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Li Y, Devenish C, Tosa MI, Luo M, Bell DM, Lesmeister DB, Greenfield P, Pichler M, Levi T, Yu DW. Combining environmental DNA and remote sensing for efficient, fine-scale mapping of arthropod biodiversity. Philos Trans R Soc Lond B Biol Sci 2024; 379:20230123. [PMID: 38705177 PMCID: PMC11070265 DOI: 10.1098/rstb.2023.0123] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Accepted: 01/31/2024] [Indexed: 05/07/2024] Open
Abstract
Arthropods contribute importantly to ecosystem functioning but remain understudied. This undermines the validity of conservation decisions. Modern methods are now making arthropods easier to study, since arthropods can be mass-trapped, mass-identified, and semi-mass-quantified into 'many-row (observation), many-column (species)' datasets, with homogeneous error, high resolution, and copious environmental-covariate information. These 'novel community datasets' let us efficiently generate information on arthropod species distributions, conservation values, uncertainty, and the magnitude and direction of human impacts. We use a DNA-based method (barcode mapping) to produce an arthropod-community dataset from 121 Malaise-trap samples, and combine it with 29 remote-imagery layers using a deep neural net in a joint species distribution model. With this approach, we generate distribution maps for 76 arthropod species across a 225 km2 temperate-zone forested landscape. We combine the maps to visualize the fine-scale spatial distributions of species richness, community composition, and site irreplaceability. Old-growth forests show distinct community composition and higher species richness, and stream courses have the highest site-irreplaceability values. With this 'sideways biodiversity modelling' method, we demonstrate the feasibility of biodiversity mapping at sufficient spatial resolution to inform local management choices, while also being efficient enough to scale up to thousands of square kilometres. This article is part of the theme issue 'Towards a toolkit for global insect biodiversity monitoring'.
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Affiliation(s)
- Yuanheng Li
- Yunnan Key Laboratory of Biodiversity and Ecological Security of Gaoligong Mountain, State Key Laboratory of Genetic Resources and Evolution, Chinese Academy of Sciences, Kunming, Yunnan 650223, People’s Republic of China
- Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, Yunnan 650223, People’s Republic of China
- Faculty of Biology, University of Duisburg-Essen, Essen 45141, Germany
| | - Christian Devenish
- School of Biological Sciences, University of East Anglia, Norwich Research Park, Norwich, Norfolk NR47TJ, UK
| | - Marie I. Tosa
- Department of Fisheries, Wildlife, and Conservation Sciences, Oregon State University, Corvallis, OR 97331, USA
| | - Mingjie Luo
- Yunnan Key Laboratory of Biodiversity and Ecological Security of Gaoligong Mountain, State Key Laboratory of Genetic Resources and Evolution, Chinese Academy of Sciences, Kunming, Yunnan 650223, People’s Republic of China
- Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, Yunnan 650223, People’s Republic of China
- Kunming College of Life Sciences, University of Chinese Academy of Sciences, Kunming, People’s Republic of China
| | - David M. Bell
- Pacific Northwest Research Station, U.S. Department of Agriculture Forest Service, Corvallis, OR 97331, USA
| | - Damon B. Lesmeister
- Department of Fisheries, Wildlife, and Conservation Sciences, Oregon State University, Corvallis, OR 97331, USA
- Pacific Northwest Research Station, U.S. Department of Agriculture Forest Service, Corvallis, OR 97331, USA
| | - Paul Greenfield
- CSIRO Energy, Lindfield, New South Wales, Australia
- School of Biological Sciences, Macquarie University, Sydney, Australia
| | | | - Taal Levi
- Department of Fisheries, Wildlife, and Conservation Sciences, Oregon State University, Corvallis, OR 97331, USA
| | - Douglas W. Yu
- Yunnan Key Laboratory of Biodiversity and Ecological Security of Gaoligong Mountain, State Key Laboratory of Genetic Resources and Evolution, Chinese Academy of Sciences, Kunming, Yunnan 650223, People’s Republic of China
- Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, Yunnan 650223, People’s Republic of China
- School of Biological Sciences, University of East Anglia, Norwich Research Park, Norwich, Norfolk NR47TJ, UK
- Center for Excellence in Animal Evolution and Genetics, Chinese Academy of Sciences, Kunming Yunnan 650223, People’s Republic of China
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Lu N, Yang H, Zhou X, Tan Y, Cai W, Jiang Q, Lu Y, Chen Y, He H, Wang S. The loss of plant functional groups increased arthropod diversity in an alpine meadow on the Tibetan Plateau. FRONTIERS IN PLANT SCIENCE 2024; 15:1305768. [PMID: 38434435 PMCID: PMC10904612 DOI: 10.3389/fpls.2024.1305768] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/02/2023] [Accepted: 02/02/2024] [Indexed: 03/05/2024]
Abstract
Plant species loss, driven by global changes and human activities, can have cascading effects on other trophic levels, such as arthropods, and alter the multitrophic structure of ecosystems. While the relationship between plant diversity and arthropod communities has been well-documented, few studies have explored the effects of species composition variation or plant functional groups. In this study, we conducted a long-term plant removal experiment to investigate the impact of plant functional group loss (specifically targeting tall grasses and sedges, as well as tall or short forbs) on arthropod diversity and their functional groups. Our findings revealed that the removal of plant functional groups resulted in increased arthropod richness, abundance and the exponential of Shannon entropy, contrary to the commonly observed positive correlation between plant diversity and consumer diversity. Furthermore, the removal of different plant groups had varying impacts on arthropod trophic levels. The removal of forbs had a more pronounced impact on herbivores compared to graminoids, but this impact did not consistently cascade to higher-trophic arthropods. Notably, the removal of short forbs had a more significant impact on predators, as evidenced by the increased richness, abundance, the exponential of Shannon entropy, inverse Simpson index and inverse Berger-Parker index of carnivores and abundance of omnivores, likely attributable to distinct underlying mechanisms. Our results highlight the importance of plant species identity in shaping arthropod communities in alpine grasslands. This study emphasizes the crucial role of high plant species diversity in controlling arthropods in natural grasslands, particularly in the context of plant diversity loss caused by global changes and human activities.
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Affiliation(s)
- Ningna Lu
- College of Life Science, Northwest Normal University, Lanzhou, China
| | - Hainian Yang
- College of Life Science, Northwest Normal University, Lanzhou, China
| | - Xianhui Zhou
- State Key Laboratory of Herbage Improvement and Grassland Agro-ecosystems, College of Ecology, Lanzhou University, Lanzhou, China
| | - Yun Tan
- College of Life Science, Northwest Normal University, Lanzhou, China
| | - Wei Cai
- College of Life Science, Northwest Normal University, Lanzhou, China
| | - Qin Jiang
- College of Life Science, Northwest Normal University, Lanzhou, China
| | - Ying Lu
- College of Life Science, Northwest Normal University, Lanzhou, China
| | - Yangyang Chen
- College of Life Science, Northwest Normal University, Lanzhou, China
| | - Haocheng He
- College of Life Science, Northwest Normal University, Lanzhou, China
| | - Sheng Wang
- State Key Laboratory of Herbage Improvement and Grassland Agro-ecosystems, College of Ecology, Lanzhou University, Lanzhou, China
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3
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Rácz IA, Szanyi S, Nagy A. Review on flower-visiting behaviour of orthopterans and setting priorities for further studies. Biol Futur 2023; 74:393-400. [PMID: 38349457 DOI: 10.1007/s42977-024-00203-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Accepted: 01/16/2024] [Indexed: 03/16/2024]
Abstract
The importance of pollination and pollinators is easy to underestimate and impossible to overstate, since its importance goes far beyond the crop production and even the maintenance of plant populations. Most terrestrial ecosystems ultimately depend on the plant-pollinator interactions formed by million years coevolution. This is essential for both the daily functioning of the ecosystems and the long-term development of biodiversity. At the same time, the loss of biodiversity caused by climate change and human activities will soon lead to an ecological crisis, a catastrophe, which could endanger our life: For example, through the decline and loss of various ecosystem services. Such may be the pollination crisis, resulted from a significant loss of pollinating insects' diversity and abundance. The discovery of a pollinator Orthoptera species has encouraged researchers in the densely populated region of Indo-Malaysia to explore the potential role of orthopterans as pollinators. Although the flower visitation of some species has been already known, the role of orthopterans in pollination is scarcely revealed. Here, we collected and reviewed the available data in order to point out some factors of their importance and set priorities that may serve as a basis for further investigations regarding ecological, evolutionary and practical points of view.
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Affiliation(s)
- I A Rácz
- Department of Evolutionary Zoology and Human Biology, Faculty of Science and Technology, University of Debrecen, Debrecen, Hungary
| | - Sz Szanyi
- Institute of Plant Protection, Faculty of Agriculture and Food Sciences and Environmental Management, University of Debrecen, Debrecen, Hungary.
| | - A Nagy
- Institute of Plant Protection, Faculty of Agriculture and Food Sciences and Environmental Management, University of Debrecen, Debrecen, Hungary
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4
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Schön JE, Tiede Y, Becker M, Donoso DA, Homeier J, Limberger O, Bendix J, Farwig N, Brandl R. Effects of leaf traits of tropical trees on the abundance and body mass of herbivorous arthropod communities. PLoS One 2023; 18:e0288276. [PMID: 37934765 PMCID: PMC10629635 DOI: 10.1371/journal.pone.0288276] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2022] [Accepted: 06/24/2023] [Indexed: 11/09/2023] Open
Abstract
In tropical forests, herbivorous arthropods remove between 7% up to 48% of leaf area, which has forced plants to evolve defense strategies. These strategies influence the palatability of leaves. Palatability, which reflects a syndrome of leaf traits, in turn influences both the abundance and the mean body mass not only of particular arthropod taxa but also of the total communities. In this study, we tested two hypotheses: (H1) The abundance of two important chewer guilds ('leaf chewers' and 'rostrum chewers'), dominant components of arthropod communities, is positively related to the palatability of host trees. (H2) Lower palatability leads to an increased mean body mass of chewers (Jarman-Bell principle). Arthropods were collected by fogging the canopies of 90 tropical trees representing 31 species in three plots at 1000 m and three at 2000 m a.s.l. Palatability was assessed by measuring several 'leaf traits' of each host tree and by conducting a feeding trial with the generalist herbivore Gryllus assimilis (Orthoptera, Gryllidae). Leaf traits provided partial support for H1, as abundance of leaf chewers but not of rostrum chewers was positively affected by the experimentally estimated palatability. There was no support for H2 as neither leaf traits nor experimentally estimated palatability affected the mean body mass of leaf chewers. The mean body mass of rostrum chewers was positively related to palatability. Thus, leaf traits and experimentally estimated palatability influenced the abundance and mean body mass of chewing arthropods on the community level. However, the data were not consistent with the Jarman-Bell principle. Overall, our results suggest that the palatability of leaves is not among the dominant factors influencing abundance and mean body mass of the community of chewing arthropod herbivores. If other factors, such as the microclimate, predation or further (a-)biotic interactions are more important has to be analyzed in refined studies.
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Affiliation(s)
- Jana E. Schön
- Department of Biology, Animal Ecology, Philipps-Universität Marburg, Marburg, Hesse, Germany
| | - Yvonne Tiede
- Department of Biology, Conservation Ecology, Philipps-Universität Marburg, Marburg, Hesse, Germany
| | - Marcel Becker
- Department of Biology, Conservation Ecology, Philipps-Universität Marburg, Marburg, Hesse, Germany
| | - David A. Donoso
- Departamento de Biología, Escuela Politécnica Nacional, Quito, Pichincha, Ecuador
| | - Jürgen Homeier
- Faculty of Resource Management, HAWK University of Applied Sciences and Arts, Göttingen, Lower Saxony, Germany
| | - Oliver Limberger
- Department of Geography, Laboratory for Climatology and Remote Sensing, Philipps-Universität Marburg, Marburg, Hesse, Germany
| | - Jörg Bendix
- Department of Geography, Laboratory for Climatology and Remote Sensing, Philipps-Universität Marburg, Marburg, Hesse, Germany
| | - Nina Farwig
- Department of Biology, Conservation Ecology, Philipps-Universität Marburg, Marburg, Hesse, Germany
| | - Roland Brandl
- Department of Biology, Animal Ecology, Philipps-Universität Marburg, Marburg, Hesse, Germany
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5
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Chimeno C, Schmidt S, Cancian de Araujo B, Perez K, von Rintelen T, Schmidt O, Hamid H, Pramesa Narakusumo R, Balke M. Abundant, diverse, unknown: Extreme species richness and turnover despite drastic undersampling in two closely placed tropical Malaise traps. PLoS One 2023; 18:e0290173. [PMID: 37585425 PMCID: PMC10431641 DOI: 10.1371/journal.pone.0290173] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2023] [Accepted: 08/03/2023] [Indexed: 08/18/2023] Open
Abstract
Arthropods account for a large proportion of animal biomass and diversity in terrestrial systems, making them crucial organisms in our environments. However, still too little is known about the highly abundant and megadiverse groups that often make up the bulk of collected samples, especially in the tropics. With molecular identification techniques ever more evolving, analysis of arthropod communities has accelerated. In our study, which was conducted within the Global Malaise trap Program (GMP) framework, we operated two closely placed Malaise traps in Padang, Sumatra, for three months. We analyzed the samples by DNA barcoding and sequenced a total of more than 70,000 insect specimens. For sequence clustering, we applied three different delimitation techniques, namely RESL, ASAP, and SpeciesIdentifier, which gave similar results. Despite our (very) limited sampling in time and space, our efforts recovered more than 10,000 BINs, of which the majority are associated with "dark taxa". Further analysis indicates a drastic undersampling of both sampling sites, meaning that the true arthropod diversity at our sampling sites is even higher. Regardless of the close proximity of both Malaise traps (< 360 m), we discovered significantly distinct communities.
