1
|
Escobedo-Kenefic N, Casiá-Ajché QB, Cardona E, Escobar-González D, Mejía-Coroy A, Enríquez E, Landaverde-González P. Landscape or local? Distinct responses of flower visitor diversity and interaction networks to different land use scales in agricultural tropical highlands. FRONTIERS IN SUSTAINABLE FOOD SYSTEMS 2022. [DOI: 10.3389/fsufs.2022.974215] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Land use change has been identified as a cause for biodiversity loss and has significant effects on pollinators and their interactions with plants. Interaction network analyses complement diversity estimators by providing information on the stability and functionality of the plant-pollinator community in an ecosystem. However, how land use changes affect insect diversity, and the structure of their plant-insect interaction networks, could depend on the intensity of the disturbance but also may be a matter of scale. Our study was carried out in a tropical highland landscape dominated by intense, yet diverse, small-scale agriculture. We studied the effects of land use, at a landscape scale, and local cover and plant ecological descriptors, at a local scale; on diversity descriptors of insect pollinator communities, the abundance of the most frequent flower visitors, and their interaction networks. Seminatural vegetation favored insect flower visitors at both scales. At the landscape scale, human settlements positively influenced bee diversity, and seminatural areas favored the abundance of frequent hoverfly and bumblebee species. At the local scale, bare soil cover negatively influenced honeybee abundance while flower-rich covers positively related to bumblebee abundance. Only local scale variables had influence on network metrics. Bare soil cover was related to higher network specialization, probably due to a low rate of honeybee interactions. Flower-rich covers negatively influenced network connectance but favored modularity. These results suggest that flower resources, provided by weed areas and flowering crops, promote a high rate of interactions between trophic levels and a non-random structure in the interaction networks that may be helping to sustain network stability. Our results highlight the role of seminatural vegetation, at both scales, in maintaining stable insect pollinator communities and interactions in heterogeneous agricultural landscapes of the tropics.
Collapse
|
2
|
Gómez‐Martínez C, González‐Estévez MA, Cursach J, Lázaro A. Pollinator richness, pollination networks, and diet adjustment along local and landscape gradients of resource diversity. ECOLOGICAL APPLICATIONS : A PUBLICATION OF THE ECOLOGICAL SOCIETY OF AMERICA 2022; 32:e2634. [PMID: 35403772 PMCID: PMC9539497 DOI: 10.1002/eap.2634] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Revised: 02/06/2022] [Accepted: 02/18/2022] [Indexed: 06/14/2023]
Abstract
Loss of habitats and native species, introduction of invasive species, and changing climate regimes lead to the homogenization of landscapes and communities, affecting the availability of habitats and resources for economically important guilds, such as pollinators. Understanding how pollinators and their interactions vary along resource diversity gradients at different scales may help to determine their adaptability to the current diversity loss related to global change. We used data on 20 plant-pollinator communities along gradients of flower richness (local diversity) and landscape heterogeneity (landscape diversity) to understand how the diversity of resources at local and landscape scales affected (1) wild pollinator abundance and richness (accounting also for honey bee abundance), (2) the structure of plant-pollinator networks, (3) the proportion of actively selected interactions (those not occurring by neutral processes), and (4) pollinator diet breadth and species' specialization in networks. Wild pollinator abundance was higher overall in flower-rich and heterogeneous habitats, while wild pollinator richness increased with flower richness (more strongly for beetles and wild bees) and decreased with honeybee abundance. Network specialization (H2 '), modularity, and functional complementarity were all positively related to floral richness and landscape heterogeneity, indicating niche segregation as the diversity of resources increases at both scales. Flower richness also increased the proportion of actively selected interactions (especially for wild bees and flies), whereas landscape heterogeneity had a weak negative effect on this variable. Overall, network-level metrics responded to larger landscape scales than pollinator-level metrics did. Higher floral richness resulted in a wider taxonomic and functional diet for all the study guilds, while functional diet increased mainly for beetles. Despite this, specialization in networks (d') increased with flower richness for all the study guilds, because pollinator species fed on a narrower subset of plants as communities became richer in species. Our study indicates that pollinators are able to adapt their diet to resource changes at local and landscape scales. However, resource homogenization might lead to poor and generalist pollinator communities, where functionally specialized interactions are lost. This study highlights the importance of including different scales to understand the effects of global change on pollination service through changes in resource diversity.
