coral ecosystems are some of the key habitats found in Singapore. Singapore is a city-state with a land area of about 710 km. It is one of the most densely populated countries in the world and yet‚ harbours rich native biodiversity‚ both terrestrial and marine. The wealth of biodiversity can be attributed to Singapore’s strategic location within the Malesian region. Favourable climatic conditions also help to account for the rich diversity of flora and fauna found in its varied ecosystems. The
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Introduction Forests are the dominant terrestrial ecosystem on Earth‚ and are distributed across the globe. Forests account for 75% of the gross primary productivity of the Earth’s biosphere‚ and contain 80% of the Earth’s plant biomass. (Yude‚ 2013). Human society and forests influence each other in both positive and negative ways. (Vogt‚ 2007). Forests provide ecosystem services to humans‚ but also impose economic‚ environmental‚ health and aesthetic costs. Human interactions with the forest‚ including
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ecologically and economically important as a natural renewable resource (Field 1995). They are considered productive ecosystems and important source and sink of carbon within the tropical coastal zone (Twilley et al. 1992; Ong 1993; Alongi 1998). The ecological processes in mangroves (productivity‚ nutrient cycling‚ litter dynamics‚ succession and sedimentation) make them most productive ecosystems in the coastal region (Clough & Attiwill 1982; Hutchings & Saenger 1987; Aksornkoae 1993). The uses and values
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Yveneka Lestin Cobble Hill 9th December 1‚ 2014 Topic: Deforestation Argumentative Essay Deforestation is the process of cutting down trees and plants in an area‚ mainly in rain forest. Rain forest are home to 50 percent of its species‚ maintain the water cycle and protect against flood‚ drought‚ and erosion. Trees plays a significant role in the environment and deforestation is harmful to humans and our environment. Deforestation poses a threat to the biological
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Analyse the human impacts affecting the nature and rate of change of two ecosystems at risk. All ecosystems are placed under levels of stress that must be withstood or overcome in the form of evolution in order to adapt and survive. These attributes determine the resilience and vulnerability of each and every ecosystem. These forms of stress fall under two categories; natural and human induced. In regards to natural stress‚ the term gradual is used as it happens at a slower rate and lesser magnitude
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Unit 4 Ecosystems Background Introduction The abundance of a species and species diversity affect how natural resources are processed within an ecosystem. This pattern of processing contributes to functional and compositional characteristics of an ecosystem. But many ecosystems around the world are currently experiencing significant changes in species composition‚ abundance‚ and diversity due to the influence of human activity. These changes have‚ more often than not‚ led to a reduction in species
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lives. War is like forest fires; you cannot prevent forest fires. Any old advertisement showing ‘Smokey the bear’ was really a flaw in human thinking long ago. Forest fires are a natural thing that has taken place for millions of years‚ and so is war. Thinking you can prevent war is somewhat ignorant. If you try to prevent forest fires you end up having a massive one rage out of control‚ dominating everything in its wake. However‚ small forest fires are good for the ecosystem and renew life‚ the
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of the estuary. Flora: Mangroves are a group of salt tolerant plant species‚ which occur in the tropical and subtropical initial estuary regions. Mangroves constitute a dynamic ecosystem with a complex association of both floral and faunal species of terrestrial and aquatic systems and the vegetation in this forest is of evergreen type. Mangroves provide different kind of niches for a variety of animal populations required. The crowns of trees including trunk‚ branches‚ leaves‚ flowers and
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the tropical grassland ecosystem. However‚ when based in the indices on Diversity‚ Similarity and Dominance in the tropical grassland and tropical rainforest data‚ the Simpson Indices favor the data for the tropical rainforest as more diverse than the tropical grassland. The Simpson Indices‚ as defined in Cuevas et. al (2012)‚ is based on dominance and as the number of dominant species in a community are few‚ the species has low diversity. The tropical rainforest ecosystem showed a higher index of
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Name Class Date Ecosystems and Communities Chapter Test A (removed questions on Freshwater and Marine Ecosystems) Multiple Choice Write the letter that best answers the question or completes the statement on the line provided. _____ 1. How does an area’s weather differ from the area’s climate? a. Weather involves temperature and preciapitation and climate involves only temperature. b. An area’s weather depends on where it is located on Earth and the area’s climate does
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