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Affiliation(s)
| | - Stefan Schmidt
- Zoologische Staatssammlung München (SNSB-ZSM), Munich, Germany
| | - Bruno Cancian de Araujo
- Zoologische Staatssammlung München (SNSB-ZSM), Munich, Germany
- Entomological Biodiversity Laboratory, Federal University of Espirito Santo, Vitoria, Brazil
| | - Kate Perez
- Centre for Biodiversity Genomics, University of Guelph, Guelph, Ontario, Canada
| | - Thomas von Rintelen
- Center for Integrative Biodiversity Discovery, Museum für Naturkunde—Leibniz-Institut fur Evolutions- und Biodiversitätsforschung, Berlin, Germany
| | - Olga Schmidt
- Zoologische Staatssammlung München (SNSB-ZSM), Munich, Germany
| | - Hasmiandy Hamid
- Department of Plant Protection, Faculty of Agriculture, Universitas Andalas, Padang, Indonesia
| | - Raden Pramesa Narakusumo
- Research Center for Biosystematics and Evolution, National Research and Innovation Agency (BRIN), Museum Zoologicum Bogoriense, Cibinong, Indonesia
| | - Michael Balke
- Zoologische Staatssammlung München (SNSB-ZSM), Munich, Germany
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6
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Luo F, Bibi F, Disayathanoowat T, Ling TC. Attributes of host-specificity better explain the diversified wood-boring longhorn beetles in tropical SW China than plant species diversity. Sci Rep 2023; 13:9997. [PMID: 37339971 DOI: 10.1038/s41598-023-34511-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2022] [Accepted: 05/03/2023] [Indexed: 06/22/2023] Open
Abstract
A long-debated question in ecology is whether the hyper-diversity of tropical plant-feeding insects is a direct consequence of high tropical plant diversity or should be attributed to increases in host plant specialization. In this study, we used Cerambycidae (the wood-boring longhorn beetles whose larval stages feed on the xylems of trees and lianas) and plants as study materials to explore which hypothesis is more favoured. Multiple analyses were used to show the differences in host specificity of Cerambycidae in tropical and subtropical forests. From these analyses, we found that the alpha diversity of beetles in tropical forests was significantly higher than that in subtropical forests but not in plants. The relationship between plants and beetles was also closer in tropical areas than in subtropical areas. Our results imply that the wood-boring longhorn beetles show higher degrees of niche conservatism and host-specificity in tropical forests than in subtropical forests. The high diversity of wood-boring longhorn beetles in tropical forests might be explained to a large extent by their more finely partitioned diet breadth.
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Affiliation(s)
- Fang Luo
- CAS Key Laboratory of Tropical Forest Ecology, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Mengla, 666303, Yunnan, China
| | - Farkhanda Bibi
- Department of Botany, Garden Campus, Abdul Wali Khan University Mardan, Mardan, 23200, Pakistan
| | - Terd Disayathanoowat
- Bee Protection Laboratory, Department of Biology, Faculty of Science, Chiang Mai University, Chiang Mai, 50200, Thailand
| | - Tial C Ling
- CAS Key Laboratory of Tropical Forest Ecology, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Mengla, 666303, Yunnan, China.
- Bee Protection Laboratory, Department of Biology, Faculty of Science, Chiang Mai University, Chiang Mai, 50200, Thailand.
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7
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Zhou YD, Qian H, Jin Y, Xiao KY, Yan X, Wang QF. Geographic patterns of taxonomic and phylogenetic β-diversity of aquatic angiosperms in China. PLANT DIVERSITY 2023; 45:177-184. [PMID: 37069935 PMCID: PMC10105238 DOI: 10.1016/j.pld.2022.12.006] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/18/2022] [Revised: 12/12/2022] [Accepted: 12/14/2022] [Indexed: 06/19/2023]
Abstract
China covers a vast territory harbouring a large number of aquatic plants. Although there are many studies on the β-diversity of total, herbaceous or woody plants in China and elsewhere, few studies have focused on aquatic plants. Here, we analyse a comprehensive data set of 889 aquatic angiosperm species in China, and explore the geographic patterns and climatic correlates of total taxonomic and phylogenetic β-diversity as well as their turnover and nestedness components. Our results show that geographic patterns of taxonomic and phylogenetic β-diversity are highly congruent for aquatic angiosperms, and taxonomic β-diversity is consistently higher than phylogenetic β-diversity. The ratio between the nestedness component and total β-diversity is high in northwestern China and low in southeastern China. The geographic patterns of taxonomic and phylogenetic β-diversity of aquatic angiosperms in China are obviously affected by geographic and climatic distances, respectively. In conclusion, the geographic patterns of taxonomic and phylogenetic β-diversity of aquatic angiosperms are consistent across China. Climatic and geographic distances jointly affect the geographic patterns of β-diversity of aquatic angiosperms. Overall, our work provides insight into understanding the large-scale patterns of aquatic angiosperm β-diversity, and is a critical addition to previous studies on the macroecological patterns of terrestrial organisms.
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Affiliation(s)
- Ya-Dong Zhou
- School of Life Sciences, Nanchang University, Nanchang 330031, Jiangxi, China
| | - Hong Qian
- Research and Collections Center, Illinois State Museum, Springfield, Illinois, USA
| | - Yi Jin
- Key Laboratory of National Forestry and Grassland Administration on Biodiversity Conservation in Karst Mountainous Areas of Southwestern China, Guizhou Normal University, Guiyang, 550025, China
| | - Ke-Yan Xiao
- Wuhan Botanical Garden/Core Botanical Gardens, Chinese Academy of Sciences, Wuhan 430074, Hubei, China
| | - Xue Yan
- Wuhan Botanical Garden/Core Botanical Gardens, Chinese Academy of Sciences, Wuhan 430074, Hubei, China
- Sino-Africa Joint Research Center (SAJOREC), Chinese Academy of Sciences, Wuhan 430074, Hubei, China
| | - Qing-Feng Wang
- Wuhan Botanical Garden/Core Botanical Gardens, Chinese Academy of Sciences, Wuhan 430074, Hubei, China
- Sino-Africa Joint Research Center (SAJOREC), Chinese Academy of Sciences, Wuhan 430074, Hubei, China
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8
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Zhao L, Gao R, Liu J, Liu L, Li R, Men L, Zhang Z. Effects of Environmental Factors on the Spatial Distribution Pattern and Diversity of Insect Communities along Altitude Gradients in Guandi Mountain, China. INSECTS 2023; 14:224. [PMID: 36975909 PMCID: PMC10058187 DOI: 10.3390/insects14030224] [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: 02/16/2023] [Accepted: 02/22/2023] [Indexed: 06/18/2023]
Abstract
Understanding the distribution patterns and underlying maintenance mechanisms of insect species is a core issue in the field of insect ecology. However, research gaps remain regarding the environmental factors that determine the distribution of insect species along altitudinal gradients in Guandi Mountain, China. Here, we explored these determinants based on the distribution pattern and diversity of insect species from 1600 m to 2800 m in the Guandi Mountain, which covers all typical vegetation ecosystems in this area. Our results showed that the insect community showed certain differentiation characteristics with the altitude gradient. The results of RDA and correlation analysis also support the above speculation and indicate that soil physicochemical properties are closely related to the distribution and diversity of insect taxa orders along the altitude gradient. In addition, the soil temperature showed an obvious decreasing trend with increasing altitude, and temperature was also the most significant environmental factor affecting the insect community structure and diversity on the altitude gradient. These findings provide a reference for exploring the maintenance mechanisms affecting the structure, distribution pattern, and diversity of insect communities in mountain ecosystems, and the effects of global warming on insect communities.
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Affiliation(s)
- Lijuan Zhao
- Department of Forest Conservation, College of Forestry, Shanxi Agricultural University, Jinzhong 030801, China
- Shanxi Dangerous Forest Pest Inspection and Identification Center, Jinzhong 030801, China
| | - Ruihe Gao
- Department of Forest Conservation, College of Forestry, Shanxi Agricultural University, Jinzhong 030801, China
- Shanxi Dangerous Forest Pest Inspection and Identification Center, Jinzhong 030801, China
| | - Jiaqi Liu
- Department of Forest Conservation, College of Forestry, Shanxi Agricultural University, Jinzhong 030801, China
- Shanxi Dangerous Forest Pest Inspection and Identification Center, Jinzhong 030801, China
| | - Lei Liu
- Department of Forest Conservation, College of Forestry, Shanxi Agricultural University, Jinzhong 030801, China
- Shanxi Dangerous Forest Pest Inspection and Identification Center, Jinzhong 030801, China
| | - Rongjiao Li
- Department of Forest Conservation, College of Forestry, Shanxi Agricultural University, Jinzhong 030801, China
- Shanxi Dangerous Forest Pest Inspection and Identification Center, Jinzhong 030801, China
| | - Lina Men
- Department of Forest Conservation, College of Forestry, Shanxi Agricultural University, Jinzhong 030801, China
- Shanxi Dangerous Forest Pest Inspection and Identification Center, Jinzhong 030801, China
| | - Zhiwei Zhang
- Department of Forest Conservation, College of Forestry, Shanxi Agricultural University, Jinzhong 030801, China
- Shanxi Dangerous Forest Pest Inspection and Identification Center, Jinzhong 030801, China
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9
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Schachat SR. Examining paleobotanical databases: Revisiting trends in angiosperm folivory and unlocking the paleoecological promise of propensity score matching and specification curve analysis. Front Ecol Evol 2022. [DOI: 10.3389/fevo.2022.951547] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
Abstract
Paleobotany is at a crossroads. Long-term trends in the fossil record of plants, encompassing their interactions with herbivores and with the environment, are of the utmost relevance for predicting global change as pCO2 continues to rise. Large data compilations with the potential to elucidate those trends are increasingly easy to assemble and access. However, in contrast to modern ecology and unlike various other paleontological disciplines, paleobotany has a limited history of “big data” meta-analyses. Debates about how much data are needed to address particular questions, and about how to control for potential confounding variables, have not examined paleobotanical data. Here I demonstrate the importance of analytical best practices by applying them to a recent meta-analysis of fossil angiosperms. Two notable analytical methods discussed here are propensity score matching and specification curve analysis. The former has been used in the biomedical and behavioral sciences for decades; the latter is a more recent method of examining relationships between, and inherent biases among, models. Propensity score matching allows one to account for potential confounding variables in observational studies, and more fundamentally, provides a way to quantify whether it is possible to account for them. Specification curve analysis provides the opportunity to examine patterns across a variety of schemes for partitioning data—for example, whether fossil assemblages are binned temporally by stage, epoch, or period. To my knowledge, neither of these methods has been used previously in paleontology, however, their use permits more robust analysis of paleoecological datasets. In the example provided here, propensity score matching is used to separate latitudinal trends from differences in age, climate, and plant community composition. Specification curve analysis is used to examine the robustness of apparent latitudinal trends to the schema used for assigning fossil assemblages to latitudinal bins. These analytical methods have the potential to further unlock the promise of the plant fossil record for elucidating long-term ecological and evolutionary change.
