scholarly journals Assinatura Energética dos Manguezais no Domínio Costeiro Brasileiro

2021 ◽  
Vol 14 (4) ◽  
pp. 2286-2303
Author(s):  
Janaina Barbosa da Silva ◽  
Maria Fernanda Abrantes Torres

This research aimed to detail, from a systemic view, the mangrove ecosystem on the Brazil scale, based on the Units scale, and on the ecosystem definitions. The multiplicity of mangrove phytophysiognomies along the Brazilian coast requires specific knowledge about the conditioning agents that explain such configurations, so we sought to detail the energy signature of the Brazilian coast to better understand the dispersion, diversity and zoning of the mangrove vegetation. The database was secondary, collected in national and international articles, theses and dissertations and official websites. The results are: 1- Nine Environmental Units for the Brazilian Coastal Domain were identified, based on their general characteristics, where a previous study established eight Units; 2- The flowcharts for each Unit were prepared based on subsidiary energies, that is, average annual sunshine; annual average temperature; average annual precipitation; nutrients; average annual flow; average tidal range, thus resulting in an environmental characterization for each Unit. 3- In response to the Energy Signature of each Unit, it was possible to identify patterns of dispersion / occurrence of mangrove species with occurrence. 4- For Brazil, the most diverse genus is Rhizophora, which occurs throughout the Brazilian coast. However, only the Rhizophora mangle is present from the mouth of the Oiapoque-AM to Santa Catarina. R. racemosa and R. harrisonii are dispersed from the North Region with its southern limit in the Delta of the river Parnaíba-PI in the Northeast of Brazil.

2021 ◽  
Vol 16 (1) ◽  
pp. 193-200
Author(s):  
Sohrab Ghaedi ◽  

Reducing the consumption of fossil fuels using underground spaces has a significant impact on the economic, social and environmental dimensions of sustainable development. In this study, the soil layers temperature and thermal comfort in these layers were investigated to make the underground spaces in Khuzestan province. The average summer temperature in the central of Province is about 38°C, which is far from the comfort of the temperature. The surface annual temperature fluctuation in the Province varies from 23.5 in the north of the province to 28.5 °C in the southeast. Investigating the temperature fluctuation in the soil layers shows that it decreases with increasing depth, so that at a depth of 10 meters, the temperature fluctuation is approximately zero and it is equal to the annual average temperature. Therefore to 10 m depth, temperature fluctuation decreases by increasing the depth. The use of underground spaces in the Province can be taken in coping with heat and extreme sunlight, reducing energy and controlling dust and has positive effect on economic, social and environmental dimensions of sustainable development.


Polar Record ◽  
1979 ◽  
Vol 19 (123) ◽  
pp. 597-604
Author(s):  
Sixten S. R. Haraldson

Independent of latitude, scattered populations all over the world need specially designed health and social services with much higher per capita costs than in densely populated parts of the world. This is particularly true of the Arctic region with its harsh environmental conditions and constraints apply. Indeed, it is even more important to establish the nature of numerical highly individual native cultures. In spite of its northerly position, Svalbard (77–80°N) has a relatively mild climate which offers an environment less inhospitable than might be expected at this latitude. The climate, especially on the main island, Spitsbergen, is influenced by an extreme tail of the North Atlantic Drift which keeps the waters of the west and north coasts open for half the year. Extreme Arctic temperatures are rare. Spitsbergen's temperature fluctuates by about 20°C, whereas in castern Siberia the range can be three times as great. The annual average temperature on the west coast is −5°C, seldom falling below −30°C. July is usually around +5°C with an occasional maximum of +20°C. Therefore, the health problems often associated with extremely cold climates are not common in Svalbard.


2007 ◽  
Vol 7 (1) ◽  
pp. 101-104 ◽  
Author(s):  
Fernanda Bernardo Anacreto Gomes de Barros ◽  
Márcia Salustiano de Castro ◽  
Ana Cristina Teixeira Bonecker

Fistulariidae contains the single genus, Fistularia, with four species. Two of these species are recorded from Brazil: Fistularia petimba and F. tabacaria. This study describes larvae of these two species of Fistularia, recording their distribution along the southeastern Brazilian coast, which is limited in the north by Real River (12° S) and in the south by São Tomé Cape (22° S). Samples were collected using a bongo net with mesh apertures of 330 and 500 µm during three oceanographic cruises conducted on spring/98 (Central III), winter/99 (Bahia 1) and autumn/00 (Central IV). The net was towed obliquely and the maximum depth was 200 m. Larvae of F. petimba were the most abundant and most widely distributed within the study area, including the seamounts of the Vitória-Trindade Ridge. Larvae of F. tabacaria were recorded only between 14° S and 21° S.


