EU Biodiversity Research Articles

Forest Dynamic in the Italian Apennines

In recent decades, many mountain areas of the Mediterranean countries show spontaneous reforestation or densification due to depopulation and the consequent abandonment of traditional agricultural and pastoral activities, leading to the loss of open habitats. In this paper, dynamics of natural and semi-natural areas in the summit areas of the Abruzzo, Lazio e Molise National Park are investigated, highlighting changes that occurred from 1954 to present days. Historic Land cover maps have been produced by photo interpretation. A quantitative description of changes and habitats loss in relation to the socio-economic changes is provided. As expected, a forest surface expansion and an open areas decrease are observed similarly to many marginal mountains, where land abandonment and general forest/shrub recovery are the inevitable tendencies. An intense debate is still ongoing regarding the opportunity of rewilding, allowing the natural reforestation processes, versus the management of some areas, in order to preserve habitats and cultural traditional landscapes. For the EU biodiversity conservation policy to be effective, proper planning and management of interventions as well as public support and funding, become crucial when traditional activities are no longer profitable and viable for local inhabitants.

Perception of the Vegetation Cover Pattern Promoting Biodiversity in Urban Parks by Future Greenery Managers

Urban greening should consider solutions that meet the needs of the EU Biodiversity Strategy for 2030, such as enhancing biodiversity. Urban parks can realize these needs. They often have a large area for designing greenery compositions with elements at the population, biocenosis, and landscape biodiversity levels. The research was carried out on plant diversity in parks with different gardening styles. The results were published. The analyses have shown which elements of greenery composition play the role in the conservation of plant biodiversity and which gardening practices they depend on. These results were used to develop a vegetation cover pattern to be applied by the managers of park greenery. The concept of this pattern has been characterized in detail. Its main principle is the coexistence of spontaneously occurring vascular flora and its patches with complexes of ornamental plants. The structure of the pattern is to be controlled by gardening practices varied in terms of the method and intensity of maintenance. A relatively high level of biodiversity should be provided by autogenous (tall tree-cluster, thicket, tall herb fringe community) and anthropogenic seminatural (flower meadow) elements. It was assumed that the applicability of the proposed pattern may depend on its perception by both green infrastructure managers and park users. To investigate this, a questionnaire study was conducted. The respondents were university students, i.e., future managers of greenery. They were also users of parks. The aims of this questionnaire were to investigate: (1) perception of greenery composition in relation to utility functions of urban parks; (2) perception of the proposed vegetation cover pattern; (3) perception of gardening practices to maintain the proposed vegetation cover pattern; and (4) applicability prognosis of the proposed vegetation cover pattern based on the results of research on perception. Most of the respondents accepted the proposed pattern and the gardening measures needed to maintain it. This was concluded as a chance to implement the pattern in parks, and at the same time to meet the needs of the EU Strategy 2030.

Limited reciprocal surrogacy of bird and habitat diversity and inconsistencies in their representation in Romanian protected areas.

Because it is impossible to comprehensively characterize biodiversity at all levels of organization, conservation prioritization efforts need to rely on surrogates. As species distribution maps of relished groups as well as high-resolution remotely sensed data increasingly become available, both types of surrogates are commonly used. A good surrogate should represent as much of biodiversity as possible, but it often remains unclear to what extent this is the case. Here, we aimed to address this question by assessing how well bird species and habitat diversity represent one another. We conducted our study in Romania, a species-rich country with high landscape heterogeneity where bird species distribution data have only recently started to become available. First, we prioritized areas for conservation based on either 137 breeding bird species or 36 habitat classes, and then evaluated their reciprocal surrogacy performance. Second, we examined how well these features are represented in already existing protected areas. Finally, we identified target regions of high conservation value for the potential expansion of the current network of reserves (as planned under the new EU Biodiversity Strategy for 2030). We found a limited reciprocal surrogacy performance, with bird species performing slightly better as a conservation surrogate for habitat diversity than vice versa. We could also show that areas with a high conservation value based on habitat diversity were represented better in already existing protected areas than areas based on bird species, which varied considerably between species. Our results highlight that taxonomic and environmental (i.e., habitat types) data may perform rather poorly as reciprocal surrogates, and multiple sources of data are required for a full evaluation of protected areas expansion.

