scholarly journals Trends in extinction and persistence of diurnal primates in the fragmented lowland rainforests of the Upper Brahmaputra Valley, north-eastern India

Oryx ◽  
2012 ◽  
Vol 46 (2) ◽  
pp. 308-311 ◽  
Author(s):  
Narayan Sharma ◽  
M. D. Madhusudan ◽  
Prabal Sarkar ◽  
Mayur Bawri ◽  
Anindya Sinha
Keyword(s):  
Census Data ◽  
Habitat Degradation ◽  
Current Status ◽  
Human Populations ◽  
Forest Fragments ◽  
Brahmaputra Valley ◽  
North Eastern ◽  
Key Informant ◽  
Indian State

AbstractThe historical deforestation of the Upper Brahmaputra Valley in the Indian state of Assam has resulted in the transformation of its once-contiguous lowland rainforests into many isolated forest fragments that are still rich in species, including primates. We report the recent history and current status of six diurnal primates in one large (2,098 ha) and three small (<500 ha) fragments of the Upper Brahmaputra Valley. We censused primates in the small fragments during 2002, 2005, 2009, in the large fragment in 2008, and used other published census data to derive population trends. We also used key informant surveys to obtain historical occurrence data for these populations. Our analyses reveal the recent extinction of some populations and the simultaneous long-term persistence of others in these fragments over 16 years. Most populations appeared to have declined in the small fragments but primate abundance has increased significantly in the largest fragment over the last decade. Addressing the biomass needs of the local human populations, which appears to drive habitat degradation, and better protection of these forests, will be crucial in ensuring the future survival of this diverse and unique primate assemblage in the last rainforest fragments of the human-dominated Upper Brahmaputra Valley.

scholarly journals Long-term persistence of Chikungunya virus neutralizing antibodies in human populations of North Eastern Thailand

2014 ◽  
Vol 11 (1) ◽  
pp. 183 ◽  
Author(s):  
Narong Nitatpattana ◽  
Kobkan Kanjanopas ◽  
Sutee Yoksan ◽  
Wichai Satimai ◽  
Narong Vongba ◽  
...  
Keyword(s):  
Neutralizing Antibodies ◽  
Chikungunya Virus ◽  
Human Populations ◽  
North Eastern

scholarly journals Current status of the threatened Dupont's lark Chersophilus duponti in Spain: overestimation, decline, and extinction of local populations

Oryx ◽  
2005 ◽  
Vol 39 (1) ◽  
pp. 90-94 ◽  
Author(s):  
José L. Tella ◽  
Matthias Vögeli ◽  
David Serrano ◽  
Martina Carrete
Keyword(s):  
Habitat Degradation ◽  
Iucn Red List ◽  
European Population ◽  
Current Status ◽  
Isolated Populations ◽  
Local Populations ◽  
Population Sizes ◽  
Line Transects ◽  
Dupont’S Lark

The European population of Dupont's lark Chersophilus duponti, restricted to Spanish steppe, was estimated to be 13,000 pairs in c. 50 populations in 1988. There is, however, recent evidence that this number was overestimated because of the previous use of line transects for estimating population sizes. In 2002–2004 we surveyed 34 previously known local populations in patches of variable size across half of its Spanish distribution. We found 13 (38%) local populations to be extinct, and a total of only 283–339 territories in 17 of the extant populations, seven of which held <5 territories. This census contrasts dramatically with the estimate of c. 3,000 pairs in the same populations in the 1980s. We estimate that the present Spanish population is c. 1,300 pairs. The discrepancy between this and earlier estimates is partly but not entirely due to previous overestimations. Habitat loss due to ploughing, and possibly habitat degradation and the resulting stochastic extinction of small and isolated populations, have contributed to the species' decline. Urgent research is needed to design and manage an adequate network of steppe patches that will ensure the long-term existence of this species. We recommend that Dupont's lark be categorized on the IUCN Red List as Endangered, both globally and nationally within Spain.

Peacebuilding in India: Meghalaya’s experience

2016 ◽  
Author(s):  
Priyankar Upadhyaya ◽  
Anjoo Sharan Upadhyaya
Keyword(s):  
Political Economy ◽  
Democratic Governance ◽  
Fault Line ◽  
The North ◽  
Development Policies ◽  
North Eastern ◽  
Indian State ◽  
Main Fault ◽  
Jaintia Hills

This chapter discusses the experience of peacebuilding in the north-eastern Indian state of Meghalaya. The authors analyze the potential of the Indian democratic governance in dealing with conflict in this part of the country. Their findings come as a result of the fieldwork undertaken in Khasi, Garo and Jaintia Hills which aimed at scrutinizing the claims on the ‘peacefulness’ of this state. The chapter finds the main fault line in peacebuilding in Meghalaya in the lack of consideration of various patterns of ethnicity issues, and in putting too strong emphasis on underdevelopment and political economy. The authors claim that a comprehensive, long-term approach is needed to successfully rehabilitate former insurgents which should be followed by adjusted development policies, replacing short-term monetary compensations which only foster insurgency.

