1
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Duncan GD, Ellis AG, Forest F, Verboom GA. Strong habitat and seasonal phenology effects on the evolution of self-compatibility, clonality and pollinator shifts in Lachenalia (Asparagaceae: Scilloideae). THE NEW PHYTOLOGIST 2024. [PMID: 38702970 DOI: 10.1111/nph.19786] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/12/2023] [Accepted: 04/09/2024] [Indexed: 05/06/2024]
Abstract
Plants employ a diversity of reproductive safeguarding strategies to circumvent the challenge of pollen limitation. Focusing on southern African Lachenalia (Asparagaceae: Scilloideae), we test the hypothesis that the evolution of reproductive safeguarding traits (self-compatibility, autonomous selfing, bird pollination and clonal propagation) is favoured in species occupying conditions of low insect abundance imposed by critically infertile fynbos heathland vegetation and by flowering outside the austral spring insect abundance peak. We trace the evolution of these traits and selective regimes on a dated, multi-locus phylogeny of Lachenalia and assess their evolutionary associations using ordinary and phylogenetic regression. Ancestral state reconstructions identify an association with non-fynbos vegetation and spring flowering as ancestral in Lachenalia, the transition to fynbos vegetation and non-spring flowering taking place multiple times. They also show that self-compatibility, autofertility, bird pollination and production of multiple clonal offsets have evolved repeatedly. Regression models suggest that bird pollination and self-compatibility are selected for in fynbos and in non-spring flowering lineages, with autofertility being positively associated with non-spring flowering. These patterns support the interpretation of these traits as reproductive safeguarding adaptations under reduced insect pollinator abundance. We find no evidence to support the interpretation of clonal propagation as a reproductive safeguarding strategy.
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Affiliation(s)
- Graham D Duncan
- Bolus Herbarium and Department of Biological Sciences, University of Cape Town, 7701, Rhodes Gift, South Africa
- Kirstenbosch National Botanical Garden, South African National Biodiversity Institute, 99 Rhodes Ave, Newlands, Cape Town, 7700, South Africa
| | - Allan G Ellis
- Department of Botany and Zoology, Stellenbosch University, Matieland, 7602, South Africa
| | - Félix Forest
- Royal Botanic Gardens, Kew, Richmond, TW9 3AE, Surrey, UK
| | - G Anthony Verboom
- Bolus Herbarium and Department of Biological Sciences, University of Cape Town, 7701, Rhodes Gift, South Africa
- Department of Biology and Environmental Science, University of Gothenburg, 40530, Gothenburg, Sweden
- Gothenburg Botanical Garden (Botaniska), 41319, Gothenburg, Sweden
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2
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Dellinger AS, Hamilton AM, Wessinger CA, Smith S. Opposing Patterns of Altitude-Driven Pollinator Turnover in the Tropical and Temperate Americas. Am Nat 2023; 202:152-165. [PMID: 37531276 PMCID: PMC7614872 DOI: 10.1086/725017] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/04/2023]
Abstract
AbstractAbiotic factors (e.g., temperature, precipitation) vary markedly along elevational gradients and differentially affect major groups of pollinators. Ectothermic bees, for example, are impeded in visiting flowers by cold and rainy conditions common at high elevations, while endothermic hummingbirds may continue foraging under such conditions. Despite the possibly far-reaching effects of the abiotic environment on plant-pollinator interactions, we know little about how these factors play out at broad ecogeographic scales. We address this knowledge gap by investigating how pollination systems vary across elevations in 26 plant clades from the Americas. Specifically, we explore Cruden's 1972 hypothesis that the harsh montane environment drives a turnover from insect to vertebrate pollination at higher elevations. We compared the elevational distribution and bioclimatic attributes for a total of 2,232 flowering plants and found that Cruden's hypothesis holds only in the tropics. Above 30°N and below 30°S, plants pollinated by vertebrates (mostly hummingbirds) tend to occur at lower elevations than those pollinated by insects. We hypothesize that this latitudinal transition is due to the distribution of moist, forested habitats favored by vertebrate pollinators, which are common at high elevations in the tropics but not in the temperate Americas.
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3
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Li Y, Mbata GN, Simmons AM. Population Dynamics of Insect Pests and Beneficials on Different Snap Bean Cultivars. INSECTS 2023; 14:230. [PMID: 36975915 PMCID: PMC10054361 DOI: 10.3390/insects14030230] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/12/2023] [Revised: 02/15/2023] [Accepted: 02/20/2023] [Indexed: 06/18/2023]
Abstract
Snap bean is an important crop in the United States. Insecticides are commonly used against pests on snap bean, but many pests have developed resistance to the insecticides and beneficials are threatened by the insecticides. Therefore, host plant resistance is a sustainable alternative. Population dynamics of insect pests and beneficials were assessed on 24 snap bean cultivars every week for six weeks. The lowest number of sweetpotato whitefly (Bemisia tabaci) eggs was observed on cultivar 'Jade', and the fewest nymphs were found on cultivars 'Gold Mine', 'Golden Rod', 'Long Tendergreen', and 'Royal Burgundy'. The numbers of potato leafhopper (Empoasca fabae) and tarnished plant bug (Lygus lineolaris) adults were the lowest on cultivars 'Greencrop' and 'PV-857'. The highest numbers of adults were found in Week 1 (25 days following plant emergence) for B. tabaci and Mexican bean beetle (Epilachna varivestis); Week 3 for cucumber beetle, kudzu bug (Megacopta cribraria), and E. fabae; Weeks 3 and 4 for thrips; Week 4 for L. lineolaris; and Weeks 5 and 6 for bees. Temperature and relative humidity correlated with B. tabaci, E. varivestis, bee, and predator ladybird beetle populations. These results provide valuable information on the integrated pest management of snap beans.
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Affiliation(s)
- Yinping Li
- Agricultural Research Station, Fort Valley State University, 1005 State University Drive, Fort Valley, GA 31030, USA
| | - George N. Mbata
- Agricultural Research Station, Fort Valley State University, 1005 State University Drive, Fort Valley, GA 31030, USA
| | - Alvin M. Simmons
- U.S. Vegetable Laboratory, U.S. Department of Agriculture-Agricultural Research Service, 2700 Savannah Highway, Charleston, SC 29414, USA
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4
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Fajemisin A, Kaur S, Vasquez A, Racelis A, Kariyat R. Can trap color affect arthropod community attraction in agroecosystems? A test using yellow vane and colorless traps. ENVIRONMENTAL MONITORING AND ASSESSMENT 2023; 195:366. [PMID: 36745291 DOI: 10.1007/s10661-023-10972-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2022] [Accepted: 01/27/2023] [Indexed: 06/18/2023]
Abstract
Vane trapping is one of the most effective methods for sampling flower-visiting arthropods. Despite its importance in pollinator studies, the effects of trap color on the abundance and richness of pollinators are less understood. To test this, we conducted a 3-season field experiment over 2 years with two types of vane traps: yellow and colorless. We set up twelve traps each in three field sites within the Lower Rio Grande Valley in south Texas, planted with Vigna unguiculata, Crotalaria juncea, Raphanus raphanistrum, and Sorghum drummondii. At each site, six colorless vane and six yellow vane traps were placed equidistant from each other. The experiment was replicated three times across three seasons, first during the pre-flowering season, when the crops were in full bloom, and when there was no crop on the field. In total, we collected 1912 insects, out of which 76.7% were pollinators. Generalized Linear Regression analyses showed that yellow traps consistently attracted significantly more arthropods and pollinators, but these differences were also season dependent. Furthermore, we noticed that Hymenoptera, followed by Coleoptera, were the most prevalent orders in both the yellow vane and colorless vane traps. Interestingly, although there was no significant difference in species richness of the arthropods in the yellow and colorless vane traps, our results suggest that trap color plays a significant role in capturing pollinators, including non-target arthropods. Our data add another line of evidence suggesting that trap color should be accounted for designing experiments that estimate pollinator and arthropod community diversity.