Assessment of air pollutants removal by green infrastructure and urban and peri-urban forests management for a greening plan in the Municipality of Ferrara (Po river plain, Italy)

Air pollution is a serious concern for human health and is even more worrying in areas that are known to be “pollution hotspots”, such as the Po Plain in northern Italy. The Urban Green Infrastructure (UGI), which includes urban and peri-urban forests, enhances human health and wellbeing delivering a wide range of ecosystem services, including air quality improvement. In this research, we analyzed, in biophysical and monetary terms, the role of the UGI in removing PM10 and O3 from the atmosphere in the Municipality of Ferrara using established removal models. We used a multiscale approach that includes geospatial data, field sampling and laboratory analysis. Then, using a local green areas database, we located public areas that could potentially undergo forestation actions without requiring any land conversion and evaluated the benefit in terms of ESs provision that these actions may exert. We found that, in 2019, the UGI in the Municipality of Ferrara removed about 19.8 Mg of PM10 and 8.6 Mg of O3, for a monetary benefit of € 2.12 million € and 147*103 respectively. We then identified about 121 ha within the urban core of the Municipality that could potentially be forested. Such an action would increase the PM10 and O3 removal by about 49% and 18%, respectively. Our findings comply with the EU Biodiversity strategy for 2030, which calls for the development of an ambitious greening plan for cities with more than 20,000 inhabitants.

Policy discourses for reconnecting nature with society: The search for societal engagement in Dutch nature conservation policies.

The recently published EU Biodiversity Strategy for 2030 emphasizes nature’s benefits to humans. In line with wider shifts in nature conservation discourses in many European countries, moving from nature’s intrinsic value towards its instrumental values, the EU strategy strongly focuses on a ‘Natural capital’ view. In this context of a European wide search for business opportunities and societal engagement in nature conservation, this article investigates efforts from Dutch governments to strengthen the link between nature conservation and society. Over the past 10 years, policy responsibilities for nature conservation in the Netherlands have been decentralized from the national level to the twelve provinces, who have employed a variety of approaches to stimulate societal engagement in nature conservation.Through discourse analysis, we show how the previously hegemonic “Ecology First” discourse – a hierarchical mode of governance with a strong focus on intrinsic values – has transgressed towards a more flexible and adaptive "Partnership for Nature" discourse, with a strong focus on aligning with local stakeholders through network governance. In addition, we describe the emergence of three new discourses: a “Green Economy” discourse, capitalizing on ecosystem services to unleash new financial resources; a “Relational Nature” discourse with a strong focus on people’s connections to nature; and a “Democratic Nature” discourse focusing on nature’s intrinsic and relational values combined with a mosaic governance approach. While the EU Biodiversity Strategy focus on natural capital aligns very well with the Dutch Green Economy discourse, the EU strategy gives little attention to the relational and democratic dimensions of societal engagement.Based on our analysis, we show that changing modes of governance relate to changes in values of nature. Government’s need for new conservation partners requires opening up for new values of nature. In addition, changing values of nature require a change in governance structures to allow new actors to participate and contribute. The increasing focus on natural capital and green economy at the European level may be a first step in such diversification. However, we argue that Europe needs to develop additional strategies beyond instrumental values, to allow for further diversification of values and include all stakeholders from society.

Environmental and Socio-Economic Assessment of the Dams at the Salmonid Rivers of Lithuania

EU Biodiversity Strategy for 2030 is aiming to restore 25,000 km of free-flowing rivers across Europe. The important issue is which barriers should be prioritised for removal. In this study a set of socio-economic and environmental criteria was chosen to rank the dams on salmonid rivers in Lithuania and recommend them for removal. As these criteria usual contradict themselves the multi-criteria decision analysis tool was utilized. The results showed that the Anykščiai dam on the river Šventoji can be recommended to be removed first. The removal can significantly increase the salmonid population in the river Šventoji over significant stretch of the river. Also, this dam is in the protected area and is not listed as national heritage and does not have hydropower plant on it. Although, this study showed that dams with hydropower plants can also be recommended for removal.

