Food provision to nestlings in the Hoopoe Upupa epops: implications for the conservation of a small endangered population in the Swiss Alps

Population Density of the Crayfish, Orco

Population Density of the Crayfish, Orconectes limosus, in Relation to Fish and Macroinvertebrate Densities in a Small Mesotrophic Lake – Implications for the Lake's Food Web

✍ Susanne S. Haertel-Borer; Dominik Zak; Reiner Eckmann; Ulrich Baade; Franz Hölke 📂 Article 📅 2005 🏛 John Wiley and Sons 🌐 English ⚖ 130 KB

## Abstract The population density of __Orconectes limosus__ in a mesotrophic lake was assessed in the context of fish and macroinvertebrate biomasses, and crayfish consumption by fish. The average __O.__ __limosus__ (≥6 cm total length) abundance and biomass in the littoral zone was 2200 ind ha^–1