Experimental assessment of Heliconia acuminata growth in a fragmented Amazonian landscape
1. Fragmentation severely alters physical conditions in forest understories, but few studies have connected these changes to demographic impacts on forest species using detailed experimental examination at the individual and population levels. 2. Using a 32-month, reciprocal-transplant experiment, w...
| Autor principal: | Bruna, Emilio M. |
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| Outros Autores: | Nardy, Olavo, Strauss, Sharon Y., Harrison, Susan P. |
| Grau: | Artigo |
| Idioma: | English |
| Publicado em: |
Journal of Ecology
2020
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| Assuntos: | |
| Acesso em linha: |
https://repositorio.inpa.gov.br/handle/1/19044 |
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oai:repositorio:1-19044 |
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dspace |
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oai:repositorio:1-19044 Experimental assessment of Heliconia acuminata growth in a fragmented Amazonian landscape Bruna, Emilio M. Nardy, Olavo Strauss, Sharon Y. Harrison, Susan P. Growth Rate Habitat Fragmentation Population Ecology Root/shoot Ratio Understory Water Stress South America Heliconia Heliconiaceae Magnoliophyta 1. Fragmentation severely alters physical conditions in forest understories, but few studies have connected these changes to demographic impacts on forest species using detailed experimental examination at the individual and population levels. 2. Using a 32-month, reciprocal-transplant experiment, we show that individuals of the Amazonian understory herb Heliconia acuminata transplanted into forest fragments lost over 20% of their vegetative shoots, while those transplanted to continuous forest showed a slight gain. The leaf area of plants in fragments also increased at half the rate it did in continuous forest sites. 3. It appears that the normal dry season stresses to which forest understorey plants are exposed are greatly exacerbated in fragments, causing plants to shed shoots and leaves. 4. The observed shifts in size could help explain why populations in fragments are more skewed towards smaller demographic stage classes than those in continuous forest. These shifts in size structure could also result in reduced abundances of flowering plants, as reproduction in H. acuminata is positively correlated with shoot number. 5. Fragmentation-related changes in growth rates resulting from abiotic stress may have significant demographic consequences. 2020-06-15T22:04:53Z 2020-06-15T22:04:53Z 2002 Artigo https://repositorio.inpa.gov.br/handle/1/19044 10.1046/j.1365-2745.2002.00707.x en Volume 90, Número 4, Pags. 639-649 Restrito Journal of Ecology |
| institution |
Instituto Nacional de Pesquisas da Amazônia - Repositório Institucional |
| collection |
INPA-RI |
| language |
English |
| topic |
Growth Rate Habitat Fragmentation Population Ecology Root/shoot Ratio Understory Water Stress South America Heliconia Heliconiaceae Magnoliophyta |
| spellingShingle |
Growth Rate Habitat Fragmentation Population Ecology Root/shoot Ratio Understory Water Stress South America Heliconia Heliconiaceae Magnoliophyta Bruna, Emilio M. Experimental assessment of Heliconia acuminata growth in a fragmented Amazonian landscape |
| topic_facet |
Growth Rate Habitat Fragmentation Population Ecology Root/shoot Ratio Understory Water Stress South America Heliconia Heliconiaceae Magnoliophyta |
| description |
1. Fragmentation severely alters physical conditions in forest understories, but few studies have connected these changes to demographic impacts on forest species using detailed experimental examination at the individual and population levels. 2. Using a 32-month, reciprocal-transplant experiment, we show that individuals of the Amazonian understory herb Heliconia acuminata transplanted into forest fragments lost over 20% of their vegetative shoots, while those transplanted to continuous forest showed a slight gain. The leaf area of plants in fragments also increased at half the rate it did in continuous forest sites. 3. It appears that the normal dry season stresses to which forest understorey plants are exposed are greatly exacerbated in fragments, causing plants to shed shoots and leaves. 4. The observed shifts in size could help explain why populations in fragments are more skewed towards smaller demographic stage classes than those in continuous forest. These shifts in size structure could also result in reduced abundances of flowering plants, as reproduction in H. acuminata is positively correlated with shoot number. 5. Fragmentation-related changes in growth rates resulting from abiotic stress may have significant demographic consequences. |
| format |
Artigo |
| author |
Bruna, Emilio M. |
| author2 |
Nardy, Olavo Strauss, Sharon Y. Harrison, Susan P. |
| author2Str |
Nardy, Olavo Strauss, Sharon Y. Harrison, Susan P. |
| title |
Experimental assessment of Heliconia acuminata growth in a fragmented Amazonian landscape |
| title_short |
Experimental assessment of Heliconia acuminata growth in a fragmented Amazonian landscape |
| title_full |
Experimental assessment of Heliconia acuminata growth in a fragmented Amazonian landscape |
| title_fullStr |
Experimental assessment of Heliconia acuminata growth in a fragmented Amazonian landscape |
| title_full_unstemmed |
Experimental assessment of Heliconia acuminata growth in a fragmented Amazonian landscape |
| title_sort |
experimental assessment of heliconia acuminata growth in a fragmented amazonian landscape |
| publisher |
Journal of Ecology |
| publishDate |
2020 |
| url |
https://repositorio.inpa.gov.br/handle/1/19044 |
| _version_ |
1787141496285167616 |
| score |
11.653393 |