Restoration Provides Hope for Faunal Recovery: Changes in Primate Abundance Over 45 Years in Kibale National Park, Uganda

Chapman, Colin A.; Omeja, Patrick A.; Kalbitzer, Urs; Fan, Penglai; Lawes, Michael J.

doi:10.1177/1940082918787376

Cited by 9 publications

(11 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, ~60 million ha of tropical forest, equivalent to the area of Madagascar, were lost from 2002 to 2019 (Weisse & Gladman, 2020). As forests in the tropics continue to undergo rapid conversion to agricultural and pastoral lands, it is becoming increasingly clear that the survival of many forest species will depend on the capacity of disturbed forests to be restored and support plant and animal populations (Chapman et al, 2018; Omeja et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

The effects of the invasive species, Lantana camara, on regeneration of an African rainforest

et al. 2023

Self Cite

View full text Add to dashboard Cite

Invasive plants adversely affect native communities by altering ecosystem function and disrupting natural regeneration. We investigate the effect of invasive Lantana camara L. (Verbenaceae) on forest regeneration in Kibale National Park, Uganda. We appraise the efficacy of cutting and uprooting Lantana for promoting native tree recruitment. Sample plots comprised three types: (i) currently invaded by Lantana; (ii) cleared of Lantana and now managed; and (iii) forest reference plots uninvaded by Lantana. Tree species numbering 51, 19 shrubs, and 17 herb species were identified.Lantana reduced tree, shrub, and herb cover and diversity, and suppressed tree regeneration. The short-term management of Lantana did not promote tree establishment.The tree community in cleared areas was not converging on uninvaded adjacent forest. Lantana is known to allelopathically suppress tree seedling establishment, but even at sites cleared of Lantana, tree species recruitment was poor. While insufficient time may have passed for tree recruitment, we argue that an increase in shrub and herb cover and diversity arrested forest tree regeneration. Sustained follow-up clearing of dense secondary shrubs and herbs and resprouted L. camara in cleared areas is key to ensuring long-term recovery of the forest tree community. K E Y W O R D S carbon-offset projects, forest regeneration, invasive alien species, restoration ecology, tropical forest management Résumé Les plantes envahissantes nuisent aux communautés indigènes en modifiant la fonction des écosystèmes et en perturbant la régénération naturelle. Nous étudions les effets de l'envahissant Lantana camara L. (Verbenaceae) sur la régénération de la forêt dans le parc national de Kibale, en Ouganda. Nous évaluons l'efficacité de la coupe et du déracinement du Lantana pour promouvoir le recrutement d'arbres indigènes. Les parcelles d'échantillonnage étaient de trois types: (i) actuellement envahies par le Lantana; (ii) débarrassées du Lantana et maintenant gérées; et (iii) parcelles de référence This is an open access article under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non-commercial and no modifications or adaptations are made.

show abstract

Section: Introductionmentioning

confidence: 99%

The effects of the invasive species, Lantana camara, on regeneration of an African rainforest

et al. 2023

Self Cite

View full text Add to dashboard Cite

show abstract

Section: Introductionmentioning

confidence: 99%

“…In this context, monitoring primate populations in tropical forests affected by human impact is critical, and an effective approach is to contrast populations from areas with similar ecological characteristics but different protection levels and anthropogenic disturbance (e.g., Chapman et al, 2010; McLester et al, 2019; Oberosler et al, 2020; Rovero et al, 2012). However, primate monitoring programs that span over a sufficient period to enable evaluation of temporal trends, and potential recovery following conservation interventions, are surprisingly few (e.g., Chapman et al, 2000, 2018). Factors that can prevent success of these programs include the difficulties in ensuring continuous and consistent data collection in the long‐term due to lack of funding, diversification in the use of protocols and inter‐observer variability, all of which may lead to data biases or data gaps (e.g., Rovero et al, 2015); moreover, primates are long‐lived animals with a slow life history, and hence, recovery may, at best, be detected several years after perturbation or improved conservation (Strier & Ives, 2012).…”

