Lichen: from genome to ecosystem in a changing world 2B-P (2B-P27) Submission ID: <strong>IAL</strong>0127-00001 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: <strong>IAL</strong>0127-00002 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. 130
The 7 th International Association for Lichenology <strong>Symposium</strong> 2012 (2B-P29) Submission ID: <strong>IAL</strong>0127-00003 LICHENS FROM SERRA DE ITABAIANA NATIONAL PARK, AN ATLANTIC RAINFOREST RELICT IN SERGIPE, BRAZIL Cáceres M. E. 1 , Mendonca C. O. 1 , Mota D. A. 1 , Dos Santos M. O. 1 , Lücking R. 2 1 Biociencias, Universidade Federal De Sergipe, Itabaiana, Sergipe, Brazil 2 Botany, The Field Museum, Chicago, United States The Atlantic rainforest in Sergipe, the smallest Brazilian state with an area of ca. 21,910 Km 2 , is almost nonexistent. The devastation of the natural areas has been taking place for a long time and the current vegetation cover (only 0,1% of the original area) is restrict to very small forest remnants, like islands surrounded by sugarcane plantations and pastures. The Serra de Itabaiana National Park, located 50 km from the coast and the state capital, Aracaju, is the most important Atlantic rainfores remnant in Sergipe. Studies on the lichenized fungi from Serra de Itabaiana have been incomplete so far. This ongoing research project on the Serra de Itabaiana, a very unique vegetation, aims to estimate the lichen diversity present on the area and thus reinforce the current conservation policies for this atlantic rainforest relict. The lichens have been collected during five field trips which took place in October 2002, then recently in January, April, May, and December 2010, using opportunistic and quantitative sampling protocols. 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 300 samples have been analyzed so far, and ca. 65 species are here reported, of which 11 are new records for the state of Sergipe and one a new records for Brazil: Chapsa platycarpoides (Tuck.) Breuss & Lücking. 131 2B-P
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