Urbanization and Population Change
Total Page:16
File Type:pdf, Size:1020Kb
Load more
Recommended publications
-
Effects of Eutrophication on Stream Ecosystems
EFFECTS OF EUTROPHICATION ON STREAM ECOSYSTEMS Lei Zheng, PhD and Michael J. Paul, PhD Tetra Tech, Inc. Abstract This paper describes the effects of nutrient enrichment on the structure and function of stream ecosystems. It starts with the currently well documented direct effects of nutrient enrichment on algal biomass and the resulting impacts on stream chemistry. The paper continues with an explanation of the less well documented indirect ecological effects of nutrient enrichment on stream structure and function, including effects of excess growth on physical habitat, and alterations to aquatic life community structure from the microbial assemblage to fish and mammals. The paper also dicusses effects on the ecosystem level including changes to productivity, respiration, decomposition, carbon and other geochemical cycles. The paper ends by discussing the significance of these direct and indirect effects of nutrient enrichment on designated uses - especially recreational, aquatic life, and drinking water. 2 1. Introduction 1.1 Stream processes Streams are all flowing natural waters, regardless of size. To understand the processes that influence the pattern and character of streams and reduce natural variation of different streams, several stream classification systems (including ecoregional, fluvial geomorphological, and stream order classification) have been adopted by state and national programs. Ecoregional classification is based on geology, soils, geomorphology, dominant land uses, and natural vegetation (Omernik 1987). Fluvial geomorphological classification explains stream and slope processes through the application of physical principles. Rosgen (1994) classified stream channels in the United States into seven major stream types based on morphological characteristics, including entrenchment, gradient, width/depth ratio, and sinuosity in various land forms. -
UNU-IAS Policy Report
UNU-IAS Policy Report Cities, Biodiversity and Governance: Perspectives and Challenges of the Implementation of the Convention on Biological Diversity at the City Level The United Nations University Institute of Advanced Studies (UNU-IAS) is a global think tank whose mission is “to advance knowledge and promote learning for policy-making to meet the challenges of sustainable development”. UNU-IAS undertakes research and postgraduate education to identify and address strategic issues of concern for all humankind, for governments, decision-makers, and particularly, for developing countries. Established in 1996, the Institute convenes expertise from disciplines such as economics, law, social and natural sciences to better understand and contribute creative solutions to pressing global concerns, with research and programmatic activities related to current debates on sustainable development: . Biodiplomacy Initiative . Ecosystem Services Assessment . Satoyama Initiative . Sustainable Development Governance . Education for Sustainable Development . Marine Governance . Traditional Knowledge Initiative . Science and Technology for Sustainable Societies . Sustainable Urban Futures UNU-IAS, based in Yokohama, Japan, has two International Operating Units: the Operating Unit Ishikawa/Kanazawa (OUIK) in Japan, and the Traditional Knowledge Initiative (TKI) in Australia. UNU-IAS Policy Report Cities, Biodiversity and Governance: Perspectives and Challenges of the Implementation of the Convention on Biological Diversity at the City Level Jose Antonio -
The Effects of Urbanization on Natural Resources in Jamaica