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Affiliation(s)
- Adegboyega Fajemisin
- School of Earth Environmental and Marine Sciences, University of Texas Rio Grande Valley, Edinburg, TX, 78539, USA
| | - Satinderpal Kaur
- Department of Biology, University of Texas Rio Grande Valley, Edinburg, TX, 78539, USA
| | - Alejandro Vasquez
- Department of Biology, University of Texas Rio Grande Valley, Edinburg, TX, 78539, USA
| | - Alexis Racelis
- School of Earth Environmental and Marine Sciences, University of Texas Rio Grande Valley, Edinburg, TX, 78539, USA
- Department of Biology, University of Texas Rio Grande Valley, Edinburg, TX, 78539, USA
| | - Rupesh Kariyat
- Department of Entomology and Plant Pathology, University of Arkansas, Fayetteville, AR, 72701, USA.
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5
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Cristóbal-Pérez EJ, Barrantes G, Cascante-Marín A, Madrigal-Brenes R, Hanson P, Fuchs EJ. Blooming plant species diversity patterns in two adjacent Costa Rican highland ecosystems. PeerJ 2023; 11:e14445. [PMID: 36650840 PMCID: PMC9840854 DOI: 10.7717/peerj.14445] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2022] [Accepted: 11/01/2022] [Indexed: 01/13/2023] Open
Abstract
The Costa Rican Paramo is a unique ecosystem with high levels of endemism that is geographically isolated from the Andean Paramos. Paramo ecosystems occur above Montane Forests, below the permanent snow level, and their vegetation differs notably from that of adjacent Montane Forests. We compared the composition and beta diversity of blooming plant species using phenological data from functional plant groups (i.e., insect-visited, bird-visited and insect + bird-visited plants) between a Paramo and a Montane Forest site in Costa Rica and analyzed seasonal changes in blooming plant diversity between the rainy and dry seasons. Species richness was higher in the Montane Forest for all plant categories, except for insect-visited plants, which was higher in the Paramo. Beta diversity and blooming plant composition differed between both ecosystems and seasons. Differences in species richness and beta diversity between Paramo and the adjacent Montane Forest are likely the result of dispersal events that occurred during the last glacial period and subsequent isolation, as climate turned to tropical conditions after the Pleistocene, and to stressful abiotic conditions in the Paramo ecosystem that limit species establishment. Differences in blooming plant composition between both ecosystems and seasons are likely attributed to differential effects of climatic cues triggering the flowering events in each ecosystem, but phylogenetic conservatism cannot be discarded. Analyses of species composition and richness based on flowering phenology data are useful to evaluate potential floral resources for floral visitors (insects and birds) and how these resources change spatially and temporarily in endangered ecosystems such as the Paramo.
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Affiliation(s)
- E. Jacob Cristóbal-Pérez
- Centro de Investigación en Biodiversidad y Ecología Tropical, Universidad de Costa Rica, San José, Costa Rica,Laboratorio Nacional de Análisis y Síntesis Ecológica/Escuela Nacional de Estudios Superiores Unidad Morelia, Universidad Nacional Autónoma de México, Morelia, Michoacán, Mexico,Laboratorio Binacional de Análisis y Síntesis Ecológica UNAM-UCR, Universidad Nacional Autónoma de México, Universidad de Costa Rica, Morelia, Michoacán, Mexico
| | - Gilbert Barrantes
- Centro de Investigación en Biodiversidad y Ecología Tropical, Universidad de Costa Rica, San José, Costa Rica,Laboratorio Binacional de Análisis y Síntesis Ecológica UNAM-UCR, Universidad Nacional Autónoma de México, Universidad de Costa Rica, Morelia, Michoacán, Mexico,Escuela de Biologia, Universidad de Costa Rica, San Jose, Costa Rica
| | - Alfredo Cascante-Marín
- Centro de Investigación en Biodiversidad y Ecología Tropical, Universidad de Costa Rica, San José, Costa Rica,Laboratorio Binacional de Análisis y Síntesis Ecológica UNAM-UCR, Universidad Nacional Autónoma de México, Universidad de Costa Rica, Morelia, Michoacán, Mexico,Escuela de Biologia, Universidad de Costa Rica, San Jose, Costa Rica
| | - Ruth Madrigal-Brenes
- Centro de Investigación en Biodiversidad y Ecología Tropical, Universidad de Costa Rica, San José, Costa Rica,Laboratorio Binacional de Análisis y Síntesis Ecológica UNAM-UCR, Universidad Nacional Autónoma de México, Universidad de Costa Rica, Morelia, Michoacán, Mexico,Escuela de Biologia, Universidad de Costa Rica, San Jose, Costa Rica
| | - Paul Hanson
- Centro de Investigación en Biodiversidad y Ecología Tropical, Universidad de Costa Rica, San José, Costa Rica,Escuela de Biologia, Universidad de Costa Rica, San Jose, Costa Rica
| | - Eric J. Fuchs
- Centro de Investigación en Biodiversidad y Ecología Tropical, Universidad de Costa Rica, San José, Costa Rica,Laboratorio Nacional de Análisis y Síntesis Ecológica/Escuela Nacional de Estudios Superiores Unidad Morelia, Universidad Nacional Autónoma de México, Morelia, Michoacán, Mexico,Laboratorio Binacional de Análisis y Síntesis Ecológica UNAM-UCR, Universidad Nacional Autónoma de México, Universidad de Costa Rica, Morelia, Michoacán, Mexico,Escuela de Biologia, Universidad de Costa Rica, San Jose, Costa Rica
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6
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Miladin JR, Steven JC, Collar DC. A Comparative Approach to Understanding Floral Adaptation to Climate and Pollinators During Diversification in European and Mediterranean Silene. Integr Comp Biol 2022; 62:icac118. [PMID: 35816463 DOI: 10.1093/icb/icac118] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Pollinator selection on floral traits is a well-studied phenomenon, but less is known about the influence of climate on this species interaction. Floral trait evolution could be a result of both adaptation to climate and pollinator-mediated selection. In addition, climate may also determine pollinator communities, leading to an indirect influence of climate on floral traits. In this study, we present evidence of both direct and indirect effects of climate on plant morphology through a phylogenetic comparative analysis of the relationships between climate, pollinators, and morphology in 89 European and Mediterranean Silene species. Climate directly influences vegetative morphology, where both leaf size and internode length were found to be smaller in habitats that are warmer in the driest quarter of the year and that have more precipitation in the coldest quarter of the year. Similarly, flower size was directly influenced by climate, where smaller calyxes were also associated with habitats that are warmer in the driest quarter of the year. These results suggest that reduced leaf and flower size promote water conservation in species that occupy arid climates. Floral traits also evolved in response to pollinators, with elongated calyxes associated with nocturnal pollination, though we also found evidence that climate influences pollinator distribution. Nocturnal pollinators of Silene are found in habitats that have more temperature evenness across seasons than diurnal pollinators. Correspondingly, nocturnally-pollinated Silene are more likely to occur in habitats that have lower daily temperature fluctuation and more temperature evenness across seasons. Altogether these results show that climate can directly influence vegetative and floral morphology, but it can also affect pollinator distribution, which in turn drives floral adaptation. Our study therefore suggests that climate mediates the influence of species interactions on trait evolution by imposing direct selective demands on floral phenotypes and by determining the pollinator community that imposes its own selective demands on flowers.
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Affiliation(s)
- Jenna R Miladin
- Avenue of the Arts, Department of Organismal and Environmental Biology, Christopher Newport University, Newport News, Virginia 23606
| | - Janet C Steven
- Avenue of the Arts, Department of Organismal and Environmental Biology, Christopher Newport University, Newport News, Virginia 23606
| | - David C Collar
- Avenue of the Arts, Department of Organismal and Environmental Biology, Christopher Newport University, Newport News, Virginia 23606
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7
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Cappellari A, Bonaldi G, Mei M, Paniccia D, Cerretti P, Marini L. Functional traits of plants and pollinators explain resource overlap between honeybees and wild pollinators. Oecologia 2022; 198:1019-1029. [PMID: 35380272 PMCID: PMC9056470 DOI: 10.1007/s00442-022-05151-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Accepted: 03/23/2022] [Indexed: 11/30/2022]
Abstract
Managed and wild pollinators often cohabit in both managed and natural ecosystems. The western honeybee, Apis mellifera, is the most widespread managed pollinator species. Due to its density and behaviour, it can potentially influence the foraging activity of wild pollinators, but the strength and direction of this effect are often context-dependent. Here, we observed plant–pollinator interactions in 51 grasslands, and we measured functional traits of both plants and pollinators. Using a multi-model inference approach, we explored the effects of honeybee abundance, temperature, plant functional diversity, and trait similarity between wild pollinators and the honeybee on the resource overlap between wild pollinators and the honeybee. Resource overlap decreased with increasing honeybee abundance only in plant communities with high functional diversity, suggesting a potential diet shift of wild pollinators in areas with a high variability of flower morphologies. Moreover, resource overlap increased with increasing trait similarity between wild pollinators and the honeybee. In particular, central-place foragers of family Apidae with proboscis length similar to the honeybee exhibited the highest resource overlap. Our results underline the importance of promoting functional diversity of plant communities to support wild pollinators in areas with a high density of honeybee hives. Moreover, greater attention should be paid to areas where pollinators possess functional traits similar to the honeybee, as they are expected to be more prone to potential competition with this species.
