents a risk for aquatic organisms and the welfare of humans. This study aimed to determine the antimicrobial resistance rates among riverine Aeromonas spp., taken as representative of the autochth...
Article
Full-text available
One of the most widespread aquatic organisms in the rivers and estuarine ecosystems, in the world, is Asian clam Corbiculafluminea. This clam, that can adapt to environmental changes, is an invasive species in several areas and it was adopted as a model for toxicity tests. This study evaluated the effects of the exposure to cadmium (Cd), to micropl...
Article
• Freshwater ecosystems are essential to human well‐being and most have high biodiversity. However, this biodiversity has been suffering severe declines owing to the expansion of human activities. Protected areas (PAs) are essential for biodiversity conservation and have proved to be successful in stopping species extirpation if managed properly. U...
Chapter
Although biodiversity is considered a value to be protected to avoid the degradation of ecosystem functions, conservation practices ignore the role of many species. Species are not protected according to their degree of risk, but according to their degree of attractiveness. The so-called iconic species are used as flag species to convince the publi...
Article
The Unionidae represent an excellent model taxon for unravelling the drivers of freshwater diversity, but, phylogeographic studies on Southeast Asian taxa are hampered by lack of a comprehensive phylogeny and mutation rates for this fauna. We present complete female- (F) and male-type (M) mitogenomes of four genera of the Southeast Asian clade Cont...
Article
Water management is a crucial tool for addressing the increasing uncertainties caused by climate change, biodiversity loss and the conditions of socioeconomic limits. The multiple factors affecting water resources need to be successfully managed to achieve optimal governance and thus move towards water security. This study seeks to obtain a holisti...
Article
Full-text available
The Paiva River catchment, located in Portugal, integrates the Natura 2000 network of European Union nature protection areas. Resorting to topography, climate and land-use data, a semi-distributed hydrological model (Hydrological Simulation Program-FORTRAN) was run in order to simulate the hydrological cycle of the river and its tributaries. The mo...
Article
Full-text available
The number of non-native freshwater fishes in the Iberian Peninsula has been greatly increasing. In this study, individuals of the genus Phoxinus were detected in 18 out of 138 stream sites sampled across the Douro Basin in 2017 and 2018. A total of 26 individuals were barcoded using partial cytochrome c oxidase subunit I (COI) and cytochrome b (cy...
Article
Full-text available
Freshwater mussels are a critically imperiled group of mollusks that play key ecological roles and provide important services to humans. The Ambleminae is the only subfamily of these mussels, endemic to North America. Complete mitogenomes have only been sequenced for two of five tribes of the subfamily. Pleurobema oviforme, Amblema plicata, and Pop...
Article
Freshwater bivalves are highly threatened and globally declining due to multiple anthropogenic impacts, making them important conservation targets. Because conservation policies and actions generally occur at the species level, accurate species identification and delimitation is critical. A recent phylogenetic study of Italian mussel populations re...
Article
1. Coextinction is the simplest form of secondary extinction and freshwater mussels (Bivalvia, Unionida) may be particularly prone to this phenomenon as their life cycle includes an obligatory parasitic larval stage on fish hosts. 2. The main aims of this study were to determine the possible ecological fish hosts of Anodonta anatina (Linnaeus, 175...
Article
Full-text available
Using a new fossil-calibrated mitogenome-based approach, we identified macroevolutionary shifts in mitochondrial gene order among the freshwater mussels (Unionoidea). We show that the early Mesozoic divergence of the two Unionoidea clades, Margaritiferidae and Unionidae, was accompanied by a synchronous split in the gene arrangement in the female m...
Article
Freshwater mussels are undergoing rapid global declines due to habitat loss and fragmentation, but little is known about the effects of small hydropower plants. Here we assessed the impact of small hydropower plants on the abundance and size structure of the imperilled pearl mussel Margaritifera margaritifera. For this, we sampled 66 sites in three...
Article
Full-text available
We report for the first time that the freshwater mussel Microcondylaea bonellii (Férussac, 1827) functions as a suitable host for the European bitterling Rhodeus amarus (Bloch, 1782). Given the recent expansion of R. amarus in Europe, the possible physiological cost (e.g. competition for oxygen, reduction in water circulation, and consequent impair...
