Browsing by Author "Burgess, Neil D."
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Item Bat assemblages in Tanzanian coastal forestsCockle, A.; Kock, D.; STUBLEFIELD, L.; Howell, Kim; Burgess, Neil D.Item Carbon storage, structure and composition of miombo woodlands in Tanzania’s Eastern Arc Mountains(Blackwell Publishing Ltd) Shirima, Deo D.; Munishi, Pantaleo K. T.; Lewis, Simon L.; Burgess, Neil D.; Marshall, Andrew R.; Balmford, A.; Swetnam, Ruth D.; Zahabu, E.MItem Carbon storage, structure and composition of miombo woodlands in Tanzania’s Eastern Arc Mountains(Blackwell Publishing Ltd, 2011) Shirima, Deo D.; Munishi, Pantaleo K. T.; Lewis, Simon L.; Burgess, Neil D.; Marshall, Andrew R.; Balmford, A.; Swetnam, Ruth D.; Zahabu, E.MWe determine the aboveground biomass and carbon stor- age (ABGC) of trees and the herbaceous layer in miombo woodland in the Eastern Arc Mountains (EAM) of Tanza- nia. In four 1-ha sample plots in Nyanganje and Kitonga Forests, we measured all trees ‡10 cm diameter alongside height and wood mass density. The plots contained an average of 20 tree species ha )1 (range 11–29) and 344 stems ha )1 (range 281–382) with Shannon diversity values of 1.05 and 1.25, respectively. We weighted nine previously published woody savannah allometric models based on whether: (i) the model was derived from the same geographical region; (ii) the model included tree height ⁄ - wood mass density in addition to stem diameter; and (iii) sample size was used to fit the model. The weighted mean ABGC storage from the nine models range from 13.5 ± 2 to 29.8 ± 5 Mg ha )1 . Measured ABGC storage in the herbaceous layer, using the wet combustion method, adds 0.55 ± 0.02 Mg C ha )1 . Estimates suggest that EAM miombo woodlands store a range of 13–30 Mg ha )1 of carbon. Although the estimates suggest that miombo woodlands store significant quantities of carbon, caution is required as this is the first estimate based on in situ data.Item Conservation implications of deforestation across an elevational gradient in the Eastern Arc Mountains, Tanzania(Elsevier) Burgess, Neil D.; Mbilinyi, Boniface; Gereau, Roy E.; Hall, Jaclyn; Lovett, JonItem Conservation implications of deforestation across an elevational gradient in the Eastern Arc Mountains, Tanzania(Elsevier, 2009-11) Burgess, Neil D.; Mbilinyi, Boniface; Gereau, Roy E.; Hall, Jaclyn; Lovett, JonDeforestation is a major threat to the conservation of biodiversity, especially within global centers of endemism for plants and animals. Elevation, the major environmental gradient in mountain regions of the world, produces a rapid turnover of species, where some species may exist only in narrow elevational ranges. We use newly compiled datasets to assess the conservation impact of deforestation on threatened trees across an elevational gradient within the Eastern Arc Mountains of Tanzania. The Eastern Arc has suffered an estimated 80% total loss in historical forest area and has lost 25% of forest area since 1955. Forest loss has not been even across all elevations. The upper montane zone (>1800 m) has lost 52% of its paleoecological forest area, 6% since 1955. Conversely, the submontane habitat (800–1200 m) has lost close to 93% of its paleoecological extent, 57% since 1955. A list of 123 narrowly endemic Tanzanian East- ern Arc tree taxa with defined and restricted elevational ranges was compiled and analyzed in regard to mountain block locations, elevational range, and area of forest within each 100 m elevational band. Half of these taxa have lost more than 90% of paleoecological forest habitat in their elevational range. When elevational range is considered, 98 (80%) of these endemic forest trees should have their level of extinc- tion threat elevated on the IUCN Red List. Conservation efforts in montane hotspots need to consider the extent of habitat changes both within and across elevations and target conservation and restoration efforts throughout these ecosystems’ entire elevational ranges.Item Deforestation in an African biodiversity hotspot: extent, variation and the effectiveness of protected areas(Elsevier) Green, Jonathan M.H.; Larrosa, Cecilia; Burgess, Neil D.; Balmford, Andrew; Johnston, Alison; Mbilinyi, Boniface P.; Platts, Philip J.; Coad, LaurenItem Deforestation in an African biodiversity hotspot: extent, variation and the effectiveness of protected areas(Elsevier, 2013-06) Green, Jonathan M.H.; Larrosa, Cecilia; Burgess, Neil D.; Balmford, Andrew; Johnston, Alison; Mbilinyi, Boniface P.; Platts, Philip J.; Coad, LaurenThe