Interactive effects of climate and land use on pollinator diversity differ among taxa and scales

Ganuza, Cristina; Redlich, Sarah; Uhler, Johannes; Tobisch, Cynthia; Rojas‐Botero, Sandra; Peters, Marcell K.; Zhang, Jie; Benjamin, Caryl; Englmeier, Jana; Ewald, Jörg; Fricke, Ute; Haensel, Maria; Kollmann, Johannes; Riebl, Rebekka; Uphus, Lars; Müller, Jörg; Steffan‐Dewenter, Ingolf

doi:10.1126/sciadv.abm9359

Cited by 44 publications

(37 citation statements)

References 74 publications

(114 reference statements)

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“…S 7 ), resulting in a weaker link of insect trends with regional land-use changes as compared to climate changes. Yet, at the local scale (e.g., on a given patch), land-use change and intensification are known to be important drivers of local insect diversity 17 with consequences for insect population trends 6 , which, when resulting in a large-scale increase of land-use intensity, clearly negatively affect biodiversity at regional scales 45 . Thus, land-use changes, which might have been locally considerable (Supplementary Fig.…”

Section: Resultsmentioning

confidence: 99%

“…4 and Supplementary Fig. S6), showing the crucial role of climate change in shaping insect communities at a regional scale 17 . As such, we provide strong evidence that in recent decades, climate changes have replaced regional land-use changes as the main driving force of large-scale insect distribution changes in Switzerland, a finding that most likely also hold for other (temperate) regions 41 .…”

Section: The Role Of Climate and Land-use Changesmentioning

confidence: 99%

“…Recent spatial analyses suggest that insect communities may be shaped by both additive and interactive effects of climate, land use and changes therein [16][17][18] . Such analyses based on space-for-time substitution provide valuable insights into insect declines in the absence of timeseries data 19 , but to understand past developments of insect populations, time series are key 20 .…”

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confidence: 99%

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Different roles of concurring climate and regional land-use changes in past 40 years’ insect trends

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Climate and land-use changes are main drivers of insect declines, but their combined effects have not yet been quantified over large spatiotemporal scales. We analysed changes in the distribution (mean occupancy of squares) of 390 insect species (butterflies, grasshoppers, dragonflies), using 1.45 million records from across bioclimatic gradients of Switzerland between 1980 and 2020. We found no overall decline, but strong increases and decreases in the distributions of different species. For species that showed strongest increases (25% quantile), the average proportion of occupied squares increased in 40 years by 0.128 (95% credible interval: 0.123–0.132), which equals an average increase in mean occupancy of 71.3% (95% CI: 67.4–75.1%) relative to their 40-year mean occupancy. For species that showed strongest declines (25% quantile), the average proportion decreased by 0.0660 (95% CI: 0.0613–0.0709), equalling an average decrease in mean occupancy of 58.3% (95% CI: 52.2–64.4%). Decreases were strongest for narrow-ranged, specialised, and cold-adapted species. Short-term distribution changes were associated to both climate changes and regional land-use changes. Moreover, interactive effects between climate and regional land-use changes confirm that the various drivers of global change can have even greater impacts on biodiversity in combination than alone. In contrast, 40-year distribution changes were not clearly related to regional land-use changes, potentially reflecting mixed changes in local land use after 1980. Climate warming however was strongly linked to 40-year changes, indicating its key role in driving insect trends of temperate regions in recent decades.

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Section: Resultsmentioning

confidence: 99%

Section: The Role Of Climate and Land-use Changesmentioning

confidence: 99%

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confidence: 99%

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Different roles of concurring climate and regional land-use changes in past 40 years’ insect trends

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“…There is even evidence that rising carbon dioxide levels can directly alter pollen protein content via effects on plant metabolism (Ziska et al 2016). Similarly, land use processes such as urbanization and agricultural intensification, can drive shifts in floral resource availability in time, space, and functional traits via their effects on the distribution, composition, and local climate of plant species (Baude et al 2016;Cabon et al 2022;Ganuza et al 2022).…”

