Featured Research

from universities, journals, and other organizations

Commercial Hunting May Be Largest Threat To Tropical Forests

Date:
April 26, 2007
Source:
Blackwell Publishing
Summary:
Recent research considers the consequences of commercial hunting in the tropics, including its direct impacts on vertebrates and indirect impacts on plants. Using more than 100 forest sites scattered across the Amazon, the authors show that most large game birds and mammals have been severely reduced to a small fraction of their original population densities, often just 1--5 percent of the densities of the same species in similar protected forests.

Recent research published in the journal Biotropica addresses commercial hunting in the tropics, including its direct impacts on vertebrates and indirect impacts on plants.

Many of the birds and mammals found in tropical ecosystems are frugivores, animals that disperse seeds rather than eat and kill them. These same animals are hunted at unsustainable rates virtually throughout the tropics. Researchers Richard Corlett, and Carlos Peres and Erwin Palacios review the consequences this has on tropical Asia and the Amazon, respectively, and consider the pervasive consequences for plants.

In tropical Asia, commercial hunting for large-scale regional trade in wild animals has replaced traditional subsistence hunting. Most species are being hunted illegally at unsustainable levels and enforcement is weak in many areas. Reductions in the current rates of deforestation and logging will not be enough to save many of the region's animals from extinction. Ending the trade in wild animals and their parts should be the number one conservation priority in tropical Asia.

Using more than 100 forest sites scattered across the Amazon, the authors show that most large game birds and mammals have been severely reduced to a small fraction of their original population densities, often just 1–5 percent of the densities of the same species in similar protected forests.

Seed dispersal depends entirely on vertebrates for plant species with large seeds encased in fleshy fruits. Thus, hunting invariably alters relative seed dispersal distances among different plant species. Hunting is already changing plant species composition of tropical forests worldwide. As the composition of plant species changes, they may not provide the fruits and seeds necessary to sustain populations of frugivorous and granivorous vertebrates.


Story Source:

The above story is based on materials provided by Blackwell Publishing. Note: Materials may be edited for content and length.


Cite This Page:

Blackwell Publishing. "Commercial Hunting May Be Largest Threat To Tropical Forests." ScienceDaily. ScienceDaily, 26 April 2007. <www.sciencedaily.com/releases/2007/04/070425095736.htm>.
Blackwell Publishing. (2007, April 26). Commercial Hunting May Be Largest Threat To Tropical Forests. ScienceDaily. Retrieved July 30, 2014 from www.sciencedaily.com/releases/2007/04/070425095736.htm
Blackwell Publishing. "Commercial Hunting May Be Largest Threat To Tropical Forests." ScienceDaily. www.sciencedaily.com/releases/2007/04/070425095736.htm (accessed July 30, 2014).

Share This




More Plants & Animals News

Wednesday, July 30, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Raw: Thousands Flocking to German Crop Circle

Raw: Thousands Flocking to German Crop Circle

AP (July 30, 2014) Thousands of people are trekking to a Bavarian farmer's field to check out a mysterious set of crop circles. (July 30) Video provided by AP
Powered by NewsLook.com
Concern Grows Over Worsening Ebola Crisis

Concern Grows Over Worsening Ebola Crisis

AFP (July 30, 2014) Pan-African airline ASKY has suspended all flights to and from the capitals of Liberia and Sierra Leone amid the worsening Ebola health crisis, which has so far caused 672 deaths in Guinea, Liberia and Sierra Leone. Duration: 00:43 Video provided by AFP
Powered by NewsLook.com
At Least 20 Chikungunya Cases in New Jersey

At Least 20 Chikungunya Cases in New Jersey

AP (July 30, 2014) At least 20 New Jersey residents have tested positive for chikungunya, a mosquito-borne virus that has spread through the Caribbean. (July 30) Video provided by AP
Powered by NewsLook.com
Raw: Otters Enjoy Water Slides at Japan Zoo

Raw: Otters Enjoy Water Slides at Japan Zoo

AP (July 30, 2014) River otters were hitting the water slides to beat the summer heatwave on Wednesday at Ichikawa City's Zoological and Botanical Garden. (July 30) Video provided by AP
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins