A5069218804- Aquatic Ecosystems and Phytoplankton Dynamics
- Marine and coastal ecosystems
- Water Quality and Pollution Assessment
- Fish biology, ecology, and behavior
- Aquatic Ecosystems and Biodiversity
- Marine Biology and Ecology Research
- Diatoms and Algae Research
- Seed Germination and Physiology
- Growth and nutrition in plants
- Soil and Water Nutrient Dynamics
- Marine and fisheries research
- Economic and Environmental Valuation
- Conservation, Biodiversity, and Resource Management
- Marine Bivalve and Aquaculture Studies
- Land Use and Ecosystem Services
- Plant tissue culture and regeneration
- Coastal and Marine Management
- Sustainable Development and Environmental Policy
- Business and Management Studies
- Protist diversity and phylogeny
- Microplastics and Plastic Pollution
- Microbial Community Ecology and Physiology
- Psychology and Mental Health
- Environmental Changes in China
- Sustainability and Climate Change Governance
Universidade Federal da Paraíba
2013-2025
Centro Hospitalar de Vila Nova de Gaia
2023
Faculdades Guarulhos
2023
Universidade Estadual da Paraíba
2013
Universidade Federal de Minas Gerais
2007
This opinion article examines the main consequences of current environmental crisis in Brazil, including dismantling policies and protection conservation areas, absence mitigation measures for disasters, loosening pesticides regulation, among others. All have been accompanied by a reduction research investments popular participation several committees, as well weakening monitoring. Government may negative on aquatic terrestrial ecosystems. The consequential degradation compromises provision...
The Andalusian International University held a workshop entitled Temporary wetlands' future in drylands under the projected global change scenario March 2020 Baeza, Spain, with 26 participants from 10 countries. objectives were to promote international cooperation and scientific exchange on conservation protection of temporary wetlands. highlighted extreme conditions that permanent wetlands, ponds, shallow lakes are currently facing predicted dismal for these systems due climate change. To...
<title>Abstract</title> Saline lakes are hypersensitive to changes in their water balance and therefore show amplified responses climatic land-use catchment. However, despite the resulting, often dramatic ecological consequences, saline rank low on policy agendas as they assumed support few ecosystem services levels of biodiversity. Here, we challenge this view evaluate threatened species 84 distributed across globe. We found that harbour not only aquatic biota but also a diverse range...
Drought is an important driver of change in aquatic ecosystems and generally acts as a filter to select biological traits capable persisting under severe environmental circumstances. Drylands are highly vulnerable climate increases variability. Consequently, increase the processes eutrophication, salinization, habitat desiccation may be observed response loss hydrological connectivity. The International Network on Limnology (INLD) was created with overall goal understanding functioning...
Aim: This study analyzed the vertical distribution of phytoplankton functional groups in two diel cycles a warm monomictic shallow tropical lake; Methods: Sampling abiotic variables, and zooplankton communities was performed at intervals 3 hours over 24 profiles, stratification (February) circulation (July) periods; Results: The high thermal stability partial atelomixis favored coexistence that are sensitive to destratification, N A F, composed by desmids Chlorophyceae coccoids, S2 Lo, which...
Temporary lentic waters, those which alternate wet and dry periods, are globally distributed highly prevalent on Earth can be classified according to their hydroperiod. We used a scientometric perspective, summarize the knowledge about temporary ecosystems in 19 Latin American Caribbean countries. conducted topic search Web of Science (WoS) using various keyword combinations hydroperiod type (temporary, ephemeral, intermittent, episodic seasonal), aquatic ecosystem (wetland, pond, pool, lake...
The Galapagos Archipelago - due to its remoteness, isolation, recent volcanic origin, and endemic fauna flora is iconic for inspiring Darwin's evolutionary theory. Since day researchers have focused on the Archipelago's terrestrial marine species. Its location in an important climate regulating body of water, coupled with a low level human activity most history, attracted several paleolimnologists inland waters Archipelago. Studies many lagoons, crater lakes, other were mainly support...