Collapse
Affiliation(s)
- Carmelo Gómez‐Martínez
- Global Change Research GroupMediterranean Institute for Advanced Studies (UIB‐CSIC)EsporlesSpain
| | | | - Joana Cursach
- Department of Biology, Laboratory of Botany, Research Group on Plant Biology under Mediterranean ConditionsUniversity of the Balearic IslandsPalmaSpain
| | - Amparo Lázaro
- Global Change Research GroupMediterranean Institute for Advanced Studies (UIB‐CSIC)EsporlesSpain
- Department of Biology, Ecology AreaUniversity of the Balearic IslandsPalmaSpain
| |
Collapse
|
3
|
Lanner J, Dubos N, Geslin B, Leroy B, Hernández-Castellano C, Dubaić JB, Bortolotti L, Calafat JD, Ćetković A, Flaminio S, Le Féon V, Margalef-Marrase J, Orr M, Pachinger B, Ruzzier E, Smagghe G, Tuerlings T, Vereecken NJ, Meimberg H. On the road: Anthropogenic factors drive the invasion risk of a wild solitary bee species. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 827:154246. [PMID: 35245544 DOI: 10.1016/j.scitotenv.2022.154246] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/22/2021] [Revised: 02/20/2022] [Accepted: 02/26/2022] [Indexed: 06/14/2023]
Abstract
Complex biotic networks of invaders and their new environments pose immense challenges for researchers aiming to predict current and future occupancy of introduced species. This might be especially true for invasive bees, as they enter novel trophic interactions. Little attention has been paid to solitary, invasive wild bees, despite their increasing recognition as a potential global threat to biodiversity. Here, we present the first comprehensive species distribution modelling approach targeting the invasive bee Megachile sculpturalis, which is currently undergoing parallel range expansion in North America and Europe. While the species has largely colonised the most highly suitable areas of North America over the past decades, its invasion of Europe seems to be in its early stages. We showed that its current distribution is largely explained by anthropogenic factors, suggesting that its spread is facilitated by road and maritime traffic, largely beyond its intrinsic dispersal ability. Our results suggest that M. sculpturalis is likely to be negatively affected by future climate change in North America, while in Europe the potential suitable areas at-risk of invasion remain equally large. Based on our study, we emphasise the role of expert knowledge for evaluation of ecologically meaningful variables implemented and interpreted for species distribution modelling. We strongly recommend that the monitoring of this and other invasive pollinator species should be prioritised in areas identified as at-risk, alongside development of effective management strategies.
Collapse
Affiliation(s)
- Julia Lanner
- University of Natural Resources and Life Sciences, Department of Integrative Biology and Biodiversity Research; Institute of Integrative Conservation Research, Gregor Mendel Str., 33, 1080 Vienna, Austria.
