Ecology
Click on underlined subject area to access reference
• Basics. Introductions, Hyperlinks
• Biodiversity and Adaptations
• Biomes, Ecosystems, Habitats
o Specific Biomes
o Ecosystems
• Cycles, Chains, Webs, Pyramids
• Ecological Concerns, Solutions
• Gaia Hypothesis
• Unit Photos, Illustrations, GIF's 
Basics, Introductions, Hyperlinks
Bacterial and Fungal Taxonomy, Diagnostics and Ecology
http://www.plbio.kvl.dk/~dacoj3/diag/tax-diag.htm
 
Behavioral Ecology 
http://www3.oup.co.uk/jnls/list/beheco/scope/
 
Biology Lessons for Teachers: Ecology/Environment
http://www.biologylessons.sdsu.edu/classes/index.html
 
Biomes — Menus
http://www.ucmp.berkeley.edu/glossary/gloss5/biome/index.html
 
Competitive exclusion principle — Competition between species (Gauss)
http://www.gypsymoth.ento.vt.edu/~sharov/PopEcol/lec11/inter.html
 
Dichotomous Keys  — How to use
http://www.gladescropcare.com/htdky.html
 
Dichotomous Key Construction I
http://www.iit.edu/~smile/bi8611.html
 
Dichotomous Key Construction II — Plus directions for use
http://www.zoo.utoronto.ca/able/volumes/vol-12/7-timme/7-timme.htm
 
Ecological Terms: Glossary
http://www.ucmp.berkeley.edu/glossary/gloss5ecol.html
 
Ecology, Biogeography — Introduction
http://www.geog.ouc.bc.ca/physgeog/contents/chapter9.html
 
Ecology Chapter — Information, hyperlinks
http://project.bio.iastate.edu/Articulation/ISU/Freshman/Biol_201/Outlines/chp46.html
 
Ecology Page — Extensive alphabetical links
http://pbil.univ-lyon1.fr/Ecology/Ecology-WWW.html
 
Ecology: Populations — Growth, range, density, hyperlinks
http://www.emc.maricopa.edu/faculty/farabee/BIOBK/BioBookpopecol.html
 
Ecology: Populations: Quantative Studies — Population structure, dynamics 
http://www.ento.vt.edu/~sharov/PopEcol/
 
Education: Natural History Museum: London — Schools and colleges
http://www.nhm.ac.uk/education/schools_and_colleges/index.html
 
Environmental Jobs and Careers I
http://www.ejobs.org/ and Careers

Environmental Jobs and Careers II — Outdoor
http://www.princeton.edu/~oa/jobs/careeroe.html

Environmental Jobs and Careers III — Extensive
http://www.ecojobs.com/
 
Environmental Life Science Lessons — For teachers
http://www.gsu.edu/~mstjrh/ Internet Quests
 
Environmental Protection Agency: Education Center
http://www.epa.gov/teachers/
 
Environmental Resources  — Very extensive topics
http://www.library.wisc.edu/libraries/Steenbock/subjectguide/environment.htm
 
Environmental Resources on the Internet
http://www.ulb.ac.be/ceese/meta/cds.html
 
Field Trips Website — A variety of fild trips
http://www.field-trips.org/trips.htm
 
Gaussian Plume Model — Competitive exclusion
http://www.ce.utexas.edu/prof/maidment/risk/lecture/ln3979.html
 
Microbal Ecology Resources — 6 links to resources
http://commtechlab.msu.edu/sites/dlc-me/resources/riindex.html
 
Mutualism: Rainforest — Plus hyperlinks to countries, organisms, other related topics
http://www.saverfn.org/
 
Natural History Museum: London
http://www.nhm.ac.uk/
 
Population Ecology I — Ecology, growth, range, density, hyperlinks
http://www.emc.maricopa.edu/faculty/farabee/BIOBK/BioBookpopecol.html
 
Population Ecology II — 60+ topical hyperlinks
http://www.ento.vt.edu/~sharov/popechome/refernce.html#topics
 
Population Ecology: Quantative Studies — Population structure, dynamics 
http://www.ento.vt.edu/~sharov/PopEcol/
 
Populations: Estimating Size and Density
http://www.science.org.au/nova/001/001box03.htm
 
Water Ecology — FAQ. (English, German, French, Spanish, and Dutch)
http://www.lenntech.com/water-FAQ.htm
 
Wildlife — Links, references
http://www.library.wisc.edu/guides/Biology/
 
World Species List Taxa Database: Plants, Animals, Microbes
http://www.envirolink.org/species/
 
 
Biodiversity and Adaptations
Acacia — acacia-ant-herbivore interactions
http://carbon.cudenver.edu/~gcronin/acacia.htm

Acacia and Ants
http://cgee.hamline.edu/see/questions/dp_interliving/dp_inter_antacacia.htm
 
Acacia and Ants — Mutualistic relationship
http://www.eeb.uconn.edu/courses/eeb244/eeb244f00/Lec7web/tsld010.htm
 
Adaptations: Animals — Structural, Behavioral  
http://www.nhptv.org/natureworks/nwep1.htm
 
Animal Adaptations
http://www.accessexcellence.org/AE/ATG/data/released/0542-BehmLisa/
 
Angiosperm Diversity
http://www.hcs.ohio-state.edu/hort/biology/dangi.html
 
Animals: Land Adaptations — Colonization of land by tetrapods
http://www.nhm.ac.uk/science/intro/palaeo/project5/
 
Biodiversity — 7 hyperlinks. NBII
http://www.nbii.gov/issues/biodiversity/
 
Biodiversity Action PlansI — England
http://www.english-nature.org.uk/baps/links/links.asp
 
Biodiversity: Australia I
http://www.ea.gov.au/biodiversity/
 
Biodiversity: Australia II
http://www.austmus.gov.au/biodiversity/index.htm
 
Biodiversity and Conservation — Hypertext, Chapter hyperlinks
http://darwin.bio.uci.edu/~sustain/bio65/Titlpage.htm
 
Biodiversity and Ecology
http://conbio.net/vl/
 
Biodiversity: Global Outlook — Status and trends
http://www.biodiv.org/gbo/chap-01/chap-01.asp
 
Biodiversity Index Page — Hyperlinks to current issues
http://www.actionbioscience.org/biodiversity/index.html
 
Biodiversity: New Zealand — Info, strategies
nhttp://www.natureandco.co.nz/conservation/issues/biodiv/nz-bdiv-str.htm
 
Biodiversity: Status & Trends
http://www.cise-scie.ca/biodiversity/en/mbi.html

Biodiversity: Trends
http://www.scs.carleton.ca/~schriste/writings/TrendsInBiodiversity.html
 
Biodiversity and Wildlife Activities 
http://eelink.net/eeactivities-wildlifeandbiodiversity.html 
 
Bioluminesence I — Hyperlinks
Lhttp://siobiolum.ucsd.edu/Biolum_intro.html
 
Bioluminescence II — Info, hyperlinks
http://lifesci.ucsb.edu/~biolum/
 
Bristlecone Pine - Oldest living organism
http://www.sonic.net/bristlecone/intro.html
 
