522 results match your criteria drivers rainfall

Biotic and abiotic drivers of dispersion dynamics in a large-bodied tropical vertebrate, the Western Bornean orangutan.

Oecologia 2021 Jun 18. Epub 2021 Jun 18.

One Forest Project, Gunung Palung National Park, Ketapang, West Kalimantan, Indonesia.

Understanding of animal responses to dynamic resource landscapes is based largely on research on temperate species with small body sizes and fast life histories. We studied a large, tropical mammal with an extremely slow life history, the Western Bornean orangutan (Pongo pygmaeus wurmbii), across a heterogeneous natural landscape encompassing seven distinct forest types. Our goals were to characterize fluctuations in abundance, test hypotheses regarding the relationship between dispersion dynamics and resource availability, and evaluate how movement patterns are influenced by abiotic conditions. Read More

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Transport and fate of antibiotics in a typical aqua-agricultural catchment explained by rainfall events: Implications for catchment management.

J Environ Manage 2021 Jun 5;293:112953. Epub 2021 Jun 5.

School of Environment, Beijing Normal University, Beijing, 100875, China.

Antibiotics receive many concerns since their negative environmental impacts are being revealed, especially in aqua-agricultural areas. Rainfall events are responsible for transferring excess contaminants to receiving waters. However, the understanding of antibiotics transport and fate responding to rainfall events was constrained by limited event-based data and lacking integrated consideration of dissolved and particulate forms. Read More

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Soil capacity of intercepting different rainfalls across subtropical plantation: Distinct effects of plant and soil properties.

Sci Total Environ 2021 Aug 16;784:147120. Epub 2021 Apr 16.

University of Calgary, Calgary T2N1N4, Canada.

Forest management practices play an important role in soil water conservation. However, the soil water-holding capacity and associated drivers under different management practices remain uncertain, especially when the precipitation varies substantially at the regional scale. Here, we used hydrogen stable isotope to explore the contribution of rainfall to soil water (CRSW) under light, moderate and heavy precipitation in Pinus massoniana plantations with multiple management practices (pure stand, mixed stand, understory removal, light-intensity thinning and high-intensity thinning) in subtropical China. Read More

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Causal graph analysis of COVID-19 observational data in German districts reveals effects of determining factors on reported case numbers.

PLoS One 2021 27;16(5):e0237277. Epub 2021 May 27.

Central Research Institute of Ambulatory Health Care in Germany (Zi), Berlin, Germany.

Several determinants are suspected to be causal drivers for new cases of COVID-19 infection. Correcting for possible confounders, we estimated the effects of the most prominent determining factors on reported case numbers. To this end, we used a directed acyclic graph (DAG) as a graphical representation of the hypothesized causal effects of the determinants on new reported cases of COVID-19. Read More

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[Characteristics and Drivers of Dissolved Carbon Dioxide and Methane Concentrations in the Nantiaoxi River System in the Upper Reaches of the Taihu Lake Basin During Summer-Autumn].

Huan Jing Ke Xue 2021 Jun;42(6):2826-2838

State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Hangzhou 311300, China.

Inland waters are vital sinks for active carbon (C) and potential sources of greenhouse gas emissions. In this study, the characteristics of dissolved carbon dioxide (CO) and methane (CH) concentrations in the Nantiaoxi River system in the upper reaches of the Taihu Lake basin were observed between Jul. 2019 and Nov. Read More

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Spatial properties affecting the sensitivity of soil water dissolved organic carbon long-term median concentrations and trends.

Sci Total Environ 2021 Aug 23;780:146670. Epub 2021 Mar 23.

Soil Research Centre, Department of Geography and Environmental Science, University of Reading, Reading RG6 6DW, UK.

It is increasingly clear that increases in dissolved organic carbon in upland waters in recent decades have often been dominated by acid deposition, but reasons for substantial variation in rates of change remain unclear. This paper focuses on the extent to which spatial properties, such as variation in soil properties, atmospheric deposition and climate, affect the sensitivity of DOC concentrations in soil water. The purpose is to i) examine evidence for differences in site average concentrations and trends in soil water DOC between sites with contrasting ecosystem properties, i. Read More

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Enhanced spatiotemporal heterogeneity and the climatic and biotic controls of autumn phenology in northern grasslands.

