Vegetation and pollen rain relationship from the tropical Atlantic rain forest in Southern Brazil

Behling, Hermann; Negrelle, Raquel Rejane Bonato

doi:10.1590/s1516-89132006000500013

Cited by 28 publications

(21 citation statements)

References 4 publications

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“…Behling and Negrelle (2006) reported the pollination of a single female A. angustifolia tree inside a plot of tropical Atlantic forest in Santa Catarina State. In this forest, the pollen rain of A. angustifolia averaged around 32 cm -2 year -1 .…”

Section: Gene Dispersal and The Need Of Population Connectivitymentioning

confidence: 99%

Integrating approaches towards the conservation of forest genetic resources: a case study of Araucaria angustifolia

et al. 2009

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In the past years the conservation of forest genetic resources has been widely recognized because of the risk of adverse effects associated with global changes in the environment. Since little effort has been made towards conservation of these resources, the assessment and the integration of information and knowledge so far generated are valuable tools in order to promote their conservation. In the present work the Brazilian conifer Araucaria angustifolia was used as a case study, integrating information, published between 1980 and 2007, about genetics, biotechnology, palaeobotany, and archeology. These studies were interpreted towards the conservation needs and strategies of the species germplasm. The main conclusions for the conservation of A. angustifolia genetic resources are: (1) despite the reduction of genetic diversity by unsustainable forest exploitation, the genetic system of A. angustifolia seems to be efficient to protect this species against rapid losses of its genetic diversity; (2) conservation measures starting now may be efficient, since the genetic structures of existing populations is more largely influenced by the past evolutionary process than by human disturbance occurred in the last century; (3) there are opportunities to save the genetic resources of the species, if simple measures are taken to safeguard the continued existence of the few remaining araucaria forests. Emerged as a general conclusion that the use of sound scientific arguments supported by different areas of the science could be a very powerful instrument in persuading decision-makers, also by governments, taking into account forest genetic resources as a primary issue for the future.

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Section: Gene Dispersal and The Need Of Population Connectivitymentioning

confidence: 99%

Integrating approaches towards the conservation of forest genetic resources: a case study of Araucaria angustifolia

et al. 2009

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“…The amount of Araucaria pollen, 3% of the total pollen sum, further clearly indicates that populations of Araucaria trees occurred in the study area. Long distance transport of single pollen grains from the highland, which is about 130 km distance to the north to the study site, is possible, but the amount of pollen present would then be much lower, as shown by the pollen rain study in the Atlantic lowland of northeastern Santa Catarina State (Behling and Negrelle 2006). A stronger change is evident by the marked increase of Araucaria angustilfolia pollen (up to 16% in zone SM-II) at around cal AD 1650.…”

Section: Interpretation and Discussionmentioning

confidence: 91%

Late Holocene Vegetation History and Early Evidence of Araucaria angustifolia in Caçapava do Sul in the Lowland Region of Rio Grande do Sul State, Southern Brazil

Behling

Verissimo²,

Bauermann

et al. 2016

Braz. arch. biol. technol.

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“…Ocotea pollen grains are very fragile (Behling & Negrelle 2006) and Erythrina crista-galli is pollinated by birds and so their flowers have stamens hidden deep in the corolla tube (Hidalgo 2008), two facts that make that these grains are not usually found in pollen assemblages. However, this does not generate problems concerning the correct identification of riparian forest pollen assemblages, both qualitatively (Fig.…”

Section: Forestsmentioning

confidence: 99%

Pollen and spores from surface samples in the campos region of Uruguay and their paleoecological implications

Mourelle¹,

Prieto

2016

Acta Bot. Bras.

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In this study we describe and illustrate pollen and spores that have been identifi ed as signifi cant in modern and fossil samples from the campos region of Uruguay. We provide new information about modern pollen assemblages and their relationship to the vegetation types of this region. We discuss the taxonomic limitations of pollen and spores and their representation in both modern and fossil samples. We highlight the importance of identifying both silent and key indicator taxa for making accurate paleoecological interpretations. We also emphasize the importance of knowing the pollination strategies of parental plants because many of them are zoophilous, and so small changes in the proportions of their pollen grains in fossil assemblages could refl ect important changes in vegetation. Th is study presents a practical approach to paleoecological research, which not only produces robust results in studies of the campos region, but can be applied to other grassland ecosystems, including those in temperate regions.

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Vegetation and pollen rain relationship from the tropical Atlantic rain forest in Southern Brazil

Abstract: ABSTRACT

Cited by 28 publications

References 4 publications

Integrating approaches towards the conservation of forest genetic resources: a case study of Araucaria angustifolia

Integrating approaches towards the conservation of forest genetic resources: a case study of Araucaria angustifolia

Late Holocene Vegetation History and Early Evidence of Araucaria angustifolia in Caçapava do Sul in the Lowland Region of Rio Grande do Sul State, Southern Brazil

Pollen and spores from surface samples in the campos region of Uruguay and their paleoecological implications

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