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1.
PLoS One ; 12(9): e0184100, 2017.
Artigo em Inglês | MEDLINE | ID: mdl-28926608

RESUMO

With increasing coastal infrastructure and use of novel materials there is a need to investigate the colonisation of assemblages associated with new structures, how these differ to natural and other artificial habitats and their potential impact on regional biodiversity. The colonisation of Europe's first artificial surf reef (ASR) was investigated at Boscombe on the south coast of England (2009-2014) and compared with assemblages on existing natural and artificial habitats. The ASR consists of geotextile bags filled with sand located 220m offshore on a sandy sea bed at a depth of 0-5m. Successional changes in epibiota were recorded annually on differently orientated surfaces and depths using SCUBA diving and photography. Mobile faunal assemblages were sampled using Baited Remote Underwater Video (BRUV). Distinct stages in colonisation were observed, commencing with bryozoans and green algae which were replaced by red algae, hydroids and ascidians, however there were significant differences in assemblage structure with depth and orientation. The reef is being utilised by migratory, spawning and juvenile life-history stages of fish and invertebrates. The number of non-native species was larger than on natural reefs and other artificial habitats and some occupied a significant proportion of the structure. The accumulation of 180 benthic and mobile taxa, recorded to date, appears to have arisen from a locally rich and mixed pool of native and non-native species. Provided no negative invasive impacts are detected on nearby protected reefs the creation of novel yet diverse habitats may be considered a beneficial outcome.


Assuntos
Recifes de Corais , Animais , Clorófitas/crescimento & desenvolvimento , Inglaterra , Peixes/crescimento & desenvolvimento , Invertebrados/crescimento & desenvolvimento , Rodófitas/crescimento & desenvolvimento , Têxteis , Urocordados/crescimento & desenvolvimento
2.
Philos Trans R Soc Lond B Biol Sci ; 370(1681)2015 Nov 05.
Artigo em Inglês | MEDLINE | ID: mdl-26460137

RESUMO

Measures of socio-economic impacts of conservation interventions have largely been restricted to externally defined indicators focused on income, which do not reflect people's priorities. Using a holistic, locally grounded conceptualization of human well-being instead provides a way to understand the multi-faceted impacts of conservation on aspects of people's lives that they value. Conservationists are engaging with well-being for both pragmatic and ethical reasons, yet current guidance on how to operationalize the concept is limited. We present nine guiding principles based around a well-being framework incorporating material, relational and subjective components, and focused on gaining knowledge needed for decision-making. The principles relate to four key components of an impact evaluation: (i) defining well-being indicators, giving primacy to the perceptions of those most impacted by interventions through qualitative research, and considering subjective well-being, which can affect engagement with conservation; (ii) attributing impacts to interventions through quasi-experimental designs, or alternative methods such as theory-based, case study and participatory approaches, depending on the setting and evidence required; (iii) understanding the processes of change including evidence of causal linkages, and consideration of trajectories of change and institutional processes; and (iv) data collection with methods selected and applied with sensitivity to research context, consideration of heterogeneity of impacts along relevant societal divisions, and conducted by evaluators with local expertise and independence from the intervention.


Assuntos
Conservação dos Recursos Naturais/métodos , Conservação dos Recursos Naturais/economia , Conservação dos Recursos Naturais/estatística & dados numéricos , Ecossistema , Humanos , Mudança Social , Fatores Socioeconômicos
3.
Conserv Biol ; 29(1): 78-87, 2015 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-25492724

RESUMO

The potential impacts of payments for environmental services (PES) and protected areas (PAs) on environmental outcomes and local livelihoods in developing countries are contentious and have been widely debated. The available evidence is sparse, with few rigorous evaluations of the environmental and social impacts of PAs and particularly of PES. We measured the impacts on forests and human well-being of three different PES programs instituted within two PAs in northern Cambodia, using a panel of intervention villages and matched controls. Both PES and PAs delivered additional environmental outcomes relative to the counterfactual: reducing deforestation rates significantly relative to controls. PAs increased security of access to land and forest resources for local households, benefiting forest resource users but restricting households' ability to expand and diversify their agriculture. The impacts of PES on household well-being were related to the magnitude of the payments provided. The two higher paying market-linked PES programs had significant positive impacts, whereas a lower paying program that targeted biodiversity protection had no detectable effect on livelihoods, despite its positive environmental outcomes. Households that signed up for the higher paying PES programs, however, typically needed more capital assets; hence, they were less poor and more food secure than other villagers. Therefore, whereas the impacts of PAs on household well-being were limited overall and varied between livelihood strategies, the PES programs had significant positive impacts on livelihoods for those that could afford to participate. Our results are consistent with theories that PES, when designed appropriately, can be a powerful new tool for delivering conservation goals whilst benefiting local people.


