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You searched for: Publication year rev 7981-2019 Remove constraint Publication year rev: 7981-2019 Subject term environmental factors Remove constraint Subject term: environmental factors Subject term dry season Remove constraint Subject term: dry season
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1. 12th IFDC 2017 Special Issue – Seasonal variations in nutrient composition of plant-based foods produced at the Southern highlands of Ecuador

Author:
Johana Ortiz; Gabriela Astudillo; Michelle Castro; Cecilia Castro; Sonia Astudillo; Silvana Donoso
Source:
Journal of food composition and analysis 2019 pp. -
ISSN:
0889-1575
Subject:
Weibull statistics; atomic absorption spectrometry; biosynthesis; calcium; carbohydrates; colorimetry; copper; dry season; environmental factors; food composition; highlands; iron; magnesium; mineral content; minerals; nutrient content; nutrients; phosphorus; plant-based foods; potassium; seasonal variation; sodium; supermarkets; total nitrogen; vegetables; water content; wet season; zinc; Ecuador
Abstract:
... Changes in environmental conditions may influence the biosynthesis of several food nutrients. This study aimed to compare macronutrient and mineral composition over several seasons in 25 fresh plant-based foods that are highly consumed and locally produced in the southern Ecuadorian highlands. Samples were collected during the rainy season (October 2015–March 2016) and dry season (April–September ...
DOI:
10.1016/j.jfca.2019.103284

2. A 2000-year sediment record reveals rapidly changing sedimentation and land use since the 1960s in the Upper Mara-Serengeti Ecosystem

Author:
Christopher L. Dutton; Amanda L. Subalusky; Troy D. Hill; Julie C. Aleman; Emma J. Rosi; Kennedy B. Onyango; Kanuni Kanuni; Jenny A. Cousins; A. Carla Staver; David M. Post
Source:
Science of the total environment 2019 v.664 pp. 148-160
ISSN:
0048-9697
Subject:
basins; carbon; dry season; ecosystems; environmental factors; land use; mercury; nitrogen; paleoecology; people; pollution load; rivers; sediments; watersheds; wetlands; wildebeest; Eastern Africa; Nile River
Abstract:
... The Mara River basin is a trans-boundary basin of international importance. It forms the headwaters of the Nile River and serves as the primary dry season water source for an estimated 1.1 million rural people and the largest remaining overland migration of 1.4 million wildebeest in the Serengeti-Mara Ecosystem. Changes throughout the basin are impacting the quantity and quality of the Mara River, ...
DOI:
10.1016/j.scitotenv.2019.01.421

3. Aquatic insects decline in abundance and occupy low‐quality artificial habitats to survive hydrological droughts

Author:
Charl Deacon; Michael J. Samways; James S. Pryke
Source:
Freshwater biology 2019 v.64 no.9 pp. 1643-1654
ISSN:
0046-5070
Subject:
aquatic insects; drought; dry season; environmental factors; fauna; freshwater; habitats; hydrochemistry; indigenous species; landscapes; lentic systems; ponds; population characteristics; species richness; urban areas; vegetation cover; water stress; South Africa
Abstract:
... Hydrological extremes have negative impacts on natural, agricultural, and urban landscapes and place substantial ecological pressure on freshwater habitats. However, the role of artificial freshwater habitats during hydrological drought is poorly understood. Insects make up much of total aquatic fauna and lend themselves to understanding how drought impacts freshwater ecosystems. Using the Greater ...
DOI:
10.1111/fwb.13360

4. Assessing the effect of abiotic variables and zooplankton on picocyanobacterial dominance in two tropical mesotrophic reservoirs by means of evolutionary computation

Author:
M.I.A. Rocha; F. Recknagel; R.T. Minoti; V.L.M. Huszar; B. Kozlowsky-Suzuki; H. Cao; F.L.R.M. Starling; C.W.C. Branco
Source:
Water research 2019 v.149 pp. 120-129
ISSN:
0043-1354
Subject:
Cladocera; Copepoda; Cyanobacteria; Rotifera; biotic factors; climate change; dry season; electrical conductivity; environmental factors; models; nauplii; pH; water supply; water temperature; winter; zooplankton; Brazil
Abstract:
... Evolutionary computation has been applied to predict the occurrence of massive cyanobacteria proliferations; in the present study, this tool was further used to explore the factors responsible for maintaining picocyanobacterial dominance. Aiming to increase the understanding of factors that promote dominance of picocyanobacteria in tropical reservoirs, we chose two reservoirs used for water suppli ...
DOI:
10.1016/j.watres.2018.10.067

