@Article{FrancisquiniLiPeRoFrCo:2014:ImInMo,
author = "Francisquini, Mariah I. and Lima, Claudia More and Pessenda, Luiz
C. R. and Rossetti, Dilce de F{\'a}tima and Fran{\c{c}}a, Marlon
C. and Cohen, Marcelo Cancela Lisboa",
affiliation = "{Universidade de S{\~a}o Paulo (USP)} and {Universidade de
S{\~a}o Paulo (USP)} and {Universidade de S{\~a}o Paulo (USP)}
and {Instituto Nacional de Pesquisas Espaciais (INPE)} and
{Instituto Federal do Par{\'a}} and {Universidade Federal do
Par{\'a} (UFPA)}",
title = "Relation between carbon isotopes of plants and soils on
Maraj{\'o} Island, a large tropical island: Implications for
interpretation of modern and past vegetation dynamics in the
Amazon region",
journal = "Palaeogeography, Palaeoclimatology, Palaeoecology",
year = "2014",
volume = "415",
pages = "91--104",
keywords = "Ilha do Maraj{\'o}, paleovegeta{\c{c}}{\~a}o, solos,
is{\'o}topo de carbono.",
abstract = "We assess the relation between the contrasting vegetation types of
rainforest, open savanna and wooded savanna coexisting in close
contact on Maraj{\'o} Island at the mouth of the Amazon River.
Floristic and carbon isotopic characterizations of modern plants
were combined with organic matter carbon isotope and grain size
records of soil to characterize vegetation evolution at six
locations on southeastern and northeastern Maraj{\'o} Island and
its relations to climate changes since the late Pleistocene. C3
plants contribute 100% of the biomass in the rainforest on
post-Barreiras sediments (site 1). No significant vegetation
changes are evident in these places since at least ~7860 cal yr
B.P. Rainforests on paleochannels (sites 4 and 6) are protected
from flooding by slightly elevated sandy levee and have flora very
similar to site 1. These forests were formed since the early-mid
Holocene after channel abandonment. C3 grasses are predominant in
open savanna areas (sites 4, 5 and 6), with less representation in
wooded savannas (sites 2 and 3). However, C4 grasses, despite
having fewer species, constitute significant biomass in the wooded
(~60%) and open savanna vegetation areas, especially during the
dry season. The reconstructions of past vegetation together with
the distributions of modern vegetation allow prediction that
climate changes to drier conditions can significantly influence
the future Maraj{\'o} Island landscape, likely enabling expansion
of C4 plants in the flooding zone and of trees in the
rainforests.",
doi = "10.1016/j.palaeo.2014.03.032",
url = "http://dx.doi.org/10.1016/j.palaeo.2014.03.032",
issn = "0031-0182",
label = "lattes: 0307721738107549 4 FrancisquiniLiPeRoFrCo:2014:ImInMo",
language = "en",
urlaccessdate = "04 maio 2024"
}