scholarly journals Niche complementarity among pollinators increases community-level plant reproductive success

2021 ◽  
Vol 1 ◽  
pp. 1-None
Author(s):  
Ainhoa Magrach ◽  
Francisco P. Molina ◽  
Ignasi Bartomeus
Keyword(s):  
Reproductive Success ◽  
Community Level ◽  
Niche Complementarity ◽  
Plant Reproductive Success

scholarly journals Niche complementarity among pollinators increases community-level plant reproductive success

2019 ◽  
Author(s):  
Ainhoa Magrach ◽  
Francisco P. Molina ◽  
Ignasi Bartomeus
Keyword(s):  
Reproductive Success ◽  
Plant Species ◽  
Species Interactions ◽  
Community Level ◽  
Pollinator Visitation ◽  
Niche Complementarity ◽  
Pollinator Diversity ◽  
Plant Reproductive Success ◽  
Positive Effects ◽  
Plant Pollinator

AbstractOur understanding of how the structure of species interactions shapes natural communities has increased, particularly regarding plant-pollinator interactions. However, research linking pollinator diversity to reproductive success has focused on pairwise plant-pollinator interactions, largely overlooking community-level dynamics. Here, we present one of the first empirical studies linking pollinator visitation to plant reproduction from a community-wide perspective. We use a well-replicated dataset encompassing 16 plant-pollinator networks and data on reproductive success for 19 plant species from Mediterranean shrub ecosystems. We find that statistical models including simple visitation metrics are sufficient to explain the variability observed. However, a mechanistic understanding of how pollinator diversity affects reproductive success requires additional information on network structure. Specifically, we find positive effects of increasing complementarity in the plant species visited by different pollinators on plant reproductive success. Hence, maintaining communities with a diversity of species but also of functions is paramount to preserving plant diversity.

Factors affecting pollinator visitation and reproductive success in Sonneratia caseolaris and Aegiceras corniculatum in a mangrove forest in India

2001 ◽  
Vol 17 (3) ◽  
pp. 431-447 ◽  
Author(s):  
SHALINI PANDIT ◽  
B. C. CHOUDHURY
Keyword(s):  
Reproductive Success ◽  
Mangrove Forest ◽  
Time Of Day ◽  
Pollinator Visitation ◽  
Aegiceras Corniculatum ◽  
Factors Affecting ◽  
Plant Reproductive Success ◽  
Sonneratia Caseolaris ◽  
Exclusion Experiments ◽  
Selfing Species

Pollinator visitation to, and the reproductive success of, Sonneratia caseolaris (Sonneratiaceae) and Aegiceras corniculatum (Myrsinaceae) was investigated in a mangrove forest in India. S. caseolaris was shown to be primarily outcrossed and A. corniculatum was shown to be a selfing species. The flowers of both plant species attracted several diurnal and nocturnal visitors. Earlier reports had indicated that S. caseolaris flowered for one night and was exclusively night-pollinated. But flowers of this species were found to be in bloom both at night and during the day, and diurnal visitors to the flowers were more diverse and frequent than nocturnal ones. This was related to the higher volume and energy value of nectar in the morning. The effects of time of day and temperature on visitation rates were quantified. The importance of visitors to plant reproductive success was investigated via controlled visitor-exclusion experiments. Pollinators were expected to be more important for the outcrossing species than for the selfing species, and this was confirmed by the results of the exclusion experiments. In S. caseolaris reproductive success was determined both by pollinator availability and the intensity of flower and fruit predation, while in A. corniculatum it is likely to be resource limited.

Reproductive success of wind, generalist, and specialist pollinated plant species following wildfire in desert landscapes

2017 ◽  
Vol 26 (12) ◽  
pp. 1030 ◽  
Author(s):  
Andrew H. Lybbert ◽  
Justin Taylor ◽  
Alysa DeFranco ◽  
Samuel B. St Clair
Keyword(s):  
Reproductive Success ◽  
Plant Species ◽  
Mojave Desert ◽  
Fruit Production ◽  
Native Plant ◽  
Pollination Services ◽  
Generalist Species ◽  
Plant Reproductive Success ◽  
Show Evidence ◽  
Specialist Species

Wildfire can drastically affect plant sexual reproductive success in plant–pollinator systems. We assessed plant reproductive success of wind, generalist and specialist pollinated plant species along paired unburned, burned-edge and burned-interior locations of large wildfires in the Mojave Desert. Flower production of wind and generalist pollinated plants was greater in burned landscapes than adjacent unburned areas, whereas specialist species responses were more neutral. Fruit production of generalist species was greater in burned landscapes than in unburned areas, whereas fruit production of wind- and specialist-pollinated species showed no difference in burned and unburned landscapes. Plants surviving in wildfire-disturbed landscapes did not show evidence of pollination failure, as measured by fruit set and seed:ovule ratios. Generalist- and specialist-plant species established in the interior of burned landscapes showed no difference in fruit production than plants established on burned edges suggesting that pollination services are conserved with increasing distance from fire boundaries in burned desert landscapes. Stimulation of plant reproduction in burned environments due to competition release may contribute to the maintenance of pollinator services and re-establishment of the native plant community in post-fire desert environments.

