Publications by authors named "J N Kobelt"

The recent collapse of predatory sunflower sea stars () owing to sea star wasting disease (SSWD) is hypothesized to have contributed to proliferation of sea urchin barrens and losses of kelp forests on the North American west coast. We used experiments and a model to test whether restored populations may help recover kelp forests through their consumption of nutritionally poor purple sea urchins () typical of barrens. consumed 0.

View Article and Find Full Text PDF
Article Synopsis
  • Species that move north due to human-induced changes likely face less diverse communities, which might lead to less competition and predation, allowing them more opportunities in their new habitats.
  • The study focused on oak gall wasps, particularly Neuroterus saltatorius, across a range from northern California to Vancouver Island, identifying 23 types of wasps and examining how their diversity followed a latitudinal gradient.
  • Results showed that diversity of gall wasps decreased at higher latitudes, with fewer interactions observed among wasps in northern areas, suggesting that these low diversity settings could provide a competitive advantage for expanding species.
View Article and Find Full Text PDF

Four mesophilic, neutrophilic, and aerobic marine ammonia-oxidizing archaea, designated strains SCM1, HCA1, HCE1 and PS0, were isolated from a tropical marine fish tank, dimly lit deep coastal waters, the lower euphotic zone of coastal waters, and near-surface sediment in the Puget Sound estuary, respectively. Cells are straight or slightly curved small rods, 0.15-0.

View Article and Find Full Text PDF