COMPOSIÇÃO FLORÍSTICA E FITOSSOCIOLOGIA DO COMPONENTE ARBÓREO DAS FLORESTAS CILIARES DA BACIA DO RIO TIBAGI. 1. FAZENDA DORALICE - IBIPORÃ, PR

O presente trabalho trata do estudo florístico e fitossociológico de uma área da Fazenda Doralice, muni­cípio de lbiporã, PR. (23°16'8 e 51°01'W e 480 m de altitude). O clima apresentado é do tipo Cfa e o solo do tipo TRe3 - terra roxa estruturada eutrófica. O levanta­ mento foi realizado em área de 1 ha (10.000 m2), dividida em 100 parcelas de 10 x 10 m cada, demarcadas a partir da margem do rio. O inventário florístico registrou 1396 indivíduos reunidos em 39 famílias, 73 gêneros e 105 espécies. O índice de diversidade encontrado (SHANNON-WEAVER)foideH'=3,6.Sorocea bonpiandíí foi a espécie que atingiu o maior valor de importância (IVI), alcançando o maior valor de densidade (130 indi­ víduos/ha) e freqüência (comparecimento em 57 parce­ las), apesar de baixa dominância (2,24%). Gal/esia integrifolla alcançou o mais alto valor de dominância (10,58%). A família mais importante da comunidade é Me/iaceae, a qual alcançou os primeiros lugares em IVI, IVC, DR e FR e segundo lugar em DoR. Myrtaceae apresentou o maior número de espécies (14)

NEOTROPICAL XENARTHRANS: a data set of occurrence of xenarthran species in the Neotropics

Xenarthrans – anteaters, sloths, and armadillos – have essential functions for ecosystem maintenance, such as insect control and nutrient cycling, playing key roles as ecosystem engineers. Because of habitat loss and fragmentation, hunting pressure, and conflicts with 24 domestic dogs, these species have been threatened locally, regionally, or even across their full distribution ranges. The Neotropics harbor 21 species of armadillos, ten anteaters, and six sloths. Our dataset includes the families Chlamyphoridae (13), Dasypodidae (7), Myrmecophagidae (3), Bradypodidae (4), and Megalonychidae (2). We have no occurrence data on Dasypus pilosus (Dasypodidae). Regarding Cyclopedidae, until recently, only one species was recognized, but new genetic studies have revealed that the group is represented by seven species. In this data-paper, we compiled a total of 42,528 records of 31 species, represented by occurrence and quantitative data, totaling 24,847 unique georeferenced records. The geographic range is from the south of the USA, Mexico, and Caribbean countries at the northern portion of the Neotropics, to its austral distribution in Argentina, Paraguay, Chile, and Uruguay. Regarding anteaters, Myrmecophaga tridactyla has the most records (n=5,941), and Cyclopes sp. has the fewest (n=240). The armadillo species with the most data is Dasypus novemcinctus (n=11,588), and the least recorded for Calyptophractus retusus (n=33). With regards to sloth species, Bradypus variegatus has the most records (n=962), and Bradypus pygmaeus has the fewest (n=12). Our main objective with Neotropical Xenarthrans is to make occurrence and quantitative data available to facilitate more ecological research, particularly if we integrate the xenarthran data with other datasets of Neotropical Series which will become available very soon (i.e. Neotropical Carnivores, Neotropical Invasive Mammals, and Neotropical Hunters and Dogs). Therefore, studies on trophic cascades, hunting pressure, habitat loss, fragmentation effects, species invasion, and climate change effects will be possible with the Neotropical Xenarthrans dataset