Results 61 to 70 of about 6,589 (226)

Influence of drought stress on the metabolite and ion composition in nectar and nectaries of different day‐ and night‐flowering Nicotiana species

open access: yesPlant Biology, EarlyView.
Drought stress leads to reduced nectar secretion and alters nectar composition of day‐ and night‐flowering Nicotiana species, which may impair plant–pollinator interactions. Abstract The frequencies of droughts worldwide will increase in the future due to climate changes. Nectar composition of plant species varies in relation to pollinator and can also
T. Göttlinger   +3 more
wiley   +1 more source

Immature mosquitoes (Diptera: Culicidae) on the bromeliad Nidularium innocentii in ombrophilous dense forest of Santa Catarina Island, Florianópolis, Santa Catarina State, southern Brazil [PDF]

open access: yesBiotemas, 2007
Immature forms of mosquitoes (Diptera: Culicidae) were collected from bromeliads Nidularium innocentii var. paxianum in dense ombrophilous forest of Santa Catarina Island, state of Santa Catarina.
Carlos Brisola Marcondes   +1 more
doaj  

Morphophysiological responses of Billbergia zebrina Lindl. (Bromeliaceae) in function of types and concentrations of carbohydrates during conventional in vitro culture

open access: yesOrnamental Horticulture, 2020
When propagated in vitro, explants receive all the nutrients needed for their growth, including carbohydrates, from the culture medium. However, it is not well understood how the type and concentration of carbohydrates can affect the functioning of the ...
Elizangela Rodrigues Santos   +4 more
doaj   +1 more source

Limno‐STOICH: A comprehensive database linking the elemental stoichiometry of organisms with inland aquatic habitats

open access: yesLimnology and Oceanography Letters, Volume 11, Issue 2, March 2026.
Abstract All organisms contain carbon, nitrogen, and phosphorus in widely ranging amounts and proportions. Integrating existing datasets enables quantification of this variation at global scales. Such efforts could leverage ecological stoichiometry theory, the study of elemental supply and imbalances in ecological interactions, to connect ecological ...
Jessica R. Corman   +82 more
wiley   +1 more source

Foraging behaviour of the Scale-throated Hermit Phaethornis eurynome Lesson, 1832 (Aves, Trochilidae) in Vriesea incurvata Gaudich (Bromeliaceae)

open access: yesBrazilian Journal of Biology
In this study we tested for density-dependent relationships between visitation rates of the Scale-throated Hermit (Phaethornis eurynome) and the plant density and flower number of the bromeliad Vriesea incurvata, by comparing plots with varying densities
BG. Silva, AJ. Piratelli
doaj   +1 more source

Volume de água armazenado no tanque de bromélias, em restingas da costa brasileira Water volume stored in bromeliad tanks in Brazilian restinga habitats

open access: yesActa Botânica Brasílica, 2010
Muitas espécies de bromélias armazenam água da chuva em seu interior, sendo esta característica resultado da distribuição espiralada de suas folhas, que formam pequenos tanques. O objetivo deste estudo foi avaliar e comparar o volume de água efetivamente
Luciana Cogliatti-Carvalho   +3 more
doaj   +1 more source

Phosphorylation of phosphoenolpyruvate carboxykinase in plants. Studies in plants with C4 photosynthesis and Crassulacean acid metabolism and in germinating seeds [PDF]

open access: yes, 1996
We have previously shown that phosphoenolpyruvate carboxykinase (PEPCK) is phosphorylated in vivo in the cotyledons of darkened cucumber seedlings and that phosphorylation is reversed by light [Walker and Leegood (1995) FEBS Lett. 362, 70–74].
Leegood, R.C., Walker, R.P.
core  

The world's oldest man‐made biological experiment

open access: yesEcography, Volume 2026, Issue 1, January 2026.
Biological experiments are often short‐lived due to logistical or resource‐related challenges, and short‐term observations are extrapolated to make long‐term predictions. However, the effects of experimental treatments on biological communities and processes take time to develop.
Laura Käse   +6 more
wiley   +1 more source

Ecology of the bromeligenous frog Phyllodytes luteolus (Anura, Hylidae) from three restinga remnants across Brazil's coast

open access: yesAnais da Academia Brasileira de Ciências, 2016
In this study, we analyzed diet, sexual dimorphism and bromeliad use in three populations of the hylid frog Phyllodytes luteolus from restinga habitats along the Brazilian coast. We found 13 arthropods categories in 161 stomachs.
Tatiana Motta-Tavares   +6 more
doaj   +1 more source

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