Search

Your search keyword '"Frost, Carol M."' showing total 29 results
Start Over Author "Frost, Carol M."
29 results on '"Frost, Carol M."'

2. Biodiversity measures of a grassland plant-pollinator community are resilient to the introduction of honey bees (Apis mellifera).

Author

Worthy, Sydney H., Acorn, John H., and Frost, Carol M.

Abstract

The prairies of Canada support a diversity of insect pollinators that contribute pollination services to flowering crops and wild plants. Habitat loss and use of managed pollinators has increased conservation concerns for wild pollinators, as mounting evidence suggests that honey bees (Apis mellifera) may reduce their diversity and abundance. Plant-pollinator community analyses often omit non-bee pollinators, which can be valuable contributors to pollination services. Here, we experimentally introduced honey bees to examine how their abundance affects the species richness, diversity, abundance, species composition, interaction richness, and interaction diversity of all wild pollinators, and of four higher taxa separately. We identified all insect pollinators and analyzed how honey bee abundance affected the above biodiversity metrics, controlling for flower abundance and flower species richness. Even with high honey bee densities, there was no change to any of these variables, except that beetle species diversity increased. All other taxa had no significant relationship to honey bee abundance. Considering the widespread use of managed honey bees, the effect they have on wild pollinators should be firmly established. Our results suggest that honey bees have little to no short-term impact on the wild pollinator community or its interactions with plants in this native grassland. [ABSTRACT FROM AUTHOR]

Published
2024
Full Text
View/download PDF

5. Tripartite networks show that keystone species can multitask

Author

Fundação para a Ciência e a Tecnologia (Portugal), Ministerio de Ciencia, Innovación y Universidades (España), Agencia Estatal de Investigación (España), Universidad de Cádiz, European Commission, Conselho Nacional de Desenvolvimento Científico e Tecnológico (Brasil), Timóteo, Sérgio [0000-0003-2417-3259], Albrecht, Jörg [0000-0002-9708-9413], Rumeu, Beatriz [0000-0002-9017-5466], Norte, Ana C. [0000-0001-7833-4463], Traveset, Anna [0000-0002-1816-1334], Frost, Carol M. [0000-0003-3805-5528], Marchante, Elizabete [0000-0003-1303-7489], López-Núñez, Francisco Alejandro [0000-0003-0773-9134], Peralta, Guadalupe [0000-0003-1947-4989], Memmott, Jane [0000-0002-2113-2577], Olesen, Jens M. [0000-0003-1998-1083], Costa, José Miguel [0000-0002-4991-7122], Silva, Luis Pascual da [0000-0003-2358-1277], Carvalheiro, Luísa G. [0000-0001-7655-979X], Correia, Marta [0000-0003-0475-8962], Staab, Michael [0000-0003-0894-7576], Blüthgen, Nico [0000-0001-6349-4528], Farwig, Nina [0000-0002-0554-5128], Hervías-Parejo, Sandra [0000-0002-5377-3619], Rodríguez-Echeverría, Susana [0000-0002-2058-3229], Heleno, Rubén H. [0000-0002-4808-4907], Timóteo, Sérgio, Albrecht, Jörg, Rumeu, Beatriz, Norte, Ana C., Traveset, Anna, Frost, Carol M., Marchante, Elizabete, López-Núñez, Francisco Alejandro, Peralta, Guadalupe, Memmott, Jane, Olesen, Jens M., Costa, José Miguel, Silva, Luis Pascual da, Carvalheiro, Luísa G., Correia, Marta, Staab, Michael, Blüthgen, Nico, Farwig, Nina, Hervías-Parejo, Sandra, Mironov, Sergei, Rodríguez-Echeverría, Susana, Heleno, Rubén H., Fundação para a Ciência e a Tecnologia (Portugal), Ministerio de Ciencia, Innovación y Universidades (España), Agencia Estatal de Investigación (España), Universidad de Cádiz, European Commission, Conselho Nacional de Desenvolvimento Científico e Tecnológico (Brasil), Timóteo, Sérgio [0000-0003-2417-3259], Albrecht, Jörg [0000-0002-9708-9413], Rumeu, Beatriz [0000-0002-9017-5466], Norte, Ana C. [0000-0001-7833-4463], Traveset, Anna [0000-0002-1816-1334], Frost, Carol M. [0000-0003-3805-5528], Marchante, Elizabete [0000-0003-1303-7489], López-Núñez, Francisco Alejandro [0000-0003-0773-9134], Peralta, Guadalupe [0000-0003-1947-4989], Memmott, Jane [0000-0002-2113-2577], Olesen, Jens M. [0000-0003-1998-1083], Costa, José Miguel [0000-0002-4991-7122], Silva, Luis Pascual da [0000-0003-2358-1277], Carvalheiro, Luísa G. [0000-0001-7655-979X], Correia, Marta [0000-0003-0475-8962], Staab, Michael [0000-0003-0894-7576], Blüthgen, Nico [0000-0001-6349-4528], Farwig, Nina [0000-0002-0554-5128], Hervías-Parejo, Sandra [0000-0002-5377-3619], Rodríguez-Echeverría, Susana [0000-0002-2058-3229], Heleno, Rubén H. [0000-0002-4808-4907], Timóteo, Sérgio, Albrecht, Jörg, Rumeu, Beatriz, Norte, Ana C., Traveset, Anna, Frost, Carol M., Marchante, Elizabete, López-Núñez, Francisco Alejandro, Peralta, Guadalupe, Memmott, Jane, Olesen, Jens M., Costa, José Miguel, Silva, Luis Pascual da, Carvalheiro, Luísa G., Correia, Marta, Staab, Michael, Blüthgen, Nico, Farwig, Nina, Hervías-Parejo, Sandra, Mironov, Sergei, Rodríguez-Echeverría, Susana, and Heleno, Rubén H.

