Postdispersal seed predation on sisyrinchium arenarium (Iridaceae) at two elevations in the central Chilean Andes
Postdispersal seed predation in alpine communities has received surprisingly little attention. We evaluate the magnitude of seed predation by ants and avian granivores in the perennial herb Sisyrinchium arenarium through a field experiment at two different elevations (2700 and 2000 m) in the central...
Published in: | Arctic, Antarctic, and Alpine Research |
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Language: | English |
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Online Access: | https://doi.org/10.2307/1552469 https://repositorio.uchile.cl/handle/2250/155981 |
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ftunivchile:oai:repositorio.uchile.cl:2250/155981 2023-05-15T14:14:00+02:00 Postdispersal seed predation on sisyrinchium arenarium (Iridaceae) at two elevations in the central Chilean Andes Muñoz, Alejandro Arroyo, Mary T. K. 2002 application/pdf https://doi.org/10.2307/1552469 https://repositorio.uchile.cl/handle/2250/155981 en eng Institute of Arctic and Alpine Research Arctic. Antarctic, and Alpine Research, Vol. 34, No.2, 2002, pp. 178-184 15230430 doi:10.2307/1552469 https://repositorio.uchile.cl/handle/2250/155981 Attribution-NonCommercial-NoDerivs 3.0 Chile http://creativecommons.org/licenses/by-nc-nd/3.0/cl/ CC-BY-NC-ND Arctic, Antarctic, and Alpine Research Global and planetary change Ecology evolution behavior and systematics Earth-surface processes Artículo de revista 2002 ftunivchile https://doi.org/10.2307/1552469 2023-01-22T00:56:11Z Postdispersal seed predation in alpine communities has received surprisingly little attention. We evaluate the magnitude of seed predation by ants and avian granivores in the perennial herb Sisyrinchium arenarium through a field experiment at two different elevations (2700 and 2000 m) in the central Chilean Andes. A total of 96 pots, containing 50 seeds each, were placed at each elevation and randomly assigned to one of four treatments: control, bird exclusion, ant exclusion, and total exclusion (wind control). We also compare the activity of ants and avian granivores at the two elevations. Mean percentage seed removal by wind was 23 and 21% at 2700 and 2000 m elevation, respectively. Overall, after subtracting seed loss by wind, seed removal by granivores was low at both sites (2-14%), although it was significantly greater at the higher elevation (2700 m). This was concordant with the greater activity of ants and granivorous birds there. Seed removal by ants was greater than by birds at the higher site (14 vs. 4%, respectively), but did not differ at the lower elevation (3 vs. 2%, respectively). Results contrast with those reported for central Chilean mediterranean-type climate shrublands at lower elevations where avian and rodent granivory is important, while that by ants is low. Future studies considering plant species with different seed characteristics (e.g., size, shape, energetic value) and taxonomic affiliation will be necessary to assess the general importance of this ecological process in the central Chilean Andes and alpine areas in general Article in Journal/Newspaper Antarctic and Alpine Research Arctic Universidad de Chile: Repositorio académico Arctic, Antarctic, and Alpine Research 34 2 178 |
institution |
Open Polar |
collection |
Universidad de Chile: Repositorio académico |
op_collection_id |
ftunivchile |
language |
English |
topic |
Global and planetary change Ecology evolution behavior and systematics Earth-surface processes |
spellingShingle |
Global and planetary change Ecology evolution behavior and systematics Earth-surface processes Muñoz, Alejandro Arroyo, Mary T. K. Postdispersal seed predation on sisyrinchium arenarium (Iridaceae) at two elevations in the central Chilean Andes |
topic_facet |
Global and planetary change Ecology evolution behavior and systematics Earth-surface processes |
description |
Postdispersal seed predation in alpine communities has received surprisingly little attention. We evaluate the magnitude of seed predation by ants and avian granivores in the perennial herb Sisyrinchium arenarium through a field experiment at two different elevations (2700 and 2000 m) in the central Chilean Andes. A total of 96 pots, containing 50 seeds each, were placed at each elevation and randomly assigned to one of four treatments: control, bird exclusion, ant exclusion, and total exclusion (wind control). We also compare the activity of ants and avian granivores at the two elevations. Mean percentage seed removal by wind was 23 and 21% at 2700 and 2000 m elevation, respectively. Overall, after subtracting seed loss by wind, seed removal by granivores was low at both sites (2-14%), although it was significantly greater at the higher elevation (2700 m). This was concordant with the greater activity of ants and granivorous birds there. Seed removal by ants was greater than by birds at the higher site (14 vs. 4%, respectively), but did not differ at the lower elevation (3 vs. 2%, respectively). Results contrast with those reported for central Chilean mediterranean-type climate shrublands at lower elevations where avian and rodent granivory is important, while that by ants is low. Future studies considering plant species with different seed characteristics (e.g., size, shape, energetic value) and taxonomic affiliation will be necessary to assess the general importance of this ecological process in the central Chilean Andes and alpine areas in general |
format |
Article in Journal/Newspaper |
author |
Muñoz, Alejandro Arroyo, Mary T. K. |
author_facet |
Muñoz, Alejandro Arroyo, Mary T. K. |
author_sort |
Muñoz, Alejandro |
title |
Postdispersal seed predation on sisyrinchium arenarium (Iridaceae) at two elevations in the central Chilean Andes |
title_short |
Postdispersal seed predation on sisyrinchium arenarium (Iridaceae) at two elevations in the central Chilean Andes |
title_full |
Postdispersal seed predation on sisyrinchium arenarium (Iridaceae) at two elevations in the central Chilean Andes |
title_fullStr |
Postdispersal seed predation on sisyrinchium arenarium (Iridaceae) at two elevations in the central Chilean Andes |
title_full_unstemmed |
Postdispersal seed predation on sisyrinchium arenarium (Iridaceae) at two elevations in the central Chilean Andes |
title_sort |
postdispersal seed predation on sisyrinchium arenarium (iridaceae) at two elevations in the central chilean andes |
publisher |
Institute of Arctic and Alpine Research |
publishDate |
2002 |
url |
https://doi.org/10.2307/1552469 https://repositorio.uchile.cl/handle/2250/155981 |
genre |
Antarctic and Alpine Research Arctic |
genre_facet |
Antarctic and Alpine Research Arctic |
op_source |
Arctic, Antarctic, and Alpine Research |
op_relation |
Arctic. Antarctic, and Alpine Research, Vol. 34, No.2, 2002, pp. 178-184 15230430 doi:10.2307/1552469 https://repositorio.uchile.cl/handle/2250/155981 |
op_rights |
Attribution-NonCommercial-NoDerivs 3.0 Chile http://creativecommons.org/licenses/by-nc-nd/3.0/cl/ |
op_rightsnorm |
CC-BY-NC-ND |
op_doi |
https://doi.org/10.2307/1552469 |
container_title |
Arctic, Antarctic, and Alpine Research |
container_volume |
34 |
container_issue |
2 |
container_start_page |
178 |
_version_ |
1766286518788292608 |