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The Amazon Basin appears poised to experience rapid expansion of oil palm agriculture. Nearly half of Amazonia is suitable for oil palm cultivation, and Malaysian corporations are now moving into the region to establish new plantations while the Brazilian government is considering a law that would count oil palm as “forest” towards a landowner's forest reserve requirement. Strong economic incentives for a major Amazonian oil palm industry are likely, given growing global demands for edible oils, oil-based products, and biofuel feedstocks. We have two main concerns. First, oil palm plantations are ecologically depauperate, supporting little forest-dependent wildlife. Second, we disbelieve political and corporate statements suggesting that oil palm plantations will be concentrated on previously deforested lands in Amazonia. In reality, oil palm producers strongly favor clearing primary forest for plantations because they can reap immediate profits from timber production. These profits subsidize the costs of plantation establishment and maintenance for the initial 3-5 years until the oil palm plantations become profitable. Hence, oil palm agriculture could soon emerge as a major new threat to the Amazonian environment.
A Bacia Amazônica parece sofrer a experiencia da rápida expansão da agricultura de palmeiras de óleo. Quase metade da Amazonia é apropriada para o cultivo de palmeira de óleo, e corporações da Malásia estão agora se mudando para a região para estabelecer novas plantações enquanto o governo Brasileiro está considerando uma lei que contaria as plantações de palmeira de óleo como “florestas” em relação á exigencia de reserva florestal nas terras do proprietário. São prováveis fortes incentivos econômicos para uma grande industria de palmeira de óleo Amazonensse, dadas as crescentes demandas globais por óleos comestíveis, produtos baseados em óleo e combustiveis. Temos duas grandes preocupações. Primeira, as plantações de palmeira de óleo são ecologicamente pobres, suportanto pouquissima vida selvagem que depende da floresta. Segunda, nós desacreditamos em afirmações políticas e corporativas que sugerem que as plantações de palmeiras de óleo estarão concentradas em terras previamente desflorestadas da Amazônia. Na realidade, produtores de palmeiras de óleo sao fortemente a favor de desmatar florestas primárias para plantações porque assim eles podem obter lucros imediatos da produção de madeira. Esses lucros são vitais para compensar os gastos com custos do estabelecimento da plantação e manutenção dos 3–5 anos iniciais até que as plantações se tornem rentáveis. Portanto, a agricultura de palmeiras de óleo poderiam em breve emergir como uma nova grande ameaça para o meio ambiente da Amazônia.
Guatemala has claimed Belizean territory for 150 years, ever since the colonial era. While several attempts have been made to settle this dispute, with no final resolution, several problems both on the land and sea still exist, including illegal settlements, illegal logging, illegal hunting, illegal fishing, illegal harvesting of forest products, illegal farming, illegal land subdivisions, loss of property and threat to human life. These problems have created conflict between the two nations along with a series of confrontations among the military forces, communities, and fishermen in the two countries. A proposal facilitated by the Organization of American States for confidence-building measures between the two countries did not succeed. Both countries now seek to finalize the settlement at the International Court of Justice. This paper introduces the issue with a summary of the history of Belize's territory and the origins of the claim, followed by a summary of the treaties and negotiations agreed to between the two countries, important elements of the Belize Maritime Act, and a discussion of the implications for conservation and efforts made to resolve this conflict.
Deliveries of edible, endemic amphibians to a restaurant in eastern Madagascar were monitored over a five-month period in the 2008 austral summer. Each frog collector was interviewed on arrival and information was obtained on collection locality, methods, frequency, as well as recording the number of frogs delivered. A total of 3,233 frogs were delivered to the restaurant during the study, averaging 249 per week. All of the 21 interviews concerned frogs collected in forest habitats at night by teams of between one and three people. Collection occurred in four localities, one of which (Fierenana) necessitated public transport to deliver the frogs. Effort at Fierenana was typically higher than at other sites with collectors frequently spending at least one night in the forest and traveling around 8.3 hours between their homes and forest collection locations. Income generated went directly to the collectors, who always delivered the frogs in person, and supply was determined by their available time, frog abundance, and weather conditions. Although the restaurant had no stated minimum quantity for purchase, small frogs were refused and collectors aimed for a minimum of 60 large frogs per delivery. The income generated by local amphibian collectors at Fierenena was similar for non-threatened edible species destined for domestic consumption (0.29 US$) and the Critically Endangered Mantella milotympanum collected for overseas export (0.32 US$). The harvest of edible frogs provides important income for individual hunters but additional study is needed to investigate its impact on frog populations and to develop methods to link sustainable collection practices with forest management.
Conservation organizations often must rely on data collected quickly and cheaply to make informed decisions in unstudied regions. Butterflies represent an opportunity in this respect, in that many species can typically be sampled and identified in a short time and provide an indication of habitat or conservation value as well. During nine days of sampling in June 2008, we found and identified 84 butterfly species and 1,856 butterfly individuals at Playa El Icacal, Department of La Unión, El Salvador, using transect counts. Through species richness estimators and a ratio extrapolation based on a list of species expected to be found onsite, we sampled 40–60% of the butterfly community present. Species richness at the site is estimated to be between 100 and 200 species. Sites with small patches of dry forest (La Bocana and La Laguna) had higher species richness than sites without dry forest (Hacienda Casco, El Manglar, and El Esteron). While two weeks is not enough time to fully document the butterfly community in 20 km2 of neotropical coastal countryside, we were able to provide a valuable estimate of species richness and provide some information as to which areas in the region hold the most conservation value. We suggest using a list of widespread species with modified habitat associations for use as an inventory index for ratio extrapolation and discuss specific guidelines for future butterfly rapid assessments in Mesoamerica.
