Phylogenomics and phylogeographic model testing using convolutional neural networks reveal a history of recent admixture in the Canarian Kleinia neriifolia DOI Creative Commons
Mario Rincón Barrado, Manolo F. Perez, Tamara Villaverde

et al.

Molecular Ecology, Journal Year: 2024, Volume and Issue: 33(21)

Published: Oct. 19, 2024

Multiple-island endemics (MIE) are considered ideal natural subjects to study patterns of island colonization that involve recent population-level genetic processes. Kleinia neriifolia is a Canarian MIE widespread across the archipelago, which exhibits close phylogenetic relationship with species in northwest Africa and at other side Sahara Desert. Here, we used target sequencing plastid skimming (Hyb-Seq), dense sampling K. neriifolia, representatives its African-southern Arabian relatives infer relationships divergence times population levels. Using techniques machine learning (convolutional neural networks [CNNs]), reconstructed phylogeographic admixture based on multilocus SNP nuclear dataset. Phylogenomic analysis dataset identifies northwestern African anteuphorbium as sister starting early Pliocene. Divergence from clade, comprising Horn southern Arabia, dated arid Messinian period, lending support climatic vicariance origin Rand Flora. Phylogeographic model testing CNNs supports an initial central Tenerife followed by eastward westward migration resulted observed east/west split. Subsequent extinctions linked aridification events, recolonization Tenerife, proposed explain eastern Canary Islands. We demonstrate SNPs can be discriminate among complex scenarios colonization.

Language: Английский

Geographic and Biological Drivers Shape Anthropogenic Extinctions in the Macaronesian Vascular Flora DOI
Raúl Orihuela‐Rivero, Javier Morente‐López, J. Alfredo Reyes‐Betancort

et al.

Global Change Biology, Journal Year: 2025, Volume and Issue: 31(2)

Published: Feb. 1, 2025

ABSTRACT Whether species extinctions have accelerated during the Anthropocene and extent to which certain are more susceptible extinction due their ecological preferences intrinsic biological traits among most pressing questions in conservation biology. Assessing rates is, however, challenging, as best exemplified by phenomenon of ‘ dark ’: loss that disappear before they even formally described. These issues particularly problematic oceanic islands, where exhibit high endemism unique but also vulnerable extinction. Here, we document plant since Linnaeus' Species Plantarum Macaronesia, a biogeographic region comprised five hyperdiverse archipelagos, identify key drivers behind these extinctions. We compiled 168 records covering 126 taxa, identifying 13 global 155 local events. Significantly higher were observed compared expected background rate. uncovered differentiated patterns along altitudinal gradients, highlighting recent coastal hotspot linked socioeconomic changes Macaronesian archipelagos from 1960s onwards. Key factors influencing include island age, elevation, introduced herbivorous mammals, human population size. Trait‐based analyses across floras Azores Canary Islands revealed endemicity, pollination vertebrates, nitrogen‐fixing capacity, woodiness, zoochory consistently tended increase risk. Our findings emphasize critical role geography traits, alongside anthropogenic impacts, shaping dynamics on islands. Enhancing our knowledge life‐history within is crucial for accurately predicting mitigating future risks, underscoring urgent need comprehensive biodiversity assessments ecosystems.

Language: Английский

Citations

1
Cloud Forest Tree Growth Responses to Climate and Drought Vary by Island and Species in the Macaronesian Region DOI Open Access
María A. García‐López, Ana I. García‐Cervigón, Rui B. Elias

et al.

Journal of Biogeography, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 23, 2025

ABSTRACT Aim Macaronesian cloud forests are insular ecosystems subjected to local environmental variability, but the responses of their tree species climate variations have never been studied. Our aim was assess how variation in conditions associated with geographical location several islands three archipelagos affects growth patterns and drought‐resistance dominant trees. Location Azores, Madeira Canary archipelagos. Portugal Spain. Taxon Lauraceae, Aquifoliaceae, Clethraceae, Oleaceae, Rosaceae Cupressaceae. Methods We assessed radial response 10 forest from 18 populations on 5 along a gradient Macaronesia. quantified influence climatic variables North Atlantic Oscillation (NAO) East Pattern (EA) circulation drought events affected resistance, recovery resilience indices estimated for these species. Results Trees same island showed similar patterns, particularly marked hydric stress. In Islands, mainly determined by water availability, winter NAO negatively droughts caused abrupt narrow growth‐ring width. effect EA positive, as it increased temperature relative humidity promoted growth. wetter environments demonstrated higher resistance drought, while trees drier sites faster after events. Main Conclusions Homogeneous among suggested that is mostly conditions, which more important than phenotypic traits. The variability availability latitudinal throughout region influenced both drought.

