The LTSER Zone Atelier Seine belongs to LTER-France network and is located in Seine River Basin. The ZA Seine general aim is the study of a whole region. How its inhabitants construct the aquatic environment, as well as the quality of surface- and ground-waters may be seen as the dominant scientific question. The question is posed at various scales in space (from sub-catchments to the whole basin), and in time (from historical analysis starting in the Middle-Age to prospective studies for the next century).

This is a Sphagnum dominated bog, which is part of a mire complex.

The Intensive Monitoring of Forest Ecosystems (ICP-Forests Level II network) consists currently in 14 monitoring plots representing important Spanish Forest Ecosystems distributed throughout the Spanish mainland showing the most common forest situations of each country and representing rare or endemic situations. The plot 37 Ppr represents a Pinus pinaster forest located in the Castilian region. It is a 41 to 60 years old monoespecific regular forest. The tree layer covers one third of the plot area. Climatic gradient is Supramediterranean. The plot is located on siliceous sands. The soil is poor.

The Intensive Monitoring of Forest Ecosystems (ICP-Forests Level II network) consists currently in 14 monitoring plots representing important Spanish Forest Ecosystems distributed throughout the Spanish mainland showing the most common forest situations of each country and representing rare or endemic situations. The Plot 22 Pn represents a Pinus nigra pine forest of Maestrazgo region (Iberian mountain range) . It is an 81 to 100 years old monoespecific regular forest The stand is in the regeneration section, before the final cut. Climatic gradient is Supramediterranean. Plot is located in a hillside, with gentle slope. Soil is calcareous and extremely rocky.

The Intensive Monitoring of Forest Ecosystems (ICP-Forests Level II network) consists currently in 14 monitoring plots representing important Spanish Forest Ecosystems distributed throughout the Spanish mainland showing the most common forest situations of each country and representing rare or endemic situations. The plot 33 Qpe represents the oak Quercus petraea forests in the Cantabrian region. It is a forest stand with high density. There are several beech trees mixed with an understory of holly trees and heather. Climatic gradient is montane, in the Eurosiberian region, The soil is made up of ferruginous slates.

The Intensive Monitoring of Forest Ecosystems (ICP-Forests Level II network) consists currently in 14 monitoring plots representing important Spanish Forest Ecosystems distributed throughout the Spanish mainland showing the most common forest situations of each country and representing rare or endemic situations. The plot 30 Ps represents an Scots pine (Pinus sylvestris) forest located in Soria province. It is an 81 to 100 years old monoespecific regular forest, with a coverage of 85%. Climatic gradient is Supramediterranean. The topography is flat. The soil is made up of sandstones and conglomerates. it is chemically very poor and with limited thickness.

The Intensive Monitoring of Forest Ecosystems (ICP-Forests Level II network) consists currently in 14 monitoring plots representing important Spanish Forest Ecosystems distributed throughout the Spanish mainland showing the most common forest situations of each country and representing rare or endemic situations. The Plot 25 Ph represents a Pinus halepensis pine forest located in the East of the Iberian peninsula. It is a mature monoespecific regular forest. Climatic gradient is Mesomediterranean. The soil is calcareous, shallow and extremely rocky.

The Intensive Monitoring of Forest Ecosystems (ICP-Forests Level II network) consists currently in 14 monitoring plots representing important Spanish Forest Ecosystems distributed throughout the Spanish mainland showing the most common forest situations of each country and representing rare or endemic situations. The plot 54 Ph represents a Pinus halepensis pine forest located in the eastern part of the Iberian Peninsula, in the coastal zone. It is a regular monospecific stand, a pine forest mixed with some eucalyptus (Eucalyptus rostrata) trees. Climatic gradient is Thermomediterranean. The plot is situated on a gentle slope.

The Intensive Monitoring of Forest Ecosystems (ICP-Forests Level II network) consists currently in 14 monitoring plots representing important Spanish Forest Ecosystems distributed throughout the Spanish mainland showing the most common forest situations of each country and representing rare or endemic situations. The plot represents an Holm oak (Quercus ilex) forest located in the West of the Iberian peninsula. It is a 41-80 years old monospecific regular forest. It is a “dehesa” forest canopy (5 less than fcc less than 20%). Understory formed by Cistus sp and a rich herbal layer. Climatic gradient is Mesomediterranean. Soil is made up of sandstone.

The Intensive Monitoring of Forest Ecosystems (ICP-Forests Level II network) consists currently in 14 monitoring plots representing important Spanish Forest Ecosystems distributed throughout the Spanish mainland showing the most common forest situations of each country and representing rare or endemic situations. The plot 06 Qi represents an Holm oak (Quercus ilex) forest located in the East of the Iberian peninsula. It is a 41-80 years old monospecific regular forest. It was a coppice forest which is currently under transformation into high forest There are many Holm oak shoots In the understory. There are also rocky outcrops, with ferns. In the places where there is a grass layer, there is Hedera helix. Climatic gradient is Mesomediterranean. Soil is made up of limestone