Doneika Simms. The Effects of Urbanization on Natural Resources in Jamaica . 44th ISOCARP Congress 2008 THE EFFECTS OF URBANIZATION ON NATURAL RESOURCES IN JAMAICA BACKGROUND OF STUDY AREA Jamaica is the third largest island in the Caribbean, comprising of approximately 4,400 sq. miles or 10,991 square kilometers in area. Over two-thirds of the country’s land resources consist of a central range of hills and mountains, with the Blue Mountain Range being the most significant, ranging over 6000 ft. in height (GOJ, 1994; Clarke, 2006). This means that urban development in areas such as the capital city of Kingston and other principal towns such as Montego Bay and Ocho Rios is limited to the relatively small amount of flat lands most of which has a coastal location (see figure 1). Figure 1 Showing a Map of Jamaica and the Various Cities along the Coast Source: http://www.sangstersrealty.com/jamaica_map.htm Although a significant portion of the terrain is mountainous, in several places the coastal plain extends to form broad embayments. Among these, a dry embankment on the south side of the island known as the Liguanea Plain has been occupied by the city of Kingston. The built-up area of the city spreads over 50 sq. miles and comprises the parish of Kingston and the suburban section of St. Andrew. The city is located on the eastern side of the island which is sheltered from the north-east trade winds by the Blue Mountains, hence being ideal for the major seaport of the country- the Kingston Harbour (Clarke, 2006). -
Urbanization As a Threat to Biodiversity: Trophic Theory, Economic Geography, and Implications for Conservation Land Acquisition
Proceedings of a Symposium at the Society for Conservation Biology 2004 Annual Meeting URBANIZATION AS A THREAT TO BIODIVERSITY: TROPHIC THEORY, ECONOMIC GEOGRAPHY, AND IMPLICATIONS FOR CONSERVATION LAND ACQUISITION Brian Czech1 ABSTRACT—Habitat loss is often cited as the primary cause of species endangerment in the United States, followed by invasive species, pollution, and direct take. Urbanization, one type of habitat loss, is the leading cause of species endangerment in the contiguous United States and entails a relatively thorough transformation from the “economy of nature” to the human economy. Principles of economic geography indicate that urbanization will continue as a function of economic growth, while principles of conservation biology indicate that the most thorough competitive exclusion occurs in urban areas. These findings suggest the need for an ecologically macroeconomic approach to conservation land acquisition strategies. “Habitat loss” is often cited as the primary cause of species these types of habitat loss are considered separate causes of endangerment in the United States, followed by invasive species endangerment, invasive species are identified as the species, pollution, disease, and direct take. However, vari- leading cause of species endangerment in the United States, ous types of habitat loss are readily identified, such as log- including Hawaii and Puerto Rico (Czech et al. 2000). On ging, mining, agriculture, and urbanization (table 1). When the mainland United States, however, urbanization is the Table 1.— Causes of endangerment for the first 877 (of the current 1,262) species in the United States and Puerto Rico classified as threatened or endangered by the United States Fish and Wildlife Service (from Czech et al. -
Future Urban Land Expansion and Implications for Global Croplands
Future urban land expansion and implications for SPECIAL FEATURE global croplands Christopher Bren d’Amoura,b, Femke Reitsmac, Giovanni Baiocchid, Stephan Barthele,f, Burak Güneralpg, Karl-Heinz Erbh, Helmut Haberlh, Felix Creutziga,b,1, and Karen C. Setoi aMercator Research Institute on Global Commons and Climate Change, 10829 Berlin, Germany; bDepartment Economics of Climate Change, Technische Universität Berlin, 10623 Berlin, Germany; cDepartment of Geography,Canterbury University, Christchurch 8140, New Zealand; dDepartment of Geographical Sciences, University of Maryland, College Park, MD 20742; eDepartment of the Built Environment, University of Gävle, SE-80176 Gävle, Sweden; fStockholm Resilience Centre, Stockholm University, SE-10691 Stockholm, Sweden; gCenter for Geospatial Science, Applications and Technology (GEOSAT), Texas A&M University, College Station, TX 77843; hInstitute of Social Ecology Vienna, Alpen-Adria Universitaet Klagenfurt, 1070 Vienna, Austria; and