Abstract

Keystone species are disproportionately important for ecosystem functioning. While all species engage in multiple interaction types with other species, keystone species importance is often defined based on a single dimension of their Eltonian niche, that is, one type of interaction (e.g. keystone predator). It remains unclear whether the importance of keystone species is unidimensional or if it extends across interaction types. We conducted a meta-analysis of tripartite interaction networks examining whether species importance in one dimension of their niche is mirrored in other niche dimensions, and whether this is associated with interaction outcome, intimacy or species richness. We show that keystone species importance is positively associated across multiple ecological niche dimensions, independently of abundance, and find no evidence that multidimensionality of keystone species is influenced by the explanatory variables. We propose that the role of keystone species extends across multiple ecological niche dimensions, with important implications for ecosystem resilience and conservation. Read the free Plain Language Summary for this article on the Journal blog.

Published
2023

10. Supporting Information for: Tripartite networks show that keystone species can multitask

Author

Timóteo, Sérgio [sergio.timoteo@uc.pt], Timóteo, Sérgio, Albrecht, Jörg, Rumeu, Beatriz, Norte, Ana C., Traveset, Anna, Frost, Carol M., Marchante, Elizabete, López-Núñez, Francisco Alejandro, Peralta, Guadalupe, Memmott, Jane, Olesen, Jens M., Costa, José Miguel, Silva, Luis Pascual da, Carvalheiro, Luísa G., Correia, Marta, Staab, Michael, Blüthgen, Nico, Farwig, Nina, Hervías-Parejo, Sandra, Mironov, Sergei, Rodríguez-Echeverría, Susana, Heleno, Rubén H., Timóteo, Sérgio [sergio.timoteo@uc.pt], Timóteo, Sérgio, Albrecht, Jörg, Rumeu, Beatriz, Norte, Ana C., Traveset, Anna, Frost, Carol M., Marchante, Elizabete, López-Núñez, Francisco Alejandro, Peralta, Guadalupe, Memmott, Jane, Olesen, Jens M., Costa, José Miguel, Silva, Luis Pascual da, Carvalheiro, Luísa G., Correia, Marta, Staab, Michael, Blüthgen, Nico, Farwig, Nina, Hervías-Parejo, Sandra, Mironov, Sergei, Rodríguez-Echeverría, Susana, and Heleno, Rubén H.

Published
2023

14. Tripartite networks show that keystone species can multitask

Author

Timóteo, Sérgio, primary, Albrecht, Jörg, additional, Rumeu, Beatriz, additional, Norte, Ana C., additional, Traveset, Anna, additional, Frost, Carol M., additional, Marchante, Elizabete, additional, López‐Núñez, Francisco A., additional, Peralta, Guadalupe, additional, Memmott, Jane, additional, Olesen, Jens M., additional, Costa, José M., additional, da Silva, Luís P., additional, Carvalheiro, Luísa G., additional, Correia, Marta, additional, Staab, Michael, additional, Blüthgen, Nico, additional, Farwig, Nina, additional, Hervías‐Parejo, Sandra, additional, Mironov, Sergei, additional, Rodríguez‐Echeverría, Susana, additional, and Heleno, Ruben, additional

Published
2022
Full Text
View/download PDF

16. Honey bees (Apis mellifera) modify plant-pollinator network structure, but do not alter wild species' interactions.

Author

Worthy, Sydney H., Acorn, John H., and Frost, Carol M.

