Conservation, Volume 3, Issue 3 (September 2023) – 8 articles

The NH 58 area in India has been experiencing an increase in landslide occurrences, posing significant threats to local communities, infrastructure, and the environment. The growing need to identify areas prone to landslides for effective disaster risk management, land use planning, and infrastructure development has led to the increased adoption of advanced geospatial technologies and statistical methods. In this context, this research article presents an in-depth analysis aimed at developing a landslide susceptibility zonation (LSZ) map for the NH 58 area using remote sensing, GIS, and logistic regression analysis. The study incorporates multiple geo-environmental factors for analysis, such as slope aspect, curvature, drainage density, elevation, fault distance, flow accumulation, geology, geomorphology, land use land cover (LULC), road distance, and slope angle. Utilizing 50% of the landslide inventory data, the logistic regression model was trained to determine correlations between causal factors and landslide occurrences. The logistic regression model was then employed to calculate landslide probabilities for each mapping unit within the NH 58 area, which were subsequently classified into relative susceptibility zones using a statistical class break technique. The model’s accuracy was verified through ROC curve analysis, resulting in a 92% accuracy rate. The LSZ map highlights areas near road cut slopes as highly susceptible to landslides, providing crucial information for land use planning and management to reduce landslide risk in the NH 58 area. The study’s findings are beneficial for policymakers, planners, and other stakeholders involved in regional disaster risk management. This research offers a comprehensive analysis of landslide-influencing factors in the NH 58 area and introduces an LSZ map as a valuable tool for managing and mitigating landslide risks. The map also serves as a critical reference for future research and contributes to the broader understanding of landslide susceptibility in the region. Full article

The shade-grown coffee agroecosystem is rich in ecosystem services (ES). In recent years, pests and the decrease in coffee prices have caused producers to change their agricultural activities. These changes in land use have resulted in alterations in the vegetation cover that lead to the loss of ES. The objective of this research was to analyze the effects of land cover and land use changes on the ES associated with coffee production in Cumbres de Huicicila, a coffee-growing region in western Mexico. For this purpose, we analyzed land cover and land use maps for the period 2007–2019, calculated the annual rate of change and estimated the future rate of change to 2030. We used a literature review through the SALSA method to identify and estimate the impact of the ES of coffee plantations under the approach of nature’s contributions to people. As a result, we found alterations with a decreasing trend in agroecosystem cover and loss of ES related to biodiversity. We hope that this research will serve to consolidate efforts for the conservation and sustainable use of the ES of the shade-grown coffee plantations. Full article

Securidaca longepedunculata Fresen. is an overexploited forest species in the Lubumbashi region (south-eastern DR Congo), as its roots are highly valued in traditional medicine. Conventional propagation of this species is affected by seed dormancy and a high mortality rate during early seedling development. To improve on existing methods, we developed an in vitro seed germination protocol. After observing the germination rates, the effects of different doses (0.5, 1, 1.5, and 2 mg/L) of cytokinins (6-benzylaminopurine, kinetin, and meta-topolin) on S. longepedunculata seedling development were compared. Our results showed that soaking for 10 min in NaOCl (10%) followed by 5 min in ethanol (70%) effectively reduced the death rate of seeds while increasing the germination rate to almost 77%. The addition of cytokinins improved plantlet growth: a 12.2× increase in the number of plantlets was obtained with 1.5 mg/L meta-topolin, while only a single stem was obtained from the control. The effects of different auxin types on rhizogenesis did not differ significantly. The best recovery and rooting were noted with microcuttings from the basal parts of S. longepedunculata plantlets. Finally, the seedlings produced survived during the acclimatisation phase regardless of the type of substrate used. The established protocol provides a means for large-scale production of S. longepedunculata plantlets for the restoration of degraded landscapes and agroforestry. Full article

Despite the socioeconomic importance of erva-mate (Ilex paraguariensis) traditional agroforestry production for family agriculture in Southern Brazil, there has been no systematization of forest management best practices aiming at long-term sustainability. Here, I present an analysis of relevant forest characteristics that are combined with restoration and management best practices to maintain not only sustainable traditional erva-mate production but also a healthy forest environment. Additionally, I developed a framework that offers an easy tool to apply a focused analysis of general forest attributes to help determine best practices for forest restoration, species diversification, and overall sustainability and health of agroforestry systems. This study also demonstrates that the integration of knowledge and practices that small-scale farmers and traditional communities have been developing for generations should be leveraged for more inclusive research and extension, especially considering the threats family farming is facing due to the dominant paradigm of conventional, one-size-fits-all agriculture. Full article

