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Wyver C, Potts SG, Edwards M, Edwards R, Senapathi D. Spatio-temporal shifts in British wild bees in response to changing climate. Ecol Evol 2023; 13:e10705. [PMID: 38020698 PMCID: PMC10654479 DOI: 10.1002/ece3.10705] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2023] [Revised: 10/05/2023] [Accepted: 10/22/2023] [Indexed: 12/01/2023] Open
Abstract
Climate plays a major role in determining where species occur, and when they are active throughout the year. In the face of a changing climate, many species are shifting their ranges poleward. Many species are also shifting their emergence phenology. Wild bees in Great Britain are susceptible to changes in climatic conditions but little is known about historic or potential future spatio-temporal trends of many species. This study utilized a sliding window approach to assess the impacts of climate on bee emergence dates, estimating the best temperature window for predicting emergence dates for 88 species of wild bees. Using a 'middle-of-the-road' (RCP 4.5) and 'worst-case' (RCP 8.5) climate scenario for the period 2070-2079, predictions of future emergence dates were made. In general, the best predicting climate window occurred in the 0-3 months preceding emergence. Across the 40 species that showed a shift in emergence dates in response to a climate window, the mean advance was 13.4 days under RCP 4.5 and 24.9 days under RCP 8.5. Species distribution models (SDMs) were used to predict suitable climate envelopes under historic (1980-1989), current (2010-2019) and future (2070-2079 under RCP 4.5 and RCP 8.5 scenarios) climate conditions. These models predict that the climate envelope for 92% of studied species has increased since the 1980s, and for 97% and 93% of species under RCP 4.5 and RCP 8.5 respectively, this is predicted to continue, due to extension of the northern range boundary. While any range changes will be moderated by habitat availability, it highlights that Great Britain will likely experience northward shifts of bee populations in the future. By combining spatial and temporal trends, this work provides an important step towards informing conservation measures suitable for future climates, directing how interventions can be provided in the right place at the right time.
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Affiliation(s)
- Chris Wyver
- Centre for Agri‐Environmental Research, School of Agriculture, Policy and DevelopmentUniversity of ReadingReadingUK
| | - Simon G. Potts
- Centre for Agri‐Environmental Research, School of Agriculture, Policy and DevelopmentUniversity of ReadingReadingUK
| | - Mike Edwards
- Bees, Wasps and Ants Recording Society, Leaside, Carron LaneWest SussexUK
| | - Rowan Edwards
- Bees, Wasps and Ants Recording Society, Leaside, Carron LaneWest SussexUK
| | - Deepa Senapathi
- Centre for Agri‐Environmental Research, School of Agriculture, Policy and DevelopmentUniversity of ReadingReadingUK
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2
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Scharnhorst VS, Thierolf K, Neumayer J, Becsi B, Formayer H, Lanner J, Ockermüller E, Mirwald A, König B, Kriechbaum M, Meimberg H, Meyer P, Rupprecht C, Pachinger B. Changes in Community Composition and Functional Traits of Bumblebees in an Alpine Ecosystem Relate to Climate Warming. BIOLOGY 2023; 12:biology12020316. [PMID: 36829592 PMCID: PMC9953578 DOI: 10.3390/biology12020316] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/06/2023] [Revised: 02/03/2023] [Accepted: 02/10/2023] [Indexed: 02/18/2023]
Abstract
Climate warming has been observed as the main cause of changes in diversity, community composition, and spatial distribution of different plant and invertebrate species. Due to even stronger warming compared to the global mean, bumblebees in alpine ecosystems are particularly exposed to these changes. To investigate the effects of climate warming, we sampled bumblebees along an elevational gradient, compared the records with data from 1935 and 1936, and related our results to climate models. We found that bumblebee community composition differed significantly between sampling periods and that increasing temperatures in spring were the most plausible factor explaining these range shifts. In addition, species diversity estimates were significantly lower compared to historical records. The number of socio-parasitic species was significantly higher in the historical communities, while recent communities showed increases in climate generalists and forest species at lower elevations. Nevertheless, no significant changes in community-weighted means of a species temperature index (STI) or the number of cold-adapted species were detected, likely due to the historical data resolution. We conclude that the composition and functionality of bumblebee communities in the study area have been significantly affected by climate warming, with changes in land use and vegetation cover likely playing an additional important role.