Sci Total Environ 2021 Sep 17;788:147806. Epub 2021 May 17.

Department of Forest Ecology and Management, Swedish University of Agricultural Sciences, 90183 Umeå, Sweden. Electronic address:

Knowledge of the response of grassland phenology towards climatic factors is essential to improve our understanding of ecological processes under global warming. To date, however, it remains unclear how climate change and associated changes in vegetation dynamics might affect autumn phenology of grasslands at the global scale. In this study, the trends in start of growing season (SOS) and end of growing season (EOS) dates were explored using remote sensing data (1981-2014). Read More

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September 2021

Dancing in the rain: how do abiotic conditions influence sexually selected behaviors in the White-ruffed Manakin?

Integr Comp Biol 2021 May 20. Epub 2021 May 20.

Division of Biology, Kansas State University, Manhattan, KS 66506, USA.

Tropical animals respond to rainfall in population-specific ways. In extremely wet regions, endotherms experience heavy rains as stressors with consequences for behavior and demography. Ultimately, such stressors can affect the relative strength of abiotic selection, reducing the scope for sexual selection and other biotic sources of selection. Read More

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Charting a perfect storm of water quality pressures.

Sci Total Environ 2021 Sep 7;787:147576. Epub 2021 May 7.

School of Geography and Environmental Sciences, Ulster University, Coleraine, Northern Ireland, UK.

The agri-food economy can be a significant driver of water quality pressures but the role of hydro-meteorological patterns in a changing climate also requires consideration. For this purpose, an assessment was made of a ten-year synchronous high temporal resolution water quality and hydro-meteorological dataset in Irish agricultural catchments. Changes occurring to rainfall intensity and soil temperature patterns were found to be important drivers of nutrient mobility in soils. Read More

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September 2021

A multi-model approach to assessing the impacts of catchment characteristics on spatial water quality in the Great Barrier Reef catchments.

Environ Pollut 2021 May 10;288:117337. Epub 2021 May 10.

Department of Infrastructure Engineering, The University of Melbourne, Parkville, VIC, 3010, Australia.

Water quality monitoring programs often collect large amounts of data with limited attention given to the assessment of the dominant drivers of spatial and temporal water quality variations at the catchment scale. This study uses a multi-model approach: a) to identify the influential catchment characteristics affecting spatial variability in water quality; and b) to predict spatial variability in water quality more reliably and robustly. Tropical catchments in the Great Barrier Reef (GBR) area, Australia, were used as a case study. Read More

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Appl Environ Microbiol 2021 May 14. Epub 2021 May 14.

Emerging Pathogens Institute, University of Florida, Gainesville, Florida, USA.

Pond irrigation water comprises a major pathway of pathogenic bacteria to fresh produce. Current regulatory methods have been shown to be ineffective assessing this risk when variability of bacterial concentrations is large. This paper proposes using mechanistic modeling of bacterial transport as a way to identify improved strategies for mitigating this risk pathway. Read More

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Optimising the cost of roadkill surveys based on an analysis of carcass persistence.

J Environ Manage 2021 Aug 8;291:112664. Epub 2021 May 8.

Wildlife and Reserve Management Research Group, Department of Zoology and Entomology, Rhodes University, Grahamstown, 6140, South Africa; School of Biology and Environmental Sciences, University of Mpumalanga, Nelspruit, 1200, South Africa.

Reliable estimates of wildlife mortality due to wildlife-vehicle collisions are key to understanding its impact on wildlife populations and developing strategies to prevent or reduce collisions. Standardised approaches for monitoring roadkill are needed to derive robust and unbiased estimates of mortality that are comparable across different study systems and ecological contexts. When designing surveys, there is a trade-off between survey frequency (and hence logistical effort and financial cost) and carcass detection. Read More

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Predictors of helminth parasite infection in female chacma baboons ().

Int J Parasitol Parasites Wildl 2021 Apr 26;14:308-320. Epub 2021 Mar 26.

Department of Evolutionary Anthropology, Duke University, Durham, NC, 27710, USA.

