In several eastern Mediterranean countries orchids are collected from the wild for the production of salep, a beverage made of dried orchid tubers. The drivers of this collection and trade have changed over time. We investigated which genera and species are harvested for salep production, whether any cultivation takes place, the chain of commercialization, and the economic value of tuber collection. Fieldwork and interviews in north-western Greece included 25 collectors and street vendors, the owners of two companies, and one herbal shop. The results show that several orchid species are traded for the production of salep, and none are cultivated. Tubers collected in Greece, Albania and Turkey are sold in northern Greece for EUR 55–150 per kg on average. Recent catalysts such as the increasing demand for traditional, organic and alternative foodstuffs, and the 2009 economic downturn, have led to a revival of salep consumption, with an increasing number of salep harvesters from Greece and Albania scouring the mountains for harvestable tubers, using unsustainable harvesting practices.

Reintroductions aim to re-establish species within their historical ranges through the release of wild- or captive-bred individuals following extirpation (or extinction) in the wild. There is no general agreement on what constitutes a successful reintroduction but the probability of the population achieving long-term persistence should be addressed. Here we review a 10-year trial reintroduction of the great bustard Otis tarda, a globally threatened bird species, to the UK and assess the long-term population viability. Despite changes in rearing and release strategy, initial post-release survival probability remained consistently low, with only 11.3% of bustards (n = 167) surviving from release to 1 year post-release. Nineteen breeding attempts were made by eight females; however, only one chick survived > 100 days after hatching, and no wild juveniles have recruited into the population. Using demographic rates from the UK population and wild populations elsewhere, and stochastic population modelling, we investigate the viability of this reintroduced population by predicting population size over the next 10 years. Under current demographic rates the population was predicted to decline rapidly. Self-sufficiency was predicted only using the highest estimates from the UK population for first-year and adult survival, and recruitment rates from wild populations elsewhere. Although changes have been made in rearing, release strategies, habitat management and release sites used, these changes appear to have a modest effect on long-term viability. Substantial improvements in survival rates and productivity are necessary to establish a viable great bustard population in the UK, and we consider this unlikely.

Illegal exploitation of resources is a cause of environmental degradation worldwide. The effectiveness of conservation initiatives such as marine protected areas relies on users' compliance with regulations. Although compliance can be motivated by social norms (e.g. peer pressure and legitimacy), some enforcement is commonly necessary. Enforcement is expensive, particularly in areas far from land, but costs can be reduced by optimizing enforcement. We present a case study of how enforcement could be optimized at Cocos Island National Park, Costa Rica, an offshore protected area and World Heritage Site. By analysing patrol records we determined the spatial and temporal distribution of illegal fishing and its relationship to patrol effort. Illegal fishing was concentrated on a seamount within the Park and peaked during the third year-quarter, probably as a result of oceanographic conditions. The lunar cycle in conjunction with the time of year significantly influenced the occurrence of incursions. The predictability of illegal fishing in space and time facilitates the optimization of patrol effort. Repeat offenders are common in the Park and we suggest that unenforced regulations and weak governance are partly to blame. We provide recommendations for efficient distribution of patrol effort in space and time, establishing adequate governance and policy, and designing marine protected areas to improve compliance. Our methods and recommendations are applicable to other protected areas and managed natural resources.

This survey was part of a situational analysis of bushmeat hunting and trade in Sapo National Park in south-east Liberia. Increased private-sector investment in natural resource extraction and industrial-scale agribusiness outside the Park is anticipated to increase hunting pressure and lead to further declines in biodiversity unless informed, assertive actions are taken to protect it more effectively. Two commercial hunting camps on the Park's southern boundary were surveyed for 1 month each. Information on the catch of all professional hunters in these camps was documented. The results revealed a high diversity of species but significant and probably unsustainable bushmeat extraction rates. Eighty-two chimpanzees Pan troglodytes verus, including eight live infants, were recorded in the survey. Most of the bushmeat harvested was destined for Monrovia and other major towns. A concerted effort needs to be made to shut down these commercial camps but the potentially significant contribution that commercial trade makes to urban areas suggests that this can only be achieved if Liberia develops alternative sectors in domestic meat production to feed the growing urban population.

Four species of African vultures have been recategorized as Critically Endangered, and two as Endangered, on the IUCN Red List. Their declining status is attributed partly to the impacts of widespread poisoning. Prior to 2012 poisoning of vultures was mostly associated with illegal predator control by livestock farmers, in which vultures were typically unintended victims. More recently, ivory poachers have been using poisons to kill elephants Loxodonta africana or to contaminate their carcasses specifically to eliminate vultures, whose overhead circling might otherwise reveal the poachers’ presence. Between 2012 and 2014 we recorded 11 poaching-related incidents in seven African countries, in which 155 elephants and 2,044 vultures were killed. In at least two incidents the harvesting of vulture body parts (for fetish) may have provided an additional motive. We show that vulture mortality associated with ivory poaching has increased more rapidly than that associated with other poisoning incidents, and now accounts for one-third of all vulture poisonings recorded since 1970. This recent surge in the illegal use of poisons exposes weaknesses in the regulations, for which we propose measures aimed primarily at retail controls. However, because ivory poachers already operate outside any legal framework, African governments require international support in applying more punitive sentencing against mass wildlife poisoning.