Results 71 to 80 of about 892,541 (314)

Noeplingia Ramamoorthy, Hiriart & Medrano (Labiatae) un nuevo género de Hidalgo, México

open access: yesBotan‪ical Sciences, 1982
Se describe un nuevo género del estado de Hidalgo, México, Neoeplingia (Labiatae), se discuten sus relaciones con géneros aliados de la subtribu Menthoideae. Hasta ahora se conoce solamente una especie, N. leucophylloides.
T. P. Ramamoorthy   +2 more
doaj   +1 more source

Recomendação Especial

open access: yesRevista Brasileira de Cancerologia, 2023
A imunoterapia pelo BCG ou por qualquer outro mêtodo deverá sempre ser precedida e acompanhada pela avaliação imunológica do paciente.
Humberto Torloni   +9 more
openaire   +1 more source

How vulnerable are amphibians to climate change? A mechanistic perspective

open access: yesFunctional Ecology, EarlyView.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Amphibians are frequently identified as highly vulnerable to climate change, yet the mechanisms driving this sensitivity remain uncertain. Approaches that explicitly link physiological mechanisms to environmental variation provide powerful tools for forecasting climate ...
Eric A. Riddell   +2 more
wiley   +1 more source

La proliferación de los conceptos de especie en la biología evolucionista

open access: yesTheoria, 2010
La biología evolucionista no ha logrado definir un concepto de especie que satisfaga a todos sus colaboradores. El presente panorama crítico de las principales propuestas y sus respectivas dificultades apunta, por un lado, a ilustrar los procesos de ...
Roberto Torretti
doaj   +1 more source

Coping with change: Interactive effects of anthropogenic change influence the breeding success and survival of a desert‐dwelling cooperative breeder

open access: yesFunctional Ecology, EarlyView.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Habitat modification and climate change are major threats to biodiversity. Using 38 years of data (1985–2023), we examined their combined influence on a desert‐dwelling cooperative breeder's reproductive success and projected the likely magnitude of future effects of ...
Alejandro Alaman   +4 more
wiley   +1 more source

A new species of Astyanax (Ostariophysi: Characidae) from the headwaters of the arheic Río Sucuma, Catamarca, Northwestern Argentina

open access: yesNeotropical Ichthyology, 2017
A new species of Astyanax is described from the arheic system of Río Sucuma, in Catamarca, Northwestern Argentina. The new species is distinguished from its congeners by a combination of characters including the presence of a broad vertical humeral spot,
Guillermo E. Terán   +2 more
doaj   +1 more source

PORQUE ESPECIAL?

open access: yesRevista Brasileira de Sexualidade Humana, 2007
"Amores Especiais", por quê? Será que a diferença de forma, cor, opção sexual e do fato de ser "deficiente", realidades e verdades do existir EXPRESSAS NA DIVERSIDADE E MODO SINGULAR DE SER E DO CORPO, impõe um modo ESPECIAL DO AMAR E SER AMANTE? Será que a relação de agir e interagir determina, de forma autoritária, o que é ESPECIAL, por conseqüência ...
openaire   +2 more sources

A vortex population viability analysis model for the Chacoan peccary (catagonus wagneri) [PDF]

open access: yes, 2016
El quimilero o taguá (Catagonus wagneri) es una especie amenazada, endémica del Chaco Seco, para la cual disponemos de poca información. Para estimar cuantitativamente el riesgo de disminución y extinción de sus poblaciones silvestres generamos modelos ...
Altrichter, Mariana   +8 more
core  

Descripción de los estadios larvales de Sigara (Tropocorixa) jensenhaarupi (Heteroptera: Corixidae), con notas acerca de su ecología [PDF]

open access: yes, 2011
Sigara (Tropocorixa) jensenhaarupi Jaczewski is the smallest species of the subgenus ranging from 4.2–4.7 mm, and it is characterized by the absence of a strigil, the small and narrow genital capsule with a short hypandrium in males, and the shape of the
Melo, María Cecilia   +1 more
core   +2 more sources

Hummingbird interaction niche packing is influenced by species richness and resource availability in the southern tropical Andes

open access: yesFunctional Ecology, EarlyView.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Niche partitioning is often considered an important mechanism promoting species co‐occurrence in species‐rich communities. As species richness increases, niche partitioning may lead to different niche structures, including increased packing of species niches when the ...
Bryan G. Rojas   +3 more
wiley   +1 more source

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