Sentence examples for mean trophic level from inspiring English sources

An increase in mean trophic level near the sewage outlet following improvements in water quality indicated that wastewater treatment had another important effect.

We found that Mean Trophic Level (MTL) has declined at a rate of 0.08 trophic levels (TL) per decade, suggesting a 'fishing down the marine food web' process in Brunei waters.

Studying the long-term effects of fishing on the marine mean trophic level (MTL) is very important for understanding the status of marine ecosystems, and it will help in the design of appropriate conservation management strategies.

The carrying capacity of marine shelf ecosystems in southern Brazil for harvestable species is analyzed by (1) quantifying the amount of available primary production appropriated by fisheries catches, (2) evaluating the trend in the mean trophic level of fisheries, and (3) simulating the ecosystem effects of "fishing down the food web" in an intensively exploited shelf region.

Targets can vary widely in scale; metrics such total biomass, catch, and mean trophic level are used to evaluate sustainability targets for ecosystem management (8), whereas changes in recruitment and abundance are used to construct indicators for managing specific fish stocks (9).

The mean trophic level substantially did not change (Table S8).

Table 1 shows scientific name, trophic level, sex, and mean body weight for the species of fish samples.

Spiders were enriched in δN in all cases over those in carabid beetles, and below the falls on the Neekas this constituted a mean difference greater than a single trophic level.

The trophic level correction factor was thus calculated by subtracting mean δN values in hemlock above the falls, (Mathewson & Reimchen unpublished data: Clatse mean δN = -1.55‰; Neekas mean δN = -3.93‰) from mean δN values in each invertebrate group above the falls on each watershed.

We repeated this for δ15N and δ2H, respectively, adding to mixtures the mean trophic enrichment Δtot observed in our study and mean contributions of dietary water accounting for different trophic levels of end members (as described for Supplementary Equation 11).

We also recommend using low trophic level farmed fish to feed higher trophic level fish.