Project

Functional feeding traits in changing fish communities


Background

The morphological characteristics of an organism enable and limit its capacity for dealing with the environment, e.g. its ability to handle particular food types, or its capacity to swim in fast-flowing water. By studying the quantitative and causal relationships between form and function, functional traits can be derived. A good understanding of functional traits may lead to a better insight in the interaction between species and the structure of food webs. They may even be used for predicting shifts in the community under different pressures, such as fisheries or climate change.

Objectives

The main objective of this project is to gather a large database of functional traits from many fish communities, to search for general patterns in their functional structures and to see how different (human-induced) pressures influence these structures. Eventually the aim is to develop tools for quickly monitoring changes in fish communities and to predict functional shifts under pressure.

Figure description: Predictions of the feeding capacities of nine Dutch bottom-dwelling freshwater fishes.
Figure description: Predictions of the feeding capacities of nine Dutch bottom-dwelling freshwater fishes.

Methodology

The main tools will be ‘old-fashioned’ anatomical study, including dissection, but also image processing, and (multivariate) statistics.

Requirements for BSc and MSc thesis subjects

Biological curiosity, a steady hand, precision and concentration, not afraid of numbers and fish smell

Contact information

Leo Nagelkerke@wur.nl