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| Open AccessDust inputs and bacteria influence dissolved organic matter in clear alpine lakes
Dissolved organic matter, the main form of aquatic organic carbon, supports the aquatic food web and regulates light penetration in lakes. This study probes the main influences on the optical properties of dissolved organic matter in a global dataset of alpine and remote lakes revealing latitudinal trends.
- N. Mladenov
- , R. Sommaruga
- & I. Reche
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Identification and characterization of a multidomain hyperthermophilic cellulase from an archaeal enrichment
Archaea are microorganisms that use a wide range of carbon and energy sources. Grahamet al. describe an archaeal consortium that can grow at temperatures above 90 °C using crystalline cellulose as a carbon source, with potential applications in enzymatic degradation under extreme conditions.
- Joel E. Graham
- , Melinda E. Clark
- & Frank T. Robb
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Coastal pollution limits pelagic larval dispersal
Storm water runoff and wastewater effluent are discharged into oceans, but the full ecological effects of these discharges are unknown. Here, the authors examine the population structure of a marine organism, the bat star, and show that these discharges alter the genetic structure and larval dispersal of this species.
- Jonathan B. Puritz
- & Robert J. Toonen
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Historical land use change has lowered terrestrial silica mobilization
Continental export of silicon to the coast is linked to ocean carbon sinks, but terrestrial silicon fluxes have not been quantified. Here, human deforestation and cultivation of the landscape are shown to be the most important factors in silicon mobilization in temperate European watersheds.
- Eric Struyf
- , Adriaan Smis
- & Patrick Meire
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Article
| Open AccessSecond-generation environmental sequencing unmasks marine metazoan biodiversity
Recent developments in sequencing technologies have provided the opportunity to investigate the biodiversity of ecosystems. Such a metagenomic approach, combined with taxon clustering, is used here to demonstrate that the species richness of a marine community in Scotland is much greater than anticipated.
- Vera G. Fonseca
- , Gary R. Carvalho
- & Simon Creer