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10
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Felix GM, Pinheiro RBP, Jorge LR, Lewinsohn TM. A framework for hierarchical compound topologies in species interaction networks. OIKOS 2022. [DOI: 10.1111/oik.09538] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Gabriel M. Felix
- Univ. Estadual de Campinas, Depto de Biologia Animal, Inst. de Biologia Campinas Brazil
| | - Rafael B. P. Pinheiro
- Univ. Estadual de Campinas, Depto de Biologia Animal, Inst. de Biologia Campinas Brazil
| | - Leonardo R. Jorge
- Inst. of Entomology, Biology Centre of the Czech Academy of Sciences České Budějovice Czechia
| | - Thomas M. Lewinsohn
- Univ. Estadual de Campinas, Depto de Biologia Animal, Inst. de Biologia Campinas Brazil
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11
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Lewinsohn TM, Almeida Neto M, Almeida A, Prado PI, Jorge LR. From insect-plant interactions to ecological networks. BIOTA NEOTROPICA 2022. [DOI: 10.1590/1676-0611-bn-2022-1399] [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 Since its inception, biodiversity has largely been understood as species diversity and assessed as such. Interactions among species or functional groups are gradually becoming part of an expanded concept of biodiversity. As a case study of the development of a research program in biodiversity, we summarize our multi-decade studies on interactions of Asteraceae and flowerhead-feeding insects in Brazil. Initially, host species were treated as independent replicates in order to assess the local and turnover components of their herbivore diversity. Research then expanded into sampling entire interactive communities of host plants and their associated herbivores in different localities and regions, enabling new research lines to be pursued. Interaction diversity could be assessed and factored into spatial and among-host components, suggesting a new field of interaction geography. Second, host specialization, a key component of interaction diversity, was reframed considering simultaneously relatedness and local availability of plant hosts. Third, with the influence of complex network theory, community-wide species interactions were probed for topological patterns. Having identified the modular structure of these plant-herbivore systems, later we demonstrated that they fit a compound hierarchical topology, in which interactions are nested within large-scale modules. In a brief survey of research funded by Fapesp, especially within the Biota-Fapesp program, we highlight several lines of internationally recognized research on interaction diversity, notably on plant-frugivore and plant-pollinator interactions, together with new theoretical models. The interplay of field studies with new theoretical and analytical approaches has established interaction diversity as an essential component for monitoring, conserving and restoring biodiversity in its broader sense.
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12
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Benson RBJ, Butler R, Close RA, Saupe E, Rabosky DL. Biodiversity across space and time in the fossil record. Curr Biol 2021; 31:R1225-R1236. [PMID: 34637736 DOI: 10.1016/j.cub.2021.07.071] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The fossil record is the primary source of information on how biodiversity has varied in deep time, providing unique insight on the long-term dynamics of diversification and their drivers. However, interpretations of fossil record diversity patterns have been much debated, with a traditional focus on global diversity through time. Problems arise because the fossil record is spatially and temporally patchy, so 'global' diversity estimates actually represent the summed diversity across a set of geographically and environmentally distinct regions that vary substantially in number and identity through time. Furthermore, a focus on global diversity lumps the signal of ecological drivers at local and regional scales with the signal of global-scale processes, including variation in the distribution of environments and in provincialism (the extent of subdivision into distinct biogeographic regions). These signals cannot be untangled by studying global diversity measures alone. These conceptual and empirical concerns necessitate a shift away from the study of 'biodiversity through time' and towards the study of 'biodiversity across time and space'. Spatially explicit investigations, including analyses of local- and regional-scale datasets, are central to achieving this and allow analysis of geographic scale, location and the environmental parameters directly experienced by organisms. So far, research in this area has revealed the stability of species richness variation among environments through time, and the potential climatic and Earth-system drivers of changing biodiversity. Ultimately, this research program promises to address key questions regarding the assembly of biodiversity, and the contributions of local-, regional- and global-scale processes to the diversification of life on Earth.
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Affiliation(s)
- Roger B J Benson
- Department of Earth Sciences, University of Oxford, South Parks Road, Oxford OX1 3AN, UK.
| | - Richard Butler
- School of Geography, Earth and Environmental Sciences, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK
| | - Roger A Close
- Department of Earth Sciences, University of Oxford, South Parks Road, Oxford OX1 3AN, UK
| | - Erin Saupe
- Department of Earth Sciences, University of Oxford, South Parks Road, Oxford OX1 3AN, UK
| | - Daniel L Rabosky
- Museum of Zoology and Department of Ecology and Evolutionary Biology, University of Michigan, Ann Arbor, MI 48109, USA
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13
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Basset Y, Jorge LR, Butterill PT, Lamarre GPA, Dahl C, Ctvrtecka R, Gripenberg S, Lewis OT, Barrios H, Brown JW, Bunyavejchewin S, Butcher BA, Cognato AI, Davies SJ, Kaman O, Klimes P, Knížek M, Miller SE, Morse GE, Novotny V, Pongpattananurak N, Pramual P, Quicke DLJ, Sakchoowong W, Umari R, Vesterinen EJ, Weiblen G, Wright SJ, Segar ST. Host specificity and interaction networks of insects feeding on seeds and fruits in tropical rainforests. OIKOS 2021. [DOI: 10.1111/oik.08152] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yves Basset
- ForestGEO, Smithsonian Tropical Research Inst., Apartado Balboa Ancon Panamá
- Biology Centre of the Czech Academy of Sciences, Inst. of Entomology Ceske Budejovice Czech Republic
- Maestria de Entomologia, Univ. de Panamá Panama City Republic of Panama
| | - Leonardo R. Jorge
- Faculty of Science, Univ. of South Bohemia Ceske Budejovice Czech Republic
- Biology Centre of the Czech Academy of Sciences, Inst. of Entomology Ceske Budejovice Czech Republic
| | - Philip T. Butterill
- Faculty of Science, Univ. of South Bohemia Ceske Budejovice Czech Republic
- Biology Centre of the Czech Academy of Sciences, Inst. of Entomology Ceske Budejovice Czech Republic
| | - Greg P. A. Lamarre
- ForestGEO, Smithsonian Tropical Research Inst., Apartado Balboa Ancon Panamá
- Biology Centre of the Czech Academy of Sciences, Inst. of Entomology Ceske Budejovice Czech Republic
| | - Chris Dahl
- Faculty of Science, Univ. of South Bohemia Ceske Budejovice Czech Republic
- Biology Centre of the Czech Academy of Sciences, Inst. of Entomology Ceske Budejovice Czech Republic
| | - Richard Ctvrtecka
- Faculty of Science, Univ. of South Bohemia Ceske Budejovice Czech Republic
- Biology Centre of the Czech Academy of Sciences, Inst. of Entomology Ceske Budejovice Czech Republic
| | - Sofia Gripenberg
- School of Biological Sciences, Univ. of Reading Reading Berkshire UK
| | | | - Héctor Barrios
- Maestria de Entomologia, Univ. de Panamá Panama City Republic of Panama
| | - John W. Brown
- National Museum of Natural History, Smithsonian Inst. Washington DC USA
| | | | - Buntika A. Butcher
- Dept of Biology, Faculty of Science, Integrative Ecology Laboratory, Chulalongkorn Univ. Phayathai Road Pathumwan Bangkok Thailand
- Center of Excellence in Entomology: Bee Biology, Diversity of Insects and Mites, Chulalongkorn Univ. Pathumwan Bangkok Thailand
| | - Anthony I. Cognato
- Dept of Entomology, Michigan State Univ., Natural Science Bldg. East Lansing MI USA
| | - Stuart J. Davies
- Forest Global Earth Observatory, Smithsonian Tropical Research Inst. and National Museum of Natural History Washington USA
| | - Ondrej Kaman
- Faculty of Science, Univ. of South Bohemia Ceske Budejovice Czech Republic
- Biology Centre of the Czech Academy of Sciences, Inst. of Entomology Ceske Budejovice Czech Republic
| | - Petr Klimes
- Biology Centre of the Czech Academy of Sciences, Inst. of Entomology Ceske Budejovice Czech Republic
| | - Miloš Knížek
- Forestry and Game Management Research Inst. Strnady Jíloviště Czech Republic
| | - Scott E. Miller
- National Museum of Natural History, Smithsonian Inst. Washington DC USA
| | | | - Vojtech Novotny
- Faculty of Science, Univ. of South Bohemia Ceske Budejovice Czech Republic
- Biology Centre of the Czech Academy of Sciences, Inst. of Entomology Ceske Budejovice Czech Republic
| | | | - Pairot Pramual
- Dept of Biology, Faculty of Science, Mahasarakham Univ., Kantharawichai District Maha Sarakham Thailand
| | - Donald L. J. Quicke
- Dept of Biology, Faculty of Science, Integrative Ecology Laboratory, Chulalongkorn Univ. Phayathai Road Pathumwan Bangkok Thailand
| | - Watana Sakchoowong
- Dept of National Parks, Forest Entomology Group, Wildlife and Plant Conservation Praholyothin Road Chatujak Bangkok Thailand
| | - Ruma Umari
- New Guinea Binatang Center Madang Papua New Guinea
| | - Eero J. Vesterinen
- Dept of Biology and Biodiversity Unit, Univ. of Turku Turku Finland
- Dept of Ecology, Swedish Univ. of Agricultural Sciences Uppsala Sweden
| | - George Weiblen
- Bell Museum and Dept of Plant and Microbial Biology, Univ. of Minnesota, Gortner Avenue St. Paul MN USA
| | - S. Joseph Wright
- ForestGEO, Smithsonian Tropical Research Inst. Balboa Ancon Panamá
| | - Simon T. Segar
- Agriculture and Environment Dept, Harper Adams Univ. Newport Shropshire UK
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14
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Dole SA, Hulcr J, Cognato AI. Species-rich bark and ambrosia beetle fauna (Coleoptera, Curculionidae, Scolytinae) of the Ecuadorian Amazonian Forest Canopy. Zookeys 2021; 1044:797-813. [PMID: 34183892 PMCID: PMC8222217 DOI: 10.3897/zookeys.1044.57849] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2020] [Accepted: 10/03/2020] [Indexed: 11/22/2022] Open
Abstract
Canopy fogging was used to sample the diversity of bark and ambrosia beetles (Coleoptera, Curculionidae, Scolytinae) at two western Amazonian rainforest sites in Ecuador. Sampling was conducted by Dr Terry Erwin and assistants from 1994–2006 and yielded 1158 samples containing 2500 scolytine specimens representing more than 400 morphospecies. Here, we analyze a subset of these data representing two ecological groups: true bark beetles (52 morphospecies) and ambrosia beetles (69 morphospecies). A high percentage of these taxa occurred as singletons and doubletons and their species accumulation curves did not reach an asymptote. Diversity estimates placed the total scolytine species richness for this taxon subset present at the two sites between 260 and 323 species. The α-diversity was remarkably high at each site, while the apparently high β-diversity was an artifact of undersampling, as shown by a Monte Carlo resampling analysis. This study demonstrates the utility of canopy fogging for the discovery of new scolytine taxa and for approximate diversity assessment, but a substantially greater sampling effort would be needed for conclusive alpha as well as beta diversity estimates.
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Affiliation(s)
- Stephanie A Dole
- Department of Entomology, California Academy of Sciences 55 Music Concourse Drive, San Francisco, CA 94118, USA Department of Entomology, California Academy of Sciences San Francisco United States of America
| | - Jiri Hulcr
- School of Forest Research and Conservation, University of Florida 136 Newins-Ziegler Hall, Gainesville, FL 32611, USA University of Florida Gainesville United States of America
| | - Anthony I Cognato
- Department of Entomology, Michigan State University 288 Farm Ln. East Lansing, MI 48824, USA Michigan State University East Lansing United States of America
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15
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Seifert CL, Jorge LR, Volf M, Wagner DL, Lamarre GPA, Miller SE, Gonzalez‐Akre E, Anderson‐Teixeira KJ, Novotný V. Seasonality affects specialisation of a temperate forest herbivore community. OIKOS 2021. [DOI: 10.1111/oik.08265] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- Carlo L. Seifert
- Biology Centre of the Czech Academy of Sciences, Inst. of Entomology České Budějovice Czech Republic
- Faculty of Science, Univ. of South Bohemia České Budějovice Czech Republic
| | - Leonardo R. Jorge
- Biology Centre of the Czech Academy of Sciences, Inst. of Entomology České Budějovice Czech Republic
- Faculty of Science, Univ. of South Bohemia České Budějovice Czech Republic
| | - Martin Volf
- Biology Centre of the Czech Academy of Sciences, Inst. of Entomology České Budějovice Czech Republic
| | - David L. Wagner
- Dept of Ecology and Evolutionary Biology, Univ. of Connecticut Storrs CT USA
| | - Greg P. A. Lamarre
- Biology Centre of the Czech Academy of Sciences, Inst. of Entomology České Budějovice Czech Republic
- Faculty of Science, Univ. of South Bohemia České Budějovice Czech Republic
| | - Scott E. Miller
- National Museum of Natural History, Smithsonian Inst. Washington D.C. USA
| | - Erika Gonzalez‐Akre
- Conservation Ecology Center, Smithsonian Conservation Biology Inst. Front Royal VA USA
| | | | - Vojtěch Novotný
- Biology Centre of the Czech Academy of Sciences, Inst. of Entomology České Budějovice Czech Republic
- Faculty of Science, Univ. of South Bohemia České Budějovice Czech Republic
- ForestGEO, Smithsonian Tropical Research Inst. Balboa Ancon Panama
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16
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Jermy T, Szentesi Á. Why are there not more herbivorous insect species? ACTA ZOOL ACAD SCI H 2021. [DOI: 10.17109/azh.67.2.119.2021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Insect species richness is estimated to exceed three million species, of which roughly half is herbivorous. Despite the vast number of species and varied life histories, the proportion of herbivorous species among plant-consuming organisms is lower than it could be due to constraints that impose limits to their diversification. These include ecological factors, such as vague interspecific competition; anatomical and physiological limits, such as neural limits and inability of handling a wide range of plant allelochemicals; phylogenetic constraints, like niche conservatism; and most importantly, a low level of concerted genetic variation necessary to a phyletic conversion. It is suggested that diversification ultimately depends on what we call the intrinsic trend of diversification of the insect genome. In support of the above, we survey the major types of host-specificity, the mechanisms and constraints of host specialization, possible pathways of speciation, and hypotheses concerning insect diversification.