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Affiliation(s)
- Andree Cappellari
- Department of Agronomy, Food, Natural resources, Animals and Environment (DAFNAE), University of Padua, Legnaro, Padua, Italy.
| | - Giovanna Bonaldi
- Department of Agronomy, Food, Natural resources, Animals and Environment (DAFNAE), University of Padua, Legnaro, Padua, Italy
| | - Maurizio Mei
- Department of Biology and Biotechnology "Charles Darwin", Sapienza University of Rome, Rome, Italy
| | | | - Pierfilippo Cerretti
- Department of Biology and Biotechnology "Charles Darwin", Sapienza University of Rome, Rome, Italy
| | - Lorenzo Marini
- Department of Agronomy, Food, Natural resources, Animals and Environment (DAFNAE), University of Padua, Legnaro, Padua, Italy
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8
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Dzekashu FF, Yusuf AA, Pirk CWW, Steffan‐Dewenter I, Lattorff HMG, Peters MK. Floral turnover and climate drive seasonal bee diversity along a tropical elevation gradient. Ecosphere 2022. [DOI: 10.1002/ecs2.3964] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023] Open
Affiliation(s)
- Fairo F. Dzekashu
- International Centre of Insect Physiology and Ecology (ICIPE) Nairobi Kenya
- Social Insects Research Group, Department of Zoology and Entomology University of Pretoria Pretoria South Africa
| | - Abdullahi A. Yusuf
- Social Insects Research Group, Department of Zoology and Entomology University of Pretoria Pretoria South Africa
| | - Christian W. W. Pirk
- Social Insects Research Group, Department of Zoology and Entomology University of Pretoria Pretoria South Africa
| | - Ingolf Steffan‐Dewenter
- Department of Animal Ecology and Tropical Biology, Biocenter University of Würzburg Würzburg Germany
| | | | - Marcell K. Peters
- Department of Animal Ecology and Tropical Biology, Biocenter University of Würzburg Würzburg Germany
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9
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Klomberg Y, Tropek R, Mertens JEJ, Kobe IN, Hodeček J, Raška J, Fominka NT, Souto-Vilarós D, Janečková P, Janeček Š. Spatiotemporal variation in the role of floral traits in shaping tropical plant-pollinator interactions. Ecol Lett 2022; 25:839-850. [PMID: 35006639 DOI: 10.1111/ele.13958] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2021] [Revised: 06/09/2021] [Accepted: 12/11/2021] [Indexed: 12/30/2022]
Abstract
The pollination syndrome hypothesis predicts that plants pollinated by the same pollinator group bear convergent combinations of specific floral functional traits. Nevertheless, some studies have shown that these combinations predict pollinators with relatively low accuracy. This discrepancy may be caused by changes in the importance of specific floral traits for different pollinator groups and under different environmental conditions. To explore this, we studied pollination systems and floral traits along an elevational gradient on Mount Cameroon during wet and dry seasons. Using Random Forest (Machine Learning) models, allowing the ranking of traits by their relative importance, we demonstrated that some floral traits are more important than others for pollinators. However, the distribution and importance of traits vary under different environmental conditions. Our results imply the need to improve our trait-based understanding of plant-pollinator interactions to better inform the debate surrounding the pollination syndrome hypothesis.
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Affiliation(s)
- Yannick Klomberg
- Department of Ecology, Faculty of Science, Charles University, Prague, Czechia.,Naturalis Biodiversity Center, Leiden, The Netherlands
| | - Robert Tropek
- Department of Ecology, Faculty of Science, Charles University, Prague, Czechia.,Institute of Entomology, Biology Centre, Czech Academy of Sciences, České Budějovice, Czechia
| | - Jan E J Mertens
- Department of Ecology, Faculty of Science, Charles University, Prague, Czechia
| | - Ishmeal N Kobe
- Department of Ecology, Faculty of Science, Charles University, Prague, Czechia
| | - Jiří Hodeček
- Department of Ecology, Faculty of Science, Charles University, Prague, Czechia.,Swiss Human Institute of Forensic Taphonomy, University Centre of Legal Medicine Lausanne-Geneva, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland
| | - Jan Raška
- Department of Ecology, Faculty of Science, Charles University, Prague, Czechia
| | - Nestoral T Fominka
- Department of Zoology and Animal Physiology, Faculty of Science, University of Buea, Buea, Cameroon
| | | | - Petra Janečková
- Department of Ecology, Faculty of Science, Charles University, Prague, Czechia
| | - Štěpán Janeček
- Department of Ecology, Faculty of Science, Charles University, Prague, Czechia
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10
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Borgiani R, Grombone-Guaratini MT, Vargas BDC, Martins AE, Camargo MGG, Morellato LPC. Floristic composition, pollination and seed-dispersal systems in a target cerrado conservation area. BIOTA NEOTROPICA 2022. [DOI: 10.1590/1676-0611-bn-2021-1318] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Abstract: Cerrado remnants can hold an important diversity of plant species of environmental and ecological relevance. We presented a checklist of vascular plants based on 12 years of inventory carried out in 36 plots (10 m x 2 m; 0.18 ha in total) and during unsystematic walks in a remnant area of cerrado sensu stricto located at Itirapina municipality, state of São Paulo, southeastern Brazil. The list comprised 195 plant species, corresponding to 54 families and 131 genera. The richest families were Fabaceae (25 species), Asteraceae (16), Myrtaceae (16), Rubiaceae (11), Bignoniaceae and Malpighiaceae (10 each), Melastomataceae (9), and Erythroxylaceae, Sapindaceae and Annonaceae (6). Predominant life forms included shrubs and trees, with 68% of the species, followed by lianas with 12%, sub-shrub and herbs with 10% each. Bees were the dominant pollinators (67,5%) and the majority of species had seeds dispersed by animals (56.8%), mostly by birds, followed by wind (33.3%) and self-dispersed (11.2%). More than 60% of the total species were classified as “typical” Cerrado species. Bowdichia virgilioides was the only species classified as Near Threatened (NT) and 157 were regarded as Data Deficient (DD). Our dataset provides floristic, structural, and ecological information for one of the targeted areas for Cerrado survey at São Paulo state, contributing to the understanding of diversity patterns and future conservation and restoration actions in this threatened hotspot.
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11
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Chowdhury S, Shahriar SA, Böhm M, Jain A, Aich U, Zalucki MP, Hesselberg T, Morelli F, Benedetti Y, Persson AS, Roy DK, Rahman S, Ahmed S, Fuller RA. Urban green spaces in Dhaka, Bangladesh, harbour nearly half the country’s butterfly diversity. JOURNAL OF URBAN ECOLOGY 2021. [DOI: 10.1093/jue/juab008] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Cities currently harbour more than half of the world’s human population and continued urban expansion replaces natural landscapes and increases habitat fragmentation. The impacts of urbanisation on biodiversity have been extensively studied in some parts of the world, but there is limited information from South Asia, despite the rapid expansion of cities in the region. Here, we present the results of monthly surveys of butterflies in three urban parks in Dhaka city, Bangladesh, over a 3-year period (January 2014 to December 2016). We recorded 45% (137 of the 305 species) of the country’s butterfly richness, and 40% of the species detected are listed as nationally threatened. However, butterfly species richness declined rapidly in the three study areas over the 3-year period, and the decline appeared to be more severe among threatened species. We developed linear mixed effect models to assess the relationship between climatic variables and butterfly species richness. Overall, species richness was positively associated with maximum temperature and negatively with mean relative humidity and saturation deficit. Our results demonstrate the importance of urban green spaces for nationally threatened butterflies. With rapidly declining urban green spaces in Dhaka and other South Asian cities, we are likely to lose refuges for threatened fauna. There is an urgent need to understand urban biodiversity dynamics in the region, and for proactive management of urban green spaces to protect butterflies in South Asia.
