Distribution and pollination services of wild bees and hoverflies along an altitudinal gradient in mountain hay meadows

Baumann, Kevin; Keune, Julia; Wolters, Volkmar; Jauker, Frank

doi:10.1002/ece3.7924

Cited by 9 publications

(7 citation statements)

References 34 publications

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“…In the Swiss Alps, Beck et al [ 96 ] found diverse patterns in moths in different seasons: a monotonic decline in spring and autumn and a unimodal peak at middle elevation in summer. At specific conditions, additional patterns have been found; for example, at low altitude gradients (400–700 m), Baumann et al [ 97 ] found richness and abundance of wild bees and abundance (but not richness) of hoverflies increasing with altitude. The same pattern (increasing diversity following altitude increase) has been detected also in Formicidae in arid conditions [ 98 ].…”

Section: Discussionmentioning

confidence: 99%

Different Distribution Patterns of Hoverflies (Diptera: Syrphidae) and Bees (Hymenoptera: Anthophila) Along Altitudinal Gradients in Dolomiti Bellunesi National Park (Italy)

Sommaggio

Zanotelli

Vettorazzo³

et al. 2022

Insects

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Hoverflies (Diptera: Syrphidae) and bees (Hymenoptera: Anthophila) are two key taxa for plant pollination. In the present research, the altitudinal distribution of these taxa was studied along two gradients (elevation range: 780–2130 m) in the Dolomiti Bellunesi National Park (Northeastern Italy). Pan traps were used as a sampling device to collect both hoverflies and bees. Other than altitude, the effect of landscape complexity and plant diversity were considered as potential predictors of hoverfly and bee richness and abundance along the two gradients. A total of 68 species of hoverflies and 67 of bees were collected during one sampling year, confirming the efficacy of pan traps as a sampling device to study these taxa. Altitude was the main variable affecting both hoverfly and bee distribution. The two taxa show different distribution patterns: hoverflies have a unimodal distribution (richness and abundance) with peak at middle altitude (1500 m), while bees have a monotonic decline (richness and abundance) with increasing altitude. Both hoverfly and bee populations change with the increasing altitude, but the change in hoverflies is more pronounced than in bees. Species turnover dominates the β-diversity both for hoverflies and bees; therefore, the hoverfly and bee communities at higher altitudes are not subsamples of species at lower altitude but are characterized by different species. This poses important conservation consequences. Some rare species, typical of an alpine habitat were recorded; the present research represents important baseline data to plan a monitoring scheme aimed at evaluating the effect of climate change on pollinators in these fragile habitats.

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Section: Discussionmentioning

confidence: 99%

Different Distribution Patterns of Hoverflies (Diptera: Syrphidae) and Bees (Hymenoptera: Anthophila) Along Altitudinal Gradients in Dolomiti Bellunesi National Park (Italy)

Sommaggio

Zanotelli

Vettorazzo³

et al. 2022

Insects

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“…Also, in natural forests, surface microrelief contributes to increasing water retention and decreasing runoff (Valtera & Schaetzl, 2017). Mountain areas are also known to host a high diversity of pollinators (e.g., Naeem et al, 2020;Baumann et al, 2021), essential to agricultural production and the function of rural communities.…”

Section: Regulating Ecosystem Servicesmentioning

confidence: 99%

Servicios ecosistémicos en áreas de montaña: beneficios y amenazas

et al. 2022

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Las áreas de montaña tienen un impacto importante en las dinámicas climáticas y son una de las fuentes de agua con condiciones más críticas. Las montañas fueron claves en la evolución histórica del ser humano y suministraron servicios ecosistémicos (SE) bióticos y abióticos esenciales para la vida humana. Este artículo de perspectiva estudiará la importancia de las montañas para el suministro de SE y los impactos de los diferentes factores de cambio, a saber, cambios en el hábitat, el cambio climático, la sobreexplotación, la contaminación y las especies invasoras. Las zonas de montaña tienen una gran capacidad para suministrar un número importante de recursos reguladores (regulación del clima global y local, regulación de la calidad del aire, regulación de los riesgos naturales, polinización), de aprovisionamiento (cultivos, ganado, alimentos y pesca silvestre, biomasa para energía y madera, energía renovable de agua dulce -hidroeléctrica, eólica, solar y geotérmica- y recursos minerales) y culturales (ocio y turismo, estética e inspiración del paisaje, patrimonio cultural y diversidad cultural y sistemas de conocimiento). Sin embargo, los cambios impuestos por la modificación del hábitat, el cambio climático, la sobreexplotación, la contaminación y las especies invasoras pueden aumentar los intercambios entre los SE y desencadenar la degradación del medio ambiente. En general, es necesario equilibrar la utilización de los SE de montaña y reducir los efectos de los distintos factores de cambio.

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“…Previous studies have found various factors that can influence orchid distribution across a landscape, including pollination specificity and mycorrhizal association [31]. As both factors are also found to correlate with altitude [53][54][55][56], we used this as proxy variables within the SDMs. Alongside altitudinal data, we also retrieved climatic variables relating to precipitation and temperature from the World Clim dataset (worldclim.org, 2020).…”

Section: Species Distribution Models (Sdms) Of Conservation Priority Speciesmentioning

confidence: 99%

Exploring Effective Conservation of Charismatic Flora: Orchids in Armenia as a Case Study

2021

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Plants are the bedrock of life on Earth but are increasingly threatened with extinction. The most cost-effective way of conserving plant diversity is through Protected Areas (PAs). However, the locality, size, and management of PAs are crucial for effectively maintaining diversity and have been criticized as currently inadequate. Using Armenia as our study site and orchids as our study taxa, we sought to (1) identify spatial patterns of orchid diversity hotspots and corresponding PA network sites; (2) examine if the current PA network is effective at capturing orchid species richness and diversity and (3) explore the relationship between the range of area suitability of species and level of protection. We used data collected from herbarium, field visits and GBIF occurrence records. Using freely available mapping software, we created heatmaps of observations and species richness. We compared PA sites based on the number of species (species richness) and diversity (Shannon–Weiner Index). Species range was developed using the MaxEnt model and a correlation analysis was performed against the proportion of the range within PA. We found that 57% of PA sites have a representation of at least one species of orchid, but some threatened species are not presented within any PA site. The Tavush and Syunik province not only held the highest species richness (>10 species), but the PA network within also held high orchid diversity (2.5 diversity index value for Dilijan National Park). We did not find a significant relationship between the range of area suitability for orchids and protection; however, all our target species had less than 30% of their range under protection. Our study highlights important challenges related to the limitations of available data, and we discuss these implications towards effective conservation outcomes for orchids for the region.

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Distribution and pollination services of wild bees and hoverflies along an altitudinal gradient in mountain hay meadows

Abstract: This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

Cited by 9 publications

References 34 publications

Different Distribution Patterns of Hoverflies (Diptera: Syrphidae) and Bees (Hymenoptera: Anthophila) Along Altitudinal Gradients in Dolomiti Bellunesi National Park (Italy)

Different Distribution Patterns of Hoverflies (Diptera: Syrphidae) and Bees (Hymenoptera: Anthophila) Along Altitudinal Gradients in Dolomiti Bellunesi National Park (Italy)

Servicios ecosistémicos en áreas de montaña: beneficios y amenazas

Exploring Effective Conservation of Charismatic Flora: Orchids in Armenia as a Case Study

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