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17
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Scale-dependent contribution of host-specificity and environmental factors to wood-boring longhorn beetle community assemblage in SW China. Sci Rep 2021; 11:5100. [PMID: 33658618 PMCID: PMC7930174 DOI: 10.1038/s41598-021-84511-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2020] [Accepted: 02/08/2021] [Indexed: 11/24/2022] Open
Abstract
Longhorn beetles are extremely rich wood-boring insects possessing larvae that feed on the xylem of trees and/or lianas, which have detrimental effects on plants; in turn, the hosting plants may play a fundamental role in shaping the longhorn beetle community assemblage. However, factors determining the community assemblage of wood-boring longhorn beetles, particularly along the multiple spatial scales is still in need of further exploration. In this study, we designed an experiment across several spatial scales (from local to macro scales) from tropical to temperate climate gradients in Yunnan province, southwest China to examine to what extend the attributes of host-specificity is shaping the community assemblage along different spatial scales. This study concludes that (1) the wood-boring longhorn beetles showed attributes of host-specificity to a certain degree at the community level, (2) biotic (host plant specificity) and abiotic (climatic gradients) factors jointly shaped community composition of this species along the multiple spatial scales, (3) biotic interactions have a prominent effect on the community composition of this species at local-scale while macroclimatic gradients impose the major control on it at macro-scale. Thus, this study highlights the significance of host specificity in affecting the wood-boring longhorn beetle community assemblage, particularly at local scales.
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18
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Vollstädt MGR, Albrecht J, Böhning‐Gaese K, Hemp A, Howell KM, Kettering L, Neu A, Neuschulz EL, Quitián M, Santillán VE, Töpfer T, Schleuning M, Fritz SA. Direct and plant-mediated effects of climate on bird diversity in tropical mountains. Ecol Evol 2020; 10:14196-14208. [PMID: 33391710 PMCID: PMC7771156 DOI: 10.1002/ece3.7014] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2020] [Revised: 10/09/2020] [Accepted: 10/16/2020] [Indexed: 11/15/2022] Open
Abstract
AIM Although patterns of biodiversity across the globe are well studied, there is still a controversial debate about the underlying mechanisms and their generality across biogeographic scales. In particular, it is unclear to what extent diversity patterns along environmental gradients are directly driven by abiotic factors, such as climate, or indirectly mediated through biotic factors, such as resource effects on consumers. LOCATION Andes, Southern Ecuador; Mt. Kilimanjaro, Tanzania. METHODS We studied the diversity of fleshy-fruited plants and avian frugivores at the taxonomic level, that is, species richness and abundance, as well as at the level of functional traits, that is, functional richness and functional dispersion. We compared two important biodiversity hotspots in mountain systems of the Neotropics and Afrotropics. We used field data of plant and bird communities, including trait measurements of 367 plant and bird species. Using structural equation modeling, we disentangled direct and indirect effects of climate and the diversity of plant communities on the diversity of bird communities. RESULTS We found significant bottom-up effects of fruit diversity on frugivore diversity at the taxonomic level. In contrast, climate was more important for patterns of functional diversity, with plant communities being mostly related to precipitation, and bird communities being most strongly related to temperature. MAIN CONCLUSIONS Our results illustrate the general importance of bottom-up mechanisms for the taxonomic diversity of consumers, suggesting the importance of active resource tracking. Our results also suggest that it might be difficult to identify signals of ecological fitting between functional plant and animal traits across biogeographic regions, since different species groups may respond to different climatic drivers. This decoupling between resource and consumer communities could increase under future climate change if plant and animal communities are consistently related to distinct climatic drivers.
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Affiliation(s)
- Maximilian G. R. Vollstädt
- Senckenberg Biodiversity and Climate Research Centre (SBiK‐F)Frankfurt am MainGermany
- Institute for Ecology, Evolution and DiversityGoethe UniversityFrankfurt am MainGermany
| | - Jörg Albrecht
- Senckenberg Biodiversity and Climate Research Centre (SBiK‐F)Frankfurt am MainGermany
| | - Katrin Böhning‐Gaese
- Senckenberg Biodiversity and Climate Research Centre (SBiK‐F)Frankfurt am MainGermany
- Institute for Ecology, Evolution and DiversityGoethe UniversityFrankfurt am MainGermany
| | - Andreas Hemp
- Department of Plant SystematicsUniversity of BayreuthBayreuthGermany
| | - Kim M. Howell
- Department of Zoology and Wildlife ConservationUniversity of Dar es SalaamDar es SalaamTanzania
| | - Laura Kettering
- Senckenberg Biodiversity and Climate Research Centre (SBiK‐F)Frankfurt am MainGermany
| | - Alexander Neu
- Senckenberg Biodiversity and Climate Research Centre (SBiK‐F)Frankfurt am MainGermany
- Institute for Ecology, Evolution and DiversityGoethe UniversityFrankfurt am MainGermany
| | - Eike Lena Neuschulz
- Senckenberg Biodiversity and Climate Research Centre (SBiK‐F)Frankfurt am MainGermany
| | - Marta Quitián
- Senckenberg Biodiversity and Climate Research Centre (SBiK‐F)Frankfurt am MainGermany
- Institute for Ecology, Evolution and DiversityGoethe UniversityFrankfurt am MainGermany
| | - Vinicio E. Santillán
- Senckenberg Biodiversity and Climate Research Centre (SBiK‐F)Frankfurt am MainGermany
- Institute for Ecology, Evolution and DiversityGoethe UniversityFrankfurt am MainGermany
| | - Till Töpfer
- Zoological Research Museum Alexander KoenigBonnGermany
| | - Matthias Schleuning
- Senckenberg Biodiversity and Climate Research Centre (SBiK‐F)Frankfurt am MainGermany
| | - Susanne A. Fritz
- Senckenberg Biodiversity and Climate Research Centre (SBiK‐F)Frankfurt am MainGermany
- Institute for Ecology, Evolution and DiversityGoethe UniversityFrankfurt am MainGermany
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19
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Shinohara N, Yoshida T. Why species richness of plants and herbivorous insects do or do not correlate. Ecol Res 2020. [DOI: 10.1111/1440-1703.12189] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Naoto Shinohara
- Department of Agricultural and Life Sciences University of Tokyo Tokyo Japan
| | - Takehito Yoshida
- Research Institute for Humanity and Nature Kyoto Japan
- Department of General Systems Studies University of Tokyo Tokyo Japan
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20
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Pereira Martins L, Matos Medina A, Lewinsohn TM, Almeida‐Neto M. The effect of species composition dissimilarity on plant–herbivore network structure is not consistent over time. Biotropica 2020. [DOI: 10.1111/btp.12791] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Lucas Pereira Martins
- Departamento de Ecologia Laboratório de Interações Ecológicas e Biodiversidade Universidade Federal de Goiás Goiânia, Goiás Brazil
| | - Anderson Matos Medina
- Departamento de Ecologia Laboratório de Interações Ecológicas e Biodiversidade Universidade Federal de Goiás Goiânia, Goiás Brazil
| | - Thomas M. Lewinsohn
- Laboratório de Interações Insetos‐Plantas Departamento de Biologia Animal Universidade Estadual de Campinas Campinas, São Paulo Brazil
| | - Mário Almeida‐Neto
- Departamento de Ecologia Laboratório de Interações Ecológicas e Biodiversidade Universidade Federal de Goiás Goiânia, Goiás Brazil
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21
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Rabl D, Gottsberger B, Brehm G, Hofhansl F, Fiedler K. Moth assemblages in Costa Rica rain forest mirror small‐scale topographic heterogeneity. Biotropica 2020. [DOI: 10.1111/btp.12677] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Dominik Rabl
- Division of Tropical Ecology and Animal Biodiversity Department of Botany and Biodiversity Research University of Vienna Vienna Austria
| | - Brigitte Gottsberger
- Division of Tropical Ecology and Animal Biodiversity Department of Botany and Biodiversity Research University of Vienna Vienna Austria
| | - Gunnar Brehm
- Phyletisches Museum Institut für Zoologie und Evolutionsbiologie Friedrich‐Schiller‐Universität Jena Germany
| | - Florian Hofhansl
- International Institute for Applied Systems Analysis (IIASA)Laxenburg Austria
| | - Konrad Fiedler
- Division of Tropical Ecology and Animal Biodiversity Department of Botany and Biodiversity Research University of Vienna Vienna Austria
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22
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Amancio G, Aguirre-Jaimes A, Hernández-Ortiz V, Guevara R, Quesada M. Vertical and Horizontal Trophic Networks in the Aroid-Infesting Insect Community of Los Tuxtlas Biosphere Reserve, Mexico. INSECTS 2019; 10:insects10080252. [PMID: 31443212 PMCID: PMC6722588 DOI: 10.3390/insects10080252] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/20/2019] [Revised: 08/08/2019] [Accepted: 08/09/2019] [Indexed: 12/19/2022]
Abstract
Insect-aroid interaction studies have focused largely on pollination systems; however, few report trophic interactions with other herbivores. This study features the endophagous insect community in reproductive aroid structures of a tropical rainforest of Mexico, and the shifting that occurs along an altitudinal gradient and among different hosts. In three sites of the Los Tuxtlas Biosphere Reserve in Mexico, we surveyed eight aroid species over a yearly cycle. The insects found were reared in the laboratory, quantified and identified. Data were analyzed through species interaction networks. We recorded 34 endophagous species from 21 families belonging to four insect orders. The community was highly specialized at both network and species levels. Along the altitudinal gradient, there was a reduction in richness and a high turnover of species, while the assemblage among hosts was also highly specific, with different dominant species. Our findings suggest that intrinsic plant factors could influence their occupation, and that the coexistence of distinct insect species in the assemblage could exert a direct or indirect influence on their ability to colonize such resources.
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Affiliation(s)
- Guadalupe Amancio
- Red de Interacciones Multitróficas, Instituto de Ecología A.C., Xalapa, Veracruz 91073, Mexico
| | - Armando Aguirre-Jaimes
- Red de Interacciones Multitróficas, Instituto de Ecología A.C., Xalapa, Veracruz 91073, Mexico
| | - Vicente Hernández-Ortiz
- Red de Interacciones Multitróficas, Instituto de Ecología A.C., Xalapa, Veracruz 91073, Mexico.
| | - Roger Guevara
- Red de Biologia Evolutiva, Instituto de Ecología A.C., Xalapa, Veracruz 91073, Mexico
| | - Mauricio Quesada
- Laboratorio Nacional de Análisis y Síntesis Ecológica, Escuela Nacional de Estudios Superiores Unidad Morelia, Universidad Nacional Autónoma de México, Morelia 58190 Michoacán, Mexico
- Instituto de Investigaciones en Ecosistemas y Sustentabilidad, Universidad Nacional Autónoma de México, Morelia 58190 Michoacán, Mexico
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23
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van Schalkwyk J, Pryke JS, Samways MJ, Gaigher R. Congruence between arthropod and plant diversity in a biodiversity hotspot largely driven by underlying abiotic factors. ECOLOGICAL APPLICATIONS : A PUBLICATION OF THE ECOLOGICAL SOCIETY OF AMERICA 2019; 29:e01883. [PMID: 30847972 DOI: 10.1002/eap.1883] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2018] [Revised: 01/18/2019] [Accepted: 02/14/2019] [Indexed: 06/09/2023]
Abstract
Plants often form the basis of conservation planning and management. The effectiveness of plant diversity as a surrogate for arthropod diversity was assessed in natural areas in the Kogelberg Biosphere Reserve, a floral endemism hotspot in the Cape Floristic Region (CFR), South Africa. Arthropods and plants were sampled across 30 topographically heterogeneous sites in a spatially nested design. The relationship between plants and arthropods were quantified in terms of species richness, assemblage variation, and assemblage turnover. The influence of arthropod trophic groups, habitat association, and spatial scale were also explored. Generalized dissimilarity modelling was used to investigate differential influence of explanatory groups (geology, disturbance, local site characteristics, refuge, mesoclimate, terrain) on arthropod and plant turnover. Congruence in assemblage variation was restricted to local scales, and only present between plants and those arthropods associated with the foliar component of the habitat. Weak congruence in species turnover was due to differences in the relative importance of explanatory groups, with different variables within each explanatory group being important, and similar variables predicting different turnover patterns. For both groups, variables related to geology and fire history were important for assemblage turnover. These variables are already incorporated in conservation planning and management for plant diversity across the CFR. Overall plant diversity was a weak surrogate for the arthropod groups included in this study, suggesting that as an alternative, environmental surrogates for arthropod diversity perform better.
