The phylogenetic analyses based on molecular data demonstrate that all "micronetine" species of a desmitracheate system form a monophyly. Macrargus Dahl, 1886 is a "micronetine" genus, the species of which have a haplotracheate system in general, while Macrargus alpinus Li & Zhu, 1993 was found to have a desmitracheate system; this makes its generic placement problematic. According to the resul...

Stressful environments may enhance the occurrence of facilitative interspecific interactions between plants. In several regions, Zostera marina occurs in mixed assemblages. However, the potential effects of plant diversity on stress responses and stability properties of Z. marina are poorly understood. We investigated the resistance and recovery of Z. marina subjected to shading (1 mo) in a fie...