Composition and intra-annual variation of the macroinfauna in the estuarine zone of the Pando Stream (Uruguay)

We studied the temporal patterns of macroinfaunal distribution in the estuarine portion of Pando Stream, Uruguay. We found a very low number of species and a high dominance of the polychaete Heteromastus similis. There were clear seasonal patterns in abundance with almost all species peaking in autumn, coinciding with the periods of higher salinity. Minimal values were found in winter and spring when salinity was at a minimum. We suggest that the seasonal pattern is a consequence of the combined effects of recruitment, and of high osmotic stress and disturbance during the periods of freshwater discharge that are common in winter and spring.

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Seasonal Variation of Suicide in the City of São Paulo, Brazil, 1996–2010

Crisis ◽

10.1027/0227-5910/a000222 ◽

2014 ◽

Vol 35 (1) ◽

pp. 5-9 ◽

Cited By ~ 10

Author(s):

Daniel Hideki Bando ◽

Fernando Madalena Volpe

Keyword(s):

Seasonal Pattern ◽

Total Sample ◽

Sao Paulo ◽

Seasonal Patterns ◽

São Paulo ◽

Health Statistics ◽

Males And Females ◽

June July ◽

The City ◽

Over Time

Background: In light of the few reports from intertropical latitudes and their conflicting results, we aimed to replicate and update the investigation of seasonal patterns of suicide occurrences in the city of São Paulo, Brazil. Methods: Data relating to male and female suicides were extracted from the Mortality Information Enhancement Program (PRO-AIM), the official health statistics of the municipality of São Paulo. Seasonality was assessed by studying distribution of suicides over time using cosinor analyses. Results: There were 6,916 registered suicides (76.7% men), with an average of 39.0 ± 7.0 observed suicides per month. For the total sample and for both sexes, cosinor analysis estimated a significant seasonal pattern. For the total sample and for males suicide peaked in November (late spring) with a trough in May–June (late autumn). For females, the estimated peak occurred in January, and the trough in June–July. Conclusions: A seasonal pattern of suicides was found for both males and females, peaking in spring/summer and dipping in fall/winter. The scarcity of reports from intertropical latitudes warrants promoting more studies in this area.

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Seasonal pattern of hepatitis E virus prevalence in swine in two different geographical areas of China

Epidemiology and Infection ◽

10.1017/s0950268813000113 ◽

2013 ◽

Vol 141 (11) ◽

pp. 2403-2409 ◽

Cited By ~ 8

Author(s):

Y. H. LU ◽

H. Z. QIAN ◽

A. Q. HU ◽

X. QIN ◽

Q. W. JIANG ◽

...

Keyword(s):

Hepatitis E Virus ◽

Seasonal Pattern ◽

Eastern China ◽

Geographical Area ◽

Hepatitis E ◽

Southwestern China ◽

Seasonal Patterns ◽

Virus Prevalence ◽

Swine Hepatitis ◽

A Minor

SUMMARYWe studied seasonal patterns of swine hepatitis E virus (HEV) infection in China. From 2008 to 2011, 4200 swine bile specimens were collected for the detection of HEV RNA. A total of 92/2400 (3·83%) specimens in eastern China and 47/1800 (2·61%) specimens in southwestern China were positive for HEV. Seasonal patterns differing by geographical area were suggested. In eastern China, the major peak of HEV RNA prevalence was during March–April, with a minor peak during September–October, and a dip during July–August. In southwestern China, the peak was during September–October and the dip during March–April. The majority of subtype 4a cases (63/82, 76·83%) were detected in the first half of the year, while the majority of subtype 4b cases (26/29, 89·66%) were concentrated in the second half of the year, suggesting that different subtypes contribute to different peaks. Our results indicate that the distribution of HEV subtypes is associated with seasonal patterns.

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Seasonal variation in births in rural East Pakistan

Journal of Biosocial Science ◽

10.1017/s0021932000008373 ◽

1972 ◽

Vol 4 (1) ◽

pp. 107-116 ◽

Cited By ~ 23

Author(s):

John Stoeckel ◽

A. K. M. Alauddin Choudhury

Keyword(s):

Seasonal Variation ◽

Social Factors ◽

Seasonal Pattern ◽

Seasonal Patterns ◽

First Order ◽

Monthly Temperature ◽

Monthly Distribution ◽

Number Of Births

SummaryAn analysis of the monthly distribution of births in two areas of Matlab Thana, East Pakistan, indicates that there is a seasonal variation in births different from what would be expected by chance. The highest proportion of births occur in the last three months of a year and the lowest proportion between May and July. Investigation into some of the environmental and social factors which might contribute to the seasonal pattern revealed the following: mean minimum monthly temperature 9 months before birth was inversely related to the number of births; all occupations had seasonal patterns different from what would be expected by chance and the business and mill-and-office occupations had distributions significantly different from each other; the distribution of births for all pregnancy orders was different from chance and the distribution for first order pregnancies was significantly different from those for third and fourth or higher orders.