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Affiliation(s)
- J van Schalkwyk
- Department of Conservation Ecology and Entomology, Stellenbosch University, Private Bag X1, Matieland, 7602, South Africa
| | - J S Pryke
- Department of Conservation Ecology and Entomology, Stellenbosch University, Private Bag X1, Matieland, 7602, South Africa
| | - M J Samways
- Department of Conservation Ecology and Entomology, Stellenbosch University, Private Bag X1, Matieland, 7602, South Africa
| | - R Gaigher
- Department of Conservation Ecology and Entomology, Stellenbosch University, Private Bag X1, Matieland, 7602, South Africa
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24
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Yu H, Tian E, Zheng L, Deng X, Cheng Y, Chen L, Wu W, Tanming W, Zhang D, Compton SG, Kjellberg F. Multiple parapatric pollinators have radiated across a continental fig tree displaying clinal genetic variation. Mol Ecol 2019; 28:2391-2405. [DOI: 10.1111/mec.15046] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2018] [Revised: 01/31/2019] [Accepted: 02/01/2019] [Indexed: 12/18/2022]
Affiliation(s)
- Hui Yu
- Guangdong Provincial Key Laboratory of Digital Botanical Garden and Key Laboratory of Plant Resource Conservation and Sustainable Utilization, South China Botanical Garden The Chinese Academy of Sciences Guangzhou China
- Centre for Plant Ecology, CAS Core Botanical Gardens Guangzhou China
| | - Enwei Tian
- Guangdong Provincial Key Laboratory of Digital Botanical Garden and Key Laboratory of Plant Resource Conservation and Sustainable Utilization, South China Botanical Garden The Chinese Academy of Sciences Guangzhou China
| | - Linna Zheng
- Guangdong Provincial Key Laboratory of Digital Botanical Garden and Key Laboratory of Plant Resource Conservation and Sustainable Utilization, South China Botanical Garden The Chinese Academy of Sciences Guangzhou China
| | - Xiaoxia Deng
- Guangdong Provincial Key Laboratory of Digital Botanical Garden and Key Laboratory of Plant Resource Conservation and Sustainable Utilization, South China Botanical Garden The Chinese Academy of Sciences Guangzhou China
| | - Yufen Cheng
- Guangdong Provincial Key Laboratory of Digital Botanical Garden and Key Laboratory of Plant Resource Conservation and Sustainable Utilization, South China Botanical Garden The Chinese Academy of Sciences Guangzhou China
| | - Lianfu Chen
- Guangdong Provincial Key Laboratory of Digital Botanical Garden and Key Laboratory of Plant Resource Conservation and Sustainable Utilization, South China Botanical Garden The Chinese Academy of Sciences Guangzhou China
| | - Wei Wu
- Guangdong Provincial Key Laboratory of Digital Botanical Garden and Key Laboratory of Plant Resource Conservation and Sustainable Utilization, South China Botanical Garden The Chinese Academy of Sciences Guangzhou China
| | | | - Dayong Zhang
- State Key Laboratory of Earth Surface Processes and Resource Ecology and MOE Key Laboratory for Biodiversity Science and Ecological Engineering, College of Life Sciences Beijing Normal University Beijing China
| | | | - Finn Kjellberg
- CEFE, CNR, EPHE, IRD Université de Montpellier, Université Paul‐Valéry Montpellier Montpellier France
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25
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Larose C, Rasmann S, Schwander T. Evolutionary dynamics of specialisation in herbivorous stick insects. Ecol Lett 2018; 22:354-364. [DOI: 10.1111/ele.13197] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2018] [Revised: 09/01/2018] [Accepted: 11/10/2018] [Indexed: 11/26/2022]
Affiliation(s)
- Chloé Larose
- Department of Ecology and Evolution; University of Lausanne; Lausanne Switzerland
| | - Sergio Rasmann
- Institute of Biology; University of Neuchatel; Rue Emile-Argand 11 CH-2000 Neuchâtel Switzerland
| | - Tanja Schwander
- Department of Ecology and Evolution; University of Lausanne; Lausanne Switzerland
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Tavella J, Cagnolo L. Does fire disturbance affect ant community structure? Insights from spatial co-occurrence networks. Oecologia 2018; 189:475-486. [PMID: 30539298 DOI: 10.1007/s00442-018-4320-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2017] [Accepted: 12/04/2018] [Indexed: 11/30/2022]
Abstract
The coexistence of several species involves a complex mix of positive and negative interactions that can be represented as networks. As much as other ecological features, patterns of multispecies co-occurrence are susceptible to anthropogenic disturbance. In ant communities, wildfires may enhance competitive interactions by benefiting active, aggressive species, and by increasing encounter probabilities through decreased space availability. We explored ant co-occurrence patterns by analysing the macro and microscopic structure of their interaction networks in burned and unburned habitats. We built co-occurrence networks using significant aggregations and segregations between species pairs as positive and negative interactions, respectively. We described aggregate network properties and microscopic structural changes by comparing species and interactions turnover between burned and unburned sites. We found no differences in the macroscopic structure of co-occurrence networks between different fire regimes. However, we detected changes in the composition of both species and negative interactions. Interaction turnover between networks of different habitats was mostly explained by rewiring of interactions between shared species rather than by species replacement. Our results reflected changes in ant communities in response to fire although there were no changes in global structural patterns. These changes in species and negative interactions suggest modifications in species roles translated into changes in the spatial distribution of ant species. The analysis of species co-occurrence networks is a useful tool to detect and visualize patterns in ant communities and to understand the mechanisms underlying the effects of disturbance on biodiversity.
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Affiliation(s)
- Julia Tavella
- Instituto Multidisciplinario de Biología Vegetal (IMBIV), CONICET-Universidad Nacional de Córdoba, Vélez Sarsfield 1611, 5000, Córdoba, Argentina.
| | - Luciano Cagnolo
- Instituto Multidisciplinario de Biología Vegetal (IMBIV), CONICET-Universidad Nacional de Córdoba, Vélez Sarsfield 1611, 5000, Córdoba, Argentina
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27
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Šigut M, Šigutová H, Šipoš J, Pyszko P, Kotásková N, Drozd P. Vertical canopy gradient shaping the stratification of leaf-chewer-parasitoid interactions in a temperate forest. Ecol Evol 2018; 8:7297-7311. [PMID: 30151150 PMCID: PMC6106176 DOI: 10.1002/ece3.4194] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2018] [Accepted: 04/22/2018] [Indexed: 11/30/2022] Open
Abstract
Knowledge about herbivores and their parasitoids in forest canopies remains limited, despite their diversity and ecological importance. Thus, it is important to understand the factors that shape the herbivore-parasitoid community structure, particularly the effect of vertical gradient. We investigated a quantitative community dataset of exposed and semiconcealed leaf-chewing larvae and their parasitoids along a vertical canopy gradient in a temperate forest. We sampled target insects using an elevated work platform in a 0.2 ha broadleaf deciduous forest plot in the Czech Republic. We analyzed the effect of vertical position among three canopy levels (first [lowest], second [middle], and third [highest]) and tree species on community descriptors (density, diversity, and parasitism rate) and food web structure. We also analyzed vertical patterns in density and parasitism rate between exposed and semiconcealed hosts, and the vertical preference of the most abundant parasitoid taxa in relation to their host specificity. Tree species was an important determinant of all community descriptors and food web structure. Insect density and diversity varied with the vertical gradient, but was only significant for hosts. Both host guilds were most abundant in the second level, but only the density of exposed hosts declined in the third level. Parasitism rate decreased from the first to third level. The overall parasitism rate did not differ between guilds, but semiconcealed hosts suffered lower parasitism in the third level. Less host-specific taxa (Ichneumonidae, Braconidae) operated more frequently lower in the canopy, whereas more host-specific Tachinidae followed their host distribution. The most host-specific Chalcidoidea preferred the third level. Vertical stratification of insect density, diversity, and parasitism rate was most pronounced in the tallest tree species. Therefore, our study contradicts the general paradigm of weak arthropod stratification in temperate forest canopies. However, in the network structure, vertical variation might be superseded by variation among tree species.
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Affiliation(s)
- Martin Šigut
- Department of Biology and EcologyUniversity of OstravaOstravaCzech Republic
- Institute of Environmental TechnologiesUniversity of OstravaOstravaCzech Republic
| | - Hana Šigutová
- Institute of Environmental TechnologiesUniversity of OstravaOstravaCzech Republic
| | - Jan Šipoš
- Department of Biology and EcologyUniversity of OstravaOstravaCzech Republic
- Department of Vegetation EcologyInstitute of Botany CASBrnoCzech Republic
- Department of Zoology, Fisheries, Hydrobiology and ApicultureMendel University in BrnoBrnoCzech Republic
| | - Petr Pyszko
- Department of Biology and EcologyUniversity of OstravaOstravaCzech Republic
- Institute of Environmental TechnologiesUniversity of OstravaOstravaCzech Republic
| | - Nela Kotásková
- Department of Biology and EcologyUniversity of OstravaOstravaCzech Republic
| | - Pavel Drozd
- Department of Biology and EcologyUniversity of OstravaOstravaCzech Republic
- Institute of Environmental TechnologiesUniversity of OstravaOstravaCzech Republic
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28
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Leihy RI, Duffy GA, Chown SL. Species richness and turnover among indigenous and introduced plants and insects of the Southern Ocean Islands. Ecosphere 2018. [DOI: 10.1002/ecs2.2358] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
Affiliation(s)
- Rachel I. Leihy
- School of Biological Sciences; Monash University; Victoria 3800 Australia
| | - Grant A. Duffy
- School of Biological Sciences; Monash University; Victoria 3800 Australia
| | - Steven L. Chown
- School of Biological Sciences; Monash University; Victoria 3800 Australia
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29
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Saihanna S, Tanaka T, Okamura Y, Kusumoto B, Shiono T, Hirao T, Kubota Y, Murakami M. A paradox of latitudinal leaf defense strategies in deciduous and evergreen broadleaved trees. Ecol Res 2018. [DOI: 10.1007/s11284-018-1614-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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30
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Holm S, Javoiš J, Õunap E, Davis RB, Kaasik A, Molleman F, Tasane T, Tammaru T. Reproductive behaviour indicates specificity in resource use: phylogenetic examples from temperate and tropical insects. OIKOS 2018. [DOI: 10.1111/oik.04959] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Sille Holm
- Inst. of Ecology and Earth Sciences, Univ. of Tartu; Vanemuise 46 EE-51014 Tartu Estonia
| | - Juhan Javoiš
- Inst. of Ecology and Earth Sciences, Univ. of Tartu; Vanemuise 46 EE-51014 Tartu Estonia
| | - Erki Õunap
- Inst. of Ecology and Earth Sciences, Univ. of Tartu; Vanemuise 46 EE-51014 Tartu Estonia
- Inst. of Agricultural and Environmental Sciences, Estonian Univ. of Life Sciences; Tartu Estonia
| | - Robert B. Davis
- Inst. of Ecology and Earth Sciences, Univ. of Tartu; Vanemuise 46 EE-51014 Tartu Estonia
| | - Ants Kaasik
- Inst. of Ecology and Earth Sciences, Univ. of Tartu; Vanemuise 46 EE-51014 Tartu Estonia
| | - Freerk Molleman
- Inst. of Ecology and Earth Sciences, Univ. of Tartu; Vanemuise 46 EE-51014 Tartu Estonia
- Dept of Systematic Zoology; Inst. of Environmental Biology, Faculty of Biology, A. Mickiewicz Univ.; Poznań Poland
| | - Tõnis Tasane
- Inst. of Ecology and Earth Sciences, Univ. of Tartu; Vanemuise 46 EE-51014 Tartu Estonia
| | - Toomas Tammaru
- Inst. of Ecology and Earth Sciences, Univ. of Tartu; Vanemuise 46 EE-51014 Tartu Estonia
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31
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Biomonitoring for the 21st Century: Integrating Next-Generation Sequencing Into Ecological Network Analysis. ADV ECOL RES 2018. [DOI: 10.1016/bs.aecr.2017.12.001] [Citation(s) in RCA: 49] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/04/2022]
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32
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Ma A, Bohan DA, Canard E, Derocles SA, Gray C, Lu X, Macfadyen S, Romero GQ, Kratina P. A Replicated Network Approach to ‘Big Data’ in Ecology. ADV ECOL RES 2018. [DOI: 10.1016/bs.aecr.2018.04.001] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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33
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Phylogenetic trophic specialization: a robust comparison of herbivorous guilds. Oecologia 2017; 185:551-559. [DOI: 10.1007/s00442-017-3980-7] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2016] [Accepted: 10/04/2017] [Indexed: 10/18/2022]
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34
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Peguero G, Bonal R, Sol D, Muñoz A, Sork VL, Espelta JM. Tropical insect diversity: evidence of greater host specialization in seed-feeding weevils. Ecology 2017; 98:2180-2190. [PMID: 28555746 DOI: 10.1002/ecy.1910] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/27/2017] [Revised: 04/27/2017] [Accepted: 05/10/2017] [Indexed: 11/10/2022]
Abstract
Host specialization has long been hypothesized to explain the extraordinary diversity of phytophagous insects in the tropics. However, addressing this hypothesis has proved challenging because of the risk of over-looking rare interactions, and hence biasing specialization estimations, and the difficulties to separate the diversity component attributable to insect specialization from that related to host diversity. As a result, the host specialization hypothesis lacks empirical support for important phytophagous insect clades. Here, we test the hypothesis in a radiation of seed-feeding insects, acorn weevils (Curculio spp.), sampled in temperate and tropical regions (California and Nicaragua, respectively) with an equivalent pool of oak host species. Using DNA sequences from three low-copy genes, we delimited to species level 778 weevil larvae extracted from host seeds and assessed their phylogenetic relationships by Maximum Likelihood and Bayesian inference. We then reconstructed the oak-weevil food webs and examined differences in alpha, beta and gamma diversity using Hill numbers of effective species. We found a higher alpha, beta and gamma diversity of weevils in Nicaragua compared to California despite similar richness of host species at both local and regional level. By means of Bayesian mixed models, we also found that tropical weevil species were highly specialized both in terms of host range and interaction strength, whereas their temperate congeners had a broader taxonomic and phylogenetic host spectrum. Finally, in Nicaraguan species, larval body size was highly correlated with the size of the acorns infested, as would be expected by a greater host specialization, whereas in California this relationship was absent. Altogether, these lines of evidence support the host specialization hypothesis and suggest contrasting eco-evolutionary dynamics in tropical and temperate regions even in absence of differences in host diversity.
