Results 241 to 250 of about 2,119,986 (339)

Variation in pollen limitation among reproductive modules points to likely resource reallocation in the alpine plant Veratrum grandiflorum

open access: yesNordic Journal of Botany, EarlyView.
Pollen limitation, a decrease in seed production due to insufficient pollen receipt, may influence plant demography and the evolution of sexual systems. Its empirical estimation of pollen supplementation of some of the flowers on an individual is well known to be prone to overestimation due to potential resource reallocation among the individual's ...
Xia Jiang   +6 more
wiley   +1 more source

Individual Determinants of Hypothetical Bias in Charitable Giving

open access: yesNonprofit Management and Leadership, EarlyView.
ABSTRACT What people answer in surveys is not necessarily what they would do in reality. In a survey experiment administered to 1650 respondents in the United States, I show participants the profile of a fictional charity operating refugee camps. Participants tend to be more generous toward the charity when asked to make a hypothetical future donation ...
Joannie Tremblay‐Boire
wiley   +1 more source

Landscape heterogeneity shapes the spatial and diet partitioning of a montane carnivore guild

open access: yesOikos, EarlyView.
Interspecific competition is a structural force in animal communities and can be particularly influential among species with similar taxonomic or ecological characteristics. In carnivore communities, heterogeneity in resource availability and landscape structure can ameliorate competitive interactions, but it is often difficult to quantify the space ...
Marie E. Martin   +12 more
wiley   +1 more source

Comparing neutralizing antibody activity over time between naïve and convalesced COVID-19 vaccinated individuals. [PDF]

open access: yesSci Rep
de Pillis L   +8 more
europepmc   +1 more source

Recurrent drought amplifies drought impacts and increases seasonal synchrony in mountain grassland communities

open access: yesOikos, EarlyView.
Climate change increases the recurrence of drought events with strong repercussions on grassland ecosystems. While the effects of single drought events on ecosystem structure and functioning are well understood, it is largely unknown whether and how recurrent drought events modify ecosystem responses to subsequent drought.
Lena M. Müller   +4 more
wiley   +1 more source

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