iYale School of Forestry and Environmental Studies, Yale University, New Haven, CT 06511 Edited by Jay S. Golden, Duke University, Durham, NC, and accepted by Editorial Board Member B. L. Turner November 29, 2016 (received for review June 19, 2016) Urban expansion often occurs on croplands. However, there is little India, and other countries (7–9). Although cropland loss has scientific understanding of how global patterns of future urban become a significant concern in terms of food production and expansion will affect the world’s cultivated areas. Here, we combine livelihoods (10) for many countries, there is very little scientific spatially explicit projections of urban expansion with datasets on understanding of how future urban expansion and especially global croplands and crop yields. Our results show that urban ex- growth of MURs will affect croplands. -
Safe Use of Wastewater in Agriculture Safe Use of Safe Wastewater in Agriculture Proceedings No
A UN-Water project with the following members and partners: UNU-INWEH Proceedings of the UN-Water project on the Safe Use of Wastewater in Agriculture Safe Use of Wastewater in Agriculture Wastewater Safe of Use Proceedings No. 11 No. Proceedings | UNW-DPC Publication SeriesUNW-DPC Coordinated by the UN-Water Decade Programme on Capacity Development (UNW-DPC) Editors: Jens Liebe, Reza Ardakanian Editors: Jens Liebe, Reza Ardakanian (UNW-DPC) Compiling Assistant: Henrik Bours (UNW-DPC) Graphic Design: Katja Cloud (UNW-DPC) Copy Editor: Lis Mullin Bernhardt (UNW-DPC) Cover Photo: Untited Nations University/UNW-DPC UN-Water Decade Programme on Capacity Development (UNW-DPC) United Nations University UN Campus Platz der Vereinten Nationen 1 53113 Bonn Germany Tel +49-228-815-0652 Fax +49-228-815-0655 www.unwater.unu.edu [email protected] All rights reserved. Publication does not imply endorsement. This publication was printed and bound in Germany on FSC certified paper. Proceedings Series No. 11 Published by UNW-DPC, Bonn, Germany August 2013 © UNW-DPC, 2013 Disclaimer The views expressed in this publication are not necessarily those of the agencies cooperating in this project. The designations employed and the presentation of material throughout this publication do not imply the expression of any opinion whatsoever on the part of the UN, UNW-DPC or UNU concerning the legal status of any country, territory, city or area or of its authorities, or concerning the delimitation of its frontiers or boundaries. Unless otherwise indicated, the ideas and opinions expressed by the authors do not necessarily represent the views of their employers. -
Spatiotemporal Variability of Urban Heat Island: Influence of Urbanization on Seasonal Pattern of Land Surface Temperature in the Metropolitan Region of Belém, Brazil
Scientific Article doi: 10.1590/2175-3369.013.e20200260 Spatiotemporal variability of urban heat 3369 island: Influence of urbanization on - seasonal pattern of land surface temperature in the Metropolitan Region ISSN 2175 of Belém, Brazil Variabilidade espaço-temporal das ilhas de calor urbano: Influência da urbanização no padrão sazonal da temperatura da superfície terrestre na Região Metropolitana de Belém, Brasil Licenciadosob uma Licença Creative Commons Jefferson Inayan de Oliveira Souto [a] , Julia Clarinda Paiva Cohen [a] [a] Universidade Federal do Pará, Instituto de Geociências, Belém, PA, Brasil How to cite: Souto, J. I. O., & Cohen, J. C. P. (2021). Spatiotemporal variability of urban heat island: Influence of urbanization on seasonal pattern of land surface temperature in the Metropolitan Region of Belém, Brazil. urbe. Revista Brasileira de Gestão Urbana, v. 13, e20200260. https://doi.org/10.1590/2175-3369.013.e20200260 Abstract Cities experience the extensive urban heat island effect (UHI), which continue to pose challenges for humanity's increasingly urban population, where tropical cities have experienced a continued and rapid urbanization process in the past few decades. We present the evolution of surface UHI and its controlling factors in the Metropolitan Region of Belém, over the last 16 years (2003–2018), which has experienced unique consolidated economic growth and urban transformation under wet equatorial climate. We incorporate MODIS and Landsat satellite data and evaluate statistical techniques for estimates the variation in the land surface temperature (LST) during two seasons: wet season and dry season. Our result revealed that the regions of fast urbanization resulted in a decrease of normalized difference vegetation index and increase of LST. -