Cactus Survival Characteristics
http://www.cactusmuseum.com/survival.asp
 
Coloration: Protective — Columbia Electronic Library
http://www.encyclopedia.com/searchpool.asp?target=@DOCTITLE%20coenzyme
 
Density Dependent and Independent Variables — K and r-Strategists
http://www-biol.paisley.ac.uk/scicalc/variables.html
 
Desert Animal Adaptations
http://www.desertusa.com/survive.html
 
Desert Plant Adaptations I
http://www.cartage.org.lb/en/themes/Sciences/BotanicalSciences/PlantsAdaptability/DesertPlant/DesertPlant.htm
 
Desert Plant Adaptations II
http://www.desertusa.com/du_plantsurv.html
 
Desert Plant Adaptations III — Extensive info
http://www.uoregon.edu/~opp/professional/enviro/lectures/desert_plant_adapts.pdf
 
Diversity: Animals — Diversity by habitats, by orders. Includes info on 124 vertebrates
http://www.nhptv.org/natureworks/nw4.htm
 
Diversity: Prokaryotic I
http://www.ns.purchase.edu/biology/bio1560lab/prokaryotic_diversity.htm
 
Diversity: Prokaryotic II
http://www.life.umd.edu/classroom/bsci424/BSCI223WebSiteFiles/Chapter11.htm
 
Biodiversity: Value I
http://www.nhm.ac.uk/science/projects/worldmap/diversity/
 
Biodiversity: Value II — Internal topical links
http://www.deh.gov.au/biodiversity/publications/series/paper1/
 
Extremophiles I — Archaea
http://www.bacteriamuseum.org/niches/evolution/extremophiles.shtml
 
Extremophiles II — Archaea
http://www.ucmp.berkeley.edu/archaea/archaea.html
 
Extremophiles III — National Geographic News
http://news.nationalgeographic.com/news/2004/05/0521_040521_extremeheat.html
 
Extremophiles IV — Highly tolerant microbes
http://www.accessexcellence.org/WN/SU/extremefeb04.html
 
Firefly Signal Evolution - Bioluminescence
http://lifesci.ucsb.edu/~biolum/forum/mbranham1.html
 
Genetic Diversity I
http://www.sciencenetlinks.com/lessons.cfm?DocID=89
 
Genetic Diversity II — Estimates of biodiversity value
http://www.rrz.uni-hamburg.de/biologie/b_online/library/biodiversity/Genes.htm
 
Genetic Diversity III — Introduction
http://genetics.nbii.gov/GeneticDiversity.html
 
Genetic Diversity III
http://genetics.nbii.gov/GeneticDiversity.html
 
Halophytes and Xerophalophytes
http://www.botgard.ucla.edu/html/botanytextbooks/lifeforms/halophytes/
 
Hibernation I — Defined, Information
http://www.crystalinks.com/hibernation.html
 
Hibernation II
http://www.nk.psu.edu/naturetrail/Winter/hibernation.htm
 
K-strategists vs. r-strategists I
http://www.wwfcanada.org/AboutWWF/WhatWeDo/TheNatureAudit/TheNatureAudit.asp?page=2.15
 
K-strategists vs. r-strategists II http://users.rcn.com/jkimball.ma.ultranet/BiologyPages/P/Populations2.html#r-Strategists_and_K-Strategists
 
Land Adaptations: Plants I
http://curriculum.calstatela.edu/courses/builders/lessons/less/les8/Vles8.html

Land Adaptations: Plants II
http://www.bios.niu.edu/stafstrom/bios305/01-intro.pdf
 
Lichens — Taxonomy, database
http://mgd.nacse.org/hyperSQL/lichenland/
 
Mimicry I — Many illustrations
http://cgee.hamline.edu/see/questions/dp_transformation/dp_trans_adapt_mimic.html
 
Mimicry II — Columbia Electronic Library
http://www.encyclopedia.com/searchpool.asp?target=@DOCTITLE%20mimicry
 
Mimicry III — Information and student activities
http://www.accessexcellence.com/AE/AEPC/WWC/1995/mimicry.html
 
Mimicry: Batesian and Mullerian — Monarch, Viceroy and Queens butterflies
http://www.chebucto.ns.ca/Environment/NHR/monarch.html
 
Mimicry — Batesian, Mullerian, aggressive
http://home.att.net/~dorak/evolution/mimicry.html
 
Mimicry: Insects
http://www.ndsu.nodak.edu/entomology/topics/mimicry.htm
 
Mimicry and Protective Coloration
http://cgee.hamline.edu/see/questions/dp_transformation/dp_trans_adapt_mimic.htm
 
Monarchs, Viceroys and Queens — Batesian and Mullerian mimicry
http://www.chebucto.ns.ca/Environment/NHR/monarch.html
 
Parasitic Adaptations — Info and many internal topical links
http://users.rcn.com/jkimball.ma.ultranet/BiologyPages/G/Games.html
 
Parasitism and Predation — Information, graphs, references
http://www.globalchange.umich.edu/globalchange1/current/lectures/predation/predation.html
 
Parthenogenesis
http://www.canisius.edu/~morriss/bio102/study42.html
 
Plant Adaptations I
http://www.microscopy-uk.org.uk/mag/articles/anne1.html

Plant Adaptations: Light Intensity  — Sun and shade plants
http://www.shef.ac.uk/aps/apsrtp/thomas/4-0.htm
 
Plant Adaptations: Drought
http://ag.arizona.edu/OALS/oals/alrsgp/faculty/mclaughlin/aridlands.html#adapt
 
Plant Adaptations to Predation I — Morphological
http://www.eap.mcgill.ca/MagRack/JPR/JPR_11.htm 

Plant Adaptations to Predation II — 5 clickable species
http://www.learn.co.uk/default.asp?WCI=Unit&WCU=1737 
 
Plant Adaptations: Submerged and Floating Plants
http://www.offwell.free-online.co.uk/wetland_survey/adaptns.htm
 
Plants: Land Colonization I — Notes
http://www.mansfield.ohio-state.edu/~sabedon/campbl29.htm
 
Plants: Land Colonization II
http://biosci.usc.edu/courses/2002-fall/documents/bisc120-lecture05.pdf
 
Plants: Land Colonization III — New discovery dates
http://www.usatoday.com/news/science/aaas/2001-08-09-plant-evolution.htm
 
Plant/Bacteria Interactions — Genetic Engineering. 3 links
http://www.rrz.uni-hamburg.de/biologie/b_online/e34/34.htm
 
Plant/Fungi Interactions — Parasitic and symbiotic relationships
http://www.rrz.uni-hamburg.de/biologie/b_online/e33/33.htm
 
Plants: Land Adaptations  — Extensive info and topical links
http://curriculum.calstatela.edu/courses/builders/lessons/less/les8/Vles8.html 
 
Plants: Water Loss Adaptations
http://www.microscopy-uk.org.uk/mag/articles/anne1.html
 
Poison Arrow Frog I
http://www.nashvillezoo.org/blfrog.htm
 
Pollination — Discussion and illustrations: flowering plants
http://koning.ecsu.ctstateu.edu/Plants_Human/pollenadapt.html
 
