By demonstrating that a species traditionally considered as part of the detrital (‘brown’) food web is thus an important accelerator of vegetation succession, this study documents an important but often overlooked link in food web and ecosystem ecology.
The data package consists of six datasets.
- DATA weight decrease in litter bags with and without Orchestia gammarellus: File presents data from litter bag experiment to investigate the effect of Orchestia gammarellus on litter decomposition. Litter bags were in Orchestia gammarellus addition and removal treatments, in two different vegetation types: late and early successional vegetation. Litter weight decrease (of original 10 grams) was determined in presence and absence of Orchestia gammarellus.
- DATA vegetation biomass after 2-year field experiment: File presents data vegetation biomass data from 2-year manipulation experiment with Orchestia gammarellus was addition, removed and control treatments in early (Limonium vulgare) and late successional (Elytrigia atherica) vegetationtypes. Vegetation biomass was determined in a 50x50 cm square, in July 2010. As a result of a mistake during the sample collection, two data points are missing.
- DAT Nmin, moisture: File presents data from 2-year manipulation experiment with Orchestia gammarellus addition, removed and control treatments in two different vegetation types. During this experiment, nutrient mineralization in the various treaments was monitored. This file contains data on total N mineralization, NH4 and NO3 as well as the availability of these. It also contains data on soil moisture.
- DATA Orchestia numbers and environmental variables along successional gradient: File contains information on Orchestia gammarellus abundances and a number of environmental parameters along a chronosequence gradient on the salt marsh of Schiermonnikoog.
- DATA soil redox potentials Orchestia Lab experiment: In a lab experiment we added Orchestia gammarellus to compacted salt marsh soils to investigate its effect on soil aeration and facilitation of a successional plant species, Elytrigia atherica. During the experiment we measured the redox potentials every 2 weeks.
- Data on other variables in the lab experiment: In a lab experiment we added Orchestia gammarellus to compacted salt marsh soils to investigate its effect on soil aeration and facilitation of a successional plant species, Elytrigia atherica. File contains data on plant performance of Elytrigia atherica, seedling germination, and survival of Orchestia gammarellus.