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| | Habitat destruction is the largest of the many threats to biodiversity |
 | | Habitat is destroyed mainly for agriculture and forestry | | | Habitat destruction and conversion for agricultural and forestry activities — and the associated degradation and fragmentation — are the biggest problems. | | | The expansion of agricultural activity has led to the destruction of huge areas of natural habitats, including forests, grasslands and wetlands, in nearly all regions of the world. |
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http://www.birdlife.org/action/science/sowb/pressure/30.html
(634 words)
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| | WorldBryo_Red_List_Introduction |
| | Threat: Habitat is threatened by the expansion of agriculture and grazing. | | | Habitat: Tree trunks, shaded rocks and humid soil in laurel forsts. | | | Threat: Habitat threatened by the recent logging and clearing of Laurus forest for agriculture and pasture. |
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http://www.dbs.nus.edu.sg/lab/crypto-lab/WorldBryo.htm
(6415 words)
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| | Habitat destruction - AskTheBrain.com |
| | Habitat destruction and reductions in food supply lead to further declines in bird populations. | | | Habitat destruction, invasive alien species, overexploitation and pollution are powerful threats to the biodiversity of freshwater ecosystems. | | | After habitat destruction, the spread of alien invasive species in our countryside is one of the most pervasive threats to our native plants. |
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http://www.askthebrain.com/destruction_habitat-.html
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| | HCPB-Publication Information |
| | Reasons for the decline: Destruction of grassland habitat in northeastern California by agriculture and overgrazing combined with possible over_hunting were probably the main factors leading to the disappearance of this species. | | | Reasons for the decline: Although destruction of riparian habitat probably is partly responsible for the decline, the present critical status of this species in California is almost certainly due to brood parasitism by the Brown_headed Cowbird. | | | Reasons for the decline: Conversion of grasslands and pasturelands to agriculture and destruction of ground squirrel colonies have been the main factors causing the decline of the Burrowing Owl population (Zarn 1974b). |
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http://www.dfg.ca.gov/hcpb/info/bird_ssc.shtml
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| | Effects: Habitat Degradation, Loss, and Fragmentation |
| | One consequence of habitat fragmentation is an increase in the amount of edge (boundaries between different habitats), such as that between a forest and a road or a lawn and a wetland. | | | Habitat loss is the outright destruction of habitat, such as filling a wetland or channelizing a section of stream. | | | Urban growth may reduce habitat to residual patches that are too small to meet the ecological requirements of animals, birds, and plants, especially those which require large tracts of uninterrupted habitat or which are sensitive to human intrusion. |
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http://chesapeake.towson.edu/landscape/impervious/all_habitat.asp
(539 words)
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| | Biodiversity Conservation Alliance |
| | Continued habitat destruction and degradation due to domestic livestock grazing, logging, road construction, pesticide and herbicide application, mining, spring development, groundwater extraction, and recreational activities threatens to further destroy, modify, and/or curtail the habitat and range of the species. | | | Native to undisturbed forest and riparian habitats primarily in the northern Black Hills, the Black Hills mountainsnail is most often associated with springs, mature (i.e., old growth) forest, and plant communities that are associated with moist areas. | | | Because colonies of Black Hills mountainsnail have been reduced in size and extent and have become isolated due in part to habitat destruction and degradation, disease and predation may now pose a much greater risk to the survival of the species. |
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http://www.voiceforthewild.org/bhnf/pubs/snail_exesum.html
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| | EPA > Bird Conservation > Basics of Bird Conservation in the U.S. |
| | The fertility of the tundra soil, the local mounded topography, local wetland hydrology, nutrient value of the plants, and the structure of the plants are all characteristics of the habitat that contribute to Dunlin nesting habitat quality. | | | Habitat losses have especially affected forest and grassland-nesting birds in the U.S. For many species, declines are compounded by losses of wetland and riparian zone migratory stop-over locations. | | | In addition to changes in breeding and stop-over habitats in North America, migratory birds have been harmed by habitat changes to their wintering grounds outside the U.S. In particular, rainforest destruction in Central and South America may be an important factor in the decline of some U.S. nesting species. |
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http://www.epa.gov/owow/birds/basics.html
