Herbivory, growth rates, and habitat specialization in tropical tree lineages: Implications for Amazonian beta-diversity
Tropical plant diversity is extraordinarily high at both local and regional scales. Many studies have demonstrated that natural enemies maintain local diversity via negative density dependence, but we know little about how natural enemies influence beta-diversity across habitats and/or regions. One...
| Autor principal: | Lamarre, Greg P.A. |
|---|---|
| Outros Autores: | Baraloto, Christopher, Fortunel, Claire, Dávila, Nállarett, Mesones, Italo, Rios, Julio Grandez, Ríos, Marcos, Valderrama, Elvis, Pilco, Magno Vásquez, Van Antwerp Fine, Paul |
| Grau: | Artigo |
| Idioma: | English |
| Publicado em: |
Ecology
2020
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| Acesso em linha: |
https://repositorio.inpa.gov.br/handle/1/18015 |
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oai:repositorio:1-18015 |
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oai:repositorio:1-18015 Herbivory, growth rates, and habitat specialization in tropical tree lineages: Implications for Amazonian beta-diversity Lamarre, Greg P.A. Baraloto, Christopher Fortunel, Claire Dávila, Nállarett Mesones, Italo Rios, Julio Grandez Ríos, Marcos Valderrama, Elvis Pilco, Magno Vásquez Van Antwerp Fine, Paul Density Dependence Dicotyledon Floodplain Forest Growth Rate Habitat Type Herbivory Natural Enemy Phylogenetics Plant Defense Rainforest Relative Abundance Resource Allocation Resource Availability Soil Fertility Specialization Species Diversity Trade-off Tropical Forest Amazonia French Guiana Peru Bombacoideae Fabaceae Inga Malvaceae Micropholis (angiosperm) Sapotaceae Swartzia Tropical plant diversity is extraordinarily high at both local and regional scales. Many studies have demonstrated that natural enemies maintain local diversity via negative density dependence, but we know little about how natural enemies influence beta-diversity across habitats and/or regions. One way herbivores could influence plant beta-diversity is by driving allocation trade-offs that promote habitat specialization across resource gradients. We therefore predicted that increasing resource availability should be accompanied by increasing herbivory rates and decreasing plant allocation to defense. Second, relative abundances within plant lineages are predicted to reflect patterns of habitat specialization and allocation tradeoffs. A phylogenetic context is vital not only to compare homologous plant traits (including defense strategies) across habitat types, but also to connect evolutionary trade-offs to patterns of species diversification in each phylogenetic lineage. We tested these predictions for trees in white-sand, clay terra firme, and seasonally flooded forests in Peru and French Guiana that represent the range of soil fertility, forest structure, and floristic compositions found throughout the Amazon region. We established 74 0.5-ha plots in these habitats and sampled all trees. Within 12 representative plots we marked newly expanding leaves of 394 saplings representing 68 species, including the most abundant species in each plot in addition to species from five focal lineages: Swartzia and Inga (Fabaceae), Protieae (Burseracaeae), Bombacoideae (Malvaceae), and Micropholis (Sapotaceae). We measured total leaf production rates for each sapling and calculated relative herbivory impact as the ratio between herbivory rate and leaf production rate. Herbivory rates averaged 2.1% per month, did not correlate with leaf production rate, and were similar across habitats. Relative herbivore impacts exceeded leaf production rates for most species. Leaf production rate averaged 2.8%, was significantly higher in seasonally flooded forests than the other two habitats, and exhibited significant correlations with specific leaf area. Species with high herbivory rates exhibited significantly lower relative abundances in terra firme forests. Overall, focal species within lineages present contrasting patterns regarding their herbivory rates and leaf production rate within habitats. These results highlight why a lineage-based approach is necessary when attempting to connect hypotheses regarding evolutionary trade-offs to community assembly patterns. © 2012 by the Ecological Society of America. 2020-06-15T21:50:57Z 2020-06-15T21:50:57Z 2012 Artigo https://repositorio.inpa.gov.br/handle/1/18015 en Volume 93, Número 8 SPEC. ISSUE, Pags. S195-S210 Restrito Ecology |
| institution |
Instituto Nacional de Pesquisas da Amazônia - Repositório Institucional |
| collection |
INPA-RI |
| language |
English |
| topic |
Density Dependence Dicotyledon Floodplain Forest Growth Rate Habitat Type Herbivory Natural Enemy Phylogenetics Plant Defense Rainforest Relative Abundance Resource Allocation Resource Availability Soil Fertility Specialization Species Diversity Trade-off Tropical Forest Amazonia French Guiana Peru Bombacoideae Fabaceae Inga Malvaceae Micropholis (angiosperm) Sapotaceae Swartzia |
