These include those associated with selection of the number and range of the size classes used [28], and the effects of sampling season (insects show substantial seasonal variation in size [5], [29]) and geographic variation (given the often substantial size clines in widespread species – see review in [5], [30]).
Soil CO2 emissions from ant mounds were significantly influenced by mound type and sampling season.
The total soil N and P concentrations did not change with sampling season.
Training dates and locations are posted February 1st of each year for the upcoming sampling season at www.sodblitz.org.org
Fish exhibited upstream/downstream variations of immunological status but strong differences were observed according to sampling season.
Turbidity was significantly higher at the WN transects (p < 0.001, n = 233), but it tended to increase throughout the sampling season within and outside the FB.
Arthropod community was heavily affected by seasonal variations in climatic conditions in high and low polluted soils, showing for the same soil different responses dependent on the sampling season.
Compared with control marsh soils (0.034 0.045 mg m−2 h−1), N2O emissions from ant mounds (0.007 0.13 mg m−2 h−1) were influenced more by sampling season.
After biological treatment, the concentrations of E2, E3 and NP decreased remarkably, while E1, EE2 and BPA exhibited varying removal efficiencies that depended on the specific treatment process and sampling season.
Consideration of all analyses suggests that when resources are limited to a single sampling season, fall and spring mean values for concentrations and ratios seem to best represent the annual average in this city.
Mirroring algal heterogeneity, the minimum required sample size for in situ biomass measurement were greater in blooming season and sandy bottom, suggesting that sampling design for spatio-temporal mapping of MPB should consider the sampling season and/or abiotic and biotic features of study area.
