The concept of the Ecological Footprint can be used to illustrate the balance between the use of a natural resource or an ecological service and its availability. According to a new study, the Ecological Footprint could be valuable as an indicator to help track progress towards the goals of the Convention on Biological Diversity.

Diverse agri-environmental schemes which combine flowering crops with semi-natural habitats, such as grasslands and hedgerows, will be best for bees, new research suggests. The researchers examined the foraging behaviour of honey bees, bumblebees and other wild bees and found that all bees used semi-natural habitats, which were particularly important for wild bees, in addition to crops, such as sunflowers.

Endangered Mediterranean seabirds are suffering from ingestion of plastic litter, a recent study has shown. Overall, 66% of 171 seabirds studied were found to have plastic fragments in their stomachs and the critically endangered Balearic shearwater was among the worst affected.

Acidification of water bodies can have substantial impacts on aquatic wildlife, and even after chemical conditions improve, biological recovery may lag behind. A study of Swedish lakes shows that, although their chemical quality has improved as a result of international reductions of acidifying emissions, biological recovery has been much slower in some lakes.

New research from central Italy shows that high nature value farmland in the region can be accurately identified by the presence of just four bird species. Once such groups of species have been identified for different regions, they can provide a quick and inexpensive tool for assessing the ecological value of farmland, the researchers say.

The importance of 'stepping stone' patches of habitat for biodiversity has been underestimated, a new study suggests. The researchers developed a new connectivity model, which better captures the effects of stepping stones on species movement.

A framework to combine economically viable agriculture with effective biodiversity conservation has been described in a recent study. According to the researchers, their approach provides a simple guide designed to help planners and farmers achieve sustainable agriculture.

Offshore renewable energy sites may provide new 'stepping stone' habitats for marine species, a recent study suggests. They could allow some species to spread beyond their present range and help vulnerable creatures survive in the face of climate change. However, they may also allow harmful invasive species to spread, the researchers warn, and the effects of such projects must be assessed by examining their impacts on the ecosystem as a whole.

National bird conservation policies implemented in Eastern Europe in the 1990s have substantially benefited bird populations across the region, a new study has shown. Compared with the period 1970-1990, the population trends of species protected by national legislation improved during 1990-2000, particularly for those species receiving focused attention. Across the 306 species studied, the average rate of decline was much lower after protection than before. This suggests that modern conservation policies in the region were already taking effect.

How do offshore wind farms affect marine wildlife? A new study outlines a systematic approach developed for Swedish waters that could also be useful for assessing wind energy impacts on the marine environment more widely.

Managing urban green spaces to ensure that they have a good mix of tree species, including some older and larger trees, can enhance species diversity of woodland birds, a new study has shown. The study, carried out in Prague, Czech Republic, also showed that the presence of water bodies increased the number of species of woodland birds.

Increased plant biodiversity improves grassland soil quality by boosting its nitrogen levels, even in the absence of nitrogen-fixing plants, recent research has found. Previous research has shown that grasslands with higher biodiversity had higher levels of carbon and nitrogen. However, in the case of nitrogen it has been suggested that this was purely a result of increased numbers of nitrogen-fixing legumes, such as clover. This study was the first to show that, even without legumes, increased numbers of grassland species increased both carbon and nitrogen soil stocks.

‘Biodiversity offset’ schemes, which aim to compensate for the loss of unspoilt habitats to development, could lead to an overall loss in biodiversity, a recent study warns. Furthermore, the researchers highlight the considerable time needed, often hundreds of years, to fully recreate an ecosystem.

Monitoring biodiversity on farms is vital for conservation policies but how much does it cost? In a new pan-European study, researchers develop a standardised monitoring programme and estimate it will cost an average of €8 200 per farm to conduct. This cost could be dramatically cut if volunteer ‘citizen scientists’ or farmers help gather data for the programmes.

Two metrics for informing farmers about the biodiversity on their land are presented in a recent Swiss study: average species richness and farm ‘uniqueness’. These are both easy to understand and comparable between farms, the researchers say.

A potential new biopesticide, made of spider venom and snowdrop proteins, kills agricultural pests but shows minimal toxicity to honeybees, new research suggests. Learning and memory of honeybees exposed to the biopesticide were not affected, even at doses higher than they would normally encounter in the environment.

Only about two or three small birds are killed by wind turbines each year for every 225-300 houses supplied with renewable energy, new research suggests. The study collated data from 116 US and Canadian studies on 156 species of passerines (small birds). The study suggests some species are affected more than others, but that wind turbines generally have only a minor impact on these small-bird populations.

Britain’s freshwater ecosystems are on the brink of an invasional meltdown, a new study concludes. Examining 23 freshwater species from south-east Europe, researchers investigated whether individual species in the group would ‘pave the way’ for others, resulting in a rapid increase in establishment of invasive species. The results showed that 76% of the interactions between the species were positive or neutral, highlighting the possibility of severe consequences for Britain’s freshwater ecosystems.

