Robust cepstral feature for bird sound classification

Birds are excellent environmental indicators and may indicate sustainability of the ecosystem; birds may be used to provide provisioning, regulating, and supporting services. Therefore, birdlife conservation-related researches always receive centre stage. Due to the airborne nature of birds and the dense nature of the tropical forest, bird identifications through audio may be a better solution than visual identification. The goal of this study is to find the most appropriate cepstral features that can be used to classify bird sounds more accurately. Fifteen (15) endemic Bornean bird sounds have been selected and segmented using an automated energy-based algorithm. Three (3) types of cepstral features are extracted; linear prediction cepstrum coefficients (LPCC), mel frequency cepstral coefficients (MFCC), gammatone frequency cepstral coefficients (GTCC), and used separately for classification purposes using support vector machine (SVM). Through comparison between their prediction results, it has been demonstrated that model utilising GTCC features, with 93.3% accuracy, outperforms models utilising MFCC and LPCC features. This demonstrates the robustness of GTCC for bird sounds classification. The result is significant for the advancement of bird sound classification research, which has been shown to have many applications such as in eco-tourism and wildlife management.

The Covid-19 Pandemic: Limited Water Access and the Precarity of Women Fishers at Lake Kariba, Zimbabwe

Man-made reservoirs are constructed to meet certain purposes and Lake Kariba, Zimbabwe, was designed for hydroelectric power generation. However, it has developed other multiple uses, and the growth of fisheries on the lake has had a significant impact on the livelihoods of local communities. The declaration of Covid-19 as a pandemic in Zimbabwe in March 2020 was quickly followed by the imposition of national lockdowns with varying levels of severity up to the present day. This was done to curtail the spread of the disease, meanwhile enhancing the nation’s capacity in terms of acquiring testing kits, constructing more admission and quarantine centres as well as educating the people about ways to keep safe. In response to the calls by the government to monitor the movement of people and compliance of the lockdown rules, the Zimbabwe National Parks and Wildlife Management Authority (ZNPWMA), the governing body of the Lake Kariba fisheries, imposed rules that have significantly impacted the fishing communities at Lake Kariba. Both gillnet fishers and rod and line fishers have been impacted, but our focus here is on women rod and line fishers. Using the precarious livelihoods conceptual frameworks, we show how the changes in water management during the Covid-19 pandemic lockdowns has generated high levels of precariousness on the livelihoods of women at Kariba. We define precariousness as the condition of uncertainties brought to the women fishers by changes in water restrictions. The precarity of women was induced by several factors. For instance, the women fishers reported that restrictions to accessing fish in areas with high catches impacted them. They are also now obliged to pay exorbitant fishing fees in a way to discourage them to fish; they were frequently chased away from the Lake by ZNPWMA officers; they had limited amount of time to fish due to curfews; and failure to comply results in heavy fines imposed on them among other challenges. We show how these challenges interact with the current Zimbabwe socio-economic crisis to worsen the precariousness and vulnerability of women fishers at Lake Kariba. Data presented in this manuscript are based on participant observation and interviews with women fishers at Lake Kariba.

INFORMATION NEEDS OF WILDLIFE HUNTERS IN KWARA STATE: IMPLICATION FOR EXTENSION SERVICE DELIVERY IN NIGERIA

Access to accurate, timely and reliable information has crucial roles in production efficiency of wildlife hunters. An understanding of information needs could propel actors in the agricultural information business to provide information that will meet the needs. To this end, the present study investigated the information needs of wildlife hunters in Kwara State, Nigeria. A three-stage sampling technique was used to select 120 respondents for the study. Primary data collected with the use of interview schedule were analysed using descriptive and inferential statistical tools. The result revealed that hunters’ group (M = 2.48) and consultation with older/experienced hunters (M = 2.02) were the prominent channels of information accessible to the hunters. Information on market situation (M = 2.16), games search techniques and ethics (M = 2.07) and hunting locations (M = 1.98) were the major areas of information needs of the hunters. Also, lack of awareness of extension information source (M = 1.96), inaccessibility of extension workers (M = 1.86) and trust of the information source (M = 1.79) were the major identified obstacles to accessing information from extension channels. The study further showed that age of the hunters, level of education and years of experience have a significant relationship with their information needs at p < 0.05. The study concluded that the hunters have ample information needs and recommends that an arm of extension service operation should be devoted to wildlife with the mandate of hunters’ education on vital areas of wildlife management for improved livelihood.

