5 results on '"Rayden T"'
Search Results
2. Spatial priorities for conserving the most intact biodiverse forests within Central Africa
- Author
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Grantham, H.S., Shapiro, Aurélie C., Bonfils, D., Gond, Valéry, Goldman, E., Maisels, F., Plumptre, Andrew J., Rayden, T., Robinson, J.G., Strindberg, S., Stokes, A., Tulloch, A.I.T.T., Watson, J.E.M., Williams, L., Rickenbach, Olivia, Grantham, H.S., Shapiro, Aurélie C., Bonfils, D., Gond, Valéry, Goldman, E., Maisels, F., Plumptre, Andrew J., Rayden, T., Robinson, J.G., Strindberg, S., Stokes, A., Tulloch, A.I.T.T., Watson, J.E.M., Williams, L., and Rickenbach, Olivia
- Abstract
The forests of Central Africa contain some of Earth's few remaining intact forests. These forests are increasingly threatened by infrastructure development, agriculture, and unsustainable extraction of natural resources (e.g. minerals, bushmeat, and timber), all of which is leading to deforestation and forest degradation, particularly defaunation, and hence causing declines in biodiversity and a significant increase in carbon emissions. Given the pervasive nature of these threats, the global importance of Central African forests for biodiversity conservation, and the limited resources for conservation and sustainable management, there is a need to identify where the most important areas are to orientate conservation efforts. We developed a novel approach for identifying spatial priorities where conservation efforts can maximize biodiversity benefits within Central Africa's most intact forest areas. We found that the Democratic Republic of Congo has the largest amount of priority areas in the region, containing more than half, followed by Gabon, the Republic of Congo and Cameroon. We compared our approach to one that solely prioritizes forest intactness and one that aims to achieve only biodiversity representation objectives. We found that when priorities are only based on forest intactness (without considering biodiversity representation), there are significantly fewer biodiversity benefits and vice versa. We therefore recommend multi-objective planning that includes biodiversity representation and forest intactness to ensure that both objectives are maximized. These results can inform various types of conservation strategies needed within the region, including land-use planning, jurisdictional REDD + initiatives, and performance related carbon payments, protected area expansion, community forest management, and forest concession plans.
- Published
- 2020
3. Spatial priorities for conserving the most intact biodiverse forests within Central Africa
- Author
-
Grantham, H. S., Shapiro, Aurélie, Bonfils, D., Gond, Valery, Goldman, E., Maisels, Fiona, Plumptre, Andrew J., Rayden, T., Robinson, J. G., Strindberg, Samantha, Stokes, E., Tulloch, A. I.T.T., Watson, J. E.M., Williams, L., Rickenbach, O., Grantham, H. S., Shapiro, Aurélie, Bonfils, D., Gond, Valery, Goldman, E., Maisels, Fiona, Plumptre, Andrew J., Rayden, T., Robinson, J. G., Strindberg, Samantha, Stokes, E., Tulloch, A. I.T.T., Watson, J. E.M., Williams, L., and Rickenbach, O.
- Abstract
The forests of Central Africa contain some of Earth's few remaining intact forests. These forests are increasingly threatened by infrastructure development, agriculture, and unsustainable extraction of natural resources (e.g. minerals, bushmeat, and timber), all of which is leading to deforestation and forest degradation, particularly defaunation, and hence causing declines in biodiversity and a significant increase in carbon emissions. Given the pervasive nature of these threats, the global importance of Central African forests for biodiversity conservation, and the limited resources for conservation and sustainable management, there is a need to identify where the most important areas are to orientate conservation efforts. We developed a novel approach for identifying spatial priorities where conservation efforts can maximize biodiversity benefits within Central Africa's most intact forest areas. We found that the Democratic Republic of Congo has the largest amount of priority areas in the region, containing more than half, followed by Gabon, the Republic of Congo and Cameroon. We compared our approach to one that solely prioritizes forest intactness and one that aims to achieve only biodiversity representation objectives. We found that when priorities are only based on forest intactness (without considering biodiversity representation), there are significantly fewer biodiversity benefits and vice versa. We therefore recommend multi-objective planning that includes biodiversity representation and forest intactness to ensure that both objectives are maximized. These results can inform various types of conservation strategies needed within the region, including land-use planning, jurisdictional REDD + initiatives, and performance related carbon payments, protected area expansion, community forest management, and forest concession plans.