5. Beetles in Amaranthus hypochondriacus L. during the Dry Season

Author:
Hugo A. Álvarez; Hortensia Carrillo-Ruiz; Jesús F. López-Olguín; Daniel Jiménez-García; Miguel A. Morón†
Source:
Southwestern entomologist 2019 v.44 no.1 pp. 199-204
ISSN:
0147-1724
Subject:
Amaranthus hypochondriacus; Brentidae; Coccinellidae; Diabrotica balteata; Melyridae; dry season; environmental factors; insects; leaves; Mexico
Abstract:
... Grain amaranth, Amaranthus L., is an emerging crop cultivated worldwide. One way in which resources from the amaranth crop could be exploited as an alternative to grain is to grow amaranth in the dry season, harvest only the leaves, and incorporate them into meals. In this environmental condition, insects associated with the amaranth crop are poorly known. Results showed that Diabrotica balteata L ...
DOI:
10.3958/059.044.0122

6. CO2 partial pressure and CO2 degassing in the Daning River of the upper Yangtze River, China

Author:
Maofei Ni; Siyue Li; Jiachen Luo; Xixi Lu
Source:
Journal of hydrology 2019 v.569 pp. 483-494
ISSN:
0022-1694
Subject:
anthropogenic activities; carbon; carbon cycle; carbon dioxide; carbon dioxide production; deaeration; dry season; environmental factors; hydrology; liquid-air interface; rivers; streams; temporal variation; total dissolved nitrogen; total dissolved phosphorus; uncertainty; water reservoirs; water temperature; wet season; China; Yangtze River
Abstract:
... Rivers and streams are important agents for global and regional carbon cycle, which represent a nonnegligible carbon source to the atmosphere. However, carbon dioxide (CO2) degassing via water-air interface from inland waters currently has a large uncertainty in estimation. Here we examined the CO2 partial pressure (pCO2) and CO2 degassing in the Daning River, a main tributary of the Yangtze in th ...
DOI:
10.1016/j.jhydrol.2018.12.017

7. Causes and triggers of deep-seated hillslope instability in the tropics – Insights from a 60-year record of Ikoma landslide (DR Congo)

Author:
Antoine Dille; François Kervyn; Toussaint Mugaruka Bibentyo; Damien Delvaux; Gloire Bamulezi Ganza; Guy Mawe Ilombe; Christian Buzera Kalikone; Evelyne Safari Nakito; Jan Moeyersons; Elise Monsieurs; Charles Nzolang; Benoît Smets; Matthieu Kervyn; Olivier Dewitte
Source:
Geomorphology 2019 pp. -
ISSN:
0169-555X
Subject:
aerial photography; basalt; deformation; dry season; earthquakes; environmental factors; landslides; rain; remote sensing; time series analysis; topographic slope; tropics; Democratic Republic of the Congo
Abstract:
... Studying the causes and triggers of landslides is essential to understand the key process of hillslope evolution and the hazards they generate. Such understanding is crucial in tropical areas where landslide impacts are high and on the rise, and the dearth of accurate processes characterisation is large. Here we investigate the timing and the mechanisms of relatively slow-moving deep-seated landsl ...
DOI:
10.1016/j.geomorph.2019.106835

8. Change and continuity in traditional cattle farming systems of West African Coast countries: A case study from Benin

Author:
Sandrine O. Houessou; Luc Hippolyte Dossa; Rodrigue V.C. Diogo; Marcel Houinato; Andreas Buerkert; Eva Schlecht
Source:
Agricultural systems 2019 v.168 pp. 112-122
ISSN:
0308-521X
Subject:
case studies; cattle; cattle production; cluster analysis; coasts; credit; crossbreds; dry season; environmental factors; farmers; forage; grazing; grazing lands; herd size; interviews; livestock husbandry; market access; principal component analysis; production technology; questionnaires; rangelands; socioeconomic status; socioeconomics; taurine; transhumance; vegetation; veterinary services; water resources; zebu; Benin
Abstract:
... In order to characterize current cattle farming systems with respect to herd mobility and its drivers, 803 cattle farmers were surveyed across three vegetation zones along a North-South transect in Benin. Individual interviews were conducted on the basis of a semi-structured questionnaire which included questions on the socio-economic characteristics of livestock breeders, their herd size and stru ...
DOI:
10.1016/j.agsy.2018.11.003