Preprint
Full-text available
Freshwater bivalves are highly threatened and globally declining due to multiple anthropogenic impacts, making them important conservation targets. Because conservation policies and actions generally occur at the species level, accurate species identification and delimitation is critical. A recent phylogenetic study of Italian mussel populations re...
Article
Due to their sensitivity and dramatic declines, freshwater mussels are prime targets for conservation and environmental monitoring. For this, however, information is needed on life history and ecological traits, which is lacking in many taxa, including threatened species. Species recently described or recognized as valid are of particular concern,...
Article
Full-text available
1. The life cycle of Unio foucauldianus Pallary, 1936, a critically endangered freshwater mussel species (Bivalvia: Unionida), includes a parasitic phase using fish as hosts. Therefore, to develop more efficient conservation strategies it is essential to know which are the suitable fish hosts of U. foucauldianus. 2. In this study, two approaches we...
Conference Paper
Full-text available
Over a decade after the publication of the Millennium Ecosystem Assessment an increasing number of ES modeling applications from local to global scales have been created. ALICE, Improving the management of Atlantic Landscapes: aCcounting for bIodiversity and eCosystem sErvices,is a project that will develop a comprehensive package of new methods, t...
Presentation
Full-text available
Over a decade after the publication of the Millennium Ecosystem Assessment an increasing number of ES modeling applications from local to global scales have been created. ALICE, Improving the management of Atlantic Landscapes: aCcounting for bIodiversity and eCosystem sErvices,is a project that will develop a comprehensive package of new methods, t...
Conference Paper
Full-text available
Engaging communities into ecosystem services – Valuing Blue and Green Infrastructures in Atlantic landscapes Vanessa Queirós1, João Cabral1,2, André Fonseca1,2, Martinho Lourenço1, Simone Varandas1,2, João Santos1,2, José Aranha1,2, Mário Santos1,2, Sandra M. Monteiro1,2, Rui Cortes1,2, Luis F. Fernandes1,2, Fernando Pacheco1, João Paulo Moura1,2,...
Article
Anthropogenic habitats may function as a refuge for some species, including freshwater mussels (Bivalvia, Unionida). In this study we assessed possible differences in density, size and condition index of the Moroccan freshwater pearl mussel Pseudunio marocanus (Pallary, 1918), formerly Margaritifera marocana, colonizing an-thropogenic (sāqya = irri...
Article
Anthropogenic habitats may serve as a refuge for aquatic species, including freshwater mussels (Bivalvia, Unionida). Evaluating the role of anthropogenic habitats is a fundamental, but still ignored, conservation issue given the pace that humans have been converting natural ecosystems. In this study, possible differences in abundance, size and cond...
Article
Full-text available
The complete mitogenomes of one (M-)ale (North America), one Hermaphroditic (Europe), and two (F-)emale (North America and Europe) individuals of the freshwater pearl mussel Margaritifera margaritifera were sequenced. The M-type and F-type (Female and Hermaphroditic) mitogenomes have 17,421 and 16,122 nucleotides, respectively. All with the same co...
Article
Gill histopathology is a valuable tool to evaluate ecosystems health, because the gill is a key site of waterborne pollutant uptake and the first target organ to their toxicity. Consequently, this makes it important in biomonitoring programs. This study aims to evaluate gill histopathological differences in Douro basin native fish species and deter...
Article
The freshwater pearl mussel Margaritifera margaritifera is a highly threatened species in Europe. Several mechanisms may be responsible for the decline in distribution and abundance of European pearl mussel populations, but almost no quantitative data exists about the possible negative impacts of invasive alien species (IAS). In this study, we clea...
Article
Freshwater mussels are declining globally, and effective conservation requires prioritizing research and actions to identify and mitigate threats impacting mussel species. Conservation priorities vary widely, ranging from preventing imminent extinction to maintaining abundant populations. Here, we develop a portfolio of priority research topics for...
Presentation
Full-text available
ALICE, Improving the management of Atlantic Landscapes: accouting for bIodiversity and eCosystem sErvices,will develop a comprehensive package of new methods, tools and procedures to identify barriers to the delivery of benefits from Blue and Green Infrastructures (BGI) implementation and to improve the characterization of biodiversity and the valu...
Article
• Droughts may be responsible for important ecological impacts in freshwater ecosystems, including the death of rare species. • This study assessed the mortality of the endangered pearl mussel Margaritifera margaritifera (Linnaeus, 1758) in the Mente, Rabaçal and Tuela rivers (north west of the Iberian Peninsula) during the extreme summer drought o...
