Catalogue Search | MBRL
Are you sure you want to remove the book from the shelf?
{{itemTitle}}
32,370
result(s) for
"Pollinators"
Sort by:
Our native bees : North America's endangered pollinators and the fight to save them
Our Native Bees is the result of Paige Embry's yearlong quest to learn more about the forgotten, yet fundamental, native bees of North America.
Book
Bees and other pollinators
\"Bees, their life cycle and role in pollination, as well as other types of pollinators. Also a bit about how they are struggling and what you can do to help.\"-- Provided by publisher.
Bending the Curve. Wissen, Handeln, FürSorge für Biodiversität
Im ersten Stock beeindruckt das freundliche Raumambiente des mexikanischen Künstlers Fernando Laposse. Das mehrteilige Gebilde beherbergt eine Art Atelier, im dem die Experimente der Künstlerin mit Seetang - ihr Departement of Seaweed - ausgestellt sind. Damit kann man auf der Website https:// pollinator.art selbst Gärten entwerfen - Gärten, nicht nach menschlichem Geschmack gestaltet, sondern wie sie sich Bestäuber wünschten: mit Blumen, deren Blüten viele verschiedene Formen aufweisen, damit möglichst viele verschiedene Rüssel daran nippen können. Leider stört ihr Gestus des Erklären- und Überzeugenwollens - zum Beispiel die allwissende Voice-over-Stimme in den Videos oder die etwas pathetische Rauminszenierung der Kohlemonolithen mit Textprojektionen - die Singularität der Erfahrung.
Journal Article
A meta-analysis of the agents of selection on floral traits
Floral traits are hypothesized to evolve primarily in response to selection by pollinators. However, selection can also be mediated by other environmental factors. To understand the relative importance of pollinator-mediated selection and its variation among trait and pollinator types, we analyzed directional selection gradients on floral traits from experiments that manipulated the environment to identify agents of selection. Pollinator-mediated selection was stronger than selection by other biotic factors (e.g., herbivores), but similar in strength to selection by abiotic factors (e.g., soil water), providing partial support for the hypothesis that floral traits evolve primarily in response to pollinators. Pollinator-mediated selection was stronger on pollination efficiency traits than on other trait types, as expected if efficiency traits affect fitness via interactions with pollinators, but other trait types also affect fitness via other environmental factors. In addition to varying among trait types, pollinator-mediated selection varied among pollinator taxa: selection was stronger when bees, long-tongued flies, or birds were the primary visitors than when the primary visitors were Lepidoptera or multiple animal taxa. Finally, reducing pollinator access to flowers had a relatively small effect on selection on floral traits, suggesting that anthropogenic declines in pollinator populations would initially have modest effects on floral evolution.
Journal Article
Non-bee insects are important contributors to global crop pollination
Wild and managed bees are well documented as effective pollinators of global crops of economic importance. However, the contributions by pollinators other than bees have been little explored despite their potential to contribute to crop production and stability in the face of environmental change. Non-bee pollinators include flies, beetles, moths, butterflies, wasps, ants, birds, and bats, among others. Here we focus on non-bee insects and synthesize 39 field studies from five continents that directly measured the crop pollination services provided by non-bees, honey bees, and other bees to compare the relative contributions of these taxa. Non-bees performed 25–50% of the total number of flower visits. Although non-bees were less effective pollinators than bees per flower visit, they made more visits; thus these two factors compensated for each other, resulting in pollination services rendered by non-bees that were similar to those provided by bees. In the subset of studies that measured fruit set, fruit set increased with non-bee insect visits independently of bee visitation rates, indicating that non-bee insects provide a unique benefit that is not provided by bees. We also show that non-bee insects are not as reliant as bees on the presence of remnant natural or seminatural habitat in the surrounding landscape. These results strongly suggest that non-bee insect pollinators play a significant role in global crop production and respond differently than bees to landscape structure, probably making their crop pollination services more robust to changes in land use. Non-bee insects provide a valuable service and provide potential insurance against bee population declines.
Journal Article