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Affiliation(s)
- Shawan Chowdhury
- School of Biological Sciences, University of Queensland, QLD 4072, Australia
| | - Shihab A Shahriar
- Department of Environmental Science and Disaster Management, Noakhali Science and Technology University, Noakhali, Bangladesh
| | - Monika Böhm
- Institute of Zoology, Zoological Society of London, Regent’s Park, London NW1 4RY, UK
| | - Anuj Jain
- BirdLife International (Asia), 354 Tanglin Road, #01-16/17, Tanglin International Centre, Singapore, 247672, Singapore
- Nature Society (Singapore), 510 Geylang Road, Singapore 389466, Singapore
| | - Upama Aich
- Division of Ecology and Evolution, Research School of Biology, The Australian National University, Canberra, Australian Capital Territory 2600, Australia
| | - Myron P Zalucki
- School of Biological Sciences, University of Queensland, QLD 4072, Australia
| | | | - Federico Morelli
- Faculty of Environmental Sciences, Community Ecology & Conservation, Czech University of Life Sciences Prague, Kamýcká 129, CZ-165 00 Prague 6, Czech Republic
| | - Yanina Benedetti
- Faculty of Environmental Sciences, Community Ecology & Conservation, Czech University of Life Sciences Prague, Kamýcká 129, CZ-165 00 Prague 6, Czech Republic
| | - Anna S Persson
- Center for Environment and Climate Research (CEC), Lund University, Lund, Sweden
| | - Deponkor K Roy
- Department of Zoology, University of Dhaka, Dhaka 1000, Bangladesh
| | - Saima Rahman
- Department of Zoology, University of Dhaka, Dhaka 1000, Bangladesh
| | - Sultan Ahmed
- Department of Zoology, University of Dhaka, Dhaka 1000, Bangladesh
| | - Richard A Fuller
- School of Biological Sciences, University of Queensland, QLD 4072, Australia
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12
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Machado ACP, Barônio GJ, de Oliveira FF, Garcia CT, Rech AR. Does a coffee plantation host potential pollinators when it is not flowering? Bee distribution in an agricultural landscape with high biological diversity in the Brazilian Campo Rupestre. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2021; 101:2345-2354. [PMID: 33006760 DOI: 10.1002/jsfa.10857] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/28/2020] [Revised: 07/15/2020] [Accepted: 10/02/2020] [Indexed: 06/11/2023]
Abstract
BACKGROUND Natural environments within agricultural landscapes have been recognized as reservoirs of biodiversity and, therefore, providers of fundamental ecosystem services to human beings. Bees are the main providers of pollination and thus contribute to the production of food consumed worldwide. In this work, we evaluated the distribution of bees in an agricultural landscape of coffee plantation before and after coffee flowering. We aimed at understanding how richness, abundance and composition of bee communities vary among the different vegetation types within and around the coffee crops. RESULTS A total of 638 bees were collected - 312 in the dry season and 326 in the rainy season - totaling 85 species. The sampling methods collected different species, which provided complementary sampling. Only Euglossa leucotricha and Eulaema nigrita were recurrent in both seasons and vegetation types. There was no temporal difference in richness or abundance; however, both varied in relation to the vegetation type and were higher in the coffee-native transition area. Diverging from richness or abundance, the composition of the communities differed regarding season and vegetation types. CONCLUSION We reinforce the importance of maintaining native vegetation in areas surrounding coffee plantations since the crop poorly hosts pollinators when it is not flowering. Natural and semi-natural areas may act as reservoirs of floral visitors, thus maintaining potential cross-pollination services available to coffee production. © 2020 Society of Chemical Industry.
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Affiliation(s)
- Ana Carolina Pereira Machado
- Programa de Pós-Graduação em Biologia Animal, Universidade Federal dos Vales do Jequitinhonha e Mucuri, Diamantina, Brazil
| | - Gudryan Jackson Barônio
- Programa de Pós-Graduação em Ciência Florestal, Universidade Federal dos Vales do Jequitinhonha e Mucuri, Diamantina, Brazil
| | - Favízia Freitas de Oliveira
- Laboratório de Bionomia, Biogeografia e Sistemática de Insetos (BIOSIS), Instituto de Biologia da Universidade Federal da Bahia (IBIO-UFBA), Salvador, Brazil
| | - Caroline Tito Garcia
- Laboratório de Bionomia, Biogeografia e Sistemática de Insetos (BIOSIS), Instituto de Biologia da Universidade Federal da Bahia (IBIO-UFBA), Salvador, Brazil
| | - André Rodrigo Rech
- Programa de Pós-Graduação em Biologia Animal, Universidade Federal dos Vales do Jequitinhonha e Mucuri, Diamantina, Brazil
- Programa de Pós-Graduação em Ciência Florestal, Universidade Federal dos Vales do Jequitinhonha e Mucuri, Diamantina, Brazil
- Faculdade Interdisciplinar em Humanidades, Universidade Federal dos Vales do Jequitinhonha e Mucuri, Diamantina, Brazil
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13
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Oita S, Ibáñez A, Lutzoni F, Miadlikowska J, Geml J, Lewis LA, Hom EFY, Carbone I, U'Ren JM, Arnold AE. Climate and seasonality drive the richness and composition of tropical fungal endophytes at a landscape scale. Commun Biol 2021; 4:313. [PMID: 33750915 PMCID: PMC7943826 DOI: 10.1038/s42003-021-01826-7] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2020] [Accepted: 02/09/2021] [Indexed: 01/31/2023] Open
Abstract
Understanding how species-rich communities persist is a foundational question in ecology. In tropical forests, tree diversity is structured by edaphic factors, climate, and biotic interactions, with seasonality playing an essential role at landscape scales: wetter and less seasonal forests typically harbor higher tree diversity than more seasonal forests. We posited that the abiotic factors shaping tree diversity extend to hyperdiverse symbionts in leaves-fungal endophytes-that influence plant health, function, and resilience to stress. Through surveys in forests across Panama that considered climate, seasonality, and covarying biotic factors, we demonstrate that endophyte richness varies negatively with temperature seasonality. Endophyte community structure and taxonomic composition reflect both temperature seasonality and climate (mean annual temperature and precipitation). Overall our findings highlight the vital role of climate-related factors in shaping the hyperdiversity of these important and little-known symbionts of the trees that, in turn, form the foundations of tropical forest biodiversity.
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Affiliation(s)
- Shuzo Oita
- School of Plant Sciences, University of Arizona, Tucson, AZ, USA
| | | | | | | | - József Geml
- MTA-EKE Lendület Environmental Microbiome Research Group, Eszterházy Károly University, Eger, Hungary
| | - Louise A Lewis
- Department of Ecology and Evolutionary Biology, University of Connecticut, Storrs, CT, USA
| | - Erik F Y Hom
- Department of Biology, Center for Biodiversity and Conservation Research, University of Mississippi, University, MS, USA
| | - Ignazio Carbone
- Center for Integrated Fungal Research, Department of Entomology and Plant Pathology, North Carolina State University, Raleigh, NC, USA
| | - Jana M U'Ren
- Department of Biosystems Engineering and BIO5 Institute, University of Arizona, Tucson, AZ, USA
| | - A Elizabeth Arnold
- School of Plant Sciences, University of Arizona, Tucson, AZ, USA.
- Department of Ecology and Evolutionary Biology, University of Arizona, Tucson, AZ, USA.