9. Characteristics of airborne bacteria and fungi in the atmosphere in Ho Chi Minh city, Vietnam - A case study over three years

Author:
Vuong Duc Hai; Sy Minh Tuan Hoang; Nguyen Tri Quang Hung; Nguyen Minh Ky; Bae Gwi-Nam; Park Ki-hong; S.W. Chang; Quang-Vu Bach; Tran T.N. Trang; D. Duc Nguyen
Source:
International biodeterioration & biodegradation 2019 pp. -
ISSN:
0964-8305
Subject:
Aspergillus; Enterobacteriaceae; Fusarium solani; Kocuria varians; Penicillium janthinellum; Staphylococcus aureus; airborne microorganisms; bacteria; bioaerosols; botanical gardens; carbon dioxide; case studies; dry season; environmental factors; fungi; issues and policy; linear models; plate count; relative humidity; residential areas; roads; roadsides; rural areas; seasonal variation; temperature; urban areas; urban planning; zoos; Vietnam
Abstract:
... The purpose of this study was to determine and assess airborne microbial characteristics (bacteria and fungi) in Ho Chi Minh City (HCMC), Vietnam, from 2014 to 2016, as well as identify seasonal variation trends. Airborne samples were collected passively and actively from four different environmental sites: the zoo, road, rural, and urban areas. The major bacterial genera identified were Bacillus ...
DOI:
10.1016/j.ibiod.2019.104819

10. Climate variation influences host specificity in avian malaria parasites

Author:
Alan Fecchio; Konstans Wells; Jeffrey A. Bell; Vasyl V. Tkach; Holly L. Lutz; Jason D. Weckstein; Sonya M. Clegg; Nicholas J. Clark
Source:
Ecology letters 2019 v.22 no.3 pp. 547-557
ISSN:
1461-023X
Subject:
Haemosporida; avian malaria; birds; climate; climate change; dry season; environmental factors; host specificity; hosts; models; parasites; phylogeny; prediction; rain; risk
Abstract:
... Parasites with low host specificity (e.g. infecting a large diversity of host species) are of special interest in disease ecology, as they are likely more capable of circumventing ecological or evolutionary barriers to infect new hosts than are specialist parasites. Yet for many parasites, host specificity is not fixed and can vary in response to environmental conditions. Using data on host associ ...
DOI:
10.1111/ele.13215

11. Community composition and diversity of phytoplankton in relation to environmental variables and seasonality in a tropical mangrove estuary

Author:
A.S.M. Saifullah; Abu Hena Mustafa Kamal; Mohd Hanafi Idris; Amy Halimah Rajaee
Source:
Regional studies in marine science 2019 v.32 pp. 100826
ISSN:
2352-4855
Subject:
Ceratium; Chlorophyceae; Coscinodiscus; Cyanophyceae; Dinophysis caudata; Pleurosigma; ammonium; chlorophyll; community structure; correspondence analysis; dry season; environmental factors; estuaries; hydrology; nitrates; pH; phytoplankton; salinity; silica; species diversity; surface water temperature; wet season; Borneo; Malaysia
Abstract:
... This paper presents the aspects of phytoplankton communities along a tropical mangrove estuary in Sarawak, Malaysia. Data were collected monthly from the study area from January 2013 to December 2013 and was pooled into seasons to examine the influence of seasonality. The estuary revealed relatively species-rich, and a total of 102 species under 43 genera were recorded comprising 6 species of Cyan ...
DOI:
10.1016/j.rsma.2019.100826

12. Contrasted ecological niches shape fungal and prokaryotic community structure in mangroves sediments

Author:
Patricia Luis; Geoffroy Saint‐Genis; Laurent Vallon; Carine Bourgeois; Maxime Bruto; Cyril Marchand; Eric Record; Mylène Hugoni
Source:
Environmental microbiology 2019 v.21 no.4 pp. 1407-1424
ISSN:
1462-2912
Subject:
Ascomycota; Avicennia marina; Basidiomycota; Chloroflexi; Euryarchaeota; Proteobacteria; Rhizophora stylosa; bacteria; coastal sediments; community structure; dry season; ecological differentiation; environmental factors; forest ecosystems; fungal communities; fungi; high-throughput nucleotide sequencing; mangrove sediments; niches; organic matter; trees; vegetation cover
Abstract:
... Mangroves are forest ecosystems located at the interface between land and sea where sediments presented a variety of contrasted environmental conditions (i.e. oxic/anoxic, non‐sulfidic/sulfidic, organic matter content) providing an ideal ecosystem to study microbial communities with niche differentiation and distinct community structures. In this work, prokaryotic and fungal compositions were inve ...
DOI:
10.1111/1462-2920.14571