Pollination Adaptations — Discussion and illustrations:floweringplants
http://koning.ecsu.ctstateu.edu/Plants_Human/pollenadapt.html
 
Polyploidy
http://www.rrz.uni-hamburg.de/biologie/b_online/e12/12a.htm
 
Polymorphism — Defined
http://www.webopedia.com/TERM/p/polymorphism.html
 
Polymorphism I
http://www.cco.caltech.edu/~brokawc/Bi11/polymorphism.html   
 
Polymorphism II — Information. 8 links to different types with examples
http://www.ultranet.com/~jkimball/BiologyPages/P/Polymorphisms.html
 
Population Ecology
http://www.emc.maricopa.edu/faculty/farabee/BIOBK/BioBookpopecol.html

Population Ecology — Quantitative, extensive.  Series of hyperlinked notes
http://www.ento.vt.edu/~sharov/PopEcol/
 
Predation and Parasitism — Information, graphs, references
http://www.globalchange.umich.edu/globalchange1/current/lectures/predation/predation.html
 
Predator, Prey: Didinium, Paramecium
http://www.idlex.freeserve.co.uk/idle/evolution/ref/pianka1.html
 
Predator, Prey Relationships — Wolves, mountain lions, deer and elk
http://www.westernhunter.com/Pages/Vol04Issue09/predators.html
 
Prey Defenses — Camouflage, chemical, aposematic, mimicry
http://users.rcn.com/jkimball.ma.ultranet/BiologyPages/M/Mimicry.html
 
Primate Adaptations
http://www.emc.maricopa.edu/faculty/farabee/BIOBK/BioBookHumEvol.html
 
Primates — Anatomy, behavior, ecology, evolution
http://www.primate.wisc.edu/pin/aboutp.html
 
Prokaryotic Diversity I
http://www.life.umd.edu/classroom/bsci424/BSCI223WebSiteFiles/Chapter11.htm
 
Prokaryotic Diversity II
http://www.ns.purchase.edu/biology/bio1560lab/prokaryotic_diversity.htm
 
Protective Coloration: — Columbia encyclopedia article with hyperlinks
http://www.encyclopedia.com/searchpool.asp?target=@DOCTITLE%20protective%20coloration

Protective Coloration and Camouflage I — Flounder
http://www.improb.com/airchives/paperair/volume6/v6i3/saidel-fish.html
 
Protective Coloration and Camoflage II  
http://www.accessexcellence.org/AE/AEPC/WWC/1995/camouflage.html
 
Protective Coloration and Mimicry
http://cgee.hamline.edu/see/questions/dp_transformation/dp_trans_adapt_mimic.htm
 
Reproduction: Sexual — An evolutionary conundrum
http://gales.ecs.soton.ac.uk/~gep98r/third.html
 
Reproduction: Sexual vs. Asexual I — Basic outlined information
http://www.snow.edu/~allans/biology1010/sexvasex.html
 
Reproduction: Sexual vs. Asexual II — News release
http://www.eurekalert.org/pub_releases/2001-10/uoc--sva101701.php
 
Species Finder Field Guides
http://www.enature.com/search/show_search_byShape.asp?curGroupID=2&shapeID=986
 
Species, Populations, Communities, Ecosystems
http://www.geog.ouc.bc.ca/physgeog/contents/9d.html
 
Symbiosis I — types and discussion
http://www.cod.edu/people/faculty/fancher/Symbio.htm
 
Symbiosis II — Types. Extensive info, links, charts diagrams
http://users.rcn.com/jkimball.ma.ultranet/BiologyPages/S/Symbiosis.html
 
Symbiosis: Animals — A few examples detailed
http://www.york.ac.uk/depts/biol/units/symbiosis/intro.htm
 
Symbiosis and Commensalism — Information, examples
http://www.seacave.com/sym.html
 
Symbiosis: Lichens — Phylum Mycophycophyta, photos, info
http://www.perspective.com/nature/fungi/lichens.html
 
Symbiosis: Mutualism — Extensive information, chart
http://trc.ucdavis.edu/catoft/EVE101/Lec9mut.htm
 
Tropical Rainforest Plant Adaptations
http://www.hewett.norfolk.sch.uk/curric/NewGeog/Habitats/adapt.htm
 
Water Balance (Homeostasis)
http://users.tamuk.edu/kfjab02/Biology/Vertebrate%20Zoology/b3405_ch04.htm
 
Weed Ecology
http://www.landcareresearch.co.nz/education/weeds/weedinfoa-4.asp
 
World Species Index
http://www.sp2000.org/
 
 
Biomes, Ecosystems, Habitats
Arctic Animals — Illustrations, elementary info
http://www.enchantedlearning.com/coloring/arcticanimals.shtml
 
Aquatic Biology — (NBII) 
http://www.nbii.gov/education/aquatic.html
 
Biogeology — Biotic, hydrologic and terrestrial interactions
http://www.geol.ucsb.edu/Research/TopicsInfo/Biogeology.html
 
Biome Distribution Map
http://www.ultranet.com/~jkimball/BiologyPages/B/Biomes.html
 
Biome Links I — Biomes and Ecosystem links
http://members.aol.com/bowermanb/ecosystems.html
 
Biome Links II — Intro to extensive hyperlinks
http://www.jlhs.nhusd.k12.ca.us/Classes/Science/Net_Lessons/Biomes/Biomelinks.html
 
Biome Map — Color coded biomes
http://www.worldbiomes.com/biomes_map.htm
 
Biomes — Broad description. discussion
http://en.wikipedia.org/wiki/Biome
 
Biomes I — 17 biome links
http://www.radford.edu/~swoodwar/CLASSES/GEOG235/biomes/main.html

Biomes II — 23 biome links, references
http://ths.sps.lane.edu/biomes/index1.html
 
Biomes III — 11 biomes hyperlinked
http://www.runet.edu/~swoodwar/CLASSES/GEOG235/biomes/main.html
 
Biomes and Ecosystems — Lesson plan for teachers
http://www.gsu.edu/~mstjrh/biomes.html
 
Biomes: Terrestrial — Info plus great photos
http://www.geo.arizona.edu/Antevs/biomes/
 
Biosphere — Defined with further info
http://ndnd.essortment.com/whatisbiospher_rfpl.htm
 
Community  and Ecosystem Dynamics
http://www.emc.maricopa.edu/faculty/farabee/BIOBK/BioBookcommecosys.html
 
Coral Predators
http://www.town.otsuki.kochi.jp/umi/menu4_e.html
 
Ecosystem — Defined, general information
http://www.biologie.uni-hamburg.de/b-online/e54/54a.htm
 
Ecosystem Analysis
http://www.biologie.uni-hamburg.de/b-online/e54/54b.htm
 
Ecosystem and Community Dynamics
http://www.emc.maricopa.edu/faculty/farabee/BIOBK/BioBookcommecosys.html
 
Ecosystem Ecology
http://bioinquiry.biol.vt.edu/bioinquiry/Cheetah/cheetahpaid/cheetahhtmls/ecosystem.html
 