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14
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Martins AE, Camargo MGG, Morellato LPC. Flowering Phenology and the Influence of Seasonality in Flower Conspicuousness for Bees. FRONTIERS IN PLANT SCIENCE 2021; 11:594538. [PMID: 33664750 PMCID: PMC7921784 DOI: 10.3389/fpls.2020.594538] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/18/2020] [Accepted: 12/28/2020] [Indexed: 05/28/2023]
Abstract
Flowering patterns are crucial to understand the dynamics of plant reproduction and resource availability for pollinators. Seasonal climate constrains flower and leaf phenology, where leaf and flower colors likely differ between seasons. Color is the main floral trait attracting pollinators; however, seasonal changes in the leaf-background coloration affect the perception of flower color contrasts by pollinators. For a seasonally dry woody cerrado community (Brazilian savanna) mainly pollinated by bees, we verified whether seasonality affects flower color diversity over time and if flower color contrasts of bee-pollinated species differ between seasons due to changes in the leaf-background coloration. For 140 species, we classified flower colors based on human-color vision, and for 99 species, we classified flower colors based on bee-color vision (spectral measurements). We described the community's flowering pattern according to the flower colors using a unique 11 years phenological database. For the 43 bee-pollinated species in which reflectance data were also available, we compared flower color diversity and contrasts against the background between seasons, considering the background coloration of each season. Flowering was markedly seasonal, peaking at the end of the dry season (September), when the highest diversity of flower colors was observed. Yellow flowers were observed all year round, whereas white flowers were seasonal, peaking during the dry season, and pink flowers predominated in the wet season, peaking in March. Bee-bluegreen flowers peaked between September and October. Flowers from the wet and dry seasons were similarly conspicuous against their corresponding background. Regardless of flowering season, the yellowish background of the dry season promoted higher flower color contrast for all flower species, whereas the greener background of the wet season promoted a higher green contrast. Temporal patterns of flower colors and color contrasts were related to the cerrado seasonality, but also to bee's activity, visual system, and behavior. Background coloration affected flower contrasts, favoring flower conspicuousness to bees according to the season. Thus, our results provide new insights regarding the temporal patterns of plant-pollinator interactions.
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Affiliation(s)
- Amanda Eburneo Martins
- Phenology Laboratory, Department of Biodiversity, Biosciences Institute, São Paulo State University (UNESP), Rio Claro, Brazil
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15
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Arroyo MTK, Robles V, Tamburrino Í, Martínez-Harms J, Garreaud RD, Jara-Arancio P, Pliscoff P, Copier A, Arenas J, Keymer J, Castro K. Extreme Drought Affects Visitation and Seed Set in a Plant Species in the Central Chilean Andes Heavily Dependent on Hummingbird Pollination. PLANTS 2020; 9:plants9111553. [PMID: 33198222 PMCID: PMC7697181 DOI: 10.3390/plants9111553] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/09/2020] [Revised: 11/07/2020] [Accepted: 11/09/2020] [Indexed: 01/19/2023]
Abstract
Rising temperatures and increasing drought in Mediterranean-type climate areas are expected to affect plant–pollinator interactions, especially in plant species with specialised pollination. Central Chile experienced a mega drought between 2010 and 2020 which reached an extreme in the austral summer of 2019–2020. Based on intensive pollinator sampling and floral studies we show that the subalpine form of Mutisia subulata (Asteraceae) is a specialised hummingbird-pollinated species. In a two-year study which included the severest drought year, we quantified visitation frequency, flower-head density, flower-head visitation rates, two measures of floral longevity, nectar characteristics and seed set and monitored climatic variables to detect direct and indirect climate-related effects on pollinator visitation. Flower-head density, nectar standing crop and seed set were significantly reduced in the severest drought year while nectar concentration increased. The best model to explain visitation frequency included flower-head density, relative humidity, temperature, and nectar standing crop with highly significant effects of the first three variables. Results for flower-head density suggest hummingbirds were able to associate visual signals with reduced resource availability and/or were less abundant. The negative effect of lower relative humidity suggests the birds were able to perceive differences in nectar concentration. Reduced seed set per flower-head together with the availability of far fewer ovules in the 2019–2020 austral summer would have resulted in a major reduction in seed set. Longer and more intense droughts in this century could threaten local population persistence in M. subulata.
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Affiliation(s)
- Mary T. K. Arroyo
- Facultad de Ciencias, Universidad de Chile, Las Palmeras 3425, 7800003 Ñuñoa, Santiago, Chile; (V.R.); (Í.T.); (A.C.); (J.A.); (J.K.); (K.C.)
- Instituto de Ecología y Biodiversidad (IEB), Las Palmeras 3425, 7800003 Ñuñoa, Santiago, Chile;
- Correspondence: ; Tel.: +56-9-622-4194
| | - Valeria Robles
- Facultad de Ciencias, Universidad de Chile, Las Palmeras 3425, 7800003 Ñuñoa, Santiago, Chile; (V.R.); (Í.T.); (A.C.); (J.A.); (J.K.); (K.C.)
- Instituto de Ecología y Biodiversidad (IEB), Las Palmeras 3425, 7800003 Ñuñoa, Santiago, Chile;
| | - Ítalo Tamburrino
- Facultad de Ciencias, Universidad de Chile, Las Palmeras 3425, 7800003 Ñuñoa, Santiago, Chile; (V.R.); (Í.T.); (A.C.); (J.A.); (J.K.); (K.C.)
- Instituto de Ecología y Biodiversidad (IEB), Las Palmeras 3425, 7800003 Ñuñoa, Santiago, Chile;
| | - Jaime Martínez-Harms
- INIA, La Cruz, Instituto de Investigaciones Agropecuarias, Chorrillos 86, 2280454 La Cruz, Chile;
| | - René D. Garreaud
- Departamento de Geofísica, Universidad de Chile, Avenida Blanco Encalada 2002, 8370449 Santiago, Chile;
- Centro de Ciencia del Clima y la Resiliencia (CR2), Avenida Blanco Encalada 2002, Universidad de Chile, 8370449 Santiago, Chile
| | - Paola Jara-Arancio
- Instituto de Ecología y Biodiversidad (IEB), Las Palmeras 3425, 7800003 Ñuñoa, Santiago, Chile;
- Departamento de Ciencias Biológicas y Departamento de Ecología y Biodiversidad, Facultad de Ciencias de la Vida, Universidad Andrés Bello, Republica 252, 8370134 Santiago, Chile
| | - Patricio Pliscoff
- Departamento de Ecología, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Alameda 340, 8331150 Santiago, Chile;
- Instituto de Geografía, Facultad de Historia, Geografía y Ciencia Política, Pontificia Universidad Católica de Chile, Avenida Vicuña Mackenna 4860, 7820436 Macul, Santiago, Chile
| | - Ana Copier
- Facultad de Ciencias, Universidad de Chile, Las Palmeras 3425, 7800003 Ñuñoa, Santiago, Chile; (V.R.); (Í.T.); (A.C.); (J.A.); (J.K.); (K.C.)
| | - Jonás Arenas
- Facultad de Ciencias, Universidad de Chile, Las Palmeras 3425, 7800003 Ñuñoa, Santiago, Chile; (V.R.); (Í.T.); (A.C.); (J.A.); (J.K.); (K.C.)
| | - Joaquín Keymer
- Facultad de Ciencias, Universidad de Chile, Las Palmeras 3425, 7800003 Ñuñoa, Santiago, Chile; (V.R.); (Í.T.); (A.C.); (J.A.); (J.K.); (K.C.)
| | - Kiara Castro
- Facultad de Ciencias, Universidad de Chile, Las Palmeras 3425, 7800003 Ñuñoa, Santiago, Chile; (V.R.); (Í.T.); (A.C.); (J.A.); (J.K.); (K.C.)
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16
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Pires ACV, Barbosa M, Beiroz W, BeirÃo MV, Marini-Filho OJ, Duarte M, Mielke OHH, Ladeira FA, Nunes YRF, Negreiros D, Fernandes GW. Altitudinal variation in butterfly community associated with climate and vegetation. AN ACAD BRAS CIENC 2020; 92:e20190058. [PMID: 33146275 DOI: 10.1590/0001-3765202020190058] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2019] [Accepted: 12/23/2019] [Indexed: 11/22/2022] Open
Abstract
Elevation creates a variety of physical conditions in a relatively short distance, which makes mountains suitable for studying the effects of climate change on biodiversity. We investigated the importance of climate and vegetation for the distribution of butterflies from 800 to 1400 m elevation. We sampled butterflies, and woody and rosette plants and measured air temperature and humidity, wind speed and gust, and solar radiation. We partitioned diversity to assess the processes underlying community shifts across altitudes - species loss versus replacement. We assessed the strength of the association among butterfly, vegetation, and climate. Butterfly richness and abundance decreased with altitude, and species composition changed along the elevation. Changes in butterfly composition with altitude were mainly through species replacement and by abundance increases in some species being compensated by decreases in others. Since the floristic diversity decreased with altitude due to soil conditions, and butterflies are closely related to their host plants, this could explain species replacement with altitude. Overall, we found a stronger association of butterfly community with vegetation than climate, but plant community and climate were also strongly associated between them. Butterfly richness was more strongly associated with plant richness than with temperature, while the reverse was true for butterfly abundance, which was more strongly associated with temperature than with plant richness. We must consider the complementary roles of resource and conditions in species distribution.