Bottom trawling-dragging nets along the sea floor-reduces biodiversity most severely in deeper, species-rich habitats, a study suggests. New research in the Dutch North Sea has shown that this type of trawling had less effect on species richness in shallow areas with coarse sediments. These results suggest that efforts should be made to reduce trawling in these kinds of sensitive habitats, the researchers say.

Increased soil biodiversity can reduce nitrogen pollution, improve nutrient uptake by plants and even increase crop yields, new research suggests. The two-year study found that levels of nitrogen leaching from soil with an abundant soil life were nearly 25% lower than for soil with a reduced level of soil life. Practices which enhance soil biodiversity such as reduced tilling, crop rotation and organic farming may therefore help reduce the environmental impacts of fertilisers and improve agricultural sustainability, the researchers say.

The number of birds in Europe has fallen by more than 420 million between 1980 and 2009, new research has found. The study, which examined 144 bird species across 25 countries, found that 90% of the lost numbers were accounted for by common species, such as house sparrows (Passer domesticus). The decline was steepest in the first half of the study (1980–1994), followed by a period of greater stability in the second (1995-2009). More needs to be done to conserve common, as well as rare species, the researchers say.

The Aichi biodiversity targets, set by the UN Convention on Biological Diversity, are unlikely to be achieved by 2020, a new study suggests — despite some progress towards halting the global loss of biodiversity. The authors of the study call for policy responses to be strengthened if the ongoing loss of nature is to be stopped.

Virtually sea ice-free summers since 2005 have forced an important Arctic seabird species to change its foraging grounds and prey, new research shows. The body mass of the little auk — the most abundant seabird in the Atlantic Arctic — has shrunk by 4% in the past 20 years in one of its Russian breeding grounds, the study found. This change may be caused by its new foraging behaviour.

Conserving West African coastal waters is also important for conserving European seabirds, suggests new research. The study shows that both adult and juvenile northern gannets and Scopoli’s shearwaters migrate to coastal waters of West Africa for winter. However, they are at risk of death from unsustainable and illegal fishing activities in this region.

Citizen science holds the potential to address some of the biggest concerns facing biodiversity researchers, according to a new study. The study found that volunteers already save biodiversity research huge sums of money, but that their contributions are underused.

The effects of changing agricultural practices on farmland birds are explored in a recently published study from Sweden. Overall abundance of 16 common species declined by 23% between 1994 and 2004, which may be partly caused by changes in land use, such as an increase in the amount of wheat cropland. However, effects vary between species, and some species increased or stayed stable in number.

Biodiversity is declining in freshwater ecosystems across the globe, a new study has shown. The researchers created a mathematical model, called GLOBIO- aquatic, which builds a picture of the threats to the biodiversity of rivers, lakes and wetlands that are posed by a variety of human activities. The most crucial of these are land-use changes, nutrient and chemical pollution, and disturbances to the water cycle — which could be from infrastructure such as dams, or from climate change. The authors hope that the model will help policymakers identify regions which are most at risk from these pressures.

Drones — unmanned aerial vehicles — may be used in close proximity to bird populations without causing disturbance, finds a new study. Drones hold the potential to monitor species and areas that are difficult to reach. The authors advise that, when used with caution, drones could become a valuable tool in the monitoring of species, particularly in protected areas.

Biodiversity offset policies may inadvertently incentivise behaviours which actually accelerate biodiversity loss, new research has found. The study’s authors identify four ways this can occur and make recommendations for prevention.

Genetic identification of species through ‘metabarcoding’ offers a reliable, cost-effective way of producing biodiversity information for policymakers and managers, concludes an international study. The researchers show how the method can be used to help assess the impacts of environmental change and management on biodiversity.

Monitoring and assessment of habitats is essential to evaluate biodiversity policy and improve the condition of valuable ecosystems. A new study has reviewed the value of remote sensing — using information from satellite or airborne imagery — for this purpose, and the authors make a series of key recommendations, including the importance of tailoring remote sensing output for policymakers.

The fragmentation of brown trout (Salmo trutta) habitat indirectly affects the threatened freshwater pearl mussel (Margaritifera margaritifera), a new study has shown. Dams and weirs, which affect the migration of the fish, also have a knock-on effect on the mussels, because they rely on brown trout during the larval stage of their lives.

Geodiversity describes the diversity of the non-biological parts of the natural world such as rocks, soils, landforms and the processes which shape them over time. New research on how geodiversity information has been used to examine or inform conservation policy has been explored through eight different case studies. The research shows the variety and utility of geodiversity information to support biodiversity protection, both now and in the future.

Planting a variety of crop species in rotation in agricultural fields increases the diversity of soil microbes below ground, recent research has found. This in turn positively affects soil organic matter, soil structure and aids the healthy functioning of the soil. The researchers say that rotational diversity can help farmers to grow crops in a more sustainable way that promotes soil stability.