Subjects
HONEYBEES, POLLINATORS, COMMUNITIES, SPECIES, HONEY, ORCHIDS
Abstract

Honey bees (Apis mellifera) are widely used for honey production and crop pollination, raising concern for wild pollinators, as honey bees may compete with wild pollinators for floral resources. The first sign of competition, before changes appear in wild pollinator abundance or diversity, may be changes to wild pollinator interactions with plants. Such changes for a community can be measured by looking at changes to metrics of resource use overlap in plant-pollinator interaction networks. Studies of honey bee effects on plant-pollinator networks have usually not distinguished whether honey bees alter wild pollinator interactions, or if they merely alter total network structure by adding their own interactions. To test this question, we experimentally introduced honey bees to a Canadian grassland and measured plant-pollinator interactions at varying distances from the introduced hives. We found that honey bees increased the network metrics of pollinator and plant functional complementarity and decreased interaction evenness. However, in networks constructed from just wild pollinator interactions, honey bee abundance did not affect any of the metrics calculated. Thus, all network structural changes to the full network (including honey bee interactions) were due only to honey bee-plant interactions, and not to honey bees causing changes in wild pollinator-plant interactions. Given widespread and increasing use of honey bees, it is important to establish whether they affect wild pollinator communities. Our results suggest that honey bees did not alter wild pollinator foraging patterns in this system, even in a year that was drier than the 20-year average. [ABSTRACT FROM AUTHOR]

Published
2023
Full Text
View/download PDF

17. Tripartite networks show that keystone species can multitask.

Author

Timóteo, Sérgio, Albrecht, Jörg, Rumeu, Beatriz, Norte, Ana C., Traveset, Anna, Frost, Carol M., Marchante, Elizabete, López‐Núñez, Francisco A., Peralta, Guadalupe, Memmott, Jane, Olesen, Jens M., Costa, José M., da Silva, Luís P., Carvalheiro, Luísa G., Correia, Marta, Staab, Michael, Blüthgen, Nico, Farwig, Nina, Hervías‐Parejo, Sandra, and Mironov, Sergei

Subjects
KEYSTONE species, ECOLOGICAL resilience, PREDATION, PERIODICAL articles, ECOLOGICAL niche
Abstract

Copyright of Functional Ecology is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Published
2023
Full Text
View/download PDF

21. Tripartite networks show that keystone species can multitask

Author

Timóteo, Sérgio, primary, Albrecht, Jörg, additional, Rumeu, Beatriz, additional, Norte, Ana C., additional, Traveset, Anna, additional, Frost, Carol M., additional, Marchante, Elizabete, additional, López-Núñez, Francisco A., additional, Peralta, Guadalupe, additional, Memmott, Jane, additional, Olesen, Jens M., additional, Costa, José M., additional, da Silva, Luís P., additional, Carvalheiro, Luísa G., additional, Correia, Marta, additional, Staab, Michael, additional, Blüthgen, Nico, additional, Farwig, Nina, additional, Hervías-Parejo, Sandra, additional, Mironov, Sergei, additional, Rodríguez-Echeverría, Susana, additional, and Heleno, Ruben, additional

Published
2021
Full Text
View/download PDF

22. New records for hoverflies (Diptera: Syrphidae) in Alberta, Canada

Author

Pizante, Rachel, Frost, Carol M., and Acorn, John H.

Abstract

AbstractLittle is known about the distribution and natural history of hoverflies (Diptera: Syrphidae) in western Canada. Filling in knowledge gaps and tracking this potentially changing fauna are important because hoverflies are likely important pollinators and are natural pest control agents for crops. Hoverflies were collected using Malaise traps placed near fields seeded to canola in central Alberta from May to August 2021. Platycheirus varipesCurran represents a new species record for Alberta. Two species of conservation concern and two species with extremely limited collection records were also collected. A species that was previously found only in mountainous regions and another three species whose Albertan records consisted only of iNaturalist records were found.