| spellingShingle |
Density Dependence Dicotyledon Floodplain Forest Growth Rate Habitat Type Herbivory Natural Enemy Phylogenetics Plant Defense Rainforest Relative Abundance Resource Allocation Resource Availability Soil Fertility Specialization Species Diversity Trade-off Tropical Forest Amazonia French Guiana Peru Bombacoideae Fabaceae Inga Malvaceae Micropholis (angiosperm) Sapotaceae Swartzia Lamarre, Greg P.A. Herbivory, growth rates, and habitat specialization in tropical tree lineages: Implications for Amazonian beta-diversity |
| topic_facet |
Density Dependence Dicotyledon Floodplain Forest Growth Rate Habitat Type Herbivory Natural Enemy Phylogenetics Plant Defense Rainforest Relative Abundance Resource Allocation Resource Availability Soil Fertility Specialization Species Diversity Trade-off Tropical Forest Amazonia French Guiana Peru Bombacoideae Fabaceae Inga Malvaceae Micropholis (angiosperm) Sapotaceae Swartzia |
| description |
Tropical plant diversity is extraordinarily high at both local and regional scales. Many studies have demonstrated that natural enemies maintain local diversity via negative density dependence, but we know little about how natural enemies influence beta-diversity across habitats and/or regions. One way herbivores could influence plant beta-diversity is by driving allocation trade-offs that promote habitat specialization across resource gradients. We therefore predicted that increasing resource availability should be accompanied by increasing herbivory rates and decreasing plant allocation to defense. Second, relative abundances within plant lineages are predicted to reflect patterns of habitat specialization and allocation tradeoffs. A phylogenetic context is vital not only to compare homologous plant traits (including defense strategies) across habitat types, but also to connect evolutionary trade-offs to patterns of species diversification in each phylogenetic lineage. We tested these predictions for trees in white-sand, clay terra firme, and seasonally flooded forests in Peru and French Guiana that represent the range of soil fertility, forest structure, and floristic compositions found throughout the Amazon region. We established 74 0.5-ha plots in these habitats and sampled all trees. Within 12 representative plots we marked newly expanding leaves of 394 saplings representing 68 species, including the most abundant species in each plot in addition to species from five focal lineages: Swartzia and Inga (Fabaceae), Protieae (Burseracaeae), Bombacoideae (Malvaceae), and Micropholis (Sapotaceae). We measured total leaf production rates for each sapling and calculated relative herbivory impact as the ratio between herbivory rate and leaf production rate. Herbivory rates averaged 2.1% per month, did not correlate with leaf production rate, and were similar across habitats. Relative herbivore impacts exceeded leaf production rates for most species. Leaf production rate averaged 2.8%, was significantly higher in seasonally flooded forests than the other two habitats, and exhibited significant correlations with specific leaf area. Species with high herbivory rates exhibited significantly lower relative abundances in terra firme forests. Overall, focal species within lineages present contrasting patterns regarding their herbivory rates and leaf production rate within habitats. These results highlight why a lineage-based approach is necessary when attempting to connect hypotheses regarding evolutionary trade-offs to community assembly patterns. © 2012 by the Ecological Society of America. |
| format |
Artigo |
| author |
Lamarre, Greg P.A. |
| author2 |
Baraloto, Christopher Fortunel, Claire Dávila, Nállarett Mesones, Italo Rios, Julio Grandez Ríos, Marcos Valderrama, Elvis Pilco, Magno Vásquez Van Antwerp Fine, Paul |
| author2Str |
Baraloto, Christopher Fortunel, Claire Dávila, Nállarett Mesones, Italo Rios, Julio Grandez Ríos, Marcos Valderrama, Elvis Pilco, Magno Vásquez Van Antwerp Fine, Paul |
| title |
Herbivory, growth rates, and habitat specialization in tropical tree lineages: Implications for Amazonian beta-diversity |
| title_short |
Herbivory, growth rates, and habitat specialization in tropical tree lineages: Implications for Amazonian beta-diversity |
| title_full |
Herbivory, growth rates, and habitat specialization in tropical tree lineages: Implications for Amazonian beta-diversity |
| title_fullStr |
Herbivory, growth rates, and habitat specialization in tropical tree lineages: Implications for Amazonian beta-diversity |
| title_full_unstemmed |
Herbivory, growth rates, and habitat specialization in tropical tree lineages: Implications for Amazonian beta-diversity |
| title_sort |
herbivory, growth rates, and habitat specialization in tropical tree lineages: implications for amazonian beta-diversity |
| publisher |
Ecology |
| publishDate |
2020 |
| url |
https://repositorio.inpa.gov.br/handle/1/18015 |
| _version_ |
1787144552669249536 |
| score |
11.755432 |