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... Extreme climate events as heatwaves, floods and storms cause acute changes in season variability influencing primary production and are very likely to increase in magnitude and/or frequency (IPCC, AR5, WGI)1,2.In the present study 22 primarily Nordic barley accessions were grown in four basic climate treatments of 1) 19/12°C (day/night) and 400ppm carbon dioxide concentration [CO2] mimicking ambie ...
... Timing and magnitude of surface uplift are key to understanding the impact of crustal deformation and topographic growth on atmospheric circulation, environmental conditions, and surface processes. Uplift of the East African Plateau is linked to mantle processes, but paleoaltimetry data are too scarce to constrain plateau evolution and subsequent vertical motions associated with rifting. Here, we ...
dry season; humid zones; arid zones; evapotranspiration; reforestation; models; climate change; time series analysis; land cover; hydrologic cycle; China
Abstract:
... Evapotranspiration (ET) is an important flux term in the terrestrial hydrologic cycle system that integrated atmospheric and land surfaces, hydrological and biological processes. Any variations of the hydrological processes induced by climate change and forest management would be significantly reflected in ET component.In this paper, we firstly calculated Guangdong's 50-year annual, humid- and dry ...
basins; case studies; clay; climate; climate change; drilling; drying; lakes; models; sand; shrinkage; silt; tectonics; China
Abstract:
... How sediment grain size corresponds to both climate change and tectonics is increasingly the focus of debate. The shrinkage and migration of the huge paleo-lake in the western Qaidam Basin (WQB), NE Tibetan Plateau (TP) provide an excellent case study. We present a nearly 6Ma well-dated high-resolution grain size record from the 723-m-deep drill core SG-1b (located in the Jianshan Anticline in the ...
... Millets possess advantages such as early maturing, drought tolerance, require minimal purchased inputs and mostly free from biotic and abiotic stresses which makes them ‘climate smart crops’. Proso millet (Panicum miliaceum L.) is mainly grown intemperate and subtropical regions of Asia and USA. Dormancy of proso millet is generally attributed to itscoat colour and ABA content. A laboratory experi ...
Susana S. Araújo; Steve Beebe; Martin Crespi; Bruno Delbreil; Esther M. González; Veronique Gruber; Isabelle Lejeune-Henaut; Wolfgang Link; Maria J. Monteros; Elena Prats; Idupulapati Rao; Vincent Vadez; Maria C. Vaz Patto
... Legumes are well recognized for their nutritional and health benefits as well as for their impact in the sustainability of agricultural systems. The threatening scenario imposed by climate change highlights the need for concerted research approaches in order to develop crops that are able to cope with environmental stresses, while increasing yield and quality. During the last decade, some physiolo ...
... Many tropical ectotherms are considered vulnerable to anthropogenic climate change because they have evolved to become thermal specialists. Indeed, several recent studies have suggested that even small increases in mean operative temperature may lead to a reduction in activity and the subsequent extinction of populations. Within the tropics, lizards are considered particularly vulnerable due to th ...
... BACKGROUND: Abiotic conditions provide cues that drive tick questing activity. Defining these cues is critical in predicting biting risk, and in forecasting climate change impacts on tick populations. This is particularly important for Ixodes ricinus nymphs, the vector of numerous pathogens affecting humans. METHODS: A 6-year study of the questing activity of I. ricinus was conducted in Central Bo ...
Cécile Sulmon; Joan van Baaren; Francisco Cabello-Hurtado; Gwenola Gouesbet; Françoise Hennion; Cendrine Mony; David Renault; Myriam Bormans; Abdelhak El Amrani; Claudia Wiegand; Claudia Gérard
abiotic stress; anthropogenic activities; climate change; ecosystems; energy; invertebrates; life history; microorganisms; photosynthesis; plants (botany); population dynamics; stress response
Abstract:
... Organisms are regularly subjected to abiotic stressors related to increasing anthropogenic activities, including chemicals and climatic changes that induce major stresses. Based on various key taxa involved in ecosystem functioning (photosynthetic microorganisms, plants, invertebrates), we review how organisms respond and adapt to chemical- and temperature-induced stresses from molecular to popula ...
... Soil nutrient supply is likely to change in the Arctic due to altered process rates associated with climate change. Here, we compare the responses of herbaceous tundra and birch forest understory to fertilization, considering both above- and below-ground responses. We added nitrogen and phosphorus to plots in both vegetation types for three years near Abisko, northern Sweden, and measured the effe ...
