Effects of climate change on the distribution of plant species and plant functional strategies on the Canary Islands

Diversity and Distributions, Journal Year: 2023, Volume and Issue: 29(9), P. 1157 - 1171

Published: June 23, 2023

Abstract Aim Oceanic islands possess unique floras with high proportions of endemic species. Island are expected to be severely affected by changing climatic conditions as species on have limited distribution ranges and small population sizes face the constraints insularity track their niches. We aimed assess how ongoing climate change affects range oceanic island plants, identifying particular conservation concern. Location Canary Islands, Spain. Methods combined occurrence data from single‐island endemic, archipelago nonendemic native plant Islands current future conditions. Bayesian Additive Regression Trees were used effect distributions; 71% ( n = 502 species) had models deemed good enough. To further functional strategies, we collected woodiness succulence. Results Single‐island projected lose a greater proportion climatically suitable area (x ̃ −0.36) than endemics −0.28) or −0.26), especially Lanzarote Fuerteventura, which experience less annual precipitation in future. Moreover, herbaceous gain more insular woody endemics. By contrast, found that succulent natives area. Main Conclusions While all importance, emphasise not characterised strategies associated water use efficiency. Our results particularly critical for other constituted such vast diversity Islands.

Language: Английский

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Scale‐dependent variation in leaf functional traits clarifies mechanisms of invasion

Ecography, Journal Year: 2025, Volume and Issue: unknown

Published: April 1, 2025

Comparing the functional traits of co‐occurring native and invasive plant species can offer insight regarding mechanisms invasion. Previous studies have failed to reach a consensus, indicating that extent trait differences between invasives might depend on environmental context spatial grain analysis. Here we evaluate scale‐dependency native–invader comparisons within Hawaiian Archipelago, globally important region high endemicity invasibility. We evaluated (e.g. gas exchange, leaf nutrient concentration, specific area) locally regionally (i.e. across islands) found while are more resource acquisitive at regional scale, highly idiosyncratic localized scales, varying both in direction magnitude islands. Our findings clarify how region‐wide may fail characterize interactions happening local thereby misleading or obscuring underlying

Language: Английский

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Insular biomes

Elsevier eBooks, Journal Year: 2025, Volume and Issue: unknown, P. 121 - 138

Published: Jan. 1, 2025

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Primary succession and plant functional traits on an oceanic island

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

Published: April 15, 2025

Abstract The discipline of functional island biogeography and studies on plant ecological strategies shaping assemblages have emerged only recently. Due to volcanic activity, primary succession is an important natural process driving ecosystem dynamics oceanic islands. However, our knowledge about traits in explaining the mechanism these islands characterized by impoverished disharmonic, but endemic‐rich floras, limited. We investigated distribution plants with respect nine related resource use, reproduction, growth as well their overall diversity during using a chronosequence 10 lava flows La Palma, Canary Islands. analysed changes single age community‐weighted trait means applied ordination techniques evaluate composition. Based theory, we tested several hypotheses for along successional gradient. also role endemic introduced structuring communities. Both single‐trait compositional approach revealed that composition displaying core leaf economics dispersal ability shifted substrate showing change from acquisitive conservative anemochory zoochory These shifts were entirely driven shrubs, while other forms contributed increase species richness little vegetation structure. Introduced almost absent trajectories. Functional dispersion increased whereas turnover was constant low succession. Synthesis . Our system reflects directional governed selection environmental conditions acquisitive‐conservative capacity early stages followed gradual modification environment expansion niche space linked divergence later stages. Major occurred five hundred years after eruptions indicating this dry very slow. dominance shrubs lack at all highlight importance evolutionary processes disturbances like volcanism archipelago.

Language: Английский

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Non-native vegetation encroachment drives trophic turnover in island nematodes

Biodiversity and Conservation, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 9, 2025

Abstract Nematodes are important components of terrestrial ecosystems. There is currently limited understanding how soil nematode communities altered by non-native vegetation encroachment. The spatial turnover was studied on Ascension Island in the South Atlantic: an isolated and degraded volcanic island sparse native vegetation. Many plants were introduced mid-1800’s, shrubs have more recently spread across lowlands. Ascension’s elevation gradient represented a unique space-for-time proxy for colonisation relatively barren landscape. collected at 0, 200, 400, 600 800 m elevations along three transects their community composition linked to Landsat-derived cover moisture over 2000–2023 period. Although taxonomic independent, both abundance richness increased with elevation. moist densely-vegetated mountain top dominated plant-root parasites, less dense mid-elevations omnivores, dry sparsely-vegetated lowlands fungivores, littoral habitat predators. Landsat analysis predicted that relative root parasitic nematodes 23% spreading 24 years. While may be resultant solely historic species introductions, trophic spatially structured likely follows encroachment closely. Root rapidly vegetation, especially oceanic islands. such could become unanticipated hinderance restoration invaded – potentially requiring management long after cleared.

Language: Английский

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Island Plant Species Distributions Contracted at the Cooler Edge Compared to Mainland

Ecology Letters, Journal Year: 2025, Volume and Issue: 28(4)

Published: April 1, 2025

ABSTRACT Continental islands have long been used as ecological models for understanding species assembly dynamics in isolated habitat fragments. But competition or colonisation constraints might be different to mainland populations, manifesting expanded contracted ranges across a geographic distribution of comparison population range. Here, we demonstrate that plants on coastal do not experience release due lack competition, but rather range at the cool edge cross‐continental dataset 843 small spanning contrasting environments fringing Australian coast. We found their averaged 2.2°C warmer mean annual temperature, about 4–500 km nearer equator. The tendency colonise suggests may struggle track niche poleward climate shifts over fragments mainland.

Language: Английский

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Closely related aliens lead to greater extinction risk

Biological Conservation, Journal Year: 2023, Volume and Issue: 284, P. 110148 - 110148

Published: June 15, 2023

Language: Английский

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On the brink of explosion? Identifying the source and potential spread of introduced Zosterops white-eyes in North America

Biological Invasions, Journal Year: 2024, Volume and Issue: 26(5), P. 1615 - 1639

Published: March 2, 2024

Language: Английский

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Alien range size, habitat breadth, origin location, and domestication of alien species matter to their impact risks

Integrative Zoology, Journal Year: 2024, Volume and Issue: unknown

Published: May 17, 2024

Abstract Invasive alien species are a major driver of biodiversity loss. Currently, the process biological invasions is experiencing constant acceleration, foreshadowing future increase in threat posed by invasive to global biodiversity. Therefore, it necessary assess impact risks and related factors. Here, we constructed dataset negative environmental events evaluate species. We collected information on 1071 established terrestrial vertebrates then gathered impacts for 108 those Generalized linear mixed‐effects model phylogenetic generalized least‐squares regression were used examine characteristic (including life‐history traits, characteristics distribution, introduction event characteristics) correlates species’ at scale (mammals, birds, reptiles amphibians). Our results showed that total 3158 reported harmful across 71 countries worldwide. Factors associated with varied slightly among taxa, but range size, habitat breadth, origin location, domestication significantly correlated risks. study aims identify high‐impact facilitate urgent assessment protect local ecological environment

Language: Английский

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

BMC Ecology and Evolution, Journal Year: 2024, Volume and Issue: 24(1)

Published: Aug. 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

Language: Английский

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