Results 71 to 80 of about 45,857 (316)

The Economic Value of the Pollination Service, a Review Across Scales

, 2009
Pollination is an ecosystem service that is essential to support the production of a wide range of crops. The service is increasingly under threat, as a consequence of among others habitat loss of pollinators and increasing use of pesticides. In order to
Hein, L.G.
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Seeds of change: The impact of Ethiopia's direct seed marketing approach on smallholders' seed purchases and productivity

American Journal of Agricultural Economics, EarlyView.
Abstract While multiple factors explain low adoption rates of improved varieties by small‐scale farmers in sub‐Saharan Africa, a key supply‐side constraint is the limited availability of seed embodying new traits in the volume, quality, price, and timeliness required by farmers. This constraint is partly attributable to classical failures in the market
Dawit Mekonnen, Gashaw T. Abate, Seid Yimam, Rui Benfica, David J. Spielman, Frank Place   +5 more
wiley   +1 more source

Flaminia, a self-incompatible peach variety: Short communication

Horticultural Science, 2003
This study showed that the peach variety Flaminia is self-incompatible in Northern Greece, and it produces fruits only after cross fertilization.
C.G. Tsipouridis, T. Thomidis
doaj   +1 more source

Seasonality of floral resources in relation to bee activity in agroecosystems

Ecology and Evolution, 2021
The contribution of wild insects to crop pollination is becoming increasingly important as global demand for crops dependent on animal pollination increases.
Jessica M. Guezen, Jessica R. K. Forrest
doaj   +1 more source

Nutritional resources for pollinators from mass-flowering crop cultivars [PDF]

, 2016
PhD ThesisThe scarcity of flowers to provide dietary nectar and pollen is a key driver of recent declines in pollinators in agricultural areas, but the planting of mass-flowering crops enhances resources available to pollinators during parts of the year.
Carruthers, J. M., Carruthers, Jonathan Michael   +1 more
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Pollination ecology in the 21st century: key questions for future research

, 2010
To inspire new ideas in research on pollination ecology, we list the most important unanswered questions in the field. This list was drawn up by contacting 170 scientists from different areas of pollination ecology and asking them to contribute their ...
Jane C. Stout, Eardley, Connal, Huang, S.-Q., McCallum, Britnie, Stout, Jane C., Stout, Jane C, Nuttman, Clive, Juan Carlos Ruiz Guajardo, Brown, Mark, Schnabel, Andrew, Andrew Bourke, Connal Eardley, Baldock, Katherine C. R., Ruiz-Guajardo, Juan Carlos, Ruiz Guajardo, Juan Carlos, Armbruster, W Scott, Bourke, Andrew F.G., Armbruster, W. Scott, Stone, Graham N., Waser, Nickolas M., Shuang-Quan Huang, Dylan Hodgkiss, Potts, Simon G, et al., Peter G. Kevan, Guajardo, Juan Carlos Ruiz, Ollerton, Jeff, Kevan, Peter G., Mayer, Caroline, Katherine C. R. Baldock, Koch, Hauke, Broadbent, Arthur A. D., Andrew Schnabel, Graham N Stone, Adriana Otero Arnaiz, Britnie McCallum, Arthur Broadbent, Huang, Shuang-Quan, Fountain, Michelle T, Stone, Graham N, Arnaiz, Adriana Otero, Packer, Laurance, Otero Arnaiz, Adriana, Kevan, P.G, TBA Kirindy Pollination Consortium, Michelle T. Fountain, Dafni, Amots, Packer, Laurence, Amots Dafni, Kevan, Peter G, Potts, Simon, Axel Ssymank, Bourke, Andrew F. G., Jeff Ollerton, Baldock, Katherine, Adler, Lynn, Hodgkiss, Dylan, W. Scott Armbruster, Armbruster, W. S., Lynn Adler, Mark J.F. Brown, Potts, Simon G., Laurence Packer, Ssymank, Axel, Mayer, Carolin, Kevan, Peter, Price, Mary V., Simon G. Potts, Carolin Mayer   +68 more
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Climate change and perennial crop production: Evidence of yield impact and adaptation in California

American Journal of Agricultural Economics, EarlyView.
Abstract Perennial crops are economically important. They contribute to food security, providing essential nutrients that are often lacking in annual crops, and provide additional environmental benefits compared with annual crops. Despite their importance, empirical research on the impacts of climate change and adaptation on perennial crops remains ...
Yuanyuan Wen, Wei Zhang, Julian M. Alston   +2 more
wiley   +1 more source

High‐elevation endemic plants predicted to lose habitat from changing climate in Washington State

American Journal of Botany, EarlyView.
Abstract Premise High‐elevation plants face unique challenges from potential climate change impacts that will likely require upslope migration into increasingly smaller suitable habitat. This situation is particularly acute for endemic species that by definition occupy small geographic ranges.
Nicholas L. Gjording, Erik W. Ertsgaard, David E. Giblin, Iris H. Dimpsey, Owen B. Bard   +4 more
wiley   +1 more source

Interactions between maternal provisioning and natural selection on seed mass fluctuate across heat waves

American Journal of Botany, EarlyView.
Abstract Premise Changing climates are leading to more frequent and severe heat waves, potentially threatening plant populations. Both acclimation to stress and selection for heat‐escape or heat‐resistance phenotypes occur during heat waves. However, plastic responses and selection do not necessarily interact cohesively—even producing trait responses ...
Lana F. Gaspard, Elissa Harb, Stacy D. Holt Jr., Courtney M. Patterson, Nicholas J. Kooyers   +4 more
wiley   +1 more source

Responses to risks and opportunities associated with pollinators and pollination [PDF]

, 2016
The overall aim of the thematic assessment of Pollinators, Pollination and Food Production is to assess animal pollination as a regulating ecosystem service under pinning food production in the context of its contribution to nature'sgifts to people and ...
Viana, Blandina Felipe, Lopes, Ariadna, Bommarco, Riccardo, Galetto, Leonardo, Taki, Hisatomo, del Coro Arizmendi, Maria, Brosi, Berry, Dicks, Lynn, Cunningham, Saul   +8 more
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