scholarly journals Metabarcoding reveals environmental factors influencing spatio-temporal variation in pelagic micro-eukaryotes

2016 ◽  
Vol 25 (15) ◽  
pp. 3593-3604 ◽  
Author(s):  
Pamela M. Brannock ◽  
Alice C. Ortmann ◽  
Anthony G. Moss ◽  
Kenneth M. Halanych
Keyword(s):  
Environmental Factors ◽  
Temporal Variation ◽  
Factors Influencing ◽  
Spatio Temporal

Seasonal control of spatial distribution of soil moisture on a steep hillslope

2018 ◽  
Vol 79 (3) ◽  
pp. 556-565
Author(s):  
Xiaoyi Dong ◽  
Eunhyung Lee ◽  
Yongseok Gwak ◽  
Sanghyun Kim
Keyword(s):  
Soil Moisture ◽  
Environmental Factors ◽  
Temporal Variation ◽  
Principal Component Regression ◽  
Principal Component ◽  
Ecological Processes ◽  
Moisture Profile ◽  
Humid Forest ◽  
Control Factors ◽  
Spatio Temporal

Abstract Spatio-temporal variation in soil moisture plays an important role in hydrological and ecological processes. In the present study, we investigated the effect of environmental factors on variation in soil moisture at a hillslope scale. The relationships among various environmental factors, including soil properties, topographic indices, and vegetation of a humid forest hillslope, and soil moisture distributions were evaluated based on soil moisture data collected at 18 sampling locations over three seasons (spring, rainy, and autumn) at depths of 10, 30, and 60 cm. In order to evaluate the multi-dimensional data sets without the interaction among factors, the principal component regression (PCR) model was applied to identify the factors controlling the spatio-temporal variation in soil moisture. The effects on soil texture and topography were significant in spring. In addition, clay and sand appeared as critical control factors for the study area in all seasons. The transitional control patterns in the soil moisture profile indicated that the control varied depending on features, such as total amount, intensity, and duration, of rainfall events in spring and during the rainy season. The transitional control pattern for autumn showed that vegetation and local slope controlled transitions in topography.

scholarly journals Environmental factors influencing the spatio-temporal distribution of Carybdea marsupialis (Lineo, 1978, Cubozoa) in South-Western Mediterranean coasts

PLoS ONE ◽  
2017 ◽  
Vol 12 (7) ◽  
pp. e0181611 ◽  
Author(s):  
Antonio Canepa ◽  
Verónica Fuentes ◽  
Mar Bosch-Belmar ◽  
Melissa Acevedo ◽  
Kilian Toledo-Guedes ◽  
...  
Keyword(s):  
Environmental Factors ◽  
Temporal Distribution ◽  
Western Mediterranean ◽  
Factors Influencing ◽  
Spatio Temporal ◽  
Carybdea Marsupialis

Spatio-temporal variation of karst ecosystem service value and its correlation with ambient environmental factors

2010 ◽  
Vol 18 (1) ◽  
pp. 189-197
Author(s):  
Ming-Yang ZHANG ◽  
Ke-Lin WANG ◽  
Hui-Yu LIU ◽  
Hong-Song CHEN ◽  
Chun-Hua ZHANG ◽  
...  
Keyword(s):  
Environmental Factors ◽  
Temporal Variation ◽  
Ecosystem Service ◽  
Ecosystem Service Value ◽  
Service Value ◽  
Karst Ecosystem ◽  
Spatio Temporal

Spatio temporal and environmental factors influencing macroalgal β diversity in the Red Sea, Egypt

2014 ◽  
Vol 57 (2) ◽  
Author(s):  
Ahmed A. Issa ◽  
Awatief F. Hifney ◽  
Khayria M. Abdel-Gawad ◽  
Mohamed Gomaa
Keyword(s):  
Environmental Factors ◽  
Red Sea ◽  
Β Diversity ◽  
Factors Influencing ◽  
Spatio Temporal

scholarly journals Spatio-temporal variation in the distribution and abundance of marine cladocerans in relation to environmental factors in a productive lagoon (Güllük Bay, SW Aegean Sea, Turkey)

2020 ◽  
Vol 49 (4) ◽  
pp. 374-382
Author(s):  
Nurçin Killi
Keyword(s):  
Environmental Factors ◽  
Dissolved Oxygen ◽  
Temporal Variation ◽  
Mesh Size ◽  
Aegean Sea ◽  
Cladoceran Species ◽  
Sampling Locations ◽  
Physicochemical Factors ◽  
Spatio Temporal ◽  
Abundance And Distribution

AbstractIn order to understand the effects of some physical (temperature and salinity) and chemical (dissolved oxygen, nitrate and chlorophyll a) factors on the abundance and distribution of cladoceran species, zooplankton samples were seasonally collected between August 2015 and July 2016 from three stations near the entrance to the Boğaziçi Lagoon in Güllük Bay (Aegean Sea, Turkey) using a WP2 plankton net with a mesh size of 200 μm. Four cladoceran species – Penilia avirostris, Pseudevadne tergestina, Evadne spinifera and Pleopis polyphemoides – were found during all sampling events throughout the study period. They showed high abundance in August (4774 ind. m−3) and October (10 706 ind. m−3) as the dominant zooplankton group. The abundance of Penilia avirostris – the dominant cladoceran at all sampling locations – was estimated up to 10 871 ind. m−3 in October. Pseudevadne tergestina was the second dominant cladoceran. In September, only Pseudevadne tergestina and Pleopis polyphemoides were found in samples in small numbers. The abundance of cladocerans varied significantly throughout the seasons. Two physicochemical factors, temperature and dissolved oxygen, were the main drivers of changes in the cladoceran composition.

scholarly journals Ephemeroptera, Plecoptera and Trichoptera assemblages from riffles in mountain streams of Central Brazil: environmental factors influencing the distribution and abundance of immatures

2006 ◽  
Vol 66 (2b) ◽  
pp. 611-622 ◽  
Author(s):  
P. C. Bispo ◽  
L. G. Oliveira ◽  
L. M. Bini ◽  
K. G. Sousa
Keyword(s):  
Environmental Factors ◽  
Temporal Variation ◽  
Water Temperature ◽  
Vegetation Cover ◽  
Water Velocity ◽  
Mountain Streams ◽  
First Order ◽  
Central Brazil ◽  
Factors Influencing ◽  
Collection Sites

The influence of environmental factors on the distribution of Ephemeroptera, Plecoptera and Trichoptera (EPT) immatures was investigated in streams of the Brazilian Center-West (Serra do Pireneus, Pirenópolis, State of Goiás). The insects were sampled by lifting the stones in front of a sieve (0.5 mm mesh) and then removing the insects from both the stone and the sieve. Sampling was carried out for 1 h at 5 collection sites over a period of 14 months. Air and water temperature (°C), water velocity (m/s), discharge (m³/s), electric conductivity (µS/cm), pH, and rainfall (mm) were also recorded. In general, we may state that altitude, hydrologic classification (order) and vegetation cover were the most important factors explaining the distribution of Ephemeroptera, Plecoptera and Trichoptera immatures. The influence of the rainfall on the temporal variation of the abundance of insects was stronger in stream segments of medium order (3rd, 4th order) compared to smaller streams (first order).

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