РОЗВИТОК ЗЕЛЕНОЇ ЕКОНОМІКИ У НАПРЯМКУ ФУНКЦІОНУВАННЯ ВЕНЧУРНИХ СТРУКТУР ДЛЯ РИНКУ ЕЛЕКТРОМОБІЛІВ

The climate crisis, along with the loss of biodiversity, is the biggest challenge the world is facing. The increase in global average temperatures has a significant impact on the climate, so the EU countries strive to preserve biodiversity and ecosystem services, to become a world leader in the conservation and restoration of nature in the next decade. In the environmental document "EU Biodiversity Strategy to 2030: Bringing nature back into our lives" (COM (2020) 380 final), the European Commission appealed to the European Parliament and intergovernmental institutions of the European Union to achieve a number of global goals set by the European Green Deal and the UN Framework Convention on biodiversity protection. In the development of the green economy, Ukraine has obligations regarding biodiversity within the framework of the Association Agreement with the European Union. The need to use environmentally friendly transport in Ukraine is determined by the global trends of transition to electric vehicles and the current ecological situation in the country. According to World Health Organization, Ukraine ranks first in the world in terms of air pollution deaths per 100,000 people. The article researched, analyzed and substantiated the relevance of the development of the "green" economy in Ukraine in the direction of the functioning of venture structures for the electric car market. The main objectives of the biodiversity strategy of the European Union are highlighted. The task and purpose of the "green" economy as an important component of the social, economic and ecological development of the state is presented. The goals of the European Green Course and the European Climate Pact were studied, and the main obligations of Ukraine were analyzed. Features of the functioning of venture structures, such as business incubators and business accelerators, are presented, and their important role in the development of startups is investigated. The role and significance of electric vehicles as environmentally friendly transport is defined. The role of venture capital structures as accelerators of Ukraine's development has been studied.

Conservation biology research priorities for 2050: A Central-Eastern European perspective

One of the main goals of the EU Biodiversity Strategy for 2030 is to avoid further loss of biodiversity and to restore ecosystems. These efforts can be facilitated by compiling the main research topics related to conservation biology to provide new evidence for the most urgent knowledge gaps, and publicise it to researchers, research funders and policy makers. We used the possible future statements from the Hungarian Environmental Foresight Report for 2050 which identified region-specific problems. To highlight likely future environmental and conservation questions, in this study we asked researchers from the fields of ecology and conservation to define research questions addressing these future statements in line with international research trends and challenges. The study resulted in fourteen priority research topics, split into seven clusters relevant to biological conservation that should be targeted by stakeholders, primarily policy makers and funders to focus research capacity to these topics. The main overarching themes identified here include a wide range of approaches and solutions such as innovative technologies, involvement of local stakeholders and citizen scientists, legislation, and issues related to human health. These indicate that solutions to conservation challenges require a multidisciplinary approach in design and a multi-actor approach in implementation. Although the identified research priorities were listed for Hungary, they are in line with European and global biodiversity strategies, and can be tailored to suit other Central and Eastern European countries as well. We believe that our prioritisation can help science–policy discussion, and will eventually contribute to healthy and well-functioning ecosystems.

Mapping and Assessment of Ecosystems Services under the Proposed MAES European Common Framework: Methodological Challenges and Opportunities

The EU Biodiversity Strategy for 2020 was a driving force behind spatially explicit quantifications of Ecosystem Services (ES) in Europe. In Portugal, the MAES initiative (ptMAES–Mapping and Assessment of Ecosystem and their Services) was conducted in 2014 to address Target 2 (Action 5) of the Strategy, namely mapping and assessing ecosystems, ecosystems’ condition (EC), and ES. In this study covering the NUTS II Alentejo region, EC was assessed and mapped based on four indicators (soil organic matter, plant and bird diversity, and ecological value of plant communities) and five ES were assessed and mapped (soil protection, carbon sequestration, and fiber/crop/livestock production). Assessments were performed under a multi-tiered approach, ranging from spatialization of statistical data to analytical modeling, based on the most detailed land-use/land-cover cartography available. In this paper, we detail the methodological and analytical framework applied in ptMAES and present its main outcomes. Our goal is to (1) discuss the main methodological challenges encountered to inform future MAES initiatives in Portugal and other member states; and (2) further explore the outcomes of ptMAES by looking into spatial relationships between EC and ES supply. We highlight the advantages of the proposed analytical framework and identify constraints that, among others, limited the number of ES and EC indicators analyzed. We also show that MAES can provide useful insights to landscape planning at the regional scale, for instance, red-flagging areas where ES supply may be unsustainable over time.