Assuntos
Agricultura , Biodiversidade , Conservação dos Recursos Naturais/economia , Agricultura Florestal , Florestas , Camboja
4.
PLoS One ; 7(10): e40482, 2012.
Artigo em Inglês | MEDLINE | ID: mdl-23077476

RESUMO

Conservation investment, particularly for charismatic and wide-ranging large mammal species, needs to be evidence-based. Despite the prevalence of this theme within the literature, examples of robust data being generated to guide conservation policy and funding decisions are rare. We present the first published case-study of tiger conservation in Indochina, from a site where an evidence-based approach has been implemented for this iconic predator and its prey. Despite the persistence of extensive areas of habitat, Indochina's tiger and ungulate prey populations are widely supposed to have precipitously declined in recent decades. The Seima Protection Forest (SPF), and broader Eastern Plains Landscape, was identified in 2000 as representing Cambodia's best hope for tiger recovery; reflected in its designation as a Global Priority Tiger Conservation Landscape. Since 2005 distance sampling, camera-trapping and detection-dog surveys have been employed to assess the recovery potential of ungulate and tiger populations in SPF. Our results show that while conservation efforts have ensured that small but regionally significant populations of larger ungulates persist, and density trends in smaller ungulates are stable, overall ungulate populations remain well below theoretical carrying capacity. Extensive field surveys failed to yield any evidence of tiger, and we contend that there is no longer a resident population within the SPF. This local extirpation is believed to be primarily attributable to two decades of intensive hunting; but importantly, prey densities are also currently below the level necessary to support a viable tiger population. Based on these results and similar findings from neighbouring sites, Eastern Cambodia does not currently constitute a Tiger Source Site nor meet the criteria of a Global Priority Tiger Landscape. However, SPF retains global importance for many other elements of biodiversity. It retains high regional importance for ungulate populations and potentially in the future for Indochinese tigers, given adequate prey and protection.


Assuntos
Animais Selvagens , Artiodáctilos , Conservação dos Recursos Naturais , Elefantes , Tigres , Animais , Camboja
5.
J Pediatr Pharmacol Ther ; 15(2): 126-37, 2010 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-22477803

RESUMO

BACKGROUND: Safety and efficacy issues regarding over-the-counter cough and cold (CAC) products for use in children have surfaced. Late in 2007 the FDA began reviewing CAC product status for use in children under 6 years old. OBJECTIVE: In regards to CAC products for children < 6 years old, to determine pharmacists: 1) comfort level in recommending; 2) attitudes towards behind-the-counter (BTC) status; and 3) level of support for BTC status. An additional objective was to determine how frequently pharmacists were asked for CAC product recommendations for children METHODS: Georgia Pharmacy Association members (2,045) were invited to anonymously participate in a self-administered online survey from January 3 - Feb 6, 2008. Topic areas included demographics, comfort in recommending CAC, and BTC status. RESULTS: Most responding pharmacists (99.1%) feel pediatric CAC medicine safety problems are due to inappropriate use. More than 50% of chain and independent pharmacists were asked to recommend CAC medicines for children during cold/flu season once a day or less, and 79% reported counseling on less than 50% of total CAC sales. The majority of pharmacists felt comfortable recommending CAC medications when thinking of both safety and efficacy. Most pharmacists supported a BTC condition of sale for children under two for decongestants, antihistamines, and antitussives, and for decongestants and antitussives for children between 2 and 5 years old. CONCLUSIONS: Most pharmacists indicate comfort in recommending CAC despite lack of evidence for safety or efficacy and support BTC status. Pharmacist education on this topic would be useful.

6.
J Environ Manage ; 67(4): 395-407, 2003 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-12710927

RESUMO

Habitat restoration at a landscape scale is becoming increasingly important in environmental management. In this context, geographical information systems are well suited as they can store and integrate many of the abiotic and biotic criteria used to assess the ecological worth of a site. However, this capacity can be limited by the availability or suitability of spatial data sets. A classic example of the latter case is the National Soil Map of England and Wales, which groups soils of a varied nature into associations. Consequently the national soil map has proved to be a poor predictor of habitat suitability. Using polytomous logistic regression we put forward a method for separating soil associations into their constituent soils within the Chilterns Natural Area. This approach used soil association, aspect, slope and relative height as variables for this analysis. Whilst the model's performance is likely to have been limited by the accuracy of the soil association data set, a predictive accuracy of between 47 and 65% is sufficient to facilitate better targeting of habitat restoration when combined with other abiotic factors such as climate and topography.


Assuntos
Conservação dos Recursos Naturais , Sistemas de Informação Geográfica , Modelos Teóricos , Solo , Clima , Coleta de Dados , Tomada de Decisões , Ecossistema , Monitoramento Ambiental , Geografia
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