Forest Reserve Research Articles

Vegetation Structure, Composition and Plant Community types in Tropical Dry Deciduous Forests of Jaipur, Rajasthan, India

The research was carried out in the Aravalli Forests of Nahargarh (NWLS) and Jamwa Ramgarh Wildlife Sanctuaries (JRWLS) of Jaipur, Rajasthan, India. The vegetation structure, composition, biodiversity and plant community types were assessed across the five forest stands viz Nahargarh biological park (S1), Nahargarh Sanctuary (S2) in NWLS and Ramgarh (S3), Raisar (S4), and Digota (S5) of JRWLS, respectively. A total of 164 qaudrats of 20*20 m2 were laid to assess the vegetation data including frequency, basal area, density, importance value index (IVI), biodiversity indices (Shannon-weiner, Simpson, Pielou and Margalef’s) and plant community types. The tree basal area ranged between 18.56 -34.36 m2/ha while stand density was 923-1433 tree/ha. Our study indicated the dominance of family Fabaceae with 20 species and 11 genera with Anogeissus pendula showing the maximum frequency, density, mean basal area and IVI. Further, the agglomerative hierarchal clustering showed five types of plant communities with Anogeissus-Adhatoda as the most widely spread community in these forests. Among the two sanctuaries, species diversity was higher for JRWLS (2.83) than NWLS (2.80). The current study provides important baseline data for forthcoming research on monitoring and preserving these forest’s biological diversity. The significance of present study will provide insight into the structure and variety of tree species in tropical dry deciduous forests.

A Checklist of Butterflies in Ananda Tea Estate and its Adjacent Areas of Lakhimpur District, Assam, India

In the present study, a checklist of butterflies from the Ananda Tea Estate of Lakhimpur district, Assam is prepared and presented. During the study, surveys were carried out from October 2022 to April 2024 in the Ananda tea estate (27°27' N and 94°14' E) and its nearby areas– Dulung reserve forest and Subansiri river. A total of 36 species across 32 genera belonging to five families viz., Nymphalidae, Pieridae, Papilionidae, Lycaenidae, Riodinidae were recorded during the study. Amongst all the families, Nymphalidae was the most diverse family comprising 17 species which belong to 16 different genera. Approximately 48% of the recorded species belong to the Nymphalidae family, indicating the highest species richness. The dominant nature of the family Nymphalidae can be attributed to the polyphagous nature of the species under the family which help them to live in diverse habitats. The species Common albatross (Appias albina), recorded during the study, is protected under Schedule II of the Wildlife (Protection) Amendment Act, 2022 of India. The Whittaker β-diversity was found to be 0.6875, indicating a moderate level of species turnover among the study sites. In the tea estate, due to the spraying of chemical pesticides large number of butterflies die each year which can be saved by replacing the chemical pesticides with biopesticides and other eco-friendly pest control methods including use of botanicals, Indigenous Technical Knowledge (ITKs) and microbial antagonists.

Assessment of Species-Based Ecosystem Services and Its Usefulness in Forest-Savanna Ecological Zone

Forest ecosystems are the main species rich ecosystem on earth, having a significant role in the provision of massive benefits to the populace who depended on them for sustenance. This study aimed at assessing the forest provisioning ecosystem service and use in Ihiala Local Government Area of Anambra State, Nigeria. The objectives of this study include the identification of forest provisioning ecosystem services and their uses, people’s dependence for livelihood and quantity of ecosystem services supplied by community forests. Stratified sampling technique was used to select 8 sampled communities while Nikolopoulou convenience sampling technique was adopted for selecting sampling size of 200 persons. Also, 31 key informants were interviewed across the study area. The responses from the entire sampled questionnaire and interview were analyzed using Microsoft excel and statistical package for social sciences. The study revealed that a good number of the forest resources such as Elaeis guineensis, Garcinia kola, Bambusa vulgaris, Azadirachta indica and Brophyllum pinnatum have multiple uses. The result also revealed that the nature of forest determines the quantity of ecosystem service benefits supplied. Hence, those community forests with weak policies supply less than 40% of resources because their traditional laws of entering and harvesting forest resources are no longer effective, while those with strong policies like restriction into their sacred groves, forest reserves and swampy forests supply above 40%. The chi-square value of 352.873 with 28 degrees of freedom (DF) proved that there is strong relationship between the nature of forest and the quantity of ecosystem services provided. This research concludes that forest ecosystem in Ihiala L.G.A, supplies a wide variety of plant and animal species to the populace, which they basically use for timber, firewood, food and medicine. Nonetheless, without alternative and diversified livelihood, the supply is becoming unsustainable. It recommends that since palm tree and its resources are averagely abundant in the study area, there is need to support the establishment of basket making training centre in various communities and as such, make it an attractive skill acquisition programme.