An environmental evaluation framework for planning and monitoring of nature based solutions for sustainable urban management

In response to urban challenges created by global climate change, nature based solutions (NBS) are accepted as viable sustainability solutions that provide environmental, economic, and social benefits. In order to mainstream NBS projects and secure necessary funding, an evidence-based approach, supported by performance indicators, is necessary for planning and deployment stages. The main aim of this article is to establish an assessment framework, which fosters the urban planning and implementation periods of NBS projects and forms a linkage between adaptation actions with urban sustainability policies by making use of monitoring data that enables predictive estimation of future scenarios. This framework entails definition of relevant environmental indicators through a material flow analysis (MFA)-based urban metabolism (UM) approach and a proposal for the dynamic application of these indicators to be used for monitoring purposes. While the environmental assessment framework supports selection of most suitable NBS to tackle urban challenge of concern, the dynamic performance tracking provides critical, strategic and analytical insights to ensure the desired targets are met. Such an assessment methodology can also maximize the contribution of NBS to EU policies including European Green Deal (EGD), EU Biodiversity Strategy and EU Adaptation Strategy.

Integrating conservation targets and ecosystem services in landscape spatial planning from Portugal

Securing biodiversity values alongside ecosystem services and other socio-economic assets, is a priority in the European policy and territorial planning. Here, we design a landscape planning approach that identifies priority conservation areas and informs on their ecosystem services’ potential in the context of a legally binding spatial planning instrument in central Portugal. Our approach included a spatial prioritisation approach of biodiversity, a literature review on the potential supply of ecosystem services, the participation of political stakeholders, and expert-based field validation in the Municipality of Alvaiázere. Firstly, we used the decision-support software Marxan to help prioritising biodiversity conservation efforts. Then, we evaluated the potential supply of multiple ecosystem services from a systematic literature review. Finally, we selected priority areas for landscape planning and management through a participatory approach with local politicians, considering the relevance of those areas to safeguard biodiversity assets alongside ecosystem services’ potential supply for the region. A total of nine priority areas, with both high biodiversity values and potential for ecosystem services’ supply, were identified. For the first time in the country, those areas have been considered in the design of the main spatial planning instrument for the region, together with practical recommendations for in situ management. Our approach represents a first step to engage local administration in the EU Biodiversity Strategy for 2030, focused on the protection and restoration of biodiverse areas with ecosystem services’ potential through legally binding landscape planning.

Modelling of soil characteristics as basis for projections of potential future forest ecosystem development under climate change and atmospheric nitrogen deposition

BackgroundThe EU Biodiversity Strategy to 2020 foresees that Member States assess conditions and potential developments of ecosystems under climate change and atmospheric nitrogen deposition. This combination of environmental impacts has never been modelled for the German territory before. Therefore, the aim of the presented dynamic modelling of soil parameters under the influence of changing atmospheric nitrogen deposition with simultaneous climate change at representative sites in Germany was to derive knowledge about the expected development of ecosystem conditions up to a possible change of the respective site-specific current ecosystem type. The dynamic modelling was performed with the Very Simple Dynamic soil model. The selection of 15 modelling sites regarded the availability of data from environmental monitoring programmes routinely operated by public institutions and the aptitude of data for parametrising the soil model. The most important input data are time series of nitrogen and acid deposition as well as time series of the relevant climatic-ecological parameters. The simulation period covered the years 1920–2070.ResultsThere are no continuous linear correlations between the level of acidifying or eutrophying inputs and the course of soil parameter values. The step-like courses result from the resilience of the ecosystems within certain parameter ranges. Atmospheric nitrogen deposition has led to nitrogen saturation at 14 of 15 sites selected for modelling. Currently, no linear (negative) correlation between nitrogen deposition and carbon/nitrogen ratio could be established at these sites any more. An increase in the N-content in the soil was only slight, if at all. On the other hand, the nitrate concentration in the leachate increases in correlation to the N deposition. A clear (negative) correlation was found for the dependence of the C/N ratio on the temperature development in connection with climate change. The predicted air temperature rise until 2070 will also cause a decrease of the carbon content in the future, caused by the increasing activity of decomposing soil organisms. Thus, the drastic decrease of the C/N ratio at all of the study sites is due to the significant decrease in the C content. The validation shows that the dynamic modelling of abiotic site parameters has delivered plausible results at the investigated sites. The applicability of the results could be demonstrated. Thus, the evaluation of the time series of soil and climate parameters resulted in forest ecosystem types that are capable of self-regeneration in the future under the conditions of air pollutant inputs and climate change.ConclusionsThe dynamic modelling of soil parameters under the influence of atmospheric nitrogen deposition and of climate change enables to transparently rank the potential development of ecosystem conditions up to a possible extinction of the current ecosystem type. Thus, the soil modelling approach presented contributes to the implementation of the European Biodiversity Strategy.