Ecosystems I — Introduction to the ecosystem concept
http://www.geog.ouc.bc.ca/physgeog/contents/9j.html
 
Ecosystems II — Information, hyperlinks
http://www.marietta.edu/~biol/102/ecosystem.html
 
Exobiology — Introduction to extraterrestrial environments
http://www.chem.duke.edu/~jds/cruise_chem/Exobiology/index.html
 
Freshwater Ecosystems
http://www.ultranet.com/~jkimball/BiologyPages/F/Freshwater.html
 
Indicator Species — Environmental index organisms
http://www.epa.gov/bioindicators/html/indicator.html
 
Intertidal Habitat: Rocky Shores
http://darter.ocps.k12.fl.us/classroom/klenk/Rocky.htm
 
Intertropical Convergence Zone — Influence on wet climates & biomes
http://www.webref.org/chemistry/i/intertropical_convergence_zone.htm
 
Mangroves I — Info
http://agrifor.ac.uk/browse/cabi/detail/e38eed443207e58802143ad5b31aee2b.html
 
Mangroves II — Info
http://www.floridaplants.com/horticulture/mangrove.htm
 
Mangrove Forest Ecology
http://www.earthisland.org/map/mngec.htm

 
Marine Ecosystems
http://www.ultranet.com/~jkimball/BiologyPages/O/Oceans.html
 
Oceanic Thermal Vent Ecosystems
http://seawifs.gsfc.nasa.gov/OCEAN_PLANET/HTML/oceanography_recently_revealed1.html
 
Oceanic Thermal Vents: Organisms
http://seawifs.gsfc.nasa.gov/OCEAN_PLANET/HTML/ps_vents.html
 
Prairie Animals — Illustrations, elementary info
http://www.enchantedlearning.com/biomes/grassland/prairie.shtml
 
Ponds and Lakes — Info and internal links
http://mbgnet.mobot.org/fresh/lakes/index.htm
 
Pond Life Animals — Illustrations, elementary info
http://www.enchantedlearn
 
Rivers and Streams — Info and internal links
http://mbgnet.mobot.org/fresh/rivers/index.htm
 
Salt Marsh, Assateague, VA
http://www.assateague.com/berm.html
 
Salt Marsh Dynamics
http://water.dnr.state.sc.us/marine/pub/seascience/dynamic.html
 
Salt Marsh Vegitation
http://www.humboldt.edu/~ere_dept/marsh/saltveg.html
 
Wetlands I
http://regentsprep.org/Regents/biology/units/ecology/biotic.cfm
Wetlands II — Info, diagrams
http://www.atsdr.cdc.gov/toxfaq.htmlhtml
 
Wetlands III — Info and internal links
http://mbgnet.mobot.org/fresh/wetlands/index.htm
 
Wetlands: Loss and Degradation I
http://www.bergen.org/AAST/Projects/ES/WL/degrade.html
 
Wetlands: Loss and Degradation II — Overview
http://www.ramsar.org/about_wetland_loss.htm
 
Wetlands: Value I
http://www.fpl.com/environment/emb/contents/why_are_wetlands_important.shtml
 
Wetlands: Value II
http://www.tele-works.com/htbin/webware/default.asp?HR=49-18&agency=clackamas&perform=TXT
 
Wetlands: Value II
http://www.laramie1.k12.wy.us/discovery/value.htm
 
 
Specific Biomes
Aquatic I
http://www.ucmp.berkeley.edu/glossary/gloss5/biome/aquatic.html
 
Chaparral I — Mediterranean shrublands
http://www.runet.edu/~swoodwar/CLASSES/GEOG235/biomes/medit/medit.html
 
Chaparral II
http://www.for.nau.edu/azproject/Biozone/int_chap.html
 
Chaparral Animals — Illustrations, elementary info
http://www.enchantedlearning.com/biomes/chaparral/chaparral.shtml
 
Desert Biome Resources 
http://can-do.com/uci/lessons98/Desert.html
 
Deserts I
http://www.ucmp.berkeley.edu/glossary/gloss5/biome/deserts.html
 
Deserts II — Info and hyperlinks
http://mbgnet.mobot.org/sets/desert/index.htm
 
Desert Animals I
http://mbgnet.mobot.org/sets/desert/animals/
 
Desert Animals II — Illustrations, elementary info  
http://www.enchantedlearning.com/biomes/desert/desert.shtml
 
Desert Animal Adaptations
http://www.desertusa.com/survive.html
 
Desert Animals & Wildlife Index: USA
http://www.desertusa.com/animal.html
 
Desert Directory — With 15 related desert hyperlinks
http://www.desertusa.com/index.html
 
Desert Plants — Student activities
http://www.desertusa.com/flora.html
 
Desert Plant Adaptations I
http://www.4corners.net/ccyc/pl3.htm
 
Desert Plant Adaptations II
http://www.desertusa.com/du_plantsurv.html
 
Desert Plants and Wildflowers
http://www.desertusa.com/flora.html
 
Desert, USA
http://www.desertusa.com/
 
Forests: Temperate, Tropical, Taiga
http://www.ucmp.berkeley.edu/glossary/gloss5/biome/forests.html
 
Grassland Animals — Illustrations, elementary info
http://www.enchantedlearning.com/biomes/grassland/grassland.shtml
 
Grassland Conservation
http://www.kentishstour.org.uk/conserving_grasslands.htm
 
Grasslands I — Info and hyperlinks
http://mbgnet.mobot.org/sets/grasslnd/index.htm
 
Grasslands II
http://www.ucmp.berkeley.edu/glossary/gloss5/biome/grasslan.html
 
Grassland, Savannah
http://www.ucmp.berkeley.edu/glossary/gloss5/biome/grasslan.html
 
Habitats of Southern California
http://www.lalc.k12.ca.us/uclasp/local_habitats/habitats/
 
Polar Biome — Arctic, Antarctic
http://www.oocities.org/biomewebquest/PolarLands.html
 
Polar Biome: Palmer Station, Antarctica
http://iceflo.icess.ucsb.edu:8080/ice_hp.php
 
Rainforest Animals I
http://www.enchantedlearning.com/subjects/rainforest/animals/Rfbiomeanimals.shtml:
 
Rainforest Animals II
http://www.pbs.org/tal/costa_rica/res2/animals.html
 
Rainforest Birds
http://www.pbs.org/tal/costa_rica/birds.html
 
Rainforest: Layers — Info, illustrations
http://www.srl.caltech.edu/personnel/krubal/rainforest/Edit560s6/www/whlayers.html
 
Rainforest Plants
http://www.pbs.org/tal/costa_rica/variety.html
 
Rainforest Products: Sustainable
http://www.pbs.org/tal/costa_rica/products.html
 
Rainforests: Structure, Biodiversity — Canopy, area. soils
http://www.mongabay.com/0303.htm
 
Rainforest: Tropical I — Info, map
http://www.blueplanetbiomes.org/rainforest.htm
 
Rainforest: Tropical II — Info, map
http://www.radford.edu/~swoodwar/CLASSES/GEOG235/biomes/rainforest/rainfrst.html
 
Rainforests of the World — Info and hyperlinks
http://mbgnet.mobot.org/sets/rforest/index.htm
 
