Pollination and pest control are essential to global food production. This study shows that — as well as their individual benefits — they have synergistic effects on yield. Their joint effect increased the yield of oilseed rape by 23%, and the economic benefit from their combined effects was almost twice that of their individual contributions. These findings have implications for sustainable agricultural policy.

Scientists have developed a new way of monitoring Ponto-Caspian gobies, a group of widely invasive fish species, by detecting traces of the fishes’ DNA in river water. They say, in a recent research paper, that it offers a quicker, easier and cheaper way of monitoring the fish than conventional catching or sighting methods.

Large carnivores play important roles in ecosystems by regulating populations of herbivores and other species. Understanding how human activities affect the role of predators, particularly within human-modified systems such as agricultural landscapes, is therefore important. This study investigated how predator and prey populations were distributed in Transylvania, Romania, and assessed them in relation to human activities. The research highlights how relationships between large carnivores and people need to be considered as part of biodiversity conservation efforts, especially considering the successful recovery of several large carnivore populations within the EU.

A new study has assessed community perceptions towards a controversial wind-farm development in Cornwall, UK, following installation. The results indicate that a range of social, economic and environmental factors influence residents’ perceptions of wind farms. Although negative opinions of the wind farm were found both before and after construction, overall, community attitudes towards them became more favourable after construction, adding to evidence that fear of living near wind farms can reduce over time.

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.

Transport infrastructure is so widespread in Europe that half of the land area is within 1.5 kilometres (km) of paved roads and railway lines, researchers have calculated. The researchers found that in Spain, transport infrastructure has an impact on the abundance of birds in almost half of the country and is affecting the abundance of mammals across almost all of the land area.

Biodiversity’s contribution to ecosystem services in grasslands — at different levels of the food chain (known as trophic levels1) — has been assessed in a new study. Higher species diversity across trophic levels — particularly for plants, insects and soil microbial decomposers — is important for the provision of multiple ecosystem services related to food production, recreational benefits, or climate regulation. Species diversity across different trophic groups was also found to be just as important in controlling ecosystem functioning as the management intensity of grasslands and environmental factors, such as climate or soil type.

The prominent role of EU countries in the international trade of reptiles for pets, including many rare and illegally traded species, is highlighted in a recent study. The researchers call for better enforcement and tighter legislation to control the trade, which is a major threat to global biodiversity. In particular the researchers appeal for legislation to be passed for species protected in their native range countries, which can currently be freely traded in the EU if they are not subject to international trade conventions such as CITES.

The coverage of ‘Important Bird and Biodiversity Areas’ (IBAs) in relation to Special Protection Areas (SPAs) for birds in the EU has been assessed in a new study. Overall, 66% of the IBA network is covered by SPAs. SPAs were found to cover 23% of the distributions of 435 EU bird species as well as 25% of the distributions of mammals, reptiles and amphibians.

This study is one of few to assess the genetic diversity of crops in an agroecosystem over several years. Researchers analysed the genetic makeup of oilseed rape plants within and outside crop fields over four years. They found similarity between cultivars of field plants in one year and those of feral plants (unplanted) in the following year. They also found persistence of the cultivars within the feral plants, which suggests that feral populations with genetically modified (GM) traits might result from persistent GM traits within field seed banks. The researchers say their findings could aid impact assessments of GM crops.

The Natura 2000 network is the backbone of nature conservation in the EU, and agri-environment schemes (AES) are an important tool to protect biodiversity on European farmland. A recent study, which investigated the effectiveness of AES in relation to grassland birds in Poland, found that AES were not associated with species richness of target species, and proposed a number of reasons for this. The researchers recommend that AES management regimes should be diversified and customised to provide optimal habitat for a wider range of bird species.

A new study has investigated the effects of set-aside management —when fields are taken out of agricultural production — on common invertebrate decomposers in soil. The diversity of woodlice species was higher in set-aside fields compared to neighbouring wheat fields and this effect increased in older set-asides. This study highlights the importance of set-aside areas as habitats for soil invertebrates, which are important for soil health.

Researchers have found that farmer experience, concerns and motivation influence environmental outcomes for agri-environment schemes (AES), in a study in southern England. Farmers with more environmental-management experience and/or concern for wildlife created habitats that provided more pollen and nectar for bees and butterflies and winter seed for birds. The results suggest that supporting environmental learning among farmers may increase the success of AES.

Results-based agri-environment measures are an alternative to management-based measures that, in certain circumstances, could be both more effective and more cost-efficient, since their payment depends on the provision of the desired conservation outcome. This study reviews the success of a scheme, introduced in Germany in 2000, to preserve biodiversity in species-rich grassland.

The cost-effectiveness of agri-environment schemes to conserve species and habitats under the Scottish Rural Development Programme (SRDP) has been assessed by a recent study. Cost-effectiveness was found to vary widely between schemes. Improvements in cost-effectiveness relative to specific conservation objectives might be achieved with increased geographical targeting, advice and monitoring of impacts.