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Affiliation(s)
- Guille Peguero
- Global Ecology Unit CREAF-CEAB-CSIC-UAB, Cerdanyola del Vallès, Spain.,CREAF, Cerdanyola del Vallès, 08193, Spain
| | - Raúl Bonal
- Forest Research Group (GIF), INDEHESA, University of Extremadura, Badajoz, Spain.,DITEG Research Group, University of Castilla-La Mancha, Ciudad Real, Spain
| | - Daniel Sol
- CREAF, Cerdanyola del Vallès, 08193, Spain.,CSIC, Cerdanyola del Vallès, 08193, Spain
| | - Alberto Muñoz
- CREAF, Cerdanyola del Vallès, 08193, Spain.,Departamento de Didáctica de las Ciencias Experimentales, Facultad de Educación, Universidad Complutense de Madrid, Madrid, Spain
| | - Victoria L Sork
- Department of Ecology and Evolutionary Biology, University of California, Los Angeles, California, USA.,Institute of the Environment and Sustainability, University of California, Los Angeles, California, USA
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35
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Kemp JE, Ellis AG. Significant Local-Scale Plant-Insect Species Richness Relationship Independent of Abiotic Effects in the Temperate Cape Floristic Region Biodiversity Hotspot. PLoS One 2017; 12:e0168033. [PMID: 28076412 PMCID: PMC5226791 DOI: 10.1371/journal.pone.0168033] [Citation(s) in RCA: 14] [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: 06/17/2016] [Accepted: 11/23/2016] [Indexed: 11/29/2022] Open
Abstract
Globally plant species richness is a significant predictor of insect richness. Whether this is the result of insect diversity responding directly to plant diversity, or both groups responding in similar ways to extrinsic factors, has been much debated. Here we assess this relationship in the Cape Floristic Region (CFR), a biodiversity hotspot. The CFR has higher plant diversity than expected from latitude (i.e., abiotic conditions), but very little is known about the diversity of insects residing in this region. We first quantify diversity relationships at multiple spatial scales for one of the dominant plant families in the CFR, the Restionaceae, and its associated insect herbivore community. Plant and insect diversity are significantly positively correlated at the local scales (10–50 m; 0.1–3 km), but not at the regional scales (15–20 km; 50–70 km). The local scale relationship remains significantly positively correlated even when accounting for the influence of extrinsic variables and other vegetation attributes. This suggests that the diversity of local insect assemblages may be more strongly influenced by plant species richness than by abiotic variables. Further, vegetation age and plant structural complexity also influenced insect richness. The ratio of insect species per plant species in the CFR is comparable to other temperate regions around the world, suggesting that the insect diversity of the CFR is high relative to other areas of the globe with similar abiotic conditions, primarily as a result of the unusually high plant diversity in the region.
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Affiliation(s)
- Jurene E. Kemp
- Botany and Zoology Department, Stellenbosch University, Matieland, South Africa
- * E-mail: (JEK); (AGE)
| | - Allan G. Ellis
- Botany and Zoology Department, Stellenbosch University, Matieland, South Africa
- * E-mail: (JEK); (AGE)
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36
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Pigot AL, Trisos CH, Tobias JA. Functional traits reveal the expansion and packing of ecological niche space underlying an elevational diversity gradient in passerine birds. Proc Biol Sci 2016; 283:rspb.2015.2013. [PMID: 26740616 DOI: 10.1098/rspb.2015.2013] [Citation(s) in RCA: 122] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Variation in species richness across environmental gradients may be associated with an expanded volume or increased packing of ecological niche space. However, the relative importance of these alternative scenarios remains unknown, largely because standardized information on functional traits and their ecological relevance is lacking for major diversity gradients. Here, we combine data on morphological and ecological traits for 523 species of passerine birds distributed across an Andes-to-Amazon elevation gradient. We show that morphological traits capture substantial variation in species dietary (75%) and foraging niches (60%) when multiple independent trait dimensions are considered. Having established these relationships, we show that the 14-fold increase in species richness towards the lowlands is associated with both an increased volume and density of functional trait space. However, we find that increases in volume contribute little to changes in richness, with most (78%) lowland species occurring within the range of trait space occupied at high elevations. Taken together, our results suggest that high species richness is mainly associated with a denser occupation of functional trait space, implying an increased specialization or overlap of ecological niches, and supporting the view that niche packing is the dominant trend underlying gradients of increasing biodiversity towards the lowland tropics.
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Affiliation(s)
- Alex L Pigot
- Centre for Ecological and Evolutionary Studies, Faculty of Mathematics and Natural Sciences, University of Groningen, Groningen 9747 AG, The Netherlands Edward Grey Institute, Department of Zoology, University of Oxford, Oxford OX1 3PS, UK
| | - Christopher H Trisos
- Edward Grey Institute, Department of Zoology, University of Oxford, Oxford OX1 3PS, UK National Socio-Environmental Synthesis Center (SESYNC), 1 Park Place, Suite 300, Annapolis, MD 21401, USA
| | - Joseph A Tobias
- Edward Grey Institute, Department of Zoology, University of Oxford, Oxford OX1 3PS, UK Department of Life Sciences, Imperial College London, Silwood Park, Buckhurst Road, Ascot, Berkshire SL5 7PY, UK
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37
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Zhang K, Lin S, Ji Y, Yang C, Wang X, Yang C, Wang H, Jiang H, Harrison RD, Yu DW. Plant diversity accurately predicts insect diversity in two tropical landscapes. Mol Ecol 2016; 25:4407-19. [PMID: 27474399 DOI: 10.1111/mec.13770] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2015] [Revised: 06/11/2016] [Accepted: 07/13/2016] [Indexed: 11/29/2022]
Abstract
Plant diversity surely determines arthropod diversity, but only moderate correlations between arthropod and plant species richness had been observed until Basset et al. (Science, 338, 2012 and 1481) finally undertook an unprecedentedly comprehensive sampling of a tropical forest and demonstrated that plant species richness could indeed accurately predict arthropod species richness. We now require a high-throughput pipeline to operationalize this result so that we can (i) test competing explanations for tropical arthropod megadiversity, (ii) improve estimates of global eukaryotic species diversity, and (iii) use plant and arthropod communities as efficient proxies for each other, thus improving the efficiency of conservation planning and of detecting forest degradation and recovery. We therefore applied metabarcoding to Malaise-trap samples across two tropical landscapes in China. We demonstrate that plant species richness can accurately predict arthropod (mostly insect) species richness and that plant and insect community compositions are highly correlated, even in landscapes that are large, heterogeneous and anthropogenically modified. Finally, we review how metabarcoding makes feasible highly replicated tests of the major competing explanations for tropical megadiversity.
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Affiliation(s)
- Kai Zhang
- State Key Laboratory of Genetic Resources and Evolution, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, 650223, China.,Kunming College of Life Science, University of Chinese Academy of Sciences, Kunming, 650204, China
| | - Siliang Lin
- School of Life Sciences, South China Normal University, Guangzhou, 510631, China
| | - Yinqiu Ji
- State Key Laboratory of Genetic Resources and Evolution, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, 650223, China
| | - Chenxue Yang
- State Key Laboratory of Genetic Resources and Evolution, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, 650223, China
| | - Xiaoyang Wang
- State Key Laboratory of Genetic Resources and Evolution, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, 650223, China.,Kunming College of Life Science, University of Chinese Academy of Sciences, Kunming, 650204, China
| | - Chunyan Yang
- State Key Laboratory of Genetic Resources and Evolution, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, 650223, China
| | - Hesheng Wang
- Hainan Yinggeling National Nature Reserve, Baisha, 572800, China
| | - Haisheng Jiang
- School of Life Sciences, South China Normal University, Guangzhou, 510631, China
| | - Rhett D Harrison
- World Agroforestry Center, East and Central Asia Regional Office, Kunming, 650201, China.,Center for Mountain Ecosystem Studies (CMES), Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, China
| | - Douglas W Yu
- State Key Laboratory of Genetic Resources and Evolution, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, 650223, China.,School of Biological Sciences, University of East Anglia, Norwich Research Park, Norwich, Norfolk, NR47TJ, UK
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38
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López-Carretero A, Boege K, Díaz-Castelazo C, Domínguez Z, Rico-Gray V. Influence of plant resistance traits in selectiveness and species strength in a tropical plant-herbivore network. AMERICAN JOURNAL OF BOTANY 2016; 103:1436-1448. [PMID: 27539260 DOI: 10.3732/ajb.1600045] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2016] [Accepted: 06/20/2016] [Indexed: 06/06/2023]
Abstract
PREMISE OF THE STUDY Plant-herbivore networks are highly specialized in their interactions, yet they are highly variable with regard to the relative importance of specific host species for herbivores. How host species traits determine specialization and species strength in this antagonistic network is still an unanswered question that we addressed in this study. METHODS We assessed plant cover and antiherbivore resistance traits to assess the extent to which they accounted for the variation in specialization and strength of interactions among species in a plant-herbivore network. We studied a tropical antagonistic network including a diverse herbivore-host plant assemblages in different habitat types and climatic seasons, including host plants with different life histories. KEY RESULTS Particular combinations of leaf toughness, trichome density, and phenolic compounds influenced herbivore specialization and host species strength, but with a significant spatiotemporal variation among plant life histories. Conversely, plant-herbivore network parameters were not influenced by plant cover. CONCLUSIONS Our study highlights the importance of species-specific resistance traits of plants to understand the ecological and evolutionary consequences of plant-herbivore interaction networks. The novelty of our research lies in the use of a trait-based approach to understand the variation observed in diverse plant-herbivore networks.