- Published
- 2020
4. Improving climate and biodiversity outcomes through restoration of forest integrity.
- Author
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Rayden T, Jones KR, Austin K, and Radachowsky J
- Subjects
- Biodiversity, Agriculture, Climate Change, Ecosystem, Conservation of Natural Resources, Forests
- Abstract
Targeting degraded areas in forested landscapes for restoration could deliver rapid climate mitigation and biodiversity conservation, improve resilience of forested lands to future climate change, and potentially reduce the trade-offs between nature recovery and agriculture. Although the importance of forest restoration for climate mitigation is acknowledged, current estimates of its climate mitigation potential may be underestimated because they focus predominantly on reforesting cleared areas. We built on recent analyses of forest integrity and unrealized forest biomass potential to examine the potential for restoring the integrity of degraded forests. There are over 1.5 billion ha of forests worldwide that retain 50-80% of their potential biomass. Prioritizing restoration in these areas could deliver rapid biodiversity and climate mitigation benefits, relative to restoring forest on cleared land. We applied a spatial planning approach to demonstrate how restoration interventions can be targeted to support the conservation of high-integrity forest, a potential pathway to the delivery of the 30×30 goal of the Convention on Biodiversity's Global Biodiversity Framework., (© 2023 The Authors. Conservation Biology published by Wiley Periodicals LLC on behalf of Society for Conservation Biology.)
- Published
- 2023
- Full Text
- View/download PDF
5. Guns, germs, and trees determine density and distribution of gorillas and chimpanzees in Western Equatorial Africa.
- Author
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Strindberg S, Maisels F, Williamson EA, Blake S, Stokes EJ, Aba'a R, Abitsi G, Agbor A, Ambahe RD, Bakabana PC, Bechem M, Berlemont A, Bokoto de Semboli B, Boundja PR, Bout N, Breuer T, Campbell G, De Wachter P, Ella Akou M, Esono Mba F, Feistner ATC, Fosso B, Fotso R, Greer D, Inkamba-Nkulu C, Iyenguet CF, Jeffery KJ, Kokangoye M, Kühl HS, Latour S, Madzoke B, Makoumbou C, Malanda GF, Malonga R, Mbolo V, Morgan DB, Motsaba P, Moukala G, Mowawa BS, Murai M, Ndzai C, Nishihara T, Nzooh Z, Pintea L, Pokempner A, Rainey HJ, Rayden T, Ruffler H, Sanz CM, Todd A, Vanleeuwe H, Vosper A, Warren Y, and Wilkie DS
- Subjects
- Africa, Animals, Geography, Models, Theoretical, Population Density, Population Dynamics, Firearms, Gorilla gorilla, Pan troglodytes, Trees
- Abstract
We present a range-wide assessment of sympatric western lowland gorillas Gorilla gorilla gorilla and central chimpanzees Pan troglodytes troglodytes using the largest survey data set ever assembled for these taxa: 59 sites in five countries surveyed between 2003 and 2013, totaling 61,000 person-days of fieldwork. We used spatial modeling to investigate major drivers of great ape distribution and population trends. We predicted density across each taxon's geographic range, allowing us to estimate overall abundance: 361,900 gorillas and 128,700 chimpanzees in Western Equatorial Africa-substantially higher than previous estimates. These two subspecies represent close to 99% of all gorillas and one-third of all chimpanzees. Annual population decline of gorillas was estimated at 2.7%, maintaining them as Critically Endangered on the International Union for Conservation of Nature and Natural Resources (IUCN) Red List. We quantified the threats to each taxon, of which the three greatest were poaching, disease, and habitat degradation. Gorillas and chimpanzees are found at higher densities where forest is intact, wildlife laws are enforced, human influence is low, and disease impacts have been low. Strategic use of the results of these analyses could conserve the majority of gorillas and chimpanzees. With around 80% of both subspecies occurring outside protected areas, their conservation requires reinforcement of anti-poaching efforts both inside and outside protected areas (particularly where habitat quality is high and human impact is low), diligent disease control measures (including training, advocacy, and research into Ebola virus disease), and the preservation of high-quality habitat through integrated land-use planning and implementation of best practices by the extractive and agricultural industries.
- Published
- 2018
- Full Text
- View/download PDF
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