Edge effects constrain endemic but not introduced arthropod species in a pristine forest on Terceira (Azores, Portugal)

Tsafack, Noelline; Pozsgai, Gábor; Boieiro, Mário; Ros‐Prieto, Alejandra; Nunes, Rui; Ferreira, María Teresa; Borges, Paulo A. V.

doi:10.1016/j.foreco.2022.120646

Cited by 7 publications

(4 citation statements)

References 54 publications

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“…The finding that the arthropod assemblage was dominated by endemic species, and no net decline in this assemblage over time, indicated that the forest ecosystem was relatively stable and able to support these species. This result is consistent with several other studies carried out in recent years [5,[63][64][65][66][67]. This is a very positive signal for the conservation status of this habitat.…”

Section: Dynamics Of Endemic Arthropods Reflect the Stability Of Terc...supporting

confidence: 93%

Assessing the Impact of Insect Decline in Islands: Exploring the Diversity and Community Patterns of Indigenous and Non-Indigenous Arthropods in the Azores Native Forest over 10 Years

Lhoumeau

Borges

2023

Diversity

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The ongoing decline of insect populations highlight the need for long-term ecological monitoring. As part of the “SLAM—Long Term Ecological Study of the Impacts of Climate Change on the Natural Forests of Azores” project, we investigated changes in arthropod diversity and community structure over a ten-year period (2012–2022) in the native forest of the island of Terceira (Azores). Focused on two arthropod assemblages (indigenous and non-indigenous species) monitored with SLAM traps, we asked if there was a distinguishable pattern in the diversity and structure of the studied arthropod subsets in a pristine island native forest. Species richness remained relatively constant. Endemic arthropods dominated and remained stable over time, indicating the forest’s ecological stability. In contrast, the assemblage of native non-endemic arthropods underwent changes, including increased hyperdominance and decreased biomass. The introduced arthropod assemblage showed more erratic dynamics driven by species turnover. Results suggested that temporal variation in each subset may be due to different ecological processes and that niche filtering may limit the establishment and spread of introduced arthropods. This research contributes to our understanding of the temporal dynamics of arthropods in native island forests and highlights the need for ongoing conservation efforts to protect these fragile ecosystems.

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Section: Dynamics Of Endemic Arthropods Reflect the Stability Of Terc...supporting

confidence: 93%

Assessing the Impact of Insect Decline in Islands: Exploring the Diversity and Community Patterns of Indigenous and Non-Indigenous Arthropods in the Azores Native Forest over 10 Years

Lhoumeau

Borges

2023

Diversity

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“…For the Sensitivity Analysis, we used the BALA dataset excluding Pico island (hereafter BALA without Pico), the BALA dataset excluding Terceira island (hereafter BALA without Terceira), and the BALA dataset excluding Pico and Terceira islands (hereafter BALA without Pico and Terceira). Since the native forest is not equally preserved across all Azores islands, we tested the removal of Pico and Terceira islands, which were the most preserved native forests throughout the archipelago (Tsafack et al 2023a) (Supplementary Table 1).…”

Section: Data Preparationmentioning

confidence: 99%

Arthropod traits as proxies for abundance trends in the Azorean Islands

Oyarzabal,

Cardoso,

Rigal

et al. 2024

Preprint

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Human activities drive ecological transformation, impacting island ecosystems from species diversity to ecological traits, mainly through habitat degradation and invasive species. Using two unique long-term datasets we aim to evaluate whether species traits (body size, trophic level, dispersal capacity and habitat occupancy) can predict temporal variations in the abundance of endemic, native non-endemic and exotic arthropods in the Azores Islands. We found that body size is crucial to predict arthropods abundance trends. Small-bodied herbivorous arthropods showed a decrease in abundance, while large-bodied indigenous arthropods increased in abundance, mainly in well-preserved areas. Also, large-bodied exotic arthropods increased in abundance across the entire archipelago. Moreover, endemic canopy dwellers increased in abundance, while endemic ground-dwellers decreased in abundance. Simultaneously, exotic arthropods showed the opposite result, increasing abundance in the ground while decreasing abundance in the canopy. Finally, habitat influenced both endemic and exotic spider abundance trends. Endemic spiders that occupy solely natural habitats experienced a decline in abundance, while exotic spiders in the same habitats increased in abundance. Our study underscores the significance of arthropod species traits in predicting abundance changes in island ecosystems over time, as well as the importance of monitoring species communities. Conservation efforts must extend beyond endangered species to protect non-threatened ones, given the increased extinction risk faced by even common species on islands. Monitoring and restoration programs are essential for preserving island ecosystems and safeguarding endemic arthropod populations.

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“…Hal ini sesuai dengan penelitian yang dilakukan Budiaman dkk. [17] bahwa terjadi penurunan populasi semut yang signifikan akibat penyaradan kayu oleh manusia di hutan alam produksi Kalimantan Tengah.…”

Section: Metode Penelitianunclassified

Ants Density of Odontomachus sp. and Its Ecological Role in Kendari City Green Open Space

Melvi Amalia,

Chairunnas

2024

B. SAINSTEK

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The degradation of environmental quality has become a global problem today. One way to address this is by providing green open spaces that help maintain environmental quality. Kendari city has a number of green open spaces (RTH) including, RTH in Baruga sub-district, Kendari mayor's office area and in Nanga-nanga botanical garden of Kendari city. This study aims to determine the density and ecological role of ants (Odontomachus sp.) in green open spaces in Kendari city. The method used in this study was hand sorting using ring samples with a diameter of 20 cm and a height of 15 cm in a plot measuring 25 m x 25 m consisting of 25 sampling points with a distance of 5 m per point. Data analysis was carried out by calculating the density at each research location, namely Baruga green space, mayor's park and Nanga-nanga botanical garden. The results showed that the highest density of ants (Odontomachus sp.) was found in the mayor's park with 16 ind/m2. The ecological role of ants (Odontomachus sp.) in Kendari city green open space is an important role in bioturbation and natural predators of soil fauna such as termites and earthworms.

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Edge effects constrain endemic but not introduced arthropod species in a pristine forest on Terceira (Azores, Portugal)

Cited by 7 publications

References 54 publications

Assessing the Impact of Insect Decline in Islands: Exploring the Diversity and Community Patterns of Indigenous and Non-Indigenous Arthropods in the Azores Native Forest over 10 Years

Assessing the Impact of Insect Decline in Islands: Exploring the Diversity and Community Patterns of Indigenous and Non-Indigenous Arthropods in the Azores Native Forest over 10 Years

Arthropod traits as proxies for abundance trends in the Azorean Islands

Ants Density of Odontomachus sp. and Its Ecological Role in Kendari City Green Open Space

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