Geospatial analysis of elephant habitat suitability and movement for mapping the elephant corridor in Dalma Wildlife Sanctuary (India).

Wildlife and natural resources constitute an integral part of the ecosystem, whereas human interventions dismantled the living conditions of the wildlife. This is testified in the Dalma Wildlife Sanctuary (DWS) where the habitats of Asian elephants have changed due to human intervention and deforestation over the decades. The present study aimed to assess the elephant habitat suitability in the DWS of Jharkhand state (India) using the geospatial parameters such as forest density, degree of slope, proximity to water bodies, land use land cover, proximity to agricultural land, built-up density, and road density. The analytical hierarchical process technique was utilized to determine habitat preference and selection of relevant factors to categorize criteria. The study revealed that about 6.7% (26.74 km2) of the area is very highly suitable for elephant habitat, while 52.26% (208.49 km2) of the forest area was found highly suitable. The most suitable habitat was identified in the core parts of the forest, while the least suitable areas were found in the southern part, where the presence of roads, built-up, and agricultural land was prominent. It was also observed that most human-elephant conflicts were exhibited in the low and very low suitable areas, while 90% of the elephant movement was witnessed in the high and very high suitable areas. Among the four identified corridors, three are inactive, and their location corresponds with low to very low suitable habitats. The study identified the migratory corridor routes inside the sanctuary where effective management is required for the conservation of elephant habitats and minimizing conflicts.

Domestic dogs and vultures feed on the same carcasses in Wayanad Wildlife Sanctuary, Kerala, India

Domestic dogs and vultures feed on the same carcasses in Wayanad Wildlife Sanctuary, Kerala, India

The importance of different forest management systems for people’s dietary quality in Tanzania

ContextA large body of literature has shown that forests provide nutritious foods in many low- and middle-income countries. Yet, there is limited evidence on the contributions from different types of forest and tree systems.ObjectivesHere, we focus on individual trees and smaller forest patches outside established forest reserves as well as different forest management systems.MethodsWe do so by combining novel high-resolution data on tree cover with 24-h dietary recall surveys from 465 women in Tanzania.ResultsWe show that people with more unclassified tree cover (i.e., individual trees and small forest patches) in their nearby surroundings have more adequate protein, iron, zinc, and vitamin A intakes. We also find that having a nearby forest under Participatory Forest Management (PFM) system is associated with higher adequacy levels of energy, iron, zinc and vitamin A. By contrast, tree cover within other types of forest (e.g., Government Forest Reserves and Government Forest Plantations) is not positively associated with people’s dietary quality.ConclusionsOur key finding is that having individual trees, smaller forest patches and/or forest under PFM in close proximity is more beneficial for people’s diets than other types of established forests. Our results highlight the nutritional importance of trees outside established forests and question the often-assumed benefits of forests if these are made inaccessible by social barriers (e.g., legislation). Finally, our results emphasize the need to distinguish between different forest management systems when studying forest-diet linkages.

