Contrasting patterns for endangered flora revealed by 60-year land-use change analysis DOI Creative Commons

Sandra Navas,

Rut Sánchez de Dios, Felipe Domínguez Lozano

et al.

Global Ecology and Conservation, Journal Year: 2024, Volume and Issue: 50, P. e02810 - e02810

Published: Jan. 17, 2024

Land-use change analysis is widely accepted as a biodiversity conservation tool. However, it has seldom been used in the context of endangered plants. Our aim to accurately quantify changes land cover over last 60 years selection 58 populations 43 Spanish threatened Consequently, we explain how these correlate with major trends such human demography, ecological gradients or spatial distribution plant threats. A semi-automatic classification methodology identify land-cover by comparing aerial photographs from 1956 2019 an established radius around field plots. Secondly, information plots and external databases was analyzed using GIS layers PCA statistics. Land use have extensive diverse. Tree shrubland area increased 717.8 ha (an increase 1.19 times compared initial situation) affecting most samples, whereas urban 168.8 (at rate 49 values), although concentrated certain populations. define two groups flora: first group related high densities, low elevation settings situ protection, while second cessation pressure, protected establishment forest cover. The forested could be counterproductive. Urban land-use present more urgent issue, especially for those plants coastal areas. Finally, herbivore density richness compromise growing at

Language: Английский

Timberline Patterns and Dynamics Depend on Forest Type, Regional Climate, and Topography in the Cantabrian Mountains (Spain) DOI
J. Barbier, José V. Roces‐Díaz, Borja Jiménez‐Alfaro

et al.

Journal of Vegetation Science, Journal Year: 2025, Volume and Issue: 36(1)

Published: Jan. 1, 2025

ABSTRACT Questions Forest timberlines are globally influenced by climatic and anthropogenic factors, with regional differences in species composition, spatial patterns, temporal dynamics. We studied mountain forests a climatically heterogeneous region to analyze (I) the distribution structure of timberline across local topographic gradients, (II) dynamics over last 70 years their drivers. Location Cantabrian Mountains, Northwestern Spain. Methods used vegetation maps describing habitat distributions high thematic resolution characterize montane forest types forming natural timberlines. assessed elevation for each type fitted generalized linear models main environmental drivers at scale. also examined current historical aerial imagery explore changes since 1950s mixed evaluate driving factors. Results The varied from 1700 2000 m, highest elevations found Betula celtiberica Quercus orocantabrica forests. Regional variation was primarily mean annual temperature solar radiation, secondarily distance roads. detected upward shifts dominated (10.9 ± 11.6 m), petraea (7.7 8.5 Fagus sylvatica on acid (6.4 9.2 m) non‐acid (3.0 3.9 soils, while largely remained unchanged. Beyond type, were mainly explained northness, eastness, slope. Conclusions Our study indicates that within‐regional patterns is determined its relationships climate topography. provide evidence continentality–oceanity gradient determining middle latitudes. Although higher reached under continental conditions, stronger oceanic conditions may be dispersal abilities species.

Language: Английский

Citations

0
Dispersal constrains the biotic connectivity of mountain assemblages DOI
Rocío Peña, José Ramón Obeso, Paola Laiolo

et al.

Journal of Biogeography, Journal Year: 2024, Volume and Issue: 51(7), P. 1230 - 1243

Published: Feb. 23, 2024

Abstract Aim Climate warming is shifting the bioclimatic optima of species towards mountaintops, but ability organisms to track these changes also depends on their dispersal skills. Here, we assessed role over niche‐driven processes in connecting assemblages along mountain slopes and between massifs. Location Cantabrian Mountains, Spain. Taxon Birds (Animalia; Aves) Lichens (Fungi; Ascomycota, Basidiomycota). Methods We examined change with elevation community‐level traits that are proxies (wing shape birds type dispersing propagule lichens) ecological niche (micro‐habitat, substrate, foraging features). then permutate composition within sites massifs create models distribution constrained by processes. These were compared observed disclose relative contribution niche‐based biotic interchange (vertical connectivity) isolated summits (horizontal connectivity). Results Both bird lichen communities formed enhance at high elevations. groups showed similarities elevational patterns diversity, which dropped Dispersal was far dominant assembly mechanism both taxa. Pairwise community comparisons among belts weak vertical connectivity, predominant limitations barriers extremes gradient. Among massifs, horizontal connectivity higher than those from lower Main Conclusion found be systems, even taxa potential. Highland had low functional diversity mobility. This permits and, potentially, colonization other as climate warms. Our framework combining occurrence‐permutation improve understanding mechanisms gradients points limitations, especially low‐middle

Language: Английский

Citations

3
What is the role of fire in rewilding? Synthesising peer-reviewed literature into four thematic discourses DOI Creative Commons
Francisco Navarro-Rosales,

Chloë Strevens,

Immaculada Oliveras Menor

et al.

Perspectives in Ecology and Conservation, Journal Year: 2025, Volume and Issue: unknown

Published: March 1, 2025

Language: Английский

Citations

0
Contrasting patterns for endangered flora revealed by 60-year land-use change analysis DOI Creative Commons

Sandra Navas,

Rut Sánchez de Dios, Felipe Domínguez Lozano

et al.

Global Ecology and Conservation, Journal Year: 2024, Volume and Issue: 50, P. e02810 - e02810

Published: Jan. 17, 2024

Land-use change analysis is widely accepted as a biodiversity conservation tool. However, it has seldom been used in the context of endangered plants. Our aim to accurately quantify changes land cover over last 60 years selection 58 populations 43 Spanish threatened Consequently, we explain how these correlate with major trends such human demography, ecological gradients or spatial distribution plant threats. A semi-automatic classification methodology identify land-cover by comparing aerial photographs from 1956 2019 an established radius around field plots. Secondly, information plots and external databases was analyzed using GIS layers PCA statistics. Land use have extensive diverse. Tree shrubland area increased 717.8 ha (an increase 1.19 times compared initial situation) affecting most samples, whereas urban 168.8 (at rate 49 values), although concentrated certain populations. define two groups flora: first group related high densities, low elevation settings situ protection, while second cessation pressure, protected establishment forest cover. The forested could be counterproductive. Urban land-use present more urgent issue, especially for those plants coastal areas. Finally, herbivore density richness compromise growing at

Language: Английский

Citations

1