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| | Piping Plover Atlantic Coast Population Recovery Plan: Reasons for Listing and Continuing Threats |
| | Habitat availability for nest site selection is decreased where blowouts or gaps in the foredune are "plugged," increasing the foredune slope. | | | Chicks frequently move between the upper berm or foredune and feeding habitats in the wrack line and intertidal zone. | | | The wide, flat, sparsely vegetated barrier beaches preferred by the piping plover are an unstable habitat, dependent on natural forces for renewal and susceptible to degradation by development and shoreline stabilization efforts. |
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http://pipingplover.fws.gov/recplan/threats.html
(3951 words)
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| | Endangered Plants: Images |
| | Status cause: Habitat loss or degradation such as contamination and filling of sink holes, grazing and trampling by livestock, human use of habitat for logging and road building, misapplication of pesticides, and collection of the species. | | | Status cause: Habitat loss due to wetland drainage, agricultural use of habitat and siltation. | | | Status cause: Habitat modification from forestry and agricultural land use. |
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http://www.eelink.net/EndSpp/ESimages/ESplants.html
(393 words)
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| | AmphibiaWeb |
| | For example, habitat destruction is most obvious when amphibian habitat is drained, filled or cut and then converted into parking lots, housing developments or agricultural developments etc. A study by Davidson et al. | | | The general public often perceives amphibian habitat as being confined to wetlands and other aquatic environments, but surprisingly, a large number of species are entirely terrestrial (ex. | | | Amphibians are found in a great variety of ecosystems from tropical rainforests to barren deserts (Stebbins and Cohen 1995). |
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http://elib.cs.berkeley.edu/aw/declines/HabFrag.html
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| | habitat destruction |
| | Natural areas, wetlands and aquatic habitats are continually lost to agriculture, development, roads and other activities. |
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http://www.ptrf.org/destruction.htm
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| | Conservation biology: Habitat Destruction |
| | Species rich areas such as the rain forests, tropical deciduous forests, grasslands, wetlands and aquatic habitats, mangroves and coral reefs are currently being destroyed at a rapid rate. | | | In very poor countries, people practice shifting cultivation and move from one fertile land to another leaving the previous land infertile and overused. | | | If the human population is slowed down and natural resources are used wisely, most of our species will be saved. |
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http://consbiominasso.blogspot.com/2005/01/habitat-destruction.html
(499 words)
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| | Modern Causes of Species Extinctions: Habitat Destruction |
| | Habitat damage, especially the conversion of forested land to agriculture (and, often, subsequent abandonment as marginal land), has a long human history. | | | The more specific these needs and localized the habitat, the greater the vulnerability of species to loss of habitat to agricultural land, livestock, roads and cities. | | | All species have specific food and habitat needs. |
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http://www-personal.umich.edu/~dallan/nre220/outline6.htm
(512 words)
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| | Berkshire Taconic :: Conservation issues :: Fragmentation and Destruction of Habitat |
| | Habitat fragmentation and destruction occurs when a disturbance significantly alters the ecological makeup of a natural community, so that it can no longer sustain its plants and animals. | | | To a lesser degree, disturbance is caused by inappropriate logging practices, gravel, mining, or wetlands filling. | | | These changes have also caused the loss of the rural lifestyles that existed on the farms and forestland througout much of the Northeast. |
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http://www.lastgreatplaces.com/berkshire/issues/art6588.html
(966 words)
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| | Wetlands as Bird Habitat |
| | This wetland in California is habitat for migrating snow geese. | | | As a result, it is not possible to accurately determine the effects of habitat destruction on long-term wetland bird populations. | | | These threats, combined with habitat destruction, have a net negative effect on the population of wetland birds. |
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http://water.usgs.gov/nwsum/WSP2425/birdhabitat.html
(3548 words)
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| | OTTERNET.COM - Habitat: Europe |
| | Habitat destruction, loss of food due to lack of food, traps set for beavers | | | Licenses may be given to kill otters at fish farms. | | | Major Habitat destruction, Intensive fish farming with illegal |
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http://www.otternet.com/habitat/europe.htm
(241 words)
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| | Causes of Endangerment |
