Effects of forest fragmentation on the seedling recruitment of a tropical herb: Assessing seed vs. safe-site limitation
Studies simultaneously evaluating the importance of safe-site and seed limitation for plant establishment are rare, particularly in human-modified landscapes. We used spatially explicit neighborhood models together with data from 10 0.5-ha mapped census plots in a fragmented landscape spanning 1000...
| Autor principal: | Uríarte, Ma?ia |
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| Outros Autores: | Bruna, Emilio M., Rubim, Paulo, Anciães, Marina, Jonckheere, Inge G.C. |
| Grau: | Artigo |
| Idioma: | English |
| Publicado em: |
Ecology
2020
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| Assuntos: | |
| Acesso em linha: |
https://repositorio.inpa.gov.br/handle/1/18322 |
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oai:repositorio:1-18322 |
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dspace |
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oai:repositorio:1-18322 Effects of forest fragmentation on the seedling recruitment of a tropical herb: Assessing seed vs. safe-site limitation Uríarte, Ma?ia Bruna, Emilio M. Rubim, Paulo Anciães, Marina Jonckheere, Inge G.C. Anthropogenic Effect Forest Ecosystem Functional Group Habitat Fragmentation Landscape Change Monocotyledon Pollinator Recruitment (population Dynamics) Seed Production Seedling Establishment Tropical Forest Understory Biological Model Demography Ecosystem Energy Conservation Heliconiaceae Physiology Seed Plant Seedling Tree Conservation Of Energy Resources Demography Ecosystem Heliconiaceae Models, Biological Seedling Seeds Trees Amazonia Heliconia Acuminata Studies simultaneously evaluating the importance of safe-site and seed limitation for plant establishment are rare, particularly in human-modified landscapes. We used spatially explicit neighborhood models together with data from 10 0.5-ha mapped census plots in a fragmented landscape spanning 1000 km2 to (1) evaluate the relative importance of seed production, dispersal, and safe-site limitation for the recruitment of the understory herb Heliconia acuminata; and (2) determine how these processes differ between fragments and continuous forests. Our analyses demonstrated a large degree of variation in seed production, dispersal, and establishment among and within the 10 study plots. Seed production limitation was strong but only at small spatial scales. Average dispersal distance was less than 4 m, leading to severe dispersal limitation at most sites. Overall, safe-site limitation was the most important constraint on seedling establishment. Fragmentation led to a more heterogeneous light environment with negative consequences for seedling establishment but had little effect on seed production or dispersal. These results suggest that the effects of fragmentation on abiotic processes may be more important than the disruption of biotic interactions in driving biodiversity loss in tropical forests, at least for some functional groups. These effects may be common when the matrix surrounding fragments contains enough tree cover to enable movement of dispersere and pollinators. © 2010 by the Ecological Society of America. 2020-06-15T21:53:41Z 2020-06-15T21:53:41Z 2010 Artigo https://repositorio.inpa.gov.br/handle/1/18322 10.1890/09-0785.1 en Volume 91, Número 5, Pags. 1317-1328 Restrito Ecology |
| institution |
Instituto Nacional de Pesquisas da Amazônia - Repositório Institucional |
| collection |
INPA-RI |
| language |
English |
| topic |
Anthropogenic Effect Forest Ecosystem Functional Group Habitat Fragmentation Landscape Change Monocotyledon Pollinator Recruitment (population Dynamics) Seed Production Seedling Establishment Tropical Forest Understory Biological Model Demography Ecosystem Energy Conservation Heliconiaceae Physiology Seed Plant Seedling Tree Conservation Of Energy Resources Demography Ecosystem Heliconiaceae Models, Biological Seedling Seeds Trees Amazonia Heliconia Acuminata |
| spellingShingle |
Anthropogenic Effect Forest Ecosystem Functional Group Habitat Fragmentation Landscape Change Monocotyledon Pollinator Recruitment (population Dynamics) Seed Production Seedling Establishment Tropical Forest Understory Biological Model Demography Ecosystem Energy Conservation Heliconiaceae Physiology Seed Plant Seedling Tree Conservation Of Energy Resources Demography Ecosystem Heliconiaceae Models, Biological Seedling Seeds Trees Amazonia Heliconia Acuminata Uríarte, Ma?ia Effects of forest fragmentation on the seedling recruitment of a tropical herb: Assessing seed vs. safe-site limitation |
| topic_facet |
Anthropogenic Effect Forest Ecosystem Functional Group Habitat Fragmentation Landscape Change Monocotyledon Pollinator Recruitment (population Dynamics) Seed Production Seedling Establishment Tropical Forest Understory Biological Model Demography Ecosystem Energy Conservation Heliconiaceae Physiology Seed Plant Seedling Tree Conservation Of Energy Resources Demography Ecosystem Heliconiaceae Models, Biological Seedling Seeds Trees Amazonia Heliconia Acuminata |
| description |
Studies simultaneously evaluating the importance of safe-site and seed limitation for plant establishment are rare, particularly in human-modified landscapes. We used spatially explicit neighborhood models together with data from 10 0.5-ha mapped census plots in a fragmented landscape spanning 1000 km2 to (1) evaluate the relative importance of seed production, dispersal, and safe-site limitation for the recruitment of the understory herb Heliconia acuminata; and (2) determine how these processes differ between fragments and continuous forests. Our analyses demonstrated a large degree of variation in seed production, dispersal, and establishment among and within the 10 study plots. Seed production limitation was strong but only at small spatial scales. Average dispersal distance was less than 4 m, leading to severe dispersal limitation at most sites. Overall, safe-site limitation was the most important constraint on seedling establishment. Fragmentation led to a more heterogeneous light environment with negative consequences for seedling establishment but had little effect on seed production or dispersal. These results suggest that the effects of fragmentation on abiotic processes may be more important than the disruption of biotic interactions in driving biodiversity loss in tropical forests, at least for some functional groups. These effects may be common when the matrix surrounding fragments contains enough tree cover to enable movement of dispersere and pollinators. © 2010 by the Ecological Society of America. |
| format |
Artigo |
| author |
Uríarte, Ma?ia |
| author2 |
Bruna, Emilio M. Rubim, Paulo Anciães, Marina Jonckheere, Inge G.C. |
| author2Str |
Bruna, Emilio M. Rubim, Paulo Anciães, Marina Jonckheere, Inge G.C. |
| title |
Effects of forest fragmentation on the seedling recruitment of a tropical herb: Assessing seed vs. safe-site limitation |
| title_short |
Effects of forest fragmentation on the seedling recruitment of a tropical herb: Assessing seed vs. safe-site limitation |
| title_full |
Effects of forest fragmentation on the seedling recruitment of a tropical herb: Assessing seed vs. safe-site limitation |
| title_fullStr |
Effects of forest fragmentation on the seedling recruitment of a tropical herb: Assessing seed vs. safe-site limitation |
| title_full_unstemmed |
Effects of forest fragmentation on the seedling recruitment of a tropical herb: Assessing seed vs. safe-site limitation |
| title_sort |
effects of forest fragmentation on the seedling recruitment of a tropical herb: assessing seed vs. safe-site limitation |
| publisher |
Ecology |
| publishDate |
2020 |
| url |
https://repositorio.inpa.gov.br/handle/1/18322 |
| _version_ |
1787141328125034496 |
| score |
11.755432 |