Vertebrate diversity at Margalla Hills National Park, Pakistan

The Margalla Hills National Park (MHNP) in Islamabad, Pakistan, is an important site for the conservation of many plants and animals. The present study aimed to determine the status of fauna diversity and richness, and environmental threats to the animals. A field study was conducted and the point count method was used to determine vertebrate diversity. The survey showed that the MHNP is home to 117 species of birds, 27 reptiles (including species such as the saw–scaled viper, Russell’s viper and the Indian cobra) and 30 mammalian species, such as barking deer, wild boar, golden jackal, red fox, Asiatic leopards, monkeys, fruit bats, and pangolins. The results showed a maximum count of 9,076 birds of 117 species belonging to 48 families. According to the Islamabad wildlife management board, one of the unique species, the grey goral (Nemorhaedus goral), has become extinct at the MHNP as no single specimen has been recorded since 2018. It was also been observed, however, that the numbers of the endangered species of common leopard (Panthera pardus) and pangolin (Manis crassicaudata) have increased, possibly due to the wildlife management board’s strategy for conservation. Nevertheless, greater conservation and protection of wild fauna at the MHNP is still needed. During the visits, threats such as habitat degradation, climate change, and over hunting were recorded. Dataset published through GBIF (Doi: 10.15470/hf1s9i)

Variation in age of primiparity in mountain goats estimated from horn growth increments

Variation in age of primiparity is important for population dynamics and wildlife management because it can affect population growth. Using a novel technique based on the trade-off between annual horn growth and reproduction, we estimated the age of primiparity for 2274 female mountain goats (Oreamnos americanus, de Blainville 1816) harvested across British Columbia, Canada, from 1976 to 2019. We then investigated spatio-temporal variation in the probability that harvested females were primiparous when aged three, four or five years and older using Bayesian ordinal regressions. We found that the probability of primiparity at three years decreased over time in nearly all mountain ranges. In the Coastal Mountain range, however, the probability of primiparity at age three significantly increased. These results suggest that the large coastal populations of mountain goats could be more resilient to harvest than other populations in British Columbia, which may be experiencing environmental effects promoting later primiparity. Models predicting age of primiparity from annual growth measures are a valuable tool for wildlife management and could help conservation of many species.

Tourism Status and Sources of Income to Local Communities Amidst COVID-19 Pandemic and Its Implications in Biodiversity Conservation in Burunge Wildlife Management Area in Tanzania

BACKGROUNDThe COVID-19 pandemic has resulted in various negative repercussions worldwide in terms of biological conservation, the tourism sector and socioeconomic welfare. The purpose of this study was to assess and understand the impact of the COVID-19 outbreak on socio-economic activities, income from the tourism sector, alternative sources of income adapted by the local communities adjacent to the Burunge Wildlife Management Area (WMA) as a means of survival, and its implications for biodiversity conservation. To assess tourism status, socio-economic activities and alternative livelihoods, interviews, semi-structured questionnaires, focus group discussions (FGDs), and key informants’ consultations were conducted on 264 respondents, of whom 53% (n = 140) were men and 47% (n = 124) were women. Secondary data were synthesized from soft and hard copy reports through an extensive literature search in order to comprehend the implications of COVID-19 and alternative livelihoods in biodiversity conservation. RESULTSThe results showed that 90.5% (239) of respondents reported being seriously affected by the emergence of COVID-19, while 9.5% (n = 25) were not affected by it. Some of the impacts of the COVID-19 as pointed out by the respondents included deflation 91.7% (n = 242), a decline in the number of customers 91.7% (n = 242), whereas others lost jobs 5.7% (n = 15). In the case of the Burunge WMA authority, revenue collection (mainly from the tourism sector) declined by 32.5% and 76.4% for the years 2019/20 and 2020/21, respectively, as compared to the revenue obtained in the year 2018/19 before COVID-19. During the pandemic, local communities adapted to several alternative sources of income, including fishing 9.5% (n = 25), Boda-Boda (motorcycle taxis) 3.4% (n = 9), agriculture 22.3% (n = 59), and livestock keeping 27.3% (n = 72).CONCLUSIONBased on the findings of this study, it is important for local communities, especially those adjacent to protected areas, to have diversified means of income that are environmentally and socially sustainable, such as fish farming and beekeeping, to reduce the impacts of unanticipated crises such as COVID-19.