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Affiliation(s)
- Victor Sebastian Scharnhorst
- Institute for Integrative Nature Conservation Research, University of Natural Resources and Life Sciences Vienna, 1180 Vienna, Austria
- Correspondence: (V.S.S.); (K.T.); Tel.: +43-1-47654-83400 (V.S.S.)
| | - Katharina Thierolf
- Institute for Integrative Nature Conservation Research, University of Natural Resources and Life Sciences Vienna, 1180 Vienna, Austria
- Correspondence: (V.S.S.); (K.T.); Tel.: +43-1-47654-83400 (V.S.S.)
| | - Johann Neumayer
- Freelance Entomologist, Obergrubstraße 18, 5161 Elixhausen, Austria
| | - Benedikt Becsi
- Institute of Meteorology and Climatology, University of Natural Resources and Life Sciences Vienna, 1180 Vienna, Austria
| | - Herbert Formayer
- Institute of Meteorology and Climatology, University of Natural Resources and Life Sciences Vienna, 1180 Vienna, Austria
| | - Julia Lanner
- Institute for Integrative Nature Conservation Research, University of Natural Resources and Life Sciences Vienna, 1180 Vienna, Austria
- Department of Ecology, University of Innsbruck, 6020 Innsbruck, Austria
| | | | - Alina Mirwald
- Institute for Integrative Nature Conservation Research, University of Natural Resources and Life Sciences Vienna, 1180 Vienna, Austria
| | - Barbara König
- Institute of Meteorology and Climatology, University of Natural Resources and Life Sciences Vienna, 1180 Vienna, Austria
| | - Monika Kriechbaum
- Institute for Integrative Nature Conservation Research, University of Natural Resources and Life Sciences Vienna, 1180 Vienna, Austria
| | - Harald Meimberg
- Institute for Integrative Nature Conservation Research, University of Natural Resources and Life Sciences Vienna, 1180 Vienna, Austria
| | - Philipp Meyer
- Institute for Integrative Nature Conservation Research, University of Natural Resources and Life Sciences Vienna, 1180 Vienna, Austria
| | - Christina Rupprecht
- Institute for Integrative Nature Conservation Research, University of Natural Resources and Life Sciences Vienna, 1180 Vienna, Austria
| | - Bärbel Pachinger
- Institute for Integrative Nature Conservation Research, University of Natural Resources and Life Sciences Vienna, 1180 Vienna, Austria
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3
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Arce AN, Cantwell-Jones A, Tansley M, Barnes I, Brace S, Mullin VE, Notton D, Ollerton J, Eatough E, Rhodes MW, Bian X, Hogan J, Hunter T, Jackson S, Whiffin A, Blagoderov V, Broad G, Judd S, Kokkini P, Livermore L, Dixit MK, Pearse WD, Gill RJ. Signatures of increasing environmental stress in bumblebee wings over the past century: Insights from museum specimens. J Anim Ecol 2023; 92:297-309. [PMID: 35978494 PMCID: PMC10086799 DOI: 10.1111/1365-2656.13788] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2021] [Accepted: 06/22/2022] [Indexed: 11/27/2022]
Abstract
Determining when animal populations have experienced stress in the past is fundamental to understanding how risk factors drive contemporary and future species' responses to environmental change. For insects, quantifying stress and associating it with environmental factors has been challenging due to a paucity of time-series data and because detectable population-level responses can show varying lag effects. One solution is to leverage historic entomological specimens to detect morphological proxies of stress experienced at the time stressors emerged, allowing us to more accurately determine population responses. Here we studied specimens of four bumblebee species, an invaluable group of insect pollinators, from five museums collected across Britain over the 20th century. We calculated the degree of fluctuating asymmetry (FA; random deviations from bilateral symmetry) between the right and left forewings as a potential proxy of developmental stress. We: (a) investigated whether baseline FA levels vary between species, and how this compares between the first and second half of the century; (b) determined the extent of FA change over the century in the four bumblebee species, and whether this followed a linear or nonlinear trend; (c) tested which annual climatic conditions correlated with increased FA in bumblebees. Species differed in their baseline FA, with FA being higher in the two species that have recently expanded their ranges in Britain. Overall, FA significantly increased over the century but followed a nonlinear trend, with the increase starting c. 1925. We found relatively warm and wet years were associated with higher FA. Collectively our findings show that FA in bumblebees increased over the 20th century and under weather conditions that will likely increase in frequency with climate change. By plotting FA trends and quantifying the contribution of annual climate conditions on past populations, we provide an important step towards improving our understanding of how environmental factors could impact future populations of wild beneficial insects.