Habitat Preferences of Italian Freshwater Fish: A Systematic Review of Data Availability for Applications of the MesoHABSIM Model

The MesoHABitat SImulation Model (MesoHABSIM) is the preferred method to calculate spatio-temporal variation in the fish habitat availability in Italian rivers. With the aim of improving the applicability of the MesoHABSIM approach in the Italian territory, we carried out a systematic review of physical habitat preferences for 31 freshwater fish species and three freshwater lampreys, representing 75% of the total indigenous freshwater fish community of Italy. Information related to suitable ranges of depth, flow velocity, biotic/abiotic substrates, covers/shelters was collected and summarized for two critical life stages (adult and juvenile) and two bioperiods (rearing/growth and spawning). Overall, 250 publications were reviewed, classified as 206 peer-reviewed papers, 20 books, 7 PhD thesis, and 17 grey literature sources. Our analysis revealed substantial deficits of information about habitat requirements for more than 30% of Italian freshwater fish species. This information is particularly scarce for the most threatened endemic species, especially for their most critical bioperiod (i.e., spawning). With the aim of preserving freshwater fish biodiversity as required in the EU Biodiversity Strategy for 2030 (European Commission, 2020), accurate information on physical habitat requirements for spawning is crucial. As an example application of MesoHABSIM, the collected habitat preference information was used to define and apply mesohabitat suitability criteria for one fish species (Telestes muticellus) in a regulated river reach of Argentina Creek (Province of Imperia, Italy). This analysis demonstrates the potential for applying information from the current review to other fish species.

The Network of Green Infrastructure Based on Ecosystem Services Supply in Central Europe

Green infrastructure is a strategically planned network that broadens traditional biodiversity conservation methods to also encompass the concept of ecosystem services (ES). This study aims to identify the network of green infrastructure in Central Europe. An analysis of ecological connectivity is based on ES supply quantified for CORINE land cover classes. Corridors between core areas, which are represented by Natura 2000 sites, are based on the capacity of ecosystems to supply maintenance and regulating ES. The delineated network of corridors of green infrastructure covers approximately 15% of the landscape of Central Europe that provides high levels of various ES. Ecological corridors create linkages between Natura 2000 sites and support the migration and dispersal of species. Central Europe is an important transitional region where coordinated improvement of ecological connectivity is fundamental. Moreover, promotion of the green infrastructure network and full implementation of the EU Birds and Habitats Directives are targets of two important documents at the European level, the EU Biodiversity Strategy 2030 and the EU Strategy on Green Infrastructure.