Land Degradation
SPM4 Land degradation Coordinating Lead Authors: Lennart Olsson (Sweden), Humberto Barbosa (Brazil) Lead Authors: Suruchi Bhadwal (India), Annette Cowie (Australia), Kenel Delusca (Haiti), Dulce Flores-Renteria (Mexico), Kathleen Hermans (Germany), Esteban Jobbagy (Argentina), Werner Kurz (Canada), Diqiang Li (China), Denis Jean Sonwa (Cameroon), Lindsay Stringer (United Kingdom) Contributing Authors: Timothy Crews (The United States of America), Martin Dallimer (United Kingdom), Joris Eekhout (The Netherlands), Karlheinz Erb (Italy), Eamon Haughey (Ireland), Richard Houghton (The United States of America), Muhammad Mohsin Iqbal (Pakistan), Francis X. Johnson (The United States of America), Woo-Kyun Lee (The Republic of Korea), John Morton (United Kingdom), Felipe Garcia Oliva (Mexico), Jan Petzold (Germany), Mohammad Rahimi (Iran), Florence Renou-Wilson (Ireland), Anna Tengberg (Sweden), Louis Verchot (Colombia/ The United States of America), Katharine Vincent (South Africa) Review Editors: José Manuel Moreno (Spain), Carolina Vera (Argentina) Chapter Scientist: Aliyu Salisu Barau (Nigeria) This chapter should be cited as: Olsson, L., H. Barbosa, S. Bhadwal, A. Cowie, K. Delusca, D. Flores-Renteria, K. Hermans, E. Jobbagy, W. Kurz, D. Li, D.J. Sonwa, L. Stringer, 2019: Land Degradation. In: Climate Change and Land: an IPCC special report on climate change, desertification, land degradation, sustainable land management, food security, and greenhouse gas fluxes in terrestrial ecosystems [P.R. Shukla, J. Skea, E. Calvo Buendia, V. Masson-Delmotte, H.-O. Pörtner, D. C. Roberts, P. Zhai, R. Slade, S. Connors, R. van Diemen, M. Ferrat, E. Haughey, S. Luz, S. Neogi, M. Pathak, J. Petzold, J. Portugal Pereira, P. Vyas, E. Huntley, K. Kissick, M. Belkacemi, J. Malley, (eds.)]. In press. -
Land Consumption and Land Take: Enhancing Conceptual Clarity for Evaluating Spatial Governance in the EU Context
sustainability Article Land Consumption and Land Take: Enhancing Conceptual Clarity for Evaluating Spatial Governance in the EU Context Elisabeth Marquard 1,* , Stephan Bartke 1 , Judith Gifreu i Font 2 , Alois Humer 3 , Arend Jonkman 4 , Evelin Jürgenson 5, Naja Marot 6, Lien Poelmans 7 , Blaž Repe 8 , Robert Rybski 9, Christoph Schröter-Schlaack 1, Jaroslava Sobocká 10, Michael Tophøj Sørensen 11 , Eliška Vejchodská 12,13 , Athena Yiannakou 14 and Jana Bovet 15 1 Helmholtz Centre for Environmental Research—UFZ, Department of Economics, Permoserstraße 15, 04318 Leipzig, Germany; [email protected] (S.B.); [email protected] (C.S.-S.) 2 Faculty of Law, Universitat Autònoma de Barcelona, Bellaterra (Cerdanyola del Vallès), 08193 Barcelona, Spain; [email protected] 3 Department of Geography and Regional Research, University of Vienna, Universitaetsstrasse 7/5, 1010 Vienna, Austria; [email protected] 4 Department of Management in the Built Environment, Delft University of Technology, Julianalaan 134, 2628BL Delft, The Netherlands; [email protected] 5 Chair of Geomatics, Institute of Forestry and Rural Engineering, Estonian University of Life Sciences, Kreutzwaldi 5, 51014 Tartu, Estonia; [email protected] 6 Biotechnical Faculty, Department of Landscape Architecture, University of Ljubljana, Jamnikarjeva ulica 101, 1000 Ljubljana, Slovenia; [email protected] 7 VITO—Vlaamse Instelling voor Technologisch Onderzoek, Unit Ruimtelijke Milieuaspecten, Boeretang 200, 2400 Mol, Belgium; [email protected] -
Environmental Regulation and Land Use Change: Do Local Wetlands Bylaws Slow the Conversion of Open Spaces to Residential Uses?