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Affiliation(s)
- Andres N Arce
- Georgina Mace Centre for The Living Planet, Department of Life Sciences, Silwood Park, Imperial College London, Ascot, UK.,School of Engineering, Arts, Science & Technology, University of Suffolk, Ipswich, UK
| | - Aoife Cantwell-Jones
- Georgina Mace Centre for The Living Planet, Department of Life Sciences, Silwood Park, Imperial College London, Ascot, UK
| | - Michael Tansley
- Georgina Mace Centre for The Living Planet, Department of Life Sciences, Silwood Park, Imperial College London, Ascot, UK.,Department of Zoology, University of Oxford, Oxford, UK
| | - Ian Barnes
- Department of Earth Sciences, Natural History Museum, London, UK
| | - Selina Brace
- Department of Earth Sciences, Natural History Museum, London, UK
| | - Victoria E Mullin
- Department of Earth Sciences, Natural History Museum, London, UK.,Smurfit Institute of Genetics, Trinity College Dublin, Dublin, Ireland
| | - David Notton
- Department of Earth Sciences, Natural History Museum, London, UK.,National Museum Scotland, Edinburgh, UK
| | - Jeff Ollerton
- Faculty of Arts, Science and Technology, University of Northampton, Northampton, UK
| | - Emma Eatough
- Georgina Mace Centre for The Living Planet, Department of Life Sciences, Silwood Park, Imperial College London, Ascot, UK
| | - Marcus W Rhodes
- Georgina Mace Centre for The Living Planet, Department of Life Sciences, Silwood Park, Imperial College London, Ascot, UK
| | - Xueni Bian
- Georgina Mace Centre for The Living Planet, Department of Life Sciences, Silwood Park, Imperial College London, Ascot, UK.,Department of Earth Sciences, Natural History Museum, London, UK
| | - James Hogan
- Oxford University Museum of Natural History, Oxford, UK
| | | | - Simon Jackson
- Tullie House Museum and Art Gallery Trust, Cumbria, UK.,Ipswich Museum (Colchester and Ipswich Museums), Ipswich, UK
| | | | | | - Gavin Broad
- Department of Earth Sciences, Natural History Museum, London, UK
| | | | - Phaedra Kokkini
- Department of Earth Sciences, Natural History Museum, London, UK
| | | | - Mahika K Dixit
- Georgina Mace Centre for The Living Planet, Department of Life Sciences, Silwood Park, Imperial College London, Ascot, UK
| | - William D Pearse
- Georgina Mace Centre for The Living Planet, Department of Life Sciences, Silwood Park, Imperial College London, Ascot, UK
| | - Richard J Gill
- Georgina Mace Centre for The Living Planet, Department of Life Sciences, Silwood Park, Imperial College London, Ascot, UK
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4
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Whitehorn PR, Seo B, Comont RF, Rounsevell M, Brown C. The effects of climate and land use on British bumblebees: Findings from a decade of citizen‐science observations. J Appl Ecol 2022. [DOI: 10.1111/1365-2664.14191] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- Penelope R. Whitehorn
- Karlsruhe Institute of Technology Institute of Meteorology and Climate Research, Atmospheric Environmental Research (IMK‐IFU) Garmisch‐Partenkirchen Germany
- Highlands Rewilding Ltd. Drumnadrochit UK
| | - Bumsuk Seo
- Karlsruhe Institute of Technology Institute of Meteorology and Climate Research, Atmospheric Environmental Research (IMK‐IFU) Garmisch‐Partenkirchen Germany
| | | | - Mark Rounsevell
- Karlsruhe Institute of Technology Institute of Meteorology and Climate Research, Atmospheric Environmental Research (IMK‐IFU) Garmisch‐Partenkirchen Germany
- School of Geosciences University of Edinburgh Edinburgh UK
| | - Calum Brown
- Karlsruhe Institute of Technology Institute of Meteorology and Climate Research, Atmospheric Environmental Research (IMK‐IFU) Garmisch‐Partenkirchen Germany
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5
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Chesshire PR, McCabe LM, Cobb NS. Variation in Plant-Pollinator Network Structure along the Elevational Gradient of the San Francisco Peaks, Arizona. INSECTS 2021; 12:insects12121060. [PMID: 34940148 PMCID: PMC8704280 DOI: 10.3390/insects12121060] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/07/2021] [Revised: 11/18/2021] [Accepted: 11/24/2021] [Indexed: 11/16/2022]
Abstract
The structural patterns comprising bimodal pollination networks can help characterize plant-pollinator systems and the interactions that influence species distribution and diversity over time and space. We compare network organization of three plant-pollinator communities along the altitudinal gradient of the San Francisco Peaks in northern Arizona. We found that pollination networks become more nested, as well as exhibit lower overall network specialization, with increasing elevation. Greater weight of generalist pollinators at higher elevations of the San Francisco Peaks may result in plant-pollinator communities less vulnerable to future species loss due to changing climate or shifts in species distribution. We uncover the critical, more generalized pollinator species likely responsible for higher nestedness and stability at the higher elevation environment. The generalist species most important for network stability may be of the greatest interest for conservation efforts; preservation of the most important links in plant-pollinator networks may help secure the more specialized pollinators and maintain species redundancy in the face of ecological change, such as changing climate.