Problems of the modern society and ethnic separatism in North-Eastern India (NER)

2019 ◽  
Vol 11 (4) ◽  
pp. 315-328
Author(s):  
Sergey Aleksandrovich Mikhailov
Keyword(s):  
Modern Society ◽  
New Delhi ◽  
Eastern India ◽  
Key Factors ◽  
Indian Government ◽  
Systematic Analysis ◽  
Resource Search ◽  
North Eastern ◽  
North Eastern India

This article deals with the issue of North-Eastern India, its current social and economic problems in the context of long-term demonstrations of the ethnic separatism. The main aim of the research implies systematic analysis and identification of key factors and reasons perpetuating separatism in NER as well as resource search which determines Indian strategy in solving this problem. The first part of the article is devoted to separatism peculiarities in the region which remains withdrawn and underexplored in many respects. Apart from this, the author provides a quite detailed analysis of negative mentality of the certain part of NER population which justifiably reproaches New Delhi for “discrimination” and inability to solve many problems of the region. Then the author paid the detailed attention to these problems of NER modern society (ethnic, demographic, economic, transport, social etc.) as well as measures undertaken by the Indian government for its settlement.

scholarly journals Long Term Interactions of Native and Invasive Species in a Marine Protected Area Suggest Complex Cascading Effects Challenging Conservation Outcomes

Diversity ◽  
2021 ◽  
Vol 13 (2) ◽  
pp. 71
Author(s):  
Charalampos Dimitriadis ◽  
Ivoni Fournari-Konstantinidou ◽  
Laurent Sourbès ◽  
Drosos Koutsoubas ◽  
Stelios Katsanevakis
Keyword(s):  
Invasive Species ◽  
Native Species ◽  
High Performance ◽  
Marine Protected Area ◽  
Habitat Degradation ◽  
Population Increase ◽  
Rocky Reef ◽  
Cascading Effects ◽  
High Level

Understanding the interactions among invasive species, native species and marine protected areas (MPAs), and the long-term regime shifts in MPAs is receiving increased attention, since biological invasions can alter the structure and functioning of the protected ecosystems and challenge conservation efforts. Here we found evidence of marked modifications in the rocky reef associated biota in a Mediterranean MPA from 2009 to 2019 through visual census surveys, due to the presence of invasive species altering the structure of the ecosystem and triggering complex cascading effects on the long term. Low levels of the populations of native high-level predators were accompanied by the population increase and high performance of both native and invasive fish herbivores. Subsequently the overgrazing and habitat degradation resulted in cascading effects towards the diminishing of the native and invasive invertebrate grazers and omnivorous benthic species. Our study represents a good showcase of how invasive species can coexist or exclude native biota and at the same time regulate or out-compete other established invaders and native species.

scholarly journals Effect of climate change and deforestation on vector borne diseases in the North-Eastern Indian state of Mizoram bordering Myanmar

2021 ◽  
pp. 100015
Author(s):  
Balasubramani Karuppusamy ◽  
Devojit Kumar Sarma ◽  
Pachuau Lalmalsawma ◽  
Lalfakzuala Pautu ◽  
Krishanpal Karmodiya ◽  
...  
Keyword(s):  
Climate Change ◽  
Vector Borne Diseases ◽  
The North ◽  
North Eastern ◽  
Indian State ◽  
Vector Borne

scholarly journals Dryland Food Security in Ethiopia: Current Status, Opportunities, and a Roadmap for the Future

2021 ◽  
Vol 13 (11) ◽  
pp. 6503
Author(s):  
Yu Peng ◽  
Hubert Hirwa ◽  
Qiuying Zhang ◽  
Guoqin Wang ◽  
Fadong Li
Keyword(s):  
Food Security ◽  
Current Status ◽  
Future Research ◽  
Systematic Research ◽  
Security Assessment ◽  
Security Issue ◽  
Sustainable Development Goal ◽  
Zero Hunger ◽  
The Impact

Given the impact of COVID-19 and the desert locust plague, the Ethiopian food security issue has once again received widespread attention. Its food crisis requires comprehensive and systematic research to achieve the United Nations Sustainable Development Goal of zero hunger. This review discusses the current situation and the causes of food security in Ethiopia. We focus on the challenges in the food security assessment field. The article lists seven typical causes of food insecurity and three roots of food security in Ethiopia. Long-term food security assessment and a comprehensive understanding and manageability for food security causes are considered as the main existing research challenges. Climate-resilient management, water management, and long-term ecosystem network monitoring and data mining are suggested as potential roadmap for future research.

Introgression between non-sister species of honeyeaters (Aves: Meliphagidae) several million years after speciation

2019 ◽  
Vol 128 (3) ◽  
pp. 583-591
Author(s):  
Leo Joseph ◽  
Alex Drew ◽  
Ian J Mason ◽  
Jeffrey L Peters
Keyword(s):  
Gene Flow ◽  
Reproductive Isolation ◽  
Sex Chromosomes ◽  
Common Ancestor ◽  
Sister Species ◽  
Species Boundaries ◽  
North Eastern ◽  
The City

Abstract We reassessed whether two parapatric non-sister Australian honeyeater species (Aves: Meliphagidae), varied and mangrove honeyeaters (Gavicalis versicolor and G. fasciogularis, respectively), that diverged from a common ancestor c. 2.5 Mya intergrade in the Townsville area of north-eastern Queensland. Consistent with a previous specimen-based study, by using genomics methods we show one-way gene flow for autosomal but not Z-linked markers from varied into mangrove honeyeaters. Introgression barely extends south of the area of parapatry in and around the city of Townsville. While demonstrating the long-term porosity of species boundaries over several million years, our data also suggest a clear role of sex chromosomes in maintaining reproductive isolation.

Sign in / Sign up

Export Citation Format

Share Document