Ecological and behavioral mechanisms of density-dependent habitat expansion in a recovering African ungulate populationJustine A. Becker, Matthew Hutchinson, Arjun Potter, Shinkyu Park, Jennifer Guyton, Kyler Abernathy, Victor Americo, Ana Gledis Da Conceiçāo, Tyler Kartzinel, Luca Kuziel, Naomi Leonard, Eli Lorenzi, Nuno Martins, Johan Pansu, William Scott, Maria Stahl, Kai Torrens, Marc Stalmans, Ryan Long & Robert Pringle
Major disturbances can temporarily remove factors that otherwise constrain population abundance and distribution. During such windows of relaxed top-down and/or bottom-up control, ungulate populations can grow rapidly, eventually leading to resource depletion and density-dependent expansion into less-preferred habitats. Although many studies have explored the demographic outcomes and ecological impacts of these processes, fewer have examined the individual-level mechanisms by which they occur. We investigated these mechanisms in Gorongosa National Park, where the Mozambican Civil War...
Data from: Genetic structure and diversity of the endangered fir tree of Lebanon (Abies cilicica Carr.): implications for conservationLara Awad, Bruno Fady, Carla Khater, Anne Roig & Rachid Cheddadi
The threatened conifer Abies cilicica currently persists in Lebanon in geographically isolated forest patches. The impact of demographic and evolutionary processes on population genetic diversity and structure were assessed using 10 nuclear microsatellite loci. All remnant 15 local populations revealed a low genetic variation but a high recent effective population size. FST-based measures of population genetic differentiation revealed a low spatial genetic structure, but Bayesian analysis of population structure identified a significant Northeast-Southwest population structure....
The intestinal brush border is made of an array of microvilli that increases the membrane surface area for nutrient processing, absorption, and host defense. Studies on mammalian cultured epithelial cells uncovered some of the molecular players and physical constrains required to establish this apical specialized membrane. However, the building and maintenance of a brush border in vivo has not been investigated in detail yet. Here, we combined super-resolution imaging, transmission electron microscopy and genome editing...
Data from: Land-use legacies influence tree water-use efficiency and nitrogen dynamics in recently established European forestsRossella Guerrieri, Marta Correia, Irene Martín-Forés, Raquel Alfaro-Sánchez, Joan Pino, Arndt Hampe, Fernando Valladares & Josep Espelta
1. Forest regrowth following farmland (agriculture and pasture) abandonment has been positively associated with a number of processes including the regulation of hydrological cycling, the enhancement of soil functioning, and an increase in forest productivity and carbon (C) sequestration. Although these changes in ecosystem functioning post-farmland abandonment have been observed in multiple locations and studies, the ecophysiological basis underpinning these patterns remains unclear. Here, we examine whether increased forest expansion following pastureland abandonment is associated...
Many species of Neotropical frogs have evolved to deposit their tadpoles in small water bodies inside plant structures called phytotelmata. These pools are small enough to exclude large predators but have limited nutrients and high desiccation risk. Here, we explore phytotelm use by three common Neotropical species: Osteocephalus oophagus, an arboreal frog that periodically feeds eggs to its tadpoles; Dendrobates tinctorius, a tadpole-transporting poison frog with cannibalistic tadpoles; and Allobates femoralis, a terrestrial tadpole-transporting poison...
National Council for Scientific Research5
National Research Institute for Agriculture, Food and Environment1
University of Adelaide1
St. John's University1
Gorongosa National Park1
Wilfrid Laurier University1
University of Bologna1