Bird–plant interactions and vulnerability to biological invasions

Chupp, Adam D.; Battaglia, Loretta L.

doi:10.1093/jpe/rtw020

Cited by 9 publications

(3 citation statements)

References 65 publications

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“…Although we expected that a higher cover of hogweeds will support the availability of food for insectivorous birds, we showed that the number of hogweeds was positively related to the abundance of ground/herb insectivores likely indicating increased food availability. It is known that in some situations, alien plants can be a source of additional food, for example for frugivores, especially under resource-limited conditions (Reichard et al 2001;Chupp and Battaglia 2016). Our research showed for the first time a similar phenomenon in the ground/herb insectivorous birds.…”

Section: Discussionsupporting

confidence: 68%

The impact of Sosnowsky’s Hogweed on feeding guilds of birds

Grzędzicka

Reif

2021

J Ornithol

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Plant invasions alter bird community composition worldwide, but the underlying mechanisms still require exploration. The investigation of feeding guild structure of bird communities can be informative in respect to the potential impact of invasion features on the availability of food for birds. For this purpose, we focused on determining the influence of the invasive Sosnowsky’s Hogweed Heracleum sosnowskyi on the abundance of birds from various feeding guilds. In spring and summer 2019, birds were counted three times on 52 pairs of sites (control + Heracleum) in southern Poland, at various stages of Sosnowsky’s Hogweed development (i.e. sprouting, full growth and flowering, all corresponding to respective bird counts). We have shown that the presence of invader negatively affected the abundance of birds from all feeding guilds. However, a closer examination of the invaded sites uncovered that responses of particular guilds differed in respect to development stages expressed by a set of characteristics of the invader. Ground and herb insectivores were more common on plots with a higher number of the invader, while the abundance of bush and tree insectivores was negatively correlated with hogweeds’ height. Granivores were not affected by the invader’s features, while the abundance of omnivores was negatively related to the number of flowering hogweeds. Besides showing the general negative impact of the invader on different feeding guilds, our research has shown that certain aspects of Sosnowsky’s Hogweed invasion may support or depress occurrence of different birds on invaded plots. Knowledge of these aspects may facilitate our capacity for coping with challenges the invasive plants put in front of bird conservationists.

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Section: Discussionsupporting

confidence: 68%

The impact of Sosnowsky’s Hogweed on feeding guilds of birds

Grzędzicka

Reif

2021

J Ornithol

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“…Sometimes, the disruption of plant–disperser mutualisms relies on more than one species, as in the case of the exotic forest pathogens causing laurel wilt disease in many native Lauraceae species from the USA. These species are responsible for the decline in native plant populations and the consequent disruption of the frugivorous interaction between birds and plants, facilitating the invasion of other exotic plants [ 48 ]. Other mechanisms include displacing or affecting dispersal behaviors and visitation rates of native dispersers [ 4 , 12 , 13 , 18 , 49 , 50 , 51 , 52 , 53 , 54 , 55 , 56 ], modifying patterns of habitat selection by seed dispersers [ 19 , 57 ], predation of native dispersers [ 58 ], competition for dispersal services by exotic plants [ 59 , 60 ], and reduction in seed dispersal network complexity [ 61 ].…”

Section: Resultsmentioning

confidence: 99%

Ecological Impacts of Exotic Species on Native Seed Dispersal Systems: A Systematic Review

Cordero

Gálvez

Fontúrbel

2023

Plants

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Exotic species are one of the main threats to biodiversity, leading to alterations in the structure and functioning of natural ecosystems. However, they can sometimes also provide ecological services, such as seed dispersal. Therefore, we assessed the ecological impacts of exotic species on native dispersal systems and the mechanisms underlying the disruption of mutualistic plant–disperser interactions. Exotic species negatively affect dispersal mutualisms by (i) altering dispersal behavior and visitation rates of native dispersers, (ii) predating native dispersers, (iii) transmitting forest pathogens, and (iv) predating seeds. Conversely, positive impacts include the dispersal of native plants, forest regeneration, and native habitat restoration via (i) increasing the visitation rates of frugivorous birds, (ii) facilitating the colonization and establishment of native forest trees, (iii) enhancing forest species seedling survival, and (iv) facilitating seed rain and seedling recruitment of early and late successional native plants. The reviewed studies provide similar results in some cases and opposite results in others, even within the same taxa. In almost all cases, exotic species cause negative impacts, although sometimes they are necessary to ensure native species’ persistence. Therefore, exotic species management requires a comprehensive understanding of their ecological roles, since the resulting effects rely on the complexity of native–exotic species interactions.

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“…Caution might be thus warranted when, such as in our case with Acacia saligna (see Table S2), positive co-occurrences are found between some birds and invasive plants. Although some mutualistic interactions between invasive and nativeeven endangered-species are reciprocally present (e.g., [60,61]), plant-bird interaction networks are generally impacted by the introduction of non-native species [17,62,63].…”

Section: Discussionmentioning

confidence: 99%

Investigating Plant–Bird Co-Occurrence Patterns in Mediterranean Wetlands: Can They Reveal Signals of Ecosystem Connectivity?

et al. 2022

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Interspecific biotic interaction is believed to be a fundamental phenomenon in ecology. However, despite the increasing efforts, interaction mechanisms are still not clearly understood. We compiled a database of 323 birds and 844 vascular plants in 30 wetlands from Sardinia. This was complemented with seed dispersal features and plant structures (suitability for nesting), and with site-level traits, such as wetland surface area, distance from the sea, percentage of open water, protection level, and number of human impacts. The percentage of non-random co-occurrences was then measured, and the relative importance of each trait in determining it was modelled. We found that non-random co-occurrences among sites decreased with the site extent and increase with the percentage of open water, bird zoochory was positively correlated with co-occurrences, nesting birds showed higher rates of co-occurrence than non-nesting birds, and plants with habits suitable for nesting displayed more co-occurrences than the rest of the plants. These results are a small contribution to the complex topic of species co-occurrence and connectivity within an ecosystem. Species co-occurrence is a promising but debatable approach that may provide insightful clues to species interactions within ecological systems.

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Bird–plant interactions and vulnerability to biological invasions

Cited by 9 publications

References 65 publications

The impact of Sosnowsky’s Hogweed on feeding guilds of birds

The impact of Sosnowsky’s Hogweed on feeding guilds of birds

Ecological Impacts of Exotic Species on Native Seed Dispersal Systems: A Systematic Review

Investigating Plant–Bird Co-Occurrence Patterns in Mediterranean Wetlands: Can They Reveal Signals of Ecosystem Connectivity?

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