| | The loss of microbes in soils that formerly supported tropical forests, the extinction of fish and various aquatic species in polluted habitats, and changes in global climate brought about by the release of greenhouse gases are all results of human activity. | | | They are well adapted to their local environment and are accustomed to the presence of other native species within the same general habitat. | | | This is because the soils in which they grow are lacking in nutrients. |
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http://www.endangeredspecie.com/causes_of_endangerment.htm
(898 words)
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| | Physical Alterations and Destruction of Habitat |
| | Large vertebrate grazers such as green turtles, dugongs, and manatees rely on seagrass beds for food and habitat; some of these species are threatened or endangered. | | | Some marshes have expanded over previously subtidal habitats by trapping sediments, colonizing sediments deposited by severe storms, or colonizing sediments that have been lifted into the intertidal zone by rising coastlines. | | | Spawning grounds, nurseries and feeding grounds of major living marine resources of crucial importance to world food security are being destroyed. |
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http://www.gpa.unep.org/pollute/PADH/padh1.htm
(1735 words)
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| | Habitat |
| | Habitat destruction destroys both food sources and nesting sites. | | | As is the case with many endangered species, habitat destruction is the primary reason that the Gold Capped conure is endangered. | | | Unfortunately, the Gold Capped conure has not been able to do so. |
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http://www.webtrek.com/~pkg/habitat.htm
(77 words)
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| | Human Habitat Destruction |
| | In order to survive, the Florida panther needs large blocks of forested lands, but between 1936 and 1987, one third of this essential land was cleared for agricultural reasons and residential development. | | | Privately owned low intensity agricultural lands such as cattle grazing fields are suitable for panther use, if human intrusion is low. | | | If the panthers had land that they could live on, and reproduce on, disease and minimal human intrusion could be overcome. |
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http://plaza.ufl.edu/wwtufl55/destruct.html
(199 words)
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| | Save Our Frogs! Amphibian Threats |
| | These factors probably include such things as destruction of natural habitat, increases in ultra-violet radiation (and the decrease of the Ozone layer), pesticides, industrial pollution, acid rain, changes in temperature, introduction of new predators or competitors into breeding areas, diseases, and even just natural population fluctuations. | | | Activities such as logging of forests and drainage of wetlands has obvious and pretty bad effects on amphibians: they get kicked out of their homes. | | | Increases in ultra-violet (UV) radiation as a result of the earth's thinning ozone layer may also have lethal affects on amphibians. |
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http://allaboutfrogs.org/info/save/threats.html
(478 words)
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| | Endangered Mollusks: Images |
| | Status cause: Habitat destruction and degraded water quality due to impoundments, channelization, agricultural practices, inceasing barge traffic and siltation, and reduction of water flow. | | | Status cause: Habitat destruction and degraded water quality due to impoundments, channelization, agricultural practices, increasing barge traffic and siltation, and reduction of water flow. |
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http://www.eelink.net/EndSpp/ESimages/ESmollusks.html
(522 words)
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| | NOVA Online Crocodiles Who's Who of Crocodilians |
| | Habitat: Almost all natural open wetland and riverine habitats | | | Conservation: Recently recovered from population depletion, today it benefits from low human population and large areas of wetland habitat. | | | Adults live on frogs, snakes, small mammals, and birds; the largest ones dine on deer and buffalo. |
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http://www.pbs.org/wgbh/nova/crocs/whos/who-nf.html
(805 words)
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| | Friends of Washoe: Free-Living Chimpanzees - Habitat Destruction |
| | With the continual rise in human population comes increasing demand for land for living and agriculture; local agricultural activities are encroaching ever deeper into even protected areas of chimpanzee habitats. | | | In addition to the direct loss of habitat to logging, lumber companies build large roads into once pristine forest, dividing up chimpanzee territory, separating communities, and, most significantly, allowing easy access to bushmeat traders. | | | Logging clears the land for expanding agriculture but also for economic gain; the exotic woods of the equatorial forests garner high prices in lumber markets around the world. |
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http://www.friendsofwashoe.org/habitat_destruction.shtml
(311 words)