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Affiliation(s)
- Paige R. Chesshire
- Department of Biological Sciences, Northern Arizona University, Flagstaff, AZ 86011, USA
- Biodiversity Outreach Network (BON), Mesa, AZ 86011, USA;
- Correspondence:
| | | | - Neil S. Cobb
- Biodiversity Outreach Network (BON), Mesa, AZ 86011, USA;
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6
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Prestele R, Brown C, Polce C, Maes J, Whitehorn P. Large variability in response to projected climate and land-use changes among European bumblebee species. GLOBAL CHANGE BIOLOGY 2021; 27:4530-4545. [PMID: 34197031 DOI: 10.1111/gcb.15780] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/24/2021] [Revised: 06/11/2021] [Accepted: 06/28/2021] [Indexed: 06/13/2023]
Abstract
Bumblebees (Bombus ssp.) are among the most important wild pollinators, but many species have suffered from range declines. Land-use change, agricultural intensification, and the associated loss of habitat have been identified as drivers of the observed dynamics, amplifying pressures from a changing climate. However, these drivers are still underrepresented in continental-scale species distribution modeling. Here, we project the potential distribution of 47 European bumblebee species in 2050 and 2080 from existing European-scale distribution maps, based on a set of climate and land-use futures simulated through a regional integrated assessment model and consistent with the RCP-SSP scenario framework. We compare projections including (1) dynamic climate and constant land use (CLIM); (2) constant climate and dynamic land use (LU); and (3) dynamic climate and dynamic land use (COMB) to disentangle the effects of land use and climate change on future habitat suitability, providing the first rigorous continental-scale assessment of linked climate-land-use futures for bumblebees. We find that direct climate impacts, although variable across species, dominate responses for most species, especially under high-end climate change scenarios (up to 99% range loss). Land-use impacts are highly variable across species and scenarios, ranging from severe losses (up to 75% loss) to considerable gains (up to 68% gain) of suitable habitat extent. Rare species thereby tend to be disproportionally affected by both climate and land-use change. COMB projections reveal that land use may amplify, attenuate, or offset changes to suitable habitat extent expected from climate impact depending on species and scenario. Especially in low-end climate change scenarios, land use has the potential to become a game changer in determining the direction and magnitude of range changes, indicating substantial potential for targeted conservation management.