| | - Nicolas Dubos
- Territoire Environnement Teledetection Information Spatiale (TETIS), University of Montpellier, INRAE, Montpellier, France
| | - Benoît Geslin
- IMBE, Aix Marseille Université, Avignon Université, CNRS, IRD, Marseille, France
| | - Boris Leroy
- Muséum National d'Histoire Naturelle, Lab. Biologie des Organismes et des Ecosystèmes Aquatiques, Dept. Adaptation du Vivant, France
| | | | - Jovana Bila Dubaić
- Faculty of Biology, University of Belgrade, Studentski trg 16, 11000 Belgrade, Serbia
| | - Laura Bortolotti
- CREA - Research Centre for Agriculture and Environment, Via di Saliceto 80, Bologna, Italy
| | - Joan Diaz Calafat
- Southern Swedish Forest Research Centre, Swedish University of Agricultural Sciences, 230 53 Alnarp, Sweden
| | - Aleksandar Ćetković
- Faculty of Biology, University of Belgrade, Studentski trg 16, 11000 Belgrade, Serbia
| | - Simone Flaminio
- CREA - Research Centre for Agriculture and Environment, Via di Saliceto 80, Bologna, Italy
| | - Violette Le Féon
- Observatoire des Abeilles, 68 rue du Onze Novembre, 59148 Flines-lez-Raches, France
| | - Jordi Margalef-Marrase
- Centre de Recerca Ecològica i Aplicacions Forestals (CREAF), Cerdanyola del Vallès 08193, Spain
| | - Michael Orr
- Key Laboratory of Zoological Systematics and Evolution, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
| | - Bärbel Pachinger
- University of Natural Resources and Life Sciences, Department of Integrative Biology and Biodiversity Research; Institute of Integrative Conservation Research, Gregor Mendel Str., 33, 1080 Vienna, Austria
| | - Enrico Ruzzier
- World Biodiversity Association Onlus c/o Museo Civico di Storia Naturale, Lungadige Porta Vittoria 9, Verona, Italy; Department of Agronomy, Food, Natural Resources, Animals and Environment, University of Padova, viale dell' Università 16, 35020 Legnaro, Italy
| | - Guy Smagghe
- Laboratory of Agrozoology, Department of Plant and Crops, Faculty of Bioscience Engineering, Ghent University, Coupure Links 653, Ghent, Belgium
| | - Tina Tuerlings
- Laboratory of Agrozoology, Department of Plant and Crops, Faculty of Bioscience Engineering, Ghent University, Coupure Links 653, Ghent, Belgium
| | - Nicolas J Vereecken
- Agroecology Lab, Université libre de Bruxelles (ULB), Boulevard du Triomphe CP 264/02, B-1050 Brussels, Belgium
| | - Harald Meimberg
- University of Natural Resources and Life Sciences, Department of Integrative Biology and Biodiversity Research; Institute of Integrative Conservation Research, Gregor Mendel Str., 33, 1080 Vienna, Austria
| |
Collapse
|
4
|
Gillespie MAK, Baude M, Biesmeijer J, Boatman N, Budge GE, Crowe A, Davies N, Evans R, Memmott J, Morton RD, Moss E, Murphy M, Pietravalle S, Potts SG, Roberts SPM, Rowland C, Senapathi D, Smart SM, Wood C, Kunin WE. Landscape-scale drivers of pollinator communities may depend on land-use configuration. Philos Trans R Soc Lond B Biol Sci 2022; 377:20210172. [PMID: 35491602 DOI: 10.1098/rstb.2021.0172] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Research into pollinators in managed landscapes has recently combined approaches of pollination ecology and landscape ecology, because key stressors are likely to interact across wide areas. While laboratory and field experiments are valuable for furthering understanding, studies are required to investigate the interacting drivers of pollinator health and diversity across a broader range of landscapes and a wider array of taxa. Here, we use a network of 96 study landscapes in six topographically diverse regions of Britain, to test the combined importance of honeybee density, insecticide loadings, floral resource availability and habitat diversity to pollinator communities. We also explore the interactions between these drivers and the cover and proximity of semi-natural habitat. We found that among our four drivers, only honeybee density was positively related to wild pollinator abundance and diversity, and the positive association between abundance and floral resources depended on insecticide loadings and habitat diversity. By contrast, our exploratory models including habitat composition metrics revealed a complex suite of interactive effects. These results demonstrate that improving pollinator community composition and health is unlikely to be achieved with general resource enhancements only. Rather, local land-use context should be considered in fine-tuning pollinator management and conservation. This article is part of the theme issue 'Natural processes influencing pollinator health: from chemistry to landscapes'.