Savanna Animals — Illustrations, elementary info   
http://www.enchantedlearning.com/biomes/savanna/savanna.shtml
 
Savannah, Grassland
http://www.ucmp.berkeley.edu/glossary/gloss5/biome/grasslan.html
 
Savanna: Tropical
http://www.uwsp.edu/geo/faculty/ritter/geog101/modules/ecosystems_biomes/biomes_savanna_page_1.html
 
Scrubland — Chaparral, Mediterranean
http://www.runet.edu/~swoodwar/CLASSES/GEOG235/biomes/medit/medit.html
 
Taiga I  — Info and hyperlinks
http://mbgnet.mobot.org/sets/taiga/index.htm
 
Taiga II  — Info, maps and Links
http://www.blueplanetbiomes.org/taiga.htm
 
Taiga III  — Info, and Links
http://www.radford.edu/~swoodwar/CLASSES/GEOG235/biomes/taiga/taiga.html
 
Taiga Animals I — Illustrations, elementary info
http://www.enchantedlearning.com/biomes/taiga/taiga.shtml
 
Taiga Animals II
http://mbgnet.mobot.org/sets/taiga/animals/ 
Taiga Animals III
http://www.blueplanetbiomes.org/taiga_animal_page.htm
 
Taiga Plants
http://www.blueplanetbiomes.org/taiga_plant_page.htm
 
Temperate Deciduous Forest I — Location, climate, animals, vegitation
http://ths.sps.lane.edu/biomes/deciduous3/deciduous3.html
 
Temperate Deciduous Forest II — Information, distribution map
http://www.runet.edu/~swoodwar/CLASSES/GEOG235/biomes/tbdf/tbdf.html
 
Temperate Deciduous Forest III — Info and hyperlinks
http://mbgnet.mobot.org/sets/temp/index.htm
 
Temperate Deciduous Forest Animals 
http://www.enchantedlearning.com/biomes/tempdecid/tempdecid.shtml
 
Temportate Rainforests I
http://www.cotf.edu/ete/modules/temprain/temprain.html
 
Temperate Rain Forest II
http://www.ecotrust.org/mission/bioregion.html
 
Temperate Rain Forest III — Olympic National Park
http://www.nps.gov/olym/edurain.htm

Temperate Rainforest IV — Olympic peninsula. Many plant photos
http://www.wsu.edu/~wsherb/edpages/raingrass/temperate.html
 
Tropical Dry Forests I
http://www.botany.wisc.edu/courses/botany_422/Lecture/Lect08TropDry.html
 
Tropical Dry Forests II — Pacific Islands
http://www.pacificislandtravel.com/nature_gallery/eco_tropdryforest.html
 
Tropical Rainforest Forest Courses, Intern Programs
http://www.saverfn.org/
 
Tropical Dry Forests III — Fiji Islands
http://www.nationalgeographic.com/wildworld/profiles/terrestrial/oc/oc0201.html
 
Tropical Rainforest Animals I — Hyperlinks
http://www.pbs.org/tal/costa_rica/res2/animals.html

Tropical Rainforest Animals II — Broad coverage with hyperlinks
http://www.zoomwhales.com/subjects/rainforest/Animals.shtml
 
Tropical Rainforest Plant Adaptations
http://www.hewett.norfolk.sch.uk/curric/NewGeog/Habitats/adapt.htm
 
Tropical Rainforest Plants I
http://www.pbs.org/tal/costa_rica/plants.html

Tropical Rainforest Plants II — Edible plants
http://mbgnet.mobot.org/sets/rforest/plants/
 
Tropical Savanna
http://www.uwsp.edu/geo/faculty/ritter/geog101/modules/ecosystems_biomes/biomes_savanna_page_1.html
 
Tundra I
http://www.ucmp.berkeley.edu/glossary/gloss5/biome/tundra.html
 
Tundra II — Info and hyperlinks
http://mbgnet.mobot.org/sets/tundra/index.htm
 
Tundra III
http://curriculum.calstatela.edu/courses/builders/lessons/less/biomes/tundra/tundrapy.html
 
 
Ecosystems
Ecological Succession I — Info, questions & answers
http://www.nk.psu.edu/naturetrail/succession.htm

Ecological Succession II — Info, history
http://en.wikipedia.org/wiki/Ecological_succession

Ecological Succession Lab
http://www.fiu.edu/~seagrass/class/pcb3043/lab8.html
 
Ecosystems I — Overview, hyperlinks
http://mcnet.marietta.edu/~biol/102/ecosystem.html
 
Ecosystems II
http://www.sirinet.net/~jgjohnso/ecology.html
 
Ecosystems: Abiotic and Biotic Factors
http://regentsprep.org/Regents/biology/units/ecology/biotic.cfm
 
Ecosystems, Habitats
http://www.fi.edu/tfi/units/life/habitat/habitat.html
 
Ecosystems: Productivity
http://users.rcn.com/jkimball.ma.ultranet/BiologyPages/N/NetProductivity.html
 
Species Finder Field Guides
http://www.enature.com/search/show_search_byShape.asp?curGroupID=2&shapeID=986
 
Succession: Temperate Deciduous Forest I
http://www.normanbirdsanctuary.org/nbu/succession/stages.shtml
 
Succession: Temperate Deciduous Forest II
http://www.dsisd.k12.mi.us/mff/Environment/Succession.htm
 
 
Cycles, Chains, Webs, Pyramids
Biological Magnification in Pyramids
http://www.marietta.edu/~biol/102/ecosystem.html#Biologicalmagnification6
 
Carbon Cycle I — Extensive info, diagrams, internal links
http://users.rcn.com/jkimball.ma.ultranet/BiologyPages/C/CarbonCycle.html
 
Carbon Cycle II
http://www.geog.ouc.bc.ca/physgeog/contents/9r.html
 
Coral Reef Food Web
http://coexploration.org/bbsr/coral/lessons/lyndsey2.html
 
Food Chains I
http://www.geog.ouc.bc.ca/physgeog/contents/4e.html
 
Food Chains II
http://www.ultranet.com/~jkimball/BiologyPages/F/FoodChains.html
 
Food Chains III — Flow of energy. Elementary
http://www.ftexploring.com/me/me2.html
 
Food Chains IV — Facts, information, diagrams
http://www.arcytech.org/java/population/facts_foodchain.html
 
Food Chains and Energy Flow — Info, charts, diagrams
http://users.rcn.com/jkimball.ma.ultranet/BiologyPages/F/FoodChains.html
 
Food Chains and Energy Pyramids:
http://www.ftexploring.com/me/pyramid.html
 
Food Chain as a System
http://www.physicalgeography.net/fundamentals/4e.htm
 
Food Chains, Trophic Levels, Productivity, Energy Flow,
http://www.biologie.uni-hamburg.de/b-online/e54/54c.htm
 
Food Chains, Webs, Cycles
http://www.marietta.edu/~biol/102/ecosystem.html#Energyflowthroughtheecosystem3
 
Food Pyramids
http://www.geog.ouc.bc.ca/physgeog/contents/9o.html
 
Food Pyramids, Webs — Trophic levels
http://www.geog.ouc.bc.ca/physgeog/contents/9o.html
 
