Fishing activities and other anthropogenic influences have direct and indirect effects on fish community structure.One expectation may be that with increasing fishing pressure and decreasing size selectivity of fisheries all predator populations decline and consequently fish assemblages change.Comparisons of MPAs with unprotected areas are consider
With global warming, high-temperature (HT) stress has become a major abiotic stress for crops, in particular summer maize in China.Photosynthesis is sensitive to HT.Salicylic acid (SA) and 6-benzyladenine (6-BA) can improve the adaptation of plants to various biotic and abiotic stresses.However, their contribution to maintaining photosynthetic acti
The interaction in the solar wind between two coronal mass ejections (CMEs) is investigated using numerical simulations.We show that the nature of the interaction depends on whether the CME magnetic structures interact, fifty fifty truckee but in all cases the result is an equilisation of the speed of the two CMEs.In the absence of magnetic interac