Germination and vigor of Dimorphandra mollis benth. seeds under different temperatures and substrates Germinação e vigor de sementes de Dimorphandra mollis benth. sob diferentes temperaturas e substratos

The Dimorphandra mollis Benth. - Caesalpiniaceae is a native forest species coming from the Cerrado and Caatinga due to its economical and ecological use, which justifies the studies on seed germination. In this work, germinative performance of D. mollis seeds were studied in different conditions of temperature regime and substrate. The experimental delineation used was completely randomized in factorial 4 x 4 (4 substrates -sand, coconut fiber, vermiculite and paper towel; and 4 temperatures: 25, 30, 35 and 20-30ºC), with four replications of 25 seeds each. The following parameters were evaluated: seed moisture content, final germination, first germination count, germination speed index, length and dry matter weight. The best germination and vigor is obtained at 30 and 35ºC. The substrates paper towel and vermiculite allow satisfactory germinative performance of seeds, being suitable to evaluate the physiological quality of D. mollis seeds.A fava d'anta (Dimorphandra mollis Benth. - Caesalpiniaceae) é uma espécie florestal nativa, encontrada nos biomas Cerrado e Caatinga, de grande importância em função de sua utilidade econômica e ecológica, o que justifica estudos sobre a germinação das sementes. Este trabalho avaliou o desempenho germinativo de sementes de D. mollis em diferentes substratos e regimes de temperatura. O delineamento experimental adotado foi inteiramente casualizado, em arranjo fatorial 4 x 4 (quatro substratos: entre areia, pó de coco, vermiculita e papel-toalha; quatro temperaturas: 25, 30, 35, 20-30 ºC), com quatro repetições de 25 sementes cada. Foram avaliados os seguintes parâmetros: teor de água, germinação, primeira contagem da germinação, índice de velocidade de germinação, comprimento e massa seca da plântula. As temperaturas de 30 e 35 ºC proporcionaram às sementes os melhores resultados de germinação e vigor. Os substratos papel e entre vermiculita permitiram bom desempenho germinativo, mostrando-se adequados para a avaliação da qualidade fisiológica de dementes de D. mollis

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 domestic dogs, these species have been threatened locally, regionally, or even across their full distribution ranges. The Neotropics harbor 21 species of armadillos, 10 anteaters, and 6 sloths. Our data set 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 southern United States, Mexico, and Caribbean countries at the northern portion of the Neotropics, to the austral distribution in Argentina, Paraguay, Chile, and Uruguay. Regarding anteaters, Myrmecophaga tridactyla has the most records (n = 5,941), and Cyclopes sp. have the fewest (n = 240). The armadillo species with the most data is Dasypus novemcinctus (n = 11,588), and the fewest data are recorded for Calyptophractus retusus (n = 33). With regard 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 data sets of Neotropical Series that 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 data set. Please cite this data paper when using its data in publications. We also request that researchers and teachers inform us of how they are using these data