UDTR — Radar mondial des droits de la Nature

Conservation value of disturbed and secondary forests for ferns and lycophytes along an elevational gradient in Mexico

Identification

Clé publique

doi:10.1111/avsc.12318

Auteurs

César Isidro Carvajal Hernández · Thorsten Krömer · Juan Carlos López‐Acosta · Jorge Antonio Gómez‐Díaz · Michael R. Kessler

Année déclarée

2017

Langue déclarée

en

Type source

article

Première détection

2026-11-09T19:17:04.143148+00:00

Dernière observation des métadonnées

2026-11-09T19:17:04.143148+00:00

Dernière vérification HTTP

Non effectuée

Institutions déclarées par la source

Universidad Veracruzana · University of Göttingen · University of Zurich

Résumé documentaire — langue originale

Abstract Questions How do species richness and composition of fern assemblages change with elevation and, within elevational belts, in differently impacted forest habitats? Is there a relationship between fern assemblages and microclimate, both along gradients of elevation and disturbance? Which species are most sensitive to habitat disturbance and microclimatic changes? Location From sea level close to the Gulf of Mexico 81 km away in a direct line on the eastern slopes of the Cofre de Perote at 3500 m, central Veracruz, Mexico. Methods We studied the richness and composition of fern assemblages in 120 study plots at eight elevations from 20–3500 m in three forest types: natural forest (NF), disturbed forest (DF) subjected to timber extraction and grazing, and secondary forest (SF) regrown after total clearance 15–20 yr ago. In addition, we measured microclimatic conditions in the three forest types at five elevations over a year. Results Fern richness peaked in humid montane forests at mid‐elevations and was low in the drier habitats at the ends of the gradient. Humid montane forests were most sensitive to disturbance, showing increases in mean annual temperatures by about 1 °C and reduction in relative air humidity by about 20% in DF and SF compared to NF. This was together with a reduction in fern species richness of 5–60% and marked changes in species composition. In contrast, drought‐deciduous forests at low elevations and coniferous forests at high elevations already had low humidity and high light intensity in NF and were less affected by human impact: their microclimatic conditions and fern assemblages did not change markedly in DF and SF. Conclusions The conservation of much of the humidity‐dependent biota (ferns and presumably also groups such as bryophytes and amphibians) in humid montane forests depends on the protection of natural fragments without human disturbance. In contrast, the naturally open forests at the ends of the gradient can be subjected to some exploitation while conserving much of their fern flora as long as a general forest structure is maintained.

Identifiants

OPENALEX

W2618115262

DOI

10.1111/avsc.12318

Repères documentaires

Famille documentaire

Doctrine

Types déclarés par les sources

article

Juridictions étudiées — sources explicites

MX

Entités naturelles mentionnées

Forêt · Mer · Espèce

Les mentions d’entités ne constituent pas une preuve de reconnaissance juridique. La juridiction étudiée est distincte du pays d’affiliation des auteurs.

Sources

OpenAlex · Document 1 · Document 2

• DOI · https://doi.org/10.1111/avsc.12318
• OpenAlex · https://openalex.org/W2618115262

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