Language: Английский

Citations

0
Commentary: Sharks in Cabo Verde, Canarias, Madeira and Azores islands: species richness, conservation status and anthropogenic pressures DOI Creative Commons
Sérgio P. Ávila

Frontiers in Marine Science, Journal Year: 2025, Volume and Issue: 12

Published: April 24, 2025

Language: Английский

Citations

0
Comparative Patterns of Sex Expression and Sex Ratios in Island and Continental Bryophyte Populations DOI Creative Commons
Anabela Martins, Jairo Patiño, Manuela Sim‐Sim

et al.

Plants, Journal Year: 2025, Volume and Issue: 14(4), P. 573 - 573

Published: Feb. 13, 2025

Reproductive biology patterns are crucial for understanding the dynamics and evolution of plants. This is particularly relevant in bryophytes, where sex expression reproductive success can vary significantly with environmental conditions. Islands, their isolated diverse environments, provide natural laboratories to explore these dynamics. In this study, we investigate expression, phenotypic ratio, sporophyte production one moss (Exsertotheca intermedia) three liverwort species (Frullania polysticta, Frullania teneriffae, Porella canariensis) across entire distribution range. Depending on species, geographic range includes Canary Madeira, Azores, Iberian Peninsula, British Isles, Faroe Islands. For non-Macaronesian endemic (F. P. higher levels males were found Macaronesian archipelagos. leafy liverworts, females appear be correlated lower temperatures precipitation levels, while seem associated relatively levels. demonstrated that bryophyte populations from Macaronesia exhibited compared continental counterparts, suggesting distinct conditions islands play a role shaping patterns.

Language: Английский

Citations

0
Assessing the Potential Risk of Invasion of the Neophyte Pluchea ovalis (Pers.) DC. (Asteraceae) in the Canarian Archipelago Using an Ensemble of Species Distribution Modelling DOI Creative Commons
Juan José García-Alvarado,

Miguel Pestano-González,

Cristina González-Montelongo

et al.

Diversity, Journal Year: 2025, Volume and Issue: 17(3), P. 195 - 195

Published: March 10, 2025

Invasive species represent a significant threat to biodiversity and ecosystem conservation, with their impacts often amplified in island ecosystems. Species distribution models (SDMs) can infer the potential habitat throughout life of an organism are considered valuable tool for predicting risk expansion invasive plants animals. In our approach, we used ensemble four presence–absence (GLM, GAM, Random Forest, BART) calibrated only data collected Tenerife, best representation species, suitability Pluchea ovalis (Pers.) DC. (Asteraceae). Subsequently, transferred ensembled model rest Canarian Island archipelago. Our results show that under near-present conditions, suitable areas coastal mid-elevations south slope sectors Tenerife Gran Islands, as well vast portion westernmost drier islands, always coinciding ravines highly disturbed addition, forecasted different climate change conditions (SSP126, SSP370, SSP585), showing how its habitability would increase worst scenarios. Both contexts favor gained by places where they currently not present, revealing new islands.

Language: Английский

Citations

0
Mapping marine debris hotspots on Boa Vista Island, Cabo Verde DOI Creative Commons
Diana Sousa‐Guedes, Neftalí Sillero,

Mara Abu-Raya

et al.

Marine Pollution Bulletin, Journal Year: 2025, Volume and Issue: 214, P. 117823 - 117823

Published: March 18, 2025

Language: Английский

Citations

0
Biodiversity insights from BioBlitz Surveys on Terceira Island, Azores DOI Creative Commons
Paulo A. V. Borges, Jagoba Malumbres‐Olarte, Rosalina Gabriel

et al.

