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Population Dynamics of Polyploids: Testing the Mechanisms of Grassland Expansions in Madagascar

Descripción del proyecto

La conservación de los herbazales de Madagascar

No se sabe cuánto se han expandido y contraído los herbazales a causa de los ciclos climáticos naturales en oposición a las prácticas agrícolas modernas. El proyecto MADGRASS, financiado con fondos europeos, subsanará esta laguna mediante un estudio de los herbazales del centro de Madagascar. Se emplearán técnicas genómicas y bioinformáticas para comprobar hipótesis demográficas que identifiquen cuándo se expandieron y contrajeron los herbazales, las estructuras de las poblaciones y el flujo genético entre poblaciones. También se emplearán avances en materia de análisis de especies poliploides. Los resultados identificarán qué herbazales de Madagascar deben protegerse y a cuáles se deberá retirar la condición de protegidos para su aprovechamiento social y comercial.

Objetivo

As a consequence of anthropogenic climate change, it has been hypothesized that human-mediated deforestation degraded closed-canopy forest into grasslands dominated by fire- and grazing-resistant grasses. There is accumulating evidence, however, that tropical grasslands are natural biomes with origins that predate human activities. The extent to which grasslands have expanded and contracted in response to natural climate cycles versus more recent agricultural practices remains an open question and is the motivation for the proposed research. MADGRASS focuses on the grasslands of central Madagascar, because identifying ancient grasslands and protecting them is of urgent conservation interest. Population genomic methods and novel bioinformatic approaches will be used to test demographic hypotheses that will identify the timing of grassland expansions and contractions, population structure, and gene flow between populations. Research goals are made possible by recent advances in the analysis of polyploid species, which will be implemented through MADGRASS. There are direct conservation policy outcomes expected from MADGRASS. Currently, tree-planting programs are attempting to re-forest the grasslands of central Madagascar. These programs often include invasive tree species that grow quickly and require more water than is available, which can unintentionally lead to increased frequency and intensity of fires and overall detrimental outcomes. We will identify the range of Madagascar’s natural grasslands that should be protected. Results will also be used to identify which grasslands should be released from protected status for community and commercial use, building respect and trust with local Malagasy people. All aspects of the proposed research will be conducted in close collaboration with Malagasy colleagues and include specific outreach activities for both local communities in Madagascar and broader scientific and lay groups.

Ámbito científico (EuroSciVoc)

CORDIS clasifica los proyectos con EuroSciVoc, una taxonomía plurilingüe de ámbitos científicos, mediante un proceso semiautomático basado en técnicas de procesamiento del lenguaje natural.

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Coordinador

ROYAL BOTANIC GARDENS KEW
Aportación neta de la UEn
€ 224 933,76
Coste total
€ 224 933,76