Results 61 to 70 of about 14,272 (263)

Portulaca abscondita (Portulacaceae, Caryophyllales), a new microendemic species from Monte Azul, Minas Gerais, Brazil

Nordic Journal of Botany, EarlyView.
Portulaca (Portulacaceae) is a cosmopolitan genus with centers of diversity in Africa and South America. In Brazil, 22 species are recognized, most occurring in xerophytic environments of the Cerrado, particularly in Campos Rupestres. These rocky montane habitats, especially in northern Minas Gerais state, remain undercollected despite their high ...
Danilo Alvarenga Zavatin, Renato Ramos, Jefferson Prado, Angélica Quintanar Castillo, Maria Guadalupe Carvalho Fernandes, Daniela Boanares, José Roberto Ferraz, Thaíla Vieira Alves dos Santos   +7 more
wiley   +1 more source

Sinningia pampeana sp. nov. (Gesneriaceae) from the Pampa's rocky outcrops in southern Brazil and Uruguay

Nordic Journal of Botany, EarlyView.
Sinningia pampeana is a new rupicolous species from the rocky outcrops of the Pampa biome in southern Brazil and Uruguay. Morphological analyses based on herbarium material, field observations, and detailed illustrations support its recognition as a distinct species from Sinningia sellovii.
Gabriel Emiliano Ferreira, Daniel Alves Spiazzi, Pedro Henrique Sonsim Barbieri, Alain Chautems, Andréa Onofre Araújo   +4 more
wiley   +1 more source

Efectos de la infección aguda por diferentes cepas de Trypanosoma cruzi en efecto de ratas

Revista Científica, 2010
En el presente estudio se analizó el desarrollo intrauterino de los fetos de ratas Wistar, que recibieron una inyección por vía intraperitoneal de 2x105 tripomastigotes sanguícolas de las cepas Planalto (IP1) y ASM (IP2) de Trypanosoma cruzi.
Ana Lugo de Yarbuh, Sonia Araujo, Maritza Alarcón, Elio Moreno, Antonio de Ascenc ío, Hernán Carrasco   +5 more
doaj  

Pacific decadal oscillation and ENSO forcings of northerly low-level jets in South America

npj Climate and Atmospheric Science
The hydrological cycle in South America during austral summer, including extreme precipitation and floods, is significantly influenced by northerly low-level jets (LLJs) along the eastern Andes.
Ye Mu, Charles Jones, Leila M. V. Carvalho, Lulin Xue, Changhai Liu, Qinghua Ding   +5 more
doaj   +1 more source

A plant–pollinator invasional meltdown: the Japanese pagoda tree Styphnolobium japonicum facilitates the invasion of the giant resin bee Megachile sculpturalis

Oikos, EarlyView.
An invasional meltdown can occur when a non‐native species facilitates the spread of another non‐native species in the invaded area, increasing its likelihood of survival or its ecological impact. Plant–pollinator systems pose an exceptional study system to test this concept, which remains poorly known.
Daniel Echeandía, Jordi Margalef‐Marrasé, Marc Riera, Jordina Belmonte, Julia Lanner, Sonja Mader, David Navarro, Ricardo Caliari Oliveira, Rut Puigdemunt, Carlos Hernández‐ Castellano   +9 more
wiley   +1 more source

Síndrome del acento extranjero secundario a lesión cerebral del área del lenguaje: reporte de un caso

Revista GICOS
El síndrome del acento extranjero (SAE), es un trastorno del lenguaje poco frecuente, manifestado en una alteración del parénquima cerebral que modifica el patrón del habla propio de la lengua nativa, para ser percibida como extranjera. Las causas se ven
María Alejandra del Valle Pérez-Pulido, Jean Josue Ramírez-Zambrano, José Miguel Ortiz Tovar   +2 more
doaj   +1 more source

Where Have I Seen You Before? Networks, Trust and Reciprocity as a Source of Collaboration in the Public Service

Public Administration and Development, EarlyView.
ABSTRACT Although some studies focus on how bureaucrats' interactions with one another affect performance, they rarely focus on why these public servants collaborate. Bureaucrats' collaboration matters because it can significantly contribute to achieving policy goals.
Nathalie Mendez
wiley   +1 more source

AREAS OF ENDEMISM IN THE SOUTHERN CENTRAL ANDES

Darwiniana, 2012
This paper analyzes the distribution of vascular plants species endemic to the southern central Andes (south-western Bolivia and north-western Argentina). All 540 species endemic to the study regions (approx. 720600 km2 ) have been included in the analysis.
Aagesen, Lone, Bena, María Julia, Nomdedeu, Soledad María, Panizza , Adela Maria, López, Ramiro P., Zuloaga, Fernando Omar   +5 more
openaire   +2 more sources

Engaging the public in plant science: Communication facilitators and barriers of scaling up a citizen science campaign

People and Nature, EarlyView.
Abstract Volunteers have been involved in nature observations for decades through citizen science initiatives, providing large data sets as well as problem identification that allow a more complete understanding of many natural phenomena. Although communication is a core component in citizen science, the key factors that determine its effectiveness in ...
Kristiina Gibson, Monika Suškevičs, Baiba Prūse, Marta Barberis, Sara A. O. Cousins, Živa Fišer, Margaux Julien, Marianne Kivastik, Marcin Klisz, Attila Lengyel, Zuzana Münzbergová, Radosław Puchałka, Iris Reinula, Froukje Rienks, Julie Koch Sheard, Viktor Siverin, Bojana Stojanova, Sabrina Träger, Tsipe Aavik   +18 more
wiley   +1 more source

Digital fire technologies and community networks: Cultivating just sociotechnical practices for living with planetary change

People and Nature, EarlyView.
Abstract Fires are expanding in frequency and intensity worldwide due to climate change and land‐use transformations. At the same time, fire often plays a regenerative role in ecosystems. Traditional and cultural practices incorporate fire use for landscape management and landscape renewal. In this complex matrix of fire ecologies, digital technologies
Jennifer Gabrys, Paula Tiara Torres, Pablo González Rivas   +2 more
wiley   +1 more source