Helminth parasite infection can impose major consequences on host fitness. Several factors, including individual characteristics of hosts, environmental conditions, and patterns of coinfection, are thought to drive variation in parasite risk. Here, we report on four key drivers of parasite infection-phase of reproduction, steroid hormone profiles, rainfall, and patterns of coinfection-in a population of wild female chacma baboons () in South Africa. Read More

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Holm oak fecundity does not acclimate to a drier world.

New Phytol 2021 07 17;231(2):631-645. Epub 2021 May 17.

CEFE, Université de Montpellier, CNRS, EPHE, IRD, 1919 route de Mende, Montpellier Cedex 5, 34293, France.

Climate change might impact tree fecundity by altering the relative influences of meteorological and physiological drivers, and by modifying resource investment in reproduction. Using a 13-yr monitoring of Quercus ilex reproduction in a rainfall exclusion experiment, we analysed the interactive effects of long-term increased aridity and other environmental drivers on the inter-annual variation of fecundity (male flower biomass, number of initiated and mature fruits). Summer-autumn water stress was the main driver of fruit abortion during fruit growth. Read More

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Global patterns and drivers of rainfall partitioning by trees and shrubs.

Glob Chang Biol 2021 Jul 6;27(14):3350-3357. Epub 2021 May 6.

CREAF, Cerdanyola del Vallès, Spain.

Spatiotemporal redistribution of incident rainfall in vegetated ecosystems results from the partitioning by plants into intercepted, stemflow, and throughfall fractions. However, variation in patterns and drivers of rainfall partitioning across global biomes remains poorly understood, which limited the ability of climate models to improve the predictions of biome hydrological cycle under global climate change scenario. Here, we synthesized and analyzed the partitioning of incident rainfall into interception, stemflow, and throughfall by trees and shrubs at the global scale using 2430 observations from 236 independent publications. Read More

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Current and future carbon stocks in coastal wetlands within the Great Barrier Reef catchments.

Glob Chang Biol 2021 Jul 4;27(14):3257-3271. Epub 2021 May 4.

Centre for Integrative Ecology, School of Life and Environmental Sciences, Deakin University, Burwood, Vic, Australia.

Australia's Great Barrier Reef (GBR) catchments include some of the world's most intact coastal wetlands comprising diverse mangrove, seagrass and tidal marsh ecosystems. Although these ecosystems are highly efficient at storing carbon in marine sediments, their soil organic carbon (SOC) stocks and the potential changes resulting from climate impacts, including sea level rise are not well understood. For the first time, we estimated SOC stocks and their drivers within the range of coastal wetlands of GBR catchments using boosted regression trees (i. Read More

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Extreme changes in salinity drive population dynamics of Catostylus mosaicus medusae in a modified estuary.

Mar Environ Res 2021 Jun 25;168:105306. Epub 2021 Mar 25.

Australian Rivers Institute - Coasts and Estuaries, Griffith School of Environment and Science, Griffith University, Gold Coast, QLD, Australia.

Modifications to estuaries through the construction of barrages alter the natural dynamics of inhabitant species by controlling freshwater inputs into those systems. To understand the effects of modified freshwater flows on a native scyphozoan jellyfish, Catostylus mosaicus, and to identify the environmental drivers of medusa occurrence, we analysed a 20-year observational dataset composed of 11 environmental variables and medusa presence/absence from 15 sampling stations located below the Fitzroy Barrage, in the Fitzroy River, Queensland. Major decreases in salinity (minimum salinity 0) occurred approximately 16 times during the 20-year period and medusae disappeared from the estuary following every major freshwater flow event. Read More

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Interrelated impacts of climate and land-use change on a widespread waterbird.

J Anim Ecol 2021 05 22;90(5):1165-1176. Epub 2021 Mar 22.

National Audubon Society, New York, NY, USA.

Together climate and land-use change play a crucial role in determining species distribution and abundance, but measuring the simultaneous impacts of these processes on current and future population trajectories is challenging due to time lags, interactive effects and data limitations. Most approaches that relate multiple global change drivers to population changes have been based on occurrence or count data alone. We leveraged three long-term (1995-2019) datasets to develop a coupled integrated population model-Bayesian population viability analysis (IPM-BPVA) to project future survival and reproductive success for common loons Gavia immer in northern Wisconsin, USA, by explicitly linking vital rates to changes in climate and land use. Read More

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Unraveling the drivers of intensified landslide regimes in Western Ghats, India.