Researchers have developed a new metric to predict the ecological impacts of invasive alien species. The metric was calculated for a number of known invasive alien species and successfully predicted their impact on native species. The tool could be used to help inform the global management of invasive alien species.

Invasive alien species (IAS) pose a threat to native European biodiversity and cost the EU annual damages worth EUR 12 billion as a result of IAS effects on human health, damaged infrastructure, and agricultural losses. IAS are the focus of Target 9 of the Convention of Biological Diversity (CBD) and Target 5 of the EU Biodiversity Strategy: ‘By 2020, IAS and their pathways are identified and prioritised… pathways are managed to prevent the introduction and establishment of new IAS.’ The EU framework for action against IAS is set out in a Regulation adopted in 2014. This provides for the adoption of a list of IAS of Union concern that will be subject to restrictions across the EU. The first step in order to consider a species for listing is to undertake a risk assessment.

Woody networks in agricultural landscapes are known to harbour high intrinsic biodiversity (i.e. diversity of plant species) and functional biodiversity (i.e. ecosystem services that arise from biodiversity). In order to clarify the drivers of intrinsic and functional biodiversity in woody networks, researchers analysed the plant species diversity, pollinator resource value (PRV), and potential edibility value (PEV) of a woody network in northern Belgium. The analysis confirmed that woody elements are a rich source of intrinsic and functional biodiversity and identified several important drivers. From a policy perspective, this research highlights the value of protecting existing woody elements and thoughtfully designing and locating new ones to maximise intrinsic and functional biodiversity in the countryside.

Indexing is a popular topic I write about from time to time. Today I want to focus on what happens when there are duplicate indices.... read more >>

MATLAB is a great computing environment for engineers and scientists. MATLAB also provides access to general-purpose languages including C/C++, Java, Fortran, .NET, and Python. Today's guest blogger, Toshi Takeuchi, would like to talk about using MATLAB with Python.... read more >>

Today I'd like to introduce a guest blogger, Stephen Doe, who works for the MATLAB Documentation team here at MathWorks. In today's post, Stephen discusses how to take advantage of recent performance improvements when indexing into tables. The same approach applies to many different data types. While the release notes describe the performance improvements, in today's post Stephen also offers further advice based on a simple code example.... read more >>

New research demonstrates how nanoparticles of silver in antibacterial socks and other fabrics may be released into the environment by washing. The study suggests that the release of silver from the textiles depends to a large extent on the way the silver has been incorporated into the fabric and that producers have possibilities for minimising release.

A recent report raises awareness of the impact of pharmaceuticals in the environment. Experts from science, industry and the state sector have drawn up a series of proposals for actions that need to be taken at the European level to increase understanding and improve management of the risks.

In 1989 a large oil tanker famously ran aground off the Alaskan coast, spilling 11 million gallons of crude oil into the waters of the Prince William Sound. Over 20 years later oil still contaminates some of the nearby gravel beaches. A recent study suggests it is the physical condition of the beaches that has caused the oil to persist. This research could provide guidelines for remediating susceptible beaches worldwide.

Atrazine, a herbicide used globally but banned in the EU, can cause chemical castration and complete feminisation in adult male frogs, according to a recent study. The researchers suggest atrazine could contribute to the global decline of amphibians.

A new study has combined two research methods to assess the risk of pesticide contamination within a river basin and identify locations of risk. Six groups of pesticides were identified in a French river basin and one specific area was labelled as 'high risk' due to intense agriculture.

Long-range atmospheric transport of polycyclic aromatic hydrocarbons (PAHs) has polluted sediments in high mountain lakes in Europe. Recent research has found that lakes in northeastern Europe are a hotspot for PAH contamination, and concentrations of these toxic compounds were also above the 'no effect' threshold in lakes in north, central, west and southeast Europe.

EU pesticide regulations have encouraged farmers in developing countries to adopt alternative pest management practices and employ safer means of handling pesticides, according to a recent study which investigated green bean farming in Kenya.

A recent study has investigated the effectiveness of the EU concentration limit for Plant Protection Products (i.e., agricultural pesticides) in protecting groundwater ecosystems. For the majority of pesticides, the standard of 0.1 micrograms per litre for each individual pesticide was found to be sufficient, but this may not be the case for some insecticides.

Pesticides and biocides can cause serious harm to aquatic ecosystems. A study by Swiss researchers has found that the levels of some common biocides entering wastewater and rivers from urban environments are similar to those of pesticides from agricultural land. Although smaller quantities are used in urban areas, similar total amounts escaped into surface waters.

A new study has developed a set of indicators to evaluate how well companies voluntarily manage dangerous chemicals. These indicators can be used to check progress towards the World Summit on Sustainable Development goal of effectively managing chemicals.

Many agricultural pesticides used in Europe could disrupt male hormones and lead to infertility problems, according to laboratory tests. ‘Biomonitoring’ studies to investigate the actual behaviour of pesticides in the human body are now urgently needed to clarify the link between pesticide exposure and male reproductive health.

