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1.
Ecol Appl ; 20(6): 1721-32, 2010 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-20945770

RESUMEN

Alternative land uses make different contributions to the conservation of biodiversity and have different implementation and management costs. Conservation planning analyses to date have generally assumed that land is either protected or unprotected, and that the unprotected portion does not contribute to conservation goals. We develop and apply a new planning approach that explicitly accounts for the contribution of a diverse range of land uses to achieving conservation goals. Using East Kalimantan (Indonesian Borneo) as a case study, we prioritize investments in alternative conservation strategies and account for the relative contribution of land uses ranging from production forest to well-managed protected areas. We employ data on the distribution of mammals and assign species-specific conservation targets to achieve equitable protection by accounting for life history characteristics and home range sizes. The relative sensitivity of each species to forest degradation determines the contribution of each land use to achieving targets. We compare the cost effectiveness of our approach to a plan that considers only the contribution of protected areas to biodiversity conservation, and to a plan that assumes that the cost of conservation is represented by only the opportunity costs of conservation to the timber industry. Our preliminary results will require further development and substantial stakeholder engagement prior to implementation; nonetheless we reveal that, by accounting for the contribution of unprotected land, we can obtain more refined estimates of the costs of conservation. Using traditional planning approaches would overestimate the cost of achieving the conservation targets by an order of magnitude. Our approach reveals not only where to invest, but which strategies to invest in, in order to effectively and efficiently conserve biodiversity.


Asunto(s)
Agricultura , Biodiversidad , Conservación de los Recursos Naturales , Vivienda , Borneo , Humanos , Árboles
2.
Nat Commun ; 11(1): 5978, 2020 12 08.
Artículo en Inglés | MEDLINE | ID: mdl-33293507

RESUMEN

Many global environmental agendas, including halting biodiversity loss, reversing land degradation, and limiting climate change, depend upon retaining forests with high ecological integrity, yet the scale and degree of forest modification remain poorly quantified and mapped. By integrating data on observed and inferred human pressures and an index of lost connectivity, we generate a globally consistent, continuous index of forest condition as determined by the degree of anthropogenic modification. Globally, only 17.4 million km2 of forest (40.5%) has high landscape-level integrity (mostly found in Canada, Russia, the Amazon, Central Africa, and New Guinea) and only 27% of this area is found in nationally designated protected areas. Of the forest inside protected areas, only 56% has high landscape-level integrity. Ambitious policies that prioritize the retention of forest integrity, especially in the most intact areas, are now urgently needed alongside current efforts aimed at halting deforestation and restoring the integrity of forests globally.


Asunto(s)
Biodiversidad , Conservación de los Recursos Naturales/estadística & datos numéricos , Política Ambiental , Bosques , África Central , Canadá , Cambio Climático , Conservación de los Recursos Naturales/legislación & jurisprudencia , Nueva Guinea , Federación de Rusia
3.
Conserv Biol ; 23(4): 834-40, 2009 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-19627315

RESUMEN

Oceania is a diverse region encompassing Australia, Melanesia, Micronesia, New Zealand, and Polynesia, and it contains six of the world's 39 hotspots of diversity. It has a poor record for extinctions, particularly for birds on islands and mammals. Major causes include habitat loss and degradation, invasive species, and overexploitation. We identified six major threatening processes (habitat loss and degradation, invasive species, climate change, overexploitation, pollution, and disease) based on a comprehensive review of the literature and for each developed a set of conservation policies. Many policies reflect the urgent need to deal with the effects of burgeoning human populations (expected to increase significantly in the region) on biodiversity. There is considerable difference in resources for conservation, including people and available scientific information, which are heavily biased toward more developed countries in Oceania. Most scientific publications analyzed for four threats (habitat loss, invasive species, overexploitation, and pollution) are from developed countries: 88.6% of Web of Science publications were from Australia (53.7%), New Zealand (24.3%), and Hawaiian Islands (10.5%). Many island states have limited resources or expertise. Even countries that do (e.g., Australia, New Zealand) have ongoing and emerging significant challenges, particularly with the interactive effects of climate change. Oceania will require the implementation of effective policies for conservation if the region's poor record on extinctions is not to continue.


Asunto(s)
Biodiversidad , Conservación de los Recursos Naturales , Ambiente , Animales , Contaminación Ambiental , Humanos , Oceanía
5.
Curationis ; 23(1): 43-52, 2000 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-11140029

RESUMEN

The priority of the National Health System in South Africa is primary health care (PHC). The approach involves a health system led by PHC services and includes personal and curative services for acute minor ailments delivered by PHC nurses. The nurses are also responsible for the treatment of these ailments with essential drugs according to protocols as proposed in the Essential Drugs List. A before-after experimental research design was used to evaluate the effect of a competency-based primary care drug therapy (PCDT) training programme for PHC nurses in the treatment of acute minor ailments. An experimental group (n = 35) and control group (n = 31) consisting of registered nurses undergoing training in PHC at Gold Fields Nursing College were randomly selected. The results showed a significant increase in prescribing outcomes and medicine utilisation.


Asunto(s)
Enfermería en Salud Comunitaria/educación , Quimioterapia , Evaluación Educacional , Humanos , Evaluación de Programas y Proyectos de Salud , Sudáfrica , Estomatitis Herpética/tratamiento farmacológico
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