O presente trabalho teve como objetivo caracterizar e estudar o comportamento germinativo das sementes de Bauhinia variegata L. var. candida variegata, forficata Link forficata. delineamento foi inteiramente casualizado, com 4 repetições. Os tratamentos utilizados em foram: água a 97 ºC até esfriar, 70 durante 1 2 minutos, ácido sulfúrico 1, 3 escarificação mecânica intactas (controle); forficata, mecânica, imersão 5 10 armazenamento seis meses, minutos recém-colhidas (controle). Tratamento...
The dominance of desmids in tropical monomictic lakes (SE Brazil)Disturbance is a concept used to explain the structure communities.This emphasizes effects disturbance on "break" biomass stability stable environments and opportunities for development other species.The major disturbances natural warm include contrasting seasonal changes long-term thermal stability, as well short-term mixing layer.This study investigated abiotic environmental factors desmids, based samples collected monthly...
Introduction: La Segua is an important wetland in Ecuador, recognized as a Ramsar site and of great ecological relevance. Currently, threatened by human pressures unsustainable landscape use associated with agriculture aquaculture. This study the first approach to occurrence suspended microplastics (SMPs) Ecuadorian lentic waterbody estimated potential threat these on filter suspension feeders aquatic food webs. Methods: Surface water samples were collected at 16 sampling points analyze...
The hydrological periods drive the structure and organization of aquatic communities in semiarid regions. We hypothesize that a decrease precipitation during dry period will favor development periphytic algal community, leading to higher richness density this period. To test hypothesis, we investigated changes community three shallow eutrophic ecosystems Brazilian semiarid. sampling was performed between 2007 2010 at two-mensal intervals. macrophytes rocks. abiotic variables were analyzed...
Luciana Gomes Barbosaa* , Rafael Machado de Araújo Alvesa, João Paulo Oliveira Santosa, Maria Cristina Santos Pereira Araújoa & Ênio Wocyli Dantasb a Limnology Laboratory, Plant Technology and Environmental Sciences Department, Center for Agrarian Sciences, Federal University of Paraíba, Areia, Brazilb Botany Biology Biological Applied Social State Pessoa, Brazil
ABSTRACT The species of the Urochloa genus, exotic and infesting in Brazilian waters, are known to be invasive dominant, occupying from humid, shallow areas, irrigation canals margins deep reservoirs. This paper hypothesis that less depth reservoirs have higher infestation rate biomass U. arrecta. objectives were measure percentage occurrence macrophyte arrecta 40 ecosystems Mamanguape basin (Paraíba, Brazil) determine two acquired data geo-referenced with ArcGIS software (v. 9.3). A...
Pigmented Euglenophytes in a natural and shallow lake the semiarid region of Paraíba State, Brazil).A floristic survey class Euglenophyceae Panati Lake (7°11'14" S 36°49'52" W) is presented.The samples were collected between November 2005 April 2007 along margins lake, total 29 taxa collected, described, illustrated, comprising 11 specifics 18 infraspecifics, with five typical 13 non-typical varieties.The genus Trachelomonas showed greatest richness (13 taxa), followed by Lepocinclis (seven...
AIM: chemical stratification and the patterns of light limitation nutrients two natural lakes, one shallow other deep, were comparatively evaluated, both lakes located in southeast Brazil. METHODS: pH, electrical conductivity, dissolved oxygen, total solids monthly collected during 5 consecutive years at vertical profile lakes. RESULTS: multivariate analysis indicated that long thermal period favored occurrence However, deeper lake stratified with high hypolimnetic nutrient concentration,...
Phytoplankton functional groups structure and species abundance vary according to environmental conditions. The present study investigated the natural anthropogenic stressors that affect phytoplankton group biomass in a Brazilian semiarid region reservoir (Argemiro de Figueiredo reservoir). Sampling occurred between August 2007 July 2009 on bi-monthly basis for first year, monthly last two years. There were three collection points (PC: river confluence; PNC: near cages; PD: dam site). water...
Abstract Aim To evaluate the structure and dynamics of functional phytoplankton groups (FGs) over a macrophyte cover gradient their relations with environmental variable in small, shallow clear-water lake. Methods Physical, chemical analyses were made between August 2014 June 2015 at three points on Santa Lucia lake (Paraiba, Brazil). Tukey Wilcoxon tests applied to data followed by CCA Anova. Results The submerged biomass presented high spatial temporal uniformity. increase rainfall induced...