Pollination services mapping and economic valuation from insect communities: a case study in the Azores (Terceira Island)

Picanço, Ana; Gil, Artur; Rigal, François; Borges, Paulo A. V.

doi:10.3897/natureconservation.18.11523

Cited by 23 publications

(24 citation statements)

References 71 publications

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“…This attracted many pollinating bees, butterflies, and hoverflies to invaded areas, even when plots had relatively low flower densities. These results are consistent with previous studies that revealed when the invasive plant is a pollination generalist (native) nectarivores can be tempted to pollinate the invader (Bartomeus et al, 2008; Picanço, Gil, Rigal, & Borges, 2017; Traveset & Richardson, 2006). While we anticipated A. leptopus to disrupt obligate plant–herbivore interactions and thus cause a reduction in herbivore abundance (e.g., Hartley, Rogers, & Siemann, 2010), we observed an unexpected increase in herbivore abundance.…”

Section: Discussionsupporting

confidence: 93%

Disentangling the effects of plant species invasion and urban development on arthropod community composition

Jesse

Molleman

Franken

et al. 2020

Global Change Biology

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Urban development and species invasion are two major global threats to biodiversity.These threats often co-occur, as developed areas are more prone to species invasion. However, few empirical studies have tested if both factors affect biodiversity in similar ways. Here we study the individual and combined effects of urban development and plant invasion on the composition of arthropod communities. We assessed 36 paired invaded and non-invaded sample plots, invaded by the plant Antigonon leptopus, with half of these pairs located in natural and the other half in developed land-use types on the Caribbean island of St. Eustatius. We used several taxonomic and functional variables to describe community composition and diversity. Our results show that both urban development and A. leptopus invasion affected community composition, albeit in different ways. Development significantly increased species richness and exponential Shannon diversity, while invasion had no effect on these variables. However, invasion significantly increased arthropod abundance and caused biotic homogenization. Specifically, uninvaded arthropod communities were distinctly different in species composition between developed and natural sites, while they became undistinguishable after A. leptopus invasion. Moreover, functional variables were significantly affected by species invasion, but not by urban development. Invaded communities had higher community-weighted mean body size and the feeding guild composition of invaded arthropod communities was characterized by the exceptional numbers of nectarivores, herbivores, and detritivores. With the exception of species richness and exponential Shannon diversity, invasion influenced four out of six response variables to a greater degree than urban development did.Hence, we can conclude that species invasion is not just a passenger of urban development but also a driver of change.

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Section: Discussionsupporting

confidence: 93%

Disentangling the effects of plant species invasion and urban development on arthropod community composition

Jesse

Molleman

Franken

et al. 2020

Global Change Biology

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“…Twenty out of the 34 studied species are known from at least four islands and many of them are widely distributed within each island. These common species include all eight Crambidae, which are important pollinators of the Azorean native forest (Picanço et al 2017). …”

Section: Discussionmentioning

confidence: 99%

Species conservation profile of moths (Insecta, Lepidoptera) from Azores, Portugal

Borges¹,

Santa-Rita²,

Nunes³

et al. 2018

BDJ

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BackgroundThe few remnants of Azorean native forests harbour a unique set of endemic moths (Insecta, Lepidoptera), some of them under severe long term threats due to small sized habitats or climatic changes. In this contribution, we present the IUCN Red List profiles of 34 endemic moths to the Azorean archipelago, including species belonging to two diverse families: Noctuidae (11 species) and Crambidae (eight species). The objective of this paper is to assess all endemic Azorean moth species and advise on possible future research and conservation actions critical for the long-trem survival of the most endangered species.New informationMost species have a large distribution (i.e. 58% occur in at least four islands), very large extent of occurrence (EOO) and a relatively large area of occupancy (AOO). Only nine species are single-island endemics, three of them from Flores, three from São Miguel and one from Pico, São Jorge and Faial. Most of the species also experience continuing decline in habitat quality, number of locations and subpopulations caused by the ongoing threat from pasture intensification, forestry, invasive plant species and future climatic changes. The lack of new records may indicate that one of the species previously named is extinct (Eupithecia ogilviata). Therefore, we suggest as future conservation actions: (1) a long-term species monitoring plan and (2) control of invasive species.

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“…Additionally, there is still limited information on the condition of pollinators and the related ecosystem services they provide in oceanic islands, although recent research has demonstrated that insect pollinators play a key role in agricultural production [ 29 ]. Previous studies have shown that oceanic insular ecosystems usually support less complex pollination networks with lower numbers of pollinator species, and that these mostly comprised generalist species [ 30 , 31 , 32 ].…”

Section: Introductionmentioning

confidence: 99%

Limited Effect of Management on Apple Pollination: A Case Study from an Oceanic Island

Pardo

Lopes

Fierro

et al. 2020

Insects

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Intensive agricultural practices leading to habitat degradation represent a major threat to pollinators. Diverse management practices are expected to influence wild pollinator abundance and richness on farms, although their effect in perennial crops is still unclear. In this study, we assessed the impact of management on apple (Malus domestica) pollination on an oceanic island, by comparing conventional (with and without herbicide application) and organic apple orchards. Pollinator visitation and pan trap surveys were carried out in six apple orchards in Terceira Island (Azores) and the landscape composition surrounding orchards was characterized. We also quantified fruit set, seed set and apple weight. We found no significant effect of management on insect visitation rates, whereas there was a negative association with increasing surrounding agricultural land. In contrast, management had an effect on species abundance, richness and diversity at the orchard level. Conventional orchards without herbicides showed higher abundance than the rest, but lower richness and diversity than conventional orchards with herbicides. Management had an effect on fruit set, but not on seed set or fruit weight. Our results suggest that management alone is insufficient for the overall improvement of apple pollination on an oceanic island, while landscape composition may play a relevant role.

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Pollination services mapping and economic valuation from insect communities: a case study in the Azores (Terceira Island)

Cited by 23 publications

References 71 publications

Disentangling the effects of plant species invasion and urban development on arthropod community composition

Disentangling the effects of plant species invasion and urban development on arthropod community composition

Species conservation profile of moths (Insecta, Lepidoptera) from Azores, Portugal

Limited Effect of Management on Apple Pollination: A Case Study from an Oceanic Island

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