Article
Freshwater bivalves have suffered major global declines, being the introduction of invasive alien species (IAS) an important, but not well studied, mechanism of threat. This study assessed the predator-prey relationship between two non-native crayfish species (Procambarus clarkii and Pacifastacus leniusculus) and three native (Anodonta anatina, Pot...
Article
This study focused on the use of sound playbacks as acoustic deterrents to direct native potamodromous migratory species away from all kind of traps. The effects of two acoustic treatments, a repeated sine sweep up to 2 kHz (sweep‐up stimulus) and an intermittent 140 Hz tone, were tested in three fish species native to Iberia: Salmo trutta, Pseudoc...
Data
Historical biogeography of the Margaritiferidae inferred from three different statistical modeling approaches
Data
List of fossil calibrations that were used in BEAST analyses
Data
Gene map of the F-type mitochondrial genome of Gibbosula crass
Data
Specimens examined for conchological and anatomical features
Data
Best-fit models of nucleotide substitution for each partition
Data
List of characteristic examples of fossil records supporting the primary phylogenetic clades
Data
Margaritiferidae generic names, authorities, and type species
Data
Diversification rate statistics for the Margaritiferidae and Unionidae clades
Article
Two Unionida (freshwater mussel) families are present in the Northern Hemisphere; the Margaritiferidae, representing the most threatened of unionid families, and the Unionidae, which include several genera of unresolved taxonomic placement. The recent reassignment of the poorly studied Lamprotula rochechouartii from the Unionidae to the Margaritife...
Article
Full-text available
1. The freshwater pearl mussel Margaritifera marocana (Pallary, 1918) is an endemic species of Morocco being listed as critically endangered and it stands among the world 0 s 100 most threatened species. An extensive survey was performed in the Sebou basin (total area of approximately 40,000 km 2), covering 26 different sites. Margaritifera marocan...
Article
The impacts of river damming on aquatic fauna are assessed and then integrated across hierarchical scales, portrayed as nested circles. The outer circles characterize the studied site for habitat disturbance and hydrologic regime during the construction and filling phases. The inner circles characterize the construction and filling phase zones for...
Article
Full-text available
Freshwater mussels of the order Unionida have been dramatically declining globally. Despite their ecological importance, conservation of these animals has been hindered by unresolved taxonomy and a lack of data on the distribution and status of populations, especially in southern Europe. Although the Italian Peninsula has been noted as a centre of...
Article
Blooms of cyanobacteria (Microcystis aeruginosa) are becoming increasingly recurrent in the A Baxe dam reservoir (Galícia, Northern Spain) as a result of increasing levels of different anthropogenic pressues in the Umia catchment. The aim of this study is to develop a model that allows us to detect the spatial level where the main problems that tri...
Article
Full-text available
The unionid family Margaritiferidae, comprising 12 extant species, is widely distributed across the northern hemisphere in North America, Europe and Asia (Bolotov et al., 2016). Most species in this family have dramatically declined over the last century, with nine out of the 12 species assessed as threatened in the most recent IUCN Red List (IUCN,...
Article
Full-text available
The unionid family Margaritiferidae, comprising 12 extant species, is widely distributed across the northern hemisphere in North America, Europe and Asia (Bolotov et al., 2016). Most species in this family have dramatically declined over the last century, with nine of the 12 species assessed as threatened in the most recent IUCN Red List (IUCN, 201...
Article
The natural variation of environmental factors in freshwater basins determines their biodiversity. Among them, calcium is a key physiological compound for freshwater invertebrates. It is required for shell formation, muscle contraction, it mediates gene expression and allows counteracting acidosis during stress periods, among other functions. Altho...
Article
Full-text available
Freshwater mussels of the Order Unionida provide important ecosystem functions and services, yet many of their populations are in decline. We comprehensively review the status of the 16 currently recognized species in Europe, collating for the first time their life-history traits, distribution, conservation status, habitat preferences, and main thr...
Article
Freshwater mussels of the order Unionida are key elements of freshwater habitats and are responsible for important ecological functions and services. Unfortunately, these bivalves are among the most threatened freshwater taxa in the world. However, conservation planning and management are hindered by taxonomic problems and a lack of detailed ecolog...