Collapse
Affiliation(s)
- Mark A K Gillespie
- School of Biology, University of Leeds, Leeds LS2 9JT, UK.,Department of Science and Engineering, Western Norway University of Applied Sciences, PB 133, 6851 Sogndal, Norway
| | - Mathilde Baude
- School of Biological Sciences, University of Bristol, Woodland Road, Bristol BS8 1UG, UK.,INRAE USC1328, LBLGC EA1207, University of Orléans, rue de Chartres, BP 6759, 45067 Orléans Cedex 2, France
| | - Jacobus Biesmeijer
- Naturalis Biodiversity Center, 2333 CR Leiden, The Netherlands.,Institute for Biodiversity and Ecosystem Dynamics, University of Amsterdam, Amsterdam, The Netherlands
| | - Nigel Boatman
- Fera Science Ltd (previously Food and Environment Research Agency), Sand Hutton, York YO41 1LZ, UK
| | - Giles E Budge
- Fera Science Ltd (previously Food and Environment Research Agency), Sand Hutton, York YO41 1LZ, UK.,School of Natural and Environmental Sciences, Newcastle University, Newcastle upon Tyne NE1 7RU, UK
| | - Andrew Crowe
- Fera Science Ltd (previously Food and Environment Research Agency), Sand Hutton, York YO41 1LZ, UK
| | - Nancy Davies
- School of Biological Sciences, University of Bristol, Woodland Road, Bristol BS8 1UG, UK
| | - Rebecca Evans
- Centre for Agri-Environmental Research, School of Agriculture, Policy and Development, University of Reading, Reading RG6 6AR, UK
| | - Jane Memmott
- School of Biological Sciences, University of Bristol, Woodland Road, Bristol BS8 1UG, UK
| | - R Daniel Morton
- UK Centre for Ecology and Hydrology, Library Avenue, Bailrigg, Lancaster LA1 4AP, UK
| | - Ellen Moss
- School of Natural and Environmental Sciences, Newcastle University, Newcastle upon Tyne NE1 7RU, UK.,Centre for Agri-Environmental Research, School of Agriculture, Policy and Development, University of Reading, Reading RG6 6AR, UK
| | - Mark Murphy
- School of Biological Sciences, University of Western Australia, 35 Stirling Hwy, Perth, WA 6009, Australia
| | - Stephane Pietravalle
- Fera Science Ltd (previously Food and Environment Research Agency), Sand Hutton, York YO41 1LZ, UK
| | - Simon G Potts
- Centre for Agri-Environmental Research, School of Agriculture, Policy and Development, University of Reading, Reading RG6 6AR, UK
| | - Stuart P M Roberts
- Centre for Agri-Environmental Research, School of Agriculture, Policy and Development, University of Reading, Reading RG6 6AR, UK
| | - Clare Rowland
- UK Centre for Ecology and Hydrology, Library Avenue, Bailrigg, Lancaster LA1 4AP, UK
| | - Deepa Senapathi
- Centre for Agri-Environmental Research, School of Agriculture, Policy and Development, University of Reading, Reading RG6 6AR, UK
| | - Simon M Smart
- UK Centre for Ecology and Hydrology, Library Avenue, Bailrigg, Lancaster LA1 4AP, UK
| | - Claire Wood
- UK Centre for Ecology and Hydrology, Library Avenue, Bailrigg, Lancaster LA1 4AP, UK
| | - William E Kunin
- School of Biology, University of Leeds, Leeds LS2 9JT, UK.,Stellenbosch Institute for Advanced Study (STIAS), Wallenberg Research Centre at Stellenbosch University, Stellenbosch 7600, South Africa
| |
Collapse
|
5
|
Ropars L, Affre L, Thébault É, Geslin B. Seasonal dynamics of competition between honey bees and wild bees in a protected Mediterranean scrubland. OIKOS 2022. [DOI: 10.1111/oik.08915] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Lise Ropars
- IMBE, Aix Marseille Univ., Avignon Univ., CNRS, IRD Marseille France
| | - Laurence Affre
- IMBE, Aix Marseille Univ., Avignon Univ., CNRS, IRD Marseille France
| | - Élisa Thébault
- CNRS, Sorbonne Univ., Inst. of Ecology and Environmental Sciences of Paris Paris France
| | - Benoît Geslin
- IMBE, Aix Marseille Univ., Avignon Univ., CNRS, IRD Marseille France
| |
Collapse
|
6
|
Russo L, de Keyzer CW, Harmon-Threatt AN, LeCroy KA, MacIvor JS. The managed-to-invasive species continuum in social and solitary bees and impacts on native bee conservation. CURRENT OPINION IN INSECT SCIENCE 2021; 46:43-49. [PMID: 33540109 DOI: 10.1016/j.cois.2021.01.001] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/21/2020] [Revised: 01/12/2021] [Accepted: 01/15/2021] [Indexed: 06/12/2023]
Abstract
Invasive bee species have negative impacts on native bee species and are a source of conservation concern. The invasion of bee species is mediated by the abiotic environment, biotic communities, and propagule pressure of the invader. Each of these factors is further affected by management, which can amplify the magnitude of the impact on native bee species. The ecological traits and behavior of invasive bees also play a role in whether and to what degree they compete with or otherwise negatively affect native bee species. The magnitude of impact of an invasive bee species relates both to its population size in the introduced habitat and the degree of overlap between its resources and the resources native bees require.