Modelling and Mapping of Aboveground Carbon of Oluwa Forest Reserve Using LandSat 8 TM and Forest Inventory Data

Modelling and Mapping of Aboveground Carbon of Oluwa Forest Reserve Using LandSat 8 TM and Forest Inventory Data

Conservation and Avoided Deforestation: Evidence from Protected Areas of Tanzania

Tanzania dedicates a substantial proportion (38%) of its territory to conservation, with a large number of Protected Areas (PAs) managed under various regimes. Nevertheless, the country still experiences high rates of deforestation, which threaten the ecological integrity and socio-economic benefits of its forests. We utilized the Global Forest Change Dataset (2012–2022) and implemented a Propensity Score Matching (PSM) approach followed by a series of binomial logit regression modeling. Our objectives were to evaluate (1) the likelihood of PAs in avoiding deforestation compared with unprotected forest landscapes, (2) the variability in effectiveness among the different PA management regimes in avoiding deforestation, (3) evidence of leakage, defined here as the displacement of deforestation beyond PA boundaries as a result of protection inside PAs. Our findings reveal that, despite ongoing deforestation within and outside of PAs, conservation efforts are, on average, three times more likely to avoid deforestation compared with unprotected landscapes. However, the effectiveness of avoiding deforestation significantly varies among the different management regimes. National Parks and Game Reserves are nearly ten times more successful in avoiding deforestation, likely because of the stringent set of regulations and availability of resources for implementation. Conversely, Nature Forest Reserves, Game Controlled Areas, and Forest Reserves are, on average, only twice as likely to avoid deforestation, indicating substantial room for improvement. We found little evidence of the overall leakage as a consequence of protection. These results highlight the mixed success of Tanzania’s conservation efforts, suggesting opportunities to enhance the effectiveness of many less protected PAs. We conclude by proposing potential strategic pathways to enhance further the climate and ecosystem benefits of conservation in Tanzania.

Restoration of stand on the site of burnt spruce forest in the Central Forest reserve

With the warming of the climate, the intensification of droughts and the drying up of coniferous forests, the number of forest fires is also increasing. Therefore, the study of the post-fire dynamics of stands and prospects for reforestation on burnt areas is especially relevant. The research was carried out in the Central Forest State Natural Biosphere Reserve (southern taiga) on the burnt area formed in 1999 as a result of a thunderstorm. The purpose of the work was: to describe the state of vegetation 22 years after burnout; to find out the characteristics of the stand formed on the burnt area and the possibility of their use for reconstructing the history of disturbancies in old spruce forests. The objectives of the study included: monitoring vegetation changes in the 1999 burnt area; studying the growth of spruce undergrowth in the burnt area; finding out the number and ratio of preliminary and subsequent renewal of tree species; analyzing the distribution and amount of coals in the sample plots (depending on the intensity of burnout and the state of the pre-fire stand). To study the state of vegetation after the burnout of the blueberry-wood sorrel and wood sorrel – nemoral-herb spruce (Picea abies (L.) H. Karst.) forests, 14 sample plots (100 m2 each) were laid in the northwestern part of the burnt area. The sample plots covered 1.5 hectares. 22 years after the fire, a mixed small-leaved forest with a predominance of birch and a significant participation of spruce has been forming on the site of burnt spruce forests. Spruce is represented mainly by post-fire renewal. In the undergrowth, the ratio of pre- and post-renewal spruce is about 1 : 3. In the ground cover, a small number of nemoral herb species is recorded, and in the stand and undergrowth – almost complete absence of broad-leaved species. A lot of coals were found in soil digs in 4 sample plots (30%); there were no coals in 3 (20%) sample plots, and small coals in small amount were found in 7 (50%) sample plots. Assessing the possibilities of identifying the first post-fire generation of spruce in old stands, it must be said that none of the characteristics of a post-fire spruce stand is universal for its recognition. Only a set of features allows to identify the history of the stand. Distinctive features of the first post-old generation: the presence of coals in 30% of samples or more; a large admixture of birch and aspen; a large diversity of the aspen part of the stand; if there are broad-leaved species, they will be much younger than the spruce; the presence of a sharp decline, and then a rise in growths in a significant part of the oldest spruce trees; the main generation of spruce has initial radial growths on an average of 2.1 mm/year, and the absence of synchronous sharp rises of the growths at the beginning of life. The age of aspen most accurately corresponds to the year of the fire.