Food Web: Chaparral I
http://naturalsciences.sdsu.edu/classes/lab2.3/foodweb.gif 

Food Web: Chaparral II
http://www.lalc.k12.ca.us/uclasp/urban_science/food_chains/breeding.htm
 
Food Web: Desert I
http://curriculum.calstatela.edu/courses/builders/lessons/less/biomes/desert/hot-desert-chain.html
 
Food Web: Desert II
http://www.stoller-eser.com/trial/colorbook/food_web.html
 
Food Web: Desert, Hot
http://curriculum.calstatela.edu/courses/builders/lessons/less/biomes/desert/hot-desert-chain.html
 
Food Web: Marine
http://www3.umassd.edu/Public/Exhibit/DES300/game/eatandbe.htm
 
Food Web: Ocean
http://curriculum.calstatela.edu/courses/builders/lessons/less/biomes/desert/cold-desweb.html
 
Food Web and Photosynthesis Links
http://www.ftexploring.com/photolinks.html
 
Food Webs
http://www.geog.ouc.bc.ca/physgeog/contents/9o.html
 
Food Web: Taiga
http://curriculum.calstatela.edu/courses/builders/lessons/less/biomes/conifers/conifweb.html
 
Food Web: Temperate Rain Forest
http://curriculum.calstatela.edu/courses/builders/lessons/less/biomes/rainforest/temp_rain/tempweb.html
 
Food Web:Tundra Biome I
http://www.itk.ca/english/itk/departments/enviro/ncp/terrestrial.htm

Food Web:Tundra Biome II
http://curriculum.calstatela.edu/courses/builders/lessons/less/biomes/tundra/tundraweb.htm
 
Food Web: Wetland
http://www.natureillinois.org/natwrks1.htm
 
Nitrogen Fertilizer — Importance, usage information Pyramids
http://pmep.cce.cornell.edu/facts-slides-self/facts/nit-el-grw89.html
 
Nitrogen Cycle I
http://shell.pubnix.net/~spond/filter/nitrogen.html
 
Nitrogen Cycle II — Extensive info, diagrams, internal links
http://www.ultranet.com/~jkimball/BiologyPages/N/NitrogenCycle.html
 
Nitrogen Cycle: Nitrogen Fixation I
http://helios.bto.ed.ac.uk/bto/microbes/nitrogen.htm

Nitrogen Cycle: Nitrogen Fixation II — Global Investment and Research Needs
http://www.nap.edu/readingroom/books/bnf/chapter1.html
 
Nitrogen Cycle: Nitrogen Fixation III — Role of nitrogen in the biosphere
http://helios.bto.ed.ac.uk/bto/microbes/nitrogen.htm
 
Nitrogen Fixation I — Plant-bacterial interactions
http://www.sci.wsu.edu/mbio/Kahn
 
Nitrogen Fixation II — Rhizobia
http://users.rcn.com/jkimball.ma.ultranet/BiologyPages/N/NitrogenFixation.html
 
Nitrogen Fixation III — Includes Nitrogen cycle, pathways, and bacterial species http://helios.bto.ed.ac.uk/bto/microbes/nitrogen.htm
 
Nitrogen: The Essential Element — Benefits, problems: plants, soil, groundwater
http://pmep.cce.cornell.edu/facts-slides-self/facts/nit-el-grw89.html
 
Nutrient Cycles — 6 cycles
http://www.biologie.uni-hamburg.de/b-online/e54/54d.htm
 
Phosphorus Cycle I
http://www.sdsmt.edu/online-courses/geology/geol299/lect29.htm
 
Phosphorus Cycle II
http://soils1.cses.vt.edu/ch/biol_4684/Cycles/Pcycle.html
 
Primary Productivity I — Lab
http://www.racerocks.com/biology/plants/productivity/productivity.htm
 
Primary Productivity II — Lab
http://www.misd.wednet.edu/~Mike_VanOrden/es/primaryproductivity.pdf
 
Producers, Consumers and Decomposers
http://www.chs.k12.nf.ca/science/b3201/WebCT-Copy/units/unit1-05.htm
 
Pyramid of Biomass I — Defined, Illustration
http://www.bbc.co.uk/schools/gcsebitesize/biology/ecology/foodchainsandwebsrev4.shtml
 
Pyramid of Biomass II
http://users.rcn.com/jkimball.ma.ultranet/BiologyPages/F/FoodChains.html#The_Pyramid_of_Biomass
 
Pyramid: Biomass, Energy, Numbers
http://users.rcn.com/jkimball.ma.ultranet/BiologyPages/F/FoodChains.html
 
Pyramid of Energy I — Info, diagram
http://users.rcn.com/jkimball.ma.ultranet/BiologyPages/F/FoodChains.html#EnergyPyramid
 
Pyramid: Energy II
http://personal.bgsu.edu/~svessey/biology-101/graphics/image3.gif

Pyramid of Numbers I
http://users.rcn.com/jkimball.ma.ultranet/BiologyPages/F/FoodChains.html

Pyramid of Numbers II
http://www.agen.ufl.edu/~chyn/age2062/lect/lect_28/40_10.GIF
 
Pyramid: Productivity
http://www.bio.miami.edu/dana/160/pyramid.gif
 
Sulfur Cycle I — Diagram
http://www.alken-murray.com/H2SREM7.HTM

Sulfur Cycle II — Information. Simple diagram
http://soils1.cses.vt.edu/ch/biol_4684/Cycles/Scycle.html
 
Trophic Pyramids and Food Webs
http://www.physicalgeography.net/fundamentals/9o.html
 
Water Cycle I
http://www-k12.atmos.washington.edu/k12/pilot/water_cycle/grabber2.html
 
Water Cycle II
http://www.geog.ouc.bc.ca/physgeog/contents/8b.html
 
 
Ecological Concerns, Solutions
Acid Rain I
http://users.rcn.com/jkimball.ma.ultranet/BiologyPages/A/AcidRain.html
 
Acid Rain II
http://www.epa.gov/airmarkets/acidrain/
 
Acid Rain III — Cause, effect. Links
http://www.epa.gov/airmarkets/acidrain/
 
Acid Rain Program Home Page
http://www.nbii.gov/education/aquatic.html
 
Air Pollution
http://www.lbl.gov/Education/ELSI/pollution-main.html
 
Air Pollution: Problem
http://www.umist.ac.uk/departments/physics/postgraduate/postgradnews%20PDF/pgp
 
Australia: Endangered Species
http://www.johnwiley.com.au/school/jacatlas/worksheets/JA5Wksheet0004.pdf
 
Australia: Threatened Species & Ecological Communities
http://www.ea.gov.au/biodiversity/threatened/
 
Bioaccumulation — Toxicology information
http://ace.ace.orst.edu/info/extoxnet/tibs/bioaccum.htm
 
Biological Pest Control — Hyperlinks
http://www.nysaes.cornell.edu/ent/biocontrol/
 
Amphibian Declines and Deformities — NBII
http://www.frogweb.gov/
 
Biological Magnification in Pyramids
http://www.marietta.edu/~biol/102/ecosystem.html#Biologicalmagnification6
 