Random amplified polymorphic DNA markers (RAPD) were used to assess the genetic relatedness among accessions of four species of Desmodium and allied genera (Dendrolobium triangulare, Desmodium gangeticum, Desmodium heterocarpon ssp. heterocarpon, and Tadehagi triquetrum) originating from Northeast Vietnam. Since information on the genetic diversity of these species is deficient, the creation of baseline data is an important means for the development of more sustainable and cost-efficient conservation approaches which eventually result in more comprehensive ex situ germplasm collections. The species analyzed are native to tropical and subtropical Asia, Australia, and Oceania and possess a potential as forage and/or medicinal plants. Moderate levels of inter-accession diversity represented by 37.5% and 33.3% of polymorphic fragments (P%) and average Jaccard's similarity coefficients (JSCs) of 0.60 and 0.64 were found in D. heterocarpon and T. triquetrum, respectively, while moderate to high levels were detected in D. triangulare (P% = 52.9 and JSC = 0.61) and D. gangeticum (P% = 34.5 and JSC = 0.49). Mantel tests failed to reveal a correlation between geographic and genetic distances. Based on the results of this study, baseline data for further marker-assisted research are generated and future collecting and ex situ conservation strategies for the species studied are discussed.
Bushmeat hunting constitutes the most immediate threat to wildlife populations in the Udzungwa Mountains of the Eastern Afromontane biodiversity hotspot. This study assesses the impact of hunting by comparing densities of mammalian species between the little hunted West Kilombero Scarp Forest Reserve (WKSFR), the medium-hunted Udzungwa Scarp Forest Reserve (USFR) and the intensively hunted New Dabaga Ulongambi Forest Reserve (NDUFR). Of the 22 species recorded, 20 were present in WKSFR, 17 in USFR and 12 in NDUFR. Most large species (>40 kg.) were absent from hunted areas, while medium-sized species were reduced more than smaller species. Few traces of Abbott's duiker were observed in hunted areas and bush pig was reduced by more than 85% in hunted areas. Hunting appears to have little effect on relative abundance of primates, blue duiker, Harvey's duiker, aardvark, eastern tree hyrax, and giant pouched rat in USFR, at least for those areas surveyed. In NDUFR relative abundance of most mammals are reduced compared to the less hunted reserves. The exception is red colobus which were no less abundant than USFR. However in NDUFR, transects were placed in the best quality habitat for these habitat-sensitive monkeys, thus emphasising the additional role of habitat degradation. The effect of hunting appears to be proportional to the size of the species and the intensity of hunting, although effects of life history strategy, forest fragment size, isolation, and previous logging cannot be excluded. Reduction of hunting levels are paramount to the survival of large bodied species in USFR and for the continued presence of most species in NDUFR. This study furthermore constitutes an important baseline for monitoring the effect of current efforts to implement joint forest management in the Udzungwa Mountains.
The study on importance of traditional practices in conservation of medicinal plants in West Usambara Mountains, Tanzania was conducted by using focus group discussions, interviews, participant observation, and botanical survey. Nine traditional practices for conservation of wild plants were identified as domestication; beliefs in sacredness of trees; beliefs in sacred forests; respect of cultural forests; protection of plants at the burial sites; selective harvesting; secrecy; collection of deadwood for firewood, and use of energy-saving traditional stoves. Through botanical surveys of sacred forests, cultural forests, farms/homesteads, and burial sites, some 1,518 wild plants belonging to 100 species were identified. A large proportion (85%) of these plants had medicinal value. Of the 173 respondents, 82%, 81%, 74%, and 71% believed that sustainable use and conservation of medicinal plants can be achieved through secrecy, plant protection at burial sites, sacredness of plants and domestication, respectively. About 89% of the respondents pursued domestication (at least five plants each) and 70% had retained sacred trees (at least one tree each), of which the majority had medicinal value. Few respondents were aware of the positive role played by sacred forests and cultural forests (38% and 21%, respectively) in conservation of medicinal plants. It is concluded that the traditional management practices have a significant role in the conservation of biodiversity. This conservation role has a direct connection with human health since most of the plant species have medicinal value, which a majority of the rural people rely on. The paper recommends that traditional management practices should be encouraged since they serve a dual purpose as important conservation strategy and as an essential component of primary health care.
La evidencia existente indica que la extracción comercial de una especie puede afectar la abundancia y estructura de sus poblaciones. En Bolivia, el uso de la lagartija Liolaemus signifer en la medicina tradicional se remonta a épocas precolombinas. El uso tradicional de estos reptiles tiene como principal objetivo la cura de dolencias físicas y/o espirituales y los especímenes de mayor valor en el mercado son aquellos de mayor tamaño. En el presente estudio se comparan la estructura y la abundancia poblacional de L. signifer entre 10 sitios con extracción comercial y 10 sitios sin extracción comercial, como una aproximación al estudio del efecto de la cosecha sobre esos dos parámetros. Se predijo que en los sitios sometidos a cosecha, la abundancia sería menor y la estructura poblacional estaría sesgada hacia las clases de menor tamaño. La abundancia promedio de las poblaciones en las zonas con extracción comercial resultó significativamente menor que en aquellas no sometidas a extracción (10.8 vs 21.2 lagartijas observadas en 800 m, respectivamente); sin embargo, la estructura poblacional (por tamaños y sexos: 0.92 machos:1 hembra) no difirió entre sitios con y sin extracción. Los mecanismos que producirían estructuras poblacionales indistintas podrían ser: a) mayor mortalidad de crías, como consecuencia de la cosecha de las hembras, debido al cuidado parental indirecto que las crías reciben de la madre, b) las poblaciones simplemente alcanzan una nueva estructura poblacional estable al reducirse la densidad. Es recomendable no cazar hembras ni destruir las guaridas durante la extracción.
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