Results 131 to 140 of about 2,210 (278)

FLORA AND VEGETATION OF THE SEASONALLY DRY TROPICS IN MEXICO: ORIGIN AND BIOGEOGRAPHICAL IMPLICATIONS

open access: yesActa Botanica Mexicana, 2012
Entre las diversas ideas que se han propuesto para explicar la gran diversidad biológica de México está la que afirma que ésta es el resultado del contacto de las biotas neotropical y eártica; sin embargo, esta explicación relacionada con el gran ...
Eduardo A. P\u00E9rez-Garc\u00EDa   +2 more
doaj  

The dual crisis: Climate change simultaneously drives pollinator decline and Pest outbreaks

open access: yesAgricultural and Forest Entomology, EarlyView.
Climate change acts as an asymmetric ecological filter, favouring r‐selected pest traits (rapid reproduction, generalism) while disadvantaging K‐selected pollinators. For every 1°C of warming, bee species richness declines ~25% since the 1990s, while pest‐induced crop losses increase by 10%–25%. A network‐centric approach integrating climate‐responsive
Diriba Fufa Serdo
wiley   +1 more source

LAS MARCGRAVIACEAE (ERICALES) DE BRASIL: LAS ESPECIES DEL COMPLEJO NORANTEA

open access: yesCaldasia, 2005
Se presenta un estudio taxonómico de las especies brasileñas del complejo Norantea (géneros Marcgraviastrum, Norantea, Sarcopera y Schwartzia) de la familia neotropical Marcgraviaceae.
GIRALDO-CAÑAS DIEGO, FIASCHI PEDRO
doaj  

Morphology of Guard Hairs in Amazonian Marsupials: Intergeneric Variation, Habitat and Habit Association in a Phylogenetic Framework of the Order Didelphimorphia

open access: yesActa Zoologica, EarlyView.
ABSTRACT The cuticle and medulla of guard hairs exhibit distinct morphological patterns among mammalian species. To investigate this variability in marsupials from the Brazilian Amazon, we analysed guard hairs from nine Didelphimorphia species and incorporated data from an additional 25 didelphid species.
Matheus M. Bitencourt   +4 more
wiley   +1 more source

Riqueza y diversidad de las especies reportadas de Gongora (Orchidaceae: Stanhopeinae) en Colombia

open access: yesBiota Colombiana
Las orquídeas son un grupo taxonómico muy diverso, dentro del cual, las especies del género Gongora tienen una alta relevancia debido a su relación con las abejas Euglossini, importantes polinizadoras en el neotrópico.
Sergio Martínez-López   +1 more
doaj   +1 more source

Evolutionary framework and tribal circumscription of Amaranthaceae sensu stricto based on a comprehensive phylogenomic analysis

open access: yesCladistics, EarlyView.
Abstract The evolutionary history of Amaranthaceae sensu stricto (s.s.) has been shaped by multiple whole‐genome duplications and rapid radiations, producing an ecologically diverse lineage whose internal relationships have long remained unresolved.
Tina Kiedaisch   +3 more
wiley   +1 more source

Phytochemical diversity, therapeutic potential, and ecological roles of the Cecropia genus

open access: yes
The genus Cecropia, a pivotal component of Neotropical flora, is renowned for its integration of traditional medicinal uses with significant ecological functions. This review aims to highlight the phytochemical diversity and pharmacological activities of
Latifah Al Shammari
core   +1 more source

Vegetacion y flora de Pantepui, Region Guayana

open access: yes, 1987
La Provincia biogeográfica Pantepui, definida como el conjunto de ecosistemas orográficos meso - y submicrotermicos desarrollados en las montanas ("tepuyes") de la Región Guayana por encima de los 1.20011.500 m s.n.m., presenta una cobertura vegetal ...
Otto Huber, Huber, Otto,, Huber,Otto
core   +1 more source

Taxonomic and functional diversity of urban bees of the world

open access: yesConservation Biology, EarlyView.
Abstract Bees play a pivotal role in terrestrial environments. Urbanization can affect these organisms and the ecosystem services they provide. However, knowledge of the global diversity of urban bees is limited. Thus, we summarized data on urban bee species identities and occurrences; compared distributions of all bees with those found in urban ...
João C. F. Cardoso   +10 more
wiley   +1 more source

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