Tree species hyperdominance and rarity in the South American Cerrado.

The South American Cerrado, the largest savanna of the Americas and the world's most tree-biodiverse, is critically endangered, with just 8% protected and more than half deforested. However, the extent of its tree diversity and abundance remains poorly quantified. Using a unique biome-wide eco-floristic dataset with 222 one-hectare plots, we estimate the Cerrado has ~1605 tree species and has extreme hyperdominance, with fewer than 2% (30 species) accounting for half of all trees.

Potential impact of land-use change on habitat quality in the distribution range of crocodile lizards in China.

The over-exploitation of land resources poses a serious threat to biodiversity on a global scale. Changes in land-use and human exploitation have had a major impact on wild populations and their habitat in China. We assessed how habitat quality has changed over time (1995-2020).

Climate Change and Dispersal Ability Jointly Affects the Future Distribution of Crocodile Lizards.

Crocodile lizards () are an endangered, 'living fossil' reptile from a monophyletic family and therefore, a high priority for conservation. We constructed climatic models to evaluate the potential impact of climate change on the distribution of crocodile lizards for the period 2000 to 2100 and determined the key environmental factors that affect the dispersal of this endangered species. For the construction of climatic models, we used 985 presence-only data points and 6 predictor variables which showed excellent performance (AUC = 0.

[Total thyroidectomy treatment of bening multinodular goiter].

Introduction: The treatment of benign multinodular goiter (BMNB) is a matter of ongoing debate in recent decades despite evidence that total thyroidectomy (TT) is associated with a significant reduction in disease recurrence and minimal morbidity in trained hands.

Objective: Determine BMNB recurrence after 10 years in 100 patients treated with TT and evaluate the technique-related complications.

Design: Prospective non randomized.