Protect and enhance urban habitats

Oslo is completely surrounded by old forests full of wildlife and native species, providing important ecological services. This “Green Belt Boundary”, known as Marka, has been approved to be protected by the City Government in order to “ensure that the forests are protected against urban development. The management of the city’s forests follows a multi-user plan based on ecological principles and places the emphasis on a long-term and target-oriented development of a varied recreational forest that allows for nature conservation and outdoor activities”. 1,700km2 are protected by the Marka Act, of where 310km2 are located within Oslo municipality. (Ref. 1,9)

The city's nature conservation project in Göteborg includes ongoing work on making Lärjeån's valley (Lärjeåns dalgång) a natural reserve. The purpose of forming a nature reserve for Lärjeån valley (Lärjeåns dalgång) is to ensure the area's great natural and cultural landscape and outdoor life values. Parts of the area are of national interest for nature conservation and are also part of the EU's protected nature conservation network, Natura 2000. The ravine landscape of Lärjeån is home to some very interesting flora and fauna like salmon, trout and pearl mussel. The consultation for the project has ended. Comments received during the consultation period are currently being processed. Preliminary new information is yet to come on how the case will be pursued. The nature reserve will be formed with the support of the Environmental Code. (Ref. 1, 7 , 8)

As part of the title Green Capital of Europe, Ljubljana planted the first public orchard. The public orchard is open to citizens and visitors of the city, where fruits are available from mid-summer to late autumn. One part of the orchard includes a plantation of old varieties of apple, plum and pear, while the other includes trees species little known. The public orchard and nectar garden are intended for residents, passersby, volunteers, groups of pre-schoolers, families and educational organisations. The nectar garden is enriched by an innovative didactic adventure trail that winds around the nectar garden. Next to the nectar garden is a hotel for insects and bird feeder intended to promote biodiversity and raise awareness about nature conservation. Nearby is also a renovated playground for children. Three such orchards have been created in Rakovi jelši, Savski naselj and Puhtejeva ulica. The arrangement of the public orchard is one of the goals set in the environmental protection program for the City of Ljubljana 2014 - 2020. (1, 2 and 3)

The action proposed by the Municipal Technical Service of Parks and Gardens at the Department of the Environment, aims at the regeneration of the forest with the repopulation of pines of different ages, to imitate a mountain in a natural state with the plantation of the Cartagena Cypress and Tetraclinex articulata, which has a good adaptation to the environment. Several plots (Plots 3, 5, 6, 8 and 12 of the project) have been repopulated with shrubs and trees such as cypress, esparto, rosemary, tomillos, lentiscos, tetraclinex and palmito, in the solana area, deciduous and riparian species, and to other silvicultural treatments, which increases the variety of existing vegetation. (Ref. 1) In addition, the project contemplates the construction of two viewpoints (Ref 1, 3). A new irrigation system is put in place for the re-use of water for sustainable use and water savings. (Ref. 7)

Recognizing that wilderness areas in cities are getting scarcer and neglected, the Biological Station Bonn Rhein-Erft conducted a city-wide project, in cooperation with the municipality of Bonn, funded by the Regional Rhineland Association, whose goal was to assess, map, evaluate and redevelop wilderness patches in Bonn. These contain roadside meadows, flower strips, hedges and small green patches growing on concrete walls or fences and pavement cracks. 10 of these "Wild corners" were designated as micro-wilderness areas, information signs were installed and an informative city walk conceptualized (1,4,10).

The Ville Forests covering the hills between Bonn and Cologne are an example of a rare and highly endangered forest habitat type in Europe giving a home for many threatened animal species (1). The protection and conservation of these 'oak-hornbeam forests on hydromorphic soils and the forest-dwelling species was the main objective of the Villewälder: LIFE+ Project for Kottenforst and Ville project which includes four Natura 2000 areas with 4.378 hectares of forest. The conservation measures of the project focused on water balance restoration, habitat improvement and preservation, and the extension and connection of protected areas (1,2).

The aim of Ljubljanica Connects funded by Life+ is to improve connectivity between Natura 2000 sites. Started in 2012, the project aims to remove barriers to fish migration, enhance and restore habitats, improve water management infrastructures, and put in place a water monitoring system. This will restore the river Ljubljanica's function as a corridor, improve water management and so provide better links between Natura 2000 sites. The fish species in question are Danube Roach, Danube Salmon and Striped Chub (2).

To promote bee-keeping, the city created the Bee Trail - a circuit where visitors can discover Ljubljana's beekeeping heritage and the significance of bees for our survival. The Bee Trail was designed and opened in 2015 as one of the activities within the Green Capital of Europe 2016 project. It was originally conceived only as an actual route between individual locations related to beekeeping and bees in Ljubljana. Through the participatory principle of working with individual members, however, it has been shown that the path is much more than just a work program or project. It has become synonymous with all activities related to bees and beekeeping in Ljubljana. Since 2011, the Slovenian Beekeepers' Association has awarded municipalities the title of the most bee-friendly municipality. The City of Ljubljana has been awarded the most bee-friendly municipality - in 2017 and 2019. (1)

"Grünes" C is an initiative of six municipalities (Alfter, Bonn, Bornheim, Niederkassel, Sankt Augustin and Troisdorf) to secure, connect and (re)develop open and recreational spaces (agricultural, cultivated, garden, commercial landscapes, protected nature areas, rivers, transport routes). The major objective is to create an accessible, united park landscape in the original area of the "Grünes C" which spans 37 square kilometres to preserve those landscapes facing urban pressure. This is envisioned through a set of interventions initiated in and around the participating municipalities. Bonn has three interventions that will be dealt with here (3,4,5,9)

The Venice Lagoon is characterised by intensive agriculture and by a web of drainage channels discharging into the rivers. The Veneto Region, through the “Plan for diffuse pollution prevention and restoration of water in the draining basins of the Venice Lagoon” financed measures of re-calibration of riverbeds aimed at the renaturation of the hydraulic web, to increase the time of permanence of water and phytodepuration processes in the draining basin. This case study, in particular, includes measures on the drainage channels discharging into the Dese river, one of the main water bodies of the Venice Lagoon basin. In particular, it aimed at re-structuring the effluents of the mid-course of the Dese river (Rio S. Martino, Rio S. Ambrogio and Scolo Desolino). (1).