Sci Total Environ 2021 May 23;770:145357. Epub 2021 Jan 23.

State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu 610059, People's Republic of China.

The Western Ghats (WG) mountain range in the Indian sub-continent is a biodiversity hotspot, now faces a severe threat to the valley population and ecosystem because of changing rainfall patterns and land-use changes. Here, we use the 2018-2019 landslide inventory data together with various geo-environmental factors and show that the landslide activity in the WG region is amplified by anthropogenic disturbances. We applied a generalized feature selection algorithm and a random forest susceptibility model to demonstrate the major topographic controls of landslides and the risk associated with them in the WG region. Read More

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A new tale of lost tails: Correlates of tail breakage in the worm lizard .

Ecol Evol 2020 Dec 19;10(24):14247-14255. Epub 2020 Nov 19.

Departamento de Ciências Biológicas Universidade Federal da Paraíba Areia Paraiba Brazil.

Predator-prey interactions are important evolutionary drivers of defensive behaviors, but they are usually difficult to record. This lack of data on natural history and ecological interactions of species can be overcome through museum specimens, at least for some reptiles. When facing aggressive interactions, reptile species may exhibit the defensive behavior of autotomy by losing the tail, which is also known as "urotomy". Read More

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December 2020

Immediate and delayed effects of climatic factors on hospital admissions for schizophrenia in Queensland Australia: A time series analysis.

Environ Res 2021 Jun 11;197:111003. Epub 2021 Mar 11.

School of Public Health and Social Work, Faculty of Health, Queensland University of Technology, Queensland, Australia.

Background: Evidence of immediate and delayed effects of climatic drivers on hospital admissions for schizophrenia is limited and inconsistent. We aimed to assess the association between climatic factors and daily hospital admissions for schizophrenia in Queensland, Australia.

Methods: Daily hospital admissions for schizophrenia from January 1, 1996 to December 31, 2015 in all private and public hospitals of Queensland were obtained from Queensland Health. Read More

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Burning in southwestern Brazilian Amazonia, 2016-2019.

J Environ Manage 2021 May 4;286:112189. Epub 2021 Mar 4.

Instituto Nacional de Pesquisas da Amazônia - INPA, Av. André Araújo, 2036, Manaus, AM, CEP 69375-067, Brazil. Electronic address:

Fire is one of the most powerful modifiers of the Amazonian landscape and knowledge about its drivers is needed for planning control and suppression. A plethora of factors may play a role in the annual dynamics of fire frequency, spanning the biophysical, climatic, socioeconomic and institutional dimensions. To uncover the main forces currently at play, we investigated the area burned in both forested and deforested areas in the outstanding case of Brazil's state of Acre, in southwestern Amazonia. Read More

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Fermented food consumption in wild nonhuman primates and its ecological drivers.

Am J Phys Anthropol 2021 Mar 2. Epub 2021 Mar 2.

Graduate School of Asian and African Area Studies, Kyoto University, Kyoto, Japan.

Objectives: Although fermented food use is ubiquitous in humans, the ecological and evolutionary factors contributing to its emergence are unclear. Here we investigated the ecological contexts surrounding the consumption of fruits in the late stages of fermentation by wild primates to provide insight into its adaptive function. We hypothesized that climate, socioecological traits, and habitat patch size would influence the occurrence of this behavior due to effects on the environmental prevalence of late-stage fermented foods, the ability of primates to detect them, and potential nutritional benefits. Read More

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Effects of rainfall, temperature and topography on malaria incidence in elimination targeted district of Ethiopia.

Malar J 2021 Feb 19;20(1):104. Epub 2021 Feb 19.

Department of Medical Laboratory Sciences and Pathology, College of Health Sciences, Jimma University, Jimma, Ethiopia.

Background: Climate and environmental factors could be one of the primary factors that drive malaria transmission and it remains to challenge the malaria elimination efforts. Hence, this study was aimed to evaluate the effects of meteorological factors and topography on the incidence of malaria in the Boricha district in Sidama regional state of Ethiopia.

