"contrasting trends" is a correct and usable phrase in written English.
You can use it to describe two or more different movements or patterns. For example: Over the past five years, the stock market has seen contrasting trends, with some sectors experiencing gains while others have seen a decline.
And fashion being fashion, there were contrasting trends.
These contrasting trends have been attributed to improved hygiene in developed nations (Bach 2002).
Sapling vulnerability to embolism shows contrasting trends with age in contaminated and non-contaminated regions.
Overall, the changes in woodland, bushland, grassland, and bareland showed contrasting trends throughout the entire study period (Table 2).
Contrasting trends can be observed in the EU15, where rail's market share has remained fairly stable, at about 15%%, since 1995.
Differences in biomolecule concentrations and respiration by horizon reveal two contrasting trends with increasing decomposition and depth: chlorophyll and respiration decrease, whereas protein, DNA and chitin increase.
However, a contrasting trend was observed with the 40-nm-thick sputtered AuNP layer (0.289 MΩ).
Marko [16] noted an apparently contrasting trend, with a significantly greater proportion of genetically structured species occurring in the lower midlittoral zone than in the upper midlittoral and higher zones.
A contrasting trend was observed for the GA catabolic gene TaGA2ox7, which was expressed at negligible levels in the endosperm, but at higher levels in the seed coat/pericarp tissues and highest in the inner layer (Fig. 6).
Interestingly, a few plants like the legume crop chickpea (Cicer arietinum) show a contrasting trend, wherein more terpene emissions have been recorded in literature than the predicted genomic potential (Marked in bold font in Table 1).
During the last decades, contrasted trends in forest fires among countries around the Mediterranean basin have been observed.