1978 ◽  
Vol 26 (3) ◽  
pp. 351 ◽  
Author(s):  
KC Hodgkinson ◽  
JA Quinn

Seedlings and older plants of five populations of Danthonia caespitosa from south-eastern Australia were grown in controlled environments and in a transplant garden to determine the effect of day length, temperature, and vernalization of floral initiation and inflorescence development. The populations were selected from widely separated sites which spanned the latitudinal range (31-42°S.) for the species and extended from a hot, semiarid environment in the north to a relatively cool and moist temperature environment in the south. Examination of herbarium specimens indicated that seed set could occur as early as mid September at the northern limit for the species and not before mid January at the southern limit (Tasmania). In a uniform transplant garden located at Deniliquin (latitude 35° 23′S.) plants from the northern site reached anthesis 4 weeks earlier than plants from southern sites. Controlled environment experiments revealed that D. caespitosa is a long-day plant. Northern populations required a 9 . 5 hr day length or longer for floral induction compared with 11 hr or longer for southern populations. The number of days in inductive conditions (outside, day length 13.5 hr) required for floral initiation was 5-7 for the three most northern populations and 21-25 days for the two southern populations. Inflorescence development (initiation to flag leaf stage) was considerably slower in southern populations. All but the most northern population responded to vernalization. Flowering was earlier in temperatures that were optimal for plant growth. At high temperatures (36/31°C day/night) flowering was not significantly delayed for the three most northern populations, but was for the two southern populations, and florets contained caryopses in only the three northern populations. These results suggest that in cool and moist temperate habitats reproduction of this species is programmed by day length and temperature effects on floral initiation and development to coincide with a predictable growing season, whereas in hot semiarid habitats this control is relaxed, which permits opportunistic reproduction whenever soil moisture and temperature permit growth.


2018 ◽  
Vol 2018 ◽  
pp. 1-17 ◽  
Author(s):  
Lingling Shen ◽  
Li Lu ◽  
Tianjie Hu ◽  
Runsheng Lin ◽  
Ji Wang ◽  
...  

Homogeneity of climate data is the basis for quantitative assessment of climate change. By using the MASH method, this work examined and corrected the homogeneity of the daily data including average, minimum, and maximum temperature and precipitation during 1978–2015 from 404/397 national meteorological stations in North China. Based on the meteorological station metadata, the results are analyzed and the differences before and after homogenization are compared. The results show that breakpoints are present pervasively in these temperature data. Most of them appeared after 2000. The stations with a host of breakpoints are mainly located in Beijing, Tianjin, and Hebei Province, where meteorological stations are densely distributed. The numbers of breakpoints in the daily precipitation series in North China during 1978–2015 also culminated in 2000. The reason for these breakpoints, called inhomogeneity, may be the large-scale replacement of meteorological instruments after 2000. After correction by the MASH method, the annual average temperature and minimum temperature decrease by 0.04°C and 0.06°C, respectively, while the maximum temperature increases by 0.01°C. The annual precipitation declines by 0.96 mm. The overall trends of temperature change before and after the correction are largely consistent, while the homogeneity of individual stations is significantly improved. Besides, due to the correction, the majority series of the precipitation are reduced and the correction amplitude is relatively large. During 1978–2015, the temperature in North China shows a rise trend, while the precipitation tends to decrease.


2012 ◽  
Vol 616-618 ◽  
pp. 1496-1499
Author(s):  
Guo Wei Xu ◽  
Xin Tian Yuan ◽  
Shu Ling Huang ◽  
Yang Gao

Selecting 50 years temperature observation data from1959 to 2008 and using statistical analysis, this paper revealed the characteristics of temperature variation in Hefei city. The results show that in past 50 years, the annual average temperature in Hefei city greatly increased, tendency rate of temperature change was 0.246°C/10 a, especially after 1993, the temperature increased significantly; the temperature in four seasons all increased somewhat, warming was most prominent in spring. The most significant temperature increase was in spring, winter following behind, temperature increase in autumn was not obvious, and the average summer temperature increased the most unobvious.


