Results 131 to 140 of about 3,430,781 (308)

La deuda pública en el mundo [PDF]

open access: yes
(Disponible en idioma inglés) La base de datos se puede acceder en: http://www. iadb. org/res/pub_desc.
Dany Jaimovich, Ugo Panizza
core  

Migrations of yellowfin tuna tagged off the southern coast of Mexico in 1960 and 1969 [PDF]

open access: yes, 1974
ENGLISH: The map method, the Jones method, the variance-covariance method, and the Skellam method were used to study the migrations of tagged yellowfin tuna released off the southern coast of Mexico in 1960 and 1969.
Bayliff, William H.   +1 more
core  

A link between increased temperature and avian body condition in a logged tropical forest

open access: yesConservation Biology, EarlyView.
Abstract The combined effects of anthropogenic disturbances, such as logging and climate change, remain poorly understood; yet, they are the main threats to tropical biodiversity. Most tropical African countries lack long‐term climate data, so climate impacts on biodiversity cannot be assessed.
Moreen Uwimbabazi   +7 more
wiley   +1 more source

Caracterización e interpretación automática de descripciones conceptuales en dominios poco estructurados usando variables numéricas [PDF]

open access: yes, 2002
La investigación que se presenta en este proyecto, tiene como objetivo fundamental: establecer una metodología formal para la generación automática de descripciones conceptuales de clases construidas en dominios de naturaleza continua, reales y ...
Gibert, Karina, Vazquez, Fernando
core   +1 more source

The collective application of shorebird tracking data to conservation

open access: yesConservation Biology, EarlyView.
Abstract Addressing urgent conservation issues, such as the drastic declines of North American migratory birds, requires creative, evidence‐based, efficient, and collaborative approaches. The abundance of over 50% of monitored North American shorebird populations has declined by over 50% since 1980. To address these declines, we developed a partnership
Autumn‐Lynn Harrison   +71 more
wiley   +1 more source

Oceanographic observations for the Mazatlan Project: October 1966 - August 1967 [PDF]

open access: yes, 1969
ENGLISH: To learn more about the early life of yellowfin tuna in their immediate environment, the Inter-American Tropical Tuna Commission initiated a 2-year cooperative investigation with the Direccion General de Pesca e Industrias Conexas (DGP) of ...
Leet, W.S., Stevenson, M.R.
core  

Differences in characteristics between naturalized threatened plants and other threatened plants

open access: yesConservation Biology, EarlyView.
Abstract Many non‐native plant species introduced by humans have become naturalized. At the same time many species are threatened in their native range. However, the number of plant species threatened in their native range that are naturalized elsewhere remains unknown.
Weihan Zhao   +10 more
wiley   +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  

Comprehensive framework for assessing and optimizing existing research networks

open access: yesConservation Biology, EarlyView.
Abstract Conservation, monitoring, and research networks, or collections of ecological research sites unified under a common mission of data collection or a research mission, are essential infrastructure for understanding large landscapes. However, most networks developed opportunistically over decades rather than through systematic design, creating ...
Alyson East   +2 more
wiley   +1 more source

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