Ecological drivers of taxonomic, functional, and phylogenetic diversity of bryophytes in an oceanic island

Ecology and Evolution, Год журнала: 2024, Номер 14(7)

Опубликована: Июль 1, 2024

Abstract Montane oceanic islands possess unique geographic and ecological attributes, rendering them valuable for assessing patterns drivers of alpha beta taxonomic, functional, phylogenetic diversity along elevational gradients. Such comparisons facets can provide insights into the mechanisms governing community assembly on islands. Herein, we aimed to characterize bryophyte Madeira Island within across areas at varying elevations. We also assessed how these components relate anthropogenic factors. estimated compared using 80 plots 0.5 m × whole gradient island. compiled trait databases supplemented with our own observations. Phylogenetic information was sourced from Moss Liverwort Tree Life. To assess impact factors three facets, applied linear mixed‐effects models generalized dissimilarity alpha‐ beta‐diversity matrices, respectively. All exhibited strong correlations both mosses liverworts, indicating a substantial congruence when are analyzed separately. The groups categorized by growth form demonstrated contrasting patterns, aligning their distinctive requirements. While mid‐elevation peak emerged as common pattern diversity, often displayed opposite trend. Although relative influence environmental varied depending facet grouping considered, found that bryophytes more influenced climatic predominant type vegetation than In current context global change, results should be interpreted caution, but they point resilience survive in relatively well‐preserved natural microhabitats landscapes. this study Island, investigated strongly

Язык: Английский

---

Anthropogenic disturbance has altered the habitat of two Azorean endemic coastal plants

BMC Ecology and Evolution, Год журнала: 2024, Номер 24(1)

Опубликована: Авг. 20, 2024

Abstract Background Anthropogenic threats are causing alteration of coastal areas worldwide. Most the biodiversity is endangered, taking a particular toll on island ecosystems, like Azores. To better understand biotic and abiotic factors constraining distribution conservation status two endemic plants, Azorina vidalii (Campanulaceae) Lotus azoricus (Fabaceae), we performed global survey plant communities in archipelago, also covering environmental descriptors, natural anthropogenic threats. Moreover, revised their IUCN estimated population fractions within protected areas. Results Non-indigenous plants were commonly found plots with or without target endemics, contributing to absence well-defined communities. Nonetheless, indigenous taxa occurred at L. . With larger area occurrence, A. ecological niche differed from that , latter being restricted dry rocky sea cliffs, mostly Santa Maria Island. Besides presence invasive signs habitat destruction, trampling grazing, threats, such as erosion, observed. Conclusions Occurrence data indicated an endangered for both species, although this would change critically when using smaller-sized occurrence cells. Both species threatened since very narrow vegetation belt, strongly limited by influence human pressure, frequent plants. While focusing our study allowed broader view impact disturbance Azorean

Язык: Английский

---

A new small carder bee species from the eastern Canary Islands (Hymenoptera, Megachilidae, Anthidiini)

Journal of Hymenoptera Research, Год журнала: 2023, Номер 96, С. 983 - 1015

Опубликована: Ноя. 22, 2023

Recent field surveys in the eastern Canary Islands (Spain), followed by contributions of new occurrence records through citizen science platform iNaturalist.com and social media photo repository Flickr.com have revealed presence an overlooked small carder bee species (genus Pseudoanthidium Friese (Megachilidae: Anthidiini)) on islands Lanzarote Fuerteventura. Here, we combined morphology, DNA barcodes (mitochondrial cytochrome c oxidase subunit I, COI ) ecological data (distribution, altitudinal ranges environmental niche classification) to describe this as (Pseudoanthidium) jacobii sp. nov. We provide illustrated description along with diagnostic morphological characters separate it from P. (P.) canariense (Mavromoustakis, 1954), only other congeneric known neighbouring La Gomera, Tenerife Gran Canaria which is separated a genetic distance 2.7%. also evaluated extent shared space among two species, our results show significant difference elevation range well very (less than 1%) overlap between modelled climatic that . Given extremely restricted geographic distribution fragile isolated nature habitat host plants island endemic assign IUCN conservation status “EN” (endangered) discuss avenues for future research ecology wild bees regions.

Язык: Английский

---

Road Impact on Plant Colonization in the Arid Timanfaya National Park

Plants, Год журнала: 2023, Номер 12(20), С. 3568 - 3568

Опубликована: Окт. 13, 2023

Roads have the potential to alter local environmental conditions, such as availability of water and nutrients, rapidly create suitable habitats for establishment both native non-native plant species, transforming ecosystems. This is a challenge in Timanfaya National Park Los Volcanes Natural on Lanzarote Island, protected areas that experienced primary succession after recent volcanic eruptions. In arid ecosystems, changes abiotic conditions along roadsides might facilitate colonization growth. We analyzed effect roads road type species composition richness at spatiotemporal scale. Vascular were systematically recorded three distances from edge sides, across fourteen zones wet dry seasons, years. Results showed there slight differences depending distance edge, well zones. Species was also determined by interaction position, zones, season, being higher edge. Furthermore, with traffic intensity presence species. study highlights importance awareness about impacts enhancing capacity while facilitating entry invasive ones. Good management practices regarding infrastructures natural are crucial conservation their unique flora, landscapes, processes.

Язык: Английский

---

Temporal variability in native plant composition clouds impact of increasing non-native richness along elevational gradients in Tenerife

Perspectives in Plant Ecology Evolution and Systematics, Год журнала: 2024, Номер unknown, С. 125845 - 125845

Опубликована: Дек. 1, 2024

Язык: Английский

---

Biogeographic context mediates multifaceted diversity-productivity relationships in island and mainland forests

bioRxiv (Cold Spring Harbor Laboratory), Год журнала: 2023, Номер unknown

Опубликована: Июль 19, 2023

Abstract Aim Growing evidence suggests that impacts of biodiversity loss on ecosystem functioning and nature’s contributions to people are usually negative, yet the magnitude direction these can be variable across naturally-assembled ecosystems. A potential driver variation in diversity-productivity relationships is biogeographical context, which may alter via processes acting size composition species pool like dispersal limitation, environmental filtering, speciation, invasibility. However, extent between facets forest productivity shaped by biogeographic context remains uncertain. Here, we examine effects taxonomic, phylogenetic, functional tree diversity aboveground climatically similar forests islands mainland. Location Continental insular Spain. Time period 1997-2018. Major taxa studied Trees. Methods Using plot data from a national inventory, assessed influence using linear models structural equation models, while accounting for conditions, non-native species, number trees. Results We find drier conditions lead decrease trees both island mainland forests. In forests, increased directly their phylogenetic diversity. Main conclusions Our results suggest multifaceted diversity, capturing evolutionary history, contributes elucidating could not detected otherwise taxonomic alone. By filling empty niches fundamentally altering islands.

Язык: Английский

---