Adopting a cross-scale approach for the deployment of a green infrastructure

The implementation of a Green Infrastructure (GI) involves several actors and governance scales that need adequate knowledge support. The multifunctionality of GI entails the implementation of a cross-scale approach, which combines assessments conducted at different levels and active stakeholder engagement. This paper provides a methodology to implement a cross-scale approach to support the deployment of a Regional GI. The methodology was tested in Lombardy Region (north-west of Italy), considering three relevant territorial scales and relative strategic and planning policies. The continental level representing the overall policy-context; the regional level, with its key role for guaranteeing landscape coherence and connectivity and the local level where planning actions are effectively designed and implemented. The EU Biodiversity Strategy for 2030 and the EU GI strategy were used as references for the continental level; at the regional level, a proposal of Regional GI was evaluated focusing on two Provinces (Varese and Lecco), three regional parks (Ticino, Adda Nord and Campo dei Fiori). At the local scale, the new development plan of the Municipality of Cassano d'Adda (Milan metropolitan area) was evaluated considering different possible scenarios. The regional GI was evaluated with respect to the capacity to provide Cultural Ecosystem Services (CES). CES were mapped using the ESTIMAP-recreation model. The model was adapted to the regional and local level with the active engagement of local stakeholders. Additionally, census data were analysed to obtain an overview of the equitable distribution of the CES amongst inhabitants. Results show that, in 78% of the census blocks of the study area, inhabitants have a high-value recreation resource within 4 km (31% within 4 km and 47% within 300 m). Unmet demand characterises 22% of the census blocks in the study area, clustered in zones with a high population density. The regional GI covers almost completely the two Provinces and the regional parks. In Varese Province: 68% of the territory is included in the regional GI, 82% of the census blocks local demand for recreation opportunities is met, but the population density is higher where the demand is unmet. The Province is characterised by a relatively old population (share of people older than 65 years 23.4%). In Lecco Province, 80% of the territory is included in the regional GI, in 96% of the blocks the local demand is met and the local population is relatively old (share of elderly population 22.12%). The three regional parks present significant differences, strongly influenced by the territorial context. The Campo dei Fiori Park is almost completely included in the regional GI. The entire local population has nature-based recreation opportunities in their close vicinity. Nevertheless, the population density is very low and citizens are relatively old. The majority of the Parco Adda Nord is included in the regional GI providing recreation opportunities to 90% of the census blocks within the Park boundaries. A total of 70% of Ticino Park is included in the regional GI, where local residents are relatively old (share of elderly population 23.78%) and 90% of local census blocks are close to nature-based opportunities. At local scale, we explored how the approach can be used to estimate changes in the CES potential provision and how this can be integrated into a site management plan. This paper demonstrated that the combination of studies in a cross-scale perspective enhances the understanding of GI multifunctionality. It provides a framework to adapt CES mapping models to the local setting with active stakeholders engagement. Moreover, it demonstrates that also highly urbanised areas, such as the Lombardy Region in Italy, can play a role in the deployment of a continental GI and can support biodiversity and nature protection.

Macroalgae niche modelling: a two-step approach using remote sensing and in situ observations of a native and an invasive Asparagopsis

We are facing a global loss of biodiversity due to climate change. This will lead to unpredictable changes in ecosystems, affecting the goods and services they provide introduction of non-indigenous marine species. This represents one of the major threats to marine biodiversity and therefore, there is a strong need to assess, map and monitor these alien species. The appearance of non-indigenous species is especially dangerous in fragile ecosystems and it is of great importance to better understand the invasion mechanisms of these invasive species. This is the case for invasive alga Asparagopsis armata, present in the Azores Archipelago. In this study we propose a methodology to define the realized ecological niche of this invasive alga, alongside the native Asparagopsis taxiformis, to understand better its distribution and potential impact on native communities and ecosystem services. These objectives comply with the EU Biodiversity strategy for 2020 goals and the need to map and assess ecosystems and their services. The lack of reliable high-resolution data makes this a challenging task. Within this scope, we propose a combination of Remote Sensing, Unmanned Aerial Vehicle based imagery together with in-situ field data to build ecological niche modelling approaches as a cost-effective methodology to identify and characterize vulnerable marine ecosystems. Our results show that this combination can help achieve monitoring, leading to a better understanding of ecological niches and the consequences of non-indigenous species invasion in fragile ecosystems, like small islands, when faced with limited data.

Biodiversity 2030: a road paved with good intentions: The new EU Commission's biodiversity Strategy risks to remain an empty husk without proper implementation.

The EU's Biodiversity Strategy for 2030 makes great promises about halting the decline of biodiversity but it offers little in terms of implementation.

Marine restoration in the Mediterranean: red coral and fan mussel discourses, uncertainty and reaching restoration targets

Although there is a wide range of legislative support for marine environmental policy and management, existing and emerging pressures continue to threaten biodiversity and ecosystems. Recent ambitious policies have represented a paradigm shift, moving from the traditional hands-off preservation towards more active forms of intervention through ecosystem restoration, with explicit targets for restoration of degraded ecosystems (2020/2030 EU Biodiversity Strategy). This work analyses the discourses and uncertainties in the cases of the fan mussel Pinna nobilis and the red coral Corallium rubrum in the Mediterranean, through a literature review and expert interviews. The major discourses are placed within a restoration framework based on the degree of intervention and the underlying motivations. The major discourse for both of these emblematic threatened species is ecocentric-based ‘Putting Nature First’, set around passive restoration (low-level intervention with protective measures to reduce stressor impact). Emerging discourses resulting from coastal developments and mass mortality events for the mussel and overfishing for corals, has required active restoration, with on-going small-scale actions. Both species highlight comparable shortcomings and constraints concerning restoration, particularly facing unknown baselines (what to restore to) and multiple uncertainties (population status, diseases, co-stressors, and long-term success of restoration). The top-down policy restoration targets lack detail towards implementation and most restoration efforts to-date are local-scale through bottom-up personal motivations, that have not been meeting policy targets. Lessons learned include the need to scale up passive measures and to couple with increased levels of active intervention with clear ideas on what, why, how and where to restore.

