0000000000373192
AUTHOR
Lluís Brotons
Consistent response of bird populations to climate change on two continents
Global climate change is a major threat to biodiversity. Large-scale analyses have generally focused on the impacts of climate change on the geographic ranges of species, and on phenology, the timing of ecological phenomena. Here, we use long-term monitoring of the abundance of breeding birds across Europe and the USA to produce, for both regions, composite population indices for two groups of species: those for which climate suitability has been either improving or declining since 1980. The ratio of these composite indices, the Climate Impact Indicator (CII), reflects the divergent fates of species favored or disadvantaged by climate change. The trend in CII is positive and similar in the …
Degradation in landscape matrix has diverse impacts on diversity in protected areas.
Introduction: A main goal of protected areas is to maintain species diversity and the integrity of biological assemblages. Intensifying land use in the matrix surrounding protected areas creates a challenge for biodiversity conservation. Earlier studies have mainly focused on taxonomic diversity within protected areas. However, functional and especially phylogenetic diversities are less studied phenomena, especially with respect to the impacts of the matrix that surrounds protected areas. Phylogenetic diversity refers to the range of evolutionary lineages, the maintenance of which ensures that future evolutionary potential is safeguarded. Functional diversity refers to the range of ecologic…
Future supply of boreal forest ecosystem services is driven by management rather than by climate change
Forests provide a wide variety of ecosystem services (ES) to society. The boreal biome is experiencing the highest rates of warming on the planet and increasing demand for forest products. To foresee how to maximize the adaptation of boreal forests to future warmer conditions and growing demands of forest products, we need a better understanding of the relative importance of forest management and climate change on the supply of ecosystem services. Here, using Finland as a boreal forest case study, we assessed the potential supply of a wide range of ES (timber, bilberry, cowberry, mushrooms, carbon storage, scenic beauty, species habitat availability and deadwood) given seven management regi…
Effects of Natura 2000 on nontarget bird and butterfly species based on citizen science data
The European Union's Natura 2000 (N2000) is among the largest international networks of protected areas. One of its aims is to secure the status of a predetermined set of (targeted) bird and butterfly species. However, nontarget species may also benefit from N2000. We evaluated how the terrestrial component of this network affects the abundance of nontargeted, more common bird and butterfly species based on data from long-term volunteer-based monitoring programs in 9602 sites for birds and 2001 sites for butterflies. In almost half of the 155 bird species assessed, and particularly among woodland specialists, abundance increased (slope estimates ranged from 0.101 [SD 0.042] to 3.51 [SD 1.30…
Comparative spatial behaviour and longevity in cicadas in unburnt vs. burnt forest areas with different management
Recently burnt habitats are a challenge for the persistence of animal populations. Insects that survive the fire, for example belowground, may sometimes show behavioural plasticity and manage to find adequate resources. But the disturbed habitat is usually not favourable to their survival and reproduction, because of increased predation and limiting resources. Whether insects survive, die or emigrate from burnt areas depends on species-specific traits. Cicadas live belowground as nymphs for several years, appearing aboveground as adults for just a few days. They often emerge in severely burnt forests that may have been logged afterwards, where the habitat structure and composition is totall…
Overall (first) results of the ‘100 questions for biodiversity conservation in Mediterranean-type regions of the world’ initiative
Mediterranean-type ecosystems (MTEs), with their characteristic climate, occur in just five regions of the world: the Mediterranean Basin, the Cape Region of South Africa, Southwestern and South Australia, California, and central Chile. In spite of their small geographic area, they harbour a significant and exclusive proportion of the planet’s biodiversity. Biodiversity values in MTE are threatened by a range of factor including land use changes, overexploitation of natural resources, global climate changes, among others. Researchers have a key role in providing solutions for conserving biodiversity in face of these multiple stressors and socio-economic challenges. Under the scope of the So…
Improving the contribution of citizen-science to monitoring programs requires integrated planning
Monitoring biodiversity is a fundamental tool for its conservation, as it provides information that can guide and eventually improve the effectiveness of management outcomes. Citizen-science is increasingly advocated as a complement to governmental monitoring programs to overcome scarcity of resources and deliver important information for policy-making. In this study, we used the spatial optimization tool Marxan to explore the advantages and limitations of combining government and citizen-science monitoring networks to achieve monitoring targets for bird species of conservation concern for the EU in Catalonia (NE Spain), a region where both schemes are well established. We designed and comp…
Priority questions for biodiversity conservation in the Mediterranean Basin
The Mediterranean Basin is considered one of the world’s biodiversity hotspots, harbouring particularly high species richness and endemicity of taxonomic groups such as plants. This hotspot is unique at the global scale, because it has a history of intense anthropogenic influences that dates back to thousands of years, and where the current high-levels of biodiversity have thus been able to coexist with humans for millennia. Despite this long history of coexistence, biodiversity in the Mediterranean Basin is at risk due to a number of old and new anthropogenic stressors, including fast land use changes, overexploitation of natural resources, and global climate change. To tackle these proble…
Declining populations of European mountain birds
Mountain areas often hold special species communities and are thus in the high priority list of conservation. Changes in human land use, such as grazing pressure and afforestation, and especially in climate have been suggested as major threats for biodiversity in the mountain areas, because species have difficulties to find new suitable habitats in circumstances. Despite the special species communities very little is known about the population trends of species in mountain areas [1,2]. Here we studied population trends of 44 bird species in four major European mountain regions: Fennoscandia, UK upland, south-western (including Pyrenees) and south-central mountains (including Alps), covering…