Eastern Arc Mountains of Tanzania show exceptional endemism that is threatened by high anthro- pogenic pressure leading to the loss of natural habitat. Using a novel habitat conversion model, we pres- ent a spatially explicit analysis of the predictors of forest and woodland conversion in the Eastern Arc over 25 years. Our results show that 5% (210 km 2 ) of evergreen forest and 43% (2060 km 2 ) of miombo woodland was lost in the Eastern Arc Mountains between 1975 and 2000. Important predictors of habitat conversion included distance to natural habitat edge, topography and measures of remoteness. The main conservation strategy in these mountains for the past 100 years has been to develop a network of pro- tected areas. These appear to have reduced rates of habitat loss and most remaining evergreen forest is now within protected areas. However, the majority of miombo woodland, an important source of eco- system services, lies outside formal protected areas, where additional conservation strategies may be needed.Item Getting ready for REDD+ in Tanzania: a case study of progress and challenges(Fauna & Flora International) Dalsgaard, SØren; Funder, Mikkel; Hagelberg, Niklas; Harrison, Paul; Haule, Christognus; Kabalimu, Kekilia; Kilahama, Felician; Kilawe, Edward; Lewis, Simon L.; Lovett, Jon C.; Lyatuu, Gertrude; Marshall, Andrew R.; Meshack, Charles; Miles, Lera; Milledge, Simon A.H.; Munishi, Pantaleo K.T.; Nashanda, Evarist; Shirima, Deo; Swetnam, Ruth D.; Willcock, Simon; Williams, Andrew; Zahabu, Eliakim; Burgess, Neil D.; Bahane, Bruno; Clairs, Tim; Danielsen, FinnItem Implementation and opportunity costs of reducing deforestation and forest degradation in Tanzania(2011 Macmillan Publishers Limited) Fisher, Brendan; Lewis, Simon L.; Burgess, Neil D.; Malimbwi, Rogers E.; Munishi, Panteleo K.; Swetnam, Ruth D.; Turner, Kerry; Willcock, Simon; Balmford, AndrewItem Implementation and opportunity costs of reducing deforestation and forest degradation in Tanzania(2011 Macmillan Publishers Limited, 2011) Fisher, Brendan; Lewis, Simon L.; Burgess, Neil D.; Malimbwi, Rogers E.; Munishi, Panteleo K.; Swetnam, Ruth D.; Turner, Kerry; Willcock, Simon; Balmford, AndrewThe Cancún Agreements provide strong backing for a REDDC (Reducing Emissions from Deforestation and Forest Degradation) mechanism whereby developed countries pay developing ones for forest conservation1. REDDC has potential to simultaneously deliver cost-effective climate change mitigation and human development2–5. However, most REDDC analysis has used coarse-scale data, overlooked important opportunity costs to tropical forest users4,5 and failed to consider how to best invest funds to limit leakage, that is, merely displacing deforestation6. Here we examine these issues for Tanzania, a REDDCcountry, by comparing district-scale carbon losses from deforestation with the opportunity costs of carbon conservation. Opportunity costs are estimated as rents from both agriculture and charcoal production (the most important proximate causes of regional forest conversion7–9). As an alternativewe also calculate the implementation costs of alleviating the demand for forest conversion—thereby addressing the problem of leakage—by raising agricultural yields on existing cropland and increasing charcoal fuel-use efficiency. The implementation costs exceed the opportunity costs of carbon conservation (medians of US$6.50 versus US$3.90 per Mg CO2), so effective REDDC policies may cost more than simpler estimates suggest. However, even if agricultural yields are doubled, implementation is possible at the competitive price of US$12 per Mg CO2.Item Land cover change and carbon emissions over 100 years in an African biodiversity hotspotWillcock, Simon; Phillips, Oliver L.; Platts, Philip J.; Swetnam, Ruth D.; Balmford, Andrew; Burgess, Neil D.; Ahrends, Antje; Bayliss, Julian; Doggart, Nike; Doody, Kathryn; Fanning, Eibleis; Green, Jonathan; Hall, Jaclyn; Howell, Kim; Lovett, Jon C.; Marchant, Rob A.; Marshall, Andrew R.; Mbilinyi, Boniface P.; Munishi, Pantaleo; Owen, Nisha; Jørgensen, Elmer T.; Lewis, Simon L.Item Mapping Socio-Economic Scenarios of Land Cover Change: A GIS Method to Enable Ecosystem Service Modelling(Elsevier) Swetnam, R. D.; Fisher, B.; Mbilinyi, B. P.; Munishi, P. K. T.; Willcock, S.; Ricketts, T.; Mwakalila, S.; Balmford, A.; Burgess, Neil D.; Marshall, A. R.; Lewis, S. L.Item Measuring, modeling and mapping ecosystem services in the Eastern Arc Mountains of Tanzania(SAGE) Fisher, Brendan; Turner, R. Kerry; Burgess, Neil D.; Swetnam, Ruth