Results 131 to 140 of about 35,780 (302)

Plastic Responses Contribute to Explaining Altitudinal and Temporal Variation in Potential Flower Longevity in High Andean Rhodolirion montanum.

open access: yesPLoS ONE, 2016
The tendency for flower longevity to increase with altitude is believed by many alpine ecologists to play an important role in compensating for low pollination rates at high altitudes due to cold and variable weather conditions.
Diego Andrés Pacheco   +4 more
doaj   +1 more source

Satellite hindcasts of foliar traits reveal a subtle but consistent relaxation of conservativeness in a biodiverse mountain grassland over the last four decades

open access: yesEcography, EarlyView.
Projected warming and drying raise concerns about the resilience of stress‐adapted ecosystems, including the Brazilian Campo Rupestre, an exceptionally biodiverse mountaintop grassland mosaic on ancient, nutrient‐poor substrates. Here, we combine field‐based trait data and long‐term remote sensing to assess the functional structure and temporal ...
Renata Maia   +5 more
wiley   +1 more source

Pattern and process of vegetation change (succession) in recent volcanic landscapes of New Zealand and Hawaii [PDF]

open access: yes, 2010
Volcanic activity (including lava flows, debris flows and tephra eruptions) is a regular feature of many landscapes of the North Island of New Zealand and the Hawaiian archipelago.
Clarkson, Beverley R.   +1 more
core   +1 more source

Warming summers limit reindeer grazing, weakening herbivory pressure in the mountain tundra

open access: yesEcography, EarlyView.
Climate change is predicted to alter species interactions by exposing ecosystems to increasingly frequent and intense warm spells. In the mountain tundra, grazing by large herbivores, particularly reindeer, can limit shrub expansion and preserve Arctic plant diversity.
Marianne Stoessel   +2 more
wiley   +1 more source

Vegetation on the move: elevational shifts and greening dynamics across the Himalayan alpine zone

open access: yesEcography, EarlyView.
This study investigates alpine ‘vegetation line' (the upper limit of continuous plant community) dynamics in the Himalayan alpine zone (HAZ) over a 24‐year timescale (1999–2022) using maximum NDVI products derived from Landsat series datasets, adjusted for sampling bias using phenological modelling.
Ruolin Leng   +5 more
wiley   +1 more source

South American polypores : first annotated checklist from Argentinean Yungas [PDF]

open access: yes, 2007
A preliminary checklist of the polypore mycota of “Yungas”, subtropical mountain forests of northwestern Argentina, is presented. An intensive search of records in literature was done, and polypore exsiccatae from that phytogeographic province kept at ...
Rajchenberg, Mario   +1 more
core  

Simulating past and future refugia for temperate trees in northern Italy

open access: yesEcography, EarlyView.
During the Quaternary, trees responded to the climatic changes of glacial–interglacial cycles with large‐scale range shifts. Over cold glacials, temperate tree species contracted their ranges and survived in areas known as refugia. Several studies point to the Euganean Hills (Colli Euganei), in Veneto, northern Italy, as one of the northernmost ...
Azzurra Pistone   +4 more
wiley   +1 more source

Tracing the origins and evolution of nymphalid butterflies (Lepidoptera) in the Atlantic Forest

open access: yesEcography, EarlyView.
Understanding the relative roles of diversification and dispersal is key to explaining large‐scale biogeographical patterns. Although both processes are known to shape biodiversity, their relative contributions remain understudied for many organisms. Here, we examine how these processes have jointly contributed to the exceptional diversity and endemism
Mar Repullés   +7 more
wiley   +1 more source

Efecto de la temperatura en la regeneración de especies leñosas del Chaco Serrano e implicancias en la distribución actual y potencial de bosques

open access: yesBoletín de la Sociedad Argentina de Botánica, 2012
La temperatura influye sobre los límites de distribución de las especies leñosas, actuando sobre los procesos asociados con la fase regenerativa de las plantas.
Ana I Pais Bosch   +3 more
doaj  

Compositional changes in bee and wasp communities along Neotropical mountain altitudinal gradient.

open access: yesPLoS ONE, 2017
Climate conditions tend to differ along an altitudinal gradient, resulting in some species groups' patterns of lower species richness with increasing altitude.
Lucas Neves Perillo   +3 more
doaj   +1 more source

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