Biogeochemical cycles

Ebook "Shipping and the environment: Improving environmental performance in marine transportation" focuses on the interaction between shipping and the natural environment and how shipping can strive to become more sustainable. Readers are guided in marine environmental awareness, environmental regulations and abatement technologies to assist in decisions on strategy, policy and investments.

434p giangdongdinh 28-05-2024 2 0   Download

Ebook "Molybdenum cofactors and their role in the evolution of metabolic pathways" explore and review the current knowledge regarding the role of molybdenum in the evolution of biological systems and their interaction with biogeochemical cycles. Special emphasis is placed on biological nitrogen fixation and the nitrogen element cycle. The origin and evolution of molybdenum cofactor biosynthetic pathways as well as the evolutionary significance of molybdenum containing enzymes appearance is analyzed.

79p tudohanhtau1006 29-03-2024 1 1   Download

Ebook "Remote sensing of biosphere functioning (Ecological studies, Volume 79)" will rely heavily on the emerging technology of remote sensing from airborne vehicles, particularly satellites. Satellites offer the potential of continuously viewing large seg­ ments of the earth's surface, thus documenting the changes that are occur­ ring. The task, however, is not only to document global change, which will be an enormous job, but also to understand the significance of these changes to the biosphere. Effects on the biosphere may cover all spatial scales from global to local.

321p duongthandue0501 28-02-2024 3 1   Download

Ebook "Modern biogeochemistry: Environmental risk assessment" quantitative ecological risk assessment is widely used in different contexts, however very often without an understanding of the natural mechanisms that drive the processes of environmental and human risk. Its application is often accompanied by high uncertainty about risk values. On the other hand, the sustainability of modern technoecosystems is known because of their natural biogeochemical cycling that has been transformed to various extents by anthropogenic studies.

446p tachieuhoa 28-01-2024 4 2   Download

Ebook "Tropical and sub-tropical reservoir limnology in China: Theory and practice" offers a first description of reservoir limnology in tropical and subtropical China; provides a window on China to all scientists interested in limnology and freshwater ecology; topics discussed are zooplankton, phytoplankton and zoobenthos communities, cyanobacteria, nutrient budget, sediments, biogeochemical cycling of mercury, fishery and eutrophication;...

372p lucchinguyen 28-12-2023 7 2   Download

Different types of land use, practices and management can alter biogeochemical cycling of a piece of land by the effect it produces on soil properties. The conversion of forest land to agricultural land and wastelands to forest land use have been in practice from primordial days due to land hunger and reclamation.

7p viporsche 28-10-2022 5 2   Download

Particulate organic carbon (POC) plays a vital role in the ocean carbon cycle and is related to many important ocean biogeochemical processes. This study investigates the annual and seasonal variability of POC and its relationship with sea surface temperature (SST), chlorophyll-a (Chl-a), and wind vector in the northern Bay of Bengal (BoB) of Bangladesh and validates satellite data with in situ measurement data.;

11p thebadguys 15-01-2022 17 0   Download

Microbes are main drivers of biogeochemical cycles in oceans and lakes. Although the genome is a foundation for understanding the metabolism, ecology and evolution of an organism, few bacterioplankton genomes have been sequenced, partly due to difficulties in cultivating them.

18p viaristotle 29-01-2022 11 0   Download

The geochemical behavior of Pb in terrestrial and coastal water systems significantly influences Pb biogeochemical cycling and pollutant exchange at the land-sea continuum. An ideal case study of Pb environmental geochemistry is Galveston Bay, an anthropogenic estuary exposed to industrial runoff, wastewater and shipping vessel spills but also fed by natural rivers.

10p thebadguys 15-01-2022 13 0   Download

Many cyanobacteria are capable of fixing atmospheric nitrogen, playing a crucial role in biogeochemical cycling. Little is known about freshwater unicellular cyanobacteria Synechococcus spp. at the genomic level, despite being recognised of considerable ecological importance in aquatic ecosystems.