Published
2024
Full Text
View/download PDF

24. Persist or Produce: A Community Trade-Off Tuned by Species Evenness

Author

Rohr, Rudolf P; https://orcid.org/0000-0002-6440-2696, Saavedra, Serguei; https://orcid.org/0000-0003-1768-363X, Peralta, Guadalupe, Frost, Carol M; https://orcid.org/0000-0003-3805-5528, Bersier, Louis-Félix; https://orcid.org/0000-0001-9552-8032, Bascompte, Jordi; https://orcid.org/0000-0002-0108-6411, Tylianakis, Jason M; https://orcid.org/0000-0001-7402-5620, Rohr, Rudolf P; https://orcid.org/0000-0002-6440-2696, Saavedra, Serguei; https://orcid.org/0000-0003-1768-363X, Peralta, Guadalupe, Frost, Carol M; https://orcid.org/0000-0003-3805-5528, Bersier, Louis-Félix; https://orcid.org/0000-0001-9552-8032, Bascompte, Jordi; https://orcid.org/0000-0002-0108-6411, and Tylianakis, Jason M; https://orcid.org/0000-0001-7402-5620

Abstract

Understanding the effects of biodiversity on community persistence and productivity is key to managing both natural and production systems. Because rare species face greater danger of extinction, species evenness, a measure of how similar abundances are across species in a community, is seen as a key component of biodiversity. However, previous studies have failed to find a consistent association of species evenness with species survival and biomass production. Here we provide a theoretical framework for the relationship among these three elements. We demonstrate that the lack of consistent outcomes is not an idiosyncratic artifact of different studies but can be unified under one common framework. Applying a niche theory approach, we confirm that under demographic stochasticity evenness is a general indicator of the risk of future species extinctions in a community, in accordance with the majority of empirical studies. In contrast, evenness cannot be used as a direct indicator of the level of biomass production in a community. When a single species dominates, as expressed by the constraints imposed by the population dynamics, biomass production depends on the niche position of the dominating species and can increase or decrease with evenness. We demonstrate that high species evenness and an intermediate level of biomass production is the configuration that maximizes the average species survival probability in response to demographic stochasticity.

Published
2016

28. Abiotic conditions rather than resource availability cues determine aerial dispersal behaviour in spiderlings of Dolomedes triton(Araneae: Pisauridae)

Author

Frost, Carol M., Graham, Alice K., and Spence, John R.

Abstract

AbstractMany species respond to risks and benefits of dispersal that vary over the short term through condition-dependent dispersal. We used wind tunnels to investigate how abiotic factors, spiderling age, and indicators of environmental quality affect aerial dispersal behaviour of spiderlings in Dolomedes triton(Walckenaer) (Araneae: Pisauridae), a denizen of temporary habitats. More than half of all spiderlings exhibited preballooning, ballooning, or spanning behaviours. Warm temperatures (>22.5 °C) and low wind speeds (<2.0 m/second) increased aerial dispersal. Aerial dispersal behaviour increased significantly until 5 days after hatch, after which it decreased, coinciding with the onset of active hunting by spiderlings. In contrast, cues about ambient food availability (egg sac number and food limitation of the mother) and potential resource competition or risk of cannibalism (conspecific density) did not affect aerial dispersal propensity. Offspring from different females ballooned in different proportions, except at the peak of dispersal, but a female's reproductive output and propensity of her offspring to balloon were uncorrelated. Thus, it appears that spiderlings of D. tritonadopt a fixed strategy of high dispersal rate under optimal abiotic conditions, rather than reducing dispersal in response to cues about local food availability or conspecific density.

Published
2013
Full Text
View/download PDF

29. Persist or produce: a community trade-off tuned by species evenness

Author

Rohr, Rudolf P., Saavedra, Serguei, Peralta, Guadalupe, Frost, Carol M., Bersier, Louis-Félix, Bascompte, Jordi, Tylianakis, Jason M., Rohr, Rudolf P., Saavedra, Serguei, Peralta, Guadalupe, Frost, Carol M., Bersier, Louis-Félix, Bascompte, Jordi, and Tylianakis, Jason M.

Abstract

Understanding the effects of biodiversity on community persistence and productivity is key to managing both natural and production systems. Because rare species face greater danger of extinction, species evenness, a measure of how similar abundances are across species in a community, is seen as a key component of biodiversity. However, previous studies have failed to find a consistent association of species evenness with species survival and biomass production. Here we provide a theoretical framework for the relationship among these three elements. We demonstrate that the lack of consistent outcomes is not an idiosyncratic artifact of different studies but can be unified under one common framework. Applying a niche theory approach, we confirm that under demographic stochasticity evenness is a general indicator of the risk of future species extinctions in a community, in accordance with the majority of empirical studies. In contrast, evenness cannot be used as a direct indicator of the level of biomass production in a community. When a single species dominates, as expressed by the constraints imposed by the population dynamics, biomass production depends on the niche position of the dominating species and can increase or decrease with evenness. We demonstrate that high species evenness and an intermediate level of biomass production is the configuration that maximizes the average species survival probability in response to demographic stochasticity.

Catalog

Books, media, physical & digital resources
See catalog results