Reshaping conservation incorporating Indigenous perspectives

Typically, conservation is achieved by excluding, evacuating, or legally dismissing the rights of local/native people from using protected areas, resulting in evictions, ongoing distress, and dejection among many Indigenous Peoples and Local Communities (IPLCs) worldwide. However, the Biligiri Rangaswamy Temple Wildlife Sanctuary (BRTWS) in the Western Ghats offers a unique example of conservation where local tribal people, Soligas, have persisted and been living with tigers, elephants, bears, leopards, and other wild animals for millennia. In the past, they managed the forest which, under the colonial and later modern conservation policies, has been restricted and penalised. However, Soligas’ continuous existence in the Sanctuary suggests that people’s knowledge and skills must be contributing to enable them to co-exist with wild animals. Our integrated analysis of ecological, socio-cultural, and policy aspects and experience of working with Soligas in the BRT landscape typifies the importance of locals’ knowledge in managing the forest — urging the need to recognise and support IPLCs’ work for achieving conservation as well as socio-economic outcomes. This Note highlights the necessity to understand, recognise, and embrace IPLCs’ knowledge systems from a conservation context. Emerging future economic opportunities through Nature-based Solutions, if developed equitably, sustainably, and in culturally appropriate ways in line with IPLCs' aspirations and responsibilities, can benefit both wildlife and people, while reducing wildlife conflicts and delivering multiple-faceted conservation outcomes globally.

Pathogens detected in ticks (Ixodes ricinus) feeding on red squirrels (Sciurus vulgaris) from city parks in Warsaw

The European red squirrel (Sciurus vulgaris) is a common host for Ixodes ricinus ticks in urban and rural habitats, however, studies on ticks and tick-borne pathogens (TBPs) of squirrels have not been conducted in Poland yet. Thus, the aims of the current study were to assess and compare the prevalence and abundance of ticks on red squirrels trapped at two sites in the Warsaw area (in an urban forest reserve and an urban park) and using molecular tools, to assess the genetic diversity of three pathogens (Borrelia burgdorferi sensu lato, Rickettsia and Babesia spp.) in I. ricinus ticks collected from squirrels. For the detection of Rickettsia spp. a 750 bp long fragment of the citrate synthase gltA gene was amplified; for B. burgdorferi s.l. 132f/905r and 220f/824r primers were used to amplify the bacterial flaB gene fragments (774 and 605 bp, respectively) and for Babesia spp., a 550 bpfragment of 18S rRNA gene was amplified. In total, 91 red squirrels were examined for ticks. There were differences in tick prevalence and mean abundance of infestation in squirrels from the urban forest reserve and urban park. Three species of B. burgdorferi s.l., Rickettsia spp., and Babesia microti were detected in ticks removed from the squirrels. Our results broaden knowledge of S. vulgaris as an important host for immature I. ricinus stages and support the hypothesis that red squirrels act as a reservoir of B. burgdorferi. Moreover, we conclude that red squirrels may also play a role in facilitating the circulation of other pathogens causing serious risk of tick-borne diseases in natural and urban areas.

Assessment of potential contributions of biomass load to fire hazards in Arakanga Forest Reserve, Ogun State, Nigeria

Assessment of potential contributions of biomass load to fire hazards in Arakanga Forest Reserve, Ogun State, Nigeria

Species Diversity And Pollination Ecology Of Bagale Hills Forest Reserve, Girei Local Government Area, Adamawa State - Nigeria

Background: This study assessed the pollination ecology and diversity of the Bagale Hills Forest Reserve (BHFR) in Adamawa State. The aim of the study was to understand if biodiversity conservation of the reserve, as planned by the government, is achieved. The objectives were to: assess angiosperm diversity; determine pollinator diversity; evaluate the interaction between angiosperms-pollinators and assess the period of flowering of angiosperms in the transects of the study area. Materials and Methods: The study adopted the systematic line transect procedure in laying out transects. Four transects of 1 km were laid and four sampled plots of 50 m x 50 m size was alternately laid along each of the transect. Three angiosperms were selected at random for data collection on phenology and the diversity of both plants and its associated pollinators. The studied reserve was traversed on foot for three months and the appearance of flower buds and the presence of pollinators on targeted tree species was observed. Data were analyzed and presented using the Descriptive statistics and the Shannon-Wiener diversity index was used for the determination of biodiversity. Results: The result of the Shannon-Wiener Diversity Index indicated pollinator species diversity of 2.686 and angiosperms diversity index of 2.761591 that indicated a very high biodiversity for both the pollinators and its associated plant species in the study area. The phenology result indicated that the pollinators observed were invertebrates that were not evenly distributed and that only about 3.25 % of the tree species were flowering during the wet season. It was also observed that all sampled tree species were generalist in nature. Conclusion: It was concluded that conservation education must be prioritized for the communities surrounding the study area.