Natural habitats in South America have been intensively used and modified, including their conversion to exotic tree plantations, impacting the terrestrial fauna communities. Carnivores play an important role in the functioning of ecosystems as apex predators. Landscape characteristics and resource availability determine the composition and abundance of co-occurring carnivores. We hypothesized that the diversity and relative abundance of native carnivores varied in relation to the different vegetation macrohabitats. We predicted that native forests support a higher diversity and abundance of native carnivores compared to exotic plantations. Between 1 March 2021 and 31 March 2022, we estimated the species’ richness, composition, and relative abundance of terrestrial native carnivores in three different landscapes of the Coast Range in central Chile: (a) monoculture plantation of the exotic Pinus radiata (MP); (b) Mediterranean coastal thorn forest (TF); and (c) Mediterranean coastal sclerophyllous forest (SF). We monitored an area of 1000 ha in each landscape, installing 10 camera traps (total of 30 camera traps). We used a monitoring transect with unbaited camera traps separated by 1 km, with a total photo-trapping effort of 10,046 camera days. The classification, organization, and analysis of camera trap data were conducted using CameraSweet software. The total number of independent native carnivore species events (photos separated > 60 min) recorded in each landscape were 1564 in SF, 1412 in TF, and 775 in MP. Carnivore richness and composition were not significantly different in all three landscapes. We detected five native carnivore species. Relative abundance by species was significantly higher in SF compared to MP for Leopardus guigna, Conepatus chinga, and Galictis cuja and also significantly higher in TF compared to MP for L. guigna. Our results suggest that the native vegetation cover must be preserved to maintain viable and abundant native carnivore populations, crucially relevant in the highly impacted and human-dominated global biodiversity hotspot of Central Chile. This study contributes to informing evidence-based decision-making and conservation strategies at the landscape level to mitigate biodiversity loss. Full article

Research efforts to protect Philippine biodiversity have increased significantly. However, there is an imbalance in the distribution of published studies, with specific territories receiving more attention than others. Mindanao, a southern Philippine group of islands, is known for its high levels of endemism for amphibians and reptiles. Despite this, research on these groups remains scattered. To address this gap, we conducted a literature review focusing on amphibians and reptiles in the Mindanao faunal region. We found an increasing effort towards herpetofauna over the two decades, yet there is a clear bias in the effort towards amphibians compared to reptiles. Furthermore, we found that amphibians have a significantly higher species threat index than reptiles and all other vertebrate groups, regardless of species endemism and conservation status. Yet, threatened herpetofauna species and those facing greater threats are poorly studied in general. Understanding the factors driving research biases in Mindanao and the Philippines is essential to allow us to redirect research efforts to the most needed areas, particularly understudied and neglected taxa in Mindanao. This is especially urgent in the face of a changing climate, where diverse herpetofauna communities are at an increased risk of extinction. Consequently, by bridging these gaps in biodiversity information, we can effectively contribute to the conservation and understanding of biodiversity in the region. Full article

Affem Boussou community forest (AFC) abounds in important biological resources. This study, which contributes to its better management, examines the spatiotemporal dynamics of the vegetation and its ecological and structural characteristics to propose a zoning plan for said forest. The analysis of the spatiotemporal dynamics of land use in the AFC from Google Earth images of 2015, 2018, and 2021 revealed a regressive trend of formations: crops and fallows (−33.98%), dense dry forests (−7.92%), gallery forests (−3.46%), plantations (−100%), grassy savannahs, and meadows (−18.84%), except for tree/shrub savannahs (484.23%). The floristic inventory identified 163 species divided into 129 genera and 55 families. Fabaceae (14.02%), and Combretaceae (10.55%) are the most represented families. Anogeissus leiocarpa (5.19%) and Vitellaria paradoxa (4.72%) are the most frequent species. We note the dominance of individuals of small diameters. The regeneration potential of the AFC is 64 feet/ha due to 21 feet/ha of suckers, 29 feet/ha of seedlings, and 14 feet/ha of shoots. As a zoning plan, the AFC was subdivided into four zones: the agroforestry zone (18.80%), the sustainable production forest zone (42.22%), the buffer zone (11%), and the biological conservation zone (28%). These results constitute a scientific basis for testing ecological indicators of the sustainable management of community forests in Togo. Full article

Soil compaction is one of the main causes of soil degradation, and some parameters have been used to characterize it, like those related to compressibility and the degree of compactness. To evaluate the rotational grazing time during winter and the presence and absence of grazing, on the compressibility and degree of compactness of a Cambisol, an experiment was installed and consisted of corn planting for silage, a fallow and pasture planting period, with two treatments evaluating the amount of rotational grazing (two and three times in a period of, respectively, 2 and 3 months), subdivided into the presence and absence of dairy cattle grazing. The mean bulk density value of 1.47 Mg/m³ separates the occurrence (plastic deformation) or not (elastic deformation) of additional soil compaction, while the traffic of machinery and animal trampling should occur with soil moisture lower than 0.23 kg/kg, when the soil has a larger load-bearing capacity. For the conservation of soil structure, our study recommends the permanence of cattle in the plots for 30 to 40 min/day and an exit when the pasture height is 0.07 to 0.10 m, with two or three grazing in a period of, respectively, 2 and 3 months. Full article