Results 101 to 110 of about 1,518 (216)

Euglossine bees as potential bio-indicators of coffee farmas: Does forest access, on a seasonal basis, affect sbundance?

open access: yesRevista de Biología Tropical, 2006
In order to understand the implications of agriculture on the environment, ecosystem health must be measured. Observing the presence of a biological indicator within an ecosystem is one such method. In this study, male euglossine bees were observed using
Ingemar Hedström   +2 more
doaj  

Comparative structure of the osmophores in the flowers of Stanhopea graveolens Lindley and Cycnoches chlorochilon Klotzsch (Orchidaceae)

open access: yesActa Agrobotanica, 2012
The structure of the osmophores in Stanhopea graveolens and Cycnoches chlorochilon was studied by means of light microscopy (LM), scanning electron microscopy (SEM) and transmission electron microscopy (TEM).
Sebastian Antoń   +2 more
doaj   +1 more source

POLLINATION OF TWO SYMPATRIC SPECIES OF DALECHAMPIA (EUPHORBIACEAE) IN SURINAME BY MALE EUGLOSSINE BEES

open access: yesAmerican Journal of Botany, 1992
Dalechampia brownsbergensis and D. fragrans co‐occur in Suriname, and both are pollinated by fragrance‐collecting male euglossine bees. Dalechampia brownsbergensis appears to bloom year‐round and is pollinated by relatively few species of bees, including Euglossa tridentata and E. gaianii. In contrast, D.
Armbruster, W. Scott   +2 more
openaire   +2 more sources

A fragmentação florestal e a diversidade de insetos nas florestas tropicais úmidas. [PDF]

open access: yes, 2011
Introdução; Metodologias de estudo; Efeitos da fragmentação de florestas tropicais e da sucessão ecológica sobre a diversidade de insetos; Medidas de diversidade; Considerações geraisbitstream/CPAF-AC/7287/1/doc57 ...
THOMAZINI, A. P. B. W., THOMAZINI, M. J.
core  

Temporal variation in the abundance of Orchid Bees (Hymenoptera: Apidae) in a Neotropical Hygrophilous Forest

open access: yesSociobiology, 2013
Although bees are important pollinators in several ecosystems around the world, studies on bee diversity in hygrophilous forests are scarce. This type of vegetation is restricted to permanently wet soils and, therefore, has particular floristic ...
Maurício Meirelles do Nascimento Castro   +3 more
doaj  

Recognizing Indoor Scenes [PDF]

open access: yes, 2001
We propose a scheme for indoor place identification based on the recognition of global scene views. Scene views are encoded using a holistic representation that provides low-resolution spatial and spectral information.
Sinha, Pawan, Torralba, Antonio
core  

Are orchid bees at risk? First comparative survey suggests declining populations of forest-dependent species

open access: yesBrazilian Journal of Biology
The two largest Atlantic Forest remnants in the state of Espírito Santo, eastern Brazil, namely ‘Reserva Biológica de Sooretama’ (REBIO Sooretama) and ‘Reserva Natural Vale’ (RNV), were surveyed for their orchid-bee faunas.
A Nemésio
doaj   +1 more source

Floral Scent Chemistry and Pollinators of a Sexually Dimorphic Neotropical Orchid. [PDF]

open access: yesPlants (Basel), 2022
Milet-Pinheiro P   +5 more
europepmc   +1 more source

The scaling of carbon dioxide release and respiratory water loss in flying fruit flies (Drosophila spp.) [PDF]

open access: yes, 2000
By simultaneously measuring carbon dioxide release, water loss and flight force in several species of fruit flies in the genus Drosophila, we have investigated respiration and respiratory transpiration during elevated locomotor activity.
Dickinson, Michael H.   +2 more
core  

Pollinating animals in the urban environment [PDF]

open access: yes, 2018
Urban environments contain habitats for flowering plants and their pollinating animal species. It is, however, unclear how the urban matrix influences plant-pollinator processes. We recorded plant diversity, floral abundance, flower visitor diversity and
Ghazoul, Jaboury, Hennig, Ernest
core  

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