Microclimatic convergence of high‐elevation tropical páramo and temperate‐zone alpine environments
Abstract. Plant microclimates of three tropical superpáramo sites at 4100–4600 m a.s.l. in Ecuador were monitored over a five‐month period and results were evaluated in local and biogeographical contexts. Soil temperatures tended to decrease with altitude, whereas quantum flux density (QFD) exhibite...
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crwiley:10.2307/3236460 2023-12-03T10:18:07+01:00 Microclimatic convergence of high‐elevation tropical páramo and temperate‐zone alpine environments Diemer, Matthias 1996 http://dx.doi.org/10.2307/3236460 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.2307%2F3236460 https://onlinelibrary.wiley.com/doi/pdf/10.2307/3236460 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Journal of Vegetation Science volume 7, issue 6, page 821-830 ISSN 1100-9233 1654-1103 Plant Science Ecology journal-article 1996 crwiley https://doi.org/10.2307/3236460 2023-11-09T13:18:44Z Abstract. Plant microclimates of three tropical superpáramo sites at 4100–4600 m a.s.l. in Ecuador were monitored over a five‐month period and results were evaluated in local and biogeographical contexts. Soil temperatures tended to decrease with altitude, whereas quantum flux density (QFD) exhibited no consistent altitudinal pattern. Leaf temperatures of prostrate rosette and cushion plants exhibited diurnal amplitudes of 30 °C independent of altitude, while herbaceous perennials and woody shrubs, which were situated higher above the soil surface, had lower maxima and lower daily amplitudes as a result of aerodynamic coupling to the atmosphere. Long‐term growth measurements and an analysis of a stem cross‐section of the shrub Loricaria indicated that growth conditions at 4060 m a.s.l. were constant over a 4‐yr to > 25‐yr period. Means and frequency distributions of QFD as well as soil and leaf temperatures in the Ecuadorean Andes closely resemble growing season averages at high alpine sites in the European Central Alps at 2600 m a.s.l. Equivalent growth conditions in equatorial tropical páramo sites and seasonal temperate zone mountains extending to the arctic, suggest that, aside from the duration of the growing season, similar abiotic selection pressures operate on high elevation plants in humid mountain ecosystems, which are largely independent of latitude. Article in Journal/Newspaper Arctic Wiley Online Library (via Crossref) Arctic Journal of Vegetation Science 7 6 821 830 |
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Wiley Online Library (via Crossref) |
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crwiley |
language |
English |
topic |
Plant Science Ecology |
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Plant Science Ecology Diemer, Matthias Microclimatic convergence of high‐elevation tropical páramo and temperate‐zone alpine environments |
topic_facet |
Plant Science Ecology |
description |
Abstract. Plant microclimates of three tropical superpáramo sites at 4100–4600 m a.s.l. in Ecuador were monitored over a five‐month period and results were evaluated in local and biogeographical contexts. Soil temperatures tended to decrease with altitude, whereas quantum flux density (QFD) exhibited no consistent altitudinal pattern. Leaf temperatures of prostrate rosette and cushion plants exhibited diurnal amplitudes of 30 °C independent of altitude, while herbaceous perennials and woody shrubs, which were situated higher above the soil surface, had lower maxima and lower daily amplitudes as a result of aerodynamic coupling to the atmosphere. Long‐term growth measurements and an analysis of a stem cross‐section of the shrub Loricaria indicated that growth conditions at 4060 m a.s.l. were constant over a 4‐yr to > 25‐yr period. Means and frequency distributions of QFD as well as soil and leaf temperatures in the Ecuadorean Andes closely resemble growing season averages at high alpine sites in the European Central Alps at 2600 m a.s.l. Equivalent growth conditions in equatorial tropical páramo sites and seasonal temperate zone mountains extending to the arctic, suggest that, aside from the duration of the growing season, similar abiotic selection pressures operate on high elevation plants in humid mountain ecosystems, which are largely independent of latitude. |
format |
Article in Journal/Newspaper |
author |
Diemer, Matthias |
author_facet |
Diemer, Matthias |
author_sort |
Diemer, Matthias |
title |
Microclimatic convergence of high‐elevation tropical páramo and temperate‐zone alpine environments |
title_short |
Microclimatic convergence of high‐elevation tropical páramo and temperate‐zone alpine environments |
title_full |
Microclimatic convergence of high‐elevation tropical páramo and temperate‐zone alpine environments |
title_fullStr |
Microclimatic convergence of high‐elevation tropical páramo and temperate‐zone alpine environments |
title_full_unstemmed |
Microclimatic convergence of high‐elevation tropical páramo and temperate‐zone alpine environments |
title_sort |
microclimatic convergence of high‐elevation tropical páramo and temperate‐zone alpine environments |
publisher |
Wiley |
publishDate |
1996 |
url |
http://dx.doi.org/10.2307/3236460 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.2307%2F3236460 https://onlinelibrary.wiley.com/doi/pdf/10.2307/3236460 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
Journal of Vegetation Science volume 7, issue 6, page 821-830 ISSN 1100-9233 1654-1103 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.2307/3236460 |
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Journal of Vegetation Science |
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7 |
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6 |
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821 |
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830 |
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1784265091563126784 |