Global ecosystem typology

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T6.5 Tropical alpine grasslands and herbfields

Biome: T6. Polar/alpine (cryogenic) biome

Contributors:
(texts)

Tropical alpine grasslands and herbfields are limited to a few mountainous areas of Africa, the Americas and southeast Asia. Productivity is low, limited by dry conditions, rocky substrate and nightly cold, but is not strongly seasonal. Snow and fog are common. Typical flora includes mosses, lichens, and flowering plants including distinctive megaherbs and low shrubs. Plant species have adaptations for cold dry conditions, such as tiny leaves, cushion and rosette growth forms and slow growth. Plant composition is affected by competition and facilitation between species, as well as grazing and occasional fires. Simple foodwebs include invertebrates, small mammals and reptiles, along with visiting predators and occasional herbivores from lowland savannas.

Key Features

Dense perennial C3 cold tolerant tussock grasslands, with distinctive arborescent rosette and cushion growth forms, treeless except for sheltered gullies..

Overview of distribution

High mountain tops of tropics.

Profile versions

Main references

Selected references for this functional group:

Diagrammatic assembly model

Diagrammatic assembly model of T6.5 Tropical alpine grasslands and herbfields. See general notes on diagrams. Open image full size.

Maps

Maps are indicative of global distribution patterns are not intended to represent fine-scale patterns. The maps show areas of the world containing major (coloured red) or minor occurrences (coloured yellow) of each ecosystem functional group. See general notes on maps.

There are 2 alternative versions of the indicative map for this functional group, please compare description and sources below.

T6.5.IM.mix_v1.0

Datasets

  • Resolve-Ecoregions-2017
  • EarthEnv-LandCover-v1.0

Map references

  • Dinerstein E, Olson D, Joshi A, Vynne C, Burgess ND, Wikramanayake E, Hahn N, Palminteri S, Hedao P, Noss R, Hansen M, Locke H, Ellis EE, Jones B, Barber CV, Hayes R, Kormos C, Martin V, Crist E, Sechrest W, Price L, Baillie JEM, Weeden D, Suckling K, Davis C, Sizer N, Moore R, Thau D, Birch T, Potapov P, Turubanova S, Tyukavina A, de Souza N, Pintea L, Brito JC, Llewellyn Barnekow Lillesø JP, van Breugel P, Graudal L, Voge M, Al-Shammari KF, Saleem M (2017) An Ecoregion-Based Approach to Protecting Half the Terrestrial Realm, BioScience 67: 534–545. DOI:10.1093/biosci/bix014. Data-set available on-line

  • Tuanmu, M.-N. and W. Jetz (2014) A global 1-km consensus land-cover product for biodiversity and ecosystem modeling Global Ecology and Biogeography 23(9):1031–1045 DOI:10.1111/geb.12182

T6.5.web.mix_v1.0

Major and minor occurrences were initially identified using consensus land-cover maps (Tuanmu et al. 2014) and then cropped to selected terrestrial ecoregions (Dinerstein et al. 2017) at 30 arc seconds spatial resolution. Ecoregions were selected if: i) their descriptions mentioned features consistent with those identified in the profile of the Ecosystem Functional Group; and ii) if their location was consistent with the ecological drivers described in the profile. Open image full size.

Datasets

  • Resolve-Ecoregions-2017
  • EarthEnv-LandCover-v1.0

Map references

  • Dinerstein E, Olson D, Joshi A, Vynne C, Burgess ND, Wikramanayake E, Hahn N, Palminteri S, Hedao P, Noss R, Hansen M, Locke H, Ellis EE, Jones B, Barber CV, Hayes R, Kormos C, Martin V, Crist E, Sechrest W, Price L, Baillie JEM, Weeden D, Suckling K, Davis C, Sizer N, Moore R, Thau D, Birch T, Potapov P, Turubanova S, Tyukavina A, de Souza N, Pintea L, Brito JC, Llewellyn Barnekow Lillesø JP, van Breugel P, Graudal L, Voge M, Al-Shammari KF, Saleem M (2017) An Ecoregion-Based Approach to Protecting Half the Terrestrial Realm, BioScience 67: 534–545. DOI:10.1093/biosci/bix014. Data-set available on-line

  • Tuanmu, M.-N. and W. Jetz (2014) A global 1-km consensus land-cover product for biodiversity and ecosystem modeling Global Ecology and Biogeography 23(9):1031–1045 DOI:10.1111/geb.12182

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