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Affiliation(s)
- Reinhard Prestele
- Institute of Meteorology and Climate Research, Atmospheric Environmental Research (IMK-IFU, Karlsruhe Institute of Technology (KIT), Garmisch-Partenkirchen, Germany
| | - Calum Brown
- Institute of Meteorology and Climate Research, Atmospheric Environmental Research (IMK-IFU, Karlsruhe Institute of Technology (KIT), Garmisch-Partenkirchen, Germany
| | - Chiara Polce
- European Commission, Joint Research Centre (JRC), Ispra, Italy
| | - Joachim Maes
- European Commission, Joint Research Centre (JRC), Ispra, Italy
| | - Penelope Whitehorn
- Institute of Meteorology and Climate Research, Atmospheric Environmental Research (IMK-IFU, Karlsruhe Institute of Technology (KIT), Garmisch-Partenkirchen, Germany
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7
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Hu X, Liu J, Ding G, Naeem M, Li J, Ma F, Huang J, An J. An Evaluation of Habitat Uses and Their Implications for the Conservation of the Chinese Bumblebee Bombus pyrosoma (Hymenoptera: Apidae). Front Ecol Evol 2021. [DOI: 10.3389/fevo.2021.667949] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Bumblebees are important pollinators for many wild plants and crops. However, the bumblebee populations are seriously declining in many parts of the world. Hence, the bumblebee conservation strategy should be urgently addressed, and the species distribution modeling approach can effectively evaluate the potentially suitable areas for their conservation. Here, one of the most abundant and endemic species of bumblebee in China, Bombus pyrosoma, was selected to assess current and future climates’ influence on its distribution with MaxEnt. Nine high-resolution bioclimatic/environmental variables with high contribution rates and low correlations were used. Four of the nine bioclimatic/environmental variables, min temperature of the coldest month (bio_06), annual mean temperature (bio_01), precipitation of wettest month (bio_13) and radiation of warmest quarter (bio_26), were found to be the most critical factors influencing the distribution of B. pyrosoma. The modeling results showed that the areas with high and moderate suitability for B. pyrosoma covered 141,858 and 186,198 km2 under the current climate conditions. More than 85% of the sampling sites in 2019 were found to be suitable under the current scenario. Under the future A1B and A2 scenarios in 2050 and 2100, the areas with low and moderate suitability for B. pyrosoma increased. However, alarmingly, the high suitability areas decreased under the future A1B and A2 scenarios in 2050 and 2100. Furthermore, regions covering seven provinces of northern China were the most crucial for developing nature reserves for B. pyrosoma, with the following order of suitable areas: Gansu, Shanxi, Ningxia, Qinghai, Shaanxi, Hebei and Beijing. Our study highlights the impact of future climate changes on the distribution of B. pyrosoma, and conservation strategies should mitigate the threats posed by environmental changes, particularly in the current high suitability areas.
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8
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Crossley MS, Meier AR, Baldwin EM, Berry LL, Crenshaw LC, Hartman GL, Lagos-Kutz D, Nichols DH, Patel K, Varriano S, Snyder WE, Moran MD. No net insect abundance and diversity declines across US Long Term Ecological Research sites. Nat Ecol Evol 2020; 4:1368-1376. [PMID: 32778751 DOI: 10.1038/s41559-020-1269-4] [Citation(s) in RCA: 70] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2020] [Accepted: 06/26/2020] [Indexed: 11/09/2022]
Abstract
Recent reports of dramatic declines in insect abundance suggest grave consequences for global ecosystems and human society. Most evidence comes from Europe, however, leaving uncertainty about insect population trends worldwide. We used >5,300 time series for insects and other arthropods, collected over 4-36 years at monitoring sites representing 68 different natural and managed areas, to search for evidence of declines across the United States. Some taxa and sites showed decreases in abundance and diversity while others increased or were unchanged, yielding net abundance and biodiversity trends generally indistinguishable from zero. This lack of overall increase or decline was consistent across arthropod feeding groups and was similar for heavily disturbed versus relatively natural sites. The apparent robustness of US arthropod populations is reassuring. Yet, this result does not diminish the need for continued monitoring and could mask subtler changes in species composition that nonetheless endanger insect-provided ecosystem services.
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Affiliation(s)
| | - Amanda R Meier
- Department of Entomology, University of Georgia, Athens, GA, USA
| | - Emily M Baldwin
- Department of Biology and Health Sciences, Hendrix College, Conway, AR, USA
| | - Lauren L Berry
- Department of Biology and Health Sciences, Hendrix College, Conway, AR, USA
| | - Leah C Crenshaw
- Department of Biology and Health Sciences, Hendrix College, Conway, AR, USA
| | - Glen L Hartman
- Agricultural Research Service, United States Department of Agriculture, Urbana, IL, USA
| | - Doris Lagos-Kutz
- Agricultural Research Service, United States Department of Agriculture, Urbana, IL, USA
| | - David H Nichols
- Department of Biology and Health Sciences, Hendrix College, Conway, AR, USA
| | - Krishna Patel
- Department of Biology and Health Sciences, Hendrix College, Conway, AR, USA
| | - Sofia Varriano
- Department of Biology and Health Sciences, Hendrix College, Conway, AR, USA
| | - William E Snyder
- Department of Entomology, University of Georgia, Athens, GA, USA
| | - Matthew D Moran
- Department of Biology and Health Sciences, Hendrix College, Conway, AR, USA