Biological Meltdown: Endangered Species — Biodiversity threat
http://www.newint.org/issue288/bio.htm
 
Composting — Benefits of, EPA
http://www.epa.gov/compost/
 
Conservation Genetics: Application
http://gslc.genetics.utah.edu/units/basics/conservation/when.cfm

Conservation Genetics: Defined — Elementary
http://gslc.genetics.utah.edu/units/basics/conservation/

Conservation Genetics: Management — Elementary
http://gslc.genetics.utah.edu/units/basics/conservation/done.cfm
 
DDT I
http://www.epa.gov/history/topics/ddt/03.htm
 
DDT II — Banned insecticide
http://www.chem.ox.ac.uk/mom/ddt/ddt.html
 
Deforestation
http://www.iitap.iastate.edu/gcp/issues/forestry/forestry.html
 
Dioxin
http://users.rcn.com/jkimball.ma.ultranet/BiologyPages/D/Dioxin.html
 
Ecolocical Ethics— Extensive topical links
http://www.molloy.edu/academic/philosophy/sophia/ethics/environment.htm

Ecospheric Ethics — Extensive topical links
http://www.ecospherics.net/ 
 
El Nino, La Nina and Climate Info — Technical info with hyperlinks
http://www.pmel.noaa.gov/toga-tao/el-nino/1997.html
 
El Nino Impacts — Menu
http://www.pmel.noaa.gov/toga-tao/el-nino/impacts.html
 
El Nino, What is it? — Defined, explained
http://www.pmel.noaa.gov/toga-tao/el-nino-story.html
 
Endangered Plants: Images
http://eelink.net/EndSpp/ESimages/ESplants.html
 
Endangered Species I — The rarest endangered species  information around 
http://www.endangeredspecie.com/
 
Endangered Species II
http://conbio.net/vl/
 
Endangered and Extinct Species — US List by hyperlinked locations
http://eelink.net/EndSpp.old.bak/ES.lists.html
 
Endangered Species List: Criteria
http://www.wcmc.org.uk/species/animals/criteria.htm#EN
 
Energy and Environmental Issues — Many hyperlinks including solar energy)
http://zebu.uoregon.edu/energy.html
 
Environmental Health — Defined, discussion
http://www.agius.com/hew/resource/envhlth.htm
 
Environmental Protection Agency — Navigation page
http://www.epa.gov/epahome/topics.html
 
Environmental Protection Agency — Hyperlinked topics
http://www.epa.gov/epahome/browse.htm
 
Environmental Issues/Problems — John Wiley & Sons. (13/30 pages accessible)
http://www.wiley.com/college/environet/CHAPTER.HTM
 
Environmental Maintenance — Several hyperlinks concerning many pollutants
http://www.cjnetworks.com/~sccdistrict/shw_env/index.htm
 
Extinct and Endangered Species
http://eelink.net/EndSpp.old.bak/ES.lists.html
 
Food, Land, Population and the U.S. Economy
http://dieoff.com/page55.htm
 
Forests — Value, depletion of
http://www.ucsusa.org/global_environment/biodiversity/index.cfm
 
Global Change Issues — Archived links
http://www.ucsusa.org/global_environment/archive/index.cfm 

Global Warming I — Information
http://www.ucsusa.org/global_environment/global_warming/index.cfm
 
Global Warming II
http://lwf.ncdc.noaa.gov/oa/climate/globalwarming.html
 
Global Warming III — EPA information, links
http://yosemite.epa.gov/oar/globalwarming.nsf/content/index.html
 
Global Warming: Arguments Against — Links to articles
http://www.visitandlearn.co.uk/factfiles/global7.asp
 
Global Warming: CO2 Information — FAQ's and answers. Linked references
http://cdiac.esd.ornl.gov/pns/faq.html
 
Global Warming: Fact or Fiction?
http://webwatchers.nsta.org/guides/lesson_plan_detail.asp?lesson_plan_ID=68&grade_band=3 
 
Global Warming: New Ice Age?
http://www.commondreams.org/views04/0130-11.htm
 
Global Warming: What does it portend
http://www.cato.org/pubs/regulation/regv23n3/michaels.pdf
 
Grassland Conservation
http://www.kentishstour.org.uk/conserving_grasslands.htm
 
Greenhouse Effect I — Carbon dioxide, methane and other gases
http://liftoff.msfc.nasa.gov/academy/space/greenhouse.html
 
Greenhouse Effect II  — 5 appropriate hyperlinks
http://royal.okanagan.bc.ca/mpidwirn/atmosphereandclimate/greenhouse.html#d
 
Greenhouse Effect vs. Global Warming — Discussion of the greenhouse effect
http://www.ems.psu.edu/~fraser/Bad/BadGreenhouse.html
 
Ground Water and Drinking Water — EPA information
http://www.epa.gov/ogwdw/
 
Human Population Growth — Hyperlinks
http://darwin.bio.uci.edu/~sustain/bio65/lec16/b65lec16.htm#DecliningpercapitaResources and Productivity
 
Invasive Species I — Problem
http://www.issg.org/
 
Invasive Species II — Global concern
http://www.iucn.org/info_and_news/press/mtgiasgvapaper.pdf

Invasive Species III — US
http://www.invasivespecies.gov/
 
Invasive Species IV — Information
http://www.ucsusa.org/global_environment/invasive_species/index.cfm
 
Invasive Species: Loosestrife — Extensive information, problems.
http://www.invasivespecies.gov/profiles/purplstrf.shtml
 
Invasive Species: Loosestrife — Extensive information, problems, illustrations
http://nature.org/initiatives/invasivespecies/features/art8863.html
 
Loosestrife: Biological controls
http://www.inhs.uiuc.edu/chf/pub/surveyreports/sep-oct96/purple.html
 
Loosestrife: Identification and Control
http://www.ext.nodak.edu/extpubs/plantsci/weeds/w1132w.htm
 
Nitrogen: The Essential Element — Benefits, problems: plants, soil, groundwater
http://pmep.cce.cornell.edu/facts-slides-self/facts/nit-el-grw89.html
 
Noise and Hearing Loss
http://deafness.about.com/msubnois.htm?iam=ma
 
Noise Pollution I
http://www.nonoise.org/
 
Noise Pollution II
http://www.epa.nsw.gov.au/soe/97/ch1/15.htm
 
Noise Pollution Clearing House
http://www.nonoise.org/
 
Ocean Pollution I
http://seawifs.gsfc.nasa.gov/OCEAN_PLANET/HTML/peril_pollution1.html
 
Ocean Pollution II
http://daac.gsfc.nasa.gov/CAMPAIGN_DOCS/OCDST/classic_scenes/08_classics_pollution.html
 
Oil Spill in a Test Tube
http://www.accessexcellence.org/AE/AEC/AEF/1994/brown_oil.html
 
Ozone Depletion — EPA, extensive hyperlinks
http://www.epa.gov/docs/ozone/index.html
 