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KEANEKARAGAMAN JENIS TUMBUHAN PAKU (PTERIDOPHYTA) DI KAWASAN HUTAN TUMBANG MANGGU, KECAMATAN SANAMAN MANTIKEI, KABUPATEN KATINGAN, KALIMANTAN TENGAH

EKOLOGIA ◽

10.33751/ekologia.v20i1.1978 ◽

2020 ◽

Vol 20 (1) ◽

pp. 1-13

Author(s):

Sri Hartini

Keyword(s):

Local Communities ◽

Forest Area ◽

Central Kalimantan ◽

Number Of Species ◽

Asplenium Nidus ◽

Almost All ◽

Helminthostachys Zeylanica ◽

Dicranopteris Linearis

Research on the diversity of ferns in the forests of Tumbang Manggu, Sub-district Sanaman Mantikei, Central Kalimantan, has been done. The study was conducted in March – April 2016 by using explorative methods. The results show, at least 28 species of ferns were found in the forest area, of which 16 species are terrestrial ferns and 12 species of epiphytic ferns. These species are included in 22 genera and 14 families. Huperzia and Pyrrosia are most abundant, each genus were consists of 3 species. The most rich families in term number of species are Polypodiaceae and Lycopodiaceae, with 6 species and 4 species respectively. Abundance of each species in the region was different, Blechnum orientale L., Dicranopteris linearis (Burm. f.) Underw., Lycopodiella cernua (L.) Pic. Serm., and Vittaria scolopendrina (Bory) Schkuhr ex Thwaites were found in large quantities and spread almost all over the region. Asplenium nidus L., Drynaria quercifolia (L.) J. Sm., Stenochlaena palustris (Burm. f.) Bedd., Lygodium circinatum (Burm. f.) Sw., Pyrrosia lanceolata (L.) Farw., Nephrolepis falcata (Cav.) C. Chr. and Vittaria ensiformis Sw. were found in considerable numbers. Asplenium pellucidum Lam., Athyrium bantamense Milde, Helminthostachys zeylanica (L.) Hook. and Tectaria crenata Cav. were found in small quantities and only in certain places. Local communities around the region have not much utilizing the ferns yet.

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Timely estimates of India's annual and monthly fossil CO<sub>2</sub> emissions

Earth System Science Data ◽

10.5194/essd-12-2411-2020 ◽

2020 ◽

Vol 12 (4) ◽

pp. 2411-2421 ◽

Cited By ~ 1

Author(s):

Robbie M. Andrew

Keyword(s):

Carbon Dioxide ◽

Co2 Emissions ◽

Paris Agreement ◽

Seasonal Patterns ◽

Activity Data ◽

Industrial Activity ◽

Significant Events ◽

Emissions Intensity ◽

Almost All ◽

Global Datasets

Abstract. India is the world's third-largest emitter of carbon dioxide and is developing rapidly. While India has pledged an emissions-intensity reduction as its contribution to the Paris Agreement, the country does not regularly report emissions statistics, making tracking progress difficult. Moreover, all estimates of India's emissions in global datasets represent its financial year, which is not aligned to the calendar year used by almost all other countries. Here I compile monthly energy and industrial activity data allowing for the estimation of India's CO2 emissions by month and calendar year with a short lag. Emissions show clear seasonal patterns, and the series allows for the investigation of short-lived but highly significant events, such as the near-record monsoon in 2019 and the COVID-19 crisis in 2020. Data are available at https://doi.org/10.5281/zenodo.3894394 (Andrew, 2020a).

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Seasonal patterns of breeding activity of Atlantic Rainforest anurans at Boracéia, Southeastern Brazil

Amphibia-Reptilia ◽

10.1163/156853802760061804 ◽

2002 ◽

Vol 23 (2) ◽

pp. 161-167 ◽

Cited By ~ 73

Author(s):

Miguel Trefaut Rodrigues ◽

Jaime Bertoluci

Keyword(s):

Atlantic Rainforest ◽

Southeastern Brazil ◽

Seasonal Patterns ◽

Breeding Activity ◽

Monthly Temperature ◽

Anuran Species ◽

Number Of Species ◽

Winter Activity ◽

Calling Activity ◽

Breeding Seasons

AbstractAnnual patterns of breeding activity of 28 anuran species were studied at Boracéia, an Atlantic Rainforest locality in the coastal mountains of Southeastern Brazil. Five patterns were evident: (1) species that call year-round; (2) opportunistic calling activity associated with rainfall; (3) explosive breeding; (4) winter activity; and (5) summer species with variable breeding seasons. The number of species with calling males was positively correlated with mean monthly temperature.

