The conservation of world forests is an important measure in order to address the ever-worsening consequences of climate change. Tanzania has over 34 million hectares of forests and woodland habitats (more than 30% of the whole country). This report concludes that REDD strategies in Tanzania should be integrated with, and improve upon, current conservation strategies.Resource Type: Reports
Swietenia macrophylla King (Meliaceae: Swietenioideae) provides one of the premier timbers of the world. The mahogany shoot borer Hypsipyla robusta Moore (Lepidoptera: Pyralidae) is an economically important pest of S. macrophylla throughout Asia, Africa and the Pacific. No viable method of controlling this pest is known. Previous observations have suggested that the presence of overhead shade may reduce attack by H. robusta, but this has not been investigated experimentally. This research was therefore designed to assess the influence of light availability on shoot-borer attack on S. macrophylla, by establishing seedlings under three different artificial shade regimes, then using these seedlings to test oviposition preference of adult moths, neonate larval survival and growth and development of shoot borer larvae.
The results indicate that shading of mahogany seedlings may reduce the incidence of shoot borer attack, by influencing both oviposition and larval development. The establishment of mahogany under suitable shade regimes may therefore provide a basis for controlling shoot borer attack using silvicultural approaches.Resource Type: Journal Papers
Using global scale maps and statistics, we estimate that the conversion of all vulnerable tropical forests to the most valuable other land use at each location could lead to emissions of 670 Gt carbon dioxide (CO2). We then evaluate the role of the global protected area network in preventing emissions from tropical deforestation.Resource Type: Reports
Biodiversity Loss and Conservation in Fragmented Forest Landscapes is the product of over 10 years of intensive field research into the changing montane and temperate rainforests of Mexico and South America. By concentrating on these largely overlooked environments, the studies reported allow for comparative analysis across areas and help identify how human disturbance has impacted the biodiversity of all forest types. Chapters incorporate features of landscape ecology, floristic biodiversity, conservation and policy and vary from in-depth investigations of a single study area to integrated examinations across regions.Resource Type: Reports
The paper provides an analysis of the ecosystem-derived multiple benefits of REDD+.
The terminology around multiple benefits is not yet clear cut. Here, the different terms in use are reviewed and suggestions are made about how terms can be used in a consistent way.Resource Type: Reports
Agricultural lands are essential for providing food and forage for maintaining a healthy environment. Growing human populations are placing increasing demands for new lands for agricultural production. At the same time, there is a need to maintain or increase our forest cover for biodiversity and carbon sequestration. Unfortunately, our land base is limited. Consequently, there is strong competition between those lands will be used for forestry and those that will be used for agriculture. Current assessments of agriculture and forested lands are often carried out by separate entities. Often, there is duplication of data collection, information gaps, etc. The bottom line is that we do not really know how much land currently serves the needs of agriculture and forestry, which lands are best suited for conversion to alternate use, and where they are located. In order for decision makers to make more informed decisions, we need complete and up-to-date geo-referenced inventories. The purpose of this paper is to discuss the problems of separate resource inventories and to present ways to overcome these problems by integrated assessments.Resource Type: Journal Papers
Spoon-billed Sandpiper Eurynorhynchus pygmeus is classed as globally Vulnerable, based on the only available population estimate, made in 1977, of 2,000-2,800 pairs. Surveys for breeding Spoon-billed Sandpipers were carried out in summer 2000 on the Anadyr estuary coast, the Chukotka autonomous region, Russia. Although six new breeding sites were found, only 16-17 breeding males/pairs were recorded on the northern coast of the Anadyr estuary and five males/pairs on the southern coast and more southerly lagoons. These numbers were much lower than expected, and the species was not recorded in several apparently suitable areas.Resource Type: Journal Papers
Reports of rapid growth in nature-based tourism and recreation add significant weight to the economic case for biodiversity conservation but seem to contradict widely voiced concerns that people are becoming increasingly isolated from nature. This apparent paradox has been highlighted by a recent study showing that on a per capita basis, visits to natural areas in the United States and Japan have declined over the last two decades. These results have been cited as evidence of "a fundamental and pervasive shift away from nature-based recreation"-but how widespread is this phenomenon? We address this question by looking at temporal trends in visitor numbers at 280 protected areas (PAs) from 20 countries.Resource Type: Journal Papers
Incorporating and utilising spatial data and mapping for NBSAPs: Guidance to support NBSAP practitionersResource Type: Reports
Feeding a rapidly expanding human population will require a large increase in the supply of agricultural products during the coming decades. This may lead to the transformation of many landscapes from natural vegetation cover to agricultural land use, unless increases in crop yields reduce the need for new farmland. Here, we assess the evidence that past increases in agricultural yield have spared land for wild nature. We investigated the relationship between the change in the combined energy yield of the 23 most energetically important food crops over the period 1979–1999 and the change in per capita cropland area for 124 countries over the same period.
Our results show that land-sparing is a weak process that occurs under a limited set of circumstances, but that it can have positive outcomes for the conservation of wild nature.Resource Type: Journal Papers
©2014 UNEP All rights reserved