A new native plant in the neighborhood: effects on plant–pollinator networks, pollination, and plant reproductive success

Ecology ◽  
2020 ◽  
Vol 101 (7) ◽  
Author(s):  
Carlos Hernández‐Castellano ◽  
Anselm Rodrigo ◽  
José María Gómez ◽  
Constantí Stefanescu ◽  
Juan Antonio Calleja ◽  
...  
Keyword(s):  
Reproductive Success ◽  
Neighborhood Effects ◽  
Native Plant ◽  
Plant Reproductive Success ◽  
Plant Pollinator

scholarly journals A New Native Plant in the Neighborhood: Effects on Plant–Pollinator Networks, Pollination, and Plant Reproductive Success

2020 ◽  
Vol 101 (3) ◽  
Author(s):  
Carlos Hernández‐Castellano ◽  
Anselm Rodrigo ◽  
José María Gómez ◽  
Constantí Stefanescu ◽  
Juan Antonio Calleja ◽  
...  
Keyword(s):  
Reproductive Success ◽  
Neighborhood Effects ◽  
Native Plant ◽  
Plant Reproductive Success ◽  
Plant Pollinator

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.

scholarly journals Best in the company of nearby males: female success in the threatened cycad,Zamia portoricensis

PeerJ ◽  
2018 ◽  
Vol 6 ◽  
pp. e5252 ◽  
Author(s):  
Julio C. Lazcano-Lara ◽  
James D. Ackerman
Keyword(s):  
Spatial Distribution ◽  
Reproductive Success ◽  
Sex Ratios ◽  
Mate Finding ◽  
Plant Reproductive Success ◽  
Successful Recruitment ◽  
Males And Females ◽  
Plant Pollinator ◽  
Two Populations ◽  
Operational Sex Ratios

Variation in plant reproductive success is affected by ecological conditions including the proximity of potential mates. We address the hypothesis that spatial distribution of sexes affects female reproductive success (RS) in the dioecious cycad,Zamia portoricensis.Are the frequencies of males, operational sex ratios, and distances to the nearest mate associated with RS in females? We studied the spatial distribution of sexes in two populations in Puerto Rico and compared RS of target females with the number of males and operational sex ratios. Population structure suggests regular successful recruitment. Adults, males, and females were randomly distributed with respect to one another. Reproductive success of females was highly variable, but was higher in neighborhoods with more males than females and generally decreased with increasing distance to the nearest male, becoming statistically significant beyond 190 cm. This possible mate-finding Allee effect indicates that pollinator movement among plants may be limited for this mutually dependent plant-pollinator interaction. Yet being close to male plants is a matter of chance, perhaps a factor generating the high intra-population genetic diversity inZ. portoricensis.

scholarly journals The role of individual variation in flowering and pollination in the reproductive success of a crepuscular buzz-pollinated plant

2020 ◽  
Author(s):  
Natalia Costa Soares ◽  
Pietro Kiyoshi Maruyama ◽  
Vanessa Graziele Staggemeier ◽  
Leonor Patrícia Cerdeira Morellato ◽  
Márcio Silva Araújo
Keyword(s):  
Reproductive Success ◽  
Flowering Phenology ◽  
Southeastern Brazil ◽  
Individual Specialization ◽  
Plant Reproductive Success ◽  
Pollinator Specialization ◽  
The Individual ◽  
Pollination Systems ◽  
Plant Pollinator

Abstract Background and Aims Plant individuals within a population differ in their phenology and interactions with pollinators. However, it is still unknown how individual differences affect the reproductive success of plants that have functionally specialized pollination systems. Here, we evaluated whether plant individual specialization in phenology (temporal specialization) and in pollination (pollinator specialization) affect the reproductive success of the crepuscular-bee-pollinated plant Trembleya laniflora (Melastomataceae). Methods We quantified flowering activity (amplitude, duration and overlap), plant–pollinator interactions (number of flowers visited by pollinators) and reproductive success (fruit set) of T. laniflora individuals from three distinct locations in rupestrian grasslands of southeastern Brazil. We estimated the degree of individual temporal specialization in flowering phenology and of individual specialization in plant–pollinator interactions, and tested their relationship with plant reproductive success. Key Results Trembleya laniflora presented overlapping flowering, a temporal generalization and specialized pollinator interactions. Flowering overlap among individuals and populations was higher than expected by chance but did not affect the individual interactions with pollinators and nor their reproductive success. In contrast, higher individual generalization in the interactions with pollinators was related to higher individual reproductive success. Conclusions Our findings suggest that individual generalization in plant–pollinator interaction reduces the potential costs of specialization at the species level, ensuring reproductive success. Altogether, our results highlight the complexity of specialization/generalization of plant–pollinator interactions at distinct levels of organization, from individuals to populations, to species.