Methods: Malaria morbidity data recorded from 2010 to 2017 were obtained from all public health facilities of Boricha District in the Sidama regional state of Ethiopia. Read More

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February 2021

Flower consumption, ambient temperature and rainfall modulate drinking behavior in a folivorous-frugivorous arboreal mammal.

PLoS One 2021 19;16(2):e0236974. Epub 2021 Feb 19.

Escola de Ciências da Saúde e da Vida, Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil.

Water is vital for the survival of any species because of its key role in most physiological processes. However, little is known about the non-food-related water sources exploited by arboreal mammals, the seasonality of their drinking behavior and its potential drivers, including diet composition, temperature, and rainfall. We investigated this subject in 14 wild groups of brown howler monkeys (Alouatta guariba clamitans) inhabiting small, medium, and large Atlantic Forest fragments in southern Brazil. Read More

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February 2021

Describing fine spatiotemporal dynamics of rat fleas in an insular ecosystem enlightens abiotic drivers of murine typhus incidence in humans.

PLoS Negl Trop Dis 2021 02 18;15(2):e0009029. Epub 2021 Feb 18.

UMR PIMIT, Univ La Réunion, INSERM, CNRS, IRD, CYROI, Sainte-Clotilde, Reunion Island, France.

Murine typhus is a flea-borne zoonotic disease that has been recently reported on Reunion Island, an oceanic volcanic island located in the Indian Ocean. Five years of survey implemented by the regional public health services have highlighted a strong temporal and spatial structure of the disease in humans, with cases mainly reported during the humid season and restricted to the dry southern and western portions of the island. We explored the environmental component of this zoonosis in an attempt to decipher the drivers of disease transmission. Read More

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February 2021

Extreme weather events and dengue outbreaks in Guangzhou, China: a time-series quasi-binomial distributed lag non-linear model.

Int J Biometeorol 2021 Jul 17;65(7):1033-1042. Epub 2021 Feb 17.

School of Public Health and Social Work, Queensland University of Technology, Brisbane, Queensland, 4059, Australia.

Dengue transmission is climate-sensitive and permissive conditions regularly cause large outbreaks in Asia-Pacific area. As climate change progresses, extreme weather events such as heatwaves and unusually high rainfall are predicted more intense and frequent, but their impacts on dengue outbreaks remain unclear so far. This paper aimed to investigate the relationship between extreme weather events (i. Read More

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Mega-dams and extreme rainfall: Disentangling the drivers of extensive impacts of a large flooding event on Amazon Forests.

PLoS One 2021 12;16(2):e0245991. Epub 2021 Feb 12.

Embrapa Recursos Genéticos e Biotecnologia, Brasília-DF, Brazil.

Extreme weather events and the presence of mega-hydroelectric dams, when combined, present an emerging threat to natural habitats in the Amazon region. To understand the magnitude of these impacts, we used remote sensing data to assess forest loss in areas affected by the extreme 2014 flood in the entire Madeira River basin, the location of two mega-dams. In addition, forest plots (26 ha) were monitored between 2011 and 2015 (14,328 trees) in order to evaluate changes in tree mortality, aboveground biomass (AGB), species composition and community structure around the Jirau reservoir (distance between plots varies from 1 to 80 km). Read More

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February 2021

Characterizing the environmental drivers of the abundance and distribution of Alopecurus myosuroides on a national scale.

Pest Manag Sci 2021 Jun 19;77(6):2726-2736. Epub 2021 Feb 19.

Department of Animal & Plant Sciences, University of Sheffield, Sheffield, UK.

Background: Arable weeds threaten farming and food production, impacting on productivity. Large-scale data on weed populations are typically lacking, and changes are frequently undocumented until they reach problem levels. Managing the future spread of weeds requires that we understand the factors that influence current densities and distributions. Read More

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A live attenuated-vaccine model confers cross-protective immunity against different species of the Leptospira genus.

Elife 2021 Jan 26;10. Epub 2021 Jan 26.

Department of Epidemiology of Microbial Diseases; Yale School of Public Health, New Haven, United States.

Leptospirosis is the leading zoonotic disease in terms of morbidity and mortality worldwide. Effective prevention is urgently needed as the drivers of disease transmission continue to intensify. The key challenge has been developing a widely applicable vaccine that protects against the >300 serovars that can cause leptospirosis. Read More

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January 2021