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Journal of Biogeography

Resumen/Descripción – provisto por la editorial en inglés
Papers dealing with all aspects of spatial, ecological and historical biogeography are considered for publication in Journal of Biogeography.
Palabras clave – provistas por la editorial

journal of biogeography; animal geography; biodiversity; biogeography; botany; climatology; conserva

Disponibilidad
Institución detectada Período Navegá Descargá Solicitá
No detectada desde ene. 1996 / hasta dic. 2023 Wiley Online Library

Información

Tipo de recurso:

revistas

ISSN impreso

0305-0270

ISSN electrónico

1365-2699

Editor responsable

John Wiley & Sons, Inc. (WILEY)

País de edición

Estados Unidos

Fecha de publicación

Cobertura temática

Tabla de contenidos

Climatic influences on fire regimes along a rain forest‐to‐xeric woodland gradient in northern Patagonia, Argentina

Thomas Kitzberger; Thomas T. Veblen; Ricardo Villalba

<jats:p><jats:bold>ABSTRACT. </jats:bold> Influences of annual climatic variation on fire occurrence were examined along a rainfall gradient from temperate rainforest to xeric woodlands in northern Patagonia, Argentina. Fire chronologies were derived from fire scars on trees and related to tree‐ring proxy records of climate over the period 1820–1974. Similarly, fire records of four Patagonian national parks for the period 1940–1988 were compared to instrumental weather data. Finally, the influences of broad‐scale synoptic weather patterns on fire occurrence in northern Patagonia were explored.</jats:p><jats:p>Fire in <jats:italic>Nothofagus</jats:italic> rainforests is highly dependent on drought during the spring and summer of the same year in which fires occur and is less strongly favoured by drought during the spring of the previous year. The occurrence of fire in dry vegetation types near the steppe ecotone is less dependent on drought because even during years of normal weather fuels are thoroughly desiccated during the dry summer. In xeric <jats:italic>Austrocedrus</jats:italic> woodlands, fire occurrence and spread are promoted by droughts during the fire season and also appear to be favoured by above‐average moisture conditions during the preceding 1 to 2 growing seasons which enhances fuel production. Thus, in the xeric woodlands fire is not simply dependent on drought but is favoured by greater climatic variability over time scales of several years.</jats:p><jats:p>Fire activity in northern Patagonia is greatly influenced by the intensity and latitudinal position of the subtropical high pressure cell of the southeast Pacific. Greater fire activity is associated with a more intense and more southerly located high pressure cell which blocks the influx of Pacific moisture into the continent. Although long‐term changes in fire occurrence along the rainforest‐to‐xeric woodland gradient have been greatly influenced by human activities, annual variation in fire frequency and extent is also strongly influenced by annual climatic variation.</jats:p>

Palabras clave: Ecology; Ecology, Evolution, Behavior and Systematics.

Pp. 35-47

Out of the Palaeotropics? Historical biogeography and diversification of the cosmopolitan ectomycorrhizal mushroom family Inocybaceae

P. Brandon Matheny; M. Catherine Aime; Neale L. Bougher; Bart Buyck; Dennis E. Desjardin; Egon Horak; Bradley R. Kropp; D. Jean Lodge; Kasem Soytong; James M. Trappe; David S. Hibbett

Palabras clave: Ecology; Ecology, Evolution, Behavior and Systematics.

Pp. 577-592

Leaf traits and temperature shape the elevational patterns of phyllosphere microbiome

Xing Wang; Zuoqiang YuanORCID; Arshad AliORCID; Teng YangORCID; Fei Lin; Zikun Mao; Ji Ye; Shuai Fang; Zhanqing Hao; XugaoWang; Yoann Le Bagousse‐Pinguet

<jats:title>Abstract</jats:title><jats:sec><jats:title>Aim</jats:title><jats:p>The phyllosphere microbiome is central to plant health, distribution, and ecosystem function, yet, we lack a clear understanding of the drivers shaping their diversity in mountain ranges. Here, we examined how the endo‐ and epiphytic phyllosphere microbiomes of mountains simultaneously respond to climate and leaf functional traits.</jats:p></jats:sec><jats:sec><jats:title>Location</jats:title><jats:p>Temperate forests of Changbai Mountain Natural Reserve, China.</jats:p></jats:sec><jats:sec><jats:title>Methods</jats:title><jats:p>We collected the leaves of dominant tree species along seven elevations from 800 to 1950. We investigated changes in species richness and Shannon diversity of endo‐ and epiphytic phyllosphere fungal and bacterial communities (using next‐generation sequencing of ITS2 and 16S) along an 1150 m elevational gradient. We also examined the direct and indirect effects of climate (mean annual temperature; MAT) and 13 leaf morphological and chemical traits on the microbiome of the phyllosphere.</jats:p></jats:sec><jats:sec><jats:title>Results</jats:title><jats:p>Phyllosphere microbiome declined monotonically with increasing elevation, contrasting with the hump‐shaped biodiversity patterns that are commonly reported. We observed a steeper decline in epiphytic bacterial diversity than in endophytic bacteria, whereas conversely endophytic fungi diversity declined more dramatically with increasing elevation than epiphytic fungi. Host plant traits – those involved in resource uptake and leaf surface temperature – predominantly shaped the elevational patterns of endophytic phyllosphere microbiome, whereas MAT mostly increased the richness and Shannon diversity of epiphytic organisms. We also observed weak, but significant indirect effects suggesting that host plant traits are important biotic drivers mediating climate effects on endophytic phyllosphere microbiome. Also, no covariation between bacteria and fungi was observed (neither for endophytic nor for epiphytic organisms), supporting neutral associations between bacterial and fungal communities, irrespective of the elevation.</jats:p></jats:sec><jats:sec><jats:title>Main Conclusions</jats:title><jats:p>Both direct and mediating effects of plant traits should be considered to better understand the drivers shaping the richness and Shannon diversity of endo‐ and epiphytic phyllosphere microbiomes, and more generally the plant–microbe associations. Our study also offers a trait‐based attempt to disentangle the effects of biotic and abiotic filters in shaping endo‐ and epiphytic phyllosphere microbiome along an elevational gradient.</jats:p></jats:sec>

Pp. 2135-2147