Results 101 to 110 of about 5,376 (197)

Changes in the Onset of Spring and Uncertainty in 21st Century Terrestrial Carbon Sinks [PDF]

open access: yes, 2012
A growing imperative in climate change research is to understand the relative carbon balance of terrestrial ecosystems when they are perturbed by warming and other climate changes.
Salk, C.F.
core  

Forecasting bark beetle early flight activity with plant phenology [PDF]

open access: yes, 2016
Bark beetle outbreaks are a major threat to forest productivity, and a robust forecast of early flight activity is necessary for inhibition or mitigation of large-scale infestations.
Helm, R.   +3 more
core   +1 more source

Época e princípios ativos para a quebra de dormência de caquizeiro cv. Fuyu Time and active ingredients for bud break of japanese persimmon cv. Fuyu

open access: yesRevista Brasileira de Fruticultura, 2009
Este trabalho foi realizado com o objetivo de aumentar o período de oferta do caqui 'Fuyu' e buscar alternativas à falta de opções para estimular a brotação, avaliando-se épocas e diferentes princípios ativos na quebra de dormência dos frutos.
Ricardo Antonio Ayub   +2 more
doaj   +1 more source

Yield determination in olive hedgerow orchards. I. Yield and profiles of yield components in north–south and east–west oriented hedgerows

open access: yes, 2009
A study of the vertical distribution of flowering and fruit set and of components of yield (fruit numbers, fruit size, and fruit oil content) was maintained for 2 years in N–S- and E–W-oriented olive hedgerows of comparable structure (row spacing 4m ...
Centeno Muñoz, Ana   +2 more
core  

The variable effect of polyploidization on the phenotype in Escallonia [PDF]

open access: yes, 2018
To induce new variation within the Escallonia genus, chromosome doubling was performed in E. rubra, E. rosea, and E. illinita, three important species within this genus of mainly evergreen woody ornamental species.
Hanne E. R. Denaeghel   +6 more
core   +2 more sources

Timing, light availability and vigour determine the response of Abies alba saplings to leader shoot browsing [PDF]

open access: yes, 2018
Herbivore browsing on tree saplings is a common phenomenon that can cause damage particularly on preferred species. In this study, the combined effects of light availability and timing of browsing on the response of 9-year-old Abies alba saplings were ...
Bugmann, Harald, Kupferschmid, Andrea
core  

Dinâmica da dormência de gemas de dois anos de macieira 'Imperial Gala' em região de baixa ocorrência de frio Dormancy dynamics of two year old buds of 'Imperial Gala' apple tree in a region of low chill occurence

open access: yesRevista Brasileira de Fruticultura, 2004
O objetivo deste trabalho foi determinar a dinâmica da dormência de gemas em ramos de dois anos de macieira 'Imperial Gala' com ou sem frio suplementar durante o outono e inverno, cultivadas em Porto Amazonas - PR, região de baixa ocorrência de frio.
Ruy Inacio Neiva de Carvalho   +1 more
doaj   +1 more source

Role of Temperature in the Biological Activity of a Boreal Forest [PDF]

open access: yes, 2010
In northern latitudes, temperature is the key factor driving the temporal scales of biological activity, namely the length of the growing season and the seasonal efficiency of photosynthesis.
Lappalainen, Hanna
core  

BUDBURST TIMING OF VALLEY OAKS AT HASTINGS RESERVATION, CENTRAL COASTAL CALIFORNIA [PDF]

open access: yesMadroño, 2021
Walter D. Koenig   +4 more
openaire   +1 more source

Differential shifts in the phenological timing and duration of Citrus unshiu: Insights from long-term observations and projected warming

open access: yesScientia Horticulturae
This study analyzed temporal trends in the budburst, full bloom, and fruit-enlargement stages of Citrus unshiu, and predicted phenological shifts under increasing temperatures.
Ho-Jin Seo   +3 more
doaj   +1 more source

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