Chironomidae (Diptera) and Vegetation in a Created Wetland and Implications for Sampling

Although invertebrate communities are used in the evaluation of created freshwater wetlands, spatial patterns of invertebrate community structure are frequently ignored. Invertebrate distributions are generally associated with plant community distribution in natural aquatic ecosystems. In this study, 180 core samples were collected to examine associations between chironomid (Diptera) genera and emergent vegetation communities in a single created freshwater herbaceous wetland in central Florida. Three of the five common genera were significantly more abundant (p \u3c 0.05, Wilcoxon Rank Sum Test) in areas with greater than 50% cover by emergent vegetation than in open water, but no differences were found between areas dominated by Pontederia cordata and areas dominated by mixed emergent vegetation. Samples from an area of open water and an area with over 80% cover by P. cordata showed significant differences in abundances of all common chironomid genera (P \u3c 0.05, Wilcoxon Rank Sum Test). Results suggest that sampling designs for studies comparing benthic invertebrate communities from natural and created wetlands should consider the possible associations between vegetation and invertebrate communities

New generation of knowledge: Towards an inter- and transdisciplinary framework for sustainable pathways of palm oil production

The production and expansion of palm oil have emerged as a major and controversial issue in political and public debates in the North and the South on sustainable food and agriculture. Scientific research has played a marginal role in these debates that are characterized by black and white views on palm oil as a good, bad or even ugly crop, and by solutions that are limited in scope. Our first argument is that new conceptualization of the complexity and dynamics of the palm oil sector can revitalize debate on sustainable palm oil and be used to identify sustainable pathways for palm oil production. For this purpose, we develop an interdisciplinary framework, conceptualizing the palm oil sector as consisting of systems, flows and networks. Our second argument is that a transdisciplinary approach is need to identify and develop sustainable pathways. We present six ideas on how to do so. Given the controversy in debates on the production and expansion of palm oil, we consider switchers as critical actors for shaping sustainable pathways, both in the palm oil sector and at the science-policy interface