Carpinus betulus; Fagus sylvatica subsp. orientalis; Quercus; aboveground biomass; allometry; biomass production; branches; carbon sequestration; climate change; equations; leaf area; leaves; prediction; temperate forests; tree and stand measurements; trees; Iran
Abstract:
... Biomass equations are essential for evaluating the climate change mitigation potential of forests through biomass accumulation and carbon sequestration. In northern Iran’s Hyrcanian forests, topographic relief is so extreme that developing biomass equations from destructive sampling of trees is physically challenging. In this paper, allometric biomass and leaf area equations were developed for thr ...
... Local abiotic conditions (microclimates) vary spatially and selection of favorable microclimates within a habitat can influence an animal’s energy budgets, behavior, and ultimately, fitness. Insectivorous birds that inhabit the understory of tropical forests may be especially sensitive to environmental variation and may select habitat based on microclimatic (e.g. temperature, humidity, light) cond ...
... Organic matter is the soil component most affected by wildfires, both in terms of abundance and composition. Fire-induced alteration of soil organic matter (SOM) depends on heating intensity and duration, oxygen availability and other factors related to topography, climate, soil and vegetation features. Particularly affected by fire is the litter layer, but SOM from the uppermost mineral soil can ...
Thomas L. Anderson; Daniel J. Hocking; Christopher A. Conner; Julia E. Earl; Elizabeth B. Harper; Michael S. Osbourn; William E. Peterman; Tracy A. G. Rittenhouse; Raymond D. Semlitsch
... Phenology often determines the outcome of interspecific interactions, where early-arriving species often dominate interactions over those arriving later. The effects of phenology on species interactions are especially pronounced in aquatic systems, but the evidence is largely derived from experimental studies. We examined whether differences in breeding phenology between two pond-breeding salamand ...
... This study presents the first in-situ measurements of the chlorophyll a oxidation product, hydroxychlorophyll a as well as the chlorophyll a precursor, chlorophyll aP276 conducted over an annual cycle. Chlorophyll a oxidation products, such as hydroxychlorophyll a may be associated with the decline of algal populations and can act as an initial step in the degradation of chlorophyll a into product ...
agricultural development; climate change; data collection; education; farm income; farmers; farming systems; food security; issues and policy; pests; radio; rain; risk management; socioeconomic development; surveys; weather forecasting; Eastern Africa; Western Africa
Abstract:
... Unfavorable weather currently ranks among the major challenges facing agricultural development in many African countries. Impact mitigation through access to reliable and timely weather forecasts and other adaptive mechanisms are foremost in Africa’s policy dialogues and socio-economic development agendas. This paper analyzed the factors influencing access to forecasts on incidence of pests/diseas ...
heat; interviews; planning; public health; public sector; risk; risk management; risk managers; United Kingdom
Abstract:
... This paper explores how disaster risk knowledge shapes local heat wave risk management in London, UK. Its focus is on the implementation of the UK National Heatwave Plan through public sector organizations in London. Empirical evidence stems from 49 semi‐structured, expert interviews with risk managers from local authorities, and health and social care organizations in London. Findings suggest tha ...
United Nations Framework Convention on Climate Change; climate; climate change; greenhouse gas emissions; greenhouse gases; issues and policy; social inequality; India
Abstract:
... This study focusing on the climate equity debate in the context of GHG mitigation explores design of a framework that is based on the ‘common but differentiated responsibilities’ principle of the United Nations Framework Convention on Climate Change (UNFCCC). Besides incorporating the widely recognized differences among countries such as current and historic GHG emissions and capabilities, the fra ...
afforestation; climate; climate change; cooling; crop yield; deforestation; emissions; energy crops; forests; fossil fuels; grasslands; issues and policy; land cover; land use; methodology; models; shrublands; shrubs; snow
Abstract:
... We demonstrate the effectiveness of a new method for quantifying radiative forcing from land use and land cover change (LULCC) within an integrated assessment model, the Global Change Assessment Model (GCAM). The method relies on geographically differentiated estimates of radiative forcing from albedo change associated with major land cover transitions derived from the Community Earth System Model ...
... In modern soil science, one of the most important trends is in research, evaluation and analysis of anthropogenic transformation of soils and soil cover of the Earth and its regions. The complex and interdisciplinary nature of the research problem of anthropogenic transformation of soils and their changes over the time are increasingly forcing the conduct of these studies by international research ...