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| MUSTIN, K.; CARVALHO, W. D.; HILÁRIO, R. R.; COSTA-NETO, S. V.; SILVA, C. R.; VASCONCELOS, I. M.; CASTRO, I. J.; EILERS, V.; KAUANO, E. E.; MENDES-JÚNIOR, R. N. G.; FUNI, C.; FEARNSIDE. P. M.; SILVA, J. M. C.; EULER, A. M. C.; TOLEDO, J. J.. |
| An Amazonian savanna in northern Brazil known as the Cerrado of Amapá is under imminent threat from poor land-use planning, the expansion of large-scale agriculture and other anthropogenic pressures. These savannas house a rich and unique flora and fauna, including endemic plants and animals. However, the area remains under-sampled for most taxa, and better sampling may uncover new species. We estimate that only ~9.16% of these habitats have any kind of protection, and legislative changes threaten to further weaken or remove this protection. Here we present the status of knowledge concerning the biodiversity of the Cerrado of Amapá, its conservation status, and the main threats to the conservation of this Amazonian savanna. To secure the future of these... |
| Tipo: Artigo de periódico |
Palavras-chave: Conservation.; Cerrado; Vegetação; Conservação; Vegetation.. |
| Ano: 2017 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1078258 |
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| CUNHA, A. C. da; MUSTIN, K.; SANTOS, E. S. dos; SANTOS, E. W. G. dos; GUEDES, M. C.; CUNHA, H. F. A.; ROSMAN, P. C. C.; STERNBERG, L. da S. L.. |
| The transport of seeds by water, i.e. hydrochory, is a key mechanism of long-distance dispersal constrained by the attributes of the seed and hydrodynamics. In the freshwater Amazon estuary, river hydrodynamics are influenced by seasonal changes in precipitation and tidal cycles. It is not known to what extent a hydrodynamic model may be able to predict seed dispersal. Here we parameterised a simulation model (SisBaHia) to estimate maximum seed dispersal distances per tidal cycle, which were then compared with data from in situ seed dispersal experiments. The study was conducted along a 27-km stretch of a tributary of the Amazon estuary, using the seeds of a widely distributed riparian tree?Carapa guianensis (Meliaceae). Based on the simulation model,... |
| Tipo: Artigo de periódico |
Palavras-chave: Long-distance dispersal; Modelling; Simulation; Tidal river; Carapa guianensis. |
| Ano: 2017 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1086024 |
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| HILÁRIO, R. R.; TOLEDO, J. J. de; MUSTIN, K.; CASTRO, I. J.; COSTA-NETO, S. V.; KAUANO, E. E.; EILERS, V.; VASCONCELOS, I. M.; MENDES-JÚNIOR, R. N.; FUNI, C.; FEARNSIDE, P. M.; SILVA, J. M. C.; EULER, A. M. C.; CARVALHO, W. D. de. |
| Although Amapá is the most protected Brazilian state, the same level of protection does not extend to its savannas. These are currently suffering increased pressure from threats including large-scale agriculture, particularly the expansion of soybean plantations. In September 2016, the Government of Amapá presented a zoning proposal (Zoneamento Socioambiental do Cerrado [ZSC]) that reserves most of the savannas for agricultural activities. Here, we outline how the methodology employed is flawed because it does not include fauna surveys, evaluations of ecosystem services or an assessment of the social importance of the savannas. The ZSC authors admit that, contrary to Brazilian legislation, the zoning was carried out with the single intention of increasing... |
| Tipo: Artigo de periódico |
Palavras-chave: Soybean plantation; Plantação de soja; Land use policy; Politica de uso da terra; Conservation; Savanna; Soybean.; Cerrado; Agricultura; Biodiversidade; Conservação; Soja; Agriculture; Biodiversity.. |
| Ano: 2017 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1078302 |
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