Record high prices for gold have driven a recent six-fold increase in deforestation in parts of the Peruvian Amazon with damage that can be measured from space, according to a new study. Rates of forest clearance and imports of mercury, used to process gold ore by local, small-scale miners, were both found to increase with the rising international price of gold.

In a new study, scientists have analysed the outcome of millions of barrels of oil and gas discharged into the Gulf of Mexico during the Deepwater Horizon disaster. By measuring changes in the composition of the fluid, scientists now have a better understanding of how pollution behaves in the deep ocean, to improve estimates of environmental impact.

The Deepwater Horizon Oil Spill saw the first ever use of chemical dispersants to reduce the impacts of an oil spill at a deepwater level. A new study has investigated the fate of these dispersants in deepwater and concluded that they do not biodegrade well.

As bee populations decline, exposure of pollinators to pesticides is of increasing concern. Italian research has now demonstrated that an index of exposure which accounts for insect behaviour, as well as pesticide application, provides a valuable tool for assessing the realistic risk of pesticides to pollinators.

A new tool has been developed which highlights ‘hot spots’ of pharmaceutical pollution in Europe, where human health and aquatic environments could potentially be affected. The results suggest that the substances and locations posing the greatest risk are not the same for the aquatic environment as for human health.

An overview of groundwater contaminants in Europe is provided by a recent study, which calls for more integrated monitoring using a range of indicators. Groundwater contamination presents serious health and environmental concerns.

Changes in complex microbial communities known as ‘biofilms’ at the bottom of rivers can reveal the effects of pesticide and pharmaceutical pollution of river water, according to a recent study. Painkillers and anti-inflammatory drugs were found to have a significant effect on the structure and functioning of the biofilms.

Non-target aquatic wildlife species may be more vulnerable to pesticides’ effects, with repeated exposure to low doses over the long-term, if they compete with other species for food, according to a recent study. Understanding how this process occurs can help those undertaking risk assessments and managing pesticides in the natural environment.

Ecotoxicity tests that are used to understand the impacts of chemical pollutants on aquatic organisms and ecosystems could be improved by including all life stages of the test animals. These are the conclusions of a study by Belgian researchers, who found that the apparent absorption of some pesticides by the dormant eggs of water fleas may have negative effects on the invertebrates’ later survival and reproduction, although the development and hatching of the eggs are not affected.

A technique that can detect the array of pesticides bees might be exposed to has been developed in Poland. The simplicity, speed and small sample sizes required for screening makes this technique an improvement over other methods, say the researchers behind its development.

Use of the rodenticide bromadiolone to control water voles in France may also result in population declines of the near-threatened red kite, a new study suggests. The researchers propose a range of alternative forms of controlling vole populations, limiting the need for environmentally-damaging poisons.

Pollution from agricultural pesticides can present a serious threat to aquatic ecosystems. Researchers have now developed a guide to identify the most appropriate measures to reduce pesticides entering waterways. It focuses on reducing pesticide entry via spray drift or runoff.

The world's first full-scale artificial wetland designed to treat both sewage effluent and mine wastewater has been found to continuously remove high levels of pollutants, a recent study concludes. Treating both types of wastewater at the same time proved to be highly beneficial because they contain pollutants which are more easily removed when mixed together.

Levels of aquaculture pesticides exceed UK environmental quality standards (EQSs) in samples taken from near Norwegian fish farms, a recent study has shown. The researchers examined five pesticides used to kill sea lice (Lepeophtheirus salmonis) and showed that in many cases their concentrations exceeded UK EQSs. They used UK standards, they explain, because there are currently no Norwegian EQSs for these chemicals, and call for international quality standards to be drawn up.

Integrated Pest Management (IPM) is a sustainable approach to reduce pesticide use and risks of adverse effects on human health and the environment. However, its adoption by European farmers cannot be based only on mandatory regulation by the European Union, a new study suggests. The research identified four key factors driving IPM adoption; including market forces, policy instruments and farmers’ attitudes to the environment.

Beetles that are helpful to farmers can be poisoned if they feed on slugs that have eaten crops treated with neonicotinoids, a new study reports. The slugs themselves are not harmed by neonicotinoids. In American field trials, researchers found that plots planted with neonicotinoid-treated soybeans contained more slugs, fewer beetle predators and had 5% lower yields. The insecticide may be reducing the beetles’ effectiveness as a natural control of slug pests.

Ninety-eight per cent of radioactive iodine in Arctic sea ice may come from Europe, new research suggests. The study concludes that atmospheric transport of Iodine-129 from European nuclear fuel reprocessing plants is the most likely source.

A new method for mapping the spread of oil released by ships is presented in a recent study, where it is applied to the Adriatic and Ionian Seas of the Mediterranean. The method pulls together a range of data, including information on shipping routes, oil particle behaviour, currents and climate. In this case study, it reveals pollution hotspots in the south-western Adriatic Sea and north-eastern Ionian Sea.