Data/hora: 01/06/2024 06:02:51

Biblioteca(s): | Embrapa Amazônia Oriental.
Data corrente: | 06/12/2023
Data da última atualização: | 06/12/2023
Autoria: | HAWES, J. E.; VIEIRA, I. C. G.; MAGNAGO, L. F. S.; BERENGUER, E.; FERREIRA, J. N.; ARAGÃO, L. E. O. C.; CARDOSO, A.; LEES, A. C.; LENNOX, G. D.; TOBIAS, J. A; WALDRON, A.; BARLOW, J.
Afiliação: | JOSEPH E. HAWES, Anglia Ruskin University / MPEG; IMA C. G. VIEIRA, MPEG; LUIZ F. S. MAGNAGO, Universidade Federal do Sul da Bahia; ERIKA BERENGUER, University of Oxford / Lancaster University; JOICE NUNES FERREIRA, CPATU; LUIZ E. O. C. ARAGÃO, University of Exeter / INPE; AMANDA CARDOSO, COLABORADORA CPATU; ALEXANDER C. LEES, Manchester Metropolitan University / Cornell University; GARETH D. LENNOX, Lancaster University; JOSEPH A. TOBIAS, Imperial College London; ANTHONY WALDRON, National University of Singapore; JOS BARLOW, MPEG / Lancaster University / UFLA.
Título: | A large-scale assessment of plant dispersal mode and seed traits across human-modified Amazonian forests.
Ano de publicação: | 2020
Fonte/Imprenta: | Journal of Ecology, v. 108, n. 4, p. 1373-1385, 2020.
DOI: | https://doi.org/10.1111/1365-2745.13358
Idioma: | Inglês
Conteúdo: | 1. Quantifying the impact of habitat disturbance on ecosystem function is critical to understanding and predicting the future of tropical forests. Many studies have examined post-disturbance changes in animal traits related to mutualistic interac-tions with plants, but the effect of disturbance on plant traits in diverse forests has received much less attention.2. Focusing on two study regions in the eastern Brazilian Amazon, we used a trait-based approach to examine how seed dispersal functionality within tropical plant communities changes across a landscape-scale gradient of human modification, including both regenerating secondary forests and primary forests disturbed by burning and selective logging.3. Surveys of 230 forest plots recorded 26,533 live stems from 846 tree species. Using herbarium material and literature, we compiled trait information for each tree species, focusing on dispersal mode and seed size.4. Disturbance reduced tree diversity and increased the proportion of lower wood density and small-seeded tree species in study plots. Disturbance also increased the proportion of stems with seeds that are ingested by animals and reduced those dispersed by other mechanisms (e.g. wind). Older secondary forests had function-ally similar plant communities to the most heavily disturbed primary forests. Mean seed size and wood density per plot were positively correlated for plant species with seeds ingested by animals.5. Synthesis. Anthropogenic disturbance has major effects on the seed traits of tree communities, with implications for mutualistic interactions with animals. The im-portant role of animal-mediated seed dispersal in disturbed and recovering for-ests highlights the need to avoid defaunation or promote faunal recovery. The changes in mean seed width suggest larger vertebrates hold especially important functional roles in these human-modified forests. Monitoring fruit and seed traits can provide a valuable indicator of ecosystem condition, emphasizing the impor-tance of developing a comprehensive plant traits database for the Amazon and other biomes
Thesagro: | Floresta; Floresta Secundaria.
Thesaurus Nal: | Forest fires; Forest regeneration; Secondary forests.
Categoria do assunto: | K Ciência Florestal e Produtos de Origem Vegetal
Registro original: | Embrapa Amazônia Oriental (CPATU)
Exemplares: | CPATU - (59249-1) - UPC - AP - DD -  -  -  - DIS