13. Convergence of physiological responses in woody plants in an Amazonian savanna

Author:
Deliane Vieira Penha; Patrícia Chaves de Oliveira
Source:
Revista brasileira de botânica 2019 v.42 no.3 pp. 575-579
ISSN:
0100-8404
Subject:
dry season; ecosystems; environmental factors; leaves; photosynthesis; physiological response; savannas; stomatal conductance; temperature; water use efficiency; woody plants
Abstract:
... Physiological traits are essential to understand the performance of plants in response to environmental conditions. We describe physiological responses related to gas exchanges in leaves of eight woody species in the savanna ecosystem of the Amazonian domain during the dry season. A portable gas analyzer was used to measure photosynthesis (A), transpiration (E), stomatal conductance (gₛ) and leaf ...
DOI:
10.1007/s40415-019-00546-x

14. Do Local Environmental Factors and Lunar Cycle Influence Timing and Synchrony of Oviposition of a Turtle with Strict Nocturnal Nesting?

Author:
Tibisay Escalona; Nicole Valenzuela; Dean C. Adams
Source:
Diversity 2019 v.11 no.5 pp. -
ISSN:
1424-2818
Subject:
Podocnemis; air temperature; beaches; dry season; environmental factors; females; nesting; nests; oviposition; rain; rivers; social facilitation; turtles
Abstract:
... Timing of nesting affects fitness of oviparous animals living in seasonal environments, and females may cue on environmental factors for their nesting behavior, but these relationships are understudied in tropical turtles. Here, the timing and synchrony of egg-laying relative to environmental factors were examined in the South American freshwater turtle Podocnemis unifilis on 11 nesting beaches du ...
DOI:
10.3390/d11050078

15. Do the key factors determining phytoplankton growth change with water level in China’s largest freshwater lake?

Author:
Zhaoshi Wu; Jutao Liu; Jiacong Huang; Yongjiu Cai; Yuwei Chen; Kuanyi Li
Source:
Ecological indicators 2019 pp. -
ISSN:
1470-160X
Subject:
chlorophyll; data collection; dry season; ecosystems; environmental factors; environmental impact; environmental indicators; freshwater lakes; models; nutrients; orthophosphates; phytoplankton; time series analysis; total phosphorus; turbidity; water flow; water management; water temperature; wet season; China; Yangtze River
Abstract:
... The interpretation of environmental effect on phytoplankton growth is not straightforward, especially in ecosystems with high variation in hydrological conditions due to confounding variables. Lake Poyang is characterized by high fluctuation of water level (WL) due to its free connection to the Yangtze River. High frequency (weekly) and long-term (2009-2018) samplings were conducted in Lake Poyang ...
DOI:
10.1016/j.ecolind.2019.105675

16. Drivers of survival in a small mammal of conservation concern: An assessment using extensive genetic non-invasive sampling in fragmented farmland

Author:
António Proença-Ferreira; Clara Ferreira; Inês Leitão; Joana Paupério; Helena Sabino-Marques; Soraia Barbosa; Xavier Lambin; Paulo Célio Alves; Pedro Beja; Francisco Moreira; António Mira; Ricardo Pita
Source:
Biological conservation 2019 v.230 pp. 131-140
ISSN:
0006-3207
Subject:
DNA; Microtus cabrerae; agricultural land; cost effectiveness; demography; dry season; environmental factors; ethics; feces; genotype; humans; land use; landscapes; microsatellite repeats; models; planning; population size; small mammals; voles; wet season
Abstract:
... Although important to guide conservation management, detailed demographic studies on rare or elusive species inhabiting fragmented, human-dominated landscapes are often hampered by the species' low densities, and the logistic and ethical constraints in obtaining reliable information covering large areas. Genetic non-invasive sampling (gNIS) provides cost-effective access to demographic information ...
DOI:
10.1016/j.biocon.2018.12.021

