Results 61 to 70 of about 7,061 (201)

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

Molecular characterization of bromeliads from northeast Brazil

open access: yesGenetics and Molecular Research, 2014
Bromeliaceae is an important botany family that includes many species with economic value; demand for members of this family is increasing. However, illegal collection frequently occurs, drastically reducing the species populations; thus, it is necessary to collect and store Bromeliaceae genetic material.
Vieira, S. D.   +8 more
openaire   +3 more sources

Dyckia semperflorenssp. nov. (Bromeliaceae: Pitcairnioideae) from the cold region of Rio Grande do Sul, southern Brazil

open access: yesNordic Journal of Botany, Volume 2026, Issue 1, January 2026.
Dyckia semperflorens (Bromeliaceae: Pitcairnioideae) is described as a new species from the temperate climate region of Rio Grande do Sul state, southern Brazil. The new species belongs to the Dyckia encholirioides complex and is closely related morphologically to Dyckia monticola, which is endemic to the Quiriri mountain range, a high‐altitude region ...
Henrique Mallmann Büneker   +1 more
wiley   +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  

Environmental control of the microfaunal community structure in tropical bromeliads. [PDF]

open access: yes, 2017
Ecological communities hosted within phytotelmata (plant compartments filled with water) provide an excellent opportunity to test ecological theory and to advance our understanding of how local and global environmental changes affect ecosystems. However,
Altermatt   +37 more
core   +1 more source

Movement Strategies of Neotropical Nectarivorous Birds: Insights From High‐Andean Hummingbirds and Flowerpiercers

open access: yesBiotropica, Volume 58, Issue 1, January 2026.
Nectar is a highly variable, mostly unpredictable resource in tropical mountains. How do nectarivorous birds such as this male Great Sapphirewing cope? Fine‐scaled tracking of hummingbirds and flowerpiercers shows flexibility in daily movement strategies in the high Andes, possibly in response to fluctuating local conditions such as weather and ...
Cristina Rueda‐Uribe   +9 more
wiley   +1 more source

Bamboo traps as refugia for Pristimantis olivaceus (Anura: Craugastoridae) and as breeding site for Osteocephalus castaneicola (Anura: Hylidae) [PDF]

open access: yes, 2015
No abstract ...
Beirne, Christopher   +5 more
core   +2 more sources

Assessment of nutrient returns in a tropical dry forest after clear-cut without burning. [PDF]

open access: yes, 2014
Tropical dry forests (TDFs) are being deforested at unprecedented rates. The slash/burn/ agriculture/fallow-extensive livestock sequence causes significant nutrient losses and soil degradation.
ALVAREZ, I. A.   +3 more
core   +1 more source

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