Urban sprawl into Natura 2000 network over Europe.

Urban growth is a major threat to biodiversity conservation at the global scale. Its impacts are expected to be especially detrimental when it sprawls into the landscape and reaches sites of high conservation value due to the species and ecosystems they host, such as protected areas. I analyzed the degree of urbanization (i.e., urban cover and growth rate) from 2006 to 2015 in protected sites in the Natura 2000 network, which, according to the Habitats and Birds Directives, harbor species and habitats of high conservation concern in Europe. I used data on the degree of land imperviousness from COPERNICUS to calculate and compare urban covers and growth rates inside and outside Natura 2000. I also analyzed the relationships of urban cover and growth rates with a set of characteristics of Natura sites. Urban cover inside Natura 2000 was 10 times lower than outside (0.4% vs. 4%) throughout the European Union. However, the rates of urban growth were slightly higher inside than outside Natura 2000 (4.8% vs. 3.9%), which indicates an incipient urban sprawl inside the network. In general, Natura sites affected most by urbanization were those surrounded by densely populated areas (i.e., urban clusters) that had a low number of species or habitats of conservation concern, albeit some member states had high urban cover or growth rate or both in protected sites with a large number of species or habitats of high conservation value. Small Natura sites had more urban cover than large sites, but urban growth rates were highest in large Natura sites. Natura 2000 is protected against urbanization to some extent, but there is room for improvement. Member states must enact stricter legal protection and control law enforcement to halt urban sprawl into protected areas under the greatest pressure from urban sprawl (i.e., close to urban clusters). Such actions are particularly needed in Natura sites with high urban cover and growth rates and areas where urbanization is affecting small Natura sites of high conservation value, which are especially vulnerable and concentrated in the Mediterranean region.

Plant Endemism Centres and Biodiversity Hotspots in Greece.

Simple SummaryAiming to cope with the provisions of Aichi Biodiversity Targets, EU Biodiversity Strategy and EU Green Deal, we conducted the first nationwide, phylogenetically informed identification of vascular plant diversity hotspots and endemism centres in Greece. By this, we identified the most important factors that shaped them, and assessed the effectiveness of the Special Areas of Conservation of the Natura 2000 network in safeguarding them. Qualitative and quantitative results are provided and presented in thematic maps and relevant diagrams, highlighting areas of conservation importance, and identifying current protection scheme gaps. Simultaneously, our work contributes to national efforts for drafting Natura 2000 sites Management Plans, as well as to the MAES implementation in Greece.Biodiversity hotspots (BH) cover a small fraction of the Earth’s surface, yet host numerous endemics. Human-induced biodiversity loss has been increasing worldwide, despite attempts to halt the extinction crisis. There is thus an urgent need to efficiently allocate the available conservation funds in an optimised conservation prioritization scheme. Identifying BH and endemism centres (EC) is therefore a valuable tool in conservation prioritization and planning. Even though Greece is one of the most plant species-rich European countries, few studies have dealt with the identification of BH or EC and none has ever incorporated phylogenetic information or extended to the national scale. Consequently, we are unaware of the extent that Special Areas of Conservation (SAC) of the Natura 2000 network efficiently protect Greek plant diversity. Here, we located for the first time at a national scale and in a phylogenetic framework, the areas serving as BH and EC, and assessed the effectiveness of the Greek SAC in safeguarding them. BH and EC are mainly located near mountainous areas, and in areas supposedly floristically impoverished, such as the central Aegean islands. A critical re-assessment of the Greek SAC might be needed to minimize the extinction risk of the Greek endemics, by focusing the conservation efforts also on the BH and EC that fall outside the established Greek SAC.