Collapse
Affiliation(s)
- Laura Russo
- Department of Ecology and Evolutionary Biology, University of Tennessee, Knoxville, TN 37996, United States.
| | - Charlotte W de Keyzer
- Ecology and Evolutionary Biology, University of Toronto, Toronto, ON, M5S 3B2, Canada
| | | | - Kathryn A LeCroy
- Department of Ecology and Evolutionary Biology, University of Tennessee, Knoxville, TN 37996, United States; Ecology and Evolutionary Biology, University of Toronto, Toronto, ON, M5S 3B2, Canada; Department of Entomology, University of Illinois, Urbana, IL 61801, United States; Department of Environmental Sciences, University of Virginia, Charlottesville, VA 22903, United States; Department of Biological Sciences, University of Toronto Scarborough, Toronto, ON, M1C 1A4, Canada
| | - James Scott MacIvor
- Ecology and Evolutionary Biology, University of Toronto, Toronto, ON, M5S 3B2, Canada; Department of Biological Sciences, University of Toronto Scarborough, Toronto, ON, M1C 1A4, Canada
| |
Collapse
|
7
|
Pollination in Agroecosystems: A Review of the Conceptual Framework with a View to Sound Monitoring. LAND 2021. [DOI: 10.3390/land10050540] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
The pollination ecology in agroecosystems tackles a landscape in which plants and pollinators need to adjust, or be adjusted, to human intervention. A valid, widely applied approach is to regard pollination as a link between specific plants and their pollinators. However, recent evidence has added landscape features for a wider ecological perspective. Are we going in the right direction? Are existing methods providing pollinator monitoring tools suitable for understanding agroecosystems? In Italy, we needed to address these questions to respond to government pressure to implement pollinator monitoring in agroecosystems. We therefore surveyed the literature, grouped methods and findings, and evaluated approaches. We selected studies that may contain directions and tools directly linked to pollinators and agroecosystems. Our analysis revealed four main paths that must come together at some point: (i) the research question perspective, (ii) the advances of landscape analysis, (iii) the role of vegetation, and (iv) the gaps in our knowledge of pollinators taxonomy and behavior. An important conclusion is that the pollinator scale is alarmingly disregarded. Debate continues about what features to include in pollinator monitoring and the appropriate level of detail: we suggest that the pollinator scale should be the main driver.