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Spatial and Seasonal Variations of Standardized Photosynthetic Parameters under Different Environmental Conditions for Young Planted Larix olgensis Henry Trees

Forests ◽

10.3390/f9090522 ◽

2018 ◽

Vol 9 (9) ◽

pp. 522 ◽

Cited By ~ 1

Author(s):

Qiang Liu ◽

Fengri Li

Keyword(s):

Environmental Conditions ◽

Seasonal Variations ◽

Seasonal Pattern ◽

Repeated Measurements ◽

Seasonal Patterns ◽

Photosynthetic Parameters ◽

Relative Depth ◽

Larix Olgensis ◽

Vertical Variations ◽

Larix Olgensis Henry

Understanding the spatial and seasonal variations in leaf physiology is critical for accurately modeling the carbon uptake, physiological processes and growth of entire canopies and stands. For a 17-year-old Larix olgensis Henry plantation, vertical whorl-by-whorl sampling and analyses of seasonally repeated measurements of major photosynthetic parameters were conducted, and the correlations between photosynthetic parameters and environmental conditions, leaf morphological traits and spatial position within the crown were analyzed. According to the correlations, the photosynthetic parameters were standardized based on the environmental conditions to avoid the influence of the changing environment on the patterns of spatial and seasonal variations of photosynthetic parameters. The results showed that the standardized light-saturated net photosynthetic rate (SPmax), standardized dark respiration (SRd) and standardized stomatal conductance under saturated light (Sgs-sat) were all negatively related to the relative depth into the crown (RDINC) throughout the growing season. However, their vertical patterns were different during the development of the phenological phase. In addition, different gradients of environmental conditions also influenced the values and the range of the vertical variation in photosynthesis. High temperature and low humidity usually resulted in smaller values and weaker vertical variations of SPmax and Sgs-sat, but larger values and more obvious vertical variations in SRd. SPmax and Sgs-sat usually exhibited a parabolic seasonal pattern in different vertical positions within the crown; however, SRd generally followed a concave pattern. These seasonal patterns were all weaker with increasing RDINC. Different environments also exhibited a significant influence on the seasonal patterns of photosynthesis. We suggested that standardization is necessary before analyzing spatial and seasonal variations. A single environmental condition could not represent the spatial and seasonal patterns under all gradients of the environment. Spatial and seasonal variations should be simultaneously analyzed because they are related to each other.

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Abstract P164: Seasonal patterns of mortality from cardiovascular diseases in Panama.

Circulation ◽

10.1161/circ.125.suppl_10.ap164 ◽

2012 ◽

Vol 125 (suppl_10) ◽

Author(s):

Jorge A Motta ◽

Carlos Gordon ◽

Beatriz Gomez ◽

Eva Castillo ◽

Hugo Herrera-Ballesteros

Keyword(s):

Seasonal Pattern ◽

Activity Patterns ◽

Seasonal Patterns ◽

Seasonal Cycles ◽

Population Activity ◽

Diabetes Mortality ◽

Weather Changes ◽

External Causes ◽

Cv Disease ◽

Seasonal Index

Seasonal patterns of cardiovascular (CV) mortality have been reported in many regions of the world, but mostly in temperate zones. These cycles and seasonal patterns of mortality have been identified by looking at mortality rate series over extended periods of time and by filtering its stochastic components. The reasons for these variations have been attributed to multiple causes. Empirical observations by health care worker have suggested that in Panama there are seasonal changes of CV disease mortality but this phenomenon had not been studied. The speculation is that this may be related to variation in the incidence of respiratory diseases, weather changes or to population activity patterns associated with holidays. Our hypothesis for this study is that in Panama mortality related to CV disease has a seasonal pattern. We compiled from the National Registry of Mortality all deaths that occurred in the country from cardiovascular diseases (n=36,145) and diabetes (n=7,076) for the years 2001–2009. A monthly time series of mortality was calculated and its components were decomposed utilizing moving averages. Elements, like cycle, seasonal occurrence and stochastic components, were separated. We also developed a seasonal index of mortality for these diseases. For the same years, we performed a similar analysis for all deaths attributed to cancer and external causes. Analysis of these mortality series revealed seasonal cycles for total cardiovascular mortality and diabetes mortality. Death from cancer and external causes also showed seasonal cycles. CV mortality and diabetes mortality peaked at the beginning of the third trimester of the year and were lowest during the first trimester. For the month of July, the CV mortality seasonal index showed a score of 108, and an average number of CV deaths of 364. The lowest seasonal index score for CV mortality was 87 in February, with an average number of CV deaths of 296. The cycles observed for cancer and deaths from external causes did not match the cycles observed for CV diseases and diabetes. We conclude that there is a seasonal pattern of CV mortality in Panama. The drivers of these cyclical changes of CV mortality have not yet been identified, but we are evaluating the relationship of acute respiratory illnesses, population activity patterns and weather changes to these seasonal mortality variations.