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| | International Swallowtails - Efforts to protect seven swallowtail butterflies from habitat destruction and over ... |
| | The Southern tailed birdwing (Troides [Ornithoptera] meridionalis) is endangered by the logging of its natural habitat and the uncontrolled development of plantations in Indonesia and Papua New Guinea. | | | The Jamaican kite (Eurytides marcellinus) is threatened with extinction due to its limited range, restricted distribution of its food plant, and intense agricultural development near Kingston, Jamaica. | | | The Harris' Mimic Swallowtail (Eurytides lysithous harrisianus) has been eliminated by habitat destruction from all but one known site in southeastern Brazil, which itself is now threatened by development. |
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http://www.xerces.org/Endangered/International_Swallowtails.htm
(428 words)
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| | habitat |
| | Deforestation of rainforests is extremely damaging because of the very high biodiversity in these habitats. | | | Rainforests account for only 7% of the Earth's surface area but contain 50% of the world's species. | | | Habitat destruction is also the main cause in the decline of biological diversity. |
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http://www.geocities.com/evirosite24/habitat.html
(417 words)
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| | LookSmart - Search results for "shell biological habitat" |
| | agricultural land or wildlife habitat to "agricultural stripmining... | | | harvesting, combined with habitat destruction, has made the... | | | Biological factors influencing suitability of settlement habitat may include proximity to larval supply, shelter availability as refuge from predators, and food availability. |
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http://www.looksmart.com/r_search?l&pin=011121x2de76f8e168debe7bd1&key=shell+biological+habitat&skip=150&se=0,0,0,300&search=us302562
(437 words)
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| | Habitat Destruction |
| | The cause is not a meteorite but the heavy footprint of a new dominant species on the planet, cutting down forests, fracturing habitats into ever smaller pieces, and deliberately or unwittingly transporting alien species to every corner of the globe. | | | From large mammals to tiny insects, species are becoming extinct at a rate unprecedented since the demise of the dinosaurs 64 million years ago. | | | Ecosystems will be discussed in a later lecture. |
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http://www.aos.wisc.edu/~aos472/introess/tsld009.htm
(72 words)
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| | Habitat Destruction |
| | Equally serious, at local and regional levels, the physical degradation of critical marine and wetland habitats and the pollution caused by urbanization and industrialization continue to impact marine systems. | | | These wetland forests may be disappearing even more quickly than inland forests. | | | The destruction of the Ozone layer by CFCs, for example, could impact marine ecosystems, particularly in polar regions. |
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http://www.greenpeace.org/india/campaigns/save-our-seas/threats/habitat-destruction
(517 words)
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| | Habitat destruction and climate change |
| | On the other hand, climate is thought to be the most important factor allowing wider countryside species to expand their distributions. | | | They are relatively mobile species and have been able to move through the modern landscape, capitalising on recent favourable weather. | | | the abandonment of coppicing and massive changes in livestock farming, with marginal land in the lowlands being abandoned and that in the uplands being much more heavily grazed), and the fragmentation and isolation of habitats. |
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http://www.butterfly-conservation.org/bnm/atlas/habitat.html
(283 words)
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| | Pickens County |
| | Shallow water (0.1-0.5 m) in small to medium warm water creeks (1-15 m wide) with predominantly rocky bottoms. | | | Major factor in initial decline was lowered reproductive success following use of DDT. | | | Usually found in medium and large cool water creeks or small rivers (15-30 m wide) with moderate or high gradients and rocky bottoms. |
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http://www.fws.gov/athens/endangered/counties/pickens_county.html
(254 words)
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| | tropical deforestation and habitat destruction |
| | Habitat loss takes several forms: outright loss of areas used by wild species; degradation, for example, from vegetation removal and erosion, which deprive native species of food, shelter, and breeding areas; and fragmentation, when native species are squeezed onto small patches of undisturbed land surrounded by areas cleared for agriculture and other purposes. | | | While much attention has been paid to deforestation and other forms of habitat destruction, few attempts have been made to measure the loss of habitat through fragmentation and edge effect. | | | A 1993 study of deforestation and fragmentation in the Brazilian Amazon basin between 1978 and 1988 found that of total habitat affected, only 39 percent could be attributed to outright forest conversion; the rest occurred through fragmentation and edge effect. |
