Results 11 to 20 of about 89,971 (165)

Distribución de plantas nativas y exóticas a lo largo de gradientes de elevación en senderos de montaña en los Andes de Mendoza, Argentina

open access: yesBoletín de la Sociedad Argentina de Botánica, 2023
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

Gradiente florístico das florestas secundárias do Nordeste Paraense Floristic gradient of the northeast Paraense secondary forests

open access: yesActa Amazonica, 2010
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]

open access: yes, 2015
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

TELECONEXÕES OCEÂNICAS NOS PADRÕES CLIMATOLÓGICOS DA AMAZÔNIA ORIENTAL: ANÁLISE DOS ÚLTIMOS 40 ANOS (1974-2013) (OCEAN CLIMATOLOGICAL TELECONNECTIONS IN STANDARDS OF EASTERN AMAZON: ANALYSIS OF THE LAST 40 YEARS (1974-2013).)

open access: yesRevista Brasileira de Climatologia, 2015
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]

open access: yes, 1966
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

open access: yesPeople and Nature, EarlyView.
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

Diferentes estrategias en las dinámicas de flujo de savia y nicho hidrológico de árboles dominantes en el Desierto Sonorense posibilitan su coexistencia

open access: yesBotan‪ical Sciences, 2023
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]

open access: yes, 1966
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

open access: yesConservation Biology, EarlyView.
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

Determinação dos parâmetros fisiológicos e gradiente térmico de diferentes grupos genéticos de caprinos no semi-árido Determination of the physiologic parameters and thermal gradient of different genetic groups of goats from semi-arid region

open access: yesCiência e Agrotecnologia, 2005
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

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