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9
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Geue JC, Thomassen HA. Unraveling the habitat preferences of two closely related bumble bee species in Eastern Europe. Ecol Evol 2020; 10:4773-4790. [PMID: 32551060 PMCID: PMC7297791 DOI: 10.1002/ece3.6232] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2019] [Revised: 02/20/2020] [Accepted: 02/24/2020] [Indexed: 11/09/2022] Open
Abstract
Co-occurrence of closely related species is often explained through resource partitioning, where key morphological or life-history traits evolve under strong divergent selection. In bumble bees (genus Bombus), differences in tongue lengths, nest sites, and several life-history traits are the principal factors in resource partitioning. However, the buff-tailed and white-tailed bumble bee (Bombus terrestris and B. lucorum respectively) are very similar in morphology and life history, but their ranges nevertheless partly overlap, raising the question how they are ecologically divergent. What little is known about the environmental factors determining their distributions stems from studies in Central and Western Europe, but even less information is available about their distributions in Eastern Europe, where different subspecies occur. Here, we aimed to disentangle the broad habitat requirements and associated distributions of these species in Romania and Bulgaria. First, we genetically identified sampled individuals from many sites across the study area. We then not only computed species distributions based on presence-only data, but also expanded on these models using relative abundance data. We found that B. terrestris is a more generalist species than previously thought, but that B. lucorum is restricted to forested areas with colder and wetter climates, which in our study area are primarily found at higher elevations. Both vegetation parameters such as annual mean Leaf Area Index and canopy height, as well as climatic conditions, were important in explaining their distributions. Although our models based on presence-only data suggest a large overlap in their respective distributions, results on their relative abundance suggest that the two species replace one another across an environmental gradient correlated to elevation. The inclusion of abundance enhances our understanding of the distribution of these species, supporting the emerging recognition of the importance of abundance data in species distribution modeling.
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Affiliation(s)
- Julia C. Geue
- Comparative ZoologyInstitute for Evolution and EcologyUniversity of TübingenTübingenGermany
| | - Henri A. Thomassen
- Comparative ZoologyInstitute for Evolution and EcologyUniversity of TübingenTübingenGermany
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10
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Verniest F, Greulich S. Methods for assessing the effects of environmental parameters on biological communities in long-term ecological studies - A literature review. Ecol Modell 2019. [DOI: 10.1016/j.ecolmodel.2019.108732] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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11
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Wood TJ, Gibbs J, Graham KK, Isaacs R. Narrow pollen diets are associated with declining Midwestern bumble bee species. Ecology 2019; 100:e02697. [DOI: 10.1002/ecy.2697] [Citation(s) in RCA: 46] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/07/2018] [Revised: 02/13/2019] [Accepted: 02/25/2019] [Indexed: 01/22/2023]
Affiliation(s)
- T. J. Wood
- Department of Entomology Michigan State University East Lansing Michigan 48824 USA
| | - J. Gibbs
- Department of Entomology University of Manitoba Winnipeg Manitoba R3T 2N2 Canada
| | - K. K. Graham
- Department of Entomology Michigan State University East Lansing Michigan 48824 USA
| | - R. Isaacs
- Department of Entomology Michigan State University East Lansing Michigan 48824 USA
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12
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13
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Sirois-Delisle C, Kerr JT. Climate change-driven range losses among bumblebee species are poised to accelerate. Sci Rep 2018; 8:14464. [PMID: 30337544 PMCID: PMC6194031 DOI: 10.1038/s41598-018-32665-y] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2018] [Accepted: 08/08/2018] [Indexed: 02/07/2023] Open
Abstract
Climate change has shaped bee distributions over the past century. Here, we conducted the first species-specific assessment of future climate change impacts on North American bumblebee distributions, using the most recent global change scenarios developed in the Fifth Assessment Report of the Intergovernmental Panel on Climate Change (IPCC). We assessed potential shifts in bumblebee species distributions with models generated using Maxent. We tested different assumptions about bumblebee species’ dispersal capacities, drawing on observed patterns of range shifts to date, dispersal rates observed for bumblebee queens, and, lastly, assuming unlimited dispersal. Models show significant contractions of current ranges even under scenarios in which dispersal rates were high. Results suggest that dispersal rates may not suffice for bumblebees to track climate change as rapidly as required under any IPCC scenario for future climate change. Areas where species losses are projected overlap for many species and climate scenarios, and are concentrated in eastern parts of the continent. Models also show overlap for range expansions across many species, suggesting the presence of “hotspots” where management activities could benefit many species, across all climate scenarios. Broad-scale strategies are likely to be necessary to improve bumblebee conservation prospects under climate change.
