The effects of deforestation on wildlife along the transamazon We analyze hunting practices, game yield, hunting efficiency and their relation to forest coverage rate. .. Sudden local extinctions of large mammals (tapir and. The combined impact of deforestation and wildlife exploitation on bird species becoming extinct, a joint study by the University of Sheffield. MODERN CAUSES OF SPECIES EXTINCTIONS: HABITAT DESTRUCTION the rate of forest loss (~% annually), and (c) the slope of the S-A relationship.
Uncertainty regarding rate, and what it will be in future. How many species will be lost?Vanishing Species (deforestation causes species extinction)
We know that small land areas support fewer species than large land areas. Habitat destruction is especially serious when it threatens hotspots areas of high species richness and regions with many endemics.
Similarities And Differences Why should we worry about deforestation in the tropics, since deforestation in North America caused few species to go extinct?
Caused changes in abundance more than outright extinction. Rain forest priorities, 2.
Estimates of deforestation rates, 3. From old-growth to young-growth, 4. Forest fragmentation in Wisconsin, 5.
Modern Causes of Species Extinctions: Habitat Destruction
Willamette River habitat loss, 6. Dams and river fragmentation, North America, 7. US forests - and8. Costa Rica deforestation, 9. In recent decades, there has been an extensive loss-of-tropical forests, driven primarily by the expansion of agricultural land 2 — 4.
This loss has serious consequences for tropical biodiversity, as the destruction of suitable habitat threatens the survival of forest specialist species. Anthropogenic disturbances within remaining forest, including logging, fires, hunting, trapping, and edge effects, are also serious drivers of biodiversity declines 5.
Illegal hunting of wildlife for internationally traded products, pets and as a food resource are directly responsible for the declines of emblematic species, such as elephant 8rhinoceros 9tiger 10and Bali starling At its most extreme, overhunting can result in the extinction of large-bodied animals in otherwise healthy intact habitat 12driving changes in forest composition 13 — The negative consequences of habitat change and wildlife exploitation are thus often cumulative.
Increasing deforestation and forest fragmentation and its associated infrastructure development makes remote areas of forest increasingly accessible 716exacerbating hunting and trapping pressure and other forms of anthropogenic disturbance 5.
While recent attempts to incorporate up-to-date spatial data globally 18 represent an advance in our understanding of species threat assessments, by looking at one type of threat in isolation, they likely underestimate the extinction threat posed by the combined impacts of wildlife trade and deforestation in commercially valuable species.
We focus on Sundaland, a major hotspot of biodiversity in Southeast Asia, where habitat loss, hunting and wildlife trade are particularly acute 9. These developments are compounded by an intensive wildlife trade for birds and other species that feeds rampant domestic and international markets, driving precipitous population declines and local extinctions in many species 1123 —