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Affiliation(s)
- Ana Carolina V Pires
- Universidade Federal de Minas Gerais, Ecologia Evolutiva & Biodiversidade, Departamento de Genética, Ecologia & Evolução, Av. Pres. Antônio Carlos, 6627, Pampulha, 31270-901 Belo Horizonte, MG, Brazil.,Instituto Chico Mendes de Conservação da Biodiversidade, Complexo Administrativo EQSW 103/104, s/n, Cruzeiro / Sudoeste / Octogonal, 70670-350 Brasília, DF, Brazil
| | - Milton Barbosa
- Universidade Federal de Minas Gerais, Ecologia Evolutiva & Biodiversidade, Departamento de Genética, Ecologia & Evolução, Av. Pres. Antônio Carlos, 6627, Pampulha, 31270-901 Belo Horizonte, MG, Brazil
| | - Wallace Beiroz
- Universidade Federal de Minas Gerais, Ecologia Evolutiva & Biodiversidade, Departamento de Genética, Ecologia & Evolução, Av. Pres. Antônio Carlos, 6627, Pampulha, 31270-901 Belo Horizonte, MG, Brazil.,Universidade Federal do Sul e Sudeste do Pará, Instituto de Estudos do Xingu, Av. Norte Sul, s/n, Lote 001, Quadra 015, Setor 015 - Rodoviário, 68380-000 São Félix do Xingu, PA, Brazil
| | - Marina V BeirÃo
- Programa de Pós-Graduação em Ecologia de Biomas Tropicais, Universidade Federal de Ouro Preto, Rua Professor Paulo Magalhães Gomes, 122, Bauxita, 35400-000 Ouro Preto, MG, Brazil
| | - Onildo J Marini-Filho
- Instituto Chico Mendes de Conservação da Biodiversidade, Complexo Administrativo EQSW 103/104, s/n, Cruzeiro / Sudoeste / Octogonal, 70670-350 Brasília, DF, Brazil
| | - Marcelo Duarte
- Museu de Zoologia, Universidade de São Paulo, Av. Nazaré, 481, Ipiranga, 04263-000 São Paulo, SP, Brazil.,Research Associate of the National Museum of Natural History, Smithsonian Institution, 10th St. & Constitution Ave. NW, Washington, DC 20560, USA
| | - Olaf H H Mielke
- Universidade Federal do Paraná, Departamento de Zoologia, Laboratório de Estudos de Lepidoptera Neotropical, Rua XV de Novembro, 1299, Centro, 80060-000 Curitiba, PR, Brazil.,McGuire Center for Lepidoptera and Biodiversity, Florida Museum of Natural History, 3215 Hull Rd, Gainesville, FL 32611, USA
| | - Fabiola A Ladeira
- Universidade Federal de Minas Gerais, Ecologia Evolutiva & Biodiversidade, Departamento de Genética, Ecologia & Evolução, Av. Pres. Antônio Carlos, 6627, Pampulha, 31270-901 Belo Horizonte, MG, Brazil
| | - Yule R F Nunes
- Universidade Estadual de Montes Claros, Departamento de Biologia Geral, Laboratório de Ecologia Vegetal, Av. Prof. Rui Braga, s/n, Vila Mauriceia, 39408-354 Montes Claros, MG, Brazil
| | - Daniel Negreiros
- Instituto de Ciências Biológicas e Saúde, Centro Universitário UNA, Rua dos Guajajaras, 175, Centro, 30180-100 Belo Horizonte, MG, Brazil
| | - Geraldo W Fernandes
- Universidade Federal de Minas Gerais, Ecologia Evolutiva & Biodiversidade, Departamento de Genética, Ecologia & Evolução, Av. Pres. Antônio Carlos, 6627, Pampulha, 31270-901 Belo Horizonte, MG, Brazil
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Escobedo-Kenefic N, Landaverde-González P, Theodorou P, Cardona E, Dardón MJ, Martínez O, Domínguez CA. Disentangling the effects of local resources, landscape heterogeneity and climatic seasonality on bee diversity and plant-pollinator networks in tropical highlands. Oecologia 2020; 194:333-344. [PMID: 32712873 DOI: 10.1007/s00442-020-04715-8] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2019] [Accepted: 07/16/2020] [Indexed: 11/29/2022]
Abstract
Land-use alteration and climate seasonality have profound effects on bee species diversity by influencing the availability of nesting and floral resources. Here, using twelve sites embedded in an agriculture-forest mosaic in the tropical highlands of Guatemala, we investigated the relative effects of climate seasonality and landscape heterogeneity on bee and floral-resource community structure and on their mutualistic network architecture. We found that climate seasonality affected bee diversity, which was higher in the wet season and associated positively with the availability of floral resources across both seasons. Bee community composition also differed between seasons and it was mainly driven by floral-resource richness and the proportion of agricultural, semi-natural and forest cover. In addition to the effects on bee diversity, climate seasonality also affected flower-bee visitation networks. We documented higher relative (null model corrected) nestedness in the dry season compared to the wet season. Niche partitioning as a result of competition for scarce resources in the dry season could be the process driving the differences in the network structure between seasons. Furthermore, relative nestedness was consistently smaller than zero, and relative modularity and specialization were consistently larger than zero in both seasons, suggesting the existence of isolated groups of interacting partners in all our flower-bee visitation networks. Our results highlight the effect of climatic seasonality and the importance of preserving local floral resources and natural heterogeneous habitats for the conservation of bee communities and their pollination services in tropical highlands.
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Affiliation(s)
- Natalia Escobedo-Kenefic
- Unidad para el Conocimiento, Uso y Valoración de la Biodiversidad, Centro de Estudios Conservacionistas-CECON-, Facultad de Ciencias Químicas y Farmacia, Universidad de San Carlos de Guatemala, Avenida La Reforma 0-63 zona 10, 01010, Ciudad de Guatemala, Guatemala.,Departamento de Ecología Evolutiva, Instituto de Ecología, Universidad Nacional Autónoma de México, 70-275, 04510, Ciudad de México, México
| | - Patricia Landaverde-González
- Unidad para el Conocimiento, Uso y Valoración de la Biodiversidad, Centro de Estudios Conservacionistas-CECON-, Facultad de Ciencias Químicas y Farmacia, Universidad de San Carlos de Guatemala, Avenida La Reforma 0-63 zona 10, 01010, Ciudad de Guatemala, Guatemala. .,General Zoology, Institute for Biology, Martin-Luther University Halle-Wittenberg, Hoher Weg 8, 06120, Halle, Saale, Germany.
| | - Panagiotis Theodorou
- General Zoology, Institute for Biology, Martin-Luther University Halle-Wittenberg, Hoher Weg 8, 06120, Halle, Saale, Germany.
| | - Edson Cardona
- Unidad para el Conocimiento, Uso y Valoración de la Biodiversidad, Centro de Estudios Conservacionistas-CECON-, Facultad de Ciencias Químicas y Farmacia, Universidad de San Carlos de Guatemala, Avenida La Reforma 0-63 zona 10, 01010, Ciudad de Guatemala, Guatemala
| | - María José Dardón
- Faculty of Life Sciences, Humboldt-University of Berlin, Albrecht Daniel Thaer-Institute of Agricultural and Horticultural Sciences, Albrecht-Thaer-Weg 5, Berlin, D-14195, Germany
| | - Oscar Martínez
- Unidad para el Conocimiento, Uso y Valoración de la Biodiversidad, Centro de Estudios Conservacionistas-CECON-, Facultad de Ciencias Químicas y Farmacia, Universidad de San Carlos de Guatemala, Avenida La Reforma 0-63 zona 10, 01010, Ciudad de Guatemala, Guatemala.,Departamento de Agricultura, Sociedad y Ambiente, El Colegio de La Frontera Sur, Carretera Panamericana y Periférico Sur s/n, Barrio María Auxiliadora, San Cristóbal de Las Casas, 29290, Chiapas, México
| | - César A Domínguez
- Departamento de Ecología Evolutiva, Instituto de Ecología, Universidad Nacional Autónoma de México, 70-275, 04510, Ciudad de México, México.