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Affiliation(s)
- Catherine Sirois-Delisle
- Canadian Facility for Ecoinformatics Research, Department of Biology, University of Ottawa, 30 Marie-Curie Private, Ottawa, ON, K1N 6N5, Canada.
| | - Jeremy T Kerr
- Canadian Facility for Ecoinformatics Research, Department of Biology, University of Ottawa, 30 Marie-Curie Private, Ottawa, ON, K1N 6N5, Canada
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14
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Mallinger RE, Gaines-Day HR, Gratton C. Do managed bees have negative effects on wild bees?: A systematic review of the literature. PLoS One 2017; 12:e0189268. [PMID: 29220412 PMCID: PMC5722319 DOI: 10.1371/journal.pone.0189268] [Citation(s) in RCA: 105] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2016] [Accepted: 11/23/2017] [Indexed: 01/13/2023] Open
Abstract
Managed bees are critical for crop pollination worldwide. As the demand for pollinator-dependent crops increases, so does the use of managed bees. Concern has arisen that managed bees may have unintended negative impacts on native wild bees, which are important pollinators in both agricultural and natural ecosystems. The goal of this study was to synthesize the literature documenting the effects of managed honey bees and bumble bees on wild bees in three areas: (1) competition for floral and nesting resources, (2) indirect effects via changes in plant communities, including the spread of exotic plants and decline of native plants, and (3) transmission of pathogens. The majority of reviewed studies reported negative effects of managed bees, but trends differed across topical areas. Of studies examining competition, results were highly variable with 53% reporting negative effects on wild bees, while 28% reported no effects and 19% reported mixed effects (varying with the bee species or variables examined). Equal numbers of studies examining plant communities reported positive (36%) and negative (36%) effects, with the remainder reporting no or mixed effects. Finally, the majority of studies on pathogen transmission (70%) reported potential negative effects of managed bees on wild bees. However, most studies across all topical areas documented the potential for impact (e.g. reporting the occurrence of competition or pathogens), but did not measure direct effects on wild bee fitness, abundance, or diversity. Furthermore, we found that results varied depending on whether managed bees were in their native or non-native range; managed bees within their native range had lesser competitive effects, but potentially greater effects on wild bees via pathogen transmission. We conclude that while this field has expanded considerably in recent decades, additional research measuring direct, long-term, and population-level effects of managed bees is needed to understand their potential impact on wild bees.
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Affiliation(s)
- Rachel E. Mallinger
- Department of Entomology, University of Wisconsin-Madison, Madison, Wisconsin, United States of America
| | - Hannah R. Gaines-Day
- Department of Entomology, University of Wisconsin-Madison, Madison, Wisconsin, United States of America
| | - Claudio Gratton
- Department of Entomology, University of Wisconsin-Madison, Madison, Wisconsin, United States of America
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Underwood E, Grace M. The use of biodiversity data in rural development programming. RESEARCH IDEAS AND OUTCOMES 2017. [DOI: 10.3897/rio.3.e20369] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Abstract
Bee declines have received much attention of late, but there is considerable debate and confusion as to the extent, significance and causes of declines. In part, this reflects conflation of data for domestic honeybees, numbers of which are largely driven by economic factors, with those for wild bees, many of which have undergone marked range contractions but for the majority of which we have no good data on population size. There is no doubt that bees are subject to numerous pressures in the modern world. The abundance and diversity of flowers has declined along with availability of suitable nest sites, bees are chronically exposed to cocktails of agrochemicals, and they are simultaneously exposed to novel parasites and pathogens accidentally spread by humans. Climate change is likely to exacerbate these problems in the future, particularly for cool- climate specialists such as bumblebees. Stressors do not act in isolation; for example pesticide exposure can impair both detoxification mechanisms and immune responses, rendering bees more susceptible to parasites. It seems certain that chronic exposure to multiple, interacting stressors is driving honeybee colony losses and declines of wild pollinators. Bees have a high profile and so their travails attract attention, but these same stressors undoubtedly bear upon other wild organisms, many of which are not monitored and have few champions. Those wild insects for which we do have population data (notably butterflies and moths) are overwhelmingly also in decline. We argue that bee declines are indicators of pervasive and ongoing environmental damage that is likely to impact broadly on biodiversity and the ecosystem services it provides.
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