LAND USE REGULATION AND HOUSING Environmental Regulation and Land Use Change: Do Local Wetlands Bylaws Slow the Conversion of Open Spaces to Residential Uses? By Katharine R. E. Sims and Jenny Schuetz Kennedy School of Government June 2007 RAPPAPORT Institute for Greater Boston Kennedy School of Government, Harvard University Environmental Regulation and Land Use Change: Do Local Wetlands Bylaws Slow the Conversion of Open Space to Residential Uses? Katharine R.E. Sims and Jenny Schuetz CID Graduate Student and Postdoctoral Fellow Working Paper No. 18, May 2007 © Copyright 2007 Katharine R.E. Sims, Jenny Schuetz, and the President and Fellows of Harvard College Working Papers Center for International Development at Harvard University Environmental regulation and land use change: Do local wetlands bylaws slow the conversion of open space to residential uses? Katharine R. E. Sims† and Jenny Schuetz‡ Abstract The conversion of open space land to residential, commercial, and industrial uses as cities develop is an issue of significant environmental concern. Local governments play a key role in land use decisions and can use a variety of policy tools to influence the rate of land use change or to permanently protect open space. An important but controversial form of local regulation in Massachusetts is local wetlands protection bylaws, which give towns and cities additional regulatory power over land near wetlands. This paper uses newly compiled information about land use regulations in towns and cities in eastern Massachusetts, in combination with data on land use changes and other community characteristics, to analyze the relationship between local wetlands bylaws and rates of conversion from open space to residential land uses between 1985 and 1999. -
Wildland Fire in Ecosystems: Effects of Fire on Fauna
United States Department of Agriculture Wildland Fire in Forest Service Rocky Mountain Ecosystems Research Station General Technical Report RMRS-GTR-42- volume 1 Effects of Fire on Fauna January 2000 Abstract _____________________________________ Smith, Jane Kapler, ed. 2000. Wildland fire in ecosystems: effects of fire on fauna. Gen. Tech. Rep. RMRS-GTR-42-vol. 1. Ogden, UT: U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station. 83 p. Fires affect animals mainly through effects on their habitat. Fires often cause short-term increases in wildlife foods that contribute to increases in populations of some animals. These increases are moderated by the animals’ ability to thrive in the altered, often simplified, structure of the postfire environment. The extent of fire effects on animal communities generally depends on the extent of change in habitat structure and species composition caused by fire. Stand-replacement fires usually cause greater changes in the faunal communities of forests than in those of grasslands. Within forests, stand- replacement fires usually alter the animal community more dramatically than understory fires. Animal species are adapted to survive the pattern of fire frequency, season, size, severity, and uniformity that characterized their habitat in presettlement times. When fire frequency increases or decreases substantially or fire severity changes from presettlement patterns, habitat for many animal species declines. Keywords: fire effects, fire management, fire regime, habitat, succession, wildlife The volumes in “The Rainbow Series” will be published during the year 2000. To order, check the box or boxes below, fill in the address form, and send to the mailing address listed below. -
Public Incentives Harmful to Biodiversity
REPORTS & DOCUMENTS Public Incentives Harmful to Biodiversity Sustainable Development Report of the commission chaired by Guillaume Sainteny Public Incentives Harmful to Biodiversity Guillaume Sainteny Chairman Jean-Michel Salles Vice-Chairman Peggy Duboucher, Géraldine Ducos, Vincent Marcus, Erwan Paul Rapporteurs Dominique Auverlot, Jean-Luc Pujol Coordinators October 2011 March 2015 for the English version Foreword Public debate has sometimes tended to equate preservation of biodiversity with the emblematic fate of certain endangered species. We now know the importance of protecting fauna and flora as a whole, not only in certain “hotspots” upon the earth, but even in our local meadows and lawns. Of course, this involves not only the variety of species – and thereby the planet’s genetic heritage –, but also the many interactions between the latter (through pollination, predation and symbiosis) and the full scope of “services rendered” to mankind. For even though we are not always aware of it, mankind benefits from the immense services freely provided by ecosystems. This is the source from which we draw our food, as well as fuel and building materials. Apart from these “appropriable” goods, biodiversity enables the purification of water, climate stabilisation and mitigation, and the regulation of floods, droughts and epidemics. In short, biodiversity is vital for us. Yet, throughout the world, an increasingly rapid rate of decline in biodiversity has been observed for several decades, giving rise to fears of serious upheavals in our