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

Molecular Delimitation of Evolutionary Significant Units Reveals Hidden Geographic Drivers of Extinction Risk Within Island Arthropods DOI Creative Commons
Eduardo Jiménez‐García, Daniel Suárez, Carmelo Andújar

et al.

Diversity and Distributions, Journal Year: 2025, Volume and Issue: 31(1)

Published: Jan. 1, 2025

ABSTRACT Aim Globally, arthropod biodiversity is under threat, with increased risk of species‐level extinctions, and this threat particularly acute on oceanic islands. A fundamental first step towards understanding extinction to understand genetic connectivity among the constituent populations a species. Our aim develop implement protocol characterise island within species reveal otherwise hidden range size drivers extinction. Location Canary Islands, Spain. Methods We based mtDNA sequence data for delimitation evolutionary significant units (ESUs) evaluate beetle spider distributed across multiple Results results that more than half analysed are comprised two or ESUs. also find low dispersal ability was predictor ESUs Coleoptera, but no difference Araneae. Main Conclusions Most consistent early stage differentiation incipient speciation, some exceeding conservative interspecific threshold, thus indicative cryptic suggest extending our approach integration other traits may provide refined predictive framework risks

Language: Английский

Citations

1
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 DOI Creative Commons
Sébastien Lhoumeau, Paulo A. V. Borges

Diversity, Journal Year: 2023, Volume and Issue: 15(6), P. 753 - 753

Published: June 8, 2023

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

Language: Английский

Citations

11
Comparative Mitogenomes and Phylogenetic Analyses of Coccinellidae (Coleoptera: Coccinelloidea) DOI Creative Commons
Qiaoqiao Liu,

Pingzhou Zhu,

Shiwen Xu

et al.

Ecology and Evolution, Journal Year: 2025, Volume and Issue: 15(3)

Published: March 1, 2025

Coccinellidae (ladybird beetles) comprises around 6900 described species with a worldwide distribution and exhibits broad trophic diversity. Complete mitochondrial genomes (mitogenomes) are valuable resources in many research fields, such as genomics, population genetics, molecular evolution, phylogenetics. Here we sequenced report the complete mitogenome of Calvia chinensis, Micraspis discolor, Harmonia eucharis, Oenopia kirbyi. By comparing 36 mitogenomes published GenBank, found that long noncoding region (LNCR) between trnI trnQ is present Chilocorini Coccinellini, size LNCR positively correlated their size. The variable number tandem repeat (VNTR) was detected chinensis kirbyi, indicating may be associated transcriptional regulation mitogenome. Heterogeneity base composition encountered among Coccinellidae, especially Noviini some Epilachnini which lead to unstable phylogenetic topologies. Phylogenetic relationships have been reconstructed by maximum likelihood Bayesian inferences based on two mitogenomic datasets, PCG_rRNA (all 13 PCGs rRNAs) PCG12_rRNA third codon position excluded rRNAs). Our results close subfamily tribe classification system reported previous studies suggest analysis dataset more sensitive avoiding false grouping unrelated taxa similar reconstruction phylogeny.

Language: Английский

Citations

0
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
Environmental heterogeneity, rather than stability, explains spider assemblage differences between ecosystems DOI Creative Commons
Daniel Suárez, Paula Arribas, Amrita Srivathsan

et al.

Ecography, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 24, 2024

The open ecosystem (e.g. grasslands, prairies, shrublands) tends to be ecologically less stable than closed one (i.e. forests) and encompassess higher spatial heterogeneity in terms of environmental diversity. Such differences are expected differentially constrain the diversity structure communities that inhabit each them, but identifying specific processes driving contrasting biodiversity patterns between systems is challenging. In order understand how variability might spider assemblages, both within ecosystems, we implement a high throughput multiplex barcode sequencing approach generate dataset for 8585 specimens representing 168 species, across Canary Islands. Combining these with sequences from same islands, show species richness, beta diversity, proportions rare proportionately lower numbers endemic ecosystem. We furthermore assess if habitat stability major drivers such by assessing genetic structuring influence bioclimatic variables. Our results point rather as driver ecosystems.

Language: Английский

Citations

1
Island spider origins show complex vertical stratification patterns in Macaronesia DOI Creative Commons
Ricardo Costa, Pedro Cardoso, François Rigal

et al.

Insect Conservation and Diversity, Journal Year: 2023, Volume and Issue: 16(6), P. 886 - 895

Published: Sept. 8, 2023

Abstract Spiders are among the most diverse and yet threatened groups of arthropods in Macaronesia. Found habitat types, they occupy vertical gradient native forests from ground to canopy level. We hypothesize that their distribution is influenced by colonization origin. As introduced species should arrive using shipping containers similar means, mostly lower levels gradient, with potential negative effects on indigenous epigean fauna. were sampled arboreal microhabitats (maximum height varying between 2 4 m) 45 sites across five islands belonging three archipelagos. The mean range stratification obtained for each captured species. These values then compared different origins at Macaronesian archipelagic levels. Native non‐endemic found significantly higher strata than both endemic Likewise, non‐endemics had a larger range. patterns largely replicated archipelagos, although there exceptions. Overall, do not seem occur Macaronesia (at least studied range) but be vertically restricted settings exception Madeira.

Language: Английский

Citations

3
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