A5082887273- Soil erosion and sediment transport
- Geological formations and processes
- Geology and Paleoclimatology Research
- Coastal wetland ecosystem dynamics
- Hydrology and Sediment Transport Processes
- Geography and Environmental Studies
- Silicon Effects in Agriculture
- Pleistocene-Era Hominins and Archaeology
- Marine Sponges and Natural Products
- Pacific and Southeast Asian Studies
- Rural Development and Agriculture
- Aquatic Ecosystems and Phytoplankton Dynamics
- Urban Development and Societal Issues
- Migration, Racism, and Human Rights
- Cassava research and cyanide
- Fish biology, ecology, and behavior
- Coral and Marine Ecosystems Studies
- Geochemistry and Geologic Mapping
- Banana Cultivation and Research
- Water Quality and Pollution Assessment
- Agricultural and Food Sciences
- Phytochemistry Medicinal Plant Applications
- Hydrology and Watershed Management Studies
- Flood Risk Assessment and Management
- Crustacean biology and ecology
University of Kentucky
2019-2025
Twin Cities Spine Center
2025
University of Minnesota
2025
Twin Cities Orthopedics
2025
Universidade Estadual de Maringá
2014-2020
Universidade de São Paulo
2019
Universidade Estadual do Paraná
2015-2019
Instituto de Pesquisas Ecológicas
2019
<p>Phytolith counting and detailed phytolith extraction.</p>
<p>Phytolith counting and detailed phytolith extraction.</p>
Building resilience to climate change in the Afrotropics hinges on accurately predicting style and tempo of ecosystem responses. Paleoecological records offer valuable insights into vegetation dynamics, yet high-resolution data sets remain scarce Africa. Here, we present a new radiocarbon-dated sediment core from Lake Tanganyika, capturing terrestrial responses hydroclimate variability fire activity during Common Era. Phytolith macrocharcoal reveal oscillations between grasslands woodlands...
Dam installation on a deep hydrologically open lake provides the experimental framework necessary to study influence of outlet engineering and changing base levels limnogeological processes. Here, high-resolution seismic reflection profiles, sediment cores, historical water level elevation datasets were employed assess recent depositional history Jackson Lake, dammed glacial located adjacent Teton fault in western Wyoming (USA). Prograding clinoforms imaged shallow stratigraphy indicate...
Shallow lakes in tropical floodplains provide significant ecosystem services that can be altered by natural and anthropogenic forces. Despite their importance, little is known about the infill patterns timescales magnitude of these changes floodplain lakes. Here, we present a global meta-analysis sediment core-derived accumulation rate data for shallow lowlands to quantify basin infill. Environmental variables (e.g., rates, bathymetry, surface area) were compiled from literature or derived...
Cerrado vegetation is associated with the semi-humid climate of Central Brazil highlands.The presence this in small and sparse areas Paraná, Southern Brazil, can be its past conditions.Paleoenvironmental changes Campo Mourão region (24º06'S -52º23'W) are discussed study.The environmental were characterized using proxy data that includes stable isotopes phytolith analyses peaty sediments.Two drill cores obtained alluvial plains analyzed.Results compared isotopic record (δ¹³C) from a trench...
Freshwater sponges (Porifera: Spongillida) are sessile invertebrates with skeletons composed of siliceous elements termed spicules. Sponge spicules (megascleres, microscleres, and gemmuloscleres) characterized by widely varying sizes shapes. These well-preserved in lacustrine, wetland, riverine sediments hold significant ecological limnological information that can be applied as diagnostic tools reconstructions Quaternary environments. However, problems taxonomy the absence systematic...
São aqui apresentados os resultados de um estudo analítico sobre as pesquisas com fitólitos, corpos micrométricos opala biogênica precipitados nos tecidos vegetais, produzidas no Brasil até junho 2013. As fitólitos são recentes e tem aumentado consideravelmente últimos anos. Desta forma, o presente trabalho por objetivo introduzir futuros pesquisadores estágio atual das esse tema. Como metodologia pesquisa foi utilizado buscador periódicos da CAPES, bem como informações para monografias...
Middle and Late Holocene sediments have not been extensively sampled in Lake Tanganyika, much remains unknown about the response of Rift Valley’s largest lake to major environmental shifts during Holocene, including termination African Humid Period (AHP). Here, we present an integrated study (sedimentology, mineralogy, geochemistry) a radiocarbon-dated sediment core from Kavala Island Ridge (KIR) that reveals paleoenvironmental variability Tanganyika since with decadal centennial resolution....
Skeletal remains of freshwater sponges are important microfossils that may be preserved in the sediments inland waters, but much is still unknown about sponge fauna Nearctic, which limits their use paleoenvironmental reconstructions. Here, we report first evidence an extant Jackson Lake, Grand Teton National Park, Wyoming (USA). Two species were identified living shallow littoral and shoreline environments: Eunapius fragilis (Leidy 1851 Leidy J. 1851. On Spongilla. Proc Acad Nat Sci Phila....
Zonas de confluência são marcadas pela forte interação matéria e energia canais com características distintas se apresentam como ambiente único no contexto da bacia drenagem. No caso do Pantanal, a incidência sazonal dos pulsos inundação contribui para maior dinâmica entre os fluxos até então sem estudos esse espectro. Nesse sentido, foram executadas duas campanhas, na vazante (novembro 2015) outra cheia (abril 2016), finalidade caracterizar hidrodinâmica zona uso sonda Acoustic Doppler for...
Foi caracterizado os sedimentos turfosos da planície dos rios Água Papagaios e Ranchinho no município de Campo Mourão, PR. Para tanto, foram determinados: a) a datação absoluta (14C); b) caracterização via escala von Post; c) o percentual queima do material, sólido volátil d) determinação granulométrica sedimento. Os depósitos rio apresentaram idades entre ~7.280 anos cal AP. (75 cm) ~3.280 (45 cm), portanto formada durante Holoceno. Por sua vez depósito apresentou mais antigas, ~48.800±270...