1967 ◽  
Vol 16 (1) ◽  
pp. 13-22 ◽  
Author(s):  
Ellen F. Luedemann

In February-March 1963, during the Equalant Operation for the ICITA program, 476 drift-bottles were released at the equatorial waters off the northern Brazilian coast (01ºS to 09ºN and 043ºW to 053ºW). Thirty-five, bottles were recovered (7,4%). Those were classed in five groups according to their different velocity ranges and areas of recovery (Trinidad Island; Lesser Antilles; Caribbean and Florida area; north Brazil; northeastern Brazil). The recoveries of bottles released within 300 nm off the northern and northeastern coast of Brazil confirmed a strong current along the north and northeast coast in northwestern direction (South Equatorial Current and branches). In late February-early March the bottles showed maximum velocities of this current (3,6 knots). The region off the northern coast of Brazil, between 05ºN and 09ºN up to 050ºW seems to have been under the influence of an eastward component of the surface current in this same period, while at late March this influence appears to have been weaker. In the region from Trinidad Island to Yucatan Peninsula the current seems to be stronger on the northeastern side of the Caribbean Sea.


2005 ◽  
Vol 2 (2) ◽  
pp. 115-137 ◽  
Author(s):  
François Taillefer

The littoral morphology of the Bermudas is an erosional morphology in limestones, the main processes being mechanical action and solution. The temperatures, in January and February, of the waters washing the Bermudas, are low enough to prevent the growing of true coral reefs. Therefore, it is not the morphology of a coral reef. The predominance of wave-cut cliffs is the most striking feature, despite the low and gently rolling topography. There are, however, other types of coasts on the islands, the mangrove being found on many sheltered shores. The writer thus opposes the sheltered shores of the sounds to the ones exposed on the southcoast, while the shores of the north and north-east coasts belong to an intermediate type. The steplike arrangement of the coastal forms of solution of the Bermudas limestones is primarily linked to the amount of the tidal range. These features are similar to those described on the shores of the warm seas, where the tide is negligible or weak. The Bermudas occupy an intermediate position between the regions where reefs are built by corals, and those, to the north, where solution, helped by other processes, occurs without compensation.


Author(s):  
Muhammad Ardiansyah ◽  
Danial Danial ◽  
Muhammad Jamal Alwi

Strategy For Development of Untia Archipelago Fishing Area Based on Ecotourism In The City of Makassar This research was conducted from August 5, 2019 to September 5, 2019, aimed at identifying the potential of ecotourism in the Untia VAT Area mangrove ecosystem, analyzing the suitability of the Untia VAT Area mangrove ecotourism, and determining the strategy of developing mangrove ecotourism in the Untia VAT Area. Data collection was carried out through field surveys and interviews using questionnaires. Data analysis uses area suitability analysis for coastal tourism, mangrove tourism category and SWOT analysis. The results of this study indicate that the potential for ecotourism in the mangrove ecosystem Untia VAT Area is a mangrove area included in the appropriate category to be used as an ecotourism area. The strategy of developing mangrove ecotourism in the Untia PPN Region is to increase human resources (HR), planting abrasion-resistant mangrove species in a sustainable manner, procurement of facilities and infrastructure to support tourism activities, and good cooperation among policy makers.


2000 ◽  
Vol 43 (1) ◽  
pp. 71-79 ◽  
Author(s):  
Marcos Silveira Wrege ◽  
Paulo Henrique Caramori ◽  
Sergio Luiz Gonçalves ◽  
Wilson Paes de Almeida ◽  
Celso Jamil Marur ◽  
...  

Cotton is cultivated in the North and West of Parana State, southern Brazil, under conditions of climatic risk variable in space and time. Risks of temperature below 15ºC at the establishment period, daily average temperature below 20ºC at the stage of cotton boll opening, and soil water deficit for both plant establishment and flowering periods, were estimated to identify homogeneous zones with sowing periods of lower climatic risk. The time interval with adequate temperature, associated with minimum risks of the other factors and yield data from field experiments allowed the identification of seven distinct zones, with best sowing periods ranging from September 20 to November 20. Official credit to the farmers is conditioned by the Central Bank of Brazil upon following these recommendation of best sowing periods for each municipality.


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