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Affiliation(s)
| | - Karina Boege
- Instituto de Ecología, Universidad Nacional Autónoma de México, Ciudad de México, México
| | | | - Zaira Domínguez
- Unidad de Servicios de Apoyo en Resolución Analítica, Universidad Veracruzana, Xalapa, Veracruz, México
| | - Víctor Rico-Gray
- Instituto de Neuroetología, Universidad Veracruzana, Xalapa, Veracruz, México
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39
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Roslin T, Majaneva S. The use of DNA barcodes in food web construction-terrestrial and aquatic ecologists unite! Genome 2016; 59:603-28. [PMID: 27484156 DOI: 10.1139/gen-2015-0229] [Citation(s) in RCA: 68] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
By depicting who eats whom, food webs offer descriptions of how groupings in nature (typically species or populations) are linked to each other. For asking questions on how food webs are built and work, we need descriptions of food webs at different levels of resolution. DNA techniques provide opportunities for highly resolved webs. In this paper, we offer an exposé of how DNA-based techniques, and DNA barcodes in particular, have recently been used to construct food web structure in both terrestrial and aquatic systems. We highlight how such techniques can be applied to simultaneously improve the taxonomic resolution of the nodes of the web (i.e., the species), and the links between them (i.e., who eats whom). We end by proposing how DNA barcodes and DNA information may allow new approaches to the construction of larger interaction webs, and overcome some hurdles to achieving adequate sample size. Most importantly, we propose that the joint adoption and development of these techniques may serve to unite approaches to food web studies in aquatic and terrestrial systems-revealing the extent to which food webs in these environments are structured similarly to or differently from each other, and how they are linked by dispersal.
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Affiliation(s)
- Tomas Roslin
- a Department of Ecology, Swedish University of Agricultural Sciences, Box 7044, 750 07 Uppsala, Sweden.,b Spatial Foodweb Ecology Group, Department of Agricultural Sciences, PO Box 27, (Latokartanonkaari 5), FI-00014 University of Helsinki, Finland
| | - Sanna Majaneva
- c Centre for Ecology and Evolution in Microbial model Systems (EEMiS), Department of Biology and Environmental Science, Linnaeus University, 39182 Kalmar, Sweden
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40
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Scherrer S, Lepesqueur C, Vieira MC, Almeida‐Neto M, Dyer L, Forister M, Diniz IR. Seasonal variation in diet breadth of folivorous Lepidoptera in the Brazilian cerrado. Biotropica 2016. [DOI: 10.1111/btp.12325] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Scheila Scherrer
- Programa de Pós‐graduação em Ecologia Instituto de Ciências Biológicas Universidade de Brasília Colégio Militar de Brasília CEP 70910‐900 Brasília DF Brazil
| | - Cintia Lepesqueur
- Departamento de Zoologia Instituto de Ciências Biológicas Universidade de Brasília CEP 70910‐900 Brasília DF Brazil
| | - Marcos C. Vieira
- Programa de Pós‐graduação em Ecologia e Evolução Instituto de Ciências Biológicas Universidade Federal de Goiás CEP 74001‐970 Goiânia GO Brazil
| | - Mário Almeida‐Neto
- Departamento de Ecologia Instituto de Ciências Biológicas Universidade Federal de Goiás CEP 74001‐970 Goiânia GO Brazil
| | - Lee Dyer
- Biology Department University of Nevada Reno Reno Nevada 89557 U.S.A
| | - Matt Forister
- Biology Department University of Nevada Reno Reno Nevada 89557 U.S.A
| | - Ivone Rezende Diniz
- Departamento de Zoologia Instituto de Ciências Biológicas Universidade de Brasília CEP 70910‐900 Brasília DF Brazil
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41
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Benítez-Malvido J, Dáttilo W, Martínez-Falcón AP, Durán-Barrón C, Valenzuela J, López S, Lombera R. The Multiple Impacts of Tropical Forest Fragmentation on Arthropod Biodiversity and on their Patterns of Interactions with Host Plants. PLoS One 2016; 11:e0146461. [PMID: 26731271 PMCID: PMC4701723 DOI: 10.1371/journal.pone.0146461] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2015] [Accepted: 12/17/2015] [Indexed: 12/03/2022] Open
Abstract
Tropical rain forest fragmentation affects biotic interactions in distinct ways. Little is known, however, about how fragmentation affects animal trophic guilds and their patterns of interactions with host plants. In this study, we analyzed changes in biotic interactions in forest fragments by using a multitrophic approach. For this, we classified arthropods associated with Heliconia aurantiaca herbs into broad trophic guilds (omnivores, herbivores and predators) and assessed the topological structure of intrapopulation plant-arthropod networks in fragments and continuous forests. Habitat type influenced arthropod species abundance, diversity and composition with greater abundance in fragments but greater diversity in continuous forest. According to trophic guilds, coleopteran herbivores were more abundant in continuous forest and overall omnivores in fragments. Continuous forest showed a greater diversity of interactions than fragments. Only in fragments, however, did the arthropod community associated with H aurantiaca show a nested structure, suggesting novel and/or opportunistic host-arthropod associations. Plants, omnivores and predators contributed more to nestedness than herbivores. Therefore, Heliconia-arthropod network properties do not appear to be maintained in fragments mainly caused by the decrease of herbivores. Our study contributes to the understanding of the impact of fragmentation on the structure and dynamics of multitrophic arthropod communities associated with a particular plant species of the highly biodiverse tropical forests. Nevertheless, further replication of study sites is needed to strengthen the conclusion that forest fragmentation negatively affects arthropod assemblages.
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Affiliation(s)
- Julieta Benítez-Malvido
- Laboratorio de Ecología del Hábitat Alterado, Instituto de Investigaciones en Ecosistemas y Sustentabilidad, Universidad Nacional Autónoma de México (UNAM), Morelia, Michoacán, Mexico
- * E-mail:
| | - Wesley Dáttilo
- Instituto de Ecología AC, Red de Ecoetología, Xalapa, Veracruz, Mexico
| | - Ana Paola Martínez-Falcón
- Laboratorio de Ecología del Hábitat Alterado, Instituto de Investigaciones en Ecosistemas y Sustentabilidad, Universidad Nacional Autónoma de México (UNAM), Morelia, Michoacán, Mexico
- Centro de Investigaciones Biológicas, Universidad Autónoma del Estado de Hidalgo, Apartado postal 69–1, 42001 Pachuca, Hidalgo, Mexico
| | - César Durán-Barrón
- Departamento de Zoología, Instituto de Biología, Universidad Nacional Autónoma de México, A.P. 70–153, México, Distrito Federal C. P., 04510
| | - Jorge Valenzuela
- Instituto de Ecología AC, Red de Ecología Funcional, Xalapa, Veracruz, Mexico
| | - Sara López
- Departamento de Zoología, Instituto de Biología, Universidad Nacional Autónoma de México, A.P. 70–153, México, Distrito Federal C. P., 04510
| | - Rafael Lombera
- Universidad Intercultural de Chiapas, Unidad Académica Multidisciplinaria Las Margaritas, Chiapas, Mexico
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Morrow JL, Frommer M, Royer JE, Shearman DCA, Riegler M. Wolbachia pseudogenes and low prevalence infections in tropical but not temperate Australian tephritid fruit flies: manifestations of lateral gene transfer and endosymbiont spillover? BMC Evol Biol 2015; 15:202. [PMID: 26385192 PMCID: PMC4575488 DOI: 10.1186/s12862-015-0474-2] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2015] [Accepted: 09/03/2015] [Indexed: 11/10/2022] Open
Abstract
Background Maternally inherited Wolbachia bacteria infect many insect species. They can also be transferred horizontally into uninfected host lineages. A Wolbachia spillover from an infected source population must occur prior to the establishment of heritable infections, but this spillover may be transient. In a previous study of tephritid fruit fly species of tropical Australia we detected a high incidence of identical Wolbachia strains in several species as well as Wolbachia pseudogenes. Here, we have investigated this further by analysing field specimens of 24 species collected along a 3,000 km climate gradient of eastern Australia. Results Wolbachia sequences were detected in individuals of nine of the 24 (37 %) species. Seven (29 %) species displayed four distinct Wolbachia strains based on characterisation of full multi locus sequencing (MLST) profiles; the strains occurred as single and double infections in a small number of individuals (2–17 %). For the two remaining species all individuals had incomplete MLST profiles and Wolbachia pseudogenes that may be indicative of lateral gene transfer into host genomes. The detection of Wolbachia was restricted to northern Australia, including in five species that only occur in the tropics. Within the more widely distributed Bactrocera tryoni and Bactrocera neohumeralis, Wolbachia also only occurred in the north, and was not linked to any particular mitochondrial haplotypes. Conclusions The presence of Wolbachia pseudogenes at high prevalence in two species in absence of complete MLST profiles may represent footprints of historic infections that have been lost. The detection of identical low prevalence strains in a small number of individuals of seven species may question their role as reproductive manipulator and their vertical inheritance. Instead, the findings may be indicative of transient infections that result from spillover events from a yet unknown source. These spillover events appear to be restricted to northern Australia, without proliferation in host lineages further south. Our study highlights that tropical fruit fly communities contain Wolbachia pseudogenes and may be exposed to frequent horizontal Wolbachia transfer. It also emphasises that global estimates of Wolbachia frequencies may need to consider lateral gene transfer and Wolbachia spillover that may be regionally restricted, transient and not inherited. Electronic supplementary material The online version of this article (doi:10.1186/s12862-015-0474-2) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Jennifer L Morrow
- Hawkesbury Institute for the Environment, Western Sydney University, Locked Bag 1797, Penrith, NSW, 2751, Australia.
| | - Marianne Frommer
- Evolution and Ecology Research Centre, School of Biological, Earth and Environmental Sciences, University of New South Wales, Sydney, NSW, 2052, Australia.
| | - Jane E Royer
- Queensland Department of Agriculture and Fisheries, EcoSciences Precinct, 41 Boggo Road, Dutton Park, QLD, 4102, Australia.
| | - Deborah C A Shearman
- Evolution and Ecology Research Centre, School of Biological, Earth and Environmental Sciences, University of New South Wales, Sydney, NSW, 2052, Australia.
| | - Markus Riegler
- Hawkesbury Institute for the Environment, Western Sydney University, Locked Bag 1797, Penrith, NSW, 2751, Australia.
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Wirta HK, Vesterinen EJ, Hambäck PA, Weingartner E, Rasmussen C, Reneerkens J, Schmidt NM, Gilg O, Roslin T. Exposing the structure of an Arctic food web. Ecol Evol 2015; 5:3842-56. [PMID: 26380710 PMCID: PMC4567885 DOI: 10.1002/ece3.1647] [Citation(s) in RCA: 69] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2015] [Revised: 06/16/2015] [Accepted: 07/09/2015] [Indexed: 02/06/2023] Open
Abstract
How food webs are structured has major implications for their stability and dynamics. While poorly studied to date, arctic food webs are commonly assumed to be simple in structure, with few links per species. If this is the case, then different parts of the web may be weakly connected to each other, with populations and species united by only a low number of links. We provide the first highly resolved description of trophic link structure for a large part of a high-arctic food web. For this purpose, we apply a combination of recent techniques to describing the links between three predator guilds (insectivorous birds, spiders, and lepidopteran parasitoids) and their two dominant prey orders (Diptera and Lepidoptera). The resultant web shows a dense link structure and no compartmentalization or modularity across the three predator guilds. Thus, both individual predators and predator guilds tap heavily into the prey community of each other, offering versatile scope for indirect interactions across different parts of the web. The current description of a first but single arctic web may serve as a benchmark toward which to gauge future webs resolved by similar techniques. Targeting an unusual breadth of predator guilds, and relying on techniques with a high resolution, it suggests that species in this web are closely connected. Thus, our findings call for similar explorations of link structure across multiple guilds in both arctic and other webs. From an applied perspective, our description of an arctic web suggests new avenues for understanding how arctic food webs are built and function and of how they respond to current climate change. It suggests that to comprehend the community-level consequences of rapid arctic warming, we should turn from analyses of populations, population pairs, and isolated predator-prey interactions to considering the full set of interacting species.
