Biodiversity and evolution pdf

Explains how modern organisms have developed from ancient. Biodiversity has a key role in maintaining healthy ecosystems and thereby sustaining ecosystem services to the evergrowing human population. Biodiversity is a relatively recent term in science, only coming into common usage in the 1980s. Biodiversity and evolution printerfriendly version pdf version since then, it has become one of the most important concepts in environmental science the study of the structures and processes of the natural world and the impact human beings have on them. Excess units will be applied to subsequent concentration electives. Stephen j gould and niles eldredge suggested that evolution moves according to punctuated equilibriums. Origin and evolution of biodiversity agropolis international. Reduction in biodiversity can affect decomposition rates, vegetation biomass production and, in the marine environment, affect fish stocks.

Ecology, evolution, and biodiversity major requirements. Classification of biodiversity ppt and pdf easy biology. Access study documents, get answers to your study questions, and connect with real tutors for biol 114. Biodiversity found on earth today consists of many millions of distinct biological species, the product of four billion years of evolution. This is a report of the econference entitled evolution and biodiversity. She explains natural selection, speciation and touches on genetic engineering and artifi.

Learn vocabulary, terms, and more with flashcards, games, and other study tools. Details of genetic diversity, species diversity and ecosystem diversity are given. Another important point in the evolution of biodiversity is the debate about the gradualism against punctuated equilibrium. Learn quiz chapter 4 biodiversity evolution with free interactive flashcards. Ecology, evolution, biodiversity, and conservation. Posted in ecology, ecology ppt, environmental science and tagged alpha diversity, beta diversity and gamma diversity, biodiversity ppt, classification of biodiversity, ecology ppt, uses of biodiversity. Biodiversity and evolution includes chapters devoted to the evolution and. Chapter 3 biodiversity and evolution 37 biodiversity is further defined by species richness and species abundance. Biodiversity underpins ecosystem function and the provision ofecosystem services. Species richness refers to the total number of different species present in a given area, while species abundance refers to the number of individuals of a given species that is present in that area.

The number of tigers has plunged by 97% in the last century. Queen nerdling discusses evolution and how it leads to biodiveristy. Choose from 500 different sets of quiz chapter 4 biodiversity evolution flashcards on quizlet. Multiple facets of biodiversity drive the diversity. This department is focused on understanding the effects of global. An overview of plant biodiversity is provided in this chapter. Module 3 biodiversity and evolution fossil natural. Biodiversity science for humans and nature 8 origin and evolution of biodiversity the diversity department addresses the need to compare evolutionary and ecological processes evolutionary ecology to gain insight into mechanisms underlying biodiversity dynamics. The origin of life has not been established by science, however, some evidence suggests that life may already have been wellestablished only a few hundred million years after the formation of the earth. Module 3 biodiversity and evolution free download as powerpoint presentation. It means that there is nothing gradual in the pattern of evolution and speciation, but species evolve in a jump. Biodiversity is the variety of different forms of life on earth, including the different plants, animals, microorganisms, the genes they contain and the ecosystem they form.

Pdf on apr 27, 1992, serge legendre and others published biodiversity and evolution. To get an idea of the range of ecosystem services that we use daily, think of how much energy and time it would cost to make mars or some other earthlike planet hospitable for human life, for example, in terms of atmosphere regulation, freshwater. Evolution in biodiversity policy current gaps and future needs core. It is the variety of earths species, the genes they contain, the ecosystems in which they live. Biodiversity loss therefore threatens the provision of goods and services provided by ecosystems. Analysing data from 39 grassland biodiversity experiments, the authors uncover the direct and indirect contributions to ecosystem stability of taxonomic, phylogenetic and functional trait diversity. The number of animals living on the earth has plunged by half since 1970. We started by considering the role of evolution in biodiversity from a.