Section: Introductionmentioning

confidence: 99%

Long‐term dynamics of wild primate populations across forests with contrasting protection in Tanzania

et al. 2023

View full text Add to dashboard Cite

Anthropogenic activities driving tropical forests' loss imperil global biodiversity and provision of ecosystem services. In this context, systematic monitoring programs evaluating wildlife trends are essential. Non-human primates are relevant conservation targets since they represent vital components of tropical forests by serving as pollinators and seed dispersers. Here, we present primate group counts data collected over 19 years in a primate hotspot in Tanzania. We analyzed data with a hierarchical dynamic model accounting for imperfect detection that estimates local group abundance and temporal rates of change, to assess whether habitat protection explained trends of the arboreal and diurnal Peters' Angola colobus (Colobus angolensis palliatus), Udzungwa red colobus (Piliocolobus gordonorum), and Tanzania Sykes' monkey (Cercopithecus mitis subsp. moloneyi). We targeted populations occurring in two forest blocks with contrasting protection regimes, with one block impacted by targeted poaching of the two Colobus species. We found that these latter species were much less abundant in the more human impacted forest, underwent a rapid decline, and subsequently remained at low abundance and without signs of recovery once this forest was granted greater protection. Instead, Sykes' abundance did not differ between forests, and improved protection was associated with a slight increase in abundance.Age class composition for social groups of both Colobus species differed between forests, indicating altered births and survivorship rates in the impacted forest. Results suggest that targeted hunting can prevent recovery for several years and even after increased habitat protection. Our approach appears valuable to monitor population dynamics over the long term, highlighting species-specific variations in both vulnerability to anthropogenic disturbance and recovery patterns in primate populations.

show abstract

“…Systematic methods such as line-transect surveys and occupancy models are wellestablished techniques to assess distribution patterns as they can provide detailed quantitative data and be replicated for long-term monitoring (Baker et al 2011;Chapman et al 2018;Fashing et al 2012;Keane et al 2012). In regions where little or no preliminary research has been carried out, however, reconnaissance surveys can provide a vital initial step by documenting the presence or absence of a particular species within its potential range, the habitats it occupies, and the conservation threats it faces, important steps for identifying suitable locations for long-term studies, designing conservation management plans, and providing data for IUCN assessments (Bersacola et al 2018;Mekonnen et al 2012;Plumptre 2000;Plumptre et al 2002).…”

Section: Introductionmentioning

confidence: 99%

Distribution and conservation status of Boutourlini’s blue monkey (Cercopithecus mitis boutourlinii), a Vulnerable subspecies endemic to western Ethiopia

et al. 2020

View full text Add to dashboard Cite

Reliable data on the distribution and threats facing primate species are crucial to identifying priority sites for conservation and designing effective management plans. Boutourlini's blue monkey (Cercopithecus mitis boutourlinii) is a little-known arboreal primate endemic to the forests of western Ethiopia. This subspecies is categorized as Vulnerable on the IUCN Red list and the distribution of extant populations is largely unknown. To increase our knowledge of the spatial distribution and conservation status of Boutourlini's blue monkey, we carried out intensive reconnaissance surveys from January 2010 to May 2011 across ~40% of its potential range and conducted interviews with local people at each of the survey locations. We carried out geospatial analyses and mapped the distribution of Boutourlini's blue monkey localities with respect to elevation, protected area status, and changes in forest cover over time using ArcGIS 10.4.0. Through our surveys, we discovered 30 previously unknown Boutourlini's blue monkey populations in three administrative regions of western Ethiopia (Amhara, Oromia, and Southern Nations, Nationalities and People's Regions). A total of 34 different groups were sighted and counted at the survey sites, averaging 14.7 members (range: 8-23) per group. There are now 32 Boutourlini's blue monkeys populations of recently confirmed occurrence at altitudes ranging from 1039 -2780 m asl, seven in forests of >50 km 2 . Crop feeding by Boutourlini's blue monkeys was reported by people at seven sites and confirmed through direct observation at three of these sites. None of the known extant populations of Boutourlini's blue monkeys occur within a strictly protected area (e.g., National Park) where exploitative human activities are outlawed. A complete reassessment of the distribution and conservation status of Boutourlini's blue monkeys will require further surveys across the remaining ~60% of its potential range.

show abstract

Restoration Provides Hope for Faunal Recovery: Changes in Primate Abundance Over 45 Years in Kibale National Park, Uganda

Cited by 9 publications

References 23 publications

The effects of the invasive species, Lantana camara, on regeneration of an African rainforest

The effects of the invasive species, Lantana camara, on regeneration of an African rainforest

Long‐term dynamics of wild primate populations across forests with contrasting protection in Tanzania

Distribution and conservation status of Boutourlini’s blue monkey (Cercopithecus mitis boutourlinii), a Vulnerable subspecies endemic to western Ethiopia

Contact Info

Product

Resources

About