Message - 7th IAL Symposium

Lichen: from genome to ecosystem in a changing world
2B-P
(2B-P27) Submission ID: IAL0127-00001
LICHENS FROM THE BRAZILIAN AMAZON: NEW TAXA AND INTERESTING RECORDS
Cáceres M. E. 1 , De Jesus L. S. 1 , Vieira T. S. 1 , Andrade A. D. 1 , Goes D. D. 1 , Lücking R. 2
1 Biociencias, Universidade Federal De Sergipe, Itabaiana, Sergipe, Brazil
2 Botany, The Field Museum, Chicago, United States
Brazil is considered one of the most diverse country in the world, comprising two major tropical forest
blocks, the Atlantic rainforest and the Amazon. The Caxiuanã National Forest, in the Brazilian Amazon, is situated
in the municipalities of Melgaço and Portel (1º37’S /51º19’W and 1º54’S/51º58’W) in the micro-region of
Furos, in the bay of Caxiuanã, between the Xingu and Tocantins rivers, occupying an area of about 300,000 ha.
The National Forest comprises several vegetation types, including non-flooded (terra firme forest with islands of
savanna-like and secondary forest) and flooded forest (várzea and igapó), being the terra firme forest the predominant
type. On the frame of a recent inventory of the lichenized mycota from the Caxiuanã National Forest, at
the Ferreira Penna Research Station, in the Brazilian Amazon, two new taxa are described as new and four new
combinations are presented: Ampliotrema megalostoma (Müll. Arg.) Cáceres & Lücking comb. nova, Graphis
brachylirellata Cáceres & Lücking spec. nova, Malmidea leucogranifera Cáceres & Lücking spec. nova, Ocellularia
conformalis (Kremp.) Cáceres & Lücking comb. nova, Redingeria microspora (Zahlbr.) Cáceres & Lücking
comb. nova, Sarcographa megistocarpa (Leight.) Cáceres & Lücking comb. nova. Type material and duplicates
will be deposited in F and URM Hebaria.
(2B-P28) Submission ID: IAL0127-00002
MANGROVE AND RESTINGA LICHENS FROM NORTHEASTERN BRAZIL
Cáceres M. E. 1 , Leite A. B. 2 , Menezes A. A. 2 , Otsuka A. Y. 3 , Dos Santos V. M. 1 , Kalb K. J. 4 , Lücking R. 5
1 Biociencias, Universidade Federal de Sergipe, Itabaiana, Sergipe, Brazil
2 Ecologia E Conservacao, Universidade Federal de Sergipe, Aracaju, Sergipe, Brazil
3 Oceanografia, Universidade Federal de Pernambuco, Recife, Pernambuco, Brazil
4 Lichenology, Lichenologisches Intitut Neumarkt, Neumarkt, Germany
5 Botany, The Field Museum, Chicago, United States
Mangroves are found in tropical and subtropical tidal areas, which include estuaries and marine shorelines.
Brazil contains approximately 26,000 km 2 of mangroves, 15% of the world’s total of 172,000 km 2 . It is possible
to understand the importance of mangroves from the functions it plays in the environmental balance. It is
known that, besides protecting the coast, this phytogeographic formation works as a climate regulator and true
pollutants filters. In the state of Sergipe, the mangroves occur in the estuaries of the major rivers: Real, Sergipe
and Vasa-Barris. In some cases, we also find Restinga vegetation associated with mangroves areas, as in the
present study. Studies on the lichen diversity on mangroves are very scarce in Brazil as a whole, and nothing
has been done until the moment in Mangroves from Northeast Brazil. This study aims to survey the diversity of lichens
in mangrove areas in the state of Sergipe and also on the surrounding Restinga vegetation. Samples were
collected in April 2010 and the first area visited is located in Santo Amaro das Brotas (10°46’43’’S/37º03’30 “W),
a municipality in eastern Sergipe, 13 km from Aracaju, the state capital. Lichens were collected using hammer,
knife, paper envelopes and GPS. Thallus morphology was examined using a Leica EZ4 dissecting microscope.
Sections of thalli and ascomata were cut by hand with a razor blade and examined with squash preparations
in water, KOH and Lugol’s solution. A total of 99 samples have been analyzed so far, and 35 species are here
reported, of which 18 are new records for the state of Sergipe and two new records for Brazil, namely Gassicurta
bellardii (Sipman) Marbach and Stirtonia alboverruca Makhija & Patw.
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