Ladybird Beetle Diversity in Natural and Human-Modified Habitats in the San Cristóbal Island, Galapagos, Ecuador DOI Creative Commons
Emilia Peñaherrera-Romero, Ariel Guerrero-Campoverde, María P. Rueda-Rodríguez

et al.

Insects, Journal Year: 2024, Volume and Issue: 15(9), P. 725 - 725

Published: Sept. 20, 2024

This study investigates the species richness and distribution of ladybird beetles (Coccinellidae) across various habitats on San Cristóbal Island in Galápagos Archipelago, Ecuador. Through extensive field surveys, we catalogued nineteen species, including four previously known (two endemics, Psyllobora bisigma Scymnobius scalesius, two natives, Cycloneda sanguinea Tenuisvalvae bromelicola). We also identified nine possibly native reported for first time Galapagos islands this or correspond to voucher specimens island. collected three non-native species: Cheilomenes sexmaculata, Novius cardinalis, Paraneda guticollis. Three belonging genera Stethorus, Calloeneis, Delphastus remain undetermined, pending further taxonomic analyses. Our findings reveal a rich complex community with notable differences abundance habitat preference. Endemic were found be particularly scarce restricted mainly crops undergoing forest regeneration deciduous forests, emphasising their vulnerability specialised requirements. The emerged as most prevalent exhibiting broad ecological adaptability. Non-native like predominantly disturbed habitats, some showing early signs spreading into more natural environments, raising concerns about potential impact local biodiversity. These contribute valuable knowledge understanding Coccinellidae diversity highlight importance continued monitoring, face ongoing environmental change introduction species. underscores need targeted conservation efforts protect unique fragile ecosystems Archipelago.

Language: Английский

Arthropod-based biotic integrity indices: A novel tool for evaluating the ecological condition of native forests in the Azores archipelago DOI Creative Commons
Noëlline Tsafack, Sébastien Lhoumeau,

Alejandra Ros‐Prieto

et al.

Ecological Indicators, Journal Year: 2023, Volume and Issue: 154, P. 110592 - 110592

Published: July 1, 2023

Island ecosystems are experiencing a significant decline in biodiversity, with forest biodiversity being particularly affected by several erosion drivers. This alarming situation highlights the urgent need for conservation managers to develop more accurate and efficient tools assess monitor quality status of sites. To address this issue, our study focuses on development two biological integrity indices (IBI) that utilize arthropod communities as indicators measure In accordance studies showed stratification species diversity, we developed an IBI canopy stratum (IBI-Canopy) intermediate targeting understory (IBI-SLAM). We calibrated both seven parameters comparison purpose previous epigean IBI. Percentages endemic, native non-endemic introduced richness abundance were included indices. Diplopoda IBI-Canopy percentages Saprophagous IBI-SLAM. As expected endemic negatively related disturbance selected Surprisingly, positively disturbance. The limitations single measurements detecting all types pressure sources, proposes multi-measurement system provide comprehensive understanding overall conditions. Our accessible confirmed low preservation Flores compared Terceira Pico, consistent prior empirical studies. analyses also detect earlier than stratum. methodology has successfully been tailored unique found Azores forests. While it may not be suitable random sites, can serve valuable source inspiration arthropod-based IBIs other islands world which standardized exotic could obtained. assemblages mimicked is reflected differences expressed IBIs.

Language: Английский

Citations

11
Artificial intelligence for biodiversity: Exploring the potential of recurrent neural networks in forecasting arthropod dynamics based on time series DOI Creative Commons
Sébastien Lhoumeau, Joao Pinelo Silva, Paulo A. V. Borges

et al.

Ecological Indicators, Journal Year: 2025, Volume and Issue: 171, P. 113119 - 113119

Published: Feb. 1, 2025

Language: Английский

Citations

0
Best practices for long-term monitoring of island arthropods: insights from the Azores Islands DOI Creative Commons
Paulo A. V. Borges

Deleted Journal, Journal Year: 2025, Volume and Issue: 2(1)

Published: March 17, 2025

Language: Английский

Citations

0
Species traits may predict extinction risk of Azorean endemic arthropods DOI Creative Commons
Guilherme Oyarzabal, Pedro Cardoso, François Rigal

et al.

Insect Conservation and Diversity, Journal Year: 2025, Volume and Issue: unknown

Published: March 27, 2025

Abstract Oceanic islands, recognised for their isolation, high endemic species richness and unique evolutionary paths compared with continental counterparts, are extremely susceptible to anthropogenic activities. The fragmentation of island habitats disruption native ecosystems has increased the risk extinction many species, including arthropods. Extinction is not random, some traits may increase probability entering an trajectory. Studying alongside International Union Conservation Nature (IUCN) threat levels offer valuable insights into vulnerability inform targeted conservation strategies. Here, we aim test predictability IUCN categories status based on Azorean arthropods' functional traits: body size, trophic group vertical strata occupancy. We demonstrate that limited occupancy, particularly those restricted ground level, more vulnerable than inhabit forest canopy. Contrary our expectations, size did appear be direct predictors level. Overall, findings underscore previous ongoing effects human activities in ecosystems. Hence, emphasise need look at as future extinctions

Language: Английский

Citations

0
Monitoring arthropods under the scope of LIFE-SNAILS project: I - Santa Maria Island baseline data with implementation of the Index of Biotic Integrity DOI Creative Commons
Paulo A. V. Borges, Lucas Lamelas-López, Sébastien Lhoumeau

et al.