Reproductive success of Cardiopetalum calophyllum (Annonaceae) treelets in fragments of Brazilian savanna

2012 ◽  
Vol 28 (3) ◽  
pp. 317-320 ◽  
Author(s):  
Marcos Antônio da Silva Elias ◽  
Edivani Villaron Franceschinelli ◽  
Leandro Juen ◽  
Fábio Julio Alves Borges ◽  
Glalko Machado Ferreira ◽  
...  
Keyword(s):  
Reproductive Success ◽  
Reproductive Output ◽  
Fragment Size ◽  
Ecosystem Processes ◽  
Brazilian Savanna ◽  
Habitat Isolation ◽  
Agricultural Activity ◽  
Negative Effects ◽  
Plant Reproductive Success ◽  
Plant Pollinator

Habitat fragmentation may affect essential ecosystem processes, such as pollination, causing negative effects on plants and pollinators (Aizen & Feinsinger 1994, Jennersten 1988, Lennartsson 2002, Liow et al. 2001, Murcia 1996). Effects of fragmentation on plant–pollinator interaction were evaluated in several studies (Aguirre & Dirzo 2008, Dauber et al. 2010, Dick 2001, Donaldson et al. 2002, Dunley et al. 2009, Fuchs et al. 2003, Ghazoul & McLeish 2001, Lopes & Buzato 2007). The Brazilian savanna, called cerrado, has been fragmented due in large part to extensive agricultural activity (Carvalho et al. 2009). Studies with the main objective of evaluating the influence of fragment size on ecosystem processes and on plant reproductive output has not been determined in cerrado. The plants of this type of vegetation seem to produce generally low number of fruits per flower (Gribel & Hay 1993, Munin et al. 2008, Ortiz et al. 2003). This may be due to the low soil fertility (Franco 2002, Haridasan 2000). But the recent fragmentation of this biome may reduce even more their plant reproductive success because it can increase the effect of pollination limitation and inbreeding caused by the habitat isolation and degradation.

scholarly journals Florivory by lizards on Tacinga inamoena (K.Schum.) N.P.Taylor & Stuppy (Cactaceae) in the Brazilian Caatinga

2021 ◽  
Vol 21 (2) ◽  
Author(s):  
Virgínia Helen Figueiredo Paixão ◽  
Vanessa Gabrielle Nóbrega Gomes ◽  
Eduardo Martins Venticinque
Keyword(s):  
Reproductive Success ◽  
Fruit Set ◽  
Negative Impact ◽  
Camera Traps ◽  
Long Term Effects ◽  
Plant Reproductive Success ◽  
Reproductive Structures ◽  
Plant Pollinator ◽  
Fruit Formation

Abstract: Florivory can alter plant reproductive success by damaging sexual reproductive structures and disrupting plant-pollinator interactions through decreased flower attractiveness. Here, we report new records of the cactus Tacinga inamoena flower consumption by the Tropidurus hispidus lizard in the Brazilian Caatinga. We monitored 53 flowers from 11 T. inamoena individuals with camera traps over a 1-year period, totalling 450 camera-days of sample effort. We detected four florivory events. In three of these events, flowers were entirely consumed or had their reproductive structures severely damaged, leading to no fruit formation. Florivory events occurred in the morning, right after anthesis, in flowers near the ground, and lizards did not climb the cactus. Our results suggest that T. hispidus florivory on T. inamoena could have a negative impact on fruit set, since the consumed flowers were entirely destroyed. However, the long-term effects of florivory by lizards on T. inamoena reproductive success in the Caatinga still needs to be elucidated.

scholarly journals Community level individual-based plant-pollinator networks unveil pollen flow dynamics and plant reproductive success

2021 ◽  
Author(s):  
Alfonso Allen-Perkins ◽  
María Hurtado ◽  
David García-Callejas ◽  
Oscar Godoy ◽  
Ignasi Bartomeus
Keyword(s):  
Reproductive Success ◽  
Plant Species ◽  
Individual Plant ◽  
Ecological Communities ◽  
Ecological Processes ◽  
Individual Level ◽  
Heterospecific Pollen ◽  
Plant Reproductive Success ◽  
The Individual ◽  
Plant Pollinator

Ecological networks are a widely used tool to understand the dynamics of ecological communities in which plants interact with their pollinator counterparts. However, while most mutualistic networks have been defined at the species level, ecological processes, such as pollination, take place at the individual level. This recognition has led to the development of individual-based networks, yet current approaches only account for individuals of a single plant species due to conceptual and mathematical limitations. Here, we introduce a multilayer framework designed to depict the conspecific and heterospecific pollen flows mediated by floral visitors among plant individuals belonging to different species. Pollen transfer is modeled as a transport-like system, where an ensemble of conspecific plant-pollinator “circuits” are coupled through pollinators. With this physical conceptualization of ecological processes, we investigate how the reproductive success of plant individuals is affected by the overall dynamics of the whole multilayer network (macrostructure), as well as by their local position within the network (mesostructure). To illustrate this multiscale analysis, we apply it to a dataset of nine well-resolved individual plant-pollinator interaction networks from annual plant grasslands. Our results show that the resulting individual-based networks are highly modular, with insect visitors effectively connecting individuals of the same and different plant species. We also obtain empirical evidence that network structure is critical for modulating individual plant reproduction. In particular, the mesoscale level is the best descriptor of plant reproductive success, as it integrates the net effect of local heterospecific and conspecific interactions on seed production of a given individual. We provide a simple, but robust set of metrics to scale down network ecology to functioning properties at the individual level, where most ecological processes take place, hence moving forward the description and interpretation of multitrophic communities across scales.

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