Results 41 to 50 of about 508,169 (212)

Distribution, scale, and drivers of mass mortality events in Europe's freshwater bivalves

open access: yesConservation Biology, EarlyView.
Abstract Mass mortality events (MMEs) are decimating populations and compromising key ecosystem functions around the globe. One taxon particularly vulnerable to MMEs is freshwater bivalve mollusks. This group has important ecosystem engineering capacities and includes highly threatened and highly invasive taxa.
Daniel A. Cossey   +39 more
wiley   +1 more source

Estado del Clima en Cuba 2019. Resumen ampliado

open access: yesRevista Cubana de Meteorología, 2020
El presente informe realiza una descripción del estado del clima en Cuba durante el 2019 a partir del análisis del comportamiento de determinadas variables climáticas, así como de algunos factores que regulan la variabilidad del clima en la región y en ...
Cecilia Fonseca-Rivera   +12 more
doaj  

Some factors affecting the distribution and apparent abundance of yellowfin and skipjack tuna in the Eastern Pacific Ocean [PDF]

open access: yes, 1964
ENGLISH: Since 1951, the Inter-American Tropical Tuna Commission has been investigating the biology, ecology and population dynamics of the yellowfin tuna, Thunnus albacares, and the skipjack tuna, Katsuwonus pelamis, in the Eastern Pacific Ocean.
Barrett, Izadore, Broadhead, Gordon C.
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

LAS TEMPERATURAS EN EL CAMPO DE CARTAGENA (1940-1981)

open access: yesPapeles de Geografí­a, 1997
En el estudio de las temperaturas del Campo de Cartagena hemos analizado no sólo las medias anuales, sino también la distribución mensual de las medias, las máximas y las mínimas absolutas, así como las oscilaciones térmicas, las heladas, los contrastes ...
José Amestoy Alonso
doaj  

Efecto de la cobertura vegetal sobre la temperatura del suelo [PDF]

open access: yes, 2016
La temperatura del suelo es un factor a tener en cuenta al influir en la germinación de las semillas, desarrollo del cultivo y en procesos microbiológicos fundamentales para la disponibilidad de macronutrientes tales como el nitrógeno, azufre y fósforo ...
Bezus, Rodolfo   +4 more
core  

Superconductivity and magnetism on flux grown single crystals of NiBi3 [PDF]

open access: yes, 2013
We present resistivity, magnetization and specific heat measurements on flux grown single crystals of NiBi3. We find typical behavior of a type-II superconductor, with, however, a sizable magnetic signal in the superconducting phase.
García-Hernández, M.   +10 more
core   +2 more sources

Effects of landscape context on avian specialist response to increased surface temperature in protected areas

open access: yesConservation Biology, EarlyView.
Abstract Human development is a driver of global change and a major threat to biodiversity. Protected areas maintain and support biodiversity, but outside stressors, such as climate change and land use change, can negatively influence natural resources within protected areas.
Leah J. Rudge   +2 more
wiley   +1 more source

Topographical and Physicochemical Contrast in Photopatterned SU-8 Films for Microfabrication of Multilayer Structures

open access: yesAdvances in Materials Science and Engineering, 2016
During SU-8 standard photolithography process, a patterned topography is formed with a characteristic height profile produced by the different shrinkage of the UV exposed and masked regions.
L. Salazar Alarcón   +3 more
doaj   +1 more source

Comportamiento mecánico a altas temperaturas de cementos de ceniza volante activados alcalinamente [PDF]

open access: yes, 2010
En este trabajo se realiza un estudio comparativo del comportamiento mecánico, en función de la temperatura, entre un cemento Portland comercial, utilizado de referencia y dos nuevos materiales cementantes.
Fernandez Jimenez, Ana   +3 more
core  

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