Fractional trophic levels (i.e., trophic positions) describe the position of organisms within food webs and help define their functional roles in ecosystems (Odum & Heald,...

This dataset contains the Latin names and literature-based broad trophic and feeding occurrence (in terms of category of feeding depth zone) characteristics of 809 taxa recorded...

Aquatic and terrestrial plants were collected from the Sacramento-San Joaquin River Delta. Nitrogen isotope values of bulk plant tissue and individual amino acids were measured....

Plant material was collected from aquatic and terrestrial environments from the Sacramento-San Joaquin River Delta. Carbon isotope values of bulk plant tissue and individual...

Aquatic and terrestrial plant materials were collected from the Sacramento-San Joaquin Delta region. Carbon and nitrogen isotope values of individual amino acids and bulk...