Drought and nitrogen addition: How they jointly shape interactions among plant, arthropod, and soil nematode functional groups in temperate grasslands

Feixue Yu, Inner Mongolia University, discusses her article: Nitrogen addition weakens drought-driven coupling between plant, arthropod, and soil nematode functional groups The concurrent increase in drought and atmospheric nitrogen deposition has profoundly impacted multitrophic biodiversity and ecosystem functioning in grasslands. Nitrogen enrichment is frequently assumed to alleviate drought stress by stimulating plant growth, but this…

Asymmetric adaptation drives rapid evolution as an invasive plant expands northward

Rui Wang, Institute of Plant Protection of the Chinese Academy of Agricultural Sciences, discusses their article: Asymmetric adaptation across a core–periphery climatic gradient drives rapid phenological evolution and range expansion in an invasive plant When we think about plant invasions, we often picture species spreading quickly, competing with native plants, and causing problems for ecosystems…

Life on earth mounds: What controls biodiversity on natural islands in hyperseasonal tropical savannas?

Henrique Augusto Mews, Universidade Federal de Rondonópolis in Brazil, discusses his article: Unravelling the drivers of island species richness in tropical savannas Many landscapes contain “island-like” habitats: patches of suitable conditions surrounded by an inhospitable matrix. How species diversity is regulated in these systems remains surprisingly poorly understood. In tropical savannas, such as the Cerrado…

How are plant and soil microbial diversity linked across mountain forests?

Jiayun Zou, Technical University of Munich, discusses his article: Biodiversity associations between aboveground and belowground communities in mountain forests across different climatic regions How tightly are the biological communities above and below the forest floor connected? In mountain forests, those associations remain poorly understood. While plants and soil microbes interact intimately, such as through symbioses…

Searching for early warning signals of dieback in Mediterranean forests

Álvaro Gaytán and Lorena Gómez-Aparicio, Institute of Natural Resources and Agrobiology of Seville (IRNAS-CSIC), discuss their article: Evidence for linkages between the root elementome and oak decline in Mediterranean systems invaded by soil-borne pathogens Mediterranean oak woodlands are among the most iconic ecosystems of southern Europe. Yet many of these forests are under increasing pressure from…

What drives tree recruitment at alpine tree lines?

Valentin Graf, Senckenberg Biodiversity and Climate Research Centre in Frankfurt, discusses his article: Relative importance of range position, seed size, and genetic diversity for tree recruitment at alpine range edges Climate change is rapidly altering ecosystems, pushing many species to adapt or move to cooler environments. In mountains, this often means shifting to higher elevations,…

Subordinate grasses invest more underground during drought — and it makes all the difference

Alberto Canarini (University of Bologna, Italy), Pierre Mariotte (Agroscope, Switzerland), Yolima Carrillo (Western Sydney University, Australia), Raúl Ochoa-Hueso (University of Cádiz, Spain), and Barbara Drigo (Adelaide University and CRC SAAFE, Australia) discuss their article: Enhanced belowground functioning is associated with higher plant resistance against drought: implications for ecosystem functions A long-standing puzzle in grassland ecology…