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Affiliation(s)
- Helena K Wirta
- Department of Agricultural Sciences, University of Helsinki Latokartanonkaari 5, FI-00014, Helsinki, Finland
| | - Eero J Vesterinen
- Department of Biology, University of Turku Vesilinnantie 5, FI-20014, Turku, Finland
| | - Peter A Hambäck
- Department of Ecology, Environment and Plant Sciences, Stockholm University SE-106 91, Stockholm, Sweden
| | - Elisabeth Weingartner
- Department of Ecology, Environment and Plant Sciences, Stockholm University SE-106 91, Stockholm, Sweden
| | - Claus Rasmussen
- Department of Bioscience, Aarhus University Ny Munkegade 114, DK-8000, Aarhus, Denmark
| | - Jeroen Reneerkens
- Conservation Ecology Group, Groningen Institute for Evolutionary Life Sciences, University of Groningen P.O. Box 11103, 9700 CC, Groningen, The Netherlands ; Arctic Research Centre, Department of Bioscience, Aarhus University Frederiksborgvej 399, DK-4000, Roskilde, Denmark
| | - Niels M Schmidt
- Arctic Research Centre, Department of Bioscience, Aarhus University Frederiksborgvej 399, DK-4000, Roskilde, Denmark
| | - Olivier Gilg
- Laboratoire Biogéosciences, UMR CNRS 6282, Université de Bourgogne 6 Boulevard Gabriel, 21000, Dijon, France ; Groupe de Recherche en Ecologie Arctique 16 rue de Vernot, 21440, Francheville, France
| | - Tomas Roslin
- Department of Agricultural Sciences, University of Helsinki Latokartanonkaari 5, FI-00014, Helsinki, Finland
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Martínez E, Rös M, Bonilla MA, Dirzo R. Habitat Heterogeneity Affects Plant and Arthropod Species Diversity and Turnover in Traditional Cornfields. PLoS One 2015. [PMID: 26197473 PMCID: PMC4510542 DOI: 10.1371/journal.pone.0128950] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The expansion of the agricultural frontier by the clearing of remnant forests has led to human-dominated landscape mosaics. Previous studies have evaluated the effect of these landscape mosaics on arthropod diversity at local spatial scales in temperate and tropical regions, but little is known about fragmentation effects in crop systems, such as the complex tropical traditional crop systems that maintain a high diversity of weeds and arthropods in low-Andean regions. To understand the factors that influence patterns of diversity in human-dominated landscapes, we investigate the effect of land use types on plant and arthropod diversity in traditionally managed cornfields, via surveys of plants and arthropods in twelve traditional cornfields in the Colombian Andes. We estimated alpha and beta diversity to analyze changes in diversity related to land uses within a radius of 100 m to 1 km around each cornfield. We observed that forests influenced alpha diversity of plants, but not of arthropods. Agricultural lands had a positive relationship with plants and herbivores, but a negative relationship with predators. Pastures positively influenced the diversity of plants and arthropods. In addition, forest cover seemed to influence changes in plant species composition and species turnover of herbivore communities among cornfields. The dominant plant species varied among fields, resulting in high differentiation of plant communities. Predator communities also exhibited high turnover among cornfields, but differences in composition arose mainly among rare species. The crop system evaluated in this study represents a widespread situation in the tropics, therefore, our results can be of broad significance. Our findings suggest that traditional agriculture may not homogenize biological communities, but instead could maintain the regional pool of species through high beta diversity.
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Affiliation(s)
- Eliana Martínez
- Escuela de Posgrados, Facultad de Ciencias Agrarias, Universidad Nacional de Colombia, Bogotá, Colombia
- * E-mail:
| | - Matthias Rös
- Instituto de Ecología A. C., Red de Ecoetología, Xalapa, México
- Centro Interdisciplinario de Investigación para el Desarrollo Integral Regional, Instituto Politécnico Nacional, Oaxaca, México
| | - María Argenis Bonilla
- Departamento de Biología, Facultad de Ciencias, Universidad Nacional de Colombia, Bogotá, Colombia
| | - Rodolfo Dirzo
- Department of Biology, Stanford University, Palo Alto, California, United States of America
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Many caterpillars in a montane rain forest in Ecuador are not classical herbivores. JOURNAL OF TROPICAL ECOLOGY 2015. [DOI: 10.1017/s0266467415000243] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Abstract:Lepidopteran caterpillars are typically classified as herbivorous insects. Other feeding associations have been known for a long time but are often neglected in the ecological literature. In samples from 194 shrubs belonging to 16 species of Piperaceae and Asteraceae, which were taken in a montane forest and succession habitats in southern Ecuador, caterpillar assemblages included an unexpectedly large fraction not feeding on the living biomass of their putative ‘host’. Feeding trials revealed them to instead feed on foliose lichens, dead leaves and epiphylls (lichen, algae, bryophytes). These ‘alternative feeders’ accounted for 22.5% of the whole dataset and up to 80% of the caterpillars on individual plant species. Densities of alternative feeders were very similar across shrub species within each plant family, but differed strongly between Asteraceae in succession and Piperaceae in forest habitats. Herbivore caterpillars showed the opposite pattern with strong differences between individual plant species, but overall similar densities on both plant families.
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Abstract
Understanding variation in resource specialization is important for progress on issues that include coevolution, community assembly, ecosystem processes, and the latitudinal gradient of species richness. Herbivorous insects are useful models for studying resource specialization, and the interaction between plants and herbivorous insects is one of the most common and consequential ecological associations on the planet. However, uncertainty persists regarding fundamental features of herbivore diet breadth, including its relationship to latitude and plant species richness. Here, we use a global dataset to investigate host range for over 7,500 insect herbivore species covering a wide taxonomic breadth and interacting with more than 2,000 species of plants in 165 families. We ask whether relatively specialized and generalized herbivores represent a dichotomy rather than a continuum from few to many host families and species attacked and whether diet breadth changes with increasing plant species richness toward the tropics. Across geographic regions and taxonomic subsets of the data, we find that the distribution of diet breadth is fit well by a discrete, truncated Pareto power law characterized by the predominance of specialized herbivores and a long, thin tail of more generalized species. Both the taxonomic and phylogenetic distributions of diet breadth shift globally with latitude, consistent with a higher frequency of specialized insects in tropical regions. We also find that more diverse lineages of plants support assemblages of relatively more specialized herbivores and that the global distribution of plant diversity contributes to but does not fully explain the latitudinal gradient in insect herbivore specialization.
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López-Carretero A, Díaz-Castelazo C, Boege K, Rico-Gray V. Evaluating the spatio-temporal factors that structure network parameters of plant-herbivore interactions. PLoS One 2014; 9:e110430. [PMID: 25340790 PMCID: PMC4207832 DOI: 10.1371/journal.pone.0110430] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2014] [Accepted: 09/22/2014] [Indexed: 11/19/2022] Open
Abstract
Despite the dynamic nature of ecological interactions, most studies on species networks offer static representations of their structure, constraining our understanding of the ecological mechanisms involved in their spatio-temporal stability. This is the first study to evaluate plant-herbivore interaction networks on a small spatio-temporal scale. Specifically, we simultaneously assessed the effect of host plant availability, habitat complexity and seasonality on the structure of plant-herbivore networks in a coastal tropical ecosystem. Our results revealed that changes in the host plant community resulting from seasonality and habitat structure are reflected not only in the herbivore community, but also in the emergent properties (network parameters) of the plant-herbivore interaction network such as connectance, selectiveness and modularity. Habitat conditions and periods that are most stressful favored the presence of less selective and susceptible herbivore species, resulting in increased connectance within networks. In contrast, the high degree of selectivennes (i.e. interaction specialization) and modularity of the networks under less stressful conditions was promoted by the diversification in resource use by herbivores. By analyzing networks at a small spatio-temporal scale we identified the ecological factors structuring this network such as habitat complexity and seasonality. Our research offers new evidence on the role of abiotic and biotic factors in the variation of the properties of species interaction networks.
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Affiliation(s)
| | | | - Karina Boege
- Instituto de Ecología, Universidad Nacional Autónoma de México, México D.F., México
| | - Víctor Rico-Gray
- Instituto de Neuroetología, Universidad Veracruzana, Xalapa, Veracruz, México
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Simons NK, Gossner MM, Lewinsohn TM, Boch S, Lange M, Müller J, Pašalić E, Socher SA, Türke M, Fischer M, Weisser WW. Resource-mediated indirect effects of grassland management on arthropod diversity. PLoS One 2014; 9:e107033. [PMID: 25188423 PMCID: PMC4154770 DOI: 10.1371/journal.pone.0107033] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2014] [Accepted: 07/07/2014] [Indexed: 11/18/2022] Open
Abstract
Intensive land use is a driving force for biodiversity decline in many ecosystems. In semi-natural grasslands, land-use activities such as mowing, grazing and fertilization affect the diversity of plants and arthropods, but the combined effects of different drivers and the chain of effects are largely unknown. In this study we used structural equation modelling to analyse how the arthropod communities in managed grasslands respond to land use and whether these responses are mediated through changes in resource diversity or resource quantity (biomass). Plants were considered resources for herbivores which themselves were considered resources for predators. Plant and arthropod (herbivores and predators) communities were sampled on 141 meadows, pastures and mown pastures within three regions in Germany in 2008 and 2009. Increasing land-use intensity generally increased plant biomass and decreased plant diversity, mainly through increasing fertilization. Herbivore diversity decreased together with plant diversity but showed no response to changes in plant biomass. Hence, land-use effects on herbivore diversity were mediated through resource diversity rather than quantity. Land-use effects on predator diversity were mediated by both herbivore diversity (resource diversity) and herbivore quantity (herbivore biomass), but indirect effects through resource quantity were stronger. Our findings highlight the importance of assessing both direct and indirect effects of land-use intensity and mode on different trophic levels. In addition to the overall effects, there were subtle differences between the different regions, pointing to the importance of regional land-use specificities. Our study underlines the commonly observed strong effect of grassland land use on biodiversity. It also highlights that mechanistic approaches help us to understand how different land-use modes affect biodiversity.
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Affiliation(s)
- Nadja K. Simons
- Terrestrial Ecology Research Group, Department of Ecology and Ecosystem Management, School of Life Sciences Weihenstephan, Technische Universität München, Freising, Germany
- * E-mail:
| | - Martin M. Gossner
- Terrestrial Ecology Research Group, Department of Ecology and Ecosystem Management, School of Life Sciences Weihenstephan, Technische Universität München, Freising, Germany
| | - Thomas M. Lewinsohn
- Department of Animal Biology, Institute of Biology, University of Campinas, Campinas, Sao Paulo, Brazil
| | - Steffen Boch
- Institute of Plant Sciences, University of Bern, Bern, Switzerland
| | - Markus Lange
- Max-Planck-Institute for Biogeochemistry, Jena, Germany
| | - Jörg Müller
- Institute of Biochemistry and Biology, University of Potsdam, Potsdam, Germany
| | - Esther Pašalić
- Terrestrial Ecology Research Group, Department of Ecology and Ecosystem Management, School of Life Sciences Weihenstephan, Technische Universität München, Freising, Germany
| | | | - Manfred Türke
- Terrestrial Ecology Research Group, Department of Ecology and Ecosystem Management, School of Life Sciences Weihenstephan, Technische Universität München, Freising, Germany
| | - Markus Fischer
- Institute of Plant Sciences, University of Bern, Bern, Switzerland
- Biodiversity and Climate Research Centre, Senckenberg Gesellschaft für Naturforschung, Frankfurt/Main, Germany
| | - Wolfgang W. Weisser
- Terrestrial Ecology Research Group, Department of Ecology and Ecosystem Management, School of Life Sciences Weihenstephan, Technische Universität München, Freising, Germany
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Jorge LR, Prado PI, Almeida-Neto M, Lewinsohn TM. An integrated framework to improve the concept of resource specialisation. Ecol Lett 2014; 17:1341-50. [PMID: 25168335 DOI: 10.1111/ele.12347] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2014] [Revised: 04/14/2014] [Accepted: 07/30/2014] [Indexed: 11/29/2022]
Abstract
Resource specialisation, although a fundamental component of ecological theory, is employed in disparate ways. Most definitions derive from simple counts of resource species. We build on recent advances in ecophylogenetics and null model analysis to propose a concept of specialisation that comprises affinities among resources as well as their co-occurrence with consumers. In the distance-based specialisation index (DSI), specialisation is measured as relatedness (phylogenetic or otherwise) of resources, scaled by the null expectation of random use of locally available resources. Thus, specialists use significantly clustered sets of resources, whereas generalists use over-dispersed resources. Intermediate species are classed as indiscriminate consumers. The effectiveness of this approach was assessed with differentially restricted null models, applied to a data set of 168 herbivorous insect species and their hosts. Incorporation of plant relatedness and relative abundance greatly improved specialisation measures compared to taxon counts or simpler null models, which overestimate the fraction of specialists, a problem compounded by insufficient sampling effort. This framework disambiguates the concept of specialisation with an explicit measure applicable to any mode of affinity among resource classes, and is also linked to ecological and evolutionary processes. This will enable a more rigorous deployment of ecological specialisation in empirical and theoretical studies.
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Affiliation(s)
- Leonardo R Jorge
- Departamento de Biologia Animal, Instituto de Biologia, Universidade Estadual de Campinas (Unicamp), Campinas, SP, 13083-970, Brazil
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