Related Experiment Video
Updated: Apr 23, 2026
07:53
Bioindication Testing of Stream Environment Suitability for Young Freshwater Pearl Mussels Using In Situ Exposure Methods
Published on: September 5, 2018
6.7K
Freshwater habitats within the Natura 2000 network.
Annette Baattrup-Pedersen1, Marta Baumane1, Anders Nielsen2
1Department of Biology, Aarhus University, Aarhus C, Denmark.
Summary
Freshwater habitats in Europe's Natura 2000 network are inadequately protected, with low spatial coverage and incomplete geographical representation. Strengthening this network is crucial for conserving freshwater biodiversity.
Area of Science:
- Ecology
- Conservation Biology
- Environmental Science
Background:
- Freshwater biodiversity is declining globally, necessitating effective conservation strategies.
- Protected areas, like Europe's Natura 2000 network, are vital for biodiversity conservation.
- The European Nature Restoration Law (NRR) aims to reverse biodiversity declines through conservation and restoration efforts.
Purpose of the Study:
- To assess the representation of Annex I freshwater habitats within the Natura 2000 network.
- To evaluate if current protection enables meaningful conservation and restoration under the NRR.
- To determine if freshwater habitats are represented across their full natural geographical range for long-term persistence.
Main Methods:
- Analysis of spatial coverage of freshwater habitats within Natura 2000 sites.
- Assessment of geographical distribution of Annex I freshwater habitats across biogeographic regions.
- Development of a webtool to visualize freshwater habitat distribution within the Natura 2000 network.
Main Results:
- Freshwater habitats cover only 6.2% of Natura 2000 sites; running waters comprise just 0.4%.
- Several Annex I freshwater habitats are not represented across their complete natural geographical ranges.
- A webtool was developed to aid stakeholders in examining habitat distribution and protected species.
Conclusions:
- The Natura 2000 network requires systematic strengthening to adequately cover freshwater habitats.
- Expansion of designated freshwater habitat types, both within and outside existing sites, is necessary.
- Addressing representation gaps across biogeographic regions is essential for effective freshwater biodiversity conservation.
Related Concept Videos
01:24Freshwater Microbial Ecology
54
Freshwater systems such as streams, rivers, and lakes exhibit distinct physical and biological characteristics that influence their microbial communities. These environments are broadly categorized into lotic systems—those with flowing waters like streams and most rivers—and lentic systems, which include still or slow-moving waters such as lakes, ponds, and marshes.In lentic systems, phytoplankton drive primary production, generating autochthonous organic carbon. In contrast, lotic...
54
01:17What is an Ecosystem?
38.2K
Overview
38.2K
01:18Deep Sea Microbial Ecology
49
The deep ocean and its underlying sediments represent vast, largely unexplored microbial habitats that extend far beyond the sunlit photic zone. The photic (euphotic) zone typically spans the upper ~100–200 meters of pelagic waters in the open ocean, but its depth varies geographically and seasonally, where sufficient light supports photosynthetic life. Below this lies the deep sea, spanning roughly 1000–6000 meters (bathypelagic to abyssal zones), with deeper hadal trenches...
49
02:31Habitat Fragmentation
15.7K
Habitat fragmentation describes the division of a more extensive, continuous habitat into smaller, discontinuous areas. Human activities such as land conversion, as well as slower geological processes leading to changes in the physical environment, are the two leading causes of habitat fragmentation. The fragmentation process typically follows the same steps: perforation, dissection, fragmentation, shrinkage, and attrition.
15.7K
02:02Ecological Niches
22.2K
All organisms have a position within an ecosystem. The complete set of living and nonliving factors—including food resources, climate, and terrain—that define the position of a given organism are collectively referred to as the organism’s ecological niche.
22.2K
01:50Threats to Biodiversity
21.6K
There have been five major extinction events throughout geological history, resulting in the elimination of biodiversity, followed by a rebound of species that adapted to the new conditions. In the current geological epoch, the Holocene, there is a sixth extinction event in progress. This mass extinction has been attributed to human activities and is thus provisionally called the Anthropocene. In 2019 the human population reached 7.7 billion people and is projected to comprise 10 billion by...
21.6K