Section: Floral Resource Structure As Effectmentioning

confidence: 99%

Pollinator competition and the structure of floral resources

Sponsler

Iverson²,

Stefan-Dewenter

2022

Preprint

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The mutualism between plants and pollinators is built upon the trophic ecology of flowers and florivores. Yet the ecology of flowers-as-food is left implicit in most studies of plant-pollinator ecology, and it has been largely neglected in mainstream trophic ecology. This deficit is especially evident in an emerging issue of basic and applied significance: competition between pollinators for floral resources. In this synthesis, we start by exploring the notion of floral resource limitation upon which most studies concerning competition between pollinators are tacitly predicated. Both theoretical and empirical lines of evidence indicate that floral resource limitation must be understood as a complex ecological contingency; the question is not whether but when, where, and in what regions of floral trait space resources are limiting. Based on this premise, we propose a framework for understanding floral resource availability in terms of temporal, spatial, and functional structure. While this framework is conceptually intuitive, it is empirically and analytically demanding. We review existing methods for measuring and summarizing the multi-dimensional structure of floral resources, highlight their strengths and weakness, and identify opportunities for future methods development. We then discuss the causal relationships linking floral resource structure to species coexistence, plant-pollinator community dynamics, and exogenous drivers like climate, land use, and episodic disturbances. In its role as both cause and effect, floral resource structure mediates the relationship between behavioral ecology, landscape ecology, and coexistence theory with respect to flowers and florivores. Establishing floral resource structure as an object of study and application will both shed light on basic questions of community ecology and guide management decisions concerning contentious issues such as the compatibility of apiculture with wild pollinator conservation and the appropriate use of floral enhancements in agri-environment schemes.

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“…No contexto de mudanças climáticas, as perturbações provocadas pelas ações antrópicas podem ter um impacto sobre polinizadores de forma progressiva, levando a extinções locais e/ou mudanças comportamentais dos agentes polinizadores, podendo causar o desaparecimento de plantas que dependem deles para a polinização, dispersão de sementes ou proteção contra herbivoria (Leal e Andersen 2014: Brown e Oliveira 2014Tabarelli et al, 2018;Theodorou et al, 2020;Suni et al, 2021;Lage-Pinto et al, 2021;Ganuza et al, 2022;Rollin et al, 2022;Stevenson et al, 2022).…”

Section: Introductionunclassified

Síndrome de Polinização das Espécies Arbóreas e Arbustivas do Campus do Pici - Fortaleza, Ceará, Brasil

Sousa

Oliveira

Cavalcante

et al. 2022

Rev. Bras. Geog. Fis.

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O Campus do Pici localizado na zona urbana de Fortaleza, Ceará, apresenta uma diversidade de espécies vegetais. diante disso, o presente estudo objetivou identificar através das características florais, as síndromes de polinização das espécies vegetais arbóreas e arbustivas que ocorrem no referido Campus. As informações sobre as espécies foram obtidas através de consulta e análise dos espécimes depositadas do herbário EAC e bibliografias especializadas. A partir destas informações, foi elaborada uma lista de espécies das famílias botânicas, suas características morfológicas e síndrome de polinização. Foram listadas 110 espécies distribuídas em 80 gêneros e 28 famílias, com destaque para Fabaceae (34,54%), seguida de Euphorbiaceae (6,36%) e Rubiaceae (5,45%), correspondendo a 46,35% do total de táxons. A síndrome de melitofilia foi a mais frequente, principalmente entre as espécies de Fabaceae, demonstrando a importância dessa família para a manutenção das abelhas em locais antropizados como o Campus do Pici.Palavras-chave: Agentes polinizadores, Melitofilia, Plantas nativas, Biologia floral, Nordeste do Brasil. Pollination Syndrome of Tree and Shrub Species of Campus do Pici - Fortaleza, Ceará, BrazilA B S T R A C TThe Campus do Pici, located in the urban area of Fortaleza, - Ceará state, has a diversity of plant species. Therefore, the present study aimed to identify, through the floral characteristics, the pollination syndromes of the tree and shrub plant species that occur in the aforementioned Campus. Information about the species was obtained through consultation and analysis of specimens deposited in the EAC herbarium and specialized bibliographies. From this information, a list of species of the botanical families, their morphological characteristics and pollination syndrome was elaborated. A total of 110 species distributed in 80 genera and 28 families were listed, with emphasis on Fabaceae (34.54%), followed by Euphorbiaceae (6.36%) and Rubiaceae (5.45%), corresponding to 46.35% of the total number of táxons. Melitophilia syndrome was the most frequent, mainly among Fabaceae species, demonstrating the importance of this family for the maintenance of bees in anthropized places such as Campus do Pici.Key words: Pollinating agents, Melitophilia, Native plants, Floral biology, Northeastern Brazil.

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Interactive effects of climate and land use on pollinator diversity differ among taxa and scales

Cited by 44 publications

References 74 publications

Different roles of concurring climate and regional land-use changes in past 40 years’ insect trends

Different roles of concurring climate and regional land-use changes in past 40 years’ insect trends

Pollinator competition and the structure of floral resources

Síndrome de Polinização das Espécies Arbóreas e Arbustivas do Campus do Pici - Fortaleza, Ceará, Brasil

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