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19 results

Estimating pollinator performance of visitors to the self-incompatible crop-plant Brassica rapa by single visit deposition and pollen germination: a comparison of methods

Journal Article
Patchett, R., Ballantyne, G., & Willmer, P. (2017)
Estimating pollinator performance of visitors to the self-incompatible crop-plant Brassica rapa by single visit deposition and pollen germination: a comparison of methods. Journal of Pollination Ecology, 21(3), 78-85
Estimating the pollen-deposition effectiveness of flower visitors is fundamental to understanding their performance as pollinators. While estimates of visitation rates, pollen...

Why flower visitation is a poor proxy for pollination: measuring single-visit pollen deposition, with implications for pollination networks and conservation

Journal Article
King, C., Ballantyne, G., & Willmer, P. G. (2013)
Why flower visitation is a poor proxy for pollination: measuring single-visit pollen deposition, with implications for pollination networks and conservation. Methods in Ecology and Evolution, 4(9), 811-818. https://doi.org/10.1111/2041-210x.12074
Summary The relative importance of specialized and generalized plant-pollinator relationships is contentious, yet analyses usually avoid direct measures of pollinator quality ...

Floral visitors and ant scent marks: noticed but not used?

Journal Article
Ballantyne, G., & Willmer, P. (2012)
Floral visitors and ant scent marks: noticed but not used?. Ecological Entomology, 37(5), 402-409. https://doi.org/10.1111/j.1365-2311.2012.01378.x
1. Bee behaviour when visiting flowers is mediated by diverse chemical cues and signals, from the flower itself and from previous visitors to the flower. Flowers recently visi...

Nectar Theft and Floral Ant-Repellence: A Link between Nectar Volume and Ant-Repellent Traits?

Journal Article
Ballantyne, G., & Willmer, P. (2012)
Nectar Theft and Floral Ant-Repellence: A Link between Nectar Volume and Ant-Repellent Traits?. PLOS ONE, 7(8), https://doi.org/10.1371/journal.pone.0043869
As flower visitors, ants rarely benefit a plant. They are poor pollinators, and can also disrupt pollination by deterring other flower visitors, or by stealing nectar. Some pl...

Developing an empirical approach to optimal camera-trap deployment at mammal resting sites: evidence from a longitudinal study of an otter Lutra lutra holt

Journal Article
Findlay, M., Briers, R., Diamond, N., & White, P. (2017)
Developing an empirical approach to optimal camera-trap deployment at mammal resting sites: evidence from a longitudinal study of an otter Lutra lutra holt. European journal of wildlife research, 63(6),
The study of nocturnal mammals relies on indirect evidence or invasive methods involving capture and tagging of individuals. Indirect methods are prone to error, while capture...

Primary Production and Carbon uptake dynamics in the vicinity of south Georgia - balancing carbon fixation and removal

Journal Article
Gilpin, L., Priddle, J., Whitehouse, M., Savidge, G., & Atkinson, A. (2002)
Primary Production and Carbon uptake dynamics in the vicinity of south Georgia - balancing carbon fixation and removal. Marine Ecology Progress Series, 242, 51-62. https://doi.org/10.3354/meps242051
Primary production was measured at a series of stations in austral summer 1996 in the vicinity of South Georgia. Five stations were occupied along a 700 km transect southeastw...

The relationship between carbon and biovolume in marine microbial mesocosms under different nutrient regimes

Journal Article
Davidson, K., Roberts, E., & Gilpin, L. (2002)
The relationship between carbon and biovolume in marine microbial mesocosms under different nutrient regimes. European Journal of Phycology, 37(4), 501-507. https://doi.org/10.1017/s096702620200389x
Nutrient manipulation experiments were conducted on a natural planktonic community in outdoor mesocosms. Inorganic nitrogen (N) and silicon (Si) were added to achieve N: Si ra...

Response of temperate microplankton communities to N:Si ratio perturbation

Journal Article
Roberts, E. C., Davidson, K., & Gilpin, L. (2003)
Response of temperate microplankton communities to N:Si ratio perturbation. Journal of plankton research, 25(12), 1485-1495. https://doi.org/10.1093/plankt/fbg109
In order to study the effect of the nitrogen:silicon (N:Si) ratio on temperate microplankton food webs, mesocosm experiments were conducted in Trondheim (Norway) using two dif...

Seasonal influences on size-fractionated chlorophyll a concentrations and primary production in the north-west Indian Ocean

Journal Article
Savidge, G., & Gilpin, L. (1999)
Seasonal influences on size-fractionated chlorophyll a concentrations and primary production in the north-west Indian Ocean. Deep Sea Research Part II Topical Studies in Oceanography, 46(3-4), 701-723. https://doi.org/10.1016/S0967-0645%2898%2900124-6
Chlorophyll a (chl a) concentrations and primary production by the 0.2—2, 2—18 and >18 m phytoplankton size-fractions were estimated along a transect in the NW Indian Ocean ex...

Archigregarines of the English Channel revisited: New molecular data on Selenidium species including early described and new species and the uncertainties of phylogenetic relationships

Journal Article
Rueckert, S., & Horák, A. (2017)
Archigregarines of the English Channel revisited: New molecular data on Selenidium species including early described and new species and the uncertainties of phylogenetic relationships. PLOS ONE, 12(11), https://doi.org/10.1371/journal.pone.0187430
Background Gregarines represent an important transition step from free-living predatory (colpodellids s.l.) and/or photosynthetic (Chromera and Vitrella) apicomplexan lineage...