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18
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Stewart AB, Waitayachart P. Year-round temporal stability of a tropical, urban plant-pollinator network. PLoS One 2020; 15:e0230490. [PMID: 32275717 PMCID: PMC7147774 DOI: 10.1371/journal.pone.0230490] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2019] [Accepted: 03/02/2020] [Indexed: 12/04/2022] Open
Abstract
Plant-pollinator interactions are known to vary across time, both in terms of species composition and the associations between partner species. However, less is known about tropical pollination networks, and tropical urban parks provide a unique opportunity to study network stability in an environment where temperature and floral resources are relatively constant due to both the tropical climate as well as park horticulture. The objectives of this study were thus to examine the interactions between flowering plants and their potential pollinators in a large, tropical city (Bangkok, Thailand) across 12 consecutive months, and to assess the stability of network properties over time. We conducted monthly pollinator observations at 9 parks spaced throughout the city, and collected data on temperature, precipitation, floral abundance and floral species richness. We found that neither pollinator abundance nor richness varied significantly across months when all parks were pooled. However, pollinator abundance was significantly influenced by floral abundance, floral richness, and their interaction, and pollinator richness was significantly influenced by floral richness and precipitation. Finally, we found that network properties did not change across months, even as species composition did. We conclude that the year-round constancy of floral resources and climate conditions appear to create a network in dynamic equilibrium, where plant and pollinator species compositions change, but network properties remain stable. The results of this study provide useful information about how tropical pollinators respond to urban environments, which is particularly relevant given that most urban development is predicted to occur in the tropics.
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Affiliation(s)
- Alyssa B. Stewart
- Department of Plant Science, Faculty of Science, Mahidol University, Bangkok, Thailand
- * E-mail:
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19
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Abrahamczyk S. Comparison of the ecology and evolution of plants with a generalist bird pollination system between continents and islands worldwide. Biol Rev Camb Philos Soc 2019; 94:1658-1671. [DOI: 10.1111/brv.12520] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2019] [Revised: 04/15/2019] [Accepted: 04/18/2019] [Indexed: 01/06/2023]
Affiliation(s)
- Stefan Abrahamczyk
- Nees‐Institute for Biodiversity of PlantsUniversity of Bonn 53115 Bonn Germany
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20
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Landis JB, Bell CD, Hernandez M, Zenil-Ferguson R, McCarthy EW, Soltis DE, Soltis PS. Evolution of floral traits and impact of reproductive mode on diversification in the phlox family (Polemoniaceae). Mol Phylogenet Evol 2018; 127:878-890. [DOI: 10.1016/j.ympev.2018.06.035] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2018] [Revised: 06/20/2018] [Accepted: 06/20/2018] [Indexed: 01/19/2023]
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21
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Nagaishi E, Takemoto K. Network resilience of mutualistic ecosystems and environmental changes: an empirical study. ROYAL SOCIETY OPEN SCIENCE 2018; 5:180706. [PMID: 30839716 PMCID: PMC6170563 DOI: 10.1098/rsos.180706] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/03/2018] [Accepted: 08/23/2018] [Indexed: 06/09/2023]
Abstract
It is theorized that a mutualistic ecosystem's resilience against perturbations (e.g. species extinction) is determined by a single macroscopic parameter (network resilience), calculable from the network. Given that such perturbations occur owing to environmental changes (e.g. climate change and human impact), it has been predicted that mutualistic ecosystems that exist despite extensive environmental changes exhibit higher network resilience; however, such a prediction has not been confirmed using real-world data. Thus, in this study, the effects of climate change velocity and human activities on mutualistic network resilience were investigated. A global dataset of plant-animal mutualistic networks was used, and spatial analysis was performed to examine the effects. Moreover, the potential confounding effects of network size, current climate and altitude were statistically controlled. It was demonstrated that mutualistic network resilience was globally influenced by warming velocity and human impact, in addition to current climate. Specifically, pollination network resilience increased in response to human impact, and seed-dispersal network resilience increased with warming velocity. The effect of environmental changes on network resilience for plants was remarkable. The results confirmed the prediction obtained based on the theory and imply that real-world mutualistic networks have a structure that increases ecosystem resilience against environmental changes. These findings will enhance the understanding of ecosystem resilience.
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de L. Nascimento FE, Perger R. Genus Pseudolepturges Gilmour (1957) (Coleoptera: Cerambycidae: Lamiinae): a new species from Bolivia, key to the species of the genus and first reports of a possible Pseudomyrmex ant mimic in longhorn beetles. J NAT HIST 2018. [DOI: 10.1080/00222933.2018.1473518] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
Affiliation(s)
| | - Robert Perger
- Departamento de Entomologia, Colección Boliviana de Fauna, La Paz, Bolivia
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Perillo LN, Neves FDS, Antonini Y, Martins RP. Compositional changes in bee and wasp communities along Neotropical mountain altitudinal gradient. PLoS One 2017; 12:e0182054. [PMID: 28746420 PMCID: PMC5528900 DOI: 10.1371/journal.pone.0182054] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2017] [Accepted: 07/11/2017] [Indexed: 11/18/2022] Open
Abstract
Climate conditions tend to differ along an altitudinal gradient, resulting in some species groups' patterns of lower species richness with increasing altitude. While this pattern is well understood for tropical mountains, studies investigating possible determinants of variation in beta-diversity at its different altitudes are scarce. We sampled bee and wasp communities (Hymenoptera: Aculeata) along an altitudinal gradient (1,000-2,000 m.a.s.l.) in a tropical mountainous region of Brazil. Trap nests and Moericke traps were established at six sampling points, with 200 m difference in altitude between each point. We obtained average climate data (1970-2000) from Worldclim v2 for altitudes at each sampling site. Nest traps captured 17 bee and wasp species from six families, and Moericke traps captured 124 morphospecies from 13 families. We found a negative correlation between altitude and species richness and abundance. Temperature, precipitation, water vapor pressure, and wind speed influenced species richness and abundance, and were correlated with altitude. β-diversity was primarily determined by species turnover as opposed to nestedness, and Aculeate community similarity was higher for more similar altitudinal ranges. Moericke traps seem to be more efficient for altitudinal surveys compared to nest traps. We found high occurrence of singleton and doubleton species at all altitudes, highlighting the need for long-term studies to efficiently assess hymenopteran diversity in these environments.
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Affiliation(s)
- Lucas Neves Perillo
- Departamento de Biologia Geral, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Frederico de Siqueira Neves
- Departamento de Biologia Geral, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Yasmine Antonini
- Departamento de Biodiversidade Evolução e Meio Ambiente, Universidade Federal de Ouro Preto, Ouro Preto, MG, Brazil
| | - Rogério Parentoni Martins
- Programa de Pós-Graduação em Ecologia e Recursos Naturais, Universidade Federal do Ceará, Fortaleza, CE, Brazil
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Patterns of orchid bee species diversity and turnover among forested plateaus of central Amazonia. PLoS One 2017; 12:e0175884. [PMID: 28410432 PMCID: PMC5391963 DOI: 10.1371/journal.pone.0175884] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2017] [Accepted: 03/31/2017] [Indexed: 11/19/2022] Open
Abstract
The knowledge of spatial pattern and geographic beta-diversity is of great importance for biodiversity conservation and interpreting ecological information. Tropical forests, especially the Amazon Rainforest, are well known for their high species richness and low similarity in species composition between sites, both at local and regional scales. We aimed to determine the effect and relative importance of area, isolation and climate on species richness and turnover in orchid bee assemblages among plateaus in central Brazilian Amazonia. Variance partitioning techniques were applied to assess the relative effects of spatial and environmental variables on bee species richness, phylogeny and composition. We hypothesized that greater abundance and richness of orchid bees would be found on larger plateaus, with a set of core species occurring on all of them. We also hypothesized that smaller plateaus would possess lower phylogenetic diversity. We found 55 bee species distributed along the nine sampling sites (plateaus) with 17 of them being singletons. There was a significant decrease in species richness with decreasing size of plateaus, and a significant decrease in the similarity in species composition with greater distance and climatic variation among sampling sites. Phylogenetic diversity varied among the sampling sites but was directly related to species richness. Although not significantly related to plateau area, smaller or larger PDFaith were observed in the smallest and the largest plateaus, respectively.