Collapse
|
8
|
Zakardjian M, Geslin B, Mitran V, Franquet E, Jourdan H. Effects of Urbanization on Plant-Pollinator Interactions in the Tropics: An Experimental Approach Using Exotic Plants. INSECTS 2020; 11:insects11110773. [PMID: 33182264 PMCID: PMC7695313 DOI: 10.3390/insects11110773] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/29/2020] [Revised: 10/26/2020] [Accepted: 11/04/2020] [Indexed: 11/16/2022]
Abstract
Simple Summary Island environments of the Southwest Pacific, like New Caledonia, generally present poorly diversified bee fauna. Thus, they are particularly prone to the establishment of introduced bee species. These exotic species may compete with native bees for plant resources, disrupt pollination of native plants, and enhance the reproduction of exotic ones. To conserve local plant–pollinator interactions, it is essential to assess the factors favoring the presence and the activity of exotic bees. Here, we focused on the effects of urbanization on plant–pollinator interactions. We set up experimental plant communities composed of four exotic species in two contrasted habitats—a natural environment vs. an urban environment—and observed plant–pollinator interactions. We showed that the urban environment was largely dominated by exotic bees. We also showed that some exotic bee species can interact preferentially with a single exotic ornamental plant species. Overall, our results indicate that Nouméa is an entry point for exotic bees, which should encourage local authorities to maintain biosecurity measures to effectively limit the arrival of exogenous bees. Lastly, the use of exotic horticultural plants in green public spaces should be questioned regarding their potential attractiveness to exotic bees. Abstract Land-use changes through urbanization and biological invasions both threaten plant-pollinator networks. Urban areas host modified bee communities and are characterized by high proportions of exotic plants. Exotic species, either animals or plants, may compete with native species and disrupt plant–pollinator interactions. These threats are heightened in insular systems of the Southwest Pacific, where the bee fauna is generally poor and ecological networks are simplified. However, the impacts of these factors have seldom been studied in tropical contexts. To explore those questions, we installed experimental exotic plant communities in urban and natural contexts in New Caledonia, a plant diversity hotspot. For four weeks, we observed plant–pollinator interactions between local pollinators and our experimental exotic plant communities. We found a significantly higher foraging activity of exotic wild bees within the city, together with a strong plant–pollinator association between two exotic species. However, contrary to our expectations, the landscape context (urban vs. natural) had no effect on the activity of native bees. These results raise issues concerning how species introduced in plant–pollinator networks will impact the reproductive success of both native and exotic plants. Furthermore, the urban system could act as a springboard for alien species to disperse in natural systems and even invade them, leading to conservation concerns.
Collapse
Affiliation(s)
- Marie Zakardjian
- IMBE, Aix Marseille Univ, Avignon Université, CNRS, IRD, 13000 Marseille, France; (B.G.); (V.M.); (E.F.)
- IMBE, Aix Marseille Univ, Avignon Université, CNRS, IRD, Nouméa 98800, New Caledonia;
- Correspondence: ; Tel.: +33-(0)4-91-28-85-34
| | - Benoît Geslin
- IMBE, Aix Marseille Univ, Avignon Université, CNRS, IRD, 13000 Marseille, France; (B.G.); (V.M.); (E.F.)
| | - Valentin Mitran
- IMBE, Aix Marseille Univ, Avignon Université, CNRS, IRD, 13000 Marseille, France; (B.G.); (V.M.); (E.F.)
| | - Evelyne Franquet
- IMBE, Aix Marseille Univ, Avignon Université, CNRS, IRD, 13000 Marseille, France; (B.G.); (V.M.); (E.F.)
