such as; kelp‚ abalone‚ crustaceans‚ urchins‚ harbor seals‚ and also sea otters. Kelp forests are important to today’s oceans‚ and they depend on the organisms that live within them‚ especially the sea otter. A keystone species is a species whose presence contributes to the diversity of life in its ecosystem. If a keystone species to an ecosystem were to go extinct‚ their ecosystem would suffer severally. In the case of the kelp forest the major keystone species is the sea otter. The reason that
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sources‚ including terrestrial‚ marine‚ and other aquatic ecosystems and the ecological complexes of which they are part ; this includes diversity within species‚ between species and of ecosystems’ (Hambler‚ C.‚ 2004‚ 11). Within planet earth today Biodiversity forms the foundation for the vast array of ecosystem services that critically contribute to human well being. It is as important in human managed ecosystems as well as natural ecosystems (Hambler‚ C.‚ 2004‚ 15). To begin to understand Biodiversity
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BIOLOGICAL DIVERSITY Definition • Full variety of life on Earth • The study of the processes that create and maintain variation • Variety of individuals within populations • Diversity of species within communities • Range of ecological roles within ecosystems • Genetic diversity • Species diversity • Diversity of environment & habitat Three Major Areas Three Levels LEVELS OF BIODIVERSITY Genetic diversity • Variety of genetic information in all individuals ( plants‚ animals and microorganisms)
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control - web of life Where do plants grow? -natural plant systems -human cultivated systems Natural plant systems -areas where plants grow naturally -ecosystems; many different types occur on Earth -natural systems are beneficial for humans (ecosystem services) CULTIVATED PLANT SYSTEMS -human-made‚ controlled ecosystems -agriculture agronomy; grains‚ agronomic crops‚ forage horticulture; fruit/vegetables & ornamental crops -landscaping‚ vineyards hydrophobic‚ botanic garden
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Declining Biodiversity Deanna Garrett ENV495 Jeanne Lambert May 6‚ 2013 Declining Biodiversity Biodiversity is important in ecosystems because every life form works together in order for them to function. When these ecosystems are disrupted or altered‚ or even lacks biodiversity‚ it poses major threats to all the life forms in it‚ whether it happens quickly or over a long period of time. These threats include atmospheric pollution‚ weather catastrophe‚ climate changes‚ or even man-made
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from the Greek oikos meaning "household" and logos meaning "study"; hence‚ the "study of the household of nature". E. P. Odum defined ecology as‚ “the study of the structure and function of nature‚ which includes the living world”. He referred to ecosystem as the basic fundamental unit of ecology. ecological science‚ is the scientific study of the distribution and abundance of
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Anything which we eat to live is called food. Food contains energy. The food (or energy) can be transferred from one organism to the other through food chains. The starting point of a food chain is a category of organisms called producers. Producers are‚ in fact‚ plants. So‚ we can say that all the food chains begin with a green plant (or grass) which is the original source of all food. Let us take an example to understand the meaning of food chain. Suppose there is a field having a lot of green
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During the post-classical era (500 CE – 1000 CE)‚ multiple kingdoms developed throughout the Indian Ocean Basin where societal practices of India had a huge impact‚ causing cross-cultural shifts in economical practices‚ religious views‚ and trade‚ resulting in increased population and agricultural growth. India‚ China‚ and East Africa were the three main societies that were impacted. The development of economics was influenced greatly. Most other kingdoms created a money system using coins
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certain to continue until you reach the clearly marked “End of Exam” box. REQUIRED QUESTIONS: Content Points Earned Points Available 1. Describe the hydrologic cycle in detail. How does the hydrologic cycle help make oceans more acidic? What role does pH play in the health of ocean ecosystems? 4.0 Your Response to Q1: The bodies of water on Earth through evaporation enter the atmosphere. Vaporization also happens when plants and animals add water through transpiration. Water vapors gather in the atmosphere
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chemicals get into the atmosphere they will harm any environment. There are several environmental effects of acid rain. Acid rain can harm an ecosystem very little or very badly. One effect is runoff from the acidic rain which can flow into streams‚ lakes‚ and other bodies of water. This can cause the water to be more acidic. In many sensitive water ecosystems this can kill or harm several fish and other organisms. The acids in the water from the runoff can also reduce nutrient levels. This will also
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