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http://www.cotf.edu/ete/modules/troppois/tpdeforestation.html
(215 words)
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| | 'Cudology 101 |
| | Florida Bay's problems can be traced back to high inputs of nutrients from agriculture in south Florida and halting of freshwater inputs from the Everglades (the result of wholesale and terribly destructive damming and water diversion by the US Army Corps of Engineers decades ago). | | | Gulf of Mexico with new supplies of fish life, Florida Bay is now considered to be largely a 'dead zone.' High nutrient levels, in concert with the Bay's shallow maximum depths, have resulted in | | | In many areas where reefs survive, they are on the brink of destruction thanks to the efforts of coral miners, dynamite fishers, and those who collect exotic fishes for the aquarium and restaurant trade using cyanide or other poisons. |
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http://www.uga.edu/cuda/bozos.html
(965 words)
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| | Habitat destruction -- Facts, Info, and Encyclopedia article |
| | Generally this results in a reduction in (The diversity of plant and animal life in a particular habitat (or in the world as a whole)) biodiversity. | | | Habitat destruction is a process of (Click link for more info and facts about land use) land use change in which one (The type of environment in which an organism or group normally lives or occurs) habitat-type is removed and replaced with some other habitat-type. | | | In the process of land-use change, (A living organism lacking the power of locomotion) plants and (A living organism characterized by voluntary movement) animals which previously used the site are displaced or destroyed. |
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http://www.absoluteastronomy.com/encyclopedia/h/ha/habitat_destruction.htm
(131 words)
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| | Habitat Destruction - Global Public Media |
| | Topics: Fisheries (6 December 2003 Habitat Destruction Food Water Resource Depletion) | | | Topics: Water (6 November 2003 Habitat Destruction Resource Depletion) | | | Topics: Pollution, toxins, and plastics (23 September 2004 Habitat Destruction Species Extinction) |
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http://www.globalpublicmedia.com/topics/habitat_destruction
(334 words)
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| | Fast Factsabout habitat destruction |
| | The number of Americans living on coastal areas will probably reach 127 million by 2010, a 60-percent increase over a half-century of migration. | | | Global wood consumption is projected to increase 50 percent by the year 2050 | | | Beach-front development is already fragmenting coastal habitats, and rising population, temperature, and sea levels could compound these losses. |
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http://www.uwsp.edu/cnr/wcee/biodiversity/sbiodiversity/Unit3/fast_factsabout_habitat_destruct.htm
(486 words)
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| | Habitat destruction and habitat fragmentation |
| | The remaining habitat is often broken into many small fragments, which are separated by large areas of land under cultivation or other human uses, effectively reducing a single "continent" into many "islands". | | | Most of the grasslands and forests of the Northern Hemisphere were destroyed by the end of the nineteenth century, the grasslands of the southern hemisphere are now vanishing, and tropical forests are disappearing at a rate of about 2% per year. | | | This type of destruction has become the norm for most biological communities, as the human population expands our economic needs require resources from more and more land. |
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http://www.uic.edu/classes/bios/bios101/Extinction/tsld005.htm
(100 words)
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| | Habitat Destruction |
| | As the overall population declines so does the number of breeding individuals and therefore the effective population size (Ne). | | | Greenhouse gasses are causing a change in the climactic structure of the world, thus altering the regions in which various species can survive (Primack, 1993). | | | Isolation is partly a factor of the hostility of the intervening habitat. |
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http://www.science.mcmaster.ca/biology/CBCN/genetics/fos_tig5.htm
(430 words)
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| | Habitat Destruction and Wetlands Protection Violations |
| | It is closely adjacent to unspecialized or specialized wetlands, and formerly served as habitat for beaver, moose, deer, great blue heron, ladies slippers, and numerous other species. | | | In the late winter and spring of 2003, Waterford began the second phase of its residential development project - the construction of single family homes at the periphery of the apartment complex. | | | Construction of the 8 building apartment complex has continued throughout the summer, fall and early winter of 2003, with the loss of habitat becoming increasingly obvious. |
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http://www.mv.com/ipusers/env/habitatdes.html
(568 words)
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| | Habitat Destruction |