| | - Hervé Jourdan
- IMBE, Aix Marseille Univ, Avignon Université, CNRS, IRD, Nouméa 98800, New Caledonia;
| |
Collapse
|
9
|
Ropars L, Affre L, Aubert M, Fernandez C, Flacher F, Genoud D, Guiter F, Jaworski C, Lair X, Mutillod C, Nève G, Schurr L, Geslin B. Pollinator Specific Richness and Their Interactions With Local Plant Species: 10 Years of Sampling in Mediterranean Habitats. ENVIRONMENTAL ENTOMOLOGY 2020; 49:947-955. [PMID: 32533159 DOI: 10.1093/ee/nvaa061] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/20/2020] [Indexed: 06/11/2023]
Abstract
In the context of global pollinator decline, little is known about the protection status and ecology of many species. This lack of knowledge is particularly important for Mediterranean protected areas that harbor diverse pollinator communities and are subject to considerable anthropogenic pressures. Calanques National Park (85 km2), which is located near Marseille (France), is dominated by Mediterranean low-vegetation habitats, such as phrygana and scrublands. These habitats offer favorable conditions for pollinator species due to the important amount of floral resources. Within a 10-yr period, we recorded bee (Hymenoptera: Apoidea: Anthophila), hover fly (Diptera: Syrphidae), and bee fly (Diptera: Bombyliidae) species and their interactions with the local flora through 10 field campaigns. We caught 250 pollinator species, including 192 bees, 38 hover flies, and 20 bee flies, for a total of 2,770 specimens. We recorded seven threatened bees (six near threatened and one endangered). Among the bee species, 47.9% were below-ground nesting species, and 54.7% were generalist species. Analysis of the pollination network showed that generalist and specialist pollinators do not share the same floral resources. The Cistaceae plant family (Malvales: Cistaceae) acted as a central node in the plant-pollinator network, interacting with 52 different pollinator species, which shows the importance of large open flowers that could be easily visited by both short and long-tongued pollinators in Mediterranean habitats. The occurrence of pollinator species and their ecological traits should strongly contribute to reinforcing the available information to provide or ameliorate the conservation statuses determined by IUCN Red List.
Collapse
Affiliation(s)
- Lise Ropars
- IMBE, Aix Marseille Univ, Avignon Université, CNRS, IRD, Marseille, France
| | - Laurence Affre
- IMBE, Aix Marseille Univ, Avignon Université, CNRS, IRD, Marseille, France
| | - Matthieu Aubert
- Observatoire des Abeilles, 68 rue du Onze Novembre, Flines-lez-Raches, France
| | | | - Floriane Flacher
- IMBE, Aix Marseille Univ, Avignon Université, CNRS, IRD, Marseille, France
| | - David Genoud
- Observatoire des Abeilles, 68 rue du Onze Novembre, Flines-lez-Raches, France
| | - Frédéric Guiter
- IMBE, Aix Marseille Univ, Avignon Université, CNRS, IRD, Marseille, France
| | - Coline Jaworski
- IMBE, Aix Marseille Univ, Avignon Université, CNRS, IRD, Marseille, France
- Department of Zoology, University of Oxford, Oxford, United Kingdom
| | | | | | - Gabriel Nève
- IMBE, Aix Marseille Univ, Avignon Université, CNRS, IRD, Marseille, France
| | - Lucie Schurr
- IMBE, Aix Marseille Univ, Avignon Université, CNRS, IRD, Marseille, France
| | - Benoît Geslin
- IMBE, Aix Marseille Univ, Avignon Université, CNRS, IRD, Marseille, France
| |
Collapse
|
10
|
Egerer M, Kowarik I. Confronting the Modern Gordian Knot of Urban Beekeeping. Trends Ecol Evol 2020; 35:956-959. [PMID: 32807501 DOI: 10.1016/j.tree.2020.07.012] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2020] [Revised: 07/21/2020] [Accepted: 07/22/2020] [Indexed: 12/22/2022]
Abstract
With insect population declines, cities are important habitats for wild pollinators. Urban beekeeping is an increasingly popular activity, yet honeybees present important risks to wild insect pollinators in cities. We argue for new, scientifically evidenced urban pollinator strategies to simultaneously enhance the benefits of urban beekeeping while protecting wild pollinators.
Collapse
Affiliation(s)
- Monika Egerer
- Technische Universität Berlin, Department of Ecology, Chair of Ecosystem Sciences/Plant Ecology, Rothenburgstr. 12, 12165 Berlin, Germany.
| | - Ingo Kowarik
- Technische Universität Berlin, Department of Ecology, Chair of Ecosystem Sciences/Plant Ecology, Rothenburgstr. 12, 12165 Berlin, Germany
| |
Collapse
|
11
|
Henry M, Rodet G. The apiary influence range: A new paradigm for managing the cohabitation of honey bees and wild bee communities. ACTA OECOLOGICA-INTERNATIONAL JOURNAL OF ECOLOGY 2020. [DOI: 10.1016/j.actao.2020.103555] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
|