Community structure, species diversity and biomass of trees in Tranum Forest Reserve, Raub, Pahang

This study was conducted at the Tranum Forest Reserve, Raub, Pahang to determine the community structure, species diversity and biomass of trees in the area. Four study plots, each measuring 25 m × 20 m, were established at the study site, which covered a total area of 0.2 ha. All trees with diameter at breast height (DBH) of 5 cm and above were measured and recorded. A total of 175 trees was enumerated in the study plots, comprising 106 species and 79 genera from 40 families. The largest family was Lauraceae, represented by 11 species from six genera, followed by Myrtaceae with eight species from one genus. Tree species diversity of the study area was high, as reflected by a Shannon Diversity Index (H’) value of 4.49 (Hmax = 4.66). Margalef Richness Index (R’) and Shannon Evenness Index (E) showed values of 20.33 and 0.84, respectively. The most important family, based on the highest Family Important Value Index (FIVi), was Dipterocarpaceae, with a value 17.31%. Shorea platyclados was the most important species with Important Value Index (IVi) of 17.04%. The tree density of the study area was 875 indidivuals per hectare (ind/ha), with Lauraceae being the densest family at 85 ind/ha. Vitex gamosepala was the densest species at 40 ind/ha. The total basal area of trees was 66.23 m2/ha, with Dipterocarpaceae showed the highest basal area of 31.69 m2/ha and Shorea platyclados had the highest basal area of 31.69 m2/ha at species level. The total biomass of trees was estimated at 1,307.56 t/ha, of which the above ground biomass and the below ground biomass were 1,091.33 t/ha and 216.23 t/ha, respectively. Dipterocarpaceae contributed the highest biomass with an estimate of 743.83 t/ha and Shorea platyclados showed the highest biomass at species level with 743.83 t/ha.

Notes of endemic species, Archidendron pahangense (Kosterm.) I.C. Nielsen (Fabaceae) in Peninsular Malaysia

The species of Archidendron pahangense (Kosterm.) I.C. Nielsen (Fabaceae) is an endemic species in Peninsular Malaysia known only from Pahang and Selangor state. This species was also recorded in Gunung Rabong, Kelantan. This species was reported in Fraser Hill, Pahang, whereby common in the Pine Tree Hill. This species was also observed in Semangko Tambahan Forest Reserve, Selangor. Fertile specimens were collected in 1923, 1938, 1954, 1966 and 1967.

Nepenthes × sultan-ibrahimii (Nepenthaceae), a new nothospecies of pitcher plant from Ayer Hitam Utara Forest Reserve, Johor, Malaysia

A new natural hybrid of Nepenthes (Nepenthaceae) Nepenthes × sultan-ibrahimii from Ayer Hitam Utara Forest Reserve, Johor, Malaysia is described and illustrated. Comprehensive morphological description, illustrations and geographical distribution are given. The hybrid and its putative parents, namely Nepenthes rafflesiana and Nepenthes mirabilis are compared.

