Energy through ecosystems

Ebook "Principles of terrestrial ecosystem ecology (Second edition)" regards living organisms, including people, and the elements of their environment as components of a single integrated system. The comprehensive coverage in this textbook examines the central processes at work in terrestrial ecosystems, including their freshwater components. It traces the flow of energy, water, carbon, and nutrients from their abiotic origins to their cycles through plants, animals, and decomposer organisms.

536p tachieuhoa 28-01-2024 5 2   Download

Testate amoebae are a group of rhizopoda, which is an important group of protist. They are observed in very different environments from soil to rivers, lakes, ponds, marsh, and even in the sea. They play an important role in the transfer of matter and energy through the ecosystem because they are component of “microbial loop”.

8p vipalau2711 04-01-2021 9 1   Download

Overview of chapter 3: What is ecology? the energy of life: laws of thermodynamics, photosynthesis and cellular respiration; flow of energy through ecosystems: producers, consumers and decomposers, ecological pyramids, ecosystem productivity.

38p shiwo_ding5 22-05-2019 22 2   Download

Earth's ecosystems continue to exist because they are sustainable. Two fundamental characteristics are crucial to sustainability. First, ecosystems' energy source, the Sun, is non-depletable and non-polluting. Second, there is efficient recycling of nutrients and other chemicals through organisms and through geological and chemical processes that result in no waste accumulation in ecosystems. This chapter provide knowledge of ecosystems: How they work.

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Water contamination weakens or destroys natural ecosystems that support human health, food production, and biodiversity. Studies have estimated that the value of ecosystem services is double the gross national product of the global economy, and the role of freshwater ecosystems in purifying water and assimilating wastes has been valued at US$ 400 billion (2008$) (Costanza et al. 1997). Freshwater ecosystems are among the most degraded on the planet, and have suffered proportionately greater species and habitat losses than terrestrial or marine ecosystems (Revenga et al. 2000).

196p saimatkhauroi 01-02-2013 46 8   Download

Hydraulics is a branch of scientific and engineering discipline that deals with the mechanical properties of fluids, mainly water. It is widely applied in many civil and environmental engineering systems (water resources management, flood defence, harbour and port, bridge, building, environment protection, hydropower, irrigation, ecosystem, etc). This is an introductory book on hydraulics and written for undergraduate students in civil and environmental engineering, environmental science and geography.

177p tuanloc_do 04-12-2012 69 5   Download

Current efforts to address climate change focus mainly on reducing emissions of greenhouse gases, mainly through cleaner energy strategies, and on attempting to reduce vulnerability of communities at risk by improving infrastructure to meet new energy and water needs. This report attempts to set out a compelling argument for including ecosystem‐based approaches to mitigation and adaptation as a third and essential pillar in national strategies to address climate change. The report is targeted at both Bank task teams and country clients.

106p yeurauxanh88 01-10-2012 49 4   Download

Alberta is proving that environmental protection and economic development can happen at the same time. The province has shown leadership through legislation and policies involving land reclamation, water controls, air quality, and human and ecosystem health. In the oil sands, current production methods mean that more energy is needed to produce a barrel of oil than conventional oil. But the gap is closing. Technology continues to advance, reducing the energy and environmental impact of oil sands recovery. ...

90p yeurauxanh88 28-09-2012 61 5   Download

SECTION IV ECOSYSTEM LEVEL THE ECOSYSTEM LEVEL OF ORGANIZATION INTEGRATES species interactions and community structure with their responses to, and effects on, the abiotic environment. Interactions among organisms are the mechanisms governing energy and nutrient fluxes through ecosystems.

33p thegun16 29-11-2010 48 7   Download

Chapter 18 The Flux of Matter through Ecosystems 18.1 Introduction Chemical elements and compounds are vital for the processes of life. Living organisms expend energy to extract chemicals from their environment, they hold on to them and use them for a period, then lose them again.

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Chapter 17 The Flux of Energy through Ecosystems 17.1 Introduction All biological entities require matter for their construction and energy for their activities. This is true not only for individual organisms, but also for the populations and communities that they form in nature.

26p thegun16 29-11-2010 81 8   Download