Microplastic (MP) is an environmental burden and enters food webs via ingestion by macrofauna, including isopods ( Porcellio scaber ) in terrestrial ecosystems. Isopods represent ubiquitously abundant, ecologically important detritivores. However, MP‐polymer specific effects on the host and its gut microbiota are unknown. We tested the hypothesis that biodegradable (polylactic acid [PLA]) and non‐biodegradable (polyethylene te...

Environmental microplastic (MP) is ubiquitous in aquatic and terrestrial ecosystems providing artificial habitats for microbes. Mechanisms of MP colonization, MP polymer impacts, and effects on soil microbiomes are largely unknown in terrestrial systems. Therefore, we experimentally tested the hypothesis that MP polymer type is an important deterministic factor affecting MP community assembly by incubating common MP polymer ty...

Summary Ammonia oxidising bacteria (AOB) are thought to emit more nitrous oxide (N 2 O) than ammonia oxidising archaea (AOA), due to their higher N 2 O yield under oxic conditions and denitrification in response to oxygen (O 2 ) limitation. We determined the kinetics of growth and turnover of nitric oxide (NO) and N 2 O at low cell densities of Nitrosomonas europaea (AOB) and Nitrosopumilus maritimus (AOA) during gradual deple...

This study examined fertilization rates, survival and early life‐trait differences of pure farm, wild and first generation ( F1 ) hybrid origin embryos after crossing farm and wild Atlantic salmon Salmo salar . Results show that despite a trend towards higher in vitro fertilization success for wild females, differences in fertilization success in river water are not significantly different among crosses. In a hatchery environm...

Atlantic salmon Salmo salar smolts ( n = 181) from two rivers were surgically implanted with acoustic transmitters and released to determine migration route, residency time and survival in a 50 km long estuarine fjord located on the south coast of Newfoundland, Canada. Data obtained from automated receivers placed throughout the Bay d’Espoir fjord indicated that migrating smolts used different routes to reach the outer areas o...