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A remote sensing based analysis of climate change in Sikkim supported by evidence from the field

Journal of Mountain Science 2021年第5期18卷 1256-1267页

作者： Rumia BASU Gourav MISRA dipto sarkar Department of Earth and Ocean Sciences National University of IrelandH91TK33 GalwayIreland Department of Geography University College CorkT12K8AF CorkIreland Department of Geography and Environmental Studies Carleton UniversityK1S5B6 OttawaCanada

The Himalayas hailed as the‘water towers of the world’feed many perennial rivers which form the lifeline of the Indian *** change induced rising global temperatures and changing rainfall patterns are currently threatening the glaciers that feed the *** combination of these factors is causing water stresses to a part of the world which is usually considered water *** there are some large-scale studies done in the Himalayas,regional analysis of changing rainfall patterns and their impacts on vegetation and agriculture is *** we focus on the Indian state of Sikkim located in the Eastern Himalayas to evaluate these issues using mixed *** use satellite data from PERSIANN and MODIS to characterise the regional rainfall,vegetation,and surface temperature trends between 2001 and *** the analysis shows overall declining rainfall trends across most land cover classes,the trends in temperature are mostly positive for the period of study,with winter Land Surface Temperature(LST)values showing the largest area with marginally significant(p<0.1)positive *** contrast,such patterns are not observed for ***,the interviews corroborate that even agriculture is impacted,implying that the trends continue at finer spatial scales *** lack of government support for adaptation and mitigation is also lamented placing the communities at a precarious position to continuing climate change.

关键词： Climate change Rainfall Temperature Vegetation Mixed methods Sikkim

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Long-term trends in a forest ungulate community: park establishment increases numbers, but poaching is a constant threat

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Zoological Research 2021年第2期42卷 207-211页

作者： Rong Hou Rafael Reyna-Hurtado Patrick Omeja Charles Tumwesigye dipto sarkar Jan F.Gogarten Colin A.Chapman Department of Anthropology McGill UniversityMontrealQC H3A 2A7Canada Shaanxi Key Laboratory for Animal Conservation Northwest UniversityXi’anShaanxi 710069China El Colegio de la Frontera Sur ECOSURCampecheMéxico Makerere University Biological Field Station Fort PortalUganda Uganda Wildlife Authority PO Box 3530Kampala 24500Uganda Department of Geography and Environmental Studies Carleton UniversityOttawa M5B 2K3Canada Viral Evolution and Epidemiology of Highly Pathogenic Microorganisms Robert Koch InstituteSeestraße 1013353BerlinGermany School of Life Sciences University of KwaZulu-NatalPietermaritzburgSouth Africa Department of Anthropology Center for the Advanced Study of Human PaleobiologyGeorge Washington UniversityWashington DC 20052USA

DEAR EDITOR Deforestation represents one of the greatest threats to tropical forest mammals, and the situation is greatly exacerbated by bushmeat hunting. To construct informed conservation plans,information must be gathered about responses to habitat degradation, regeneration, and hunting over a sufficiently long period to allow demographic responses.

关键词： forest habitat threat

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A 40-year evaluation of drivers of African rainforest change

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Forest Ecosystems 2021年第4期8卷 887-902页

作者： Colin A.Chapman Carmen Galan-Acedo Jan F.Gogarten Rong Hou Michael J.Lawes Patrick A.Omeja dipto sarkar Anna Sugiyama Urs Kalbitzer Department of Anthropology Center for the Advanced Study of Human PaleobiologyThe George Washington University20037 WashingtonDCUSA Wilson Center 1300 Pennsylvania Avenue NW20004 WashingtonDCUSA School of Life Sciences University of KwaZulu-NatalScottsvillePietermaritzburgSouth Africa Shaanxi Key Laboratory for Animal Conservation Northwest UniversityXi’anChina Escuela Nacional de Estudios Superiores Universidad Nacional Autónoma de MéxicoMoreliaMichoacánMexico Viral Evolution and Epidemiology of Highly Pathogenic Microorganisms Robert Koch InstituteSeestraße 1013353 BerlinGermany Institute of Biodiversity and Environmental Conservation(IBEC) Universiti Malaysia Sarawak94300 Kota SamarahanSarawakMalaysia Makerere University Biological Field Station Fort PortalUganda Department of Geography and Environmental Studies Carleton UniversityOttawaCanada School of Life Sciences Harold L.Lyon ArboretumUniversity of Hawai‘i at Mānoa3190 Maile Way96822 HonoluluHIUSA Department for the Ecology of Animal Societies Max Planck Institute of Animal BehaviorRadolfzellGermany Department of Biology University of KonstanzKonstanzGermany

Background:Tropical forests are repositories of much of the world’s biodiversity and are critical for mitigation of climate ***,the drivers of forest dynamics are poorly *** is in large part due to the lack of long-term data on forest change and changes in ***:We quantify changes in tree abundance,diversity,and stand structure along transects first enumerated in 1978 and resampled 2019 in Kibale National Park,*** tested five ***,based on the purported role of seed dispersal and herbivory and our quantification of changes in the abundance of frugivores and herbivores,we tested two predictions of how faunal change could have influenced forest ***,based on an evaluation of life history strategies,we tested two predictions concerning how the forest could have changed following disturbance that happened prior to written ***,based on a 50-year climate record,we evaluate the possible influence of climate change on forest ***:More trees were present on the assessed transects in 2019(508)than in 1978(436),species richness remained similar,but diversity declined as the number of dominant species *** increased by only 3 mm over the 50 years but this had not significant effect on forest changes measured *** average monthly maximum temperature increased significantly by 1.05℃ over 50 *** abundance of frugivorous and folivorous primates and elephants increased over the 50 years of *** the prediction that an increase in abundance of seed dispersing frugivores increases the abundance of their preferred fruiting tree species,nor that as an increase in folivore abundance causes a decline in their preferred species were *** predicted,light-demanding species decreased in abundance while shade-tolerant species increased as expected from Kibale being disturbed prior to historical ***,while temperature increased over the 50 years,w

关键词： Climate change Elephants Succession Primates Disturbance Forest regeneration

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