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Yamaji F, Ohsawa TA. Field Experiments of Pollination Ecology: The Case of Lycoris sanguinea var. sanguinea. J Vis Exp 2016:54728. [PMID: 27911369 PMCID: PMC5226278 DOI: 10.3791/54728] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022] Open
Abstract
Plant-pollinator interactions have been studied for approximately one hundred years. During that time, many field methods have been developed to clarify the pollination effectiveness of each pollinator for visited flowers. Pollinator observations have been one of the most common methods to identify pollinators, and bagging and cage experiments have been conducted to show the effectiveness of specific pollinators. In a previous study of Lycoris sanguinea var. sanguinea, its effective pollinators, the visitation frequencies of each floral visitor, and its reproductive strategies were not identified. This study reports the observation that small bees visited flowers that were partially opened (breaking buds). To the best of our knowledge, this phenomenon has not been reported previously. Further, this study investigates the hypothesis that small bees can pollinate at that flowering stage. This study demonstrates the basic methods of field experiments in pollination ecology using L. sanguinea var. sanguinea. Pollinator observations and digital video showed the visitation frequencies of each floral visitor. Bagging and cage experiments revealed that these flowers could be pollinated fully and that breaking-bud pollination could be important for the pollination of this plant species. The advantages and disadvantages of each method are discussed, and recent developments, including laboratory experiments, are described.
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26
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Beccacece HM, Zeballos SR, Zapata AI. Changes in Species Richness and Composition of Tiger Moths (Lepidoptera: Erebidae: Arctiinae) among Three Neotropical Ecoregions. PLoS One 2016; 11:e0162661. [PMID: 27681478 PMCID: PMC5040457 DOI: 10.1371/journal.pone.0162661] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2016] [Accepted: 08/28/2016] [Indexed: 11/18/2022] Open
Abstract
Paraná, Yungas and Chaco Serrano ecoregions are among the most species-rich terrestrial habitats at higher latitude. However, the information for tiger moths, one of the most speciose groups of moths, is unknown in these ecoregions. In this study, we assess their species richness and composition in all three of these ecoregions. Also we investigated whether the species composition of tiger moths is influenced by climatic factors and altitude. Tiger moth species were obtained with samples from 71 sites using standardized protocols (21 sites were in Yungas, 19 in Paraná and 31 in Chaco Serrano). Rarefaction-extrapolation curves, non-parametric estimators for incidence and sample coverage indices were performed to assess species richness in the ecoregions studied. Non metric multidimensional scaling and adonis tests were performed to compare the species composition of tiger moths among ecoregions. Permutest analysis and Pearson correlation were used to evaluate the relationship among species composition and annual mean temperature, annual temperature range, annual precipitation, precipitation seasonality and altitude. Among ecoregions Paraná was the richest with 125 species, followed by Yungas with 63 species and Chaco Serrano with 24 species. Species composition differed among these ecoregions, although Yungas and Chaco Serrano were more similar than Paraná. Species composition was significantly influenced by climatic factors and altitude. This study showed that species richness and species composition of tiger moths differed among the three ecoregions assessed. Furthermore, not only climatic factors and altitude influence the species composition of tiger moths among ecoregions, but also climatic seasonality at higher latitude in Neotropical South America becomes an important factor.
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Affiliation(s)
- Hernán Mario Beccacece
- Centro de Investigaciones Entomológicas de Córdoba, Instituto de Investigaciones Biológicas y Tecnológicas, Consejo Nacional de Investigaciones Científicas y Técnicas- Universidad Nacional de Córdoba, Córdoba, Argentina
- * E-mail:
| | - Sebastián Rodolfo Zeballos
- Instituto Multidisciplinario de Biología Vegetal, Consejo Nacional de Investigaciones Científicas y Técnicas-Universidad Nacional de Córdoba, Córdoba, Argentina
| | - Adriana Inés Zapata
- Grupo de Investigación y Conservación de Lepidópteros de Argentina, Museo de Zoología, Facultad de Ciencias Exactas, Físicas y Naturales, Universidad Nacional de Córdoba, Córdoba, Argentina
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Barbir J, Azpiazu C, Badenes-Pérez FR, Fernández-Quintanilla C, Dorado J. Functionality of Selected Aromatic Lamiaceae in Attracting Pollinators in Central Spain. JOURNAL OF ECONOMIC ENTOMOLOGY 2016; 109:529-536. [PMID: 26838345 DOI: 10.1093/jee/tow004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Planting floral margins in agricultural landscapes has been shown to increase the abundance of pollinators in agro-ecosystems. However, to create efficient margins, it is necessary to use attractive, not weedy native plants with different blooming periods to prolong the availability of floral resources. Six native perennial plants of the Lamiaceae with different blooming periods were studied in a randomized block design, with the final aim to select the most efficient plants in floral mixtures by studying relationships between their floral phenology, floral density, and attractiveness to pollinators in Central Spain. In addition, their spatial expansion, i.e., potential weediness, was estimated under the field conditions, as the final purpose of the plants is to be implemented within the agro-ecosystems. The results showed that plant species with higher floral density (Nepeta tuberosa L. and Hyssopus officinalis L.) showed significantly higher attractiveness to pollinators and enhanced the attractiveness of floral mixtures. Species that bloomed in early spring (Salvia verbenaca L.) and in summer (Melissa officinalis L. and Thymbra capitata L.) did not efficiently contribute to the attractiveness of the mixtures to pollinators. In addition, besides high floral density of Salvia officinalis L. and N. tuberosa in the spring, warm and dry weather in spring 2012 enhanced the activity of bees, while cold and rainy weather in spring 2013 enhanced the activity of hoverflies. None of the plants showed weedy growth and so posed no danger of invading adjacent crops.
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Ramírez SR, Hernández C, Link A, López-Uribe MM. Seasonal cycles, phylogenetic assembly, and functional diversity of orchid bee communities. Ecol Evol 2015; 5:1896-907. [PMID: 26140205 PMCID: PMC4485970 DOI: 10.1002/ece3.1466] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2014] [Revised: 02/07/2015] [Accepted: 02/19/2015] [Indexed: 11/16/2022] Open
Abstract
Neotropical rainforests sustain some of the most diverse terrestrial communities on Earth. Euglossine (or orchid) bees are a diverse lineage of insect pollinators distributed throughout the American tropics, where they provide pollination services to a staggering diversity of flowering plant taxa. Elucidating the seasonal patterns of phylogenetic assembly and functional trait diversity of bee communities can shed new light into the mechanisms that govern the assembly of bee pollinator communities and the potential effects of declining bee populations. Male euglossine bees collect, store, and accumulate odoriferous compounds (perfumes) to subsequently use during courtship display. Thus, synthetic chemical baits can be used to attract and monitor euglossine bee populations. We conducted monthly censuses of orchid bees in three sites in the Magdalena valley of Colombia – a region where Central and South American biotas converge – to investigate the structure, diversity, and assembly of euglossine bee communities through time in relation to seasonal climatic cycles. In particular, we tested the hypothesis that phylogenetic community structure and functional trait diversity changed in response to seasonal rainfall fluctuations. All communities exhibited strong to moderate phylogenetic clustering throughout the year, with few pronounced bursts of phylogenetic overdispersion that coincided with the transition from wet-to-dry seasons. Despite the heterogeneous distribution of functional traits (e.g., body size, body mass, and proboscis length) and the observed seasonal fluctuations in phylogenetic diversity, we found that functional trait diversity, evenness, and divergence remained constant during all seasons in all communities. However, similar to the pattern observed with phylogenetic diversity, functional trait richness fluctuated markedly with rainfall in all sites. These results emphasize the importance of considering seasonal fluctuations in community assembly and provide a glimpse to the potential effects that climatic alterations may have on both pollinator communities and the ecosystem services they provide.
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Affiliation(s)
- Santiago R Ramírez
- University of California Davis One Shields Ave, Davis, California, 95616
| | - Carlos Hernández
- Departamento de Ecología, Facultad de Estudios Ambientales y Rurales, Pontificia Universidad Javeriana Bogotá, Colombia
| | - Andres Link
- Departamento de Ciencias Biológicas, Universidad de Los Andes Bogotá, Colombia
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