Biodiversity Data Journal, Journal Year: 2024, Volume and Issue: 12

Published: Feb. 23, 2024

The database we introduce is a pivotal component of the LIFE SNAILS project (Support and Naturalisation in Areas Importance for Land Snails). This initiative dedicated to safeguarding three endangered species terrestrial molluscs, specifically, two snails ( Oxychilus agostinhoi Martins 1981 Leptaxis minor Backhuys, 1975) semi-slug Plutonia angulosa (Morelet, 1860)), all which are single island endemics from Santa Maria Island face significant threats towards their populations. In this study, established comprehensive derived long-term arthropod monitoring campaign utilising SLAM (Sea, Land, Air, Malaise) traps. Although molluscs were not primary focus, our findings serve as credible proxy evaluating overall habitat quality endemic invertebrates, with arthropods serving principal indicators. From September December 2022, total 11 traps installed monitored monthly eleven sites mixed forests Island. Based on 33 available samples (11 x 3 sampling periods), recorded 118 taxa (of 94 identified at or subspecies level), belonging classes, 14 orders 62 families. taxa, 21 endemic, 31 native non-endemic, 32 introduced 10 indeterminate. We also provide additional information (Index Biotic Integrity), including general dominant composition. registered new records Island, bug Piezodorus lituratus (Fabricius, 1794) (Hemiptera, Pentatomidae), Azorean beetle Phloeosinus gillerforsi Bright, 1987 (Coleoptera, Curculionidae) exotic ant Hypoponera punctatissima (Roger, 1859) (Hymenoptera, Formicidae) one record Azores Archipelago, Cephennium validum Assing & Meybohm, 2021 Staphylinidae, Scydmaeninae). publication only contributes conservation highly threatened through an assessment quality, based communities description (e.g. vegetation), but provides updated inventory

Language: Английский

Citations

3
Monitoring arthropods under the scope of the LIFE-BEETLES project: I - Baseline data with implementation of the Index of Biotic Integrity DOI Creative Commons
Sébastien Lhoumeau, Noëlline Tsafack,

Sónia Manso

et al.

Biodiversity Data Journal, Journal Year: 2024, Volume and Issue: 12

Published: July 23, 2024

The urgent need for conservation efforts in response to the global biodiversity crisis is exemplified by initiatives, such as EU LIFE BEETLES project. This project aims preserve endangered arthropod species that are crucial ecosystem functionality, with a focus on endemic beetle Flores, Pico and Terceira Islands (Azores, Portugal):

Language: Английский

Citations

2
Arthropod traits as proxies for abundance trends in the Azorean Islands DOI Open Access
Guilherme Oyarzabal, Pedro Cardoso, François Rigal

et al.

Authorea (Authorea), Journal Year: 2024, Volume and Issue: unknown

Published: May 31, 2024

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

Language: Английский

Citations

1
Arthropod traits as proxies for abundance trends in the Azorean Islands DOI Creative Commons
Guilherme Oyarzabal, Pedro Cardoso, François Rigal

et al.

Ecography, Journal Year: 2024, Volume and Issue: 2024(12)

Published: Aug. 27, 2024

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

Language: Английский

Citations

1
Biological Integrity of Azorean Native Forests Is Better Measured in Cold Season DOI Creative Commons
Noëlline Tsafack, Sébastien Lhoumeau,

Alejandra Ros‐Prieto

et al.

Diversity, Journal Year: 2023, Volume and Issue: 15(12), P. 1189 - 1189

Published: Nov. 30, 2023

The Azorean archipelago, recognized as one of the world’s biodiversity hotspots, is home to a diverse and unique community arthropod species, highlighting notable degree endemism. However, native forests that support these species are facing significant degradation due habitat loss fragmentation. In this study, we aimed determine ideal season for measuring biological integrity forest sites using index (IBI) based on communities captured with Sea, Land, Air Malaise (SLAM) traps. Drawing more than thirty years research experience in forests, selected twelve reference sites, six representing preserved disturbed forest, compared how IBI values vary between seasons. exhibited consistent variations seasons indicating areas can be conducted at any time year without specific seasonal preference. contrast, differences were observed pristine winter combination spring data (cold semester) showing notably higher other semesters. This finding suggests best optimized cold seasons, while detection exotic impact most effective summer autumn. Consequently, if resources limited, monitoring efforts should concentrated obtain maximum minimum IBI, respectively. Additionally, our study optimal detect potentially invasive species.

Language: Английский

Citations

3
Artificial Intelligence for Biodiversity: Exploring the Potential of Recurrent Neural Networks in Forecasting Arthropod Dynamics Based on Time Series DOI
Sébastien Lhoumeau, Joao Pinelo Silva, Paulo A. V. Borges

et al.

Published: Jan. 1, 2024

Language: Английский

Citations

0