Data on pollen is very valuable for many scientific questions relating to climate change, ecology and allergology. This data is analysed according to European standards by analysts at the Medical University of Vienna. At the Biologische Station Neusiedler See, a so-called pollen trap is used, which is positioned on the roof of the station and is maintained on a weekly basis. Air is sucked in and pollen particles adhere to a rotating adhesive film, allowing not only the detection of certain pollens, but also their temporal classification. This makes this method suitable for determining the pollen count and pollen forecasting.

Baseline Vegetation data from the UK Environmental Change Network (ECN) terrestrial sites. These data are collected at all of ECN's terrestrial sites using a standard protocol (see supporting documentation). This was a one-off whole site baseline vegetation survey (though given the intensive nature of this survey, some sites did it over successive years) to generate a vegetation map and identify the areas within the site to be monitored. In this protocol up to 500 systemic 2m x 2m plots were surveyed and species presence recorded. ECN is the UK's long-term environmental monitoring programme. It is a multi-agency programme sponsored by a consortium of fourteen government departments and agencies. These organisations contribute to the programme through funding either site monitoring and/or network co-ordination activities. These organisations are: Agri-Food and Biosciences Institute, Biotechnology and Biological Sciences Research Council, Cyfoeth Naturiol Cymru - Natural Resources Wales, Defence Science & Technology Laboratory, Department for Environment, Food and Rural Affairs, Environment Agency, Forestry Commission, Llywodraeth Cymru - Welsh Government, Natural England, Natural Environment Research Council, Northern Ireland Environment Agency, Scottish Environment Protection Agency, Scottish Government and Scottish Natural Heritage.

Vascular plant cover estimated in the Kiskunság Restoration Experiments (1995-2019). The Kiskun Restoration Eperiments are located in abandoned arable land and clear-cut tree plantations mostly, but not entirely within LTER Fulophaza and close to the Bugac-Bocsa-Orgovany Site in the Kiskunság Sand Ridge. We have three restoration experiments with long-term monitoring of changes in plant species cover according to treatments. The locations are differentiated as stations in the database. Experiment one (Exp1) involved mowing as treatment (1995-2001) on clear-cut and chemically treated previous Robinia pseudo-acacia plantations in Fülöpháza, Izsák and Bugac (three stations). A 30 m x 40 m block was allocated for the mowing treatment at each site with twelve adjacent plots of 10 m by 10 m, with six control (unmowed) and six treatment (mowed) plots randomly selected. We also had some reference grassland plots. Monitoring took place in three permanent 2 m x 2 m units per each site (n=18/treatment) from 1995-1999, re-sampled several times until 2017. Data are accessible separately for the three sites (stations), sample ID reflects the 2 m x 2 m sampling units. Experiment two (Exp2) is located in Fülöpháza in on abandoned farmland (station). The experiment involved old-field sites. Treatment was carbon addition to induce soil N immobilization in 1998-2003. The block design was the same as above. Monitoring took place from 1998-2004, plus re-sampled less frequently till 2018. Data are accessible in one file for the station, sample ID reflects the 2 m x 2 m sampling units. Experiment three (Exp3) is also located in Fülöpháza in abandoned fields. Three stations are included that are abandoned arable fields of different age. Restorative treatments involved seeding, mowing and carbon amendment in 1 m x 1 m units (n=64) from 2003 to 2008. Monitoring took place in 2003-2008, resampled in 2019. Data are accessible separately for the three sites (stations), sample ID reflects the 1 m x 1 m sampling units with indication of treatments.

High resolution hydrology recording mainly by PLSC_Sensors (measuring water level, temperature-depending on water level it is the ground air temperature or water temperature- and conductivity) but also by Hydrolab-Multiparameter Sensors (measuring temperature, oxygen, pH, conductivity, turbidity) for monitoring the soda pans in the vicinity of soda Lake Neusiedl. The on-line measurement of these wetland sensors in the “Seewinkel”-district are measuring at high time resolution of every three minutes. The locations of these sensors are in the soda pans, which mostly dry out at least once a year, and are as follows (in alphabetical order): Hydrolab-Waterquality_Multiparameter-Sensor - Fuchslochlacke: N47°47.376’ & E016°51.149’ PLSC-Sensor - Fuchslochlacke: N47°47.376’ & E016°51.149’ PLSC-Sensor - Graurinderkoppel: N47°43.400’ & E016°48.148’ PLSC-Sensor - Meierhof-Lacke (Apetloner Hof): N47°43.296’ & E016°49.359’ PLSC-Sensor - Unterer Stinker: N47°48.161’ & E016°47.098’

Weekly and monthly physico-chemical water samples of Rivière des Pluies watershed, La Reunion island

Precipitation chemistry data from the UK Environmental Change Network (ECN) terrestrial sites. Variables measured include pH, conductivity, alkalinity, aluminium, calcium, chloride, ammonium, nitrate nitrogen, phosphate phosphorous, potassium, sulphate sulphur, sodium, total nitrogen and total dissolved phosphorous. These data are collected by a bulk collector at all of ECN's terrestrial sites using a standard protocol. They represent continuous weekly records from 1992 to 2015. ECN is the UK's long-term environmental monitoring programme. It is a multi-agency programme sponsored by a consortium of fourteen government departments and agencies. These organisations contribute to the programme through funding either site monitoring and/or network co-ordination activities. These organisations are: Agri-Food and Biosciences Institute, Biotechnology and Biological Sciences Research Council, Cyfoeth Naturiol Cymru - Natural Resources Wales, Defence Science & Technology Laboratory, Department for Environment, Food and Rural Affairs, Environment Agency, Forestry Commission, Llywodraeth Cymru - Welsh Government, Natural England, Natural Environment Research Council, Northern Ireland Environment Agency, Scottish Environment Protection Agency, Scottish Government and Scottish Natural Heritage.

Sunshine duration of meteorological Station Rudolfshütte

Dataset provides Total Nitrogen (TN in mg L-1) in Lake Paione Superiore (LPS) at different layer depths measured at least twice per year (late summer/autumn) during the period 2014-2020. In total 37 records of Total Nitrogen recorded in the Lake are uploaded.

MOSES test campaign was performed between Börnchen and Dittersdorf from the 20.05.2019 to the 23.07.2019

Data on 9 permanent observation pine stands are presented. Investigations are carried out since the 1992. Presented data: dendrometric parameters, condition, defoliation, tree ring width series, FAR/LAI, primary productivity, dead wood, meteorology, soil and needle chemistry, graound vegetation.