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The importance of beech forests as reservoirs of moth diversity in Mediterranean Basin (Lepidoptera)

Fragmenta Entomologica ◽

10.4081/fe.2018.294 ◽

2018 ◽

Vol 50 (2) ◽

pp. 161-170 ◽

Cited By ~ 2

Author(s):

Marco Infusino ◽

Stefano Scalercio

Keyword(s):

Community Structure ◽

Mediterranean Basin ◽

Beech Forests ◽

Number Of Species ◽

Maturation Stages ◽

Genetic Level ◽

European Distribution ◽

Successional Stages ◽

The Difference ◽

Almost All

Study analyzes the macrolepidoptera assemblages in beech woodlands of the Orsomarso Mountains (Pollino National Park, Southern Italy) to assess the role of beech forests in preserving diversity in Mediterranean Basin. Research was run between 2015 and 2016 in 15 stands representative of the main successional stages of forest maturation, placed between 990 and 1,475 meters of elevation. Monthlybased sampling was performed using UV-LED light traps. A total of 33,957 individuals belonging to 410 species was collected. The community is rich and the most abundant and characteristic species (Eilema lurideola, Operophtera fagata, Campaea margaritata) are almost all trophically linked to broadleaves or lichens. The community structure appears fairly constant and recognizable in all stands over the two years of sampling. Young beech forests hosted the greatest number of species compared to other forest maturation stages, though the difference is small. The greatest differences in the community structure are found in the clearings, where generalist and/or related to the herbaceous layer species are mostly represented. Biogeographically widely distributed species prevail, 87% of them having European or Asian-European distribution. There are a number of species of faunistic interest, among which Perizoma juracolaria, Chelis maculosa, Tiliacea citrago, Poecilocampa populi, Triphosa dubitata, Sideridis reticulata, Nebula senectaria, including 13 Italian endemics such as Coenotephria antonii. Populations of many species show significant genetic diversities compared to other European populations. The Orsomarso Mountains beech forests represent an important biodiversity reservoir, even at the genetic level, and show a good degree of naturalness.

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The annual cycle of the White-ruffed ManakinCorapipo leucorrhoa, a tropical frugivorous altitudinal migrant, and its food plants

Bird Conservation International ◽

10.1017/s0959270900002732 ◽

1994 ◽

Vol 4 (2-3) ◽

pp. 143-160 ◽

Cited By ~ 29

Author(s):

Loreta Rosselli

Keyword(s):

Breeding Season ◽

Annual Variation ◽

Subcutaneous Fat ◽

Food Plants ◽

Forest Site ◽

Fruit Species ◽

Altitudinal Migration ◽

Tentative Evidence ◽

Moult Period ◽

Almost All

SummaryFrugivorous White-ruffed ManakinsCorapipo leucorrhoa(Pipridae) showed pro nounced seasonal emigration from a pre-montane wet forest site (550 m) on the Atlantic slope of Costa Rica. “Resident” breeders left the area between August and October, and returned between February and April, at the onset of the breeding season. Female patterns differed from those of males primarily in later departure (October) and later return (April). I documented 57 fruit species in the diet at this locality and monitored phenology for 43 of those species, many of which were understorey members of the Melastomataceae. The emigration did not coincide with a period of local fruit shortage (relative to abundance at the same locality in other months), but the relative abundance and species composition of fruit resources in the areas to which the manakins migrated remains unknown. However, peak resources did coincide with the period in which recent fledglings would be commonest and the period during which most individuals were moulting prior ot emigration. Resources were lowest from November, when residents were absent, untilJune, well into the breeding season. Tentative evidence suggests considerable annual variation, possibly owing to differences in the timing of the rainy season. Individuals captured during the period when almost all “resident” breeders were absent (November) appeared to be transients, and were rarely recaptured. Weights differed between sexes, with females (χ = 12.5 ± 1.0) significantly heavier than males (χ = 11.1 ± 0.8). Males were lightest during the breeding season, intermediate in weight during the moulting period, and both sexes were heaviest during the migration period, when they accumulated subcutaneous fat. Females were lightest during the moult period, at which time many may also have dependent fledglings. Many other frugivores and nectarivores may engage in similar altitudinal migrations. Even where altitudinal migration is not possible, birds might migrate to other habitats with different fruit resources or phenologies. The design of nature reserves should accommodate the possibility of significant altitudinal (or cross-habitat) migration for many species of frugivores and nectarivores.

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