Results 11 to 20 of about 89,971 (165)
Introducción y objetivos: El cambio climático, el ganado y el creciente uso turístico favorecen la dispersión de plantas exóticas, amenazando la conservación de los ecosistemas altoandinos.
María Alisa Alvarez +4 more
doaj +3 more sources
O presente estudo descreve um gradiente florístico de uma cronosequência de florestas secundárias do Nordeste Paraense, a partir de 19 sítios de diferentes idades, avaliados em diferentes anos.
Shirley Soares Prata +4 more
doaj +1 more source
Sedimentología e Icnología de deltas fluvio-dominados afectados por descargas hiperpícnicas de la Formación Lajas (Jurásico Medio), Cuenca Neuquina, Argentina [PDF]
En las áreas de Portada Covunco y Sierra de la Vaca Muerta, la Formación Lajas representa una sucesión deltaica fluvio-dominada integrada por depósitos de prodelta y frente deltaico, afectados por descargas hiperpícnicas y reelaborados por acción de ...
Bournod, Constanza Naimé +6 more
core +3 more sources
A região de Carajás (constituída principalmente das cidades de Marabá, Parauapebas, Curionópolis, Canaã dos Carajás e Eldorado dos Carajás) no estado do Pará e a região de São Luís no estado do Maranhão são os polos mais importantes para a companhia Vale
Giordani Rafael Conceicao Sodre +4 more
doaj +1 more source
Survey of El Nino 1957-58 in its relation to tropical pacific meteorology [PDF]
ENGLISH: The survey aims at demonstrating the close relationship between anomalies of sea temperature observed along the tropical Pacific coast of the Americas and those observed in the oceanwide tropical belt. The survey also covers the variations, from
Bjerknes, Jacob
core
When honeybees come to town: Critical aspects of urban beekeeping and opportunities for regulation
Abstract Urban areas are increasingly valued for their role in conserving wild pollinators. Honeybees are often regarded as ambassador species for pollinator conservation, and beekeeping is frequently perceived as a pro‐biodiversity activity, which has become highly popular in urban areas.
Joan Casanelles‐Abella +5 more
wiley +1 more source
Antecedentes: Las plantas en ecosistemas áridos exhiben adaptaciones a las sequías periódicas, más frecuentes e intensas por el cambio global. Conocer los atributos ecofisiológicos en las especies, ayudará a entender sus adaptaciones a las limitaciones ...
Enrique Martínez-Núñez +7 more
doaj +1 more source
Influence of the Azores high on sea level pressure and wind, and on precipitation, in the Eastern Tropical Pacific Ocean [PDF]
ENGLISH: Intensification of the Azores high pressure cell in mid-year, with concomitant air flow from the Caribbean into the Pacific, is shown to be responsible for a secondary minimum of precipitation observed along the tropical Pacific coast of the ...
Bennett, Edward B.
core
Representation of obligate groundwater‐dwelling copepod diversity in European protected areas
Abstract Groundwaters sustain diverse surface ecosystems and are populated by metazoan species, mostly invertebrates, that provide fundamental ecological functions and are often of prominent conservation value due to narrow endemism and high phylogenetic rarity.
Francesco Cerasoli +7 more
wiley +1 more source
Objetivou-se com este trabalho avaliar o comportamento fisiológico de diferentes grupos genéticos de caprinos mediante respostas fisiológicas da temperatura retal, freqüência cardíaca e freqüência respiratória, e do gradiente entre temperatura retal e ...
Expedito Danusio de Souza +5 more
doaj +1 more source