17. Ecological Drivers of Species Distributions and Niche Overlap for Three Subterranean Termite Species in the Southern Appalachian Mountains, USA

Author:
Chaz Hyseni; Ryan C. Garrick
Source:
Insects 2019 v.10 no.1 pp. -
ISSN:
2075-4450
Subject:
Reticulitermes flavipes; Reticulitermes virginicus; databases; dry season; environmental factors; forests; geographical distribution; indigenous species; insect communities; latitude; models; niches; species identification; subterranean termites; topography; Alabama; Appalachian region; Georgia; North Carolina; Tennessee
Abstract:
... In both managed and unmanaged forests, termites are functionally important members of the dead-wood-associated (saproxylic) insect community. However, little is known about regional-scale environmental drivers of geographic distributions of termite species, and how these environmental factors impact co-occurrence among congeneric species. Here we focus on the southern Appalachian Mountains—a ...
DOI:
10.3390/insects10010033
PubMed:
30669589
PubMed Central:
PMC6359368

18. Ecophysiological performance of four species of Clusiaceae with different modes of photosynthesis in a mosaic of riverine, rupestrian grasslands, and cerrado vegetation in SE-Brazil

Author:
Eduardo A. de Mattos; Fabio R. Scarano; Pedro O. Cavalin; G. Wilson Fernandes; Heinz Rennenberg; Ulrich Lüttge
Source:
Trees 2019 v.33 no.3 pp. 641-652
ISSN:
0931-1890
Subject:
C3 photosynthesis; C3 plants; Calophyllum brasiliense; Clusia; Kielmeyera; acclimation; cerrado; dry season; ecophysiology; environmental factors; forests; functional diversity; grasslands; habitats; photoinhibition; rivers; species diversity; taxonomy; water supply; wet season; Brazil
Abstract:
... KEY MESSAGE: Among four species of Clusiaceae (sensu lato) occurring in a mosaic of different types of tropical vegetation, Kielmeyera coriacea Mart. & Zucc. and Calophyllum brasiliense Camb. were C₃-species with similar performance at micro-sites of contrasting water supply, Clusia criuva Cambess—although potentially a C₃/CAM intermediate species—performed C₃-photosynthesis, while Clusia arrudea ...
DOI:
10.1007/s00468-018-1805-x

19. Effect of Drought, Nitrogen Fertilization, Temperature and Photoperiodicity on Quinoa Plant Growth and Development in the Sahel

Author:
Jorge Alvar-Beltrán; Abdalla Dao; Anna Dalla Marta; Coulibaly Saturnin; Paolo Casini; Jacob Sanou; Simone Orlandini
Source:
Agronomy 2019 v.9 no.10 pp. -
ISSN:
2073-4395
Subject:
Chenopodium quinoa; Sahel; biomass; drought; dry season; environmental factors; fertilizer application; flowering; heat stress; irrigation rates; nitrogen fertilizers; phenology; photoperiodism; plant growth; seeds; soil quality; sowing date; temperature; water stress; water use efficiency; Burkina Faso
Abstract:
... Drought, heat stress, and unfavorable soil conditions are key abiotic factors affecting quinoa’s growth and development. The aim of this research was to examine the effect of progressive drought and N-fertilization reduction on short-cycle varieties of quinoa (c.v. Titicaca) for different sowing dates during the dry season (from October to December). A two-year experimentation (2017–20 ...
DOI:
10.3390/agronomy9100607

20. Effects of the Three Gorges Dam on spatiotemporal distribution of silicon in the tributary: evidence from the Xiangxi River

Author:
Yubo Huang; Wujuan Mi; Zhengyu Hu; Yonghong Bi
Source:
Environmental science and pollution research 2019 v.26 no.5 pp. 4645-4653
ISSN:
0944-1344
Subject:
algae; dams (hydrology); dry season; environmental factors; hydrodynamics; rivers; silica; silicon; statistical analysis; wet season
Abstract:
... In order to get insight into the impact of Three Gorges Dam construction on silicon distribution pattern due to the altered hydraulic and environmental conditions, the Xiangxi River was chosen as the delegate of the tributaries in the Three Gorges Reservoir; dissolved silica (DSi), biogenic silica (BSi), and lithogenic silica (LSi) were investigated monthly from November 2015 to October 2016 and t ...
DOI:
10.1007/s11356-018-3707-2