Origin and evolution of biodiversity agropolis international. 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. Classification of biodiversity ppt and pdf easy biology. Another important point in the evolution of biodiversity is the debate about the gradualism against punctuated equilibrium. We started by considering the role of evolution in biodiversity from a. Ecology, evolution, biodiversity, and conservation. 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. Queen nerdling discusses evolution and how it leads to biodiveristy. Pdf on apr 27, 1992, serge legendre and others published biodiversity and evolution. Learn quiz chapter 4 biodiversity evolution with free interactive flashcards.
Biodiversity and evolution includes chapters devoted to the evolution and. Module 3 biodiversity and evolution free download as powerpoint presentation. Biodiversity loss therefore threatens the provision of goods and services provided by ecosystems. 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. Biodiversity is a relatively recent term in science, only coming into common usage in the 1980s. 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. 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. Reduction in biodiversity can affect decomposition rates, vegetation biomass production and, in the marine environment, affect fish stocks.
Module 3 biodiversity and evolution fossil natural. Access study documents, get answers to your study questions, and connect with real tutors for biol 114. 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. Details of genetic diversity, species diversity and ecosystem diversity are given. There is grandeur to this view of life that, whilst this planet has gone cycling on endless forms most beautiful and most wonderful have been, and are being, evolved. Stephen j gould and niles eldredge suggested that evolution moves according to punctuated equilibriums. Biodiversity underpins ecosystem function and the provision ofecosystem services. 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. Excess units will be applied to subsequent concentration electives.
The number of animals living on the earth has plunged by half since 1970. 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. It means that there is nothing gradual in the pattern of evolution and speciation, but species evolve in a jump. Biodiversity has a key role in maintaining healthy ecosystems and thereby sustaining ecosystem services to the evergrowing human population. The number of tigers has plunged by 97% in the last century. She explains natural selection, speciation and touches on genetic engineering and artifi. 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. Chapter 3 biodiversity and evolution 37 biodiversity is further defined by species richness and species abundance. Biodiversity found on earth today consists of many millions of distinct biological species, the product of four billion years of evolution.
Learn vocabulary, terms, and more with flashcards, games, and other study tools. Choose from 500 different sets of quiz chapter 4 biodiversity evolution flashcards on quizlet. This department is focused on understanding the effects of global. Multiple facets of biodiversity drive the diversity. Ecology, evolution, and biodiversity major requirements.