Ozone Depletion: Projections 
http://www.epa.nsw.gov.au/soe/97/ch1/2_5.htm
 
Ozone: Internet Lesson Plan
http://www.gsu.edu/~mstnrhx/Lessons/plan23.htm
 
Ozone Levels: Stratosphere
http://www.cpc.noaa.gov/products/stratosphere/polar/polar.html
 
Ozone measurement: Dobson Spectrometer
http://toms.gsfc.nasa.gov/teacher/basics/dobson.html  
 
Ozone Problems
http://www.ultranet.com/~jkimball/BiologyPages/O/Ozone.html
 
Pesticide Information — EPA
http://www.epa.gov/pesticides/
 
Pesticides
http://www.beyondpesticides.org/
 
Population Growth: Human
http://darwin.bio.uci.edu/~sustain/bio65/lec16/b65lec16.htm
 
Population Growth: Doubling Time — Information, chart, activities (72/% rule)
http://iserver.saddleback.cc.ca.us/AP/sbs/econ/mathecon/rule721.htm
 
Population Growth: World Profile
http://www.census.gov/ipc/www/wp98001.html
 
Radioactive Waste Resource Management — Resources, hyperlinks
http://www.radwaste.org/
 
Rain Forest Action Network
http://www.ran.org
 
Rainforest Alliance Home Page
http://www.rainforest-alliance.org/
 
Recycling — Benefits of (EPA)
http://www.epa.gov/epaoswer/non-hw/muncpl/reduce.htm#recycle
 
Red Tide I
http://www.marinelab.sarasota.fl.us/~mhenry/WREDTIDE.phtml

Red Tide II
http://museum.gov.ns.ca/poison/redtide.htm
 
Red Tides and Harmful Algal Blooms I — Hyperlinks
http://www.mote.org/~mhenry/rtlinks.phtml
 
Red Tides and Hrrmful Algal Blooms II
http://www.whoi.edu/redtide/
 
Road Salt Damage
http://www.umassgreeninfo.org/fact_sheets/plant_culture/salt_damage.pdf
 
Road Salt Damage: Trees I
http://www.nysipm.cornell.edu/publications/comm.news.nov98/thirst.html
 
Road Salt Damage: Trees II — Factsheet
http://www.gardenplans.com/tip1904.html
 
Road Salt Effects on Waterways
thttp://creekconnections.allegheny.edu/Newsletters/WinterSeasonWaterways.html
 
Smog: Coalition for Clean Air
http://www.coalitionforcleanair.org/cca/toxins.htm
 
Tropical Rainforest Forest — Courses, intern programs
http://www.saverfn.org/
 
Starlings — Invasive species, US
http://www.saburchill.com/hfns02/chapters/chap022bfp.html
 
Toxic Substances Fact Sheets — Hyperlinked alphabetic listings
http://www.atsdr.cdc.gov/toxfaq.html
 
Stream Quality: Biological Assessment — Lab exercise
http://www.zoo.utoronto.ca/able/volumes/vol-12/5-ball/5-ball.htm
 
Wetlands: Loss and Degradation
http://www.ramsar.org/about_wetland_loss.htm
 
Whooping Cranes — An endangered species
http://raysweb.net/specialplaces/pages/crane.html
 
 
Gaia Hypothesis
Gaia Hypothesis I — James Lovelock's proposal
http://erg.ucd.ie/arupa/references/gaia.html

Gaia Hypothesis II — Extensive discussion 
http://www.oceansonline.com/gaiaho.htm
 
Gaia Theory — Implications, critique, internal links
http://www.lancs.ac.uk/users/philosophy/mave/guide/gaiath~1.htm
 
Gaia Theory: Science of the Living Earth
http://www.gaianet.fsbusiness.co.uk/gaiatheory.html
 
 
Unit Photos, Illustrations, GIF's
Carbon Cycle I
http://www.astronomynotes.com/solarsys/carbon-cycle.gif
 
Carbon Cycle II
http://www.stanford.edu/~rachelm/diagrams/geology/geo-33.01(carbon%20cycle).jpg
 
Carbon Cycle III
http://www.fed.cuhk.edu.hk/~johnson/misconceptions/concept_map/carbon_cycle.gif
 
Food Web — Color coded by trophic levels
http://wwwrcamnl.wr.usgs.gov/isoig/projects/fingernails/images/bigFIG1-Foodweb
 
Food Web: Aquatic/Terrestrial
http://www.mindfully.org/Food/Food-Web.gif
 
Food Web: Desert
http://caplter.asu.edu/explorers/images/foodweb.gif
 
Food Web: Marine
http://www.cordis.lu/inco2/icons/pauly1.gif
 
Food Web: Marine Habitat
http://www.absc.usgs.gov/research/seabird_foragefish/marinehabitat/images/Food
 
Food Web: Sagebrush/Steepe Ecosystem
http://www.stoller-eser.com/trial/colorbook/Food-Web.gif
 
Food Web: Soil
http://www.soils.umn.edu/academics/classes/soil2125/img/9slfdwb.jpg
 
Food Web: Soil — Grassland
http://www.commonsensecare.com/soilfoodweb.html
 
Food Web: Temperate Deciduous Forest
http://www.agen.ufl.edu/~chyn/age2062/lect/lect_28/40_07.GIF
 
Food Web: Temperate Rain Forest — More like a series of food chains
http://www.world-builders.org/lessons/less/biomes/rainforest/temp_rain/tempgif
 
Food Web: Tidal Flats
http://www.cbbep.org/molliebeattie/graphics/food-web.gif
 
Oxygen Cycle I
http://jan.ucc.nau.edu/~doetqp-p/courses/env440/env440_2/lectures/lec31/fig31
 
Oxygen Cycle II
http://www.biologie.uni-hamburg.de/b-online/ge54/08.gif
 
Oxygen Cycle III
http://pas.byu.edu/biol150/pres/geochem/sld010.htm
 
Nitrogen Cycle I
http://www.marietta.edu/~biol/102/ncycle.gif 
 
Nitrogen Cycle II
http://msucares.com/crops/soils/images/nitrogen.gif
 
Nitrogen Cycle III
http://library.tedankara.k12.tr/chemistry/vol2/chemenv/z184.jpg
 
Phosphorus Cycle I
http://msucares.com/crops/soils/images/phosphorus.gif
 
Phosphorus Cycle II 
http://www.env.go.jp/en/w-paper/1995/eae240143000001.gif
 
Pyramid s Biomass and Energy— Illustrations
http://www.acad.carleton.edu/curricular/BIOL/classes/bio190/slides/odumfig2.jpg
 
Pyramid: Energy
http://personal.bgsu.edu/~svessey/biology-101/graphics/image3.gif

Pyramid: Numbers
http://www.agen.ufl.edu/~chyn/age2062/lect/lect_28/40_10.GIF

Pyramid: Productivity
http://www.bio.miami.edu/dana/160/pyramid.gif
 
Sulfur Cycle I
http://www.alken-murray.com/H2SREM7.HTM
 
Water Cycle I 
http://www.unep.org/vitalwater/images/03-water-cycle.jpg
 
Water Cycle II 
http://ridge.icu.ac.jp/gen-ed/ecosystem-jpgs/water-cycle.jpg
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