| | A big part of habitat destruction is wetland drainage | | | Wetland loss is especially critical in western states where amphibian decline has been most |
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http://www.starkman.com/natan/webbed_feet/habitat.html
(50 words)
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| | Habitat destruction and the extinction debt |
| | Dominant species often are considered to be free of this threat because they are abundant in the undisturbed fragments that remain after destruction. | | | Further species are predicted to become extinct, in order from the best to the poorest competitors, as habitat destruction increases. | | | Department of Zoology, Oxford University, South Parks Road, Oxford 0X1 3PS, UK HABITAT destruction is the major cause of species extinctions |
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http://www.nature.com/doifinder/10.1038/371065a0
(368 words)
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| | Batty For Bats |
| | In the United States, nearly 40% of the native bat species are endangered because of a lack of food, due in part to practices such as habitat destruction and indiscriminate use of pesticides. | | | A number of bat species are threatened with extinction or endangered including the flying fox and several types of fruit bats, thanks to centuries of superstitions. | | | Content compiled primarily from the book New Standard Encyclopedia and also the above mentioned websites. |
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http://www.hallowfreaks.com/bats.html
(821 words)
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| | Ecology: Phelsuma antanosy in danger through habitat destruction |
| | Impediments to restoration of complex tropical ecosystems include: many intricate evolved mutualisms between all types of organisms, long intervals of time required for many tropical trees to recover, and invasive species commonly acquire a foothold in disturbed habitats. | | | The QIT-Fer mining project will be centred around the city of Fort Dauphin (or Tolagnaro) in the extreme south eastern coast of the Island (Fig 1). | | | During a 50 km drive along Route Nationale 12, one can see coastal marine areas, coastal littoral forest, montane rain forest, dry deciduous forest, and the unique spiny desert. |
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http://www.phelsumania.com/public/articles/ecology_antanosy_1.html
(1358 words)
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| | Forest Conservation Links: Land/Ecology/Habitat |
| | dedicated to the preservation of biological diversity through ecosystem protection worldwide, raising funds to purchase and protect critical habitat for endangered species of plants, animals and ecosystems | | | works to increase the amount of quality wildlife habitat on corporate, private and public lands; and to conserve and restore natural ecosystems by bringing together conservation and business | | | conserving wild birds and their habitats throughout the Americas |
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http://www.forests.org/links/Ecology/Habitat/index.php
(208 words)
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| | Habitat protection sought for bears - billingsgazette.com |
| | Last modified November 1, 2004 - 12:39 am | | | Habitat standards would not apply outside the designated area. | | | Of four alternatives, the agency's preferred one would include habitat standards and limited road-building inside a primary conservation area. |
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http://www.billingsgazette.com/index.php?id=1&display=rednews/2004/11/01/build/wyoming/68-bear-habitat-protection.inc
(280 words)
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| | Habitat Destruction From Shea Grading |
| | The above photograph shows that pickleweed (a wetlands indicator species) was buried by the fill dirt in the county parcel. | | | The portion of the city parcel immediately adjacent to the channel was also regraded (not shown on map, but see before/after photo below) and lowered about 18 inches from its previous level in order to facilitate water flow into the county parcel. | | | Shortly after this work was discovered by opponents, Ron Metzler of Shea Homes was quoted in the HB Independent newspaper as saying the grading was done simply to "restore" an old drainage channel and that no wetlands habitat was destroyed. |
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http://www.bixby.org/parkside/multimedia/grading
(1468 words)
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| | Why can we release butterflies without damage? |
| | Will laboratory or farm raised Monarchs be ‘mixed up’ and unable to find their way to over wintering sites? | | | In some countries people have begun to conserve desirable wildlife, but even here many important food plants are regarded as ‘weeds’ and removed—patches of rough, wild vegetation are anathema to town planners and highway authorities. | | | In order to ship butterflies across state lines for release, breeders must obtain a permit from the USDA-APHIS-PPQ-SS (United States Department of Agriculture, Animal and Plant Health Protection Service, Plant Protection and Quarantine, Scientific Services). |
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http://www.butterflynursery.com/wedding-butterflies/Why_It_Is_OK.htm
(1231 words)
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