The impact of flower-dwelling predators on host plant reproductive success

Oecologia ◽  
2010 ◽  
Vol 164 (2) ◽  
pp. 411-421 ◽  
Author(s):  
Andrew D. Higginson ◽  
Graeme D. Ruxton ◽  
John Skelhorn
Keyword(s):  
Reproductive Success ◽  
Host Plant ◽  
Plant Reproductive Success ◽  
The Impact

Recaching of Jeffrey pine (Pinus jeffreyi) seeds by yellow pine chipmunks (Tamias amoenus): potential effects on plant reproductive success

1998 ◽  
Vol 76 (1) ◽  
pp. 154-162 ◽  
Author(s):  
Stephen B.Vander Wall ◽  
Jamie W Joyner
Keyword(s):  
Reproductive Success ◽  
Sierra Nevada ◽  
Source Area ◽  
Pinus Jeffreyi ◽  
Nurse Plants ◽  
Plant Reproductive Success ◽  
Jeffrey Pine ◽  
Pine Seedlings ◽  
Tamias Amoenus ◽  
Yellow Pine

Animals that scatter-hoard seeds frequently dig up and recache them at new locations. The effect of the recaching of seeds on plant reproductive success was studied in the Sierra Nevada of western Nevada. The fate of 1000 individually marked Jeffrey pine (Pinus jeffreyi) seeds initially placed in 100 primary caches in a 10 x 10 array was monitored during autumn 1995 and spring 1996. Yellow pine chipmunks (Tamias amoenus) quickly removed nearly all of the seeds and recached many of them in 377 secondary caches containing 727 seeds. Later, rodents dug up most of these caches and transferred them to 213 tertiary caches (283 seeds), 75 quaternary caches (92 seeds), and 13 quintic (fifth order) caches (13 seeds). Overall, rodents ate 15.3% of the seeds they took from primary through quintic caches, and an additional 71.1% of the seeds disappeared, probably to underground runways and larders. During our spring survey of the study site, 133 seeds (13.6%) from 84 caches had germinated or were about to germinate. As rodents moved seeds from cache site to cache site, several changes occurred that potentially influenced the distribution and survival of Jeffrey pine seedlings. First, the number of seeds per cache decreased. Second, cached seeds were gradually moved farther from the source area. Third, the dispersal distance between successive cache sites decreased. Fourth, the distribution of cached seeds became more even. Lastly, more seeds were cached beneath shrubs, which serve as nurse plants for Jeffrey pine seedlings. Consequently, the movement of seeds between cache sites by chipmunks may increase the probability that Jeffrey pine seedlings will establish from rodent caches.

Variable nursery pollinator importance and its effect on plant reproductive success

Oecologia ◽  
2011 ◽  
Vol 168 (2) ◽  
pp. 439-448 ◽  
Author(s):  
Richard J. Reynolds ◽  
Abigail A. R. Kula ◽  
Charles B. Fenster ◽  
Michele R. Dudash
Keyword(s):  
Reproductive Success ◽  
Pollinator Importance ◽  
Plant Reproductive Success

Effects of flower production and predispersal seed predation on reproduction in Cirsium purpuratum

2000 ◽  
Vol 78 (2) ◽  
pp. 230-236 ◽  
Author(s):  
Kazuharu Ohashi ◽  
Tetsukazu Yahara
Keyword(s):  
Reproductive Success ◽  
Seed Predation ◽  
Population Level ◽  
Production Plant ◽  
Flower Number ◽  
Flower Production ◽  
Plant Reproductive Success ◽  
Predispersal Seed Predation ◽  
Animal Interaction ◽  
Mature Seeds

Researchers have often assumed that the reproductive success of a plant increases with flower production. However, if predispersal seed predation also increases with flower production, this may counteract the increase in reproductive success expected with such increased flower production. To investigate this, we examined the effect of flower number and predispersal seed predation on seed production in two field populations of Cirsium purpuratum (Maxim.) Matsum. At both sites, the proportion of seeds or heads preyed upon per plant increased with the number of flowers (florets or heads) on each plant, while the proportion of mature seeds per plant was independent of flower number per plant. Based on these results, we predicted that an increased level of seed predation at the population level would reduce the annual flower production of each plant. The observed pattern of flower production supported this prediction. Our results suggest that increased flower production may not always improve plant reproductive success under the influence of predispersal seed predation.Key words: plant reprodutive success, predispersal seed predation, Cirsium purpuratum, flower production, plant-animal interaction.

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