Species Evenness and Diversity of Soil Invertebrates at Different Agricultural Lands and a Forest Reserve at Kota Belud, Sabah

Increasing agricultural activities can lead to changes in soil ecosystems, potentially impacting soil invertebrate communities as they are highly responsive to soil disturbances. The composition of soil invertebrates within each agricultural habitat provides insights into how these communities respond to their environmental conditions. This study aimed to investigate the evenness and diversity of soil invertebrates in agricultural areas of Kota Belud, Sabah. Soil samples were collected from three different agricultural sites, a rubber plantation, an oil palm plantation, and a paddy field, as well as a forest reserve as a control site. Pitfall traps and Berlese-Tullgren funnels were used to collect soil invertebrates. A total of 180 soil samples and 474 individuals of soil invertebrates were collected and analyzed. Physicochemical analyses, including moisture content, soil texture, pH, soil nutrient content, and organic matter, were conducted on all soil samples to assess their influence on the composition of soil invertebrates. Results indicated that Julida, Coleoptera, Gastropoda and Araneae were frequently associated with high organic matter, pH, moisture content and phosphorus. On the other hand, Haplotaxida appeared to be more sensitive to potassium levels. Notably, the Blattodea, Orthoptera, Hymenoptera, Isopoda, Polydesmida and Diptera, were found to be abundant in areas with lower organic matter and pH in the control site, i.e., forest reserve area. These findings underscore the significance of soil layer activities in influencing the presence and survival of soil invertebrates. Given their vital role in sustaining life, prioritizing the enhancement of soil invertebrate populations is crucial, particularly in Sabah, a prominent food crop-producing state in Malaysia.

Leveraging Local Ecological Knowledge for Bat Conservation: Insights from a Community-based Study in the Ebo Forest Reserve, Littoral Region of Cameroon

Leveraging Local Ecological Knowledge for Bat Conservation: Insights from a Community-based Study in the Ebo Forest Reserve, Littoral Region of Cameroon

Taxonomy and bioacoustics of some crickets (Orthoptera: Grylloidea) from Panti Forest Reserve (Peninsular Malaysia: Johor)

Taxonomy and bioacoustics of some crickets (Orthoptera: Grylloidea) from Panti Forest Reserve (Peninsular Malaysia: Johor)

Habitat Loss in the IUCN Extent: Climate Change-Induced Threat on the Red Goral (Naemorhedus baileyi) in the Temperate Mountains of South Asia.

Climate change has severely impacted many species, causing rapid declines or extinctions within their essential ecological niches. This deterioration is expected to worsen, particularly in remote high-altitude regions like the Himalayas, which are home to diverse flora and fauna, including many mountainous ungulates. Unfortunately, many of these species lack adaptive strategies to cope with novel climatic conditions. The Red Goral (Naemorhedus baileyi) is a cliff-dwelling species classified as "Vulnerable" by the IUCN due to its small population and restricted range extent. This species has the most restricted range of all goral species, residing in the temperate mountains of northeastern India, northern Myanmar, and China. Given its restricted range and small population, this species is highly threatened by climate change and habitat disruptions, making habitat mapping and modeling crucial for effective conservation. This study employs an ensemble approach (BRT, GLM, MARS, and MaxEnt) in species distribution modeling to assess the distribution, habitat suitability, and connectivity of this species, addressing critical gaps in its understanding. The findings reveal deeply concerning trends, as the model identified only 21,363 km2 (13.01%) of the total IUCN extent as suitable habitat under current conditions. This limited extent is alarming, as it leaves the species with very little refuge to thrive. Furthermore, this situation is compounded by the fact that only around 22.29% of this identified suitable habitat falls within protected areas (PAs), further constraining the species' ability to survive in a protected landscape. The future projections paint even degraded scenarios, with a predicted decline of over 34% and excessive fragmentation in suitable habitat extent. In addition, the present study identifies precipitation seasonality and elevation as the primary contributing predictors to the distribution of this species. Furthermore, the study identifies nine designated transboundary PAs within the IUCN extent of the Red Goral and the connectivity among them to highlight the crucial role in supporting the species' survival over time. Moreover, the Dibang Wildlife Sanctuary (DWLS) and Hkakaborazi National Park are revealed as the PAs with the largest extent of suitable habitat in the present scenario. Furthermore, the highest mean connectivity was found between DWLS and Mehao Wildlife Sanctuary (0.0583), while the lowest connectivity was observed between Kamlang Wildlife Sanctuary and Namdapha National Park (0.0172). The study also suggests strategic management planning that is a vital foundation for future research and conservation initiatives, aiming to ensure the long-term survival of the species in its natural habitat.