12p vibeauty 23-10-2021 13 0   Download

Marine bacteriophages play key roles in the community structure of microorganisms, biogeochemical cycles, and the mediation of genetic diversity through horizontal gene transfer. Recently, traditional isolation methods, complemented by high-throughput sequencing metagenomics technology, have greatly increased our understanding of the diversity of bacteriophages. Oceanospirillum, within the order Oceanospirillales, are important symbiotic marine bacteria associated with hydrocarbon degradation and algal blooms, especially in polar regions.

16p vitzuyu2711 29-09-2021 6 1   Download

The species has been studied intensively with respect to its interaction with co-occurring plants as well as microbes being involved in major biogeochemical cycles. J. effusus has biotechnological value as component of Constructed Wetlands where the plant has been employed in phytoremediation of contaminated water. Its genome has not been sequenced.

12p visilicon2711 20-08-2021 8 0   Download

Viruses are the most abundant biological entities on earth and play import roles in marine biogeochemical cycles. Here, viral communities in the surface water of the East China Sea (ECS) were collected from three representative regions of Yangshan Harbor (YSH), Gouqi Island (GQI), and the Yangtze River Estuary (YRE) and explored primarily through epifluorescence microscopy (EM), transmission electron microscopy (TEM), and metagenomics analysis.

15p vijeeni2711 24-07-2021 7 0   Download

Forest ecosystems are among the most complex and heterogeneous terrestrial environments. Such heterogeneity is probably due to limited anthropogenic intervention and the perennial status of the primary producers especially forest trees. Soil microorganisms (e.g., bacteria, fungi and actinomycetes etc.) play a vital role in biogeochemical cycling in forest soils maintaining life on earth, fixing gases and breaking down of dead plant and animal matter into simpler substances that are used at the beginning of the food chain.

16p kethamoi5 03-06-2020 8 0   Download

In Nigeria, crude oil pollution challenge of the terrestrial environment is very prevalent. Soil fungi play very important role in the degradation of organic materials, as well as agents of the biogeochemical cycles. Fungi have an advantage over bacteria due to their production of hyphae that can penetrate contaminated soil. The aim of this study was to evaluate the bioremediation potential of two fungal species: Aspergillus clavatus and Pichia spp.

12p kequaidan2 11-12-2019 15 0   Download

The relentlessly increase of atmospheric carbon dioxide (CO2) concentration due to release from different sources leads to global warming and climate change which are a cause for great concern demanding in-depth research on CO2 emission from soil under different forest cover. Forest cover can reverse the increasing CO2 in the atmosphere, thus, contributes to mitigate climate change. Forest stored about half of the organic carbon (C) contained in terrestrial ecosystems. The role of forests has a great impact on the global biogeochemical cycles and in particular, the carbon cycle.

8p cothumenhmong1 11-12-2019 21 0   Download

Sustainability of soil system and crop productivity is the greatest challenges in the twentyfirst century. The growing population pressurized modern agricultural practices to enhance food production. Green-revolution derived modern agriculture is characterized by the use of high-yielding crop varieties, inappropriate application of synthetic fertilizers and intensive water and energy resources utilization.

14p chauchaungayxua1 04-12-2019 31 1   Download

Diatoms represent an important class of aquatic phototrophs. They are not only one of the major contributors to global carbon fixation, but they also play a key role in the biogeochemical cycling of silica.

8p sony2711 01-02-2019 11 1   Download

The loss of agricultural land due to the development of other land uses has increasingly become an issue of local, regional, and national concern in Turkey.

10p vimb123 12-01-2019 23 1   Download

Lecture Microbiology - Chapter 25: Environmental microbiology. This chapter presents the following content: Energy flow, biogeochemical cycles – water, biogeochemical cycles – carbon, biogeochemical cycles – nitrogen, nitrogen fixing bacteria,...

13p nomoney6 04-03-2017 31 4   Download