Biodiversity Data Journal, Journal Year: 2025, Volume and Issue: 13

Published: May 7, 2025

This manuscript is the first scientific publication of project “BioBlitz Azores". The was launched in 2019 and had a second event 2023 under scope FCT-MACRISK project, surveying historic public garden "Jardim Duque da Terceira", historical centre Angra do Heroísmo, Terceira Island (Azores, Portugal). In addition to contributing directly knowledge Azorean biota, BioBlitz Azores aims engage non-scientific community - including volunteers, amateur naturalists, students, teachers, families other visitors foster sense raise awareness about biodiversity its conservation. Under two events, list taxa Terceira" (Terceira, Azores, Portugal) updated presently includes 72 lichen species, 55 vascular plant 96 arthropod 14 bird species three freshwater vertebrate species. realm lichens, are new records for Portugal Macaronesia, one record nine Island. academic 11 12 survey arthropods yielded an inventory encompassing total taxa, with 78 these identified or subspecies level; amongst endemic, 32 native, but not indeterminate origin 42 introduced. Notably, single specimen rare endemic spider, Savigniorrhipis acoreensis Wunderlich, 1992 observed time at this low elevation (garden elevation: 29-60 m a.s.l.). typically found canopies trees native forests mid- high elevations (500-1000 a.s.l.) presence suggests source-sink dynamic extremely dispersive between anthropogenic habitats. Regarding plants, 54 were recorded garden, comprising 49 introduced ornamental Amongst birds, registered, seven subspecies, four taxa. Three during survey, all which exotic that have been garden.

Language: Английский

Citations

0
1139. Euphorbia regis‐jubae Webb & Berthel. DOI

Julián Molero Briones,

Trinidad Arcos Pereira, María Dolores García de Paso Carrasco

et al.

Curtis s Botanical Magazine, Journal Year: 2025, Volume and Issue: unknown

Published: May 8, 2025

Summary Euphorbia regis‐jubae Webb & Berthel., a Macaronesian species endemic to the Canary Islands and Atlantic lowland slopes of southwestern Morocco Western Sahara is illustrated. A review its phylogeny, conservation status, ecology, phytochemistry, ethnobotany, nomenclature, botanical illustrations, taxonomy provided.

Language: Английский

Citations

0
Phylogenetic and phylogeographic evidence for the colonization success of the diplochorous Astydamia latifolia across the Canary Islands DOI Creative Commons
Alberto J. Coello, Pablo Vargas, Aitor Alameda‐Martín

et al.

Ecology and Evolution, Journal Year: 2024, Volume and Issue: 14(7)

Published: July 1, 2024

is the only species of genus

Language: Английский

Citations

0
Phylogenomics and phylogeographic model testing using convolutional neural networks reveal a history of recent admixture in the Canarian Kleinia neriifolia DOI Creative Commons
Mario Rincón Barrado, Manolo F. Perez, Tamara Villaverde

et al.

Molecular Ecology, Journal Year: 2024, Volume and Issue: 33(21)

Published: Oct. 19, 2024

Multiple-island endemics (MIE) are considered ideal natural subjects to study patterns of island colonization that involve recent population-level genetic processes. Kleinia neriifolia is a Canarian MIE widespread across the archipelago, which exhibits close phylogenetic relationship with species in northwest Africa and at other side Sahara Desert. Here, we used target sequencing plastid skimming (Hyb-Seq), dense sampling K. neriifolia, representatives its African-southern Arabian relatives infer relationships divergence times population levels. Using techniques machine learning (convolutional neural networks [CNNs]), reconstructed phylogeographic admixture based on multilocus SNP nuclear dataset. Phylogenomic analysis dataset identifies northwestern African anteuphorbium as sister starting early Pliocene. Divergence from clade, comprising Horn southern Arabia, dated arid Messinian period, lending support climatic vicariance origin Rand Flora. Phylogeographic model testing CNNs supports an initial central Tenerife followed by eastward westward migration resulted observed east/west split. Subsequent extinctions linked aridification events, recolonization Tenerife, proposed explain eastern Canary Islands. We demonstrate SNPs can be discriminate among complex scenarios colonization.

Language: Английский

Citations

0