Amid efforts to reduce the loss of global biodiversity, a new study discusses how synergies and trade-offs between different conservation objectives should be researched and recognised in policy making. For example, by increasing protected areas, habitat loss and species decline could also be prevented.

Special conservation measures for bird species are required in EU Member States under Annex I of the Birds Directive. This study measured the efficacy of the Directive by comparing the population trends of these species to those of non-Annex I species. Annex I species had more positive trends in population from 1980–2012, despite extensive climate changes.

Urban waterways can provide foraging opportunities for a range of bat species. However researchers have found that bats in the UK are negatively affected by high levels of invasive plant species and urban development near waterways. The researchers highlight the value these often disregarded urban spaces can have for ecosystems, and suggest ways to improve the biodiversity of waterways.

Adapted habitat equivalency analysis (HEA) may help decision makers select projects to restore damaged ecosystems under a limited budget. HEA, used to assess damages to natural resources, can help to clarify objectives and compare trade-offs between projects to choose the most cost-effective among them, according to this study’s authors.

Insect-eating bats are estimated to be worth US$ 1 billion (€0.91 billion) a year to maize farmers around the world, a new study has revealed. Not only do bats reduce crop damage by eating adult corn earworm crop pests, they also suppress fungal infections in maize ears. Bats and their habitats need to be better protected for their ecological and economic contributions, say the study’s authors.

The preferred habitats of wetland bird species - including 12 that are endangered - have been identified by a new study. From conducting counts at 137 sites across Sweden, it was found that total species richness was highest in sites that had a tendency to flood; wet grassland areas that were grazed as opposed to mowed; and sites that were far from areas of woodland. The authors suggest this research could help determine the most suitable locations for future wetland conservation projects.

Lesser kestrel (Falco naumanni) populations survive equally well in grassland and artichoke fields in Italy, a recent study has concluded. Overall, however, populations are declining and the researchers recommend reducing pesticide use, growing alternative crops such as artichokes, and maintaining grasslands as part of the farming landscape.

Discarding – returning unwanted catches to the sea – is seen as wasteful, but banning the practice would remove an important food source for many marine organisms. This study modelled the effects of gradually reducing and abruptly banning discards using data from a protected bay in Australia. The researchers recommend gradual reduction of discards in order to maintain ecosystem stability.

Constructed wetlands are used in many countries as green infrastructure to treat waste water, but may also be biodiversity hotspots, a new study suggests. This study reports on a constructed wetland in an urban area of Italy, which increased the number of plant taxa — including several plants of conservation concern — by over 200%. The researchers say the ability of constructed wetlands to enhance biodiversity could support local development.

Eradication of invasive mammal species is a strategy used to help conserve biodiversity on islands and restore populations of native species. Researchers have now assessed the success of this strategy globally, highlighting the importance of controlling invasive species to protect biodiversity on islands and achieve global conservation targets.

Biodiversity scenarios are a useful tool to help policymakers predict how flora and fauna will likely respond to future environmental conditions. Although changes to land use are a major driver of biodiversity loss, scenarios focus overwhelmingly on climate change, a new study shows. The researchers say this imbalance makes scenarios less credible, and make recommendations for developing more plausible projections.

The rise in intensive agriculture, and associated land-use change, is a major driver of biodiversity loss. This study evaluated these effects via international food trade, calculating estimates of species loss for 170 crops and 184 countries. The results show that the majority of biodiversity loss is due to growing crops for domestic consumption but that industrialised countries can ‘import’ negative impacts from tropical regions.

A new long-term monitoring study is the first to demonstrate that climate changes are having divergent effects on populations of bird species across Europe and the United States. The study identifies broad-scale impacts on the abundance of common bird species over a 30-year period, to show that, overall, populations of bird species across both continents are being affected by changes in climate. The research adds to a growing body of evidence that climate change is affecting biodiversity either positively or adversely, depending on species’ climate preferences.

The risk of alien species introduction via trade in plants is higher if the plants are from poorly regulated countries with high forest cover, calculates a recent study. For introductions via the vehicle and timber trades, the risk is higher if the exporting country is politically unstable. These findings could help border controls focus their surveillance efforts on imports from countries with risky socioeconomic profiles.

A new study has analysed marine litter on beaches across the UK, indicating that the fishing industry is responsible for large quantities of marine rubbish. The researchers recommend a combination of better enforcement of regulations covering waste disposal, and incentives for fishing vessels to reduce marine litter.

Stakeholder support is essential to the success of environmental policies. A recent study has identified stakeholders that can promote biodiversity in European agricultural landscapes. The researchers found farmers were the most influential group of stakeholders, as they make the final decisions on land use. In turn, farmers are influenced in their decisions by a number of actors whose influence is perceived differently on a local and regional level.