D.; Green, Jonathan; Green, Rhys E.; Kajembe, George; Kulindwa, Kassim; Lewis, Simon L.Item Mixed method approaches to evaluate conservation impact: evidence from decentralized forest management in Tanzania(Foundation for Environmental Conservation) Lund, Jens Friis; Burgess, Neil D.; Chamshama, Shabani A. O.; Dons, Klaus; Isango, Jack A.; Kajembe, George C.; Meilby, Henrik; Moyo, Francis; Ngaga, Yonika M.; Ngowi, Stephen E.; Njana, Marco A.; Mwakalukwa, Ezekiel E.; Skeie, Kathrine; Theilade, Ida; Treue, ThorstenItem Mixed method approaches to evaluate conservation impact: evidence from decentralized forest management in Tanzania(Foundation for Environmental Conservation, 2014-06-01) Lund, Jens Friis; Burgess, Neil D.; Chamshama, Shabani A. O.; Dons, Klaus; Isango, Jack A.; Kajembe, George C.; Meilby, Henrik; Moyo, Francis; Ngaga, Yonika M.; Ngowi, Stephen E.; Njana, Marco A.; Mwakalukwa, Ezekiel E.; Skeie, Kathrine; Theilade, Ida; Treue, ThorstenNearly 10% of the world’s total forest area is formally owned by communities and indigenous groups, yet knowledge of the effects of decentralized forest management approaches on conservation (and livelihood) impacts remains elusive. In this paper, the conservation impact of decentralized forest management on two forests in Tanzania was evaluated using a mixed method approach. Current forest condition, forest increment and forest use patterns were assessed through forest inventories, and changes in forest disturbance levels before and after the implementation of decentralized forest management were assessed on the basis of analyses of Landsat images. This biophysical evidence was then linked to changes in actual management practices, assessed through records, interviews and participatory observations, to provide ameasure of the conservation impact of the policy change. Both forests in the study were found to be in good condition, and extraction was lower than overall forest increment. Divergent changes in forest disturbance levels were in evidence following the implementation of decentralized forest management. The evidence from records, interviews and participatory observations indicated that decentralized management had led to increased control of forest use and the observed divergence in forest disturbance levels appeared to be linked to differences in theway that village-level forest managers prioritized conservation objectives and forest-based livelihood strategies. The study illustrates that a mixed methods approach comprises a valid and promising way to evaluate impacts of conservation policies, even in the absence of control sites. By carefully linking policy outcomes to policy outputs, such an approach not onlyidentifies whether such policies work as intended, but also potential mechanisms.Item Quantifying and understanding carbon storage and sequestration within the Eastern Arc Mountains of Tanzania, a tropical biodiversity hotspotWillcock, Simon; Phillips, Oliver L.; Platts, Philip J.; Balmford, Andrew; Burgess, Neil D.; Lovett, Jon C.; Ahrends, Antje; Bayliss, Julian; Doggart, Nike; Doody, Kathryn; Fanning, Eibleis; Green, Jonathan; Hall, Jaclyn; Howell, Kim; Marchant, Rob A.; Marshall, Andrew R.; Mbilinyi, Boniface P.; Munishi, Pantaleo; Owen, Nisha; Swetnam, Ruth D.; Jørgensen, Elmer T.; Lewis, Simon L.Item REDD herrings or REDD menace: response to beymer-farris and bassett(Elsevier) Munishi, Pantaleo; Burgess, Neil D.; Mwakalila, Shadrack; Marion, Pfeifer; Willcock, Simon; Shirima, Deo; Hamidu, Seki; Bulenga, George B; Jason, Rubens; Haji, Machano; Rob, MarchantItem Tanzania's reptile biodiversity: Distribution, threats and climate change vulnerabilityMeng, Han; Carr, Jamie; Beraducc, Joe; Bowles, Phil; Branch, William R.; Capitani, Claudia; Chenga, Jumapili; Cox, Neil; Howell, Kim; Malonza, Patrick K.; Marchant, Rob A.; Mbilinyi, Boniface P.; Mukama, Kusaga; Msuya, Charles; Platts, Philip J.; Safari, Ignas; Spawls, Stephen; Farpon, Yara S.; Wagner, Philipp; Burgess, Neil D.Item The biological importance of the Eastern Arc Mountain of Tanzania and KenyaBurgess, Neil D.; Butynski, Thomas M.; Cordeiro, Norbert J.; Doggart, Nike; Fjeldså, Jon; Howell, Kim; Kilahama, Felician B.; Loader, Simon; Lovett, Jon C.; Mbilinyi, Boniface P.; Menegon, Michele; Moyer, David; Nashanda, Evarist; Perkin, Andrew; Rovero, Francesco; Stanley, William T.; Stuart, Simon N.Item The Forgotten ‘Coastal Forests’ of Mtwara, Tanzania: A Biologically Impoverished and